Mobile terminal device for telecommunications, including a switc

Details Mobile terminal device for telecommunications, including a switc Mobile terminal device for telecommunications, including a switc

1995-12-21

1997-11-18

Vo, Nguyen T.

Telecommunications

Transmitter and receiver at same station

With transmitter-receiver switching or interaction prevention

455 82, 333103, H04B 144

Patent

active

056898185

ABSTRACT:
A mobile terminal device for telecommunications includes a switch circuit which comprises two field effect transistors connected in series to an input terminal, an output terminal and a common input/output terminal respectively, for AC signals. The switch circuit includes control devices which are cyclically shifted for the two transistors. The control devices are formed by pulsed multiplexed bias voltages of amplifiers which produce and receive the AC signals, and by a logic OR-circuit of diodes and resistor. The voltages on the terminals of the diodes are connected between the gate and source of the transistors for their cyclically time-shifted control.

REFERENCES:
patent: 4399557 (1983-08-01), Muszkiewizz
patent: 4677688 (1987-06-01), Yoshihara et al.
patent: 4810911 (1989-03-01), Noguchi
patent: 5548239 (1996-08-01), Kohama

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