dr. M. Spirito

Associate Professor
Electronic Circuits and Architectures (ELCA), Department of Microelectronics

PhD thesis (Jun 2005): Enhanced Techniques for the Design and Characterization of RF Power Amplifiers
Promotor: J.N. Burghartz

Expertise: (Sub)mm-wave electronics, mm-wave characterization, calibration, (Sub)mm-wave sensing systems

Themes: XG - Next Generation Sensing and Communication

Biography

Marco Spirito (S’01-M’08) received the M.Sc. degree (cum laude) in electrical engineering from the University of Naples “Federico II,” Naples, Italy, in 2000, and the Ph.D. degree from the Delft University of Technology, Delft, The Netherlands, in 2006. From 2000 to 2001, he was a guest at Infineon Technologies, Munich, Germany. In 2006, he joined the department of Electronics and Telecommunications Engineering, University of Naples “Federico II.” In April 2008 he joined the Electronics Research Laboratory at the Delft University of Technology as an Assistant Professor, where he is an Associate Professor since April 2013. His research interests include the characterization of highly efficient and linear power amplifiers, the development of advanced characterization setups for millimeter and sub-millimeter waves, and the integration of mm-wave sensing systems. Dr. Spirito was the recipient of the Best Student Paper Award for his contribution to the 2002 IEEE Bipolar/BiCMOS Circuits and Technology Meeting (BCTM) he received the IEEE MTT Society Microwave Prize in 2008, was a co-recipient of the best student paper award at IEEE RFIC 2011, and the GAAS Association Student Fellowship in 2012.

Currently, my research focuses on the development of measurement techniques and test-benches, on the definition and implementation of novel system concepts and the improved calibration methods to reach the required performance in (sub)mm-wave frequency range. The investigation on measurement techniques starts with the implementation of novel high performance test-benches and develops into the realization of accurate measurements allowing to extract the key parameters of innovative device or sub-systems under test. The realization of unique tools (software and hardware) provides strategic know-how and infrastructures which enable the evaluation and further improvement of the system/device under test. Calibration techniques are the needed “recipes” to improve the characterization accuracy and/or provide new insight in the object under test.

Working on system level definition, calibration algorithms, and component level design allows me to effectively interact with complementary fields and colleagues, i.e., antenna and EM experts, device modelling specialists and circuit designers. Through an active co-operation, leveraging their skills, I am involved in the design, implementation and characterization of higher complexity systems operating at the frontier of high-frequency technologies.

EE1L21 EPO-2: Smart Robot Challenge

Build, program and operate a functional autonomous mobile robot

EE4605 Integrated Circuits and Systems for Wireless Applications

Design and analysis of typical RF IC building blocks in a wireless transceiver

EE4C05 Electromagnetics

Basic introduction to the fundamental concepts of the Electromagnetics (EM)

WAtt LEvel transmitters at mm-waves

The WhALE project targets, employing complementary expertise in the field of electromagnetics, system integration and integrated circuit design, to develop the next generation of mmwave transmitters.

Microwave measurements for planar circuits and components

PlanarCal aims to aim of the project is to enable traceable measurement of integrated planar circuits and components from radio-frequency (RF) to sub-mm frequencies.

Integrated Near Field sensOrs for high Resolution MicrowavE spectRoscopy

The goal of this project is the creation of a new class of sensors, enabling fast and accurate dielectric characterization of biological samples, with high-sensitivity and high-spatial resolution.

Non-Galvanic Contactless Connectors for Power and Data Transfer

The WiCon project will provide low-cost, highly-integrated system solutions for galvanic connectors replacement in the consumer and industrial market segments.

THz silicon-integrated camera for low-cost imaging applications

Develop a real-time multi pixel passive radiometer, operating between 0.1 THz and 1THz, integrated in a silicon based technology, with temperature resolution better than 1K

Projects history

STW Take-off phase1: High gamma vector network analysis

HΓ-VNA targets the implementation of a new measurement technique, enabling accurate characterization of electronic devices as well as biological and organic materials, which share the common characteristic of presenting extreme loading condition in the RF/Microwave frequency range.

Metrology for optical and RF communication systems

To develop traceable methods for RF power and MIMO antenna measurements and cost-effective metrological solutions for smart, adaptive, reconfigurable and wearable antennas.

Dotseven

DOTSEVEN is a very ambitious 3.5 year R&D project targeting the development of silicon germanium (SiGe) heterojunction bipolar transistor (HBT) technologies with cut-off frequencies (fmax) up to 700 GHz.

From RF to MMW and THz silicon SoC technologies

Silicon technology platforms for emerging RF, millimetre-wave and THz consumer applications.

  1. Wideband Double Leaky Slot Lens Antennas in CMOS Technology at Sub-millimeter Wavelengths
    Sven Van Berkel; Satoshi Malotaux; Carmine De Martino; Marco Spirito; Danielle Cavallo; Andrea Neto; Nuria Llombart;
    IEEE Transactions on Terahertz Science and Technology,
    Volume Early Access, 2020. DOI: 10.1109/TTHZ.2020.3006750
    document

  2. Efficient waveguide power combiners at mm-wave frequencies
    R. van Schelven; M. Spirito; D. Cavallo;
    In 14th European Conference on Antennas and Propagation,
    Copenhagen, Denmark, Mar. 15-20 2020. (Convened paper).

  3. Experimental validation of system NEP of a single-pixel THz imaging camera in CMOS
    S.L. van Berkel; E.S. Malotaux; C. de Martino; M. Spirito; D. Cavallo; A. Neto; N. Llombart;
    In 14th European Conference on Antennas and Propagation,
    Copenhagen, Denmark, Mar. 15-20 2020.

  4. Waveguide Doherty Combiner for mm-Waves
    R. van Schelven; M. Spirito; D. Cavallo;
    In IEEE Antennas and Propagation Society International Symposium,
    Montréal, Canada, Jul. 5-10 2020.

  5. Experimental Modeling and High-Frequency Characterization of NEP for a CMOS THz Imager
    S.L. van Berkel; E.S. Malotaux; C. de Martino; M. Spirito; D. Cavallo; A. Neto; N. Llombart;
    In IEEE Antennas and Propagation Society International Symposium,
    Montréal, Canada, Jul. 5-10 2020.

  6. Miniaturized Broadband Microwave Permittivity Sensing for Biomedical Applications
    G. Vlachogiannakis; Z. Hu; H. T. Shivamurthy; A. Neto; M. A. P. Pertijs; M. Spirito; L. C. N. de Vreede;
    IEEE Journal of Electromagnetics, RF and Microwaves in Medicine and Biology,
    Volume 3, Issue 1, pp. 48--55, March 2019. DOI: 10.1109/JERM.2018.2882564
    Abstract: ... A compact sensing pixel for the determination of the localized complex permittivity at microwave frequencies is proposed. Implemented in the 40-nm CMOS, the architecture comprises a square patch, interfaced to the material-under-test sample, that provides permittivity-dependent admittance. The patch admittance is read out by embedding the patch in a double-balanced, RF-driven Wheatstone bridge. The bridge is cascaded by a linear, low-intermediate frequency switching downconversion mixer, and is driven by a square wave that allows simultaneous characterization of multiple harmonics, thus increasing measurement speed and extending the frequency range of operation. In order to allow complex permittivity measurement, a calibration procedure has been developed for the sensor. Measurement results of liquids show good agreement with theoretical values, and the measured relative permittivity resolution is better than 0.3 over a 0.1-10-GHz range. The proposed implementation features a measurement speed of 1 ms and occupies an active area of 0.15x0.3 mm², allowing for future compact arrays of multiple sensors that facilitate 2-D dielectric imaging based on permittivity contrast.

  7. Noise Behavior and Implementation of Interferometer-Based Broadband VNA
    F. A. Mubarak; R. Romano; L. Galatro; V. Mascolo; G. Rietveld; M. Spirito;
    IEEE Transactions on Microwave Theory and Techniques,
    Volume 67, Issue 1, pp. 249-260, Jan 2019. DOI: 10.1109/TMTT.2018.2874667
    Keywords: ... coplanar waveguides;network analysers;radiowave interferometers;complex noise behavior;vector network analyzers;VNA measurement noise performance;broadband measurement;coplanar waveguide;active RF interferometer module approach;interferometer-based broadband VNA noise model;scanning microwave microscope;renormalized impedance level;phase stability;frequency 1.0 GHz to 18.0 GHz;resistance 0.5 ohm;resistance 5 kohm;Noise measurement;Impedance measurement;Frequency measurement;Impedance;Broadband communication;Radio frequency;Sensitivity;Extreme impedance measurement;impedance mismatch;microwave interferometry;nanoelectronics;nanostructures;noise;vector network analyzer (VNA).

  8. Miniaturized Broadband Microwave Permittivity Sensing for Biomedical Applications
    G. Vlachogiannakis; Z. Hu; H. T. Shivamurthy; A. Neto; M. A. P. Pertijs; L. C. N. de Vreede; M. Spirito;
    IEEE Journal of Electromagnetics, RF and Microwaves in Medicine and Biology,
    Volume 3, Issue 1, pp. 48-55, March 2019. DOI: 10.1109/JERM.2018.2882564
    Keywords: ... biomedical electronics;biomedical imaging;biomedical transducers;CMOS integrated circuits;microwave detectors;microwave imaging;microwave integrated circuits;microwave measurement;parameter estimation;permittivity measurement;readout electronics;biomedical applications;permittivity imaging;measurement noise reduction;bridge balancing;Debye model parameter estimation;material permittivity differences;patch sensor;programmable balanced readout bridge;fifth harmonic downconversion;fast multifrequency readout;complementary metal-oxide semiconductor technology;miniaturized broadband complex microwave permittivity sensing;CMOS technology;third harmonic downconversion;image construction;efficiency 5.3 percent;Sensors;Permittivity;Bridge circuits;Radio frequency;Permittivity measurement;Metals;Microwave circuits;Bridge circuits;biomedical sensors;complementary metal-oxide semiconductor (CMOS) sensors;complex permittivity measurement;microwave sensors.

  9. CMOS connected array with polarization reusage for passive THz imaging applications
    S. L. van Berkel; E. S. Malotaux; D. Cavallo; M. Spirito; A. Neto; N. Llombart;
    In Proc. of 13th European Conference on Antennas and Propagation,
    Krakow, Poland, Mar. 31 - Apr. 5 2019.

  10. Dual Polarized THz Imaging FPA in 22nm CMOS
    S. L. van Berkel; S. Malotaux; B. van den Bogert; M. Spirito; D. Cavallo; A. Neto; N. Llombart;
    In IEEE Antennas and Propagation Society International Symposium,
    Atlanta, Georgia, USA, Jul. 7-12 2019.

  11. High resolution passive THz imaging array with polarization reusage in 22nm CMOS
    S.L. van Berkel; S. Malotaux; B. van den Bogert; M. Spirito; D. Cavallo; A. Neto; N. Llombart;
    In 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz),
    Paris, France, Sep. 1-6 2019.

  12. High Resolution Passive THz Imaging Array With Polarization Reusage in 22nm CMOS
    S. L. van Berkel; E. S. Malotaux; B. van den Bogert; M. Spirito; D. Cavallo; A. Neto; N. Llombart;
    In 2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz),
    pp. 1-2, Sep. 2019. DOI: 10.1109/IRMMW-THz.2019.8874183
    Keywords: ... blackbody radiation;CMOS image sensors;field effect MIMIC;focal planes;image resolution;millimetre wave antennas;millimetre wave detectors;millimetre wave diodes;Schottky barriers;Schottky diodes;sensor arrays;submillimetre wave antennas;submillimetre wave detectors;submillimetre wave diodes;submillimetre wave imaging;submillimetre wave integrated circuits;terahertz wave imaging;Schottky Barrier Diodes;average noise equivalent power;orthogonal polarizations;passive imaging;high optical efficiency;high resolution passive THz imaging Array;polarization reusage;THz focal plane array;Global Foundries CMOS technology;blackbody radiation;antenna-detector co-design;differential topology;extremely small array periodicity;near-diffraction limited resolution;size 22.0 nm;frequency 200.0 GHz to 600.0 GHz;picture size 12 pixel;efficiency 42 percent;Imaging;Radiometry;Detectors;Antenna arrays;Image resolution;Broadband antennas.

  13. A TRL Error-box Split Procedure to Compensate for the Bias Dependency Effects in Device Test-Fixtures
    C. De Martino; E. S. Malotaux; M. Spirito;
    In 2019 93rd ARFTG Microwave Measurement Conference (ARFTG),
    pp. 1-6, June 2019. DOI: 10.1109/ARFTG.2019.8739197
    Keywords: ... calibration;CMOS integrated circuits;compensation;electrostatic discharge;field effect MIMIC;mathematical analysis;measurement errors;millimetre wave antennas;millimetre wave diodes;millimetre wave measurement;S-parameters;circuit level simulator;nonsplit approach;TRL error-box split procedure;bias dependency effects;device test-fixtures;electrostatic discharge;antenna-effect protection diodes;reciprocal network;circuit level simulation;mathematical error analysis;S-parameter;direct metal-one TRL calibration;3D EM simulations;CMOS technology;size 28.0 nm;frequency 140.0 GHz to 200.0 GHz;Calibration;Electrostatic discharges;Perturbation methods;Fixtures;Capacitance;Mathematical model;Scattering parameters;mm-wave;ESD;on-wafer;Antenna effect;S-parameters;TRL calibration.

  14. The HΓ-VNA, an Interferometric Approach for the Accurate Measurement of Extreme Impedances
    R. Romano; F. Mubarak; M. Spirito; L. Galatro;
    In 2019 93rd ARFTG Microwave Measurement Conference (ARFTG),
    pp. 1-6, June 2019. DOI: 10.1109/ARFTG.2019.8739232
    Keywords: ... calibration;electric impedance measurement;electric resistance measurement;mixers (circuits);network analysers;radiowave interferometers;radiowave interferometry;resistors;HΓ-VNA;interferometric approach;IQ mixer-based RF-interferometer module;custom on-wafer calibration kit;fused silica substrate;short-open-load calibration technique;DUT;impedance resistor measurement;resistance 50 ohm;resistance 3.5 kohm to 7 kohm;SiO2;Calibration;Impedance;Impedance measurement;Sensitivity;Reflection coefficient;Standards;Mixers;vector network analyzer;extreme impedance;interferometer;IQ mixer;high gamma.

  15. A 3D Printed TE10 Rectangular to TE01 Circular Waveguide Transition for Polymer Waveguide Characterization
    M. Del Mastro; M. A. Del Pino; M. Spirito;
    In 2019 92nd ARFTG Microwave Measurement Conference (ARFTG),
    pp. 1-3, Jan 2019. DOI: 10.1109/ARFTG.2019.8637235
    Keywords: ... calibration;circular waveguides;copper;polymers;rectangular waveguides;three-dimensional printing;waveguide transitions;polymer waveguide characterization;printing polymers;waveguide flanges;circular port;circular polymer waveguides;3D printed TE10 rectangular-TE01 circular waveguide transition;copper plated 3D printed implementation;Marié rectangular-circular waveguide transition;copper plated 3D printed structure;machining limitation;curved surfaces;signal propagation;full TRL calibration;VNA environment;step diameter taper;frequency 65.0 GHz to 90.0 GHz;Plastics;Waveguide transitions;Three-dimensional displays;Rectangular waveguides;Calibration;Optical waveguides;Copper;rectangular to circular transition;mode transducer;polymer waveguide;mm-wave.

  16. A 3D Printed TE10 Rectangular to TE01 Circular Waveguide Transition for Polymer Waveguide Characterization
    M. Del Mastro; M. Alonso-delPino; M. Spirito;
    In 92nd ARFTG Microwave Measurement Conference (ARFTG),
    Orlando, Florida, USA, 2019.

  17. A 40-nm CMOS Complex Permittivity Sensing Pixel for Material Characterization at Microwave Frequencies
    G. Vlachogiannakis; M. A. P. Pertijs; M. Spirito; L. C. N. de Vreede;
    IEEE Transactions on Microwave Theory and Techniques,
    Volume 66, Issue 3, pp. 1619-1634, March 2018. DOI: 10.1109/tmtt.2017.2753228
    Abstract: ... A compact sensing pixel for the determination of the localized complex permittivity at microwave frequencies is proposed. Implemented in the 40-nm CMOS, the architecture comprises a square patch, interfaced to the material-under-test sample, that provides permittivity-dependent admittance. The patch admittance is read out by embedding the patch in a double-balanced, RF-driven Wheatstone bridge. The bridge is cascaded by a linear, low-intermediate frequency switching downconversion mixer, and is driven by a square wave that allows simultaneous characterization of multiple harmonics, thus increasing measurement speed and extending the frequency range of operation. In order to allow complex permittivity measurement, a calibration procedure has been developed for the sensor. Measurement results of liquids show good agreement with theoretical values, and the measured relative permittivity resolution is better than 0.3 over a 0.1-10-GHz range. The proposed implementation features a measurement speed of 1 ms and occupies an active area of 0.15x0.3 mm², allowing for future compact arrays of multiple sensors that facilitate 2-D dielectric imaging based on permittivity contrast.

  18. Wideband single pixel radiometer in 28 nm CMOS technology for low-cost imaging applications
    S. L. van Berkel; E. S. Malotaux; D. Cavallo; M. Spirito; A. Neto; N. Llombart;
    In 12th European Conference on Antennas and Propagation,
    London, U.K., Apr. 9-13 2018.

  19. Optical performance of a wideband 28nm CMOS double bow-tie slot antenna for imaging applications
    van Berkel, S. L.; Malotaux, E. S.; Cavallo, D.; Spirito, M.; Neto, A.; Llombart, N.;
    In 43rd International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW THz-2018),
    Nagoya, Japan, Sep. 9-14 2018.

  20. A 5x5 Microwave Permittivity Sensor Matrix in 0.14-μm CMOS
    Z. Hu; G. Vlachogiannakis; M. A. P. Pertijs; L. C. N. de Vreede; M. Spirito;
    In Proc. IEEE MTT-S International Microwave Symposium (IMS),
    6 2018. DOI: 10.1109/MWSYM.2018.8439438

  21. A Compact Energy Efficient CMOS Permittivity Sensor Based on Multi-Harmonic Downconversion and Tunable Impedance Bridge
    G. Vlachogiannakis; Z. Hu; H. T. Shivamurthy; A. Neto; M. A. P. Pertijs; L. C. N. de Vreede; M. Spirito;
    In Int. Microwave Biomedical Conference (IMBioC),
    pp. 1--3, June 2018. DOI: 10.1109/IMBIOC.2018.8428950
    Abstract: ... This paper presents a 0.15×0.3 mm2 complex permittivity sensor integrated in a 40-nm CMOS node. A single-ended patch, employed as a near-field sensing element, is integrated with a double-balanced, fully-differential tunable impedance bridge that is driven by a square RF pulse. The multi-harmonic, intermediate-frequency down-conversion architecture achieves a compact form factor and fast multi-frequency readout. Measurement results show good agreement with theoretical values and the measured relative permittivity variation remains below 0.3 over a 0.1-10 GHz range at a 1-ms measurement time. The energy efficiency resulting from the fast measurement time and the record-small active area allows integration in battery-operated wearables.

  22. A Planar Near-Field Setup for Millimeter-Wave System-Embedded Antenna Testing
    M. Alonso-delPino; M. d. Rosa; M. Simeoni; M. Spella; C. De Martino; M. Spirito;
    IEEE Antennas and Wireless Propagation Letters,
    Volume 16, pp. 83-86, 2017.

  23. Millimeter-Wave On-Wafer TRL Calibration Employing 3-D EM Simulation-Based Characteristic Impedance Extraction
    L. Galatro; M. Spirito;
    IEEE Transactions on Microwave Theory and Techniques,
    Volume PP, Issue 99, pp. 1-9, 2017.

  24. Performance of THz Components Based on Microstrip PECVD SiNx Technology
    M. Finkel; H. Thierschmann; L. Galatro; A. J. Katan; D. J. Thoen; P. J. de Visser; M. Spirito; T. M. Klapwijk;
    IEEE Transactions on Terahertz Science and Technology,
    Volume 7, Issue 6, pp. 765-771, Nov 2017. DOI: 10.1109/TTHZ.2017.2759507
    Keywords: ... Coplanar waveguides;Couplers;Dielectrics;Power transmission lines;Probes;Standards;Transmission line measurements;Coupling circuits;micromechanical devices;submillimeter wave circuits;thin film circuits.

  25. A 40-nm CMOS Complex Permittivity Sensing Pixel for Material Characterization at Microwave Frequencies
    G. Vlachogiannakis; M. A. P. Pertijs; M. Spirito; L. C. N. de Vreede;
    IEEE Transactions on Microwave Theory and Techniques,
    Volume PP, Issue 99, pp. 1-16, 2017. DOI: 10.1109/TMTT.2017.2753228
    Keywords: ... Biomedical measurement;Microwave measurement;Microwave theory and techniques;Permittivity;Permittivity measurement;Sensor phenomena and characterization;Biomedical sensors;bridge circuits;complex permittivity measurement;integrated microwave circuits;micro-wave sensors..

  26. A Total-Power Radiometer Front End in a 0.25- $mu textm$ BiCMOS Technology With Low $1/f$ -Corner
    S. Malotaux; M. Babaie; M. Spirito;
    IEEE Journal of Solid-State Circuits,
    Volume 52, Issue 9, pp. 2256-2266, Sept 2017. DOI: 10.1109/JSSC.2017.2705659
    Keywords: ... 1/f noise;BiCMOS integrated circuits;Ge-Si alloys;carbon;low noise amplifiers;millimetre wave amplifiers;millimetre wave detectors;radiometers;semiconductor materials;white noise;1/f -noise corner;BiCMOS technology;LNA;NEP;SiGe:C;bandwidth 6 GHz;frequency 56 GHz;heterojunction bipolar transistor;high-sensitivity millimeter-wave total-power radiometer front-end;large area high resistive value load resistor;low noise-equivalent power;low transformation ratio;optimum bias;size 0.25 nm;two cascode stage low-noise amplifier;voltage-driven common-emitter square-law detector;white noise;wideband signal transfer;Antennas;Bandwidth;BiCMOS integrated circuits;Detectors;Radio frequency;Radiometry;Signal to noise ratio;Direct detection;flicker noise;low-noise amplifier (LNA);millimeter-wave (mm-wave);radiometer;square-law detector.

  27. Capacitively Loaded Inverted CPWs for Distributed TRL-Based De-Embedding at (Sub) mm-Waves
    L. Galatro; A. Pawlak; M. Schroter; M. Spirito;
    IEEE Transactions on Microwave Theory and Techniques,
    Volume PP, Issue 99, pp. 1-11, 2017. DOI: 10.1109/TMTT.2017.2727498
    Keywords: ... Calibration;Coplanar waveguides;Dielectrics;Impedance;Power transmission lines;Substrates;Transmission line measurements;CPW;VNA.;distributed de-embedding;millimeter waves;silicon;slow wave;thru-reflect line (TRL).

  28. Performance of THz Components Based on Microstrip PECVD SiN x Technology
    Finkel, Matvey; Thierschmann, Holger; Galatro, Luca; Katan, Allard J; Thoen, David J; de Visser, Pieter J; Spirito, Marco; Klapwijk, Teun M;
    IEEE Transactions on Terahertz Science and Technology,
    Volume 7, Issue 6, pp. 765-771, 2017.
    document

  29. A Planar Near-Field Setup for Millimeter-Wave System-Embedded Antenna Testing
    M. Alonso-delPino; M. d. Rosa; M. Simeoni; M. Spella; C. De Martino; M. Spirito;
    IEEE Antennas and Wireless Propagation Letters,
    Volume 16, pp. 83-86, 2017.
    document

  30. Wideband single pixel radiometer in CMOS
    S. L. van Berkel; E. S. Malotaux; D. Cavallo; M. Spirito; A. Neto; N. Llombart;
    In 2017 42nd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz),
    pp. 1-2, Aug 2017. DOI: 10.1109/IRMMW-THz.2017.8067166
    Keywords: ... CMOS integrated circuits;broadband antennas;millimetre wave antennas;p-n junctions;radiometers;semiconductor diodes;submillimetre wave antennas;submillimetre wave detectors;CMOS technology;antenna-detector impedance mismatch;frequency 10.0 Hz;frequency 200.0 GHz to 600.0 GHz;passive uncooled radiometer pixel;pn-junction diode;size 28.0 nm;temperature 2.6 K;uncooled imaging capabilities;wideband antenna;wideband single pixel radiometer;Antennas;Detectors;Imaging;Lenses;Radiometry;Schottky diodes;Silicon.

  31. Integrated waveguide power combiners with artificial dielectrics for mm-wave systems
    Z. Hu; M. Alonso-delPino; D. Cavallo; H. T. Shivamurthy; M. Spirito;
    In 2017 IEEE MTT-S International Microwave Symposium (IMS),
    pp. 646-649, June 2017. DOI: 10.1109/MWSYM.2017.8058652
    Keywords: ... dielectric materials;elemental semiconductors;power combiners;silicon;waveguides;BiCMOS technology implementation;E field probes;N:1 power combiner;Si;artificial dielectrics;back-end-of-line;back-to-back-combiner operation;capacitive resonance;frequency 240.0 GHz to 310.0 GHz;full wave EM simulations;full-wave electromagnetic simulations;input feeding;insertion losses;integrated waveguide power combiners;mm-wave systems;power combiner operation;signal summation;silicon technologies;single transverse plane;synthetic waveguides;BiCMOS integrated circuits;Impedance;Pins;Power combiners;Probes;Prototypes;(sub)millimeter-wave;BiCMOS;Integrated circuit;artificial dielectric;power combiner;waveguide.

  32. A near-field setup with independent amplitude and phase control of the stimuli for phased antenna testing
    C. De Martino; M. Spirito; I. E. Lager; M. Simeoni;
    In 2017 11th European Conference on Antennas and Propagation (EUCAP),
    pp. 2851-2855, March 2017. DOI: 10.23919/EuCAP.2017.7928515
    Keywords: ... antenna phased arrays;antenna testing;digital-analogue conversion;mixers (circuits);phase control;Cartesian modulation;broadband passive IQ-mixers;complex antenna array;delay mismatch compensation;far-field radiation pattern;high-resolution DAC;high-resolution digital-to-analogue converters;independent amplitude control;loss compensation;near-field antenna setup;phase coherent signals;phase control;phased antenna array testing;quadrature signal;Antenna arrays;Antenna measurements;Antenna radiation patterns;Calibration;Europe;Testing.

  33. Wideband single pixel radiometer in CMOS
    S.L. van Berkel; E.S. Malotaux; D. Cavallo; M. Spirito; A. Neto; N. Llombart;
    In 42nd International Conference on Infrared, Millimeter and Terahertz Waves,
    Cancun, Mexico, Aug. 27 - Sep. 1 2017. DOI: 10.1109/IRMMW-THz.2017.8067166
    document

  34. A near-field setup with independent amplitude and phase control of the stimuli for phased antenna testing
    C. De Martino; M. Spirito; I. E. Lager; M. Simeoni;
    In 12th European Conference on Antennas and Propagation,
    Paris, France, pp. 2862-2866, Mar. 19–24 2017.

  35. Integrated waveguide power combiners with artificial dielectrics for mm-wave systems
    Hu, Z.; Alonso-delPino, M.; Cavallo, D.; Thippur Shivamurthy, H.; Spirito, M.;
    In IEEE MTT International Microwave Symposium,
    Honolulu, Hawaii, Jun. 4-9 2017.
    document

  36. Contactless Measurement of Absolute Voltage Waveforms by a Passive Electric-Field Probe
    R. Hou; M. Spirito; F. Van Rijs; L. C. N. de Vreede;
    IEEE Microwave and Wireless Components Letters,
    Volume 26, Issue 12, pp. 1008-1010, Dec 2016.

  37. Nonintrusive Near-Field Characterization of Spatially Distributed Effects in Large-Periphery High-Power GaN HEMTs
    R. Hou; M. Lorenzini; M. Spirito; T. Roedle; F. van Rijs; L. C. N. de Vreede;
    IEEE Transactions on Microwave Theory and Techniques,
    Volume 64, Issue 11, pp. 4048-4062, Nov 2016.

  38. Near- and Far-Field Characterization of Planar mm-Wave Antenna Arrays with Waveguide-to-Microstrip Transition
    Salhi, Mohammed Adnan; Kazemipour, Alireza; Gentille, Gennaro; Spirito, Marco; Kleine-Ostmann, Thomas; Schrader, Thorsten;
    Journal of Infrared, Millimeter, and Terahertz Waves,
    Volume 37, Issue 9, pp. 857--873, 2016.
    document

  39. Branchline and directional THz coupler based on PECVD SiNx-technology
    M. Finkel; H. R. Thierschmann; L. Galatro; A. J. Katan; D. J. Thoen; P. J. de Visser; M. Spirito; T. M. Klapwijk;
    In 2016 41st International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz),
    pp. 1-2, Sept 2016.

  40. Characterization of broadband low-NEP SiGe square-law detectors for mm-wave passive imaging
    E. S. Malotaux; M. Spirito;
    In 2016 IEEE MTT-S International Microwave Symposium (IMS),
    pp. 1-4, May 2016.

  41. On the definition of reference planes in probe-level calibrations
    L. Galatro; F. Mubarak; M. Spirito;
    In 2016 87th ARFTG Microwave Measurement Conference (ARFTG),
    pp. 1-4, May 2016.

  42. BiCMOS integrated waveguide with artificial dielectric at submillimeter wave frequencies
    Alonso-delPino, M.; Thippur Shivamurthy, H.; Cavallo, D.; Galatro, L.; Spirito, M.;
    In IEEE MTT International Microwave Symposium,
    San Francisco, CA, USA, May 22-27 2016.
    document

  43. BiCMOS integrated waveguide with artificial dielectric at submillimeter wave frequencies
    M. A. d. Pino; H. T. Shivamurthy; D. Cavallo; L. Galatro; M. Spirito;
    In 2016 IEEE MTT-S International Microwave Symposium (IMS),
    pp. 1-4, May 2016.

  44. A passive total power radiometer in 0.25 #x00B5;m SiGe BiCMOS for millimeter-wave imaging
    E. S. Malotaux; M. Spirito;
    In 2016 IEEE Bipolar/BiCMOS Circuits and Technology Meeting (BCTM),
    pp. 118-121, Sept 2016.

  45. A 40-nm CMOS permittivity sensor for chemical/biological material characterization at RF/microwave frequencies
    G. Vlachogiannakis; M. Spirito; M. A. P. Pertijs; L. C. N. de Vreede;
    In 2016 IEEE MTT-S International Microwave Symposium (IMS),
    pp. 1-4, May 2016.

  46. Power level control of mm-wave test benches for accurate small and large-signal DUT measurements
    C. D. Martino; Z. Hu; L. Galatro; G. Sarris; M. Spirito;
    In 2016 88th ARFTG Microwave Measurement Conference (ARFTG),
    pp. 1-4, Dec 2016.

  47. A 40-nm CMOS permittivity sensor for chemical/biological material characterization at RF/microwave frequencies
    G. Vlachogiannakis; M. Spirito; M. A. P. Pertijs; L. C. N. de Vreede;
    In Proc. IEEE MTT-S International Microwave Symposium (IMS),
    IEEE, pp. 1‒4, May 2016. DOI: 10.1109/mwsym.2016.7540260

  48. Design, fabrication and measurement of 0.3 THz on-chip double-slot antenna enhanced by artificial dielectrics.
    W. H. Syed; G. Fiorentino; D. Cavallo; M. Spirito; M.P. Sarro; A. Neto;
    IEEE Transactions on Terahertz Science and Technology,
    Volume 5, Issue 2, pp. 288-298, March 2015.
    document

  49. Design, Fabrication, and Measurements of a 0.3 THz On-Chip Double Slot Antenna Enhanced by Artificial Dielectrics
    W. H. Syed; G. Fiorentino; D. Cavallo; M. Spirito; P. M. Sarro; A. Neto;
    IEEE Transactions on Terahertz Science and Technology,
    Volume 5, Issue 2, pp. 288-298, March 2015.

  50. Silicon-Based Technology for Integrated Waveguides and mm-Wave Systems
    V. Jovanovic; G. Gentile; R. Dekker; P. de Graaf; L. C. N. de Vreede; L. K. Nanver; M. Spirito;
    IEEE Transactions on Electron Devices,
    Volume 62, Issue 10, pp. 3153-3159, Oct 2015.

  51. Antenna design for a 1 THz source in SiGe-BiCMOS technology
    D. Cavallo; A. Visweswaran; M. Spirito; J. R. Long; N. Llombart; A. Neto;
    In IEEE Antennas and Propagation Society International Symposium,
    Vancouver, Canada, Jul. 19-25 2015.

  52. BiCMOS integrated waveguide power combiner at submillimeter-wave frequencies
    Alonso-delPino, M.; Cavallo, D.; Thippur Shivamurthy, H.; Gao, H.; Spirito, M.;
    In 40th International Conference on Infrared, Millimeter, and Terahertz Waves,
    Honk Kong, Aug. 23-28 2015.
    document

  53. High-efficiency on-chip antenna array for terahertz power source
    D. Cavallo; A. Visweswaran; N. Llombart; M. Spirito; A. Neto; and J. Long;
    In European conference on Antennas and Propagation (EuCAP),
    Lisbon, Portugal, April 12-17 2015.

  54. Medium-range propagation flexible waveguides at millimeter-wave and submillimeter-wave frequencies
    Alonso-delPino, M.; Llombart, N.; Spirito, M.;
    In International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz),
    Hong Kong, China, pp. 1-2, August 2015.
    document

  55. A wideband 60 GHz class-E/F2 power amplifier in 40nm CMOS
    M. Babaie; R. B. Staszewski; L. Galatro; M. Spirito;
    In 2015 IEEE Radio Frequency Integrated Circuits Symposium (RFIC),
    pp. 215-218, May 2015.

  56. Improved RSOL planar calibration via EM modelling and reduced spread resistive layers
    M. Spirito; L. Galatro; G. Lorito; T. Zoumpoulidis; F. Mubarak;
    In 2015 86th ARFTG Microwave Measurement Conference,
    pp. 1-5, Dec 2015.

  57. An IQ-steering technique for amplitude and phase control of mm-wave signals
    A. Visweswaran; C. de Martino; E. Sirignano; M. Spirito;
    In 2015 86th ARFTG Microwave Measurement Conference,
    pp. 1-4, Dec 2015.

  58. A simplified calibration procedure for on-wafer power levelled S-parameter measurements at mm-wave
    S. Galbano; L. Galatro; M. Spirito;
    In 2015 85th Microwave Measurement Conference (ARFTG),
    pp. 1-3, May 2015.

  59. Evaluation and modeling of measurement resolution of a vector network analyzer for extreme impedance measurements
    F. Mubarak; R. Romano; M. Spirito;
    In 2015 86th ARFTG Microwave Measurement Conference,
    pp. 1-3, Dec 2015.

  60. Non-intrusive near-field characterization of distributed effects in large-periphery LDMOS RF power transistors
    R. Hou; M. Spirito; R. Heeres; F. van Rijs; L. C. N. de Vreede;
    In 2015 IEEE MTT-S International Microwave Symposium,
    pp. 1-3, May 2015.

  61. BiCMOS integrated waveguide power combiner at submillimeter-wave frequencies
    M. Alonso-delPino; D. Cavallo; H. Thippur-Shivamurthy; H. Gao; M. Spirito;
    In 2015 40th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz),
    pp. 1-2, Aug 2015.

  62. Calibration and characterization techniques for on-wafer device characterization
    L. Galatro; M. Spirito;
    In 2015 IEEE 13th International New Circuits and Systems Conference (NEWCAS),
    pp. 1-4, June 2015.

  63. Medium-range propagation flexible waveguides at millimeter-wave and submillimeter-wave frequencies
    M. Alonso-delPino; N. Llombart; M. Spirito;
    In 2015 40th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz),
    pp. 1-2, Aug 2015.

  64. Power control for S-parameters and large signal characterization at (sub)-mmWave frequencies
    L. Galatro; S. Galbano; A. Santaniello; M. Spirito;
    In 2015 85th Microwave Measurement Conference (ARFTG),
    pp. 1-4, May 2015.

  65. An I/Q-mixer-steering interferometric technique for high-sensitivity measurement of extreme impedances
    G. Vlachogiannakis; H. T. Shivamurthy; M. A. D. Pino; M. Spirito;
    In 2015 IEEE MTT-S International Microwave Symposium,
    pp. 1-4, May 2015.

  66. Analysis of residual errors due to calibration transfer in on-wafer measurements at mm-wave frequencies
    L. Galatro; M. Spirito;
    In 2015 IEEE Bipolar/BiCMOS Circuits and Technology Meeting - BCTM,
    pp. 141-144, Oct 2015.

  67. Enhancement of front to back ratio of on chip antenna by artificial dielectrics at 300 GHz
    W. H. Syed; G. Fiorentino; D. Cavallo; M. Spirito; A. Neto; and P. M. Sarro;
    In 39th International Conference on Infrared, Millimeter, and Terahertz Waves,
    Tucson, AZ, USA, September 2014.
    document

  68. Front-to-back ratio enhancement of on-chip antenna using artificial dielectrics at 300 GHz
    W. H. Syed; G. Fiorentino; D. Cavallo; M. Spirito; A. Neto; and P. M. Sarro;
    In IEEE Antennas and Propagation Society International Symposium,
    Memphis, TN, USA, pp. 140, July 2014.
    document

  69. Design of wideband and high-efficiency antenna array on chip at 1.1 terahertz
    D. Cavallo; A. Visweswaran; N. Llombart; M. Spirito; W. H. Syed; A. Neto; J. Long;
    In 8th European Conference on Antennas and Propagation,
    The Hague, Netherlands, April 2014. (invited paper).

  70. A package-integratable six-port reflectometer for power devices
    R. G. Venter; Rui Hou; K. Buisman; M. Spirito; K. Werner; L. C. N. de Vreede;
    In 2014 IEEE MTT-S International Microwave Symposium (IMS2014),
    pp. 1-4, June 2014.

  71. Front-to-back ratio enhancement of on-chip antenna using artificial dielectrics at 300 GHz
    W. H. Syed; G. Fiorentino; D. Cavallo; M. Spirito; A. Neto; P. M. Sarro;
    In 2014 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium),
    pp. 140-140, July 2014.

  72. A method for de-embedding cable flexure errors in S-parameter measurements
    F. Mubarak; G. Rietveld; M. Spirito;
    In 83rd ARFTG Microwave Measurement Conference,
    pp. 1-5, June 2014.

  73. Enhancement of front to back ratio of on chip antenna by artificial dielectrics at 300 GHz
    W. H. Syed; G. Fiorentino; D. Cavallo; M. Spirito; A. Neto; P. M. Sarro;
    In 2014 39th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz),
    pp. 1-2, Sept 2014.

  74. Front-to-back ratio enhancement of on-chip antenna using artificial dielectrics at 300 GHz
    Syed, WH; Fiorentino, G; Cavallo, D; Spirito, M; Neto, A; Sarro, PM;
    In Proceedings - 2014 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium),
    pp. 140, 2014.

  75. Enhancement of Front to Back Ratio of on Chip Antenna by Artificial Dielectrics at 300 GHz
    Syed, WH; Fiorentino, G; Cavallo, D; Spirito, M; Neto, A; Sarro, PM;
    In 39th International Conference on Infrared, Millimeter, and Terahertz Waves,
    2014.

  76. Silicon-Filled Rectangular Waveguides and Frequency Scanning Antennas for mm-Wave Integrated Systems
    G. Gentile; V. Jovanovic; M. J. Pelk; L. Jiang; R. Dekker; P. de Graaf; B. Rejaei; L. C. N. de Vreede; L. K. Nanver; M. Spirito;
    IEEE Transactions on Antennas and Propagation,
    Volume 61, Issue 12, pp. 5893-5901, Dec 2013.

  77. A 60-GHz Passive Broadband Multibeam Antenna System in Fused Silica Technology
    F. Foglia Manzillo; R. Nastri; M. Spella; G. Gentile; M. Spirito;
    IEEE Antennas and Wireless Propagation Letters,
    Volume 12, pp. 1376-1379, 2013.

  78. A CMOS-compatible metamaterial to enhance the front to back radiation ratio in terahertz antenna for sensing application
    Fiorentino, G; Syed, W; Santagata, F; Spirito, M; Pandraud, G; Neto, A; Sarro, PM; Adam, AJL;
    In Sensors, 2013 IEEE,
    IEEE, pp. 1--4, 2013.

  79. Multimode analysis of transmission lines and substrates for (sub)mm-wave calibration
    M. Spirito; G. Gentile; A. Akhnoukh;
    In 82nd ARFTG Microwave Measurement Conference,
    pp. 1-6, Nov 2013.

  80. Ultra-wide band CPW to substrate integrated waveguide (SIW) transition based on a U-shaped slot antenna
    G. Gentile; B. Rejaei; V. Jovanovic; L. K. Nanver; L. C. N. de Vreede; M. Spirito;
    In 2013 European Microwave Integrated Circuit Conference,
    pp. 25-28, Oct 2013.

  81. Non-intrusive characterization of active device interactions in high-efficiency power amplifiers
    R. Hou; M. Spirito; J. Gajadharsing; L. C. N. de Vreede;
    In 2013 IEEE MTT-S International Microwave Symposium Digest (MTT),
    pp. 1-3, June 2013.

  82. A CMOS-compatible metamaterial to enhance the front to back radiation ratio in terahertz antenna for sensing application
    G. Fiorentino; W. Syed; F. Santagata; M. Spirito; G. Pandraud; A. Neto; P. M. Sarro; A. J. L. Adam;
    In 2013 IEEE SENSORS,
    pp. 1-4, Nov 2013.

  83. Synthesized pulsed bias for device characterization
    A. Kumar Manjanna; K. Buisman; M. Spirito; M. Marchetti; M. Pelk; L. C. N. de Vreede;
    In 81st ARFTG Microwave Measurement Conference,
    pp. 1-4, June 2013.

  84. Characterizing cable flexure effects in S-parameter measurements
    F. Mubarak; G. Rietveld; D. Hoogenboom; M. Spirito;
    In 82nd ARFTG Microwave Measurement Conference,
    pp. 1-7, Nov 2013.

  85. Device characterization for LTE applications with wideband baseband, fundamental and harmonic impedance control
    A. K. Manjanna; M. Marchetti; K. Buisman; M. Spirito; M. J. Pelk; L. C. N. de Vreede;
    In 2013 European Microwave Conference,
    pp. 255-258, Oct 2013.

  86. An FM demodulator operating across 2 #x2013;10GHz IF
    A. Visweswaran; J. R. Long; L. Galatro; M. Spirito; R. B. Staszewski;
    In 2013 IEEE Radio Frequency Integrated Circuits Symposium (RFIC),
    pp. 213-216, June 2013.

  87. Large signal characterization of millimeter wave devices using mixed signal active load-pull
    L. Galatro; A. Akhnoukh; P. Magn�e; M. Marchetti; M. Spirito;
    In 82nd ARFTG Microwave Measurement Conference,
    pp. 1-5, Nov 2013.

  88. Passive Circuit Technologies for mm-Wave Wireless Systems on Silicon
    J. R. Long; Y. Zhao; W. Wu; M. Spirito; L. Vera; E. Gordon;
    IEEE Transactions on Circuits and Systems I: Regular Papers,
    Volume 59, Issue 8, pp. 1680-1693, Aug 2012.

  89. An Experimental Power-Lines Model for Digital ASICs Based on Transmission Lines
    M. Costagliola; D. de Caro; A. Girardi; R. Izzi; N. Rinaldi; M. Spirito; P. Spirito;
    IEEE Transactions on Very Large Scale Integration (VLSI) Systems,
    Volume 20, Issue 1, pp. 162-166, Jan 2012.

  90. 60 GHz mixed signal active load-pull system for millimeter wave devices characterization
    L. Galatro; M. Marchetti; M. Spirito;
    In 80th ARFTG Microwave Measurement Conference,
    pp. 1-6, Nov 2012.

  91. Contactless measurement of in-circuit reflection coefficients
    Rui Hou; M. Spirito; B. J. Kooij; F. van Rijs; L. C. N. de Vreede;
    In 2012 IEEE/MTT-S International Microwave Symposium Digest,
    pp. 1-3, June 2012.

  92. Silicon integrated waveguide technology for mm-wave frequency scanning array
    G. Gentile; M. Spirito; L. C. N. de Vreede; B. Rejaei; R. Dekker; P. de Graaf;
    In 2012 7th European Microwave Integrated Circuit Conference,
    pp. 234-237, Oct 2012.

  93. Silicon VLSI catches the millimeter wave
    J. R. Long; W. L. Chan; Y. Zhao; M. Spirito;
    IEEE Communications Magazine,
    Volume 49, Issue 10, pp. 182-189, Oct 2011.

  94. Millimeter-wave integrated waveguides on silicon
    G. Gentile; R. Dekker; P. de Graaf; M. Spirito; L.C.N. de Vreede; B. Rejaei;
    In Proc. 2011 IEEE Topical Meeting on Silicon Monolithic Integrated Circuits RF Systems (SiRF 2011),
    Phoenix, AZ, pp. 37-40, Jan. 2011. ISBN 978-1-4244-8060-9; DOI 10.1109/SIRF.2011.5719314.

  95. A 4dB NF 60GHz-band low-noise amplifier with balanced outputs
    Y. Jin; J. R. Long; M. Spirito;
    In 2011 IEEE Bipolar/BiCMOS Circuits and Technology Meeting,
    pp. 115-118, Oct 2011.

  96. A 7dB NF 60GHz-band millimeter-wave transconductance mixer
    Y. Jin; J. R. Long; M. Spirito;
    In 2011 IEEE Radio Frequency Integrated Circuits Symposium,
    pp. 1-4, June 2011.

  97. Compact mm-wave power combiners in 65nm CMOS-SOI
    Y. Zhao; J. R. Long; M. Spirito;
    In 2011 IEEE 11th Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems,
    pp. 33-36, Jan 2011.

  98. A 60GHz-band 20dBm power amplifier with 20% peak PAE
    Y. Zhao; J. R. Long; M. Spirito;
    In 2011 IEEE Radio Frequency Integrated Circuits Symposium,
    pp. 1-4, June 2011.

  99. Circuit technologies for mm-wave wireless systems on silicon
    J. R. Long; Y. Zhao; Y. Jin; W. Wu; M. Spirito;
    In 2011 IEEE Custom Integrated Circuits Conference (CICC),
    pp. 1-8, Sept 2011.

  100. Millimeter-wave integrated waveguides on silicon
    G. Gentile; R. Dekker; P. de Graaf; M. Spirito; L. C. N. de Vreede; B. Rejaei;
    In 2011 IEEE 11th Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems,
    pp. 37-40, Jan 2011.

  101. A +18dBm, 79 #x2013;87.5GHz bandwidth power amplifier in 0.13 #x00B5;m SiGe-BiCMOS
    Y. Zhao; J. R. Long; M. Spirito; A. B. Akhnoukh;
    In 2011 IEEE Bipolar/BiCMOS Circuits and Technology Meeting,
    pp. 17-20, Oct 2011.

  102. An effective key management scheme for mobile heterogeneous sensor networks
    S. U. Khan; L. Lavagno; C. Pastrone; M. Spirito;
    In International Conference on Information Society (i-Society 2011),
    pp. 98-103, June 2011.

  103. An energy and memory-efficient key management scheme for mobile heterogeneous sensor networks
    S. U. Khan; C. Pastrone; L. Lavagno; M. A. Spirito;
    In 2011 6th International Conference on Risks and Security of Internet and Systems (CRiSIS),
    pp. 1-8, Sept 2011.

  104. Silicon Filled Integrated Waveguides
    G. Gentile; R. Dekker; P. de Graaf; M. Spirito; M. J. Pelk; L. C. N. de Vreede; B. Rejaei Salmassi;
    IEEE Microwave and Wireless Components Letters,
    Volume 20, Issue 10, pp. 536-538, Oct 2010.

  105. A 60GHz-band 2 #x00D7;2 phased-array transmitter in 65nm CMOS
    W. L. Chan; J. R. Long; M. Spirito; J. J. Pekarik;
    In 2010 IEEE International Solid-State Circuits Conference - (ISSCC),
    pp. 42-43, Feb 2010.

  106. Enhanced RF power amplifiers and device characterization setups using coherent mixed-signal techniques
    L. C. N. de Vreede; M. Pelk; E. Neo; J. Qureshi; M. Spirito; M. Squillante; M. Marchetti;
    In 2010 IEEE 11th Annual Wireless and Microwave Technology Conference (WAMICON),
    pp. 1-5, April 2010.

  107. A mixed-signal load-pull system for base-station applications
    M. Marchetti; R. Heeres; M. Squillante; M. Pelk; M. Spirito; L. C. N. de Vreede;
    In 2010 IEEE Radio Frequency Integrated Circuits Symposium,
    pp. 491-494, May 2010.

  108. Compact transformer power combiners for millimeter-wave wireless applications
    Y. Zhao; J. R. Long; M. Spirito;
    In 2010 IEEE Radio Frequency Integrated Circuits Symposium,
    pp. 223-226, May 2010.

  109. A 60GHz-band Millimeter-wave active balun with #x00B1;5 #x00B0; phase error
    Y. Jin; M. Spirito; J. R. Long;
    In The 5th European Microwave Integrated Circuits Conference,
    pp. 210-213, Sept 2010.

  110. A multi-step phase calibration procedure for closely spaced multi-tone signals
    M. Mirra; M. Marchetti; F. Tessitore; M. Spirito; L. C. N. de Vreede; L. Betts;
    In 75th ARFTG Microwave Measurement Conference,
    pp. 1-5, May 2010.

  111. Antenna interface for mm-wave communication
    S. Malevsky; M. Spirito; J. R. Long;
    In 2010 Loughborough Antennas Propagation Conference,
    pp. 565-568, Nov 2010.

  112. Millimeter-wave passive components on silicon for wireless communication applications
    Y. Zhao; Y. Jin; M. Spirito; J. R. Long;
    In 2009 16th IEEE International Conference on Electronics, Circuits and Systems - (ICECS 2009),
    pp. 972-975, Dec 2009.

  113. Thermal simulation and ultrafast IR temperature mapping of a Smart Power Switch for automotive applications
    M. Riccio; A. Irace; G. Breglio; P. Spirito; V. Kosel; M. Glavanovics; A. Satka;
    In 2009 21st International Symposium on Power Semiconductor Devices IC's,
    pp. 200-203, June 2009.

  114. A mixed-signal approach for high-speed fully controlled multidimensional load-pull parameters sweep
    M. Squillante; M. Marchetti; M. Spirito; L. C. N. de Vreede;
    In 2009 73rd ARFTG Microwave Measurement Conference,
    pp. 1-5, June 2009.

  115. A 60GHz-band 1V 11.5dBm power amplifier with 11% PAE in 65nm CMOS
    W. L. Chan; J. R. Long; M. Spirito; J. J. Pekarik;
    In 2009 IEEE International Solid-State Circuits Conference - Digest of Technical Papers,
    pp. 380-381,381a, Feb 2009.

  116. Energy Detection Spectrum Sensing with Discontinuous Primary User Signal
    F. Penna; C. Pastrone; M. A. Spirito; R. Garello;
    In 2009 IEEE International Conference on Communications,
    pp. 1-5, June 2009.

  117. Probability of Missed Detection in Eigenvalue Ratio Spectrum Sensing
    F. Penna; R. Garello; M. A. Spirito;
    In 2009 IEEE International Conference on Wireless and Mobile Computing, Networking and Communications,
    pp. 117-122, Oct 2009.

  118. Active Harmonic Load #x2013;Pull With Realistic Wideband Communications Signals
    M. Marchetti; M. J. Pelk; K. Buisman; W. C. E. Neo; M. Spirito; L. C. N. de Vreede;
    IEEE Transactions on Microwave Theory and Techniques,
    Volume 56, Issue 12, pp. 2979-2988, Dec 2008.

  119. A Monolithic Low-Distortion Low-Loss Silicon-on-Glass Varactor-Tuned Filter With Optimized Biasing
    K. Buisman; L. C. N. de Vreede; L. E. Larson; M. Spirito; A. Akhnoukh; Y. Lin; X. Liu; L. K. Nanver;
    IEEE Microwave and Wireless Components Letters,
    Volume 17, Issue 1, pp. 58-60, Jan. 2007.

  120. Adaptive Multi-Band Multi-mode power amplifier using integrated varactor-based tunable matching networks
    W. C. E. Neo; Y. Lin; X.-D. Liu; L. C. N. de Vreede; L. E. Larson; M. Spirito; M. J. Pelk; K. Buisman; A. Akhoukh; A. De Graauw; L. K. Nanver;
    IEEE Journal of Solid-State Circuits,
    Volume 41, Issue 9, pp. 2166-2176, Sept. 2006. ISSN 0018-9200.

  121. All electrical resistivity profiling technique for ion implanted semiconductor materials
    S. Daliento; L. Mele; P. Spirito; B. N. Limata;
    Materials Science and Engineering B,
    pp. 310-313, 2005.

  122. Surface-passivated high-resistivity silicon as a true microwave substrate
    M. Spirito; F. de Paola; L. K. Nanver; E. Valletta; B. Rong; B. Rejaei; L. C. N. de Vreede; J. N. Burghartz;
    IEEE Transactions on Microwave Theory and Techniques,
    Volume 53, Issue 7, pp. 2340-2347, Jul. 2005.

  123. Low-distortion, low-loss varactor-based adaptive matching networks, implemented in a silicon-on-glass technology
    K. Buisman; L.C.N de Vreede; L.E. Larson; M. Spirito; A. Akhnoukh; Y. Lin; X. Liu; L.K. Nanver;
    In Proc. IEEE Radio Frequency Integrated Circuits Symposium,
    pp. 389-392, 2005.
    document

  124. Distortion-free varactor diode topologies for RF adaptivity
    K. Buisman; L.C.N de Vreede; L.E. Larson; M. Spirito; A. Akhnoukh; T.L.M. Scholtes; L.K. Nanver;
    In Proc. IEEE MTT-S International Microwave Symposium,
    pp. 157-160, 2005.
    document

  125. Improved hybrid SiGe HBT class-AB power amplifier efficiency using varactor-based tunable matching networks
    W. C. E Neo; X. Liu; Y. Lin; L. C. N. de Vreede; M. Spirito; A. Akhnoukh; L. K. Nanver; L. E. Larson; A. de Graauw;
    In Proc. IEEE Bipolar/BiCMOS Circuits and Technology Meeting BCTM,
    pp. 108-111, 2005.

  126. On the optimum 2nd harmonic source and load impedances for the efficiency-linearity trade-off of RF LDMOS power amplifiers
    D. M. H. Hartskeerl; I. Volokhine; M. Spirito;
    In 2005 IEEE Radio Frequency integrated Circuits (RFIC) Symposium - Digest of Papers,
    pp. 447-450, June 2005.

  127. The Electro-Thermal Smoothie Database Model for LDMOS Devices
    V. Cuoco; W.C.E. Neo; M. Spirito; O.Yanson; N. Nenadovic; L.C.N. de Vreede; H.F.F. Jos; J.N. Burghartz;
    In Proc. ESSDERC,
    Leuven, Belgium, pp. 457-460, Sep. 2004. ISBN 0-7803-8479-2.

  128. Power amplifier PAE and ruggedness optimization by second-harmonic control
    M. Spirito; L.C.N. de Vreede; L.K. Nanver; S. Weber; J.N. Burghartz;
    IEEE Journal of Solid-State Circuits,
    Volume 38, Issue 9, pp. 1575-1583, 2003.

  129. Power amplifier PAE and ruggedness optimization by second-harmonic control
    M. Spirito; L. C. N. de Vreede; L. K. Nanver; S. Weber; J. N. Burghartz;
    IEEE Journal of Solid-State Circuits,
    Volume 38, Issue 9, pp. 1575-1583, Sept 2003.

  130. Low-loss passives for 2nd-harmonic termination control in power amplifiers for mobile applications
    M. Spirito; L.C.N. de Vreede; L.K. Nanver; J. Mueller; J.N. Burghartz;
    In 4th Topical Meeting on Silicon Monolithic Integrated Circuits RF Systems,
    Garmisch, Southern Germany, pp. 49-52, Apr. 2003.

  131. A 2 GHz high-gain differential InGaP HBT driver amplifier matched for high IP3
    M.P. van der Heijden; M. Spirito; L.C.N. de Vreede; F. van Straten; J.N. Burghartz;
    In 2003 IEEE MTT-S International Microwave Symposium,
    Philadelphia, PA, USA, pp. 235 -238, Jun. 2003.

  132. A Calibration Procedure for On-Wafer Differential Load-Pull Measurements
    M. Spirito; M.P. van der Heijden; M. de Kok; L.C.N. de Vreede;
    In 61st ARFTG,
    Philadelphia, Pennsylvania, USA, Jun. 2003.

  133. Low-loss passives for 2nd-harmonic termination control in power amplifiers for mobile applications
    M. Spirito; L. C. N. de Vreede; L. K. Nanver; J. E. Mueller; J. N. Burghartz;
    In 2003 Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems, 2003. Digest of Papers.,
    pp. 49-52, April 2003.

  134. A calibration procedure for on-wafer differential load-pull measurements
    M. Spirito; M. P. van der Heijden; M. de Kok; L. C. N. de Vreede;
    In 61st ARFTG Conference Digest, Spring 2003.,
    pp. 1-4, June 2003.

  135. A 2 GHz high-gain differential InGaP HBT driver amplifier matched for high IP3
    M. P. van der Heijden; M. Spirito; L. C. N. de Vreede; F. van Straten; J. N. Burghartz;
    In IEEE MTT-S International Microwave Symposium Digest, 2003,
    pp. 235-238 vol.1, June 2003.

  136. Power Amplifier Optimization for Mobile Application by Second Harmonic Control
    M. Spirito; L.N.C. de Vreede; L.K. Nanver; S. Weber; J.N. Burghartz;
    In Proc. ProRISC 2002,
    Veldhoven, The Netherlands, pp. 471-475, Nov. 2002.

  137. Power Amplifier PAE and Ruggedness Optimization by Second Harmonic Control
    M. Spirito; L.C.N. de Vreede; L.K. Nanver; S. Weber; J.N. Burghartz;
    In Proc. 2002 IEEE BCTM,
    Monterey, CA, USA, pp. 173-176, Sept. 2002. ISBN 0-7803-7562-9.

  138. Power amplifier PAE and ruggedness optimization by second harmonic control
    M. Spirito; L. C. N. de Vreede; L. K. Nanver; S. Weber; J. N. Burghartz;
    In Proceedings of the Bipolar/BiCMOS Circuits and Technology Meeting,
    pp. 173-176, 2002.

  139. Power Amplifier PAE and Ruggedness Optimization by Second Harmonic Control
    M. Spirito; L.N.C. de Vreede; L.K. Nanver; S. Weber; J.N. Burghartz;
    In ProRISC 2001,
    Veldhoven, The Netherlands, pp. 623-629, Nov. 2001.
    document

  140. A Novel Method for Characterizing RF Automated Tuners
    M. Spirito; P. Valk; R. Mohmoudi; M. de Kok; J.L. Tauritz;
    In ARFTG Conference,
    San Diego, Nov. 2001.
    document

  141. Infrared Thermal Imaging of SiNx membranes
    A. Irace; G. Breglio; P. Spirito; P.M. Sarro;
    In SPIE Photonics West Conf.,
    San Diego, USA, Jul. 2000.

  142. Characterization and Verification of WCDMA Power Amplifiers
    R. Mahmoudi; M. Spirito; J.L. Tauritz;
    In IEEE Topical Workshop on Power Amplifiers for Wireless Communications,
    San Diego, Sep. 1999.

  143. A Novel Load and Source Tuning System for Balanced and Unbalanced WCDMA Power Amplifiers
    R. Mahmoudi; M. Spirito; P. Valk; J.L. Tauritz;
    In 54th ARFTG Conference,
    Atlanta, Dec. 1999.

  144. Two silicon optical modulators realizable with a fully compatible bipolar process
    G. Breglio; A. Cutolo; A. Irace; P. Spirito; L. Zeni; M. Iodice; P.M. Sarro;
    IEEE Journal of Quantum Electronics vol. 4,
    Issue 6, pp. 1003-1010, 1998.

  145. Recombination centers identification in very thin silicon epitaxial layers via lifetime measurements
    S. Daliento; A. Sanseverino; P. Spirito; P.M. Sarro; L. Zeni;
    IEEE Electr. De van Lett,
    Volume 17, Issue 3, pp. 148-150, 1996.

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Last updated: 15 Jun 2020