CN101520836A - Non-contact integrated circuit card system - Google Patents
Non-contact integrated circuit card system Download PDFInfo
- Publication number
- CN101520836A CN101520836A CN200810007545A CN200810007545A CN101520836A CN 101520836 A CN101520836 A CN 101520836A CN 200810007545 A CN200810007545 A CN 200810007545A CN 200810007545 A CN200810007545 A CN 200810007545A CN 101520836 A CN101520836 A CN 101520836A
- Authority
- CN
- China
- Prior art keywords
- antenna
- integrated circuit
- main antenna
- open
- card system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Near-Field Transmission Systems (AREA)
Abstract
The invention discloses a non-contact IC card system communicating with a card reader. The non-contact IC card system comprises an IC chip executing non-contact identification, a main antenna connected to the IC chip to input and output signals from the card reader, and at least one open antenna which is arranged on the main antenna and used for increasing the gain of the main antenna so as to enhance the electromagnetic induction of the main antenna.
Description
Technical field
(Integrated Circuit, IC) card system relate in particular to a kind of radio-frequency (RF) identification (Radio Frequency Identification, contactless IC card system RFID) of being used for to the present invention relates to a kind of contact-free integrated circuit.
Background technology
In recent years, the rfid system personnel that have been widely used in automatic ticket checking, the gate control system of mass transportation systems come in and go out keyholed back plate and electronic money system etc.Rfid system comprises non-contact IC card and read-write equipment usually, and this read-write equipment is used to read the interior data of IC-card and writes data to IC-card.Rfid system utilizes the principle of electromagnetic induction, and the electromagnetic field that gives off by the tours antenna in read-write equipment and the electromagnetic induction of IC-card tours antenna are to provide communicating by letter between IC-card and the read-write equipment.
In order to ensure the excellent communications scope is arranged between IC-card and read-write equipment, the tours antenna in the read-write equipment should be able to give off the electromagnetic intensity of certain degree.The tours antenna of read-write equipment comprises the toroid winding that is formed by the conducting plane winding.Wherein, toroid winding is formed with its center winding respect to one another district, and it is identical with width and symmetrical at interval.In addition, because vortex flow can cause the undesired running of tours antenna of read-write equipment, so this tours antenna should not be installed in metal shell.Toroid winding is if be installed in metal shell, the tours antenna of read-write equipment can't be effectively with electromagnetic field radiation to IC-card, make IC-card and read-write equipment communication range diminish.If the housing with the resin material covers toroid winding, then need between the circuit board in tours antenna and the resinous wood mass shell body, pad be set, to avoid the caused noise of electromagnetic radiation, so can increase the thickness of housing.Portable electronic devices of small has its size restrictions for the ease of carrying.Therefore, any toroid winding configuration can not guarantee that all the electromagnetic field that toroidal space can be enough to suppress from the radiation of tours antenna institute in the housing causes harmful effect to the devices such as circuit board that are close to inner walls, can't prevent that also metal shell from influencing tours antenna.Therefore, canister and rfid system compatible degree are poor.In order to improve above-mentioned shortcoming, the RFID antenna of some improvement gains is disclosed.
The RFID antenna that is disclosed in the 7th, 161, No. 542 patents of the U.S. is electrically connected to IC chip or capacitor, and is fixed in object.This antenna comprises plane conductive member and coil main body, first side of this conductive member is installed on the object, described coil main body is installed in conductive member second side (with respect to first side), and this coil main body is made up of coil turn, wherein conductive member retarder main body and object.Fig. 1 and Fig. 2 have shown the RFID antenna that is disclosed in the 7th, 161, No. 542 patents of the U.S..Conductive member 14a uses thin slice, thin plate or the film of conductive material.As long as conductive member 14a has conduction property, therefore can be by electrically conductive ink being coated non-conductive thin slice, thin plate or film 16 back sides, and be dried, to obtain member 14a, shown in the enlarged drawing of Fig. 2 as conductive coat.Spiral winding main body 14b uses the conventional coil main body.Form coil main body 14b by the screw diameter or the number of turn of adjusting coil main body 14b.When coil main body 14b is wound in the front end of conductive member 14a, then had default eigenwert.When IC chip 13 was connected to the two ends of coil main body 14b, then IC chip 13 directly adhered to conductive member 14a.Coil main body 14b is fixed in conductive member 14a, and then the U.S. the 7th, 161, and the eigenwert of the antenna 14 of No. 542 patents generally can change.When coil main body 14b is wound in the front end of conductive member 14a, then may transmits electric wave to antenna 14 and start label 12 with predeterminated frequency.Yet, with regard to antenna 14, should be wound in the front end of conductive member 14a with the coil main body 14b of predeterminated frequency reception electric wave.Adjust coil main body 14b for predeterminated frequency and be not easy.And after coil main body 14b was fixed in conductive member 14a, its eigenwert can't be adjusted.
Other related invention also is disclosed in the 7th, 183, No. 987 patents of the U.S..The antenna assembly that is provided for register or player writes or reads the data of non-contact IC card.As shown in Figure 3, antenna assembly 30 comprises the toroid winding 31 that is used for radiation field, and the toroid winding magnetic couplings of this toroid winding 31 and IC-card is to transmit and the data that receives IC-card.Antenna assembly 30 also comprise over against toroid winding 31 masters and with the opposed magnetic flakes 32 of the master of IC-card.Simultaneously, toroid winding 31 has with its center Unsymmetrical Winding respect to one another district, and this interval on a certain direction, winding district is different with width.Vertical direction shown in Fig. 3 arrow Z, the interval of winding district, the top 31a of toroid winding 31 is bigger with width, and the interval of bottom winding district 31b is less with width.On the other hand, magnetic flakes 32 forms the rectangle bigger than toroid winding 31, makes its master be covered toroid winding 31 fully.Described antenna assembly 30 has the magnetic flakes 32 that depends on toroid winding 31 masters, and this magnetic flakes 32 is opposed with the master in the face of IC-card.Because toroid winding 31 is asymmetric, and can control from the DISTRIBUTION OF MAGNETIC FIELD of toroid winding 31 radiation, therefore communication range more widely can be provided between IC-card and R/W, can also on a certain direction, change communication position.And antenna assembly 30 has the magnetic flakes 32 in the face of toroid winding 31 masters, and this magnetic flakes 32 is opposed with the master in the face of IC-card, therefore can only promote the Distribution of Magnetic Field in the face of toroid winding 31 masters of IC-card.Toroid winding 31 should be made with special shape, it can't be adjusted, to address the above problem after installation.
The rfid system antenna assembly that operates under the metal environment is feasible technically, yet implements but to have its difficulty in reality.The mode that solves is after utilizing absorbing material to carry out the part obstruct mostly, adopts the antenna of three-dimensional coil design then, and therefore the communication range between IC-card and read-write equipment greatly increases.The frequency of the above-mentioned more difficult control antenna of design, and increase many uncertain stray capacitances.Also can adopt winding coil to change Distribution of Magnetic Field in addition, wherein the transmission of Distribution of Magnetic Field is injected the metal surface by vertical direction and is parallel to the metal surface instead, thereby has greatly reduced the influence that metal caused.Right its aforementioned required antenna thickness is excessive, and in order to reach the requirement that reduces label thickness, the RFID antenna of conventional thickness can't be applicable to the current epoch of moving towards slimming.Therefore, the present invention proposes a kind of contactless IC card system that can normal operation under the metal environment and solves the problem that present prior art faces.
Summary of the invention
This part outline some feature of the present invention, other features will be narrated at follow-up paragraph.The present invention is defined by claims, and it is incorporated in this part with as a reference.
Fundamental purpose of the present invention is for providing a kind of contactless IC card system that is used for card reader, and this system comprises the IC chip of carrying out contactless identification; Be connected to the main antenna of IC chip, be used for signal input and output card reader; And at least one is arranged at the open antenna on the main antenna, is used for increasing the gain of main antenna, to strengthen the electromagnetic induction of main antenna.
The conception according to the present invention, wherein said signal is a radiofrequency signal.
The conception according to the present invention, wherein said main antenna and open antenna are flat plane antenna.
The conception according to the present invention, wherein said main antenna and open antenna include a pair of winding coil end.
The conception according to the present invention, the winding coil end of wherein said open antenna is corresponding with the winding coil end of main antenna.
The conception according to the present invention, wherein said contactless IC card system also comprises shield member, is used for reducing the interference that is caused when metal object places the metal environment.
The conception according to the present invention, wherein said shield member is arranged between metal object and the main antenna.
The conception according to the present invention, wherein said open antenna is arranged between main antenna and the shield member.
The conception according to the present invention, wherein said open antenna is provided with on main antenna and the shield member.
Main another purpose of the present invention is for providing a kind of contactless IC card system of communicating by letter with card reader under the metal environment, this system comprises the IC chip of carrying out contactless identification; Be connected to the main antenna of IC chip, be used for signal input and output card reader; Be arranged at the shield member between metal environment and the main antenna, be used to reduce the interference that the metal environment is caused; Be arranged at first open antenna between main antenna and the shield member; And be arranged at second open antenna on main antenna and the shield member.Wherein, first open antenna and second open antenna increase the gain of main antenna, to strengthen the electromagnetic induction of main antenna.
The conception according to the present invention, wherein said signal is a radiofrequency signal.
The conception according to the present invention, wherein said main antenna and open antenna are flat plane antenna.
The conception according to the present invention, wherein said main antenna, first open antenna and second open antenna include a pair of winding coil end.
The conception according to the present invention, the winding coil end of wherein said first open antenna and second open antenna is corresponding with main antenna winding coil end.
Description of drawings
Fig. 1 has the vertical view of the label of antenna for the existing RFID of being used for;
The sectional view that Fig. 2 is captured along line A-A for Fig. 1;
Fig. 3 is the synoptic diagram of the antenna assembly of existing register that is used for non-contact IC card or player;
Fig. 4 is used for the synoptic diagram of first embodiment of the antenna assembly of the contactless IC card system under the metal environment for the present invention;
Fig. 5 is the synoptic diagram of second embodiment of contactless IC card system of the present invention; And
Fig. 6 is the synoptic diagram of the 3rd embodiment of contactless IC card system of the present invention.
The main element symbol description
12 labels, 13 IC chips
14 antenna 14a conductive members
14b coil main body 16 films
30 antenna assemblies, 31 toroid windings
Winding district, 31b bottom, winding district, 31a top
32 magnetic flakes, 41 shield members
42 main antennas, 421 winding coil ends
43 open antennas, 44 IC chips
51 shield members, 52 main antennas
53a open antenna 53b open antenna
54 IC chips, 61 shield members
62 main antenna 63a open antennas
63b open antenna 64 IC chips
Embodiment
Fig. 4 has shown that the present invention is used for contact-free integrated circuit (IntegratedCircuit, IC) first embodiment of the antenna assembly of card system under the metal environment.As shown in Figure 4, the contactless IC card system of communicating by letter with the card reader (not shown) comprises IC chip 44, main antenna 42, shield member 41 and open antenna 43.
In the present embodiment, contactless IC card system is radio-frequency (RF) identification (RFID) system.Contactless IC card system can be used for payment, the credit card trade of mass transportation systems, access of gate control system data etc.Open antenna 43 is that with the difference of main antenna 42 main antenna 42 is electrically connected to IC chip 44.With regard to the present invention, shield member 41 can be the conductor of thin slice, thin plate or form of film.Shield member 41 also can be flexible magnetic member.In addition, magnetic component can be by quick curing material, casting material, rolled material matter, forge in material and the sintering material at least one is formed, and above-mentioned each material comprises at least one in non-crystaline amorphous metal, magnetic steel, silicon steel, ferroaluminium and the soft magnetic ferrite.Simultaneously, magnetic component contains the thin slice of (1) ferrite or metal or the composite of particulate and (2) plastic cement or rubber, or contain ferrite or the thin slice of metal or filming of particulate in comprising.In addition, the adhesion thin slice that magnetic component can be formed for metal or soft magnetic ferrite by a plurality of thin slices being adhered to the surface of the bottom material thin slice that plastic cement forms, makes thin slice closely contact each other.
Among first embodiment as shown in Figure 4, open antenna 43 is arranged at main antenna 42 tops.In practical application, open antenna 43 can be arranged between main antenna 42 and the shield member 41.Main antenna 42 and open antenna 43 mutually insulateds can be further coat the coiling coil and coiling coil and Wrapping sheet are adhered to each other by the Wrapping sheet of being made up of plastic cement and obtain open antenna 43.
The present invention can comprise at least one open antenna.Please refer to second embodiment that Fig. 5 has shown the contactless IC card system that is used under the metal environment.In the present embodiment, contactless IC card system comprises IC chip 54, main antenna 52, shield member 51 and is arranged at two open antenna 53a and 53b on the main antenna 52.Simultaneously, main antenna 52 is shielded by shield member 51 with open antenna 53a and 53b, and therefore the interference that the metal environment caused also reduces.The difference of open antenna 53a and 53b and main antenna 52 is that main antenna 52 is electrically connected to IC chip 54.
The present invention can be used for as portable communication equipments such as mobile phones, and therefore above-mentioned metal environment can be made of the battery of mobile phone that is arranged between shield member 51 and the main chip 54.
Fig. 6 has shown the 3rd embodiment of the contactless IC card system that is used under the metal environment.In the present embodiment, contactless IC card system comprises IC chip 64, main antenna 62, shield member 61 and two open antenna 63a and 63b.Open antenna 63a is arranged between main antenna 62 and the shield member 61, and open antenna 63b then is arranged on main antenna 62 and the shield member 61.
Similarly, contactless IC card system is a rfid system.In the present embodiment, contactless IC card system can be applied to mass transportation systems, gate control system, credit card trade etc.In addition, main antenna 62 and open antenna 63a and 63b mutually insulated.Therefore, the one-piece construction of antenna can be avoided the influence of metal object by shield member, and enlarges communication inductive action scope by extra open antenna.
Described contactless IC card system does not comprise shield member usually, and contactless IC card system not necessarily is in contiguous environment as metal objects such as batteries of mobile phone for a long time.
Main antenna of the present invention and open antenna are flat plane antenna, all have a pair of winding coil end.In addition, the position of the winding coil end of open antenna is corresponding with the winding coil end of main antenna.
In sum, the invention discloses a kind of open antenna of contactless IC card system, with the gain of increase main antenna, thus the electromagnetic induction of reinforcement main antenna.When contactless IC card system placed as metal environment such as mobile phone following time, can reduce the caused disturbing effect of metal object.When contactless IC card system does not place the metal environment, then increase communication role scope with card reader.Simultaneously, open antenna can be adjusted the frequency of main antenna according to different demands.
Though the present invention is described in detail by the above embodiments, can not break away from the various modifications of the scope that claims of the application protect by those skilled in the art.
Claims (14)
1, a kind of non-contact integrated circuit card system that is used for card reader, this system comprises:
Carry out the integrated circuit (IC) chip of contactless identification;
Be connected to the main antenna of integrated circuit (IC) chip, be used for signal input and output card reader; And
The open antenna that at least one is arranged on the main antenna is used for increasing the gain of main antenna, to strengthen the electromagnetic induction of main antenna.
2, non-contact integrated circuit card system according to claim 1, wherein said signal are radiofrequency signal.
3, non-contact integrated circuit card system according to claim 1, wherein said main antenna and open antenna are flat plane antenna.
4, non-contact integrated circuit card system according to claim 1, wherein said main antenna and open antenna include a pair of winding coil end.
5, non-contact integrated circuit card system according to claim 4, the winding coil end of wherein said open antenna is corresponding with the winding coil end of main antenna.
6, non-contact integrated circuit card system according to claim 1, this system also comprises shield member, is used for reducing the interference that is caused when metal object places the metal environment.
7, non-contact integrated circuit card system according to claim 6, wherein said shield member is arranged between metal object and the main antenna.
8, non-contact integrated circuit card system according to claim 7, wherein said open antenna is arranged between main antenna and the shield member.
9, non-contact integrated circuit card system according to claim 7, wherein said open antenna is arranged on main antenna and the shield member.
10, a kind of non-contact integrated circuit card system of under the metal environment, communicating by letter with card reader, this system comprises:
Carry out the integrated circuit (IC) chip of contactless identification;
Be connected to the main antenna of integrated circuit (IC) chip, be used for signal input and output card reader;
Be arranged on the shield member between metal environment and the main antenna, be used to reduce the interference that the metal environment is caused;
Be arranged on first open antenna between main antenna and the shield member; And
Be arranged on second open antenna on main antenna and the shield member;
Wherein, first open antenna and second open antenna increase the gain of main antenna, to strengthen the electromagnetic induction of main antenna.
11, non-contact integrated circuit card system according to claim 10, wherein said signal are radiofrequency signal.
12, non-contact integrated circuit card system according to claim 10, wherein said main antenna and open antenna are flat plane antenna.
13, non-contact integrated circuit card system according to claim 10, wherein said main antenna, first open antenna and second open antenna include a pair of winding coil end.
14, non-contact integrated circuit card system according to claim 13, the winding coil end of wherein said first open antenna and second open antenna is corresponding with the winding coil end of main antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810007545A CN101520836A (en) | 2008-02-27 | 2008-02-27 | Non-contact integrated circuit card system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810007545A CN101520836A (en) | 2008-02-27 | 2008-02-27 | Non-contact integrated circuit card system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101520836A true CN101520836A (en) | 2009-09-02 |
Family
ID=41081421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810007545A Pending CN101520836A (en) | 2008-02-27 | 2008-02-27 | Non-contact integrated circuit card system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101520836A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101867083A (en) * | 2010-05-05 | 2010-10-20 | 上海复旦微电子股份有限公司 | Antenna device |
| US8195236B2 (en) | 2010-06-16 | 2012-06-05 | On Track Innovations Ltd. | Retrofit contactless smart SIM functionality in mobile communicators |
| US8424757B2 (en) | 2010-12-06 | 2013-04-23 | On Track Innovations Ltd. | Contactless smart SIM functionality retrofit for mobile communication device |
-
2008
- 2008-02-27 CN CN200810007545A patent/CN101520836A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101867083A (en) * | 2010-05-05 | 2010-10-20 | 上海复旦微电子股份有限公司 | Antenna device |
| CN101867083B (en) * | 2010-05-05 | 2014-04-09 | 上海复旦微电子集团股份有限公司 | Antenna device |
| US8195236B2 (en) | 2010-06-16 | 2012-06-05 | On Track Innovations Ltd. | Retrofit contactless smart SIM functionality in mobile communicators |
| US8424757B2 (en) | 2010-12-06 | 2013-04-23 | On Track Innovations Ltd. | Contactless smart SIM functionality retrofit for mobile communication device |
| US9342778B2 (en) | 2010-12-06 | 2016-05-17 | On Track Innovations Ltd. | Contactless smart SIM functionality retrofit for mobile communication device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102091132B1 (en) | Wireless communication system, antenna module and electronic device | |
| CN101278439B (en) | Coil antenna and portable electronic apparatus | |
| US20090159657A1 (en) | Contactless integrated circuit card system | |
| US10658870B2 (en) | Combo antenna unit and wireless power receiving module comprising same | |
| CN101069323B (en) | Antenna apparatus | |
| US9104954B2 (en) | Radiofrequency transponder device with optimized passive resonant circuit | |
| CN1839515B (en) | Information processing device having non-contact reader and/or writer and coil antenna for magnetic connection | |
| JP5026522B2 (en) | Optimized reading method and system for transponders for high frequency communications using passive resonant circuits | |
| US9837718B2 (en) | Display arrangement and method for fabrication of a display arrangement | |
| US9016592B2 (en) | Antenna device and communication terminal apparatus | |
| US10607770B2 (en) | Shield unit for wireless charging and wireless power transmission module comprising same | |
| CN103903048A (en) | Folding Peano fractal anti-metallic ultrahigh frequency RFID electronic tag | |
| EP2490294B1 (en) | Transmission/reception antenna and transmission/reception device using same | |
| KR20150105513A (en) | Metal card with antenna | |
| KR20130127103A (en) | Electromagnetic shielding sheet using non-sintered ferrite ceramic thick film | |
| CN101520836A (en) | Non-contact integrated circuit card system | |
| CN109755728A (en) | NFC antenna equipment in metal environment | |
| US8418923B2 (en) | Non-contact reading device with reduced loading effect | |
| CN210181644U (en) | RFID tag and automatic identification system | |
| CN105789837A (en) | Antenna for wireless communication | |
| Paret | Technical state of art of" Radio Frequency Identification--RFID" and implications regarding standardization, regulations, human exposure, privacy | |
| CN203054852U (en) | Non-contact IC card communication device | |
| CN103034824A (en) | Non-contact integrated circuit (IC) card communication device | |
| CN217881894U (en) | Two-in-one antenna and terminal | |
| JP2014207516A (en) | Thin antenna and antenna unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090902 |