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TRANSCEIVERS FOR NEAR FIELD COMMUNICATION, NEAR FIELD COMMUNICATION DEVICES, AND ELECTRONIC SYSTEMS HAVING THE SAME

  • US 20150365139A1
  • Filed: 03/04/2015
  • Published: 12/17/2015
  • Est. Priority Date: 06/13/2014
  • Status: Active Grant
First Claim
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1. A transceiver for near field communication (NFC), the transceiver comprising:

  • a resonance circuit coupled between a first node and a second node, the resonance circuit having a resonance frequency and being configured to emit an electromagnetic wave to communicate data with an external device;

    a first capacitor coupled between the first node and a third node;

    a second capacitor coupled between the second node and a fourth node; and

    a filter coupled among a first transmission electrode, a second transmission electrode, the third node, and the fourth node in an asymmetrical structure to provide a first frequency response and a second frequency response to the first transmission electrode and the second transmission electrode, respectively, the first frequency response being different from the second frequency response, the filter being configured to receive the data through the first transmission electrode and the second transmission electrode.

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