A Wideband CMOS Variable Gain Amplifier With an Exponential Gain Control

  title={A Wideband CMOS Variable Gain Amplifier With an Exponential Gain Control},
  author={Hui Dong Lee and Kyung Ai Lee and Songcheol Hong},
  journal={IEEE Transactions on Microwave Theory and Techniques},
A CMOS wideband cascaded variable gain amplifier (VGA) with a temperature-independent exponential gain control characteristic is presented in this paper. The exponential gain control function is realized using parasitic bipolar transistors and a control signal converter. The bandwidth is extended using an inductive peaking technique for high-frequency operations. The gain of the VGA varies from -38.8 to 55.3 dB in relation to the control voltage that varies from 0 to 1.8 V. The bandwidth of the… CONTINUE READING
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An SiGe BiCMOS transmitter module for IMT2000 applications

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