Efficient assessment of well-stirred operation of reverberation chamber using coupling transfer gain functions

ABSTRACT

This study presents a new efficient alternative procedure for the assessment of the well-stirred (ws) condition of a mode-stirred reverberation chamber (RC) using newly developed coupling transfer gain functions. Coupling transfer voltage and current gain functions of the RC environment are developed from the ABCD parameters of the measured two-port S parameters in an RC. The proposed procedure involves the determination of the frequency corresponding to the well-stirred operation ($f_{\mathrm{wso}}$) of RC through the assessment of RC EM-field distribution and checking of theindependent samples requirements for a particular stirred environment. The estimated $f_{\mathrm{wso}}$ of the RC using proposed method provides a faster way for the determination of the over-modded condition of RC when the placement of the two-antennas in imperative in RC.  The minimization of antenna loading facotr results in more accurate esitmation of f_wso  using proposed procedure than only transfer characteristics.

Keywords:

• Reverberation chamber (RC)
• well-stirred (ws) condition
• S-parameters
• transfer function
• fast RC calibration

Acknowledgments

This work was supported by Abu Dhabi University Office of Research and Sponsored Programs and by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIP) (No. 2016R1A2B4015020).

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This work was supported by Abu Dhabi University Office of Research and Sponsored Programs and by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIP) [grant number 2016R1A2B4015020].

Notes on contributors

J. Yousaf

J. Yousaf received the PhD. and MS degrees in Electronics and Electrical Engineering from Sungkyunkwan University, Suwon, Korea, in 2019 and 2016 respectively. He is currently working as Assistant Professor in Electrical and Computer Engineering department of Abu Dhabi University, United Arab Emirates. Lastly, he worked as Brain of Korea (BK)-Postdoctoral Fellow in the EMC laboratory of Sungkyunkwan University, Suwon, Korea from March 2019 to July 2019. Previously, he worked as the senior RF researcher in the Pakistan Space and Upper Atmosphere Research Commission (SUPARCO: National Space Agency of Pakistan) from 2009 to 2013. His research interests include applications of Artificial intelligence in electromagnetics and bio-applications, Reverberation chamber, ESD analysis, CP antenna designing and modeling, Chipless RFID tags and EMI/EMC analysis and measurements of the systems for space and commercial environment. His research work has results in over 60 publications in leading peer reviewed international technical journal, and referred international and national conferences. He was the recipient of prestigious Brain of Korea (BK)-21 Post doctorate fellowship 2019, 2nd Best Ph.D. Graduate Award of collage 2019, Best Paper Award in 49th KIEE Summer Conference 2018, winner of the Grand Prize for Best Paper in 3rd Electromagnetic Measurement Competition of KIESS 2018, Prestigious Annual EMC Scholarship Award of KIEES and EMCIS Co. Ltd 2017, Best EMC Symposium Paper Award and EDCOM Best Student Paper Award Finalist in 2017 IEEE International Symposium on EMC and SI/PI 2017 (USA).

M. Ghazal

M. Asaad Ghazal obtained his PhD and MSc degrees in Electrical and Computer Engineering (ECE) from Concordia University, Canada, in 2010 and 2006. He was awarded Alexander Graham Bell Fellowship by NSERC and the QFRNT by the Government of Quebec. He obtained his BSc in Computer Engineering from the American University of Sharjah, where he was awarded the President's Cup and the Ministry of Education Shield for Creative Thinking. Dr. Ghazal is currently a Professor of Electrical and Computer Engineering at Abu Dhabi University. He has received multiple awards including the Distinguished Faculty Award of Abu Dhabi University in 2016 and 2014, and the Abu Dhabi University Teaching Award in 2013. He has authored many publications in technical journals and international conferences including Elsevier's Renewable and Sustainable Energy Reviews, IEEE Transactions on Image Processing, IEEE Transactions on Circuits and Systems for Video Technology, and IEEE Transactions on Consumer Electronics. His current research interests are biomedical signal processing, mobile computing, and embedded systems. He is a Senior Member of the IEEE and a member of the ACM and BMES.

H. Lee

H. Lee received the PhD degree in Electronics and Electrical Engineering from Sungkyunkwan University, Suwon, Korea, in 2020 and B.S. in Information and Communication Engineering from Dongyang Mirae University, Seoul, Korea, in 2014. He is currently working in the electrostatic discharge team of design input center, SK Hynix, South Korea. His research interests include Signal/Power Integrity (SI/PI), Electromagnetic Interference/Compatibility (EMI/EMC). In particular, his current research topics focus on the system-level EMC and stochastic EMC and ESD.

M. Faisal

M. Faisal received his MS degree in Electrical and Electronics Engineering from Sungkyunkwan University, South Korea in 2019 and B.S. degree in Electronics Engineering from Bahauddin Zikriya University Multan, Pakistan, in 2014. His research interests include antenna design and modeling, electromagnetic interference, DC-DC buck converter, Artificial intelligence, Reverberation chamber electromagnetic compatibility Measurements.

J. G. Yang

J. G. Yang received the B.S., M.S. and Ph.D. degrees in information and communication engineering from Kunsan National University, Korea, in 1995, 1997 and 2008, respectively. Since 1997, he has been with Radio Research Agency of Ministry of Science and ICT in Korea, where he is currently a deputy director of technical regulation division. His primary interests are electromagnetic compatibility (EMC) and telecommunication facility regulations.

W. Nah

W. Nah (M'01) received the B.S., M.S. and Ph.D. degrees in electrical engineering from Seoul National University, Korea, in 1984, 1986 and 1991, respectively. Since 1995, he has been with Sungkyunkwan University in Korea, where he is currently a professor in the College of Information and Communication Engineering. He was a guest researcher at the Superconducting Super Collider Laboratory (SSCL) in the USA from 1991 to 1993, and was also with the Korea Electrical Research Institute (KERI) in Changwon, Korea as a senior researcher from 1991 to 1995. His primary interests are electromagnetic interference/compatibility (EMI/EMC) analysis, and signal /power integrity (SI/PI)-aware electric/electronic circuit analysis and design.