Unlock instant, AI-driven research and patent intelligence for your innovation.

Dual-interface SIM card

A dual-interface, card-based technology, applied to record carriers used in machines, instruments, computer components, etc., to achieve the effects of enhancing service life, ensuring safety, and being easy to promote

Inactive Publication Date: 2010-11-24
BEIJING HUADA ZHIBAO ELECTRONICS SYST
View PDF2 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] In order to solve the problems of existing dual-interface SIM card antennas, such as bulky volume, difficult installation and debugging, easy damage to external devices, poor use effect, and unsafe information storage, the present invention provides a dual-interface SIM card through LTCC (Low Temperature Co- fired Ceramic (low temperature co-fired ceramics) technology integrates the RF antenna and places it inside the SIM card substrate. Without modifying the existing RF reader and mobile phone, the non-contact short-range RF communication of the mobile phone is realized. At the same time, the built-in The smart card chip solves the security problem of the dual-interface SIM card to a certain extent

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Dual-interface SIM card
  • Dual-interface SIM card
  • Dual-interface SIM card

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0035] As we all know, the length of the antenna is proportional to the wavelength and inversely proportional to the frequency. The higher the frequency, the shorter the wavelength, and the shorter the antenna can be made. The working frequency of existing cards with non-contact function is generally 13.56Mhz, and compared with the working frequency of 2.4Ghz, the antenna is bulky. Taking the existing SIM card as an example, the international standard size is 25.0mmx15.0mmx1.0mm. If the operating frequency is still 13.56Mhz, without changing the existing size and subtracting the thickness of the package, the antenna must be The thickness is not greater than 0.8mm, and the length is not greater than 23.0mm, which is very difficult to realize. On the other hand, due to the shielding effect of the mobile phone battery and the ci...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a dual-interface SIM card and belongs to the technical fields of mobile terminal equipment and mobile payment. The dual-interface SIM card comprises a card substrate, an intelligent card chip, an SIM card chip and an LTCC antenna. The intelligent card chip is connected with the SIM card chip and is connected with the LTCC antenna through a corresponding antenna pin simultaneously; and the intelligent card chip, the SIM card chip and the LTCC antenna are embedded into the card substrate. The provided dual-interface SIM card realizes the embeddation and miniaturization of the antenna through the LTCC technology, has the working frequency of 13.56 MHz, and has the same dimension as the conventional SIM card. Meanwhile, the built-in intelligent card chip and the added PKI authentication system guarantee the safety of non-contact type communication application.

Description

technical field [0001] The invention relates to the technical field of mobile communication equipment and mobile payment, in particular to a dual-interface SIM card. Background technique [0002] Up to now, my country has more than 700 million mobile phone users. At the same time, the mobile phone is no longer just a simple communication tool, it is increasingly becoming a multifunctional product that integrates many functions such as streaming media player, digital video camera, and electronic wallet. Among them, the mobile payment function, which is closely related to mobile phone users, is receiving more and more attention, and is considered to have a broad development space in the future. [0003] At present, my country's mobile payment is still in its infancy. The payment based on mobile phone wireless short-distance communication mainly includes several solutions such as NFC (Near Field Communication, short-distance wireless communication), RF-SIM and dual-interface S...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G06K19/18
Inventor 夏皓如广忠海华燕翔张超李德亮陈良
Owner BEIJING HUADA ZHIBAO ELECTRONICS SYST