Combiner for diversity receiving systems

Details Combiner for diversity receiving systems Combiner for diversity receiving systems

1964-12-01

1976-10-12

Martin, John C.

H04B 106

Patent

active

039861244

ABSTRACT:
A diversity combiner for RF signal receiving systems of the type in which a plurality of identical or substantially identical receivers each obtains an input signal from a different antenna location in response to receipt of a common RF wave and provides an audio output signal derived from the input signal and further provides a DC control signal related to noise characteristics on the incoming signal. The combiner includes a plurality of transistorized differential amplifier channels, and a plurality of transistorized summing amplifier channels connected respectively to the differential amplifier channels. The DC control signals from the various receivers are applied respectively to the differential amplifier channels, which in turn control the conductivity of the summing amplifier channels and the extent to which respective audio signals from the receivers applied to the latter channels are passed by those channels for combination into a single output signal.

REFERENCES:
patent: 2835799 (1958-05-01), Day
patent: 2947861 (1960-08-01), Ulstad et al.
patent: 3296532 (1967-01-01), Robinson
patent: 3305781 (1967-02-01), Robinson

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