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April 2021
 
 

THz MIMO for Mapping 3D Surfaces of Objects in Space

Conventional wavenumber domain integration of signals received from space-borne objects via THz MIMO fails to accurately reconstruct continuous surfaces owing to the fixed step length in the range direction. To overcome this shortcoming, a phase unwrapping-free multi-layer wideband frequency interferometry algorithm (MWFIA) was proposed and tested. Results in the 0.22 THz band bore out the superior performance predictions.

 
 

Mini-Circuits’ RCDAT-50G-30 is a USB and Ethernet-controlled programmable attenuator with an ultra-wide frequency range from 0.1 to 50 GHz and an attenuation range from 0 to 31.5 dB in 0.5 dB steps. It’s a perfect solution for simulating transmission loss in a wide range of test applications including 5G network infrastructure and microwave point-to-point links. User-friendly GUI software and full API for programmers included.

 
 

Human Emissions at Sub-THz Frequencies

A team of Russian and Israeli researchers presents evidence that human skin naturally emits radiation in the sub-THz frequency band. Radiometry of 32 human subjects (at 480 to 700 GHz) showed results substantially different from expected black-body values, an effect that appears to be owing to the structure of the sweat ducts.
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CFP: Microwave Filter Workshop

15 June is the deadline for submitting papers to the International Microwave Filter Workshop (IMFW 2021, Perugia, Italy, 17-19 Nov.), a unique opportunity to bring together scientists from industry and academia who work on filters, to share the most recent advances in filter theory, technology and manufacturing.
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Biotelemetry, Wireless Power for Implants

An "efficient and complete" wireless power transfer system for multipurpose biomedical implants comprises a self-diplexing implantable antenna, an efficient rectifier, and a WPT transmitter. The system fits in a package of 50 x 50 x 1.6 mm³, and is optimized to transfer power at 1470 MHz to a device implanted at 55-mm.
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CFP: J-ERM Microwave Biomedical Special Issue

The IEEE Journal of Electromagnetics, RF and Microwaves in Medicine and Biology (J-ERM) has proposed a special September 2021 issue to allow researchers who intended to participate in IMBioC 2021 (the microwaves biomedical conference cancelled due to covid-19) to showcase their work. Address questions to JermIMBioC21@gmail.com.
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Sponsored
 
 

This white paper demonstrates how Cadence® software tools, inclusive of the AWR Design Environment® platform, support SiP design for 5G communication system front-end architectures.

 
 

Wolfspeed offers a range of SiC products

 
 

28-GHz SOI-CMOS Doherty Power Amp

A new transformer-based series output combiner design achieves true-Doherty load modulation in a compact footprint using a three-stack FET topology. A proof-of-concept prototype was made in 22-nm CMOS fully depleted silicon-on-insulator (FD-SOI) technology with a core area of 0.2 mm². At 28 GHz, the device demonstrated 22.5 dBm saturated output power (Psat), 21.1 dBm one-dB output compression point, and 28.5% peak power-added efficiency (PAE).
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Webinar: Microwaves and Quantum Computing

Catch up with the archived MTT-S's 13 April webinar and listen in on Joseph Bardin (University of Massachusetts, Amherst and Google): Quantum computing offers the potential for an exponential speed-up of certain classes of computational problems...so a practical quantum computer has been an object of intense research. Dr. Bardin, who is also a member of the Google Quantum AI team, will discuss how microwaves can be used in quantum computing, with a focus on superconducting qubit technology.
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Ultralow-Power Bluetooth LE Receiver

An ultralow-power direct-conversion Bluetooth-low-energy (BLE) receiver front-end employs current-reuse and subthreshold techniques. Its stacked, self-biased low-noise amplifier consumes 400 μW, with a 3.2-dB noise figure and a high gain programmable from 18 to 31 dB to meet system specifications despite process, supply voltage, and temperature variations. The integer-N phase-locked loop (PLL) is located entirely inside the VCO inductor, reducing overall die area by 8%.
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Comment Now on MTT-S Handbook Update

Comments are due by 16 April on the updated MTT-S Handbook, which includes amendments to the MTT-S Constitution and the Bylaws, as approved by the MTT-S Administrative Committee (AdCom) and reviewed by the IEEE. The updated Handbook and comment form are provided at mtt.org/governance-documents-bylaw-changes for MTT-S member review, comments, and objections, if any. All changes to the handbook will go into effect unless 10% of the Society membership objects by 16 April 7:00 UTC.
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Fourier-Domain DAC-Based Transmitter

A fully integrated Fourier-domain digital-to-analog converter-based transmitter generates a coherent bandwidth of up to 2 GHz by exploiting the relationship between the discrete and the continuous-time Fourier transform, improving the digital-to-analog converter (DAC) sampling rate and the entire digital signal processing speed by up to two orders of magnitude compared to conventional Txs, while demonstrating maximum data rates of 4 Gb/s.
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Coming Up: Texas, Latin America Symposia

Note: The MTT-S IEEE Microwave Newsletter was to begin appearing on the first Wednesday of each month, beginning with this issue. Production issues look likely to delay that debut by a day or two, but the first Wednesday will be the date from May onward. Upcoming MTT-S sponsored conferences include: 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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