Mobile communication apparatus operable in different formats and

Details Mobile communication apparatus operable in different formats and Mobile communication apparatus operable in different formats and

1997-02-10

2000-07-25

Hunter, Daniel S.

Telecommunications

Transmitter and receiver at same station

455266, 4551801, 4551891, 455339, H04B 138, H04B 106

Patent

active

060945648

ABSTRACT:
A radio communication apparatus is designed for a plurality of different radio communication formats, one of which can be selected. The radio communication apparatus includes a fixed-gain IF amplifier and a variable-gain IF amplifier. One is selected out of the fixed-gain IF amplifier and the variable-gain IF amplifier as an effectively used IF amplifier in response to which of the radio communication formats is selected. The fixed-gain IF amplifier is selected as an effectively used IF amplifier when a narrow-band radio communication format is selected. The variable-gain IF amplifier is selected as an effectively used IF amplifier when a wide-band radio communication format is selected.

REFERENCES:
patent: 5010400 (1991-04-01), Oto
patent: 5499394 (1996-03-01), Kaatz et al.
patent: 5584063 (1996-12-01), Brinkhaus
patent: 5602847 (1997-02-01), Pagano et al.
patent: 5732337 (1998-03-01), Wargnier et al.
patent: 5796772 (1998-08-01), Smith et al.

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