Duplex-transmitter receiver arrangement

Multiplex communications – Wide area network – Packet switching

Patent

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Details

375 7, H04B 140

Patent

active

042120136

ABSTRACT:
A duplex-transmitter-receiver arrangement wherein only a single oscillator is utilized for the transmitter and receiver for a digitally modulated radio communication system wherein each location has a transmitter and receiver and a single oscillator is used for both the transmitter and receiver with a circulator switch connected respectively to the antenna, the receiver and the transmitter with the oscillator in the transmitter coupling through to the branch for the receiver so as to serve as a mixing frequency for the receiver.

REFERENCES:
patent: 2939139 (1960-05-01), Handler
patent: 3426279 (1969-02-01), Berman
patent: 4134068 (1979-01-01), Richardson

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