Title :
Analysis of an aperture-coupled NRD-fed microstrip patch antenna
Author :
Reddy, C.J. ; Ittipiboon, A. ; Cuhaci, M.
Author_Institution :
Communications Res. Centre, Ottawa, Ont., Canada
fDate :
June 28 1993-July 2 1993
Abstract :
An aperture-coupled microstrip antenna fed by an NRD (nonradiative dielectric) guide is analyzed by the modal expansion method. The unknown modal field expansion coefficients are determined using the Lorenz reciprocity theorem. After all relevant field components are found, the admittance of the slot is derived by applying the Poynting theorem to the slot volume. An expression is given for the input impedance of the NRD guide feeding the microstrip patch antenna.<>
Keywords :
antenna feeds; electric admittance; electric impedance; microstrip antennas; nonradiative dielectric waveguides; Lorenz reciprocity theorem; NRD waveguide; Poynting theorem; admittance; aperture-coupled microstrip antenna; input impedance; modal expansion; nonradiative dielectric guide; patch antenna; Dielectric constant; Dielectric losses; Frequency; Microstrip antennas; Patch antennas; Planar transmission lines; Propagation losses; Testing; Transmission line discontinuities; Waveguide discontinuities;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1993. AP-S. Digest
Conference_Location :
Ann Arbor, MI, USA
Print_ISBN :
0-7803-1246-5
DOI :
10.1109/APS.1993.385269
