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Homodyne radio architecture for direct sequence spread spectrum data reception

  • US 5,495,500 A
  • Filed: 08/09/1994
  • Issued: 02/27/1996
  • Est. Priority Date: 08/09/1994
  • Status: Expired due to Term
First Claim
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1. A direct sequence spread spectrum radio system, comprising:

  • an input RF amplifier for receiving and amplifying a carrier signal, fO, modulated by a digital code sequence;

    a local oscillator providing a signal having a frequency equal to the frequency of the carrier signal, fO ;

    a first mixer receiving said modulated carrier signal and said local oscillator signal and generating a corresponding baseband output signal;

    a second mixer receiving said local oscillator signal and a baseband input signal modulated by said digital code sequence and generating a corresponding output signal; and

    an output RF amplifier for amplifying and transmitting said output signal.

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