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RIGOL App Note - DNA5000/6000 Vector Network Analyzers in MRI
New RIGOL App Note shows how to use the DNA5000/6000 Series Vector Network
Analyzers (VNA) high dynamic range, wide power sweeps, and rich analysis to underpin
dependable R&D measurements for MRI RF hardware.
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| | Circuit-Loaded Microwave Metadevices: Current State of the Art and Future Directions | This article presents an overview of the state-of-the-art and future directions of circuit-loaded microwave metadevices. The integration of metamaterial- and metasurface-devices with circuit components enables practical multifunctional and actively tunable behaviors such as adaptive wave control at the aperture level. A basis for modeling unit cells with lumped, active, nonlinear, and time-varying circuit elements demonstrates a powerful design approach for a broad range of EM responses that cannot be achieved through passive geometries alone. Co-simulation, inverse design and optimization techniques are useful to address new device constraints that are encountered. Future challenges are aimed at developing a new, unified modeling framework. | | | |
| | Millimeter-Wave Radar-Based Tracheal Respiratory Sound (rTS) Monitoring | Conventional bio-radar systems rely solely on gross body motion estimation to understand respiratory activity. However, such methods are fundamentally limited at any given moment; the processed phase signal cannot be reliably mapped to a specific phase of the breathing cycle. In this work, we extend the capabilities of traditional bio-radar systems by introducing tracheal respiratory sound monitoring. By leveraging high-frequency acoustic features embedded in the radar signal, we resolve the inherent phase ambiguity, enabling precise identification of inhalation and exhalation phases. This unified approach, using a single millimeter-wave (mmWave) radar sensor, enables the extraction of multiple respiratory biomarkers—including breathing rate, motion pattern, breathing phase, and airflow dynamics. | | | | MTT-S News and Announcements | | Virtual Workshop for AI for Microwave Technologies | | |
The IEEE Microwave Theory and Technology (MTT) Society annually recognizes distinguished individuals or teams for their meritorious achievements and/or outstanding technical contributions in the field of microwave theory and technology.
The deadline for nominations for the 2027 MTT-Society Awards is July 31, 2026.
Nomination forms can be downloaded from the individual awards‘ descriptions presented at https://mtt.org/2027-mtts-awards-nominations/, where further general and specific information is given, and shall be submitted to mttawardschair@ieee.org.
Robert Weigel (r.weigel@ieee.org) is the MTT-S Awards Committee Chair and is with the Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany.
| | MTT-S Volunteer Spotlight | | |
IEEE Microwave Theory and Technology Society Student Ambassador Program: Region 9 Student Branches Regional Meeting,
Punta Del Este, Uruguay, 5–7 October 2025
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The IEEE Microwave Theory and Technology Society (MTT-S) was prominently represented at the 2025 IEEE Region 9 Student Branches Regional Meeting (SBRM 2025), held from 5 to 7 October 2025, at Hotel Enjoy in Punta del Este, Uruguay.
As an official sponsor of the event, MTT-S played a key role in supporting and strengthening student activities across the region. Through the coordinated efforts of the MTT-S leadership team, a well-structured and impactful participation was achieved throughout the meeting. This sponsorship and active engagement were essential in promoting MTT-S; fostering interaction with students and young professionals from Latin America; and encouraging the creation, growth, and long-term sustainability of MTT-S chapters throughout Region 9.
Read the the full article
| Do you have a friend or colleague who is doing great things as an MTT-S Volunteer? Nominate them to be featured in the e-newsletter volunteer spotlight! Click the button below: | |
| | Tunable C-Band Isolator Using Magnetized Gaseous Plasma | This study presents a compact, tunable nonreciprocal microwave isolator based on a magnetized gaseous plasma column integrated into a rectangular waveguide. The device operates in the C band and employs a partially metal-coated commercial low-pressure discharge lamp together with permanent magnets to provide axial magnetic bias. Experimental measurements demonstrate up to 10-dB isolation with approximately 2-dB insertion loss. The isolator exhibits tunability through plasma density, magnetic bias strength, and input microwave power, enabling dynamic control of the isolation band. The proposed approach offers a passive, reconfigurable alternative to conventional ferrite and time-modulated isolators and is well suited for high-power C-band microwave systems. | | | |
| | A LEO SATCOM TRX Front-End Using CMOS and D-Mode GaAs Processes With Current Reuse, Enabling All-Positive Biases | This work explores the use of current reuse in a heterogeneous TRX using a 65-nm CMOS technology and a 0.1μm D-mode GaAs technology to remove the need of negative biases and to exploit the benefits of current reuse, such as lower PDC dissipation, and to possibly simplify packaging. With this configuration, this TRX achieves competitive performance against other state-of-the-art works. The TX achieves measured S21 25.2 dB, max. PAE of 21.8%, and PSAT of 15.9 dBm at 20 GHz, while the RX achieves S21 of 12.5 dB and NF of 3.4 dB with PDC of 30 mW at 29 GHz. To the authors’ best knowledge, this is the first work using current reuse techniques across different technologies. | | | | |
The 2026 IEEE International MTT Symposia (IMS2026) will convene 7-12 June 2026 at the Thomas M. Menino Convention and Exhibition Center (MCEC) in Boston, bringing together the global RF and microwave community under a newly structured technical program designed to better address RF systems, as well as emerging RF applications, technologies, and techniques.
IMS has formally reorganized its technical content across three coordinated symposia, each focused on a distinct stage of RF and microwave development:
IEEE MTT-S RF Integrated Circuits (RFIC) Symposium: The premier forum dedicated to presenting the latest advances in RF, millimeter-wave, and THz integrated circuits and systems. RFIC 2026 continues to cover a broad spectrum of topics ranging from individual circuit blocks to fully integrated systems operating from sub-GHz to THz frequencies.
IEEE MTT-S RF Systems & Applications (RFSA) Symposium: RF system architectures focusing innovation on integrating components and subsystems to achieve application goals within constraints of available signal-processing techniques and digital processing hardware, including novel applications contexts in communication and sensing. RFSA 2026 will have a special emphasis on integrated sensing and communications (ISAC), a key part of 6G communications. As part of RFSA, there will be a new RF Systems Dialogue which, this year, will focus on ISAC. The format will include a session of invited talks as well as an evening panel session.
IEEE MTT-S RF Technology & Techniques (RFTT) Symposium: Advanced technology and techniques covering emerging RF and microwave research and development directions, and spanning RF passive components, packaging, active devices, discrete RF circuits, computer-aided design, and computational EM. RFTT 2026 will have a special emphasis on RF quantum technology.
The Advance Registration deadline is 5 June 2026, don't miss your chance to take advantage of the best rates available.
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The IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization (NEMO) is a premier annual event organized by the IEEE Microwave Theory and Technology Society (MTT-S).
NEMO serves as a leading international forum for presenting and discussing the latest advances in numerical methods, electromagnetic modeling, multiphysics simulation, and design optimization. It brings together scientists, engineers, and researchers from academia, research institutions, and industry to exchange ideas and foster innovation in the fields of RF, microwave, millimeter-wave, and terahertz technologies.
NEMO has established itself as a global hub for innovation in electromagnetic and multiphysics modeling, design, and optimization. The conference rotates annually between Europe, North America, and Asia, ensuring worldwide participation and collaboration across disciplines.
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Editor-in-Chief
Joel Arzola
Raytheon
Managing Editor
Amanda Scacchitti
The Albero Agency, Inc
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