Title :
Multilayer effects on cavity-backed slot antennas
Author :
Vouvakis, Marinos N. ; Balanis, Constantine A. ; Birtcher, Craig R. ; Polycarpou, Anastasis C.
Author_Institution :
Dept. of Electr. Eng., Arizona State Univ., Tempe, AZ, USA
fDate :
3/1/2004 12:00:00 AM
Abstract :
A hybrid technique of the finite-element method and the method of moments (FEM/ MoM) is used to analyze the effects of multilayered superstrates on cavity-backed slot (CBS) antennas. The spectral-domain approach is used to compute the MoM admittance matrix. An asymptotic extraction technique is applied to improve the computational efficiency of the convolution integrals. Effects on the input impedance, efficiency, gain, and radiation patterns are presented for different antennas. The numerical results are validated with measurements and published data.
Keywords :
antenna radiation patterns; electric impedance; finite element analysis; method of moments; slot antennas; spectral-domain analysis; MoM admittance matrix; asymptotic extraction technique; cavity-backed slot antennas; finite-element method; method of moments; multilayer effect; multilayered superstrate; radiation pattern; spectral-domain; Admittance; Antenna radiation patterns; Computational efficiency; Convolution; Data mining; Finite element methods; Impedance; Moment methods; Nonhomogeneous media; Slot antennas;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2004.824672
