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US 7,024,158 B2Granted
Broadband communication satellite
AssigneeNorthrop Grumman Corporation
InventorEric R. Wiswell
Life of this patent
Estimating the term…
Abstract
A satellite system is provided that includes a receive antenna system to receive one of C-band and/or Ku-band signals and a transmit antenna system to transmit one of C-band and/or Ku-band signals. A payload section may be coupled between the receive antenna system and the transmit antenna system. The satellite system may provide broadband communications at C-band and/or Ku-band.
Claims15
A satellite system comprising:
- a receive antenna system to receive one of C-band and Ku-band signals;
- a transmit antenna system to transmit one of C-band and Ku-band signals;
- and
- a payload section coupled between said receive antenna system and said transmit antenna system and comprising a digital transponder operative to route digital sub-channels from the receive antenna system to the transmit antenna system, the digital transponder comprising a channelizer module operative to divide a plurality of user channels of a baseband input signal into about 250 sub-channels, each sub-channel comprising a bandwidth of about 0.5 MHz, and a recombiner module operative to combine the sub-channels into a plurality of downlink output channels, each downlink output channel comprising a bandwidth of about 125 MHz.
1 more element
A method of communication by satellite comprising:
- transmitting signals to receive antennas on a satellite, said signals being at one of C-band frequencies and Ku-band frequencies;
- routing digital sub-channels corresponding to said received signals from said receive antennas to transmit antennas via a digital transponder payload,
- dividing a plurality of user channels of a baseband input signal via a channelizer module into about 250 sub-channels, each sub-channel comprising a bandwidth of about 0.5 MHz,
- combining the sub-channels into a plurality of downlink output channels via a recombiner module, each downlink output channel comprising a bandwidth of about 125 MHz;
- and
- transmitting signals at one of C-band frequencies and Ku-band frequencies from said transmit antennas.
3 more elements
Dependencies are inferred from the claim text.