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CIRCUITS AND METHODS FOR COMBINING SIGNAL POWER

  • US 20100297968A1
  • Filed: 05/19/2010
  • Published: 11/25/2010
  • Est. Priority Date: 05/19/2009
  • Status: Active Grant
First Claim
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1. An apparatus comprising:

  • a plurality of power amplifiers, each power amplifier having an input and an output;

    a plurality of first transmission lines, wherein the output of each of the plurality of power amplifiers is electrically coupled to a different one or more of the first transmission lines;

    a central conductive region, the central conductive region having a node coupled to an antenna terminal; and

    a plurality of second transmission lines, wherein each of the second transmission lines is coupled to a different output of the plurality of power amplifiers through respective first transmission lines, wherein each of the second transmission lines includes an end electrically coupled to the central conductive region,wherein each power amplifier receives an input signal and produces an output signal, and wherein the output signals of the plurality of power amplifiers are magnetically coupled from the first transmission lines to the second transmission lines and added at the node of the central conductive region.

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