New for 2025! MTT-S Volunteer Spotlight | |
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Chenhao Chu
Postdoctoral Scholar at ETH Zurich
MTT-S EICO Vice Chair and Webmaster
How many years have you been an MTT-S member?
I became an MTT-S member in 2018 when I joined IEEE as a student member. It’s hard to believe that six years have already passed!
How did you start volunteering with MTT-S?
I began my volunteer work as a reviewer for MTT-S publications such as T MTT, MWTL, and Microwave Magazine. Later, I joined the MTT-S Electronic Information Committee, where I help manage the society’s website with news, conferences, and webinar updates. I’ve also served as a Technical Program Committee member for conferences like IMS and RWW.
What has been your favorite volunteer activity in MTT-S?
My favorite activity is participating in the high-efficiency power amplifier student design competition (HEPA-SDC) and the Three-Minute Thesis (3MT®) competition at IMS every year. I also love IMS because it’s a fantastic event to meet excellent researchers and have interesting discussions beyond just technical topics.
What advice would you give to someone who is interested in becoming a volunteer with MTT-S?
I encourage anyone interested to join MTT-S. There are many opportunities for student members and young professionals. Check out the details on pages such as MTT-S LinkedIn page, the MTT-S Students & IMS and Young Professionals in Microwaves pages. Don’t hesitate to get involved!
| 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: | |
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Automated Neural-Network-Based Model Generation Algorithms for Microwave Applications | Automated Model Generation (AMG) algorithms are an important technique for creating Artificial Neural Network (ANN) models. The assessments of the ANN training phenomena related to under-learning, over-learning and good-learning are automated and the quantitative links between the accuracy of the ANN model, the amount/distribution of training/testing data, and the size of the neural network are established. In this way, the AMG algorithm automatically creates an ANN model with user-desired accuracy, significantly reducing the human time required for modeling. | | | |
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Solving Strongly Nonlinear Inverse Scattering Problems for Mixture of Dielectric and PEC With Novel Contraction T-Matrix Equation | The classical inverse scattering methods have been developed to reformulate the Lippmann–Schwinger integral equation (LS-IE) for mitigating the nonlinearity, such as the new integral equation (NIE). However, LS-IE-based inversion algorithms may fail in scenarios involving mixtures of highly lossy dielectric and perfect electric conductor (PEC) scatterers. To overcome these challenges, in this article, a novel contraction T-matrix equation (CT-ME) with a control factor is proposed to model strongly nonlinear inverse scattering problems. | | | |
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Cross-Coupling Matrix Reconfiguration Using the Levenberg–Marquardt Algorithm on Orthogonal Groups | This letter introduces a Levenberg–Marquardt (LM) algorithm on the orthogonal group to reconfigure the coupling matrix (CM) for cross-coupled resonator filters of general topology. By leveraging the framework of Lie groups and the exponential map, the authors perform LM steps locally in the linear space of skew-symmetric matrices, the Lie algebra associated with the orthogonal group. | | | |
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A Novel FDTD-PIC Scheme for Accurate Transient Analysis of Terahertz Gyrotrons | Rigorous time-domain simulation is crucial for developing terahertz gyrotrons. Traditional dedicated codes typically utilize the gyro-averaged method to address fast time-scale behaviors. However, this approach may lead to misinterpretation when analyzing transient processes involving modes with different response properties and multi-scale behaviors, such as harmonic and gyro-BWO operations. To address this challenge, this paper directly analyzes the dynamic behavior of various modes based on fast-varying field variables without any time-scale assumption. | | | |
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Unconditionally Stable Explicit Time-Domain Transmission-Line Matrix Method | This article presents the mathematical model of the unconditionally stable explicit transmission-line matrix (USE-TLM) method, which can operate at a time step beyond the Courant–Friedrichs–Lewy (CFL) limit. This technique is based on the eigenmode decomposition of the system matrix that represents the computational domain. Then, by eliminating all unstable modes, the system size is reduced and is usually much simpler to manipulate in terms of computational resources. | | | |
2025 Radio and Wireless Week (RWW) Recap | |
It is my great pleasure to reflect on the success of the 2025 IEEE Radio & Wireless Week (RWW), held from January 19-22 in the vibrant city of San Juan, Puerto Rico. This year's conference was an exceptional gathering of researchers, industry professionals, and students from around the world, all dedicated to advancing the field of radio and wireless technology.
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Technical Sessions & Keynotes: RWW 2025 featured a diverse range of technical sessions covering cutting-edge advancements in wireless communication, 5G/6G networks, millimeter-wave technologies, RF circuits, and beyond. Our distinguished keynote speakers provided valuable insights into emerging trends and challenges shaping the future of wireless systems.
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Workshops & Panel Discussions: Engaging workshops and interactive panel discussions facilitated in-depth conversations on power amplifiers, packaging and heterogeneous integration solutions for mm-wave and sub-THz applications, and radio communication and sensing for public authorities. These sessions fostered collaboration and knowledge exchange among academia, industry, and government representatives. The Women in Microwaves and Young Professionals panels on Sunday evening and the MTT Space Night on Tuesday were very well attended and profited from lively discussions.
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Industry Involvement & Exhibitions: The industry track and exhibition hall showcased the latest innovations from leading companies and startups. Attendees had the opportunity to interact with industry leaders and explore groundbreaking technologies that are transforming the wireless ecosystem.
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Student & Young Professional Engagement: RWW 2025 continued its strong commitment to fostering the next generation of engineers and researchers. The student paper competition and networking events provided an excellent platform for students to present their research, connect with peers, and gain valuable career insights. Congratulations to the winners!
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Networking & Social Events: Beyond the technical program, attendees enjoyed the beautiful setting of San Juan with memorable networking events and cultural experiences.
I would like to express my heartfelt gratitude to the organizing committee, technical program chairs, speakers, reviewers, sponsors, and volunteers who made this conference a resounding success. Your hard work and dedication are what make RWW a premier event in the wireless community.
As we look ahead, we are excited to continue pushing the boundaries of wireless technology and innovation. Thank you for being a part of RWW 2025, and I look forward to seeing you all at RWW 2026!
Best regards,
Holger Maune, Conference Chair, RWW 2025
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With the release of our special issue on “Microwaves in Climate Change” we are hoping to inform and interest a whole new group of engineers and scientists in the applications and technologies that help bridge the research and measurements being conducted to track and understand climate change, monitor atmospheric chemistry and evolution, develop alternative energy sources, help with waste conversion and alternative fuel generation, and provide resources for electrification, transportation, energy harvesting, efficient heating, power beaming, and nearly every sector of the society relying on communications.
Our special issue contains 16 great paper contributions and an Introduction that gives our goals and special reasons for releasing this issue on the most important global issue of our time. The papers span a very wide swath of topics from ozone monitoring, power beaming, and energy harvesting, to bird migration and agricultural emissions monitoring. These articles come both from traditional EE communities and a range of geoscientists and physicists.
We will also be distributing – free of charge – print copies of the entire issue. Please sign up through our IEEE Journal of Microwaves web page in early March if you want a copy mailed to you.
In the meantime, if you think you might have future article ideas on this particular topic be sure to contact Peter Siegel, JMW Editor-in-Chief (phs@caltech.edu) to discuss a contribution.
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2025 IEEE Wireless and Microwave Technology Conference (WAMICON)
Join Us at WAMICON 2025!
The WAMICON 2025 Organizing Committee cordially invites you to join us for an exciting and immersive conference experience from April 14-15, 2025, in sunny Cocoa Beach, FL!
Why Attend WAMICON?
WAMICON is more than just a conference—it’s a dynamic and welcoming community! Here is what makes WAMICON so special:
- #WAMImagic – Experience the unique energy that keeps attendees coming back year after year!
- #WAMIfamily – Connect with a tight-knit professional network where meaningful relationships matter just as much as the technical content!
- #WAMIjammy – Engage in insightful discussions and our premier networking session—complete with an open bar!
- #WAMItechtalks – Dive into cutting-edge presentations on the latest wireless and microwave innovations!
- #SpeechesOnBeaches – Enjoy world-class technical conversations by morning and a stunning beachside atmosphere by evening!
View the WAMICON promotional video
What to Expect?
At WAMICON 2025, immerse yourself in groundbreaking advancements in the wireless and microwave industries through:
- A strong technical program featuring ~60 presentations, with awards for the Best Overall Conference Paper and the Best Student Paper.
- Student research poster competition with an award for the Best Student Research Poster.
- Inspiring keynote and plenary speakers from industry, government, and academia.
- Engaging invited talks from leading experts in the field.
Save the Date & Join Us!
Don't miss this opportunity to advance your knowledge, grow your network, and enjoy the best of Cocoa Beach.
Dr. Michael Grady
WAMICON 2025 General Chair
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The 2025 IEEE International Microwave Biomedical Conference (IMBioC 2025) is scheduled to take place from April 15-17, 2025, at the Kaohsiung Exhibition Center in Kaohsiung, Taiwan. This event provides a global platform for sharing innovations and developments in RF and microwave technology, antennas, and electromagnetic theory, specifically applied to biomedical systems. Continuing the legacy of previous IEEE MTT-S biomedical-focused conferences, IMBioC 2025 aims to bridge the gap between science and engineering. The conference will host both invited and contributed papers, with prominent researchers delivering keynote speeches to highlight recent technological trends and breakthroughs in relevant areas. Contributed papers are solicited for the topics as listed below. |
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IEEE MTT-S International Wireless Symposium (IEEE IWS 2025) will be held from May 19 to May 22, 2025 in Xi’an, China, as a part of 2025 China Microwave Week (CMW 2025). IWS is held annually in China to provide an international forum for presentation and exchange of the latest technical achievements in RF, microwave and millimeter-wave components, circuits and systems related to the physical layer aspects of existing and emerging wireless systems and applications. The conference is the ideal event to keep up to date with the latest achievements in this field to interact with international experts from industry and academia. IWS 2025 is organized by IEEE MTT-S, co-organized by Xidian University and IEEE Xi’an Section MTT-Chapter. It will feature parallel Session Tracks, Workshops, Student Paper Competitions, FLASH Competition, Women in Microwaves and Wireless, Young Professionals, Education Panel Sessions. | | |
The Texas Symposium on Wireless and Microwave Circuits and Systems conference will be held on April 8-9, 2025, at the Baylor Research and Innovation Collaborative (BRIC) building on the campus of Baylor University in Waco, TX. This year's conference will feature invited talks from key contributors to the RF and microwave fields, exhibitors from local industry, and engaging student events, including a student research/poster competition and Young Professionals panel. | |
Editor-in-Chief
Dr. Hjalti Sigmarsson
University of Oklahoma, USA
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