Title :
Research prototype of a multi-aperture coupler for mode diversity
Author_Institution :
Bell Commun. Res., Red Bank, NJ, USA
Abstract :
A multiaperture mode-diversity coupler built to operate in the A-band (26.5-40.0 GHz) is described. It can separate the horizontally polarized higher-order mode from the feed waveguide of a horn reflector antenna. This type of coupler can be used to provide diversity protection to microwave radio links. Measurements show that this coupler adequately separates the higher-order horizontal mode and does not affect propagation of the vertical polarized signals; therefore, it can be used in links where both polarizations are employed. This coupler can be retrofitted to existing horn antennas. Unlike other pattern diversity schemes it does not degrade the sidelobe performance
Keywords :
antenna accessories; directional couplers; directive antennas; diversity reception; microwave links; reflector antennas; 26.5 to 40.0 GHz; A-band; EHF; SHF; directional couplers; diversity protection; feed waveguide; horizontally polarized higher-order mode; horn reflector antenna; measurements; microwave radio links; mode diversity; mode-diversity coupler; multiaperture coupler; sidelobe performance; vertical polarized signals; Antenna feeds; Antenna measurements; Antennas and propagation; Horn antennas; Microwave propagation; Polarization; Protection; Prototypes; Radio link; Reflector antennas;
Conference_Titel :
Communications, 1990. ICC '90, Including Supercomm Technical Sessions. SUPERCOMM/ICC '90. Conference Record., IEEE International Conference on
Conference_Location :
Atlanta, GA
DOI :
10.1109/ICC.1990.117258
