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1. (WO2009127158) SIGNAL ENHANCER CHIP FOR RADIO FREQUENCY IDENTIFICATION SYSTEM AND SIGNAL ENHANCER

Pub. No.:    WO/2009/127158    International Application No.:    PCT/CN2009/071326
Publication Date: Oct 22, 2009 International Filing Date: Apr 17, 2009
IPC: G06K 19/07
Applicants: SHANGHAI QUANRAY ELECTRONICS CO., LTD
上海坤锐电子科技有限公司
JIN, Kewei
金可威
Inventors: JIN, Kewei
金可威
Title: SIGNAL ENHANCER CHIP FOR RADIO FREQUENCY IDENTIFICATION SYSTEM AND SIGNAL ENHANCER
Abstract:
A signal enhancer chip for radio frequency identification system and a signal enhancer. The signal enhancer chip includes: a receiving circuit, a sending circuit and a power supply module, the receiving circuit comprising a demodulation amplification module and a digital quantizing module, the sending circuit comprising a logic control module and a modulation module. The demodulation amplification module is for amplifying and demodulating the received communication signal sent by the dual-interface SIM card, the digital quantizing module is for converting the analog communication signal output from the demodulation amplification module to the digital communication signal, the logic control module is for processing the digital communication signal output from the digital quantizing module and generating the subsidiary carrier wave  signal necessary for returning to the reader , the modulation module is for generating the communication signal to be sent according to the subsidiary carrier wave signal. The signal enhancer and chip, as the trunking device between the dual-interface SIM card and the reader, can enhance the responsion signal of the dual-interface SIM card and ensure the normal communication between the dual-interface SIM card and the reader.