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PROTECTION CIRCUIT FOR RADIO FREQUENCY POWER AMPLIFIER

  • US 20110292554A1
  • Filed: 05/24/2011
  • Published: 12/01/2011
  • Est. Priority Date: 05/26/2010
  • Status: Active Grant
First Claim
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1. A circuit comprising:

  • a transmission line configured to transmit a radio frequency (RF) signal;

    a primary power transistor having a base coupled with the transmission line, wherein the primary power transistor is configured to amplify the RF signal; and

    a protection circuit coupled with the transmission line and configured to detect an overdrive or overvoltage condition and to reduce a current or voltage at the power amplifier based on a detection of the overdrive or overvoltage condition.

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