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March 2021
 
 

Ultra-Low-Noise Amplifier

Developers of a "transformative" new low-noise amplifier (LNA) report that the device's noise temperature is four times lower than conventional LNAs at 25 °C, decreasing to 4.5K at -40 °C. The design incorporates a stable, integrated noise source for calibration. The device is tailored for applications like space communications and radio astronomy...without the added cost of cryogenic systems.

 
 

Mini-Circuits’ NMD adapters offer a practical solution to protect your high-frequency VNA ports from damage and save cost on expensive VNA cables. Available from stock in ruggedized 2.92 mm and 2.4 mm connector types, these adapters mate directly with high-frequency VNA ports, giving you the flexibility to use VNA cables or test cables with standard connector series.

 
 

In Memoriam: Tatsuo Itoh

MTT-S Past-President Tatsuo Itoh, Northrop Grumman Professor of Microwave and Millimeter Wave Electronics at the University of California, died at home on 4 March. He was 80. Prof. Itoh was born in Tokyo and earned his bachelor's and master's degrees in Japan before moving to the University of Illinois for his Ph.D. He was a Life Fellow of IEEE, received the 2001 Nikola Tesla Award and Third Millennium Medal, and was editor-in-chief of the IEEE Transactions on Microwave Theory and Techniques from 1983 through 1985. (The Society's award for best Transactions paper is named after him.) Prof. Itoh wrote or co-wrote 48 books and chapters, and nearly 1,500 papers, cited more than 63,000 times. 
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In Memoriam: Tapan Sarkar

Tapan Sarkar, professor emeritus of Electrical Engineering and Computer Science at Syracuse University, died on 12 March in Syracuse, NY. He was 72. Prof. Sarkar was born in Kolkata, India, and educated in India, Canada, and the U.S. He received the IEEE Electromagnetics Award in 2020, and served as president of the IEEE Antennas and Propagation Society in 2015. He authored or co-authored more than 380 papers, 32 book chapters, and 16 books. Prof Sarkar served as associate editor of IEEE Transactions on Electromagnetic Compatibility and IEEE Transactions on Antennas and Propagation, and was known as a strong advocate for IEEE and MTT-S. 
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FT-MUSIC Algorithm for Through-Wall Imaging

A fast, low-cost, through-the-wall radar imaging (TWRI) system, is based on a vector network analyzer (VNA), a couple of switches, and an array of Vivaldi antennas. The systems incorporated a hybrid imaging algorithm, FT-MUSIC (Fourier transform multiple signal classification), which outperforms four conventional algorithms--delay and sum (DAS), FT alone, MUSIC alone, and hybrid DAS-MUSIC--in imaging human subjects and iron bars separated from the antenna by 5 m and a tuff (volcanic cinder) wall.
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European Microwave Papers Due 28 March

28 March is the extended deadline for submitting 4-page preliminary papers for 2021's European Microwave Week (EuMW 2021, London, 10-15 Oct.). The conference and exposition include the European Microwave Conference, the European Microwave Integrated Circuits Conference (EuMIC) and the European Radar Conference (EuRAD)--plus the Forum on Defence, Security, and Space, the Automotive Forum, and the Beyond 5G Forum. Submissions will the eligible for live presentation and publication in IEEE Xplore.
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Join this webinar to learn about the Cadence EMX® Planar 3D Solver and how the newest features optimally solve passive structures in silicon chips.

 
 

5G communication specifications are reaching beyond the capabilities of incumbent technologies. Learn how Wolfspeed GaN on SiC technology can assist base station PA designers in meeting these evolving requirements.

 
 

Optically Transparent Near-Field Focusing Metasurface

An indium-tin oxide (ITO)-based, optically transparent reflection-type metasurface transmits visible light while achieving near-field focusing (NNF) of microwaves and optimizing the tradeoff between phase-shift characteristics and efficiency loss. A new element with two degrees of freedom allows phase shift range to reach 350° while keeping | S₁| less than -2.5 dB.
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MWCL Special Issue on Radar & Microwave Sensor Systems

IEEE Microwave and Wireless Components Letters seek papers for a special January 2022 issue on Radar and Microwave Sensor Systems. Submissions are due by 1 Sept. covering such topics as microwave and mmWave radar and sensor system design, imaging systems, distributed radar systems, hardware/software co-design, mmWave sensor MMICs, novel modulation schemes, and applications.
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Three-Stage Load-Modulated Power Amplifier

In a new three-stage load-modulated power amplifier, three amplifiers, each with different biasing, are connected to a four-port coupler and balanced to provide flexible output power back-off (OBO) and achieve high efficiency over a large OBO range. Moreover, OBO level can be adjusted simply be re-setting bias conditions of the relevant amplifiers, allowing OBO range reconfiguration after fabrication.
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Call for Nominations: Wiley-IEEE Press Awards

Wiley-IEEE Press invites nominations for two book awards. The Textbook Award will recognize an outstanding Wiley-IEEE Press textbook published during the past five years. The Professional Book Award will recognize an outstanding monograph or professional book published during the past three years. Nominations must be submitted no later than midnight, EDT on 31 March. See the guidelines for format and submission address.
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Compact Surface-Plasmon Bandpass Filter for 5G

A novel, ultracompact plasmonic bandpass filter (BPF) exploits effective localized surface plasmons (ELSPs). The ELSP resonator's dipolar mode resonance frequency is relatively insensitive to variations in cross-sectional area and shape, so developers can significantly miniaturize the filter's occupied area. Moreover, the unloaded quality factor of the ELSPs resonator can be flexibly tuned and adjusted to be much larger than that of conventional resonators.
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Coming Up: Wireless & Microwave; Texas

Note: Beginning with its 7 April issue, the MTT-S IEEE Microwave Newsletter will appear on the first Wednesday of each month, rather than on the third Wednesday. And keep an eye out for upcoming MTT-S sponsored conferences, which include: Wireless and Microwave Technology (WAMICON, Virtual, 10-15 Apr.); Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS, Virtual, 18-20 May); Latin America Microwaves (LAMC, Cali, Colombia, 26-28 May), 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 (roberto.gomezg@uah.es) and newsletter editor Douglas McCormick (douglas.mccormick.us@ieee.org).

 
 
 
 
 


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