Multi-antenna scanning diversity system

Details Multi-antenna scanning diversity system Multi-antenna scanning diversity system

1995-11-20

1998-10-20

Urban, Edward F.

Telecommunications

Receiver or analog modulated signal frequency converter

With wave collector

4552781, 455282, H04B 106, H04B 108

Patent

active

058261796

ABSTRACT:
A multi-antenna scanning diversity system uses an antenna diversity circuit adjacent to the antenna terminals, but remote from the receiver, whose input sees the antenna signals (A1) through (AN) and whose output provides a received signal selected by the diversity processor which then goes to the radio receiver via an bidirectional transmission line. The diversity circuit is also fed the radio receiver's IF signal scanned for interference by the diversity processor.
In case of critical interference due to unfavourable reception conditions, the processor generates a switch signal causing another antenna to be selected.
The system uses one common bidirectional transmission to conduct the RF signal from the diversity circuit to the radio receiver and the IF signal from the radio receiver back to the diversity circuit. By a of particular selectivity apparatus the system takes care of preventing the bidirectional transmission signal transfer on the common transmission line to degrade the function of the multi-antenna scanning diversity system.

REFERENCES:
patent: 3798547 (1974-03-01), Reudink
patent: 4592093 (1986-05-01), Ouchi et al.
patent: 5548837 (1996-08-01), Hess et al.

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