Multifunction ultra-high frequency circuit and means using such

Details Multifunction ultra-high frequency circuit and means using such Multifunction ultra-high frequency circuit and means using such

1983-01-06

1986-01-21

Blum, Theodore M.

Telecommunications

Transmitter and receiver at same station

With a common signal processing stage

455327, 455330, H04B 140

Patent

active

045661324

ABSTRACT:
A multifunction ultra-high frequency circuit and bidirectional transmission means using such a circuit. The circuit according to the invention comprises a directional coupler, two diodes, a transistor and an access connected to the diodes. The state of the transistor defines several functions of the circuit: modulation, mixing and transmission-reception separation. Application to half-duplex transmission.

REFERENCES:
patent: 3328694 (1967-06-01), Brady et al.
patent: 3636453 (1972-01-01), George
patent: 3867699 (1975-02-01), Stoffer
patent: 4163232 (1979-07-01), Fitzsimmons
patent: 4301432 (1981-11-01), Carlson et al.
patent: 4353127 (1982-10-01), Richardson
Japanese Abstract, vol. 1, No. 21, 25.3.1977, p. 835 (E76).
Japanese Abstract, vol. 2, No. 124, 18.10.1978, p. 7350 (E78).

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