DocumentCode :
1466224
Title :
Connected Patch Array Analysis Using the Characteristic Basis Function Method
Author :
Hay, Stuart G. ; O´Sullivan, John D. ; Mittra, Raj
Author_Institution :
CSIRO ICT Centre, Epping, NSW, Australia
Volume :
59
Issue :
6
fYear :
2011
fDate :
6/1/2011 12:00:00 AM
Firstpage :
1828
Lastpage :
1837
Abstract :
The characteristic basis function method (CBFM) is extended to apply to efficient analysis of dual-polarized connected-patch arrays where neighboring patches are connected via two-wire transmission lines and a groundplane. Comparison with a reference solution shows that the use of tertiary basis functions can significantly improve the CBFM approximation to the array currents and radiation patterns. A simple procedure for estimating the error in the CBFM current is shown to produce good approximations to the true error and therefore may be useful more generally in determining suitable parameters of the CBFM basis. The technique is applied to a prototype phased array feed for a next-generation radio telescope. A thin dielectric supporting the array patches is shown to produce a loading effect that modifies the radiation patterns. Good agreement with the results of other techniques and measured data has been obtained.
Keywords :
antenna radiation patterns; microstrip antennas; transmission lines; array currents; characteristic basis function method; dual-polarized connected-patch arrays; efficient analysis; groundplane; radiation patterns; two-wire transmission lines; Antenna radiation patterns; Approximation methods; Arrays; Equations; Finite element methods; Impedance; Moment methods; Array antennas; connected arrays; electromagnetic analysis; numerical analysis;
fLanguage :
English
Journal_Title :
Antennas and Propagation, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-926X
Type :
jour
DOI :
10.1109/TAP.2011.2123867
Filename :
5725167
Link To Document :
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