A 360-degree scanning antenna with cylindrical array of slotted waveguides
Abstract
A 360 degree scanning antenna is disclosed which includes a mechanism for scanning the main beam of a cylindrical array in azimuth and over a limited angle in elevation in which a primary feedhorn illuminates a geodesic lens which in turn illuminates the cylindrical array structure. Energy is coupled from the parallel plate structure of the feedhorn assembly into the individual waveguides of the array via dielectric wedges extending from the waveguides. Scanning in elevation is accompanied by changing the transmitter frequency and in azimuth by rotating the primary feedhorn assembly.
- Publication:
-
Patent Department of the Navy
- Pub Date:
- July 1984
- Bibcode:
- 1984navy.reptU....B
- Keywords:
-
- Antenna Arrays;
- Antenna Design;
- Cylindrical Antennas;
- Scanning;
- Slot Antennas;
- Waveguides;
- Antenna Feeds;
- Constraints;
- Cylindrical Bodies;
- Dielectrics;
- Elevation Angle;
- Frequencies;
- Lenses;
- Parallel Plates;
- Patents;
- Slots;
- Transmitters;
- Wedges;
- Communications and Radar