Adaptive receiver system that adjusts to the level of...

Details Adaptive receiver system that adjusts to the level of... Adaptive receiver system that adjusts to the level of...

2005-12-27

2005-12-27

Le, Lana (Department: 2685)

Telecommunications

Receiver or analog modulated signal frequency converter

Frequency modifying or conversion

C455S260000, C455S226100, C455S234100

Reexamination Certificate

active

06980786

ABSTRACT:
Adaptive receiver system that adjusts to the level of interfering signals. An adaptive system is provided for use with a radio receiver to adapt to interfering signals associated with a received RF signal. The radio receiver includes a LNA to receive the RF signal and produce an amplified signal that is coupled to a down-converting mixer that produces a mixer output. A peak detector is coupled to receive the mixer output to produce a peak signal. An integrator is coupled to the peak detector to receive the peak signal and produce an integrated signal and a mixer is coupled to receive the integrated signal and a transmit power indicator to produce a current control signal that is coupled to the LNA. The current control signal is used to control a bias current of the LNA, so that cross modulation associated with the received RF signal is reduced.

REFERENCES:
patent: 5440586 (1995-08-01), Den Braber
patent: 5465406 (1995-11-01), Whitecar et al.
patent: 5548594 (1996-08-01), Nakamura
patent: 5548616 (1996-08-01), Mucke et al.
patent: 6223061 (2001-04-01), Dacus et al.
patent: 6324387 (2001-11-01), Kamgar et al.
patent: 2004/0203548 (2004-10-01), Kim

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