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Radio frequency transmitter, power combiners and wireless communication unit therefor

  • US 9,130,537 B2
  • Filed: 12/26/2013
  • Issued: 09/08/2015
  • Est. Priority Date: 05/30/2013
  • Status: Active Grant
First Claim
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1. A radio frequency (RF) transmitter, comprising:

  • a plurality of power amplifier stages comprising a plurality of paired output terminals, where a pair of output terminals is coupled to a respective amplifier stage;

    a power combining arrangement comprising;

    a plurality of first paired input terminals,a plurality of second input terminals, such that each input of the first paired input terminals is coupled to the same second input terminal; and

    a power transfer circuit operably coupling the second input terminals;

    whereina first pair of cross coupled bond wires operably couples a pair of amplifier stage output terminals with a different second input terminal via terminals of different pairs of the plurality of first paired input terminals of the power combining arrangement; and

    a second pair of cross coupled bond wires overlays the first pair of cross coupled bond wires and operably couples a further pair of amplifier stage output terminals with a different second input terminal via terminals of different pairs of the plurality of first paired input terminals of the power combining arrangement thereby forming a multiple current loop in coupling the plurality of power amplifier stages with the power combining arrangement.

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