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Suspended carrier modulation of high-Q transmitters

  • US 5,697,076 A
  • Filed: 05/01/1995
  • Issued: 12/09/1997
  • Est. Priority Date: 05/01/1995
  • Status: Expired due to Fees
First Claim
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1. In a high-Q resonant circuit transmitter, the improvement comprising:

  • control means for on-off modulation of a transmitter coil current whereby said transmitter coil current is substantially instantaneously interrupted at a zero-crossing of said transmitter coil current; and

    switching means having conducting and non-conducting states, said control means causing said switching means to switch between said conducting state and said non-conducting state in synchronization with said zero-crossings of said transmitter coil current.

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