Pulse or digital communications – Receivers – Automatic gain control
Reexamination Certificate
2008-04-08
2008-04-08
Phu, Phuong (Department: 2611)
Pulse or digital communications
Receivers
Automatic gain control
C375S297000, C375S296000, C330S052000, C330S279000
Reexamination Certificate
active
07356102
ABSTRACT:
Systems and methods are provided for controlling gain compensation over temperature and frequency variations. A variable amplifier may be used to receive a control signal and an input signal. The variable amplifier may be operable to apply a gain to the input signal to generate an output signal, wherein the gain is a function of the control signal. A summation module may be used to combine a gain reference signal and a gain variation signal to generate the control signal. The gain reference signal may be calibrated at a reference temperature and a reference frequency. A gain calibration module may be used to output the gain variation signal as a function of both a current operating temperature and a current operating frequency.
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Jiao Qing Zhong
Jin Xin
Morton Steven P.
Jones Day
Liang Robert C.
Pathiyal Krishna K.
Phu Phuong
Research In Motion Limited
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