A broad-band constant beamwidth corrugated rectangular horn
Abstract
Aperture field theory is used to predict far field radiation from a rectangular horn having substantially constant E- and H-plane beamwidths of 17 and 10 deg, respectively, and designed for operation over a 2.4:1 bandwidth. Assuming a cosine aperture field distribution in both planes, an aperture phase error of 0.37 wavelengths at the lowest operating frequency produces the least beamwidth variation. A general design curve showing 'constant' beamwidth as a function of horn throat length is presented for the design of horns with beamwidths in the 9-27 deg range. To realize the specified beamwidths, a compound horn configuration is adopted and experimentally tested.
- Publication:
-
IEEE Transactions on Antennas and Propagation
- Pub Date:
- September 1982
- DOI:
- 10.1109/TAP.1982.1142888
- Bibcode:
- 1982ITAP...30..966M
- Keywords:
-
- Antenna Design;
- Antenna Radiation Patterns;
- Far Fields;
- Horn Antennas;
- Wideband Communication;
- Beams (Radiation);
- Corrugating;
- Performance Tests;
- Phase Error;
- Rectangles;
- Communications and Radar