Title :
Characteristics of dual circularly polarized radial line slot antennas
Author :
Takahashi, M. ; Ando, M. ; Goto, N. ; Suzuki, M. ; Ukazaki, Y. ; Yoshimoto, T. ; Yoshida, Y. ; Numano, Y.
Author_Institution :
Dept. of Electr. & Electron. Eng., Tokyo Inst. of Technol., Japan
Abstract :
The possible design of a dual circularly polarized radial line slot antenna is proposed. The slot design comprising the single- and double-layered RLSA is presented which are simultaneously fed by a double coaxial adapter. Theoretical efficiency is no less than 70%. Experiments confirm these results. The peak efficiency of about 600% is observed in dual polarization for a 0.55m/spl phi/ model prototype antenna. The cross polarization level is about 20dB and DBS band is covered by more than 33.5dBi.<>
Keywords :
antenna travelling wave arrays; direct broadcasting by satellite; electromagnetic wave polarisation; slot antenna arrays; 33.5 dB; DBS band subscriber antennas; characteristics; cross polarization level; design; double coaxial adapter; double-layered RLSA; dual circularly polarized radial line slot antennas; efficiency; single-layered RLSA; slotted waveguide planar array; Apertures; Arrayed waveguide gratings; Frequency; Lighting; Planar arrays; Planar waveguides; Polarization; Printing; Satellite broadcasting; Slot antennas;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1994. AP-S. Digest
Conference_Location :
Seattle, WA, USA
Print_ISBN :
0-7803-2009-3
DOI :
10.1109/APS.1994.407969
