Semiconductor circuit for wireless receiving provided with controller circuit for controlling bias current
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United States of America Patent
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Nov 16, 2010
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N/A
app pub date -
Dec 5, 2007
filing date -
Dec 6, 2006
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Abstract
A constant voltage source supplies a bias current to a wireless receiver circuit. A bias current detector circuit detects the bias current, and outputs a detection result to a current controller circuit. The current controller circuit outputs the detection result of the bias current to a memory circuit. The current controller circuit controls the bias current detector circuit to stop operating thereof, and then controls the bias current to decrease when the detected bias current is larger than a predetermined first threshold value and controls the bias current to increase when the detected bias current is smaller than a second threshold value smaller than the first threshold value, based on the detection result stored in the memory circuit.
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