MIMO FMCW Radar Detects, Locates Voices

A new method uses multiple-input, multiple-output (MIMO) frequency-modulated continuous-wave (FMCW) radar to detect voices (by movements of the larynx) and locate the speaker among many people in a space. The approach compensates for body motion to isolate speech vibrations and clarify the signal.
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IMS 2022 Session Proposals Due 20 Sept.

The deadline is 20 Sept. for submitting proposals for workshops, technical lectures, Focus and special sessions, and panels at the 2022 International Microwave Symposium (IMS, Denver, Colorado, USA 19-24 June 2022). Potential organizers are asked to submit short proposals with a title, abstract and preliminary list of speakers.
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Simultaneous Wireless Information and Power Transfer

A new phased-array system for high-power simultaneous wireless information and power transfer (SWIPT) uses four 5.8-GHz, injection-locked magnetrons. Transmission efficiency fluctuated no more than 0.5% over several tested modulation rates. Dynamic beamforming does not affect communication quality. Signals were intelligible over a full 180° while the system could transmit up to 1637 W.
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Radio & Wireless Week: "Late News Summaries" Due 1 Oct.

Radio & Wireless Week 2022 (RWW, Las Vegas, NV, 16-19 Jan.) is coming up fast, but innovators can still submit "late news summary" papers through 1 Oct. The conference includes the Radio & Wireless Symposium (RWS), Power Amplifiers for Radio & Wireless Applications (PAWR), Silicon Monolithic Integrated Circuits in RF Systems (SiRF), Space Hardware & Radio (SHaRC), and Wireless Sensors & Sensor Networks (WiSNet).
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5 Picojoule-per-Bit OOK Transmitter for IoT Applications

An 800-MHz OOK transmitter for short-range Internet-of-Things (IoT) applications employs a power-efficient MEMS-based RF oscillator to generate the carrier frequency. The transmitter (in 180-nm CMOS) delivers -12.4-dBm output power while consuming 0.24-mW with -126.3-dBc/Hz phase noise at 100-kHz offset. The device can deliver data at 120 Mbps at 5 pJ/bit.
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MTT-S Webinar: Modelling Materials for 5G and Energy

At 9 a.m. EDT on Tuesday, 14 Sept., join QuickWave author Malgorzata Celuch (QWED and the Warsaw University of Technology) for "Modelling-Based Characterisation of Materials for Application in 5G and Energy Sectors." Dr. Celuch will explore the synergies of electromagnetic modelling; materials modeling; and combined modelling and material measurements in emerging technologies and green energy.
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MIMO Radars With Biomimetic Antenna Arrays

With "ears" mechanically linked so that they can resolve differences of as little as a nanosecond between a sound's arrival at the left and right ears, a tiny New World fly, Ormia ochracea, uses sound to locate its prey. Researchers are applying biomimetic antenna arrays (BMAAs) to MIMO arrays, helped by a genetic algorithm for optimizing antenna positions and BMAA parameters, to broaden angular range, improve resolution, or narrow beamwidth.
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Vote for Ad-Com At-Large Members by 20 Sept.

MTT-S members can vote for the Society's two at-large Ad-Com members until 4:00 p.m. Eastern time on 20 Sept. The online balloting requires members to sign in their IEEE Account (forgotten passwords may be retrieved). Address questions to ieee-mttvote@ieee.org or +1 732 562 3904. As of 25 Aug., 13.2% of members had voted (compared with 22.9% by the time the polls closed last year).
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Small Coaxial Resonant Heater for Additive Manufacturing

A small, coaxial resonant applicator allows high-speed microwave-heating-assisted additive manufacturing using multiple materials, such as continuous carbon fiber reinforced polymer composites, thermoplastic, and metal parts. The coaxial design (with resonant frequency between 2.4 and 2.5 GHz) helps make the device compact.
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Coming Up: Electronic Packaging; Microwave Filters

Upcoming MTT-S sponsored conferences include: 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.), Microwaves, Communications, Antennas, Biomedical Engineering & Electronic Systems (COMCAS, Tel Aviv, 1-3 Nov.), and more.
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