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Method and apparatus for real time multiplexing with transmitter and antenna array elements

  • US 10,050,680 B2
  • Filed: 09/24/2010
  • Issued: 08/14/2018
  • Est. Priority Date: 06/07/2010
  • Status: Active Grant
First Claim
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1. A method for beamforming using a plurality of antennas, the method comprising:

  • receiving a plurality of digital input signals representing beamforming data to be transmitted on the plurality of antennas, the digital input signals comprising data samples;

    interpolating the data samples to determine for each of the digital input signals, sample values at particular corresponding offset times;

    multiplexing the digital input signals by selecting, one at a time, each of the digital input signals to output a multiplexed digital signal;

    converting the multiplexed digital signal into a first multiplexed analog signal;

    upconverting the first multiplexed analog signal to a second multiplexed analog signal at an output frequency;

    demultiplexing the second multiplexed analog signal to provide a plurality of analog output signals; and

    coupling, one at a time, each of the plurality of analog output signals to a corresponding one of the plurality of antennas for transmission;

    wherein the interpolating is configured such that the offset times are determined to account for the multiplexing of the digital input signals, the demultiplexing of the second multiplexed analog signal, and the coupling of the plurality of analog output signals to the plurality of antennas.

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