DocumentCode :
1504004
Title :
Automated design of corrugated feeds by the adjoint network method
Author :
Mongiardo, Mauro ; Ravanelli, Rodolfo
Author_Institution :
Ist. di Elettronica, Perugia Univ., Italy
Volume :
45
Issue :
5
fYear :
1997
fDate :
5/1/1997 12:00:00 AM
Firstpage :
787
Lastpage :
793
Abstract :
Automated full-wave design of corrugated feeds is generally accomplished by repeated numerical analysis of different feed geometries as obtained by slightly varying the geometrical dimensions of the corrugations. Since a corrugated feed contains hundreds of discontinuities, the above procedure is very time-consuming. In order to reduce the numerical effort, the adjoint network method (ANM) has been applied to the design and sensitivity analysis of circular corrugated feeds radiating into free space. By using the ANM, the return loss sensitivities with respect to variations of all geometrical dimensions are obtained with just one analysis of the entire feed. When a geometrical parameter is varied, only the discontinuity containing that parameter needs to be analyzed; the overall sensitivities being computed by means of a simple formula. Corrugated feeds with more than 100 corrugations have been designed by using the ANM. They have been built and measured demonstrating the efficiency of the proposed approach
Keywords :
antenna feeds; circular waveguides; losses; satellite antennas; sensitivity analysis; adjoint network method; circular corrugated feeds; full-wave design; geometrical parameter; return loss sensitivities; sensitivity analysis; Application software; Design automation; Design optimization; Feeds; Microwave circuits; Microwave filters; Modal analysis; Sensitivity analysis; Shape control; Transmission line matrix methods;
fLanguage :
English
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9480
Type :
jour
DOI :
10.1109/22.575601
Filename :
575601
Link To Document :
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