Title :
Scattering and radiation from microstrip patch antennas and arrays residing in a cavity
Author :
Jin, J.-M. ; Volakis, J.L.
Author_Institution :
Radiat. Lab., Michigan Univ., Ann Arbor, MI, USA
Abstract :
A hybrid numerical technique for characterizing the scattering and radiation properties of microstrip patch antennas and arrays residing in a cavity which is recessed in a ground plane is presented. The technique combines the finite-element and boundary integral methods to formulate a system for the solution of the fields at the aperture and those inside the cavity via the bioconjugate gradient method and fast Fourier transform. By virtue of the finite-element method, the proposed technique is applicable to patch antennas and arrays residing on or embedded in a layered dielectric substrate and is also capable of treating various feed structures and impedance loads. Several numerical results are presented, demonstrating the efficiency and capability of the technique.<>
Keywords :
antenna radiation patterns; boundary-elements methods; fast Fourier transforms; finite element analysis; microstrip antennas; microwave antenna arrays; bioconjugate gradient method; boundary element method; cavity; fast Fourier transform; feed structures; finite element method; ground plane; hybrid numerical technique; impedance loads; layered dielectric substrate; microstrip antenna arrays; microstrip patch antennas; radiation properties; scattering properties; Antenna arrays; Apertures; Fast Fourier transforms; Finite element methods; Gradient methods; Integral equations; Microstrip antenna arrays; Microstrip antennas; Patch antennas; Scattering;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1991. AP-S. Digest
Conference_Location :
London, Ontario, Canada
Print_ISBN :
0-7803-0144-7
DOI :
10.1109/APS.1991.174925
