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Design method of non-contact type IC card

A non-contact, design method technology, applied in the field of smart cards, can solve the problems of high cost, complex processing technology, difficulty in ensuring antenna inductance, etc., and achieve the effect of small working field strength and large load modulation

Active Publication Date: 2013-11-27
BEIJING WATCH DATA SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method is costly and complex, and the application of non-contact IC may be limited
[0005] In addition, due to design limitations, the number of antenna turns can only be kept small, and it is difficult to guarantee the inductance of the antenna necessary for normal operation.

Method used

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  • Design method of non-contact type IC card
  • Design method of non-contact type IC card
  • Design method of non-contact type IC card

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Embodiment Construction

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0022] It should be noted that, in the embodiment of the present invention, the non-contact IC card refers to all integrated circuit cards with antennas working in a non-contact manner, such as: a CPU card with a CPU module, a logic encryption card without a CPU module (such as Mifare, Felick) and so on.

[0023] According to the existing technology, the working principle of the non-contact IC card is: after the non-contact IC card enters the radio frequency f...

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Abstract

The invention discloses a non-contact IC card and a design method thereof and an antenna structure, relates to the technical field of smart cards, and aims to reduce the minimum working field strength required by the non-contact IC card. The non-contact IC card comprises an antenna module and an IC card module connected with the antenna module; and auxiliary capacitors are connected in parallel at two ends of the antenna module. Therefore, the invention reduces the minimum working field strength required by the non-contact IC card.

Description

technical field [0001] The invention relates to the technical field of smart cards, in particular to a non-contact IC card, a design method thereof, and an antenna structure. Background technique [0002] Smart cards, also known as IC cards, generally come in two types: contact IC cards and contactless IC cards. Wherein, the contact type IC card obtains energy and performs data exchange through mechanical contacts; the non-contact type IC card is also called radio frequency card, obtains energy and performs data exchange through antenna coil induction. According to the ISO / IEC14443 protocol, the area of ​​the standard ID-1 non-contact IC card is 85.6mm*53.98mm, and it can work normally under the field strength of 1.5A / M-7.5A / M. [0003] As the fields of application of contactless IC cards continue to expand, user demands for miniaturization of contactless IC cards have increased. At present, the miniaturization of the antenna of the non-contact IC card is generally achieve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K19/07H01Q7/00H01Q23/00
Inventor 韩静张雁
Owner BEIJING WATCH DATA SYST