Radiation from cone-shaped flanged open-ended thin-wall circular waveguide
Abstract
The performance of an open-ended circular waveguide with a very sharp cone-shaped flanged termination was measured. These measured results were found to approach those calculated for a semi-infinite open-ended circular waveguide with infinitesimal wall thickness. This analysis is based on Weinstein's (1969) theory (Wiener-Hopf solution) and sufficient accuracy was obtained to compare results with other methods. Measured results are included for a practical model of this type of antenna demonstrating the deterioration of the cross-polarization performance due to the antenna's finite wall thickness. The theoretical and experimental results have shown very good agreement except for the cross-polarization values below -32 dB predicted by theory.
- Publication:
-
IEEE Transactions on Antennas and Propagation
- Pub Date:
- May 1988
- DOI:
- 10.1109/8.192138
- Bibcode:
- 1988ITAP...36..623C
- Keywords:
-
- Antenna Radiation Patterns;
- Circular Waveguides;
- Cross Polarization;
- Thin Walls;
- Anechoic Chambers;
- Reflector Antennas;
- Saddle Points;
- Wave Functions;
- Wiener Hopf Equations;
- Communications and Radar