DocumentCode :
75945
Title :
Sparse 2-D Array Placement for Arbitrary Pattern Mask and With Excitation Constraints: A Simple Deterministic Approach
Author :
Araque Quijano, J.L. ; Righero, Marco ; Vecchi, Giuseppe
Author_Institution :
EMC-UN Labs., Univ. Nac. de Colombia, Bogota, Colombia
Volume :
62
Issue :
4
fYear :
2014
fDate :
Apr-14
Firstpage :
1652
Lastpage :
1662
Abstract :
We present a novel algorithm for the synthesis of planar (2-D) arrays subject to arbitrary pattern masks and excitation constraints (e.g., dynamic range). The algorithm is simple and deterministic, and considers the radiating element pattern. The procedure starts with a conventional constrained fixed-grid synthesis on a regular lattice, yielding a goal radiated field. Next, element locations are selected sequentially by maximizing projection on field difference to goal, while excitation amplitudes are computed using fixed-grid constrained synthesis for irregular lattices. The final result is the sparse layout and constrained excitation coefficients. The proposed method is validated against literature results; application examples are given for circular flat-top, isoflux and triangular flat-top shaped beam patterns, with constraints on excitation coefficients dynamic range, both for isotropic and patch-type element patterns.
Keywords :
antenna radiation patterns; electromagnetic wave polarisation; planar antenna arrays; shaped beam antennas; arbitrary pattern mask; circular flat top shaped beam patterns; constrained excitation coefficients; element locations; excitation constraints; fixed grid constrained synthesis; isoflux shaped beam patterns; planar 2D arrays; radiating element pattern; regular lattice; sparse 2D array placement; sparse layout; triangular flat top shaped beam patterns; Antennas; Arrays; Dynamic range; Layout; Optimization; Standards; Vectors; Antenna synthesis; aperiodic arrays synthesis; array antennas; planar arrays; shaped beams; sparse arrays;
fLanguage :
English
Journal_Title :
Antennas and Propagation, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-926X
Type :
jour
DOI :
10.1109/TAP.2013.2288363
Filename :
6651690
Link To Document :
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