Title :
An improvement in electrical characteristics of a short backfire antenna
Author :
Ohmori, Shingo ; Miura, Shuichi ; Kameyama, Knonobu ; Yoshimura, Hiromitsu
Author_Institution :
Ministry of Posts and Telecommunications, Tokyo, Japan
fDate :
7/1/1983 12:00:00 AM
Abstract :
A short backfire (SBF) antenna is considered to be a favorable option for a compact and high efficiency shipboard antenna in maritime satellite communications. Though the SBF antenna has many attractive characteristics, it has a demerit of narrow frequency bandwidths because of its leaky cavity operation in principle. The electrical characteristics of a conventional SBF antenna have been improved by changing its main reflector from a flat disk to a conical plane and by adding a second small reflector. Frequency bandwidths of 20 percent for VSWR´s under 1.5 can be obtained by the improved SBF antenna.
Keywords :
Backfire arrays; Marine-vehicle antennas; Reflector antennas; Satellite communication, earth terminals; UHF antennas; Antennas and propagation; Bandwidth; Electric variables; Frequency; Impedance; L-band; Reflector antennas; Satellite antennas; Satellite communication; Strontium;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.1983.1143099
