Title :
A modal expansion method of analysis and measurement on aperture-coupled microstrip antenna
Author :
Ittipiboon, Apisak ; Oostlander, Ron ; Antar, Yahia M M ; Cuhaci, Michel
Author_Institution :
Common. Res. Centre, Ottawa, Ont., Canada
fDate :
11/1/1991 12:00:00 AM
Abstract :
The coupling of a feedline to a rectangular patch through an aperture in the ground plane separating them is described using modal field analysis. The cavity model is used to describe the patch, the feedline is represented by a dynamic planar waveguide model, and the coupling is via a magnetic current in the aperture. Both theoretical and experimental results for the antenna performance are presented and design curves are generated. Very good agreement between theory and experiment was obtained. Results and design curves were obtained for antennas at 5 and 10 GHz, respectively
Keywords :
antenna feeders; antenna radiation patterns; electric impedance; microstrip antennas; 10 GHz; 5 GHz; aperture-coupled microstrip antenna; cavity model; design curves; dynamic planar waveguide model; feedline; input impedance; modal expansion method; modal field analysis; radiation pattern; rectangular patch; Admittance; Antenna feeds; Antenna measurements; Aperture antennas; Circuits; Dielectric substrates; Impedance; Microstrip antenna arrays; Microstrip antennas; Military computing;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
