Amplifiers – With control of power supply or bias voltage – With control of input electrode or gain control electrode bias
Reexamination Certificate
2005-10-18
2005-10-18
Nguyen, Simon (Department: 2685)
Amplifiers
With control of power supply or bias voltage
With control of input electrode or gain control electrode bias
C455S127200, C455S234100, C375S345000
Reexamination Certificate
active
06956432
ABSTRACT:
A first control unit reads out both specific frequencies and gain data corresponding to these specific frequencies, which have been stored into a first storage unit, and approximates gain data corresponding to an arbitrary frequency by way of a linear function to calculate the gain data by executing a formula. A D/A converter converts this gain data into a gain control signal, and supplies the gain control signal to a variable gain amplifier. The variable gain amplifier amplifies a transmission signal by a gain defined in response to a transmission frequency based upon the gain control signal.
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Kobayashi Eisuke
Yamada Kazuhide
Yamaguchi Seiichi
Matsushita Electric - Industrial Co., Ltd.
Nguyen Simon
Pearne & Gordon LLP
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