Title :
U-shaped slots for circularly polarized slotted waveguide array
Author :
Kyeong-Sik Min ; Hirokawa, J. ; Ando, M. ; Goto, N.
Author_Institution :
Dept. of Electr. & Electron. Eng., Tokyo Inst. of Technol., Japan
Abstract :
An experiment for a circularly polarized radiator composed of two slots and a U-shaped slot pair is performed. This radiator can be excited by either a traveling or a standing wave. The measured axial ratio is about 1 dB in the main beam direction. A good axial ratio extending over wide angle is realized by controlling the spacing between the two U-shaped slots. The measured values of the radiator for circular polarization agree well with prediction. The full wave analysis is necessary for future practical design.
Keywords :
antenna radiation patterns; electromagnetic wave polarisation; mobile satellite communication; satellite antennas; slot antenna arrays; U-shaped slots; axial ratio; circularly polarized slotted waveguide array; full wave analysis; main beam direction; spacing; standing wave; traveling wave; Antenna measurements; Antenna radiation patterns; Dipole antennas; Magnetic fields; Pattern analysis; Polarization; Satellite broadcasting; Satellite ground stations; Slot antennas; Waveguide theory;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1995. AP-S. Digest
Conference_Location :
Newport Beach, CA, USA
Print_ISBN :
0-7803-2719-5
DOI :
10.1109/APS.1995.530845
