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Automatic bias control circuit for linear power amplifiers

  • US 20070001766A1
  • Filed: 06/29/2005
  • Published: 01/04/2007
  • Est. Priority Date: 06/29/2005
  • Status: Active Grant
First Claim
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1. An amplification module comprising:

  • a power amplifier configured to receive an RF input signal and provide an RF output signal;

    an autobias control circuit configured to receive and convert said RF output signal to a control signal;

    a bias circuit coupling said control signal to a bias input of said power amplifier;

    wherein said control signal causes said power amplifier to have a quiescent current that increases substantially linearly in response to an increase in RF output power of said RF output signal.

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