2024 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (2024 iWEM)

*Keynote Speakers*

**Prof. Hiroyuki Arai**
Yokohama National University, Japan
**Title : Mobile Base Station Antennas, Past, Present and Future**

Hiroyuki Arai received the B.E. degree in Electrical and Electronic Engineering, M.E. and D.E.in Physical Electronics from Tokyo Institute of Technology in 1982, 1984 and 1987, respectively. After research associate in Tokyo Institute of technology, he joined Yokohama National University as lecturer in 1989. Now he is professor in Department of Electrical and Computer Engineering, Yokohama National University. He investigated microwave passive components for high power handling applications such as RF plasma heating in large Tokamaks. He developed a flat diversity vehicular mounted antenna, a polarization diversity base station antenna for cellular systems, small base station antennas of indoor micro cellular system, and a lot of antenna systems for wireless applications. He received the Young Engineers Award from the IEICE of Japan in 1989, and the "Meritorious Award on Radio" by the Association of Radio Industries and Businesses in 1997, 2006, 2011, 2022, respectively. He was editor-in-chief of IEICE Trans. on Communications, 2005 -2007, and was chair of IEEE AP-S Japan Chapter, 2009 - 2010. He was associate editor of IEEE Transactions on Antennas and Propagation, 2011-2013, and the chair of Technical Group on Antennas and Propagation of IEICE, 2013-2014, and the general chair of ISAP 2020, Osaka. He is Fellow of IEEE and IEICE.



This talk presents the changes of the base station (BS) antennas used in mobile communication system, especially for cellular systems. Beam tilt and diversity, fundamental schemes of BS, have been introduced to enhance the channel capacity and to mitigate the fading effects. The following topics are multi-sector, spot beam and vertical sectorization to upgrade communication performance. Recent 5G system has launched beam forming antenna and the use of millimeter band to achieve very fast data transmission. The future systems will use higher frequency bands such as Tera-Hertz and optical region. We present many examples of BS antenna used in systems and discussed the issues of the future antenna systems.

**Prof. Dau-Chyrh Chang**
Asia Eastern University of Science and Technology, Taiwan
**Title : A Brand New TCATR for 5G and LEO Satellites OTA Measurement**

Prof. Dau-Chyrh Chang, IEEE Life Fellow, is an accomplished figure in the field of electrical engineering, particularly in antenna research and communication engineering. He holds a BS degree and an MS degree from Chung-Cheng Institute of Technology, as well as a Ph.D. degree in Electrical Engineering from the University of Southern California.

For a substantial part of his career, he dedicated 25 years to antenna research and development at CSIST, where he served as the director of the antenna section for 17 years. During this time, he contributed significantly to the development of various types of antennas, including reflector antennas, phased array antennas, slot array antennas, and communication antennas. Additionally, he worked on creating different antenna test ranges.

In 1998, Prof. Chang moved from his director position to become the Dean of the Engineering School at Da-Yeh University (DYU). Later, he was invited to be the Dean of the College of Electrical and Communication Engineering at Asia Eastern University of Science and Technology (formerly known as Oriental Institute of Technology) in 2006. During his tenure there, he established several research laboratories focusing on hybrid antennas, near field antenna test range, communication measurement systems, electromagnetic compatibility (EMC), and electromagnetic simulation.

Apart from his antenna research, Prof. Chang has shown interest in Signal Integrity (SI) research, with funding support from various industries. In August 2016, he transitioned from academia to industry and has since been working as a consultant for several companies.

Throughout his career, Prof. Chang has been a prolific author, publishing over 400 papers in journals and conferences. He also holds an impressive portfolio of 35 patents. In addition to his research contributions, he has actively engaged in the IEEE community, founding and leading several chapters and organizations, such as the IEEE AP-S Taipei Chapter and IEEE MTT-S Taipei Chapter. He has also served as the President of the Chinese Microwave Association.

Prof. Chang's expertise and leadership have earned him numerous awards and honors. He has been recognized for his research excellence at CSIST, DYU, and AEUST. In 2022, he was honored with the prestigious IEEE Life Achievement Award.



As 5G technology and Low Earth Orbit (LEO) satellites revolutionize wireless communication, the need for accurate, fast, and comprehensive OTA (Over-The-Air) testing becomes crucial. In this talk, we will discuss various traditional OTA systems such as DFF (Direct Far Field Range), NFF (Near Field Range), and CATR (Compact Antenna Test Range). Apart from the traditional OTA systems, a brand new TCATR (Toroidal CATR) will also be discussed. The reflector of TCATR is designed as a continuous torus which minimizes field ripple inside the QZ. Multiple feeds locate inside another anechoic chamber. The ripples inside QZ due to the edge diffraction and feed spillover is almost neglected. This good QZ performance enhances the accuracy and repeatability of measurement. The TCATR will also reduce OTA measurement time with multiple plane waves.

**Mr. Su-Wei Chang**
TMY Technology Inc. (TMYTEK)
**Topic : Challenges and recent developments of mm-Wave Technologies**

Mr. Su-Wei Chang received the B.S. degree in EE from the Feng-Chia University in 2005. He then worked in Academia Sinica Institute of Astronomy & Astrophysics (ASIAA) as a mmWave receiver engineer, where he was involved in developing the mmWave and sub-mmWave receiver systems for radio telescopes. While working in ASIAA, he was leading and developing the 200-600 GHz receiver for Sub-Millimeter Array (SMA) and has been invited to Harvard-Smithsonian Center for Astrophysics. Later on, he received a master's degree and is a Ph.D. candidate in the ECE at UMass-Amherst. His research interests include low noise, cryogenic circuits design, and applications, silicon-based MMIC up to mm-wave bands. He founded TMYTEK in 2014 and is currently the president. Recently, Su-Wei received the Young Scholars‘ Creativity Award of Pan Wen Yuan Foundation. He published 48 papers in SCI international journals, which were cited 694 times. H index 15, i10 index 20.

Founder and President, Su-Wei Chang is a Ph.D. candidate at the University of Massachusetts, Amherst, with expertise in millimeter-wave and submillimeter-wave front-end RF systems, millimeter-wave circuit (MMIC) design, and ultra-low temperature electronic circuit design. He published 48 papers in SCI international journals, which were cited 694 times. H index 15, i10 index 20.



We are experiencing today rapid changes in information due to new technologies such as the metaverse, quantum computers, 5G, LEO, and autonomous vehicles. mmWave technology is the key infrastructure that will be the most critical in the present and the future to support those applications and turn them into a reality. Although the available bandwidth of mmWave frequencies is promising, the propagation characteristics are significantly different from microwave frequency bands in terms of path loss. TMYTEK provides millimeter-wave advances in 5G/B5G and satellite communication applications. Design, materials, manufacturing, and testing are all covered by this one-stop shop solution. By revolutionizing the mmWave RF front-end with novel devices, designing ready-to-use beamformers and redesigning the OTA testing approach, TMYTEK enables industrial inventions to reach the market faster.

The Phased Array Antenna design capabilities support SATCOM, 5G/B5G, and radar sensing that covers different GHz frequencies, and antenna elements from small scale to large matrix. It offers well-balanced high EIRP performances, thermal and compact size in one solid tile-based design. Contributed by the deep-dive ecosystem collaboration, TMYTEK’s design is the only choice for the best cost-effective and time-efficient solution for essential performance.

▲TOP

Important Dates

Manuscript submission deadline
~~April 10, 2024~~
~~May 1, 2024~~
May 27, 2024

Notification of Acceptance/author registration
~~May 13, 2024~~
May 29, 2024

Final paper submission deadline
~~May 31, 2024~~
June 7, 2024

Early bird registration deadline
June 7, 2024

Registration deadline
June 28, 2024

Conference date
July 10-12, 2024

Organizers

Supported by


	Prof. Hiroyuki Arai Yokohama National University, Japan Title : Mobile Base Station Antennas, Past, Present and Future
	Hiroyuki Arai received the B.E. degree in Electrical and Electronic Engineering, M.E. and D.E.in Physical Electronics from Tokyo Institute of Technology in 1982, 1984 and 1987, respectively. After research associate in Tokyo Institute of technology, he joined Yokohama National University as lecturer in 1989. Now he is professor in Department of Electrical and Computer Engineering, Yokohama National University. He investigated microwave passive components for high power handling applications such as RF plasma heating in large Tokamaks. He developed a flat diversity vehicular mounted antenna, a polarization diversity base station antenna for cellular systems, small base station antennas of indoor micro cellular system, and a lot of antenna systems for wireless applications. He received the Young Engineers Award from the IEICE of Japan in 1989, and the "Meritorious Award on Radio" by the Association of Radio Industries and Businesses in 1997, 2006, 2011, 2022, respectively. He was editor-in-chief of IEICE Trans. on Communications, 2005 -2007, and was chair of IEEE AP-S Japan Chapter, 2009 - 2010. He was associate editor of IEEE Transactions on Antennas and Propagation, 2011-2013, and the chair of Technical Group on Antennas and Propagation of IEICE, 2013-2014, and the general chair of ISAP 2020, Osaka. He is Fellow of IEEE and IEICE. This talk presents the changes of the base station (BS) antennas used in mobile communication system, especially for cellular systems. Beam tilt and diversity, fundamental schemes of BS, have been introduced to enhance the channel capacity and to mitigate the fading effects. The following topics are multi-sector, spot beam and vertical sectorization to upgrade communication performance. Recent 5G system has launched beam forming antenna and the use of millimeter band to achieve very fast data transmission. The future systems will use higher frequency bands such as Tera-Hertz and optical region. We present many examples of BS antenna used in systems and discussed the issues of the future antenna systems.


	Prof. Dau-Chyrh Chang Asia Eastern University of Science and Technology, Taiwan Title : A Brand New TCATR for 5G and LEO Satellites OTA Measurement
	Prof. Dau-Chyrh Chang, IEEE Life Fellow, is an accomplished figure in the field of electrical engineering, particularly in antenna research and communication engineering. He holds a BS degree and an MS degree from Chung-Cheng Institute of Technology, as well as a Ph.D. degree in Electrical Engineering from the University of Southern California. For a substantial part of his career, he dedicated 25 years to antenna research and development at CSIST, where he served as the director of the antenna section for 17 years. During this time, he contributed significantly to the development of various types of antennas, including reflector antennas, phased array antennas, slot array antennas, and communication antennas. Additionally, he worked on creating different antenna test ranges. In 1998, Prof. Chang moved from his director position to become the Dean of the Engineering School at Da-Yeh University (DYU). Later, he was invited to be the Dean of the College of Electrical and Communication Engineering at Asia Eastern University of Science and Technology (formerly known as Oriental Institute of Technology) in 2006. During his tenure there, he established several research laboratories focusing on hybrid antennas, near field antenna test range, communication measurement systems, electromagnetic compatibility (EMC), and electromagnetic simulation. Apart from his antenna research, Prof. Chang has shown interest in Signal Integrity (SI) research, with funding support from various industries. In August 2016, he transitioned from academia to industry and has since been working as a consultant for several companies. Throughout his career, Prof. Chang has been a prolific author, publishing over 400 papers in journals and conferences. He also holds an impressive portfolio of 35 patents. In addition to his research contributions, he has actively engaged in the IEEE community, founding and leading several chapters and organizations, such as the IEEE AP-S Taipei Chapter and IEEE MTT-S Taipei Chapter. He has also served as the President of the Chinese Microwave Association. Prof. Chang's expertise and leadership have earned him numerous awards and honors. He has been recognized for his research excellence at CSIST, DYU, and AEUST. In 2022, he was honored with the prestigious IEEE Life Achievement Award. As 5G technology and Low Earth Orbit (LEO) satellites revolutionize wireless communication, the need for accurate, fast, and comprehensive OTA (Over-The-Air) testing becomes crucial. In this talk, we will discuss various traditional OTA systems such as DFF (Direct Far Field Range), NFF (Near Field Range), and CATR (Compact Antenna Test Range). Apart from the traditional OTA systems, a brand new TCATR (Toroidal CATR) will also be discussed. The reflector of TCATR is designed as a continuous torus which minimizes field ripple inside the QZ. Multiple feeds locate inside another anechoic chamber. The ripples inside QZ due to the edge diffraction and feed spillover is almost neglected. This good QZ performance enhances the accuracy and repeatability of measurement. The TCATR will also reduce OTA measurement time with multiple plane waves.


	Mr. Su-Wei Chang TMY Technology Inc. (TMYTEK) Topic : Challenges and recent developments of mm-Wave Technologies
	Mr. Su-Wei Chang received the B.S. degree in EE from the Feng-Chia University in 2005. He then worked in Academia Sinica Institute of Astronomy & Astrophysics (ASIAA) as a mmWave receiver engineer, where he was involved in developing the mmWave and sub-mmWave receiver systems for radio telescopes. While working in ASIAA, he was leading and developing the 200-600 GHz receiver for Sub-Millimeter Array (SMA) and has been invited to Harvard-Smithsonian Center for Astrophysics. Later on, he received a master's degree and is a Ph.D. candidate in the ECE at UMass-Amherst. His research interests include low noise, cryogenic circuits design, and applications, silicon-based MMIC up to mm-wave bands. He founded TMYTEK in 2014 and is currently the president. Recently, Su-Wei received the Young Scholars‘ Creativity Award of Pan Wen Yuan Foundation. He published 48 papers in SCI international journals, which were cited 694 times. H index 15, i10 index 20. Founder and President, Su-Wei Chang is a Ph.D. candidate at the University of Massachusetts, Amherst, with expertise in millimeter-wave and submillimeter-wave front-end RF systems, millimeter-wave circuit (MMIC) design, and ultra-low temperature electronic circuit design. He published 48 papers in SCI international journals, which were cited 694 times. H index 15, i10 index 20. We are experiencing today rapid changes in information due to new technologies such as the metaverse, quantum computers, 5G, LEO, and autonomous vehicles. mmWave technology is the key infrastructure that will be the most critical in the present and the future to support those applications and turn them into a reality. Although the available bandwidth of mmWave frequencies is promising, the propagation characteristics are significantly different from microwave frequency bands in terms of path loss. TMYTEK provides millimeter-wave advances in 5G/B5G and satellite communication applications. Design, materials, manufacturing, and testing are all covered by this one-stop shop solution. By revolutionizing the mmWave RF front-end with novel devices, designing ready-to-use beamformers and redesigning the OTA testing approach, TMYTEK enables industrial inventions to reach the market faster. The Phased Array Antenna design capabilities support SATCOM, 5G/B5G, and radar sensing that covers different GHz frequencies, and antenna elements from small scale to large matrix. It offers well-balanced high EIRP performances, thermal and compact size in one solid tile-based design. Contributed by the deep-dive ecosystem collaboration, TMYTEK’s design is the only choice for the best cost-effective and time-efficient solution for essential performance.

Keynote Speakers