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Backscatter interrogators, communication systems and backscatter communication methods

DC
  • US 6,459,726 B1
  • Filed: 04/24/1998
  • Issued: 10/01/2002
  • Est. Priority Date: 04/24/1998
  • Status: Expired due to Term
First Claim
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1. A backscatter interrogator comprising:

  • a data path configured to communicate a data signal;

    a signal generator configured to generate a carrier signal; and

    a modulator coupled with the data path and the signal generator, the modulator being configured to spread the data signal to define a spread data signal and to both amplitude modulate and phase modulate the carrier signal using the spread data signal before communication of the carrier signal.

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