A simplified model is suggested for describing aperture-coupled patch antennas in CAD applications. The scattering parameters of the antenna are calculated by assuming a single mode distribution for the currents on the slot and on the microstrip-line. The coupling between the slot and the patch is represented by superimposing a contribution from a fundamental mode and that from higher order modes. The former is described by a complex eigenvalue of a cavity model with impedance walls. The latter is described by a parallel plate waveguide model, which properly accounts for the storage of reactive energy close to the slot. Numerical results are presented and compared with experiments. In particular, S-band patches have been fabricated and tested to demonstrate the accuracy of the model.
|Autori interni:||AVITABILE, Gianfranco|
|Titolo:||A CAD-ORIENTED APPROACH FOR APERTURE-COUPLED PATCH ANTENNAS|
|Rivista:||INTERNATIONAL JOURNAL OF MICROWAVE AND MILLIMETER-WAVE COMPUTER-AIDED ENGINEERING|
|Data di pubblicazione:||1993|
|Digital Object Identifier (DOI):||10.1002/mmce.4570030410|
|Appare nelle tipologie:||1.1 Articolo in rivista|