Topic: Scaling the Sidelobe Magnitude of Fixed Classical Beamformer
Speaker: Lim Yong Ching, Nangyang Technological University
Date and time: 15:00, March 26
Venue: Room 3-301, SIST
Host:
Ha Yajun
Abstract:
The peak sidelobe magnitudes of some classical phased array beamformer such as the Hamming and Blackman beamformers are fixed and are not adjustable. Presented in this talk is a method for adjusting the peak sidelobe magnitudes of any beamformer including the fixed non-adjustable beamformers. The method involves expressing the array factor in terms of a variable x in the form of Chebyshev polynomial of the first kind followed by scaling of the x-axis. This talk is derived from one of the speaker’s papers published in a 2021 issue of IEEE Signal Processing Letters.
Biography:
Dr Lim’s research interests focus on (1) signal processing for implementation on silicon and (2) phased array beamformer. Dr Lim is recipient of (1) the 1996 IEEE Circuits and Systems Society's Guillemin-Cauer best paper award for one of his papers published in IEEE Trans. on CAS and (2) the 1990 IREE (Australia) Norman Hayes Memorial best paper award for his paper published in the Journal of Electrical and Electronics Engineering (Australia).
Dr Lim is a Life Fellow of the IEEE. He served as a distinguished lecturer in IEEE CAS Society’s distinguished lectures program from January 2001 to December 2002. He had served as Editor and Associate Editor of various journals and General-chair of several international conferences.
Before his retirement from the universities in 2018, he taught courses on digital and analogue integrated circuit design, digital signal processing, and computer architecture.
Lim Yong Ching was born in 1953 in Malaysia. He was awarded an ASEAN (东南亚国家联盟) scholarship to continue his upper secondary education in Singapore. He read electrical engineering in Imperial College, London, and was awarded the Siemens Memorial Award for being the top student in the entrance examination. He was awarded the 1977 IEE prize for being the student with the best all-round performance in the final year examination. He continued to read PhD in Imperial on a University of London studentship.
After his graduation from Imperial, Dr Lim served in (1) Naval Postgraduate School (California), (2) National University of Singapore (Singapore) and (3) Nanyang Technological University (Singapore).