Invention Grant
US08212615B2 Variable-gain amplifier circuit and wireless communication device integrated circuit equipped therewith 有权
可变增益放大器电路和配备其的无线通信设备集成电路

Variable-gain amplifier circuit and wireless communication device integrated circuit equipped therewith
Abstract:
There is disclosed a variable-gain amplifier circuit that operates on a low voltage, exhibits low distortion, provides a wide range of variation, and is suitable for use in a low-power-consumption wireless communication system. The variable-gain amplifier circuit is configured so that a variable-load circuit, which includes three reactance function elements and provides a wide range of impedance variation, is connected to a conductor circuit whose output terminal generates a positive-phase output current proportional to conductance with respect to an input voltage.
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