Title :
A two-beam slotted leaky waveguide array for mobile reception of dual-polarization DBS
Author :
Sakakibara, Kunio ; Kimura, Yuichi ; Hirokawa, Jiro ; Ando, Makoto ; Goto, Naohisa
Author_Institution :
Toyota Central Res. & Dev. Labs. Inc., Tokyo, Japan
fDate :
1/1/1999 12:00:00 AM
Abstract :
A two-beam slotted leaky waveguide array for mobile reception of dual-polarization direct broadcast from satellite (DBS) is realized in a single-layer structure. Two feed waveguides attached at both ends of cross-slotted radiating waveguides excite the leaky waves propagating in opposite directions. Each of them radiates either of two circularly polarized waves in symmetrical beam directions. Balanced design of two beams for each polarization imposes symmetry in the array design of slots. The slot coupling distribution is optimized for the maximum gain under this symmetry condition. A model antenna in about a 300-mm square is fabricated for experiments in the 12-GHz band. Antenna efficiency of 71% and 64% is obtained for each beam in different polarizations
Keywords :
antenna feeds; antenna radiation patterns; direct broadcasting by satellite; electromagnetic wave polarisation; leaky wave antennas; mobile antennas; multibeam antennas; receiving antennas; slot antenna arrays; 12 GHz; 64 percent; 71 percent; SHF; antenna efficiency; array design; balanced design; circularly polarized waves; cross-slotted radiating waveguides; direct broadcast from satellite; dual-polarization DBS; experiments; feed waveguides; leaky waves propagation; maximum gain; mobile reception; model antenna; single-layer structure; slot coupling distribution; symmetrical beam directions; two-beam slotted leaky waveguide array; Antenna arrays; Antennas and propagation; Feeds; Polarization; Receiving antennas; Satellite antennas; Satellite broadcasting; Slot antennas; Vehicles; Waveguide junctions;
Journal_Title :
Vehicular Technology, IEEE Transactions on
