Title :
Effects of adding a small disk to a spiral antenna backed by a conducting plane reflector
Author :
Nakano, H. ; Soga, H. ; Honma, T. ; Yamauchi, J.
Author_Institution :
Coll. of Eng., Hosei Univ., Tokyo, Japan
fDate :
8/1/1991 12:00:00 AM
Abstract :
A small conducting disk is added to a spiral backed a plane reflector to extend the frequency range over which the spiral radiates a circularly polarised wave (CPW). The numerical analysis based on the moment method reveals that the frequency range for CPW radiation is extended to 1:1.42 (34.7%) with the small disk, from 1:1.18 (16.5%) without the small disk
Keywords :
antenna radiation patterns; antenna reflectors; current distribution; microwave antennas; 6 to 8 GHz; circularly polarised wave; conducting plane reflector; current distribution; frequency range; moment method; numerical analysis; small conducting disk; spiral antenna;
Journal_Title :
Microwaves, Antennas and Propagation, IEE Proceedings H
