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Systems and methods for controlling output power in a communication device

  • US 6,710,651 B2
  • Filed: 10/22/2001
  • Issued: 03/23/2004
  • Est. Priority Date: 10/22/2001
  • Status: Expired due to Fees
First Claim
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1. A power control circuit comprising a bi-directional coupler detector configured to couple the power control circuit with a transmission line and to sense a forward power level and a reflected power level in the transmission line, the power control circuit configured to:

  • determine the amount of transmit signal power being radiated by an antenna interfaced with the transmission line;

    determine if the radiated signal power exceeds a first threshold;

    if the radiated signal power does exceed the first threshold, then decrease a transmit signal power level;

    determine if the radiated signal power exceeds a second threshold; and

    if the radiated signal power does exceed the second threshold, then decrease the transmit signal power level.

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