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SD (secure digital memory) card and RFID (radio frequency identification) system comprising same

A technology of radio frequency antenna and card substrate, applied in the field of radio frequency identification system, can solve the problems of low radio frequency, large size of the antenna, not in line with the development trend of miniaturization of mobile devices, etc. Effect

Active Publication Date: 2012-11-28
KUANG CHI INST OF ADVANCED TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the low radio frequency of mobile payment, in the current technical solution, the traditional antenna design will lead to a large antenna size, which does not meet the development trend of miniaturization of mobile devices

Method used

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  • SD (secure digital memory) card and RFID (radio frequency identification) system comprising same
  • SD (secure digital memory) card and RFID (radio frequency identification) system comprising same
  • SD (secure digital memory) card and RFID (radio frequency identification) system comprising same

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Embodiment Construction

[0030] The technical solution of the present invention will be further described below with reference to the drawings and embodiments.

[0031] Figure 7 Shown is a schematic diagram of the structure of the SD card of the present invention. Figure 7 Among them, the SD card includes a card substrate 100, a controller 101, a smart card chip 102, a memory 103, and a metamaterial radio frequency antenna 104 disposed on one surface of the card substrate 100. Wherein, the smart card chip 102 and the memory 103 are respectively connected to the controller 101, and the smart card chip 102 is connected to the metamaterial radio frequency antenna 104 through corresponding antenna pins. The controller 101 is used to identify the operation of the SD card by the external device. The smart card chip 102 can receive the signal transmitted by the metamaterial radio frequency antenna 104, and send its own application data information to the metamaterial radio frequency in the form of electrical s...

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Abstract

The invention provides an SD (secure digital memory) card. The SD card comprises a controller, a smart card chip, a memory and a metamaterial RF (radio frequency) antenna, wherein the smart card chip and the memory are respectively connected with the controller; the metamaterial RF antenna is connected with the smart card chip and comprises a dielectric substrate, a first metal sheet and a second metal sheet; the first and second metal sheets are adhered to the two opposite surfaces of the dielectric substrate; a first feeder is arranged around the first metal sheet; a second feeder is arranged around the second metal sheet; the first and second feeders are respectively fed into the first and second metal sheets by way of coupling; a first microgroove structure and a second microgroove structure are formed on the first and second metal sheets respectively; and the first feeder is electrically connected with the second feeder. The SD card has the following beneficial effects: due to adoption of the metamaterial RF antenna easy to miniaturize, the SD card can realize such functions as mobile payment, without being limited by operators, and is beneficial to cost saving and large scale application.

Description

Technical field [0001] The present invention relates to the field of wireless communication, in particular to an SD card and a radio frequency identification system with the SD card. Background technique [0002] With economic development and rapid changes in information technology, my country has more than 700 million users of mobile devices, such as mobile phones, PDAs, and tablet computers. Adding payment functions to mobile devices can reduce the inconvenience of people carrying their wallets and make people enjoy the convenience of payment anytime, anywhere. Therefore, mobile payment has received more and more attention and has a broad business development space in the foreseeable future . [0003] Currently, mobile payment devices that have been developed include RFID-SIM cards, namely radio frequency identification SIM cards. It realizes the functions of short-distance identification and financial payment on the mobile phone through the built-in short-distance recognition ...

Claims

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Application Information

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IPC IPC(8): G06K19/077G06K7/00
Inventor 刘若鹏徐冠雄
Owner KUANG CHI INST OF ADVANCED TECH
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