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Modular wireless fixed network for wide-area metering data collection and meter module apparatus

  • US 7,009,530 B2
  • Filed: 09/13/2001
  • Issued: 03/07/2006
  • Est. Priority Date: 09/13/2001
  • Status: Expired due to Term
First Claim
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1. A low cost Binary Phase Shift Keying (BPSK) RF signal modulator, implemented on a four-layer PCB, providing high performance at a very low cost compared to microwave monolithic integrated circuit (MMIC) BPSK modulators, said modulator having means switched to provide one of:

  • an in-phase output signal, and an inverted-phase output signal and power dividing means at the input and output of said means switched to provide one of;

    an in-phase output signal, and an inverted-phase output signal.

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