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SIM card chip with radio frequency identification function

A technology of radio frequency identification and function, which is applied in the field of mobile communication and can solve problems such as poor communication quality

Inactive Publication Date: 2009-10-21
SHANGHAI QUANRAY ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The invention solves the problem of poor communication quality between the dual-interface SIM card and the reader when the prior art dual-interface SIM card is applied to the mobile phone environment

Method used

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  • SIM card chip with radio frequency identification function
  • SIM card chip with radio frequency identification function
  • SIM card chip with radio frequency identification function

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Embodiment Construction

[0032] The SIM chip with radio frequency identification function of the present invention comprises radio frequency interface unit, CPU, interrupt processor, random number generator, ROM, EEPROM, external RAM, cyclic redundancy check module, clock module, ISO / IEC7816 module and power supply pin , reset pin, clock pin, first antenna pin, second antenna pin, IO pin, spare pin, ground pin.

[0033] When the dual-interface SIM card including the SIM chip with radio frequency identification function of the present invention is used in the RFID field, the non-contact part of the communication complies with the ISO / IEC 14443 standard, ISO / IEC 15693 standard or IS011784 / IS011785 standard.

[0034] combine Figure 3a and Figure 3b As shown, the non-contact antenna 11 of the dual-interface SIM card is directly embedded in the SIM card base 13, the SIM card chip 12 is in the same plane as the non-contact antenna 11, and the two ends of the non-contact antenna 11 are respectively Conne...

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PUM

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Abstract

The invention discloses an SIM card chip with the radio frequency identification function, at least comprising a radio frequency interface unit. The radio frequency interface unit at least comprises a receiving and amplifying circuit, a demodulation circuit, a modulation circuit and a transmitting power amplifying circuit, wherein the receiving and amplifying circuit is used for amplifying communication signals obtained by a mobile phone and transmitting the communication signals to the demodulation circuit; the demodulation circuit is used for demodulating the communication signals which are amplified by the receiving and amplifying circuit; the modulation circuit is used for modulating the communication signals to be sent by the mobile phone; and the transmitting power amplifying circuit is used for amplifying the communication signals which are modulated by the modulation circuit. The SIM card chip with the radio frequency identification function can improve the condition that the communication effect between the mobile phone and a reader is influenced by the shielding of a battery and a circuit board of the mobile phone.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a SIM card chip with radio frequency identification function. Background technique [0002] After more than ten years of development, radio frequency identification technology (Radio Frequency Identification, hereinafter referred to as RFID) technology, including contactless integrated circuit card (Integrated Circuit Card, referred to as IC card), has penetrated into every corner of modern life and is widely used in Public transportation, access control, small electronic payment and other fields. Radio frequency identification technology is a kind of automatic identification technology. The composition of radio frequency identification system generally includes at least two parts: (1) electronic tag, the English name is Tag; (2) reader, the English name is Reader, which is generally stored in the electronic tag There is electronic data in an agreed format. In practical appli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K19/07G06K7/00H04M1/725H04W88/02H04M1/72403
CPCH04W88/02G06K19/0723
Inventor 金可威
Owner SHANGHAI QUANRAY ELECTRONICS
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