Title :
Dual-spiral slot array antenna fed by triplate transmission line
Author :
Hirose, K. ; Nakano, H.
Author_Institution :
Coll. of Eng., Hosei Univ., Tokyo, Japan
Abstract :
The fundamental radiation characteristics of a dual-spiral slot (DSS) fed by a triplate transmission line (microstrip) are presented. The triplate transmission line reduces the antenna thickness. The DSS radiates a circularly polarized wave over a wide range coverage around the Z-axis. An array using 32 DSSs attains a 5% bandwidth for a -14 dB return loss criterion. A DSS array antenna was constructed and tested in the 12 GHz band.<>
Keywords :
antenna feeders; antenna radiation patterns; microwave antenna arrays; strip lines; waveguide antennas; -14 dB; 12 GHz; SHF; antenna array; antenna thickness; bandwidth; circularly polarized wave; dual-spiral slot; microstrip line; radiation characteristics; return loss; triplate transmission line; Antenna arrays; Antenna radiation patterns; Decision support systems; Microstrip antenna arrays; Polarization; Propagation losses; Slot antennas; Spirals; Transmission line antennas; Transmission lines;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1990. AP-S. Merging Technologies for the 90's. Digest.
Conference_Location :
Dallas, TX, USA
DOI :
10.1109/APS.1990.115474
