Title :
A Single-Layered Radial Line Slot Antenna for DBS Reception
Author :
Ando, M. ; Takahashi, M. ; Natori, M. ; Takada, J. ; Goto, N.
Author_Institution :
Department of Electrical and Electronic Engineering, Tokyo Institute of Technology, Ohokayama, Meguro, Tokyo 152, Japan
Abstract :
A radial line slot antenna(RLSA) is a commercial high efficiency planar array. Double-layered lines have contributed to realize uniform aperture illumination and to reduce terminated loss power. This paper newly proposes a single-layered RLSA which is much simpler in structure. Two novel techniques are applied; firstly, slot lengths are varied to synthesize aperture Illumination and secondly, a matching spiral reduces reflection and radiates the residual power in circular polarization. The gain of 35.4dBi, efficiency of 65% are measured for a prototype RLSA.
Keywords :
Apertures; Gain measurement; Lighting; Planar arrays; Polarization; Prototypes; Reflection; Satellite broadcasting; Slot antennas; Spirals;
Conference_Titel :
Microwave Conference, 1990. 20th European
Conference_Location :
Budapest, Hungary
DOI :
10.1109/EUMA.1990.336287
