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Coupler for wireless communications

DC
  • US 6,711,385 B1
  • Filed: 07/06/2000
  • Issued: 03/23/2004
  • Est. Priority Date: 07/06/2000
  • Status: Expired due to Term
First Claim
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1. A communications apparatus for transmitting electric or electromagnetic signals over air, the air having a characteristic impedance, the communications apparatus comprising:

  • a transmitter having an output impedance, said transmitter for transmitting the electric or electromagnetic signals at a preselected frequency; and

    a coupler connected to the transmitter, said coupler comprising a transformer having a non-magnetic core, said transformer communicating the electric or electromagnetic signals to the air, said coupler matching the output impedance of the transmitter to the characteristic impedance of the air.

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