Generic Reflectionless Topology For Distributed Filters

A new generic reflectionless filter topology can be used to design not only a filter having zero reflection at one port but also a filter having zero reflection at both ports. The approach allows straightforward synthesis of reflectionless filters using a rigorous design methodology, without resorting to additional optimization techniques or numerical methods--as borne out by tests.
→ Read more

Microwave and Wireless Components Letters Seeks New Editor

The IEEE Microwave Theory and Techniques Society is searching for an Editor-in-Chief of IEEE Microwave and Wireless Components Letters to assume the position in 2022. If you are interested, please submit your CV and a statement that shows you understand the time required to fulfill the position. Applications should be sent to George E. Ponchak before 28 May.
→ Read more

IMS is On! Live 7-10 June in Atlanta; Virtual 20-25 June

The International Microwave Symposium is on, as a double-barrelled event: The live program at the Georgia World Congress Center in Atlanta, GA, 7-10 June, followed by a virtual event 20-25 June. Live or virtual, the event will offer extensive technical programs, for IMS itself and for the associated Radio Frequency Integrated Circuits Symposium (RFC, Live 7-9 June; Virtual 20-25 June) and the ARFTG Microwave Measurement Conference (Live in Atlanta 10, June, Virtual 20-25 June)
→ Read more

Extended Deadline for J-ERM Microwave Biomedical Special Issue

10 June (rather than 1 May) is now the deadline for submitting papers to a special IMBioC 2021 issue of the IEEE Journal of Electromagnetics, RF and Microwaves in Medicine and Biology (J-ERM), to be published in September. The special issue is intended to allow to allow researchers who had intended to participate in the microwaves biomedical conference (canceled due to covid-19) to showcase their work. Address questions to JermIMBioC21@gmail.com.
→ Read more

A 1024-Element Ku-Band SATCOM Dual-Polarized Receiver

A 1024-element dual-polarized Ku-band (10.7-12.7 GHz) satellite communication (SATCOM) receive (RX) phased array consists of four 16 x 16 subarray tiles (each comprising 64 eight-channel beamformer chips, 256 dual-channel low-noise amplifiers (LNAs), and 256 dual-polarized antennas built on an affordable printed circuit board). Using LNAs just after the antennas enables a low-noise operation with an antenna gain-to-noise temperature of 10.5 dB/K.
→ Read more

Webinar: Power Amps for High Efficiency above 100 GHz

What are the requirements for future digital arrays? What kind of efficiency and output power will the next generations of power amps have to attain to enable upper millimeter-wave band (100-300 GHz) communications? James F. Buckwalter (University of California, San Diego) will review device technologies for compound semiconductors and silicon processes and discuss power amplifier circuit designs based on loadline and matching element losses.
→ Read more

Reflective Parametric Frequency-Selective Limiters With Sub-dB Loss

A novel design methodology achieves reflective diode-based parametric frequency-selective limiters (pFSLs) with low-power thresholds (Pth) and sub-dB insertion-loss values (ILs.s) for driving power levels lower than the power threshold. The prototype pFSL can operate around ~2.1 GHz while exhibiting record-low Pth (-3.4 dBm) and ILs.s (0.94 dB) values.. while selectively attenuating undesired signals.
→ Read more

To Attend Wireless Power Transfer Conference Free, Register by 18 May

MTT-S members can attend the virtual 2021 IEEE Wireless Power Transfer Conference (WPTC, Virtual/San Diego, 1-4 June) without charge.. if they register by 18 May. WPTC will run parallel to the IEEE Workshop on Emerging Technologies in IEEE's Wireless Power Week. (WPW2021). The conference features papers on a wide range of WPT technologies spanning the electromagnetic spectrum.
→ Read more

Reverse-Modulated Dual-Branch Power Amps for 4G/5G

A generalized theory and new design methodology for reverse-load-modulated dual-branch (RMDB) power amplifiers (PAs) uses a current-biased transistor in the main branch to realize optimal load modulation without using the impedance transformers at the output of the PAs. A prototype demonstrated broad bandwidth (2.6-3.8 GHz), allowing it to cover multiple bands in 4G LTE and 5G New Radio (NR) standards.
→ Read more

Coming Up: Latin America, Wireless Power, Microwave Week

Upcoming MTT-S sponsored conferences include: Latin America Microwaves (LAMC, Virtual, from Cali, Colombia, 26-28 May); Wireless Power Transfer (WPTC, Virtual, 1-4 Jun.); International Microwave Symposium (IMS / RFIC / ARFTG, In-Person in Atlanta, 7-10 Jun., Virtual 20-25 Jun.); Radio Frequency Integration Technology (RFIT, Hybrid virtual and in-person, Hualien, Taiwan, 25-27 Aug.), and more.
→ Read more