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Separate type expansion card for mobile phones

A separate, expansion card technology, which is applied in the field of radio frequency communication, can solve the problems of inconvenient installation of extended antennas, poor compatibility of card slots on large metal surfaces, etc., and achieve good communication effects, compatibility, use, and ease of use.

Inactive Publication Date: 2012-09-12
上海祯显电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The method of the present invention solves the problem of inconvenient installation of the extended antenna and the poor compatibility of the card slot on the large metal surface according to the current application requirements, and the user can realize the wireless payment function of the mobile phone without changing the mobile phone and the SIM card, allowing the user Easy to use, can make the product more beautiful after modification, good in use and effect, and more in line with practical needs

Method used

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  • Separate type expansion card for mobile phones
  • Separate type expansion card for mobile phones
  • Separate type expansion card for mobile phones

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Embodiment Construction

[0034] The technical solution that has been completed in the market is to process the SIM card into a dual-interface smart card with 8 functional contacts, of which the functions of the 5 contacts VCC, GND, RST, CLK, and I / O are completely different from those of ordinary SIM cards. Similarly, the newly added RF1 and RF2 are connected to the radio frequency signal end of the dual-interface chip. When it is necessary to realize the mobile phone wireless payment function, it is necessary to connect a group of multi-circle radio frequency antennas at both ends of RF1 and RF2. The size of the antenna is relatively large, generally 2 / 3 or even larger than the battery area, to obtain ideal communication distance. When installing, lead out the antenna and set it between the battery and the battery cover, and use absorbing material to isolate the antenna and battery to reduce the impact of the battery on the antenna.

[0035] There are two serious problems in the above scheme: first,...

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Abstract

The invention provides a separate type expansion card for mobile phones, which comprises a double-ended management card and a big and small double-end radio frequency signal transfer amplifier. The separate type expansion card is characterized in that two groups of contacts, a group of radio frequency antennas and a double-interface chip are arranged on the double-ended management card; a small-end antenna, a big-end antenna, a capacitor and wave-absorbing material are arranged on the big and small double-end radio frequency signal transfer amplifier; and the mounting structure is simplified by the separate type scheme, so that an ordinary SIM (Subscriber Identity Module) card can carry out the payment function of a mobile phone. The method is particularly suitable for the field of wireless payment of mobile phones, and has the advantages of stable signal transceiving, full compatibility with conventional devices and the like.

Description

technical field [0001] The invention relates to the field of radio frequency communication, in particular to a separate expansion card for a mobile phone. Background technique [0002] The application of smart cards and electronic tags is gradually affecting people's living habits and consumption patterns. The comprehensive application of the bus card in the subway, bus, taxi and other fields has greatly facilitated people's micropayment methods, and is highly praised by the majority of users. Mobile phones are the most commonly used communication products today. The small amount wireless payment function of mobile phones can make users realize payment more conveniently, effectively and securely. [0003] Many companies at home and abroad have initially realized the application by using various methods. The products that have been tested in China are roughly as follows: [0004] Use mobile phones with NFC function to directly realize the small amount wireless payment func...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04M1/02H04B1/38G06K19/077H04B1/3816H04B1/3827
Inventor 陆红梅
Owner 上海祯显电子科技有限公司
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