Title :
Analysis of ferrite-loaded cavity-backed antennas including nonlinear and nonuniform magnetization effects
Author :
Vouvakis, Marinos N. ; Polycarpou, A.C. ; Balanis, C.A.
Author_Institution :
Dept. of Electr. Eng., Arizona State Univ., Tempe, AZ, USA
Abstract :
In this paper, for the first time according to the authors´ knowledge, the formal nonlinear magnetostatic analysis is used to compute the spatial nonuniform permeability tensor of the ferrite samples in antenna applications. The 3-D nonlinear magnetostatic problem is first solved with the aid of a nodal FEM solution, and then the hybrid finite element method/method of moments (FEM/MoM) full-wave analysis is used to compute various antenna/scattering characteristics of the cavity backed antenna.
Keywords :
antennas; electromagnetic wave scattering; ferrites; finite element analysis; magnetic permeability; magnetostatics; method of moments; 3D nonlinear magnetostatic problem; antenna characteristics; ferrite-loaded cavity-backed antennas; finite element method; hybrid FEM/MoM full-wave analysis; method of moments; nodal FEM solution; nonlinear magnetization effects; nonlinear magnetostatic analysis; nonuniform magnetization effects; scattering characteristics; spatial nonuniform permeability tensor; Ferrimagnetic materials; Ferrites; Magnetic analysis; Magnetic anisotropy; Magnetostatics; Permeability; Perpendicular magnetic anisotropy; Radio frequency; Saturation magnetization; Tensile stress;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2001. IEEE
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-7803-7070-8
DOI :
10.1109/APS.2001.959430
