A compact, aperture-matched, balanced transmission line antenna
Abstract
A novel balanced transmission line antenna where the maximum separation between the two conductors is only a fraction of a wavelength at the lowest operating frequency is described. The balanced transmission line is formed by exponentially extending the ridges of a double-ridged waveguide. The poor VSWR and patterns caused by reflections from the tips of the ridge extensions are improved by a combination of aperture matching and the use of microwave absorber. Measured VSWR, radiation pattern and gain data are presented for this compact, broadband antenna over the 2 to 11 GHz frequency range.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- 1983
- Bibcode:
- 1983STIN...8524196B
- Keywords:
-
- Antenna Design;
- Broadband;
- Transmission Lines;
- Transmitters;
- Directional Antennas;
- Horn Antennas;
- Performance Tests;
- Waveguide Antennas;
- Communications and Radar