Phased Array & Classical Beamformer Design

Speaker:   Prof. Yong Ching Lim

Time:       10:00-11:30, Aug. 9

Location:  SIST 1A 200

Host:       Prof. Xin Lou

Abstract:

This talk consists of 2 parts. Presented in Part-I is a general overview of some of the important issues in phased array design. It includes a brief discussion on (1) beamforming, (2) DOA (direction of arrival) estimation, (3) element-separation to wavelength ratio, (4) Fisher information, and (5) Frecher-Darmois-Cramer-Rao lower bound. An example of DOA estimation using maximum entropy method vs Dolph-Chebyshev beamformer is presented. Presented in Part-II is Part-I of a 3-part series on detail discussions of classical beamformer design. It covers step-by-step derivations of the radiation properties of an array with directivity plots. Important properties including (a) beam-width, (b) zero-locations, (c) sidelobe magnitudes and (d) sidelobe-peak locations of the uniform array are derived and discussed in detail.

Bio:

Dr. Lim received the ACGI (1977), BSc (1977), DIC (1980), and PhD (1980) degrees from Imperial College, London. He was with Naval Postgraduate School (1980 to 1982), National University of Singapore (1982 to 2003), and Nanyang Technological University (2003 to 2018). He was the first author recipient of the 1996 IEEE Circuits and Systems Societys Guillemin-Cauer Best Paper Award and the first author recipient of the 1990 IREE (Australia) Norman Hayes Memorial Best Paper Award. Dr Lim is a Life Fellow of the IEEE. He served as a distinguished lecturer of the IEEE CAS Society from 2001 to 2002.

SIST-Seminar 18192