US 2012/0075148 A1 · NFC Antenna Using Dual Resonance

Abstract

The present invention is disclosed to provide an NFC antenna using dual resonance, wherein a closed circuit is formed by a capacitor and a loop antenna, and a relay unit is attached to a portable wireless terminal that forms a resonance to a predetermined frequency signal mutually transmitted between a portable wireless terminal reader and an NFC chip, and in the course of communicating between the NFC chip and the reader, the relay unit relays a signal transmitted by the reader to an NFC antenna unit, and the NFC chip relays a signal transmitted through the NFC antenna unit to the reader to thereby increase a recognition distance capable of obtaining predetermined information.

Claims12

Dependent claims

An NFC antenna using a dual resonance, comprising:

an NFC antenna unit embedded in a portable wireless terminal, transmitting a signal transmitted by an external reader by communicating with the reader to an NFC chip and transmitting a signal provided by an NFC chip to the reader;
and a relay unit embedded in the portable wireless terminal, relaying a signal transmitted by the reader to the NFC antenna and relaying a signal transmitted through the NFC antenna to the reader.

Dependencies are inferred from the claim text.

Facts

Application

13/376,775Filed 7 Jun 2010

Priority

KR 10-2009-005147510 Jun 2009

Published

29 Mar 2012

Term ends

Not estimatedThe source records don’t support an estimate.

Classification15 codes

H01Q 1/2208
By structural association with other equipment or articles: associated with components used in interrogation type services, i.e. in systems for…
G06K 19/0723
With integrated circuit chips: the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on…
G06K 19/07756
Arrangements for connecting the integrated circuit to the antenna: the connection being non-galvanic, e.g. capacitive
H01Q 1/243
Specially adapted for hand-held use: with built-in antennas

NFC Antenna Using Dual Resonance

Life of this patent

NFC Antenna Using Dual Resonance

Life of this patent

Abstract

Claims12