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Radio frequency power amplifier and method thereof

  • US 9,964,985 B1
  • Filed: 04/07/2017
  • Issued: 05/08/2018
  • Est. Priority Date: 04/07/2017
  • Status: Active Grant
First Claim
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1. An apparatus comprising:

  • a first coupling network configured to receive an input voltage and output a first gate voltage and a second gate voltage at a first gate node and a second gate node, respectively;

    a stacked complementary common-source amplifier pair including a first common-source amplifier and a second common-source amplifier configured to receive the first gate voltage and the second gate voltage and output a first drain voltage and a second drain voltage at a first drain node and a second drain node, respectively;

    a second coupling network configured to provide a coupling between the first drain node and the second drain node to equalize the first drain voltage and the second drain voltage;

    a first inductor configured to couple the first drain node to a first DC node;

    a second inductor configured to couple the second drain node to a second DC node;

    a third inductor configured to be inductively coupled with the first inductor; and

    a fourth inductor configured to be inductively coupled with the second inductor; and

    an output combiner configured to output an output voltage in accordance with a combination of a voltage of the third inductor and a voltage of the fourth inductor.

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