Wireless receiver without AGC

Details Wireless receiver without AGC Wireless receiver without AGC

2007-11-27

2007-11-27

Vuong, Quochien B. (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

Plural receivers

C455S138000, C455S194200

Reexamination Certificate

active

10501108

ABSTRACT:
A wireless communication unit (300) incorporates a receiver comprising radio frequency circuitry (210, 220, 230, 240) for receiving a radio frequency signal and converting the radio frequency signal to a low frequency signal. A signal level adjustment circuit receives the low frequency signal and an analogue to digital converter (370), operably coupled to the signal level adjustment circuit receives an adjusted low frequency signal and providing a digital received signal. A signal processor (108) operably coupled to the analogue to digital converter (370) processes the digital received signal. The signal level adjustment circuit includes a low frequency amplifier (360) whose gain is arranged to be dependent upon a clip point of the analogue to digital converter (370).

REFERENCES:
patent: 3311894 (1967-03-01), Chudleigh, Jr.
patent: 4114115 (1978-09-01), Minnis
patent: 4887299 (1989-12-01), Cummins et al.
patent: 5903835 (1999-05-01), Dent
patent: 6005506 (1999-12-01), Bazarjani et al.
patent: 6069923 (2000-05-01), Ostman et al.
patent: 6229375 (2001-05-01), Koen
patent: WO 96/08878 (1996-03-01), None

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