Patent ID: 9641227
Date: 2017-05-02
CPC Classifications: H04B

Claim:
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 comprising a first terminal coupled to the third node, a second terminal coupled to the fourth node, a third terminal a coupled to a first transmission electrode, and a fourth terminal coupled to a second transmission electrode 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; wherein the filter further comprises: wherein an inductance of the first inductor is greater than an inductance of the second inductor.