The RCS of a microstrip patch on an arbitrarily biased ferrite substrate

Author

Yang, Hung-Yu ; Castaneda, Jesse A. ; Alexopoulos, Nicolaos G.

Author_Institution

PRD Inc., Santa Monica, CA, USA

Volume

41

Issue

12

fYear

1993

fDate

12/1/1993 12:00:00 AM

Firstpage

1610

Lastpage

1614

Abstract

The radar cross section (RCS) of a rectangular microstrip patch on a lossy biased ferrite substrate is investigated. The analysis is based on a full-wave integral equation formulation in conjunction with the method of moments. In the analysis, the direction of the bias field is not prescribed. The RCS characteristics, especially the resonance behavior of a patch with various biasing conditions, are studied and compared to those for an unbiased ferrite. It is found that the resonant frequencies of a patch vary significantly with the change of the bias field, except for those resonant modes which have a dominant magnetic-field component in the direction of the bias field. This phenomenon is explained with a waveguide cavity model, and provides an independent check of the analysis. It is found that the magnetic loss affects the RCS at resonances significantly

Keywords

ferrite applications; integral equations; magnetic leakage; microstrip antennas; numerical analysis; radar cross-sections; substrates; RCS; arbitrarily biased ferrite substrate; biasing conditions; full-wave integral equation formulation; magnetic loss; method of moments; radar cross section; rectangular microstrip patch antenna; resonance behavior; waveguide cavity model; Ferrites; Independent component analysis; Integral equations; Magnetic analysis; Magnetic losses; Magnetic resonance; Microstrip; Moment methods; Radar cross section; Resonant frequency;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.273303

Filename

273303