Dynamic bias for receiver controlled by radio link quality

Details Dynamic bias for receiver controlled by radio link quality Dynamic bias for receiver controlled by radio link quality

2005-07-21

2009-10-06

Urban, Edward (Department: 2618)

Telecommunications

Transmitter

Power control, power supply, or bias voltage supply

C455S127300, C455S298000, C455S311000, C455S341000, C455S067110, C330S253000, C330S277000, C330S285000, C330S296000, C330S270000

Reexamination Certificate

active

07599670

ABSTRACT:
DC power savings in a mobile communication device can be achieved by dynamically adjusting the biasing for a receiver based on the communication link quality. The output signal levels of at least one low noise amplifier (LNA) are monitored to identify the DC operating conditions for the LNA. Closed loop control of the DC biasing is adjusted based on a comparison between the monitored DC operating conditions and a reference signal. The output of the LNA is also coupled to a radio receiver section that is configured (e.g., SW or HW) to evaluate the link quality based on various criteria such as inter-modulation distortion, noise, interference, fading, etc. The reference signal that is used to control the DC biasing of the LNA is adjusted (periodically, continuously, or on demand) in response to the evaluated link quality. The dynamic biasing yields acceptable signal reception with low DC power consumption.

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