Title :
FEM-BEM formulation for the analysis of cavity-backed patch antennas on chiral substrates
Author :
Bilotti, Filiberto ; Toscano, Alessandro ; Vegni, Lucio
Author_Institution :
Dipt. di Ingegneria Elettronica, Univ. degli Studi Roma Tre, Rome, Italy
fDate :
2/1/2003 12:00:00 AM
Abstract :
An extended variational formulation to study cavity-backed microstrip patch antennas with chiral materials is presented. A finite-element boundary integral numerical approach is applied to satisfy the stationary condition associated with the variational formulation and some features of chiral media for patch antenna applications are investigated. Specifically, an appreciable reduction of the antenna dimensions with respect to the isotropic case and an undesirable increase in the cross-polarization levels are observed.
Keywords :
antenna theory; boundary-elements methods; chirowaveguides; finite element analysis; microstrip antennas; variational techniques; FEM-BEM formulation; antenna dimensions; boundary integral numerical approach; cavity-backed patch antennas; chiral substrates; cross-polarization levels; extended variational formulation; microstrip antennas; Bandwidth; Finite element methods; Integral equations; Magnetic fields; Magnetic materials; Microstrip antennas; Patch antennas; Permittivity; Surface impedance; Surface waves;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2003.809076
