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August 2021

"Mixture of Experts" Modeling of RF Power Amps

A new, probabilistic piecewise "mixture of experts" (ME) model for RF power amps allows several submodels to cooperate to produce a more accurate picture. The ME framework theory can be applied to model complex baseband signals and nonlinearities, overcoming the shortcomings of previous piecewise models. The models, confirmed by extensive measurements on a variety of power amps, outperform the state of the art.


Mini-Circuits is excited to announce the launch of its new line of solid-state power amplifiers for industrial RF and microwave energy applications. The new amplifiers will support ISM bandwidths from 27 MHz to 5.8 GHz with power levels spanning 10W up to 25 kW. The first 4 model releases are now available to sample with more designs coming soon!


Cost-Efficient Antenna-on-Chip Monostatic Radar

A D-band monostatic radar system (operating at 144.6-161 GHz) is constructed in a low-cost, 3-D-printed case with a built-in lens to boost the on-chip antenna directivity. The compact monolithic microwave integrated circuit (MMIC) features improved signal-to-noise ratios and built-in self-test. The prototype consumed only 84.7 mA from a 3.3-V supply.
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Webinar: Spectrum-Sharing Above 100 GHz for 6G

Join IEEE Fellow and microwave pioneer Michael Marcus (Marcus Spectrum Solutions and Virginia Tech) and Josep Miquel Jornet (Northeastern University) on 10 August for this month's Second Tuesday webinar, "The spectrum sharing challenges for enabling large bandwidth mmWave/THz spectrum access above 100 GHz for 6G and other applications."
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Low-Noise 20-42-GHz IQ Receiver for 5G Wideband

A new 20-42-GHz in-phase and quadrature (IQ) receiver--perhaps the first wideband I/Q receiver to cover the entire mmWave 5G band using 22-nm CMOS fully depleted silicon on insulator (FD-SOI) construction. The prototype showed a peak conversion gain of 25.3 dB with a 3-dB bandwidth of 19.8-42 GHz and an I and Q bandwidth of 5.7 GHz over the whole 5G mmWave band, with noise figures of 2.7-4.2 dB.
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MTT Transactions Special Issues on WPTC & IWS

Time is running short for submitting papers to two upcoming Transactions on Microwave Theory and Techniques "mini-special issues." 15 August is the deadline for submissions to the Wireless Power Transfer Conference (WPTC) special issue. And 15 September is the due date for submitting papers to the International Wireless Symposium (IWS) special issue. 
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Join Wolfspeed and Richardson RFPD at EDI CON online 8/18/21. We will discuss how to develop a Troposcatter (4.4-5 GHz) transceiver using Wolfspeed PA’s and a SOM including an ADI transceiver.


mmWave and THz TRX in SiGe BiCMOS

An invited review details the progress of silicon-germanium (SiGe) bipolar-complementary metal-oxide-semiconductor (BiCMOS) technology-based integrated circuits over the last two decades, focusing on .transceiver (TRX) realizations in the millimeter-wave range, from 60 GHz into THz territory frequencies above 300 GHz.
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Four-Part IEEE Digital Transformation Course

Join Roberto Saracco (IEEE Senior Member, chair of the IEEE Future Directions Committee's Industry Advisory Board, and author of the daily IEEE Future Directions blog) for a wide-ranging, four-course examination of Digital Transformation--the transfiguration of life and commerce as the value of products and services moves "from atoms to bits," from physical objects to information and analysis.
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Sub Microwatt CMOS Rectifier for Wake-Up Radio

A wide-range, sub microwatt CMOS rectifier for passive wake-up radios is designed to work efficiently at input power levels down to -31 dBm. Tests measured a 30% power conversion efficiency (PCE) over input powers from -23 to -13 dBm for a 1- MΩ output load at 868 MHz. The sensitivity (-31 dBm for a 1-V output voltage across a capacitive load) is the lowest reported in the literature so far.
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Testing Sub-mmWaves for Corneal Measurements

A new submillimeter-wave system successfully measured the absolute thickness and free water content of corneal phantoms--gelatin-based proxies for living corneas--the first time submillimeter waves have been used to extract both pieces of information simultaneously. Thickness measurements were accurate to within an average 65 micrometers (or 1/17th of a wavelength).
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Compact Compression for Gigawatt Microwave Pulses

A new two-stage approach to passive microwave pulse compression converted 100-MW, 3.6-μs input pulses (generated by commercial klystrons) into 1.2-GW, 100-ns output (full-width at half-maximum, FWHM, duration). The approach could be useful in high-gradient accelerators and generating hot, dense plasmas.
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Coming Up: Optoelectronics, Electronic Packaging

Upcoming MTT-S sponsored conferences include: Microwaves and Optoelectronics (IMOC, Fortaleza, Brazil, 26-29 Sep.), Electrical Performance of Electronic Packaging and Systems (EPEPS, Virtual, 17-20 Oct.), Microwave Filters (IMFW, Perugia, Italy, 17-19 Nov.), Space Terahertz Technology (ISSTT, 4-7 Oct, Baeza, Spain.), and more.
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Have Something to Share With MTT-S Colleagues?

Members of the IEEE Microwave Theory and Techniques Society who want to share information about events, conferences, contests, publications, or other topics of interest to MTT-S colleagues are invited to e-mail Newsletter Working Group chair Roberto Gómez García ( and newsletter editor Douglas McCormick (


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