Title :
A slot coupling control in circularly-polarized radial line slot antennas
Author :
Takada, Jun-ichi ; Ando, Makoto ; Goto, Naohisa
Author_Institution :
Dept. of Electr. & Electron. Eng., Tokyo Inst. of Technol., Japan
Abstract :
The authors predict the gain performance for a CP-RLSA (circularly polarized radial line slot antenna) with reduced slot coupling and propose a basic design for slot coupling control (SCC). When the CP-RLSA can be used near the resonant frequency with weak coupling, the bandwidth becomes 1.5 times as wide as that of an antenna without SCC. SCC for this purpose is possible by the determination of the slot coupling angle. The proposed design was verified experimentally.<>
Keywords :
antenna theory; electromagnetic wave polarisation; waveguide antennas; bandwidth; circularly-polarized radial line slot antennas; gain performance; reduced slot coupling; resonant frequency; slot coupling angle; slot coupling control; Apertures; Arrayed waveguide gratings; Couplings; Phased arrays; Planar arrays; Polarization; Receiving antennas; Resonance; Resonant frequency; Slot antennas;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1989. AP-S. Digest
Conference_Location :
San Jose, CA, USA
DOI :
10.1109/APS.1989.134993
