While simulating radiation patterns of circular arc arrays around
cylinders, I noticed that if I leave all sources having same amplitude
distribution, then there results a serious pattern distortion near the
boresight. This can be corrected by suitable taper of the amplitude
distribution. (Taylor / Hamming or maybe other even-symmetric types).
Phase taper (even-symmetic) alone could not correct this. A proper
beam could be formed with such corrections.
What is most surprising was that beamwidths and sidelobe levels were
*significantly* reduced when both amplitude and phase tapers were used.
Did anyone else observe such a similar phenomenon earlier ?
- regards,
=================================================================
Deb Chatterjee
Graduate Research Assistant
Radar Systems and Remote Sensing Laboratory
Department of Electrical Engineering and Computer Science
Room 322, Nichols Hall
2291 Irving Hill Road
Lawrence, KS 66045-2969
tel: (913)864-7742
fax: (913)864-7789
e-mail: dchatterjee_at_kuhub.cc.ukans.edu
Received on Fri Apr 26 1996 - 03:13:00 EDT
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