Title :
A two-wire Archimedean spiral antenna with a parasitic loop and a reflector
Author :
Kazama, Y. ; Shirotori, H. ; Suda, T.
Author_Institution :
Japan Radio Co., Ltd., Japan
fDate :
June 28 1993-July 2 1993
Abstract :
A loosely wound spiral antenna with a small number of turns and a reflector is investigated numerically. It is shown that the antenna gain and axial ratio depends on the reflector size, spiral rate of growth, and number of turns. In addition, a spiral antenna with a reflector and parasitic loop is proposed to improve the antenna gain and axial ratio. Improvement of the antenna gain is achieved, while keeping the loop radius the same size as the reflector.<>
Keywords :
antenna radiation patterns; loop antennas; reflector antennas; spiral antennas; wire antennas; antenna gain; axial ratio; parasitic loop; reflector; two-wire Archimedean spiral antenna; Antenna theory; Conductors; Coplanar waveguides; Frequency; Receiving antennas; Reflector antennas; Satellite antennas; Satellite communication; Spirals; Wounds;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1993. AP-S. Digest
Conference_Location :
Ann Arbor, MI, USA
Print_ISBN :
0-7803-1246-5
DOI :
10.1109/APS.1993.385379
