Antenna feed system

Details Antenna feed system Antenna feed system

1998-11-10

2000-04-04

Gensler, Paul

Wave transmission lines and networks

Plural channel systems

Having branched circuits

333 21A, H01P 512, H01P 116

Patent

active

060466553

ABSTRACT:
An antenna feed system provides reception of both circularly polarized signals and linearly polarized signals. An antenna is employed which is dual-circularly polarized and circularly polarized signals received thereby are separated into right and left hand components which are placed in phase quadrature relationship by means of a 90 degree hybrid coupler. Signals received by the antenna which have dual-orthogonal linear polarization are also separated into left and right hand components in quadrature relationship by means of a 90 degree hybrid coupler. A programmable phase shifter is utilized to set the orientation of the linearly polarized reception vector. A fixed delay line and an attenuator are provided for use in balancing the amplitude and phase of the right and left hand components of the linearly polarized signals.

REFERENCES:
patent: 4710734 (1987-12-01), Sterns
patent: 5304999 (1994-04-01), Roberts et al.

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