CN201838020U - Double-interface SIM (subscriber identity module) card - Google Patents
Double-interface SIM (subscriber identity module) card Download PDFInfo
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- CN201838020U CN201838020U CN2010202739621U CN201020273962U CN201838020U CN 201838020 U CN201838020 U CN 201838020U CN 2010202739621 U CN2010202739621 U CN 2010202739621U CN 201020273962 U CN201020273962 U CN 201020273962U CN 201838020 U CN201838020 U CN 201838020U
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Abstract
The utility model discloses a double-interface SIM (subscriber identity module) card which belongs to the technical field of mobile communication equipment and mobile payment and comprises a card substrate, an intelligent card chip, an SIM card chip and an LTCC (Low Temperature Co-Fired Ceramic) antenna, wherein the intelligent card chip is connected with the SIM card chip and simultaneously is connected with the LTCC antenna by corresponding antenna pins; and the intelligent card chip, the SIM card chip and the LTCC antenna are embedded in the card substrate. For the double-interface SIM card, the embedding and the miniaturization of the antenna are realized by LTCC technology, the working efficiency is 13.56MHz, and the appearance size is the same as that of a current SIM card; and simultaneously, the embedded intelligent card chip and an added PKI (Public Key Infrastructure) certification system ensure the safety of non-contact communication application.
Description
Technical field
The utility model relates to mobile communication equipment and mobile payment technical field, particularly a kind of double-interface SIM card.
Background technology
By up till now, China is existing to surpass 700,000,000 cellphone subscriber.Meanwhile, mobile phone has been not only simple conversation instrument, and it becomes numerous functions multifunctional products such as afflux media player, Digital Video, stored value card just day by day.Wherein, be subjected to increasing attention, and be considered to have wide development space in future with the closely-related mobile-phone payment function of cellphone subscriber.
The mobile payment of China at present also is in the starting stage, and the payment that realizes with the wireless short-distance communication mode based on mobile phone mainly contains several solutions such as NFC (Near Field Communication, wireless near field communication), RF-SIM and double-interface SIM card.But owing to having the technical standard disunity, lacking all extensive commercializations of acquisition as yet of problems such as successful business operation model and mobile phone terminal potential safety hazard.
The NFC scheme is a wireless technology of being united release in recent years by companies such as Nokia, Phillips, basic way is to add the FR module that is used to pay in newly-designed mobile phone, can discern and exchanges data with compatible equipment in short distance, frequency of operation is 13.56MHz.This method can solve better utilizes mobile phone to carry out the problem of radio-frequency (RF) identification, but the user must go to transform existing mobile phone, even buys a brand-new mobile phone, causes the huge waste of social resources.
The another kind of wireless short-distance communication technology: RF-SIM, i.e. radio-frequency (RF) identification SIM card.It realizes the purpose of closely identification and financial payment by internal short-range identification chip in SIM card on mobile phone, frequency of operation is 2.4GHz.But there is following urgent problem in this technology at present:
(1) incompatible with existing international radio frequency standard 13.56MHz, so just need transform arrangement for reading, payment devices that present finance, communal facility adopt, cost is higher;
(2) using the microwave frequency of 2.4GHz to carry out data communication does not have the standard can reference, and there is very big risk in a lot of aspects actual verification of still needing in the application process;
With respect to NFC and two kinds of technology of RF-SIM, the double-interface SIM card scheme is owing to support that the ISO14443A/B standard is the international standard of industry maturation, and not needing to change mobile phone and have certain advantage, is mobile payment solution the most ripe at present and that be most widely used.
The double-interface SIM card scheme refers to replace the inner SIM card of mobile phone with double-interface SIM card, increases the contactless IC card application interface on the basis that keeps former contact interface SIM card function.More typical way has two kinds at present:
(1) the noncontact antenna of contactless IC card is printed on the plastic sheeting, is labelled to the SIM card surface again;
(2) the noncontact antenna of contactless IC card as one independently parts be attached in the mobile phone, antenna is guided to the front or the reverse side of mobile phone, antenna is connected on the still untapped interface of SIM card.
But the shortcoming of above-mentioned two kinds of ways is:
(1) because therefore antenna size decision communication distance carries out Antenna Design and can cause problems such as antenna operating distance weak point on the SIM card substrate, result of use is poor;
(2) antenna is attached to the SIM card surface or is drawn out to mobile phone front or reverse side, is easy to cause a day thread breakage, breaking-up in installation process, the inconvenience that causes the user to use.
The LTCC technology, be that the low-temperature sintered ceramics powder is made the accurate and fine and close green band of thickness, as circuit base material, on the green band, utilize technologies such as laser boring, micropore slip casting, accurate conductor paste printing to make the circuitry needed figure, and a plurality of passive elements are imbedded wherein, overlap together then, at 900 ℃ of sintering, make the passive integrated package of three-dimensional circuit network, also can be made into the three-dimensional circuit substrate of built-in passive element, can mount IC and active device on its surface, make passive/active integrated functional module.Utilize this technology can successfully produce various hi-tech LTCC products.The major advantage of LTCC technology has: (a) in very big frequency range, the loss of signal that the LTCC technology is brought is well below the multilayer line plate technique; (b) owing to the introducing of batch process equipment and technology, the cost of raw material reduces and carries out processing and manufacturing in China, and the cost of LTCC product is significantly reduced; (c) owing to use embedding element rather than wiring board upper surface mount components, module size reduces 20%～40%, and system cost is lower; (d) satisfy in the electronic module material of wireless application RF frequency range requirement, the LTCC material is optimal material.
Continuous development along with radio communication, the integrated level of communication facilities is more and more higher, make its volume more and more littler, high density, good temperature characterisitic and undersized novel electron system become the inexorable trend of electronic system development day by day, this has just proposed challenge to the traditional encapsulation technology of double-interface SIM card, and the existing external huge Anneta module of double-interface SIM card will suffer from eliminating.
On the other hand, along with networks development, activity such as surfing Internet with cell phone, Mobile banking is frequent day by day, safety problem highlights gradually, and existing double-interface SIM card is realized simultaneously and the communication and the non-contact application of mobile phone by a SIM card chip, not only stored important personally identifiable information in the SIM card chip, but also the data that realize non-contact application have been stored simultaneously, in case be subjected to the attack of hacker or virus, information is easy to duplicate and lose, and brings very big potential safety hazard.
The utility model content
Huge in order to solve existing double-interface SIM card antenna volume, the Installation and Debugging difficulty, external being easy to damaged, the uneasy congruent problem of result of use difference and information stores, the utility model provides a kind of double-interface SIM card, by LTCC (Low Temperature Co-fired Ceramic, LTCC) technology integrated RF antenna, be placed on SIM card substrate inside, under the situation of not transforming existing RF reader and mobile phone, realized the contactless close distance radio frequency communication of mobile phone, built-in intelligent card chip has solved the safety problem of double-interface SIM card to a certain extent simultaneously.
The double-interface SIM card that the utility model provides comprises card substrate, intelligent card chip, SIM card chip and LTCC antenna; Described intelligent card chip is connected with the SIM card chip, and simultaneously, described intelligent card chip is connected with the LTCC antenna by a corresponding day wire pin; Described intelligent card chip, SIM card chip and LTCC antenna are embedded in described card substrate inside.
SIM card chip described in the utility model is connected by ISO7816, SPI or I2C interface mode with intelligent card chip.
LTCC antenna described in the utility model is the radio-frequency antenna based on the preparation of LTCC technology.
The apparent size of double-interface SIM card described in the utility model is identical with the apparent size of existing SIM cards of mobile phones.
The frequency of operation of double-interface SIM card described in the utility model is 13.56Mhz.
The mobile communication equipment of double-interface SIM card described in the utility model and outside meets ISO/IEC 7816 standards when carrying out the contact communication.
Compared with prior art, the beneficial effect of technical solutions of the utility model generation is as follows:
1, the utility model adopts LTCC technology integrated RF antenna, realized the miniaturization of antenna, and realized the built-in of double-interface SIM card antenna thus, on the basis that guarantees the radio-frequency (RF) identification performance, external fracture that in installation process, causes of existing double-interface SIM card antenna and breaking-up have been solved, improve the stability of antenna, strengthened the serviceable life of double-interface SIM card; Simultaneously because the employing of this technology, obviously improved double-interface SIM and be stuck in the problem that transmission and received signal decay contactless state under behind mobile devices such as mobile phone;
2, the frequency of operation of the utility model double-interface SIM card is 13.56MHz, meet the ISO14443 standard, with present most of rf terminal compatibilities, need not existing rf terminal is transformed, simultaneously owing to meet the ISO14443 standard, the applied environment comparative maturity is easy to promote, and does not have the application risk;
3, the application of the utility model double-interface SIM card is independent, and contact and contactless communication function are finished by SIM card chip and intelligent card chip respectively, adopt the PKI authentication system simultaneously, have guaranteed the safety of contactless communication;
4,, there is not the problem that existing handset structure is transformed because the utility model just improves the inner structure of existing SIM cards of mobile phones, and profile and size are identical with SIM cards of mobile phones.
Description of drawings
Fig. 1 is the double-interface SIM card inner structure synoptic diagram that the utility model embodiment provides.
Embodiment
Below in conjunction with drawings and Examples, technical solutions of the utility model are further described.
As everyone knows, the length and the wavelength of antenna are directly proportional, and are inversely proportional to frequency, and frequency is high more, and wavelength is short more, and antenna also just can be done shortly more.Existing card frequency of operation with non-contact function generally all is 13.56Mhz, compares with the frequency of operation of 2.46hz, and antenna volume is huge.With existing SIM card is example, international standard is of a size of 25.0mmx15.0mmx1.0mm, if guarantee that frequency of operation still is 13.56Mhz, on the basis that does not change existing size, deduct the outer casing thickness of encapsulation, must make the thickness of antenna be not more than 0.8mm, length is not more than 23.0mm, realizes existing very big difficulty.On the other hand, because the shielding action of battery of mobile phone and circuit board, when existing double-interface SIM card is applied in the communication apparatus such as mobile phone, external signal is significantly decay behind the mobile phone environment, the command signal that causes double-interface SIM card to receive that the external read device sends is very difficult, the signal that the while double-interface SIM card sends also can significantly be decayed behind the mobile phone environment, it is also very difficult that the external read device receives the command signal that double-interface SIM card sends, though this problem is improved by in the SIM card chip, adding modes such as amplifying circuit, but effect is not clearly, and cost is higher.
The utility model embodiment improves existing double-interface SIM card, a kind of novel double-interface SIM card solution has been proposed, by adopting the integrated LTCC antenna of LTCC technology, place SIM card substrate inside, under the situation of not transforming existing contactless smart card read/write device and mobile phone, the double-interface SIM card external antenna size that has solved frequency of operation and be 13.56MHz is big, be easy to problems such as breaking-up, and make aerial signal resist extraneous mobile phone environment interference capability to have obtained tangible improvement, the embedding of intelligent card chip has simultaneously guaranteed the safety and the independence of non-contact application.
Referring to Fig. 1, present embodiment provides a kind of double-interface SIM card, comprises card substrate 100, intelligent card chip (Smart Card) 101, SIM card chip 102 and LTCC antenna 103.Intelligent card chip 101, SIM card chip 102 and LTCC antenna 103 are embedded in card substrate 100 inside.Wherein, intelligent card chip 101 and SIM card chip 102 are connected with the ISO7816 communication modes by IO pin separately, and intelligent card chip 101 is connected with LTCC antenna 103 by two sky wire pins simultaneously.
In the present embodiment, LTCC antenna 103 is the radio-frequency antenna based on the preparation of LTCC technology.The LTCC technology, it is a kind of multi-layer ceramics technology, it can bury passive element substrate inside and simultaneously active component is mounted on substrate surface, has very big dirigibility in design, has really realized the three-dimensional structure that traditional polymer and traditional ceramics material can't obtain.Utilize LTCC to prepare the chip passive integrated devices and module has lot of advantages: the first, stupalith has good high frequency and high quality characteristic; The second, use the high metal material of conductivity as conductor material, help improving the quality factor of Circuits System; The 3rd, can adapt to big electric current and high-temperature stability requirement, and possess than the good heat conductivity of common PCB circuit substrate; The 4th, passive block can be imbedded in the Mulitilayer circuit board, help improving the packing density of circuit; The 5th, have temperature characterisitic preferably, count temperature coefficient as smaller thermal expansivity, less dielectric, can make the high circuit substrate of the number of plies.In addition, the production technology of discontinuous formula allows green sheet is checked, thereby the raising yield rate reduces production costs.
In order to improve the security that double-interface SIM card is used, present embodiment has embedded intelligent card chip 101 in double-interface SIM card inside, finish by SIM card chip 102 and intelligent card chip 101 respectively with the contact communication and the contactless communication of external communications equipment such as mobile phone like this, guaranteed the independence of using.
When the intelligent card chip 101 in the present embodiment and LTCC antenna 103 were operated in contactless communication modes, intelligent card chip 101 was used to receive the signal that 103 transmission of LTCC antenna come, and sends signal to LTCC antenna 103, realizes radio frequency recognition function.Intelligent card chip 101 storage inside application datas in the present embodiment realize various noncontact Secure Application, for example functions such as wallet bankbook, mass transit card; Simultaneously in order further to improve the security of non-contact application, added the PKI authentication system in the intelligent card chip 101, its inside is not only stored be used to realize the various application datas of non-contact application, also store certificate and the key relevant simultaneously with personal identification information, when carrying out communication with the noncontact reader, Transaction Information is carried out encryption, realized user's authentication, improved the security of transaction.
The double-interface SIM card of present embodiment is except that can be used for ripe application such as existing stored value card/bankbook, public transport, also support other multiple application, comprise: meet the rapid payment (QPBOC) of PBOC debt-credit note standard, and the various non-contact application that meet the EMV standard.
At present, the LTCC technology is passive integrated mainstream technology, the integrated assembly of LTCC comprise various base plate carryings or in bury the product of various active or passive component, integrated subassembly product project comprises spare part, substrate and module.Just because of possessing above high temperature tolerance, high thermoconductivity, high moisture-proof, low dielectric loss and good characteristics such as high-frequency and high-Q characteristic, make LTCC be very suitable for material as miniature antenna.And the multilayer technique that LTCC technology is possessed makes the layout of antenna move towards three-dimensional from one dimension, for good process conditions have been created in the miniaturization of antenna.
The utility model makes full use of the above-mentioned characteristic of LTCC technology, and the integrated RF antenna also is built in existing SIM card inside, can be linear with complications, various ways such as shape changeable propeller shape and plane dipole is embedded in the SI M card flexible design.Because the employing of this technology, broken through the size of traditional PCB antenna, make integrated radio-frequency antenna have ultralow section and minimum profile, simultaneously can carry out the system integration and encapsulation with the specific function active circuit better, form modularization, thereby make its SIM card that is used for the 13.56MHz frequency of operation become possibility; Simultaneously because LTCC technology itself, it is minimum to make signal be reduced to by the loss of external environment, need not increase signal amplification circuit and just can guarantee non-contact application in mobile phone; In addition, the LTCC medium substrate can provide effective support to radiating element, has prolonged the life-span of antenna.
By the LTCC The Application of Technology, the double-interface SIM card apparent size of present embodiment is identical with existing SIM cards of mobile phones apparent size, and this LTCC Antenna Anti-jamming ability is strong, has effectively guaranteed the performance of radio-frequency apparatus.Frequency of operation 13.56MHz carries out communication with the contactless smart card read/write device, meets ISO/IEC 14443 communication standards.Double-interface SIM card just can directly place existing mobile phone to use like this, not only can be by the communication function of inner SIM card chip 102 with portable terminals such as realization of contact communication modes and mobile phones, but also can realize radio frequency recognition function, and there is not the problem that existing noncontact reader is transformed by the intelligent card chip 101 of inside and the LTCC antenna 103 that is attached thereto.
In sum, because the employing of LTCC technology has realized the miniaturization of noncontact antenna, make the antenna of noncontact SIM card no longer occupy the mobile phone volume inside, built-in mode makes the more compact structure of antenna simultaneously, external fracture that causes of antenna and breaking-up have been avoided, guaranteed the stability of antenna effectively, prolonged the serviceable life of antenna, in addition, because the employing of LTCC technology makes the antenna radio-frequency enabled obtain effective assurance, built-in intelligent card chip has guaranteed the independence and the safety of non-contact application simultaneously, can realize such as stored value card with reference to existing ISO14443 standard, the application of numerous maturations such as mass transit card, and do not need existing mobile phone and POS terminal are transformed, saved social resources.
Above-described specific embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; institute is understood that; the above only is a specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle, any modification of being made, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (4)
1. a double-interface SIM card is characterized in that: comprise card substrate, intelligent card chip, SIM card chip and LTCC antenna; Described intelligent card chip is connected with the SIM card chip, and simultaneously, described intelligent card chip is connected with the LTCC antenna by a corresponding day wire pin; Described intelligent card chip, SIM card chip and LTCC antenna are embedded in described card substrate inside.
2. double-interface SIM card as claimed in claim 1 is characterized in that, described SIM card chip is connected by ISO7816, SPI or I2C interface mode with intelligent card chip.
3. double-interface SIM card as claimed in claim 1 is characterized in that, described LTCC antenna is the radio-frequency antenna based on the preparation of LTCC technology.
4. double-interface SIM card as claimed in claim 1 is characterized in that, the apparent size of described double-interface SIM card is identical with the apparent size of existing SIM cards of mobile phones.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202739621U CN201838020U (en) | 2010-07-28 | 2010-07-28 | Double-interface SIM (subscriber identity module) card |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202739621U CN201838020U (en) | 2010-07-28 | 2010-07-28 | Double-interface SIM (subscriber identity module) card |
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| CN201838020U true CN201838020U (en) | 2011-05-18 |
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| CN2010202739621U Expired - Lifetime CN201838020U (en) | 2010-07-28 | 2010-07-28 | Double-interface SIM (subscriber identity module) card |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104361390A (en) * | 2014-12-09 | 2015-02-18 | 上海坤锐电子科技有限公司 | SIM (Subscriber Identity Module) card and method for achieving high-frequency mobile payment full-card FDT |
-
2010
- 2010-07-28 CN CN2010202739621U patent/CN201838020U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104361390A (en) * | 2014-12-09 | 2015-02-18 | 上海坤锐电子科技有限公司 | SIM (Subscriber Identity Module) card and method for achieving high-frequency mobile payment full-card FDT |
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