A wide-band low-sidelobe disc-o-cone antenna
Abstract
The design description and the electrical characteristics of a combined horn/cigar antenna are presented. The antenna design consists of a disk-on-rod (cigar) housed in a conical horn with a relatively large flare angle. The combined antenna configuration provides broad-band gain and pattern characteristics with peak sidelobe levels of approximately 30 dB, and the operation of this antenna is similar to that of a helicone antenna. However, the use of the disk-on-rod provides flexibility for designing low-sidebar antennas by varying the spacing between the disks. In addition, variable-polarization operation can be achieved through the appropriate design of the feed or launcher. The measured voltage standing-wave ratio characteristics of the individual dipoles (linear polarization) are determined and the pattern characteristics are presented. This antenna was designed for possible application to the global positioning system.
- Publication:
-
IEEE Transactions on Antennas and Propagation
- Pub Date:
- January 1983
- DOI:
- 10.1109/TAP.1983.1143008
- Bibcode:
- 1983ITAP...31..183W
- Keywords:
-
- Antenna Design;
- Broadband;
- Horn Antennas;
- Sidelobes;
- Global Positioning System;
- Power Gain;
- Standing Wave Ratios;
- Communications and Radar