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CONTROL OF SWITCHER REGULATED POWER AMPLIFIER MODULES

  • US 20070291718A1
  • Filed: 06/14/2007
  • Published: 12/20/2007
  • Est. Priority Date: 06/14/2006
  • Status: Active Grant
First Claim
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1. A transmitter for a wireless communications device, wherein the transmitter comprises:

  • a power amplification block comprising;

    a pre-amplifier configured to amplify a transmission signal to produce a pre-amplified transmission signal; and

    a power amplifier coupled to the pre-amplifier and configured to amplify the pre-amplified transmission signal to produce an amplified transmission signal;

    a detector coupled to the output of the pre-amplifier and configured to provide a detected pre-amp output signal; and

    a power management block comprising;

    a switching regulator control block configured to generate a switching supply control signal based on the detected pre-amp output signal; and

    a switched mode power supply coupled to the switching regulator control block and configured to generate a supply voltage signal based on the switching supply control signal and provide the supply voltage signal to the power amplifier.

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