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Transmitter and controlling method thereof

  • US 9,851,816 B2
  • Filed: 11/10/2014
  • Issued: 12/26/2017
  • Est. Priority Date: 11/08/2013
  • Status: Active Grant
First Claim
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1. An active transmitter, comprising:

  • a battery for providing power;

    a first signal source for providing a first frequency group;

    a second signal source for providing a second frequency group, wherein the second signal source is independent from the first signal source, wherein the first signal source and the second signal source are powered by the battery;

    a first element, configured to receive signals with the first frequency group from the first signal source, wherein a first impedance of the first element changes according to a pressure;

    a second element, configured to receive signals with the second frequency group from the second signal source, wherein the second element has a second impedance; and

    a tip section, configured to receive outputs of the first element and the second element and output an electric signal, wherein the tip section is used to receive the pressure;

    wherein the second impedance does not change according to the pressure.

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