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Predistortion control for power reduction

  • US 6,591,090 B1
  • Filed: 05/24/1999
  • Issued: 07/08/2003
  • Est. Priority Date: 05/27/1998
  • Status: Expired due to Term
First Claim
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1. A transmitter comprising:

  • amplifier means for amplifying a received signal;

    digital predistortion means for predistorting the received signal prior to the signal passing through said amplifier means;

    transmitting means for transmitting said signal;

    control means for controlling said transmitter, whereby if the power level of the signal to be transmitted by the transmitter means is below a predetermined level, the signal is not predistorted by said digital predistortion means and if the power level of the signal to be transmitted by the transmitter means is above a predetermined level said received signal passes through said digital predistortion means and said amplifier means; and

    digital gain control means for applying a gain to the signal prior to the signal being input to the digital predistortion means;

    whereby said digital control means is used to control the power of the signal to be transmitted.

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