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RF power amplifier with linearity control

  • US 9,088,258 B2
  • Filed: 05/07/2010
  • Issued: 07/21/2015
  • Est. Priority Date: 01/14/2008
  • Status: Active Grant
First Claim
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1. A single chip amplifier circuit comprising:

  • a single chip consisting of;

    a multi-stage power amplifier configured to amplify an input signal to produce an output signal;

    a sensing circuit configured to detect adjacent-channel leakage (ACL) of the output signal and to produce a sensing signal; and

    a linearity control circuit configured to control the multi-stage power amplifier to reduce ACL in the output signal in response to the sensing signal.

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