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Mobile communication satellite payload

  • US 5,623,269 A
  • Filed: 02/02/1995
  • Issued: 04/22/1997
  • Est. Priority Date: 05/07/1993
  • Status: Expired due to Fees
First Claim
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1. A satellite payload for use with a communication system, the payload comprising:

  • a phased array receiving antenna assembly having n receiver elements for receiving RF signals within a first band of frequencies;

    first beam forming means comprising power divider means and having an input coupled to each of said n receiver elements for forming m uplink beams from RF signals received by said phased array receiving antenna assembly, wherein n is greater than one, and wherein m is less than n;

    ground station communication means, having an input coupled an output of said first beam forming means, for converting said m uplink beams into RF signals within a second band of frequencies and for transmitting RF signals to and for receiving RF signals from a ground station, the transmitted and received RF signals being within said second band of frequencies;

    second beam forming means comprising power combining means and having an input coupled to an output of said ground station communication means for forming m downlink beams from the RF signals received from said ground station, said m downlink beams being formed within a third band of frequencies; and

    a phased array transmitting antenna assembly having n transmitter elements for transmitting said m downlink beams as RF signals within said third band of frequencies, each of said n transmitter elements having a power amplifier means associated therewith, each of said power amplifier means having an input coupled to an output of said second beam forming means and an output coupled to one of said transmitter elements, wherein each of said n transmitter elements transmits RF energy for each of said m downlink beams.

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