CN202134031U - SD (Secure Digital) card and radio frequency identification system thereof - Google Patents
SD (Secure Digital) card and radio frequency identification system thereof Download PDFInfo
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- CN202134031U CN202134031U CN201120217235U CN201120217235U CN202134031U CN 202134031 U CN202134031 U CN 202134031U CN 201120217235 U CN201120217235 U CN 201120217235U CN 201120217235 U CN201120217235 U CN 201120217235U CN 202134031 U CN202134031 U CN 202134031U
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- sheet metal
- frequency antenna
- radiation sheet
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Abstract
The utility model provides an SD card, which comprises a controller, an intelligent card chip, a memory and a meta-material radio frequency antenna, wherein the intelligent card chip and the memory are respectively connected with the controller, the meta-material radio frequency antenna is connected with the intelligent card chip, the meta-material radio frequency antenna comprises a medium substrate, the medium substrate is provided with a first surface and a second surface that are opposite, the first surface of the medium substrate is provided with a radiation metal sheet and a feed line surrounding the radiation metal sheet, and the radiation metal sheet is provided with a microflute structure. The SD card employs the meta-material radio frequency antenna that is easy to miniaturize, can realize functions such as mobile payment and the like without the restriction of operators, and is in favor of cost saving and large scale application.
Description
Technical field
The utility model relates to wireless communication field, particularly a kind of SD card and have the radio-frequency recognition system of this SD card.
Background technology
Along with the variation with rapid changepl. never-ending changes and improvements of expanding economy and infotech, China has movable equipment, and for example the user of mobile phone, PDA, panel computer etc. surpasses 700,000,000.In movable equipment, adding payment function can reduce the inconvenience that people carry one's purse along and make people enjoy the convenient of payment whenever and wherever possible; Therefore; Mobile payment receives increasing attention, and in a foreseeable future has wide business development space.
The mobile payment device that has developed at present has the RFID-SIM card, i.e. the RF identification SIM.It realizes the function of closely identification and financial payment on mobile phone through internal short-range identification chip in SIM.Yet this type of RF identification SIM is subject to telecom operators, and only can be applied to have on the mobile device of call function.
The SD card is widely used as the memory card of all kinds of mobile devices.Use the SD card to realize that closely identification and financial payment function just can break away from the restriction of telecom operators.Yet because the rf frequency of mobile payment is lower, in the therefore present technical scheme, will cause antenna volume bigger, not meet the development trend of mobile device miniaturization according to the traditional antenna design proposal.
The utility model content
The utility model technical matters to be solved is, to the above-mentioned deficiency of prior art, proposes a kind of SD card, and this SD card is integrated with the ultra material radio-frequency antenna of miniaturization.
The utility model solves the problems of the technologies described above the technical scheme that is adopted and provides a kind of SD card; Comprise controller, intelligent card chip, storer and ultra material radio-frequency antenna; Said intelligent card chip is connected with said controller respectively with said storer; Said ultra material radio-frequency antenna is connected with said intelligent card chip, and said ultra material radio-frequency antenna comprises medium substrate, and said medium substrate has opposite first and second surface; The feeder line that the first surface of said medium substrate is provided with radiation sheet metal and is provided with around radiation sheet metal, said radiation sheet metal is formed with micro groove structure.
In the utility model, the second surface of said medium substrate is provided with grounded metal sheet, and said grounded metal sheet is electrically connected with radiation sheet metal.
In the utility model, said grounded metal sheet is electrically connected through plated-through hole with radiation sheet metal.
In the utility model, said micro groove structure comprise complementary split ring resonator structure, complementary helix structure, opening helical ring structure, two opening helical ring structure, complementary folding line structure and through several kinds of structures in front derive, compound or a micro groove structure that the group battle array obtains.
In the utility model, pass through capacitive coupling scheme feed between said radiation sheet metal and the feeder line.
In the utility model, said SD card also comprises card substrate, and said controller, intelligent card chip and storer are arranged on the side surface of card substrate.
In the utility model, said ultra material radio-frequency antenna is arranged on the side surface of card substrate.
In the utility model, said ultra material radio-frequency antenna is arranged on the inside of card substrate.
In the utility model, said micro groove structure through etching, bore quarter, photoetching, electronics is carved or ion is carved and is formed on the said radiation sheet metal.
According to the SD card of the utility model, employing be the ultra material radio-frequency antenna that is easy to miniaturization, can not need be subject to operator, realize functions such as mobile payment, and need not increase impedance matching network that the saving that helps cost is used with large-scale.
The utility model also provides a kind of radio-frequency recognition system in addition, comprises reader and transponder, and said transponder is above-mentioned SD card.
Description of drawings
Fig. 1 is the ultra material radio-frequency antenna structural representation of the utility model;
Fig. 2 a is the synoptic diagram of complementary split ring resonator structure;
Fig. 2 b is depicted as the synoptic diagram of complementary helix structure;
Fig. 2 c is depicted as the synoptic diagram of opening helical ring structure;
Fig. 2 d is depicted as the synoptic diagram of two opening helical ring structures;
Fig. 2 e is depicted as the synoptic diagram of complementary folding line structure;
Fig. 3 a is the synoptic diagram of deriving of complementary its geometric configuration of split ring resonator structure shown in Fig. 2 a;
Fig. 3 b is the synoptic diagram of deriving of complementary its expansion of split ring resonator structure shown in Fig. 2 a;
Fig. 4 a is the structural representation behind the complementary split ring resonator structure shown in three Fig. 2 a compound;
Fig. 4 b is the compound synoptic diagram that the complementary split ring resonator structure shown in two Fig. 2 a and Fig. 5 b are depicted as complementary helix structure;
Fig. 5 is the structural representation after the complementary split ring resonator structural group battle array shown in four Fig. 2 a;
Shown in Figure 6 is the structural representation of the utility model SD card.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model technical scheme is further described.
Shown in Figure 6 is the structural representation of the utility model SD card.Among Fig. 6, the SD card comprises card substrate 100 and is arranged at controller 101, intelligent card chip 102, storer 103 and the ultra material radio-frequency antenna 104 on card substrate 100 1 side surfaces.Wherein, intelligent card chip 102 is connected with controller 101 respectively with storer 103, and intelligent card chip 102 is connected with ultra material radio-frequency antenna 104 through a corresponding day wire pin simultaneously.Controller 101 is used to discern the operation of external unit to the SD card; Intelligent card chip 102 can receive the signal that said ultra material radio-frequency antenna 104 transmission come; And self the form of application data information through electric signal be sent to said ultra material radio-frequency antenna; Said intelligent card chip storage inside has application data, realizes various non-contact application.For example mobile phone wallet, mobile phone mass transit card etc.
In the present embodiment; Controller, intelligent card chip and storer all can use conventional prior art; Its inner structure and working method are conventionally known to one of skill in the art; The closing form of SD card is also identical with prior art simultaneously, and is not the main utility model technical essential of the utility model, does not therefore do detailed description at this.Simultaneously, disturb in order to make ultra material radio-frequency antenna 104 do not clamped the inner circuit module of mobile device that carries by SD, ultra material radio-frequency antenna 104 can be arranged at the outer ledge of SD card.Can certainly be arranged on the inside of card substrate 100 with surpassing material radio-frequency antenna 104, further make the miniaturization of SD card, save SD and be stuck in space shared in the mobile device.
The radio frequency standard that is applied to the mobile payment field is generally the low frequency frequency, and for example 13.56MHZ or 2.4GHZ can work in this low frequency in order to make the SD card, and the effect of antenna is particularly important.Yet according to the traditional antenna design proposal, the length of antenna is directly proportional with wavelength, and frequency is low more, thereby the longer antenna volume that causes of wavelength is big more.According to the traditional antenna design proposal, frequency of operation is an example with 13.56MHZ or 2.4GHZ still, and the thickness of antenna and length are all bigger, are difficult to be implemented in the application on the SD card.And in order to guarantee the high-performance of antenna, traditional radio-frequency antenna generally also need increase impedance matching network.
Ultra material is to be arranged on the base material and to be constituted by the artificial microstructure with certain pattern form, has different electromagnetic responses thereby the different pattern form of artificial microstructure makes ultra material have different specific inductive capacity with dimensional structure with the feasible ultra material of different magnetic permeabilities.Wherein, When this artificial microstructure is in resonance band; This artificial microstructure will show the dispersion characteristics of height, and the dispersion characteristics of so-called height are meant the impedance of this artificial microstructure, hold perception, equivalent specific inductive capacity and magnetic permeability be along with violent variation can take place frequency.
The above-mentioned principle of the ultra material of the utility model utilization; Design a kind of ultra material radio-frequency antenna; Micro groove structure is formed on the radiation sheet metal, saves the miniaturization of the design of impedance matching network with the realization antenna thereby the coupling of this radiation sheet metal and feeder line makes antenna have abundant radiation characteristic.Above-mentioned micro groove structure is a kind of form of artificial microstructure.The SD card of the utility model can be applied in mobile phone, PDA, MP3, MP4, computer and the digital camera, and the form of its SD card is with existing consistent.
The core of the utility model is ultra material radio-frequency antenna, below describes the ultra material radio-frequency antenna of the utility model in detail.
As shown in Figure 1; The said ultra material radio-frequency antenna of the utility model comprises medium substrate 1; Said medium substrate 1 has opposite first and second surface; The feeder line 10 that the first surface of said medium substrate is provided with radiation sheet metal 20 and is provided with around radiation sheet metal 20, said radiation sheet metal 20 is formed with micro groove structure 201.The second surface of said medium substrate 1 is provided with grounded metal sheet 30, and said grounded metal sheet 30 is electrically connected with radiation sheet metal 20.In the utility model, said grounded metal sheet 30 can be electrically connected through plated-through hole 40 with radiation sheet metal 20, can certainly adopt lead to connect.
Feeder line 10 is provided with to realize the signal coupling around radiation sheet metal 20.Radiation sheet metal 20 can contact with feeder line 10 in addition, also can not contact.When radiation sheet metal 20 contacts with feeder line 10, inductive coupled between feeder line 10 and the radiation sheet metal 10; When radiation sheet metal 20 does not contact with feeder line 10, capacitive coupling between feeder line 10 and the radiation sheet metal 20.
The micro groove structure 201 of the utility model can be the complementary helix structure shown in the complementary split ring resonator structure shown in Fig. 2 a, Fig. 2 b, a kind of in the two opening helical ring structures shown in the opening helical ring structure shown in Fig. 2 c, Fig. 2 d, the complementary folding line structure shown in Fig. 2 e or through several kinds of structures in front derive, compound or a micro groove structure that the group battle array obtains.Derive and be divided into two kinds; A kind of is that geometric configuration is derived; Another kind is that expansion is derived, and the geometric configuration is here derived and is meant that function class derives like, variform structure, is for example derived to class of a curve structure, triangle class formation and other different polygon class formation by the square frame class formation; The expansion is here derived and promptly on the basis of Fig. 2 a to Fig. 2 e, is offered new groove to form new micro groove structure; Complementary split ring resonator structure with shown in Fig. 2 a is an example, and Fig. 3 a is its geometric configuration synoptic diagram of deriving, and Fig. 3 b is its geometric configuration synoptic diagram of deriving.Compound being meant here, a plurality of stacks of the micro groove structure of Fig. 2 a to Fig. 2 e form a new micro groove structure, shown in Fig. 4 a, are the structural representation of the complementary split ring resonator structure shown in three Fig. 2 a after compound; Shown in Fig. 2 b, be that the complementary split ring resonator structure shown in two Fig. 2 a and Fig. 2 b are depicted as the common structural representation after compound of complementary helix structure.The group battle array here is meant the micro groove structure that is formed an integral body by the micro groove structure array on same sheet metal shown in a plurality of Fig. 2 a to Fig. 2 e, and is as shown in Figure 5, is the structural representation after a plurality of complementary split ring resonator structural group battle arrays shown in Fig. 2 a.This paper is that example is set forth the utility model with the opening helical ring structure shown in Fig. 2 c all.
In addition, in the utility model, medium substrate can be processed by stupalith, macromolecular material, ferroelectric material, ferrite material or ferromagnetic material.Preferably, being processed by macromolecular material, can be macromolecular materials such as FR-4, F4B particularly.
In the utility model, the processing and manufacturing of ultra material radio-frequency antenna as long as satisfy the design concept of the utility model, can be adopted various manufactures.Prevailing method is to use the manufacturing approach of all kinds of printed circuit board (PCB)s (PCB), and certainly, the PCB of double-sided copper-clad makes the processing request that also can satisfy the utility model.Remove this processing mode; Can also introduce other manufacturing process according to the needs of reality; (RFID is the abbreviation of Radio Frequency Identification such as RFID; Be REID, be commonly called as electronic tag) but in the processing mode that makes up of processing mode and iron plate and the PCB of flexible PCB processing, iron plate antenna of employed conductive silver paste printing ink processing mode, all kinds of deformation devices.Wherein, iron plate and PCB combination processing mode is meant that the accurate processing that utilizes PCB accomplishes the processing of ultra material radio-frequency antenna micro groove structure, accomplishes other slave part with iron plate.In addition, can also process through etching, plating, brill quarter, photoetching, electronics is carved or ion is carved method.Wherein etching is more excellent manufacturing process, and its step is after designing the topological pattern of suitable micro groove structure, through etching machines, utilizes the chemical reaction of solvent and metal to get rid of the metal section and part of presetting the micro groove structure pattern on the radiation sheet metal.
The material of above-mentioned radiation sheet metal can be metals such as copper, silver.Be preferably copper, copper is cheap comparatively speaking, conducts electricity very well.
The utility model also provides a kind of radio-frequency recognition system in addition, comprises reader and transponder, and said transponder is above-mentioned SD card.Said reader is conventional reader.Reader is launched the radio wave energy of a CF to the SD card, sees off in order to the application data that driving SD card will be stored on the intelligent card chip, and this moment, reader just received unscrambling data in regular turn, gave application program and did corresponding processing.
Combine accompanying drawing that the embodiment of the utility model is described above; But the utility model is not limited to above-mentioned embodiment, and above-mentioned embodiment only is schematically, rather than restrictive; Those of ordinary skill in the art is under the enlightenment of the utility model; Not breaking away under the scope situation that the utility model aim and claim protect, also can make a lot of forms, these all belong within the protection of the utility model.
Claims (10)
1. SD card; Comprise controller, intelligent card chip, storer and ultra material radio-frequency antenna; Said intelligent card chip is connected with said controller respectively with said storer, and said ultra material radio-frequency antenna is connected with said intelligent card chip, it is characterized in that; Said ultra material radio-frequency antenna comprises medium substrate; Said medium substrate has opposite first and second surface, the feeder line that the first surface of said medium substrate is provided with radiation sheet metal and is provided with around radiation sheet metal, and said radiation sheet metal is formed with micro groove structure.
2. SD card as claimed in claim 1 is characterized in that the second surface of said medium substrate is provided with grounded metal sheet, and said grounded metal sheet is electrically connected with radiation sheet metal.
3. SD card as claimed in claim 2 is characterized in that said grounded metal sheet is electrically connected through plated-through hole with radiation sheet metal.
4. SD card as claimed in claim 1; It is characterized in that, said micro groove structure comprise complementary split ring resonator structure, complementary helix structure, opening helical ring structure, two opening helical ring structure, complementary folding line structure and through several kinds of structures in front derive, compound or a micro groove structure that the group battle array obtains.
5. SD card as claimed in claim 1 is characterized in that, passes through capacitive coupling scheme feed between said radiation sheet metal and the feeder line.
6. SD card as claimed in claim 1 is characterized in that, said SD card also comprises card substrate, and said controller, intelligent card chip and storer are arranged on the side surface of card substrate.
7. SD card as claimed in claim 6 is characterized in that, said ultra material radio-frequency antenna is arranged on the side surface of card substrate.
8. SD card as claimed in claim 6 is characterized in that, said ultra material radio-frequency antenna is arranged on the inside of card substrate.
9. SD card as claimed in claim 1 is characterized in that, said micro groove structure through etching, bore quarter, photoetching, electronics is carved or ion is carved and is formed on the said radiation sheet metal.
10. a radio-frequency recognition system comprises reader and transponder, it is characterized in that, said transponder is any described SD card of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120217235U CN202134031U (en) | 2011-06-24 | 2011-06-24 | SD (Secure Digital) card and radio frequency identification system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120217235U CN202134031U (en) | 2011-06-24 | 2011-06-24 | SD (Secure Digital) card and radio frequency identification system thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202134031U true CN202134031U (en) | 2012-02-01 |
Family
ID=45522794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120217235U Expired - Lifetime CN202134031U (en) | 2011-06-24 | 2011-06-24 | SD (Secure Digital) card and radio frequency identification system thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202134031U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102810178A (en) * | 2011-06-24 | 2012-12-05 | 深圳光启高等理工研究院 | SD card and radio frequency identification system thereof |
| CN103298165A (en) * | 2012-02-29 | 2013-09-11 | 深圳光启创新技术有限公司 | Router |
-
2011
- 2011-06-24 CN CN201120217235U patent/CN202134031U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102810178A (en) * | 2011-06-24 | 2012-12-05 | 深圳光启高等理工研究院 | SD card and radio frequency identification system thereof |
| CN103298165A (en) * | 2012-02-29 | 2013-09-11 | 深圳光启创新技术有限公司 | Router |
| CN103298165B (en) * | 2012-02-29 | 2018-04-17 | 深圳光启创新技术有限公司 | A kind of router |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 518057 2, building 9, hi tech middle 1, Nanshan District high tech Zone, Shenzhen, Guangdong. Co-patentee after: Shenzhen Kuang-Chi Innovation Technology Co., Ltd. Patentee after: Shenzhen Kuang-Chi Institute of Advanced Technology Address before: 518000 software building 9, hi tech middle 1, central high tech Zone, Shenzhen, Guangdong, China. Co-patentee before: Shenzhen Kuang-Chi Innovation Technology Co., Ltd. Patentee before: Shenzhen Kuang-Chi Institute of Advanced Technology |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120201 |