Title :
Beam scanning characteristics of self-diplexing array antenna
Author :
Toyoda, K. ; Arai, Hiroyuki ; Chiba, I. ; Goto, N.
Author_Institution :
Div. of Electr. & Comput. Eng., Yokohama Nat. Univ., Japan
Abstract :
In mobile satellite communications, a light-weight and low-profile antenna system is required for airplanes. To reduce the weight by using a small-sized diplexer, a self-diplexing antenna (SDA) has already been developed. This antenna can also act as a diplexer in the antenna itself to reduce the weight and the size of the diplexer. In this paper, the isolation characteristics of the self-diplexing array antenna are analyzed and compared with experimental data. The isolation of a self-diplexing array due to beam scanning can be improved by adjusting the relative angle of feed points and substrate permittivity.<>
Keywords :
aircraft communication; antenna feeds; antenna phased arrays; microstrip antenna arrays; mobile antennas; mobile satellite communication; multiplexing equipment; permittivity; scanning antennas; airplanes; beam scanning characteristics; circular microstrip patch; feed points; isolation characteristics; mobile satellite communications; ring patch; self-diplexing array antenna; small-sized diplexer; substrate permittivity; Antenna arrays; Antenna feeds; Frequency; Impedance; Matrix converters; Microstrip antennas; Permittivity; Receiving antennas; Transmission line matrix methods; Transmitting antennas;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1994. AP-S. Digest
Conference_Location :
Seattle, WA, USA
Print_ISBN :
0-7803-2009-3
DOI :
10.1109/APS.1994.407867
