Exploiting a rigorous variational formulation, the main effects of a chiral cover on a cavity backed microstrip patch antenna are pointed out in this paper. An hybrid finite element-boundary integral method is employed to numerically solve the electromagnetic problem modeled by a variational functional. The dependence of the resonance frequency on the cover thickness and on the chirality admittance of the material is first investigated. More in detail, it is demonstrated that a chiral cover permits to reduce the antenna dimensions, compared to an isotropic one, for a fixed working frequency. Then, the variation of gain properties, cross-polarization levels, radiation resistance, radiation efficiency, and radar cross-section is also investigated through several numerical examples.
Bilotti, F., Vegni, L. (2003). Chiral cover effects on microstrip antennas. IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 51(10), 2891-2898 [10.1109/TAP.2003.816317].
Chiral cover effects on microstrip antennas
BILOTTI, FILIBERTO;
2003-01-01
Abstract
Exploiting a rigorous variational formulation, the main effects of a chiral cover on a cavity backed microstrip patch antenna are pointed out in this paper. An hybrid finite element-boundary integral method is employed to numerically solve the electromagnetic problem modeled by a variational functional. The dependence of the resonance frequency on the cover thickness and on the chirality admittance of the material is first investigated. More in detail, it is demonstrated that a chiral cover permits to reduce the antenna dimensions, compared to an isotropic one, for a fixed working frequency. Then, the variation of gain properties, cross-polarization levels, radiation resistance, radiation efficiency, and radar cross-section is also investigated through several numerical examples.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
