Reception circuit for cellular telephone

Details Reception circuit for cellular telephone Reception circuit for cellular telephone

1998-04-13

2000-10-31

Hunter, Daniel S.

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

455217, 330 52, H04B 116

Patent

active

061415618

ABSTRACT:
A reception circuit for a cellular telephone according to the present invention shares the use of a code division multiple access system and a frequency division multiple access system, comprises: an amplifier circuit at the forefront stage; a bypass circuit connected to the amplifier circuit at the forefront in parallel therewith, having lower gain than the amplifier circuit at the forefront stage; and a common processing circuit connected to the latter stages of the amplifier circuit at the forefront and the bypass circuit, and when the level of a received signal is not higher than predetermined voltage, induces the received signal to the processing circuit through the amplifier circuit at the forefront while when the level of the received signal exceeds the predetermined voltage, the received signal is induced to the processing circuit through the bypass circuit.

REFERENCES:
patent: 5230096 (1993-07-01), Davies et al.
patent: 5513386 (1996-04-01), Ogino et al.
patent: 5617240 (1997-04-01), Hergault et al.
patent: 5678214 (1997-10-01), Azuma
patent: 5722063 (1998-02-01), Peterzell et al.
patent: 5963087 (1999-10-01), Anderson
patent: 5963855 (1999-10-01), Lussenhp et al.

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