A 94.5 GHz variable beamwidth zoned lens monopulse antenna
Abstract
The design of a zoned lens monopulse antenna with a nominal half-power beamwidth (HPBW) of 1.0 degree is described. A lens defocusing mechanism provided a beamwidth broadening factor of approximately 3:1 before the effects of beam bifurcation occurred. Employing a high efficiency singly refracting teflon lens, no surface matching was required. Equal E- and H-plane beamwidths were achieved by a unique 4-horn monopulse feed which incorporated quarter wave linear chokes to suppress E-plane induced ground plane currents. The design criteria for the feed and antenna, and final antenna performance data are presented.
- Publication:
-
13th Asilomar Conference on Circuits, Systems, and Computers
- Pub Date:
- 1980
- Bibcode:
- 1980ieee.conf...65K
- Keywords:
-
- Antenna Design;
- Antenna Radiation Patterns;
- Lens Antennas;
- Microwave Antennas;
- Monopulse Antennas;
- Antenna Feeds;
- Bandwidth;
- Light Beams;
- Thermal Blooming;
- Electronics and Electrical Engineering