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Beamforming RF circuit and applications thereof

  • US 8,120,532 B2
  • Filed: 03/26/2010
  • Issued: 02/21/2012
  • Est. Priority Date: 03/10/2006
  • Status: Expired due to Fees
First Claim
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1. A radio frequency integrated circuit (RFIC) comprises:

  • an adjust module configured to adjust coordinates of an outbound RF signal to produce a plurality of RF signal components based on a beamforming factor, wherein the adjust module comprises, for each of the plurality of RF signal components;

    a first gain stage to amplify an I component of the outbound RF signal in accordance with a first gain value to produce a gained I component;

    a second gain stage to amplify a Q component of the outbound RF signal in accordance with a second gain value to produce a gained Q component; and

    an adder operably coupled to add the gained I component and the gained Q component to produce a corresponding one of the plurality of RF signal components, wherein the first and second gain values are based on the beamforming factor; and

    a plurality of power amplifiers configured to amplify the plurality of RF signal components output by the adjust module to produce a plurality of amplified RF signal components, wherein one or more of the plurality of power amplifiers have different gain settings based on the beamforming factor, and wherein the plurality of power amplifiers provide the plurality of amplified RF signal components to a plurality of antennas that transmit the plurality of amplified RF signal components.

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