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Multiple input single output device with vector signal and bias signal inputs

  • US 9,768,733 B2
  • Filed: 05/02/2014
  • Issued: 09/19/2017
  • Est. Priority Date: 10/22/2004
  • Status: Active Grant
First Claim
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1. An apparatus comprising:

  • a vector modulation circuit configured to generate a plurality of substantially constant envelope signals based on a frequency reference signal;

    an autobias circuit configured to generate a plurality of bias control signals;

    a plurality of multiple input single output (MISO) devices, each MISO device configured to receive an associated one of the plurality of substantially constant envelope signals and an associated one of the plurality of bias control signals and generate a MISO output signal based on the associated one of the plurality of substantially constant envelope signals and the associated one of the bias control signals;

    a plurality of vector power amplifiers that receive, as a vector power amplifier input signal, the MISO output signal from an associated MISO device, each vector power amplifier generating a power amplifier output based on the received MISO output signal from the associated MISO device; and

    a plurality of conducting wires, each conducting wire associated with one of the plurality of vector power amplifiers, each conducting wire transmitting the power amplifier output generated by the associated vector power amplifier,wherein at least two of the plurality of conducting wires are coupled together, thereby summing the power amplifier output being transmitted on each of the conducting wires to produce a summed output signal.

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