IEEE MTT-S International Microwave Symposium Research Articles

IEEE MTT-S International Microwave Symposium 11-16 June 2023

IEEE MTT-S International Microwave Symposium 11-16 June 2023

Guest Editorial

This Special Issue of IEEE Transactions on Microwave Theory and Techniques (TMTT) is comprised of the extended papers from the 2022 IEEE Microwave Theory and Technology Society (IEEE MTT-S) International Microwave Symposium (IMS2022), held in Denver, CO, USA, in June 2022. The IEEE MTT-S International Microwave Symposium is the world’s major event on microwave technologies annually organized by the IEEE MTT-S as the society’s premier flagship conference. The conference represents a unique opportunity to bring together researchers and practitioners with diverse technical backgrounds to share the most recent advances in MHz-to-THz technologies and systems. After two years of the COVID-19 pandemic, IMS2022 came back to being an in-person-only event that was held on June 19–24, 2022, at the Colorado Convention Center, Denver.

Guest Editorial

Artificial intelligence (AI) and machine learning have experienced phenomenal success in the past decade in signal processing, image and speech recognition, robotics, autonomous systems, and more. This success is also coupled with the expanding applications of AI and machine learning in broad areas of science and engineering. The microwave community is among the earliest in exploring machine learning and artificial neural networks (ANN) for wireless and wireline electronic device, and circuit and system designs. Early works that appeared in the IEEE MTT-S International Microwave Symposium (IMS) are, for example, ANN for microstrip design (1993), ANN for microwave circuit analysis and optimization (1994), ANN for via interconnect (1996), and ANN for microwave computer-aided design (1996). The first time that IMS hosted a workshop on this topic (Applications of ANN for Microwave Design) was in IMS 1997, where the workshop was organized by Profs. K. C. Gupta and Michel Nakhla, and the invited speakers included R. L. Mahajan, K. C. Gupta, M. S. Nakhla, G. L. Creech, and Q. J. Zhang. Over the subsequent years, many researchers from around the world have contributed to the continuing development of ANN/machine learning techniques for microwave design. Several factors drove the development, one being the learning and generalization ability of ANN to learn computationally expensive microwave modeling/design problems offline, and to provide fast solutions to the problems during online design tasks. Another driving factor is the ability of ANN to learn microwave relationships directly from data even if analytical formulas for the targeted relationship are not available. From this angle, various ANN-based inverse modeling methods are developed, providing direct solutions to microwave design problems which otherwise would require expensive iterative process to solve. Further integrations between the microwave and machine learning disciplines led to knowledge-based approaches for modeling and design incorporating existing microwave-specific knowledges with the learning capabilities of ANNs, and technologies addressing cost of microwave data generation to perform effective machine learning for microwave applications.

Guest Editorial Introduction to the Special Section on the 2021 RFIC Symposium

This Special Issue of the IEEE Journal of Solid-State Circuits (JSSC) features a Special Section on key invited papers presented at the 2021 Radio Frequency Integrated Circuits Symposium (RFIC Symposium), held in hybrid mode on June 6–8 (in-person) and June 21–July 20, 2021 (online). The RFIC Symposium is the world’s premier conference focused on RF and millimeter-wave (mm-wave)-integrated circuits and systems technology. It shares the venue with the IEEE MTT-S International Microwave Symposium (IMS) as part of the Microwave Week and is co-sponsored by the IEEE Solid-State Circuits Society.

Guest Editorial

This Special Issue of IEEE Transactions on Microwave Theory and Techniques (TMTT) is comprised of the expanded papers from the 2021 IEEE Microwave Theory and Techniques Society (IEEE MTT-S) International Microwave Symposium (IMS2021), held in Atlanta, GA, USA, on June 2021. The IEEE MTT-S International Microwave Symposium is the world’s major event of microwave technologies annually organized by the IEEE MTT-S as the society’s premier flagship conference. The conference represents a unique opportunity to bring together researchers and practitioners with diverse technical backgrounds to share the most recent advances in MHz-to-THz technologies and systems. Due to the unprecedented pandemic situations, the IMS2021 was held in a hybrid format, comprised of in-person and virtual participation options. The in-person event was held on June 7–10, 2021, at the Georgia World Congress Center, Atlanta. A virtual event followed on June 20–25, 2021.

Introduction to the Special Section on the IEEE Radio Frequency Integrated Circuits (RFIC) Symposium

This Special Section of the IEEE JOURNAL OF SOLID-STATE CIRCUITS includes a selection of papers presented at the 2013 IEEE Radio Frequency Integrated Circuits (RFIC) Symposium, held June 2-4, 2013 in Seattle,WA, USA. The symposium is co-located with the IEEE MTT-S International Microwave Symposium (IMS). This annual meeting covers all aspects of RF and microwave circuits and systems. The 2013 RFIC Symposium received 202 submissions from across the world, covering a broad range of topics including transceiver SoCs and associated blocks such as power amplifier/tunable front-ends, frequency synthesis circuits, baseband circuits, and high-speed I/O circuits, as well as papers covering low-power/wireless sensor transceivers and mm-wave/THz circuits. This issue of the Journal presents four papers selected from a total of 103 presented at the Symposium. An overview of the technical articles is presented.

Guest Editorial [Mini special issue intro.

This Transactions' Mini-Special Issue includes four papers from the 2013 Radio Frequency Integrated Circuits (RFIC) Symposium, Seattle, WA, USA, June 2-4, 2013. The symposium is one of the IEEE Microwave Theory and Techniques Society (IEEE MTT-S) premier symposia and is co-located with the IEEE MTT-S International Microwave Symposium (IMS) each year. Out of 202 papers submitted, 103 papers were accepted (51% acceptance rate) for presentation in the conference and publication in the 2013 RFIC Symposium Digest. These papers have also been published online on IEEE Xplore. After the symposium, the conference chairs invited eight authors of papers presented at the symposium to submit expanded papers to this Transactions' Mini-Special Issue. A total of six papers were submitted, and the reviewers for every paper were selected from the RFIC Technical Program Committee and this Transactions' Editorial Board. After rigorous reviews, four papers were accepted for publication in this Mini-Special Issue. Each of the Mini-Special Issue papers is briefly described.

Publishing at IMS?Part III: How to Get Your Paper Published at IMS

In Part II of this series, I went over how to make life easy for the IEEE MTT-S International Microwave Symposium (IMS) reviewer so that we can increase the chances of getting a paper accepted. It is important to devote conscious effort into making it easy for the reviewer to give high scores in the originality, clarity, quantitative, and interest categories. In this part, I concentrate on what I feel is the most important category, quantitative. Note that all four categories are formally assigned equal weights when assigning scores, and other reviewers might have different opinions, so this represents only my personal views on the matter.

DR OMUX for Satellite Communications: A Complete Step-by-Step Design Procedure for the C-Band Dielectric Resonator Output Multiplexer

Although the behavior of dielectric materials has been known since 1939 when R.D. Richtmyer showed that unmetalized dielectrics can operate as microwave resonators [1], it was only in the 1970s when real breakthroughs occurred in ceramic technology, and low loss and temperature stable ceramics were developed. In 1975 the first practical dielectric resonator (DR) loaded microwave filter was reported at the IEEE MTT-S International Microwave Symposium [2]. Significant advancements in ceramic technology and the progress in satellite and mobile communications in the 1990s revived interest in DR applications for a wide variety of microwave components. A number of new materials such as zirconium-tin titanate, ZST ((Zr ? Sn)TiO4), barium zinc tantalate, BZT (Ba(Zn,Ta)O3), and barium magnesium tantalate, BMT (Ba(Mg,Ta)O3), with high-dielectric constant, high-quality factor and low-temperature coefficient were developed [3]. These new materials, along with the application of rigorous full-wave modeling and analysis methods, fueled the development of new DR filter configurations such as single and dual mode filters with elliptic transfer function. Today, DR filters and output multiplexers (OMUXs) are widely used in satellite communications because of their superior characteristics, such as smaller size, better temperature stability, and higher unloaded Q compared to conventional cavity-based OMUXs. A number of papers have been published on DR filters and OMUXs [4]?[6], [8], [9], but no comprehensive paper on the design of a DR-based OMUX has been reported. The large interchannel interaction (due to contiguity of channel filter frequencies, performance of one channel filter is effected by the presence of other channel filters), wide spurious free frequency band, and stringent in-band and out-of-band (OOB) specifications (such as large near band and far band rejections, small passband group delay and flatness), along with the requirement of high Q, low frequency drift with temperature, and high power handling capability, make the design of DR OMUXs extremely challenging. This article presents a practical approach to the design of C-band high power OMUXs based on single mode DR filters for space application (Figures 1 and 2), making extensive use of present day simulation capabilities. All the major steps involved in the design of a DR OMUX such as the concept of a singly terminated filter, conversion of doubly terminated filters to singly terminated filters using a series L-C circuit, modeling of the DR OMUX in a circuit simulator incorporating full wave effects, and the OMUX optimization sequence are explained in detail. A successful design of the DR filter is crucial to the eventual design of the DR OMUX.

Publishing at IMS - Part I: How to get your paper published at IMS

In Part II of this series, I went over how to make life easy for the IEEE MTT-S International Microwave Symposium (IMS) reviewer so that we can increase the chances of getting a paper accepted. It is important to devote conscious effort into making it easy for the reviewer to give high scores in the originality, clarity, quantitative, and interest categories. In this part, I concentrate on what I feel is the most important category, quantitative. Note that all four categories are formally assigned equal weights when assigning scores, and other reviewers might have different opinions, so this represents only my personal views on the matter.

Development of Multiharmonic Verification Artifact for the LSNA and NVNA (MTT-11)

In this article, a unique approach is presented to design and fabricate a circuit, rich in nonlinear contents with reduced sensitivity to bias, temperature, and load variations so that it can be used to validate the performance of LSNAs or NVNAs. This circuit was judged to be a joint winner in the 2012 IEEE MTT-S International Microwave Symposium (IMS2012) Student Design Competition, Design of a Calibration Verification Artifact for Nonlinear VNA, sponsored by MTT-11 Microwave Measurements.

Packaged Tunable Bandpass Filters Based on Varactor-Loaded Spiral Combline Topology

This article describes the winning work at the student packaged broadband tunable bandpass filters design competition at the 2012 IEEE MTT-S International Microwave Symposium (IMS2012), Montreal, Canada. According to the competition design rules, the broadband tunable bandpass filter circuitry must be planar on a printed circuit board and securely mounted in the metal package with a copper tape lid. The lumped surface-mount components, including resistors, capacitors, and varactors, are allowed and must be tightly mounted on the printed circuit board. The evaluation board will be an unenclosed printed circuit board with 50-X traces connecting the RF ports of the package to the standard 50-X female subminiature version A (SMA) connectors. The filter performance was evaluated based on the measurement performance between the SMA connectors. Figure 1 illustrates the evaluation criteria of tunable bandpass filters. During the in-situ competition evaluation, the voltage range limited between 0 and 20 V was provided for the designers to realize two passbands. The first band specifications are: 1) the passband 965-1035 MHz, 2) the passband insertion loss less than 4.5 dB, 3) the passband return loss more than 15 dB, an 4) the insertion loss for the frequency lower than bandpass filter architecture was designed, which employed the varactor-loaded spiral combline resonator topology with stepped-impedance coupled lines at the input and output ports. The design considerations and measurement results are described.

Biomedical Applications: Taking Stock [Microwave Surfing

If you attended the recent IEEE MTT-S International Microwave Symposium 5–10 June 2011 in Baltimore, Maryland, or the IEEE International Symposium on Antennas and Propagation and United States National Committee for the International Union of Radio Science (USNC/URSI) Meeting 3–8 July 2011 in Spokane, Washington, you probably noticed that the RF/microwave research community remains seriously engaged in the pursuit of biomedical applications of this part of the electromagnetic spectrum. Such annual events, highlighting the beneficial aspects of the nonionizing electromagnetic waves, clearly remind us of how far we have come in exploring applications that transcend the traditional defense-based boundaries of this engineering field. At the same time, they also serve as a useful counterpoint to the periodic media reports on the putative dangers of nonionizing electromagnetic radiation.

IMS2011 General Chair's Message

It is my honor and privilege to represent the Steering Committee in welcoming you to Baltimore, Maryland’s beautiful Inner Harbor for the 2011 IEEE MTT-S International Microwave Symposium (IMS2011). The theme for IMS2011 is Microwaves for the World with emphasis on world experts showcasing how our technology and profession has shown to be benefi cial around the globe. Since Baltimore last hosted the IMS in 1998, the beautiful Baltimore Inner Harbor area revitalization has continued. With the Convention Center centrally located in the Inner Harbor area, attendees are assured of quick and easy pedestrian access to a multitude of restaurants, attractions, and official IMS2011 hotels. In addition to Microwave Week’s technical programs and exhibition, the main IMS events will be Monday evening’s Welcome Reception, Wednesday evening’s Awards Banquet, and Thursday evening’s Crab Feast. The Crab Feast makes IMS in Baltimore unique and should not be missed; however, space is limited, so buy your tickets early.

Guest Editorial

The fifty-five articles in this special issue are expanded papers from the 2009 IEEE MTT-S International Microwave Symposium (IMS) that was held 7-12 June 2009, in Boston, MA.

2006 IEEE MTT-S International Microwave Symposium and Exhibition

2006 IEEE MTT-S International Microwave Symposium and Exhibition

1986 IEEE MTT-S International Microwave Symposium Keynote Address (Dec. 1986 [T-MTT

1986 IEEE MTT-S International Microwave Symposium Keynote Address (Dec. 1986 [T-MTT

Foreword (Dec. 1985 [T-MTT

The 1985 IEEE Microwave and Millimeter-Wave Monolithics Symposium was held on June 3 and 4, 1985 in St. Louis, MO, in conjunction with the IEEE MTT-S International Microwave Symposium. A total of 686 attended. This the fourth Microwave and Millimeter Wave Monolithic Circuits Symposium continued to enjoy a high level of interest from the technical community. This was reflected in the quality of submissions to the Technical Program Committee and the high attendance for all the Symposium sessions. The Technical Program Committee worked diligently to carefully review the papers submitted and provided a quality program.

The 1982 IEEE MTT-S International Microwave Symposium (Dec. 1982 Transactions)

The 1982 International Microwave Symposium, associated workshops, one day symposium on Microwave and Millimeter-Wave Monolithic Circuits, and exhibition were held at the Hyatt Regency Hotel, Dallas, TX, during the week of June 13 through June 19, 1982. As has been the case during the past few years, the symposium and related events were well attended. Officially, 1267 people registered for the symposium with an additional 51 people registering for the workshops only. The one day symposium on Microwave and Millimeter-Wave Monolithic Circuits drew 447 registrants, all but 30 of whom also registered for the International Microwave Symposium. Workshops registration was 257. Exhibitors and exhibits only registration totaled 2105. Including exhibitors, it was estimated that approximately 3300 Microwave people were at the Hyatt Regency during the week.

Editors' Overview (Dec. 1982 Transactions)

This issue includes a sampling of papers presented at the 1982 IEEE MTT-S International Microwave Symposium. These papers are expanded versions of the Symposium presentations, published to provide substantially more information than originally appeared in the Symposium Digest. In this issue we have provided a listing of all the papers presented at the Symposium by publishing the Table of Contents from the Symposium Digest. Also included are articles highlighting the 1982 International Microwave Symposium and recognizing the winners of the 1981 Microwave Theory and Techniques Society Awards.