Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/72714
Title: ISM band active array with electronically controlled element weighting
Authors: Liew, Yew Hui
Joe, Jurianto 
Leong, Mook Seng 
Issue Date: 2000
Source: Liew, Yew Hui,Joe, Jurianto,Leong, Mook Seng (2000). ISM band active array with electronically controlled element weighting. IEEE Antennas and Propagation Society, AP-S International Symposium (Digest) 3 : 1272-1275. ScholarBank@NUS Repository.
Abstract: A four-element active array with electronically controlled element weighting is presented. This active array consists of variable gain active antennas with gain control accomplished through changing the amplifier biasing. Matching across the transistor bias range is implemented by judiciously incorporating varactor diodes in the matching circuits in order to ensure good input and output match. This active array is capable of forming a desired radiation pattern via tuning the appropriate amplitude and phase control voltages. Examples of measured radiation pattern for this active array, shaped using some of the standard antenna pattern synthesis methods, are also presented. These radiation patterns agreed well with those predicted by simulation within the limits of experimental results.
Source Title: IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)
URI: http://scholarbank.nus.edu.sg/handle/10635/72714
ISBN: 0780363698
ISSN: 02724693
Appears in Collections:Staff Publications

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