| | Terahertz Imaging for Everyone: Uncooled CMOS Direct Detectors for Scalable Sensing | Recent advances in high-performance CMOS-based THz direct detectors enable monolithic integration of detector front ends, signal processing, and readout electronics for room-temperature real-time imaging and focal-plane arrays. A comprehensive cross-layer analysis of device-level nonlinearities, antenna-transistor codesign, impedance matching, noise mitigation and pixel-level readout circuitry is presented for high-sensitivity (sub-)THz imaging applications, particularly for concealed object detection and biosensors. Insights from this analysis enable broadband nonresonant THz detection beyond the transistor ƒT. Embedded amplification and innovative high-Q filtering architectures facilitate better than 500fps video-rate imaging with subnanowatt noise floors. | | | |
| | Best Practices for Simulating Ground Planes in RF Integrated Circuit Design | This work analyzes different methods of simplifying and simulating the ground plane for RF integrated circuits. Omitting the ground plane is shown to be inaccurate due to neglected ground plane inductance. An improved version of this method is proposed in which the inductance is estimated from simple distance measurements. Various methods of simplifying complex patterned ground planes into forms amenable to electromagnetic (EM) simulation are evaluated and shown to achieve high accuracy. A ground plane structure is presented which is easily simulated. Finally, the described techniques are applied to a 10 GHz power amplifier design. A hybrid technique is proposed in which the inductances are estimated during initial design iterations and full EM simulation of the ground plane is used for final tuning. | | | | MTT-S News and Announcements | | Become an MTT-S Outstanding YP Lecturer! | | |
Celebrate 75 Years of IEEE MTT-S!
Join MTT-S for the first time for FREE!
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As the IEEE Microwave Theory and Technology Society (MTT-S) celebrates its 75th Anniversary in 2027, we are pleased to offer a special opportunity to welcome new members to our global community.
For a limited time, active IEEE members joining MTT-S for the first time can have their MTT-S Essential Membership fee waived.*
Simply add MTT-S Essential Membership to your IEEE membership and enter the promotional code MTTS75YEARS in the promotion-code field on the IEEE cart page.
For 75 years, MTT-S has brought together professionals, researchers, students, and industry leaders advancing microwave, millimeter-wave, terahertz, and related technologies. Today, our community connects more than 18,000 members worldwide.
Whether you are working in academia, industry, or just beginning your career, this is a great time to become part of the MTT-S community.
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| | MTT-S Volunteer Spotlight | | Congratulations to the IEEE MTT-S Newly Elected Adcom Members! | | |
IEEE Microwave Theory and Technology Society (MTT-S) congratulates the newly elected Administrative Committee (AdCom) members for the 2027–2029 term, representing both the At-Large Election and the Internal AdCom Election.
Learn More About the Newly Elected MTT-S Adcom Members
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IEEE Antenna & Microwave Tech Day:
A Global Celebration of Antenna, Microwave and Propagation Technologies
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On 13 May 2026, the global IEEE Antennas and Propagation Society (AP-S) and IEEE Microwave Theory and Technology Society (MTT-S) community came together to celebrate the inaugural IEEE Antenna & Microwave Tech Day, marking the launch of a new worldwide initiative dedicated to increasing awareness of microwave, antenna, and propagation technologies and their impact on society. The celebration brought together IEEE Chapters, student branches, young professionals, researchers, educators, industry experts, and technology enthusiasts from across the globe, creating a vibrant platform for outreach, education, innovation, and collaboration. The date of 13 May was carefully chosen to commemorate one of the most significant milestones in the history of wireless communications: Guglielmo Marconi’s famous 1897 wireless transmission over open sea, during which he sent the message, “Are you ready?” This historic achievement demonstrated the potential of wireless communications and laid the foundation for the technologies that connect our world today.
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| | A D-Band Four-Way Power-Combined Common-Gate Power Amplifier Achieving 0.1 W PSAT in 45 nm RFSOI Technology | This work presents a high-power 137–155 GHz four-way power-combined common-gate (CG) power amplifier (PA) using advanced RF n-type FETs (ADNFETs) developed by GlobalFoundries. The proposed design uses cascaded CG stages to leverage their superior linearity and generate higher output power than common-source (CS) PAs, while ADNFETs enable operation at a high supply voltage and increase the per-stage gain of the CG amplifier. Fabricated in 45RFE, an RF-optimized 45-nm RFSOI technology, the prototype IC achieves a measured PSAT of 20.5 dBm, an output 1-dB compression point (OP1dB) of 17.4 dBm, and a peak power-added efficiency (PAE) of 11.4% at 137.5 GHz with a 1.35 V supply. Across 127–148 GHz, the PA maintains a PSAT > 19 dBm, an OP1dB > 15 dBm, and a peak PAE > 8%. | | | |
| | Reconfigurable Coaxial Resonator Filters Using Elliptically Shaped Resonators | This article demonstrates a concept of a reconfigurable filter with elliptically shaped coaxial resonators. In contrast to other filter realizations and structures, this concept allows the change of coupling factor and resonance frequency on the same element. Both mechanisms can be controlled independently of one another, and their interdependencies remain minimal at all times. As a result, only N tunable elements, controlled by 2N motors, are required inside the filter structure, leading to a compact design while maintaining a high quality factor. To demonstrate the use of the elliptically shaped resonators, an inline and a quadruplet configuration are presented, with both of them operating at center frequencies ranging from 2.2 to 2.7 GHz with a bandwidth ranging from 30 to 50 MHz. This leads to a frequency tunability of 20.4% and a bandwidth tunability of 40%. | | | | |
The 2026 Asia-Pacific Microwave Conference (APMC 2026), held in Fukuoka, Japan, the vibrant gateway city of Kyushu—long recognized as Japan’s historical gateway to Asia and the world. Situated at the western edge of Japan, Kyushu has for centuries served as a vital interface between Japan and the Asian continent. This role extended naturally into the modern era of communications. In the early 20th century, international wireless communication infrastructure was established in this region, including overseas radio links centered around Nagasaki, such as the Nagasaki Wireless Telegraph Station, which played a key role in connecting Japan with the rest of the world. In parallel, military communication facilities, including those in Sasebo, contributed to the advancement of long-distance wireless technologies and operational RF systems. As the host city of APMC 2026, Fukuoka serves as a major economic and technological hub in Kyushu, with strong connections to Asia and a dynamic environment that fosters innovation and international collaboration.
Following these developments, Kyushu and its surrounding regions have continued to contribute to advanced communication and space technologies. The Uchinoura Space Center has supported scientific satellite missions and deep-space exploration, where microwave and RF technologies are essential for telemetry, tracking, and control. In addition, the Tanegashima Space Center has served as Japan’s primary launch site for large-scale rockets and satellite deployments, playing a crucial role in space-based communication infrastructure. Together, these facilities illustrate the continuous evolution of microwave technologies from terrestrial communication to space systems. In parallel, Kyushu has developed into one of Japan’s leading semiconductor regions, often referred to as “Silicon Island.” The region hosts a concentration of semiconductor manufacturing and device development activities, forming a robust industrial ecosystem that supports high-frequency and high-performance electronics. This foundation has been instrumental in advancing microwave and millimeter-wave technologies, particularly in the development of compound semiconductor devices and integrated circuits.
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Editor-in-Chief
Joel Arzola
Raytheon
Managing Editor
Amanda Scacchitti
The Albero Agency, Inc
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