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DYNAMIC DEVICE SWITCHING (DDS) OF AN IN-PHASE RF PA STAGE AND A QUADRATURE-PHASE RF PA STAGE

  • US 20120044022A1
  • Filed: 11/03/2011
  • Published: 02/23/2012
  • Est. Priority Date: 04/20/2010
  • Status: Active Grant
First Claim
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1. Circuitry comprising:

  • an in-phase radio frequency (RF) power amplifier (PA) stage comprising a first plurality of arrays of amplifying transistor elements and adapted to bias at least one of the first plurality of arrays based on a plurality of array bias signals, such that the plurality of array bias signals is based on a selected one of a plurality of dynamic device switching (DDS) operating modes; and

    a quadrature-phase RF PA stage comprising a second plurality of arrays of amplifying transistor elements and adapted to bias at least one of the second plurality of arrays based on the plurality of array bias signals,wherein each of the plurality of array bias signals is a current signal.

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