- TITLE:
-
Phase-Only Tapers for Regular Planar Arrays,
a Heuristic Nonlinear-FM Approach
- AUTHORS:
- J. O. Coleman, D. P. Scholnik, and K, R. McPhail
- ABSTRACT:
- We present a simple approach to constructing
phase-only tapers for regular planar arrays that is
analogous to the instantaneous-frequency approach
classically used to construct FM-chirp waveforms with
high time-bandwidth products. Design experiments for
a large triangular-grid array show that the crude
results yielded by this method when aperture-beamwidth
products are modest can sometimes be "tweaked" into
reasonableness. We conjecture that such a taper would
improve upon the usual uniform-weight starting point
for a nonlinear-optimization approach that seeks out a
local optimum. Specific design examples presented
here nominally aim to approximate a brick-wall beam
and a variant of a Gaussian beam.
- DOWNLOADABLE PREPRINT:
-
PDF (4.4 Mbytes),
- STATUS:
- Presentated to the 2010 IEEE International Symposium on Phased Array Systems &
Technology, Boston MA, USA,
Oct. 12-15, 2010.
- DATE OF ENTRY:
-
October 2010.