Title :
Scattering reduction of a microstrip patch with an in-plane biased ferrite cover layer
Author :
Yang, D.H.Y. ; Castaneda, J.A.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Illinois Univ., Chicago, IL, USA
Abstract :
A full-wave moment-method analysis of scattering from a microstrip patch with an in-plane biased ferrite cover is presented. A modified exponential-matrix method is employed to facilitate the computation of the Green´s function for layered media including non-reciprocal layers. The analysis enables the investigation of the scattering characteristics due to the effect of a biased ferrite cover layer. It is observed that there is significant resonant RCS reduction when the biased field is in the direction of the resonant-mode current. This RCS reduction is due to the existence of the extra-ordinary wave and the magneto-static waves within the ferrite layer.
Keywords :
Green´s function methods; electromagnetic wave scattering; ferrimagnetic materials; ferrite devices; magnetic thin film devices; matrix algebra; method of moments; microstrip antennas; radar cross-sections; radomes; Green´s function; biased field; extra-ordinary wave; ferrimagnetic thin films; ferrite layer; full wave moment method analysis; in-plane biased ferrite cover layer; layered media; magnetostatic waves; microstrip patch; modified exponential-matrix method; nonreciprocal layers; radomes; resonant RCS reduction; resonant mode current; scattering characteristics; scattering reduction; Ferrites; Gaussian processes; Magnetic analysis; Magnetic anisotropy; Microstrip antenna arrays; Microstrip antennas; Perpendicular magnetic anisotropy; Resonance; Saturation magnetization; Scattering;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1995. AP-S. Digest
Conference_Location :
Newport Beach, CA, USA
Print_ISBN :
0-7803-2719-5
DOI :
10.1109/APS.1995.530241
