Analysis of a parallel array of waveguide or cavity-backed rectangular slot antennas
Abstract
The circuit and radiation properties of a finite parallel array of N transverse, waveguide backed, rectangular slot antennas are investigated. A theoretical analysis is based upon a rigorous integral equation approach, and the theoretically predicted results are compared with experimental measurements. An array of flush-mounted slot antennas consists of N parallel, transverse slots cut in an infinitesimally thin ground plane of large lateral extent and backed by a rectangular waveguide or cavity. Modes of array excitation are considered: first by an incident dominant-mode wave in the backing waveguide and secondly by impressed driving currents maintained at the centers of one (or more) slots by a system of input currents. It is indicated that the new, approximate parasitic array theory for waveguide-backed slots predicts accurate results for arrays of narrow slots having deep backing waveguides or cavities.
- Publication:
-
Ph.D. Thesis
- Pub Date:
- 1974
- Bibcode:
- 1974PhDT........58M
- Keywords:
-
- Antenna Arrays;
- Slot Antennas;
- Waveguides;
- Antenna Feeds;
- Antenna Radiation Patterns;
- Circuits;
- Numerical Analysis;
- Communications and Radar