Title :
Cavity backed antennas with multilayer superstrates
Author :
Vouvakis, M.N. ; Polycarpou, A.C. ; Balanis, C.A.
Author_Institution :
Dept. of Electr. Eng., Arizona State Univ., Tempe, AZ, USA
Abstract :
A superstrate (cover) dielectric or magnetic layers are often used to protect low profile conformal antennas, such as cavity backed antennas from environmental hazards. In this paper, the hybrid FEM/MoM is been used to handle any aperture configuration backed by arbitrary shaped and filled (with general anisotropic material) cavities with multilayered dielectric/magnetic superstrates. In the cavity region the vector FEM is used to compute for the electric field, while the combination of spectral/spatial domain MoM is used to compute the field in the exterior layered region. To demonstrate the accuracy of the method two cases are analyzed and compared with other methods and measurements.
Keywords :
anisotropic media; conformal antennas; finite element analysis; inhomogeneous media; method of moments; radomes; spectral-domain analysis; anisotropic material; aperture configuration; cavity backed antennas; cavity region; dielectric layers; electric field; hybrid FEM/MoM; low profile conformal antennas; magnetic layers; multilayer superstrates; multilayered dielectric/magnetic superstrates; spectral/spatial domain MoM; vector FEM; Anisotropic magnetoresistance; Apertures; Dielectrics; Hazards; Magnetic anisotropy; Magnetic domains; Magnetic multilayers; Nonhomogeneous media; Perpendicular magnetic anisotropy; Protection;
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.2001.959429
