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Digital payload with variable high power amplifiers

  • US 10,312,995 B2
  • Filed: 12/10/2015
  • Issued: 06/04/2019
  • Est. Priority Date: 12/11/2014
  • Status: Active Grant
First Claim
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1. A spacecraft, comprisinga payload subsystem including a plurality of transmit antenna feeds, a digital channelizer, and a power amplification arrangement including a plurality of power amplifiers, the plurality of power amplifiers including at least one power amplifier having a commandably variable saturated power, the power amplification arrangement having at least one input communicatively coupled with an output of the digital channelizer and at least one output communicatively coupled with at least one of the plurality of transmit antenna feeds;

  • anda processor configured to control the digital channelizer so as to allocate a commandable amount of bandwidth to each of a plurality of receive and/or transmit beams, and dynamically make an adjustment to the variable saturated power of the at least one power amplifier of the plurality of power amplifiers in the power amplification arrangement;

    whereinthe adjustment is tailored to account for a change in operating power of the at least one amplifier resulting from a change in bandwidth allocated by the digital channelizer to an individual beam associated with the at least one power amplifier.

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