Telecommunications – Receiver or analog modulated signal frequency converter – Local control of receiver operation
Reexamination Certificate
2006-04-19
2008-12-23
Phu, Sanh D (Department: 2618)
Telecommunications
Receiver or analog modulated signal frequency converter
Local control of receiver operation
C455S321000, C455S333000, C455S341000, C330S285000, C330S296000, C330S140000, C330S302000
Reexamination Certificate
active
07469133
ABSTRACT:
RF power detector employing an envelope amplifier circuit and a current mirror circuit. The output of the current mirror circuit supplies a bias voltage for biasing the output of the envelope amplifier circuit. Furthermore, the output of the envelope amplifier circuit is fed back to the output of the current mirror circuit so as to reduce the magnitude of the bias signal according to the magnitude of the amplified RF signal envelope. In this manner, the overall gain of the RF power detector can be selectively reduced, resulting in an RF power detector having a more linearized dynamic range and greater ability to compensate for variation in gain caused by temperature.
REFERENCES:
patent: 4167681 (1979-09-01), Wolkstein et al.
patent: 6690237 (2004-02-01), Miyazawa
patent: 7071783 (2006-07-01), Ichitsubo et al.
patent: 2007/0030064 (2007-02-01), Yu
DLA Piper (LLP) US
Phu Sanh D
Silicon Storage Technology, Inc.
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