CN207020704U

CN207020704U - Sim card

Info

Publication number: CN207020704U
Application number: CN201720869181.0U
Authority: CN
Inventors: 蔡凌云
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2017-07-17
Filing date: 2017-07-17
Publication date: 2018-02-16
Anticipated expiration: 2027-07-17

Abstract

The utility model discloses a kind of SIM card, including SIM card body, SIM chip and RFID read-write unit, the SIM chip and RFID read-write unit are integrated in the both sides up and down of SIM card body respectively, the RFID read-write unit includes RFID chip, feed antennas and the induction antenna coupled with feed antennas, the RFID chip electrically connects with SIM chip, the RFID chip is respectively perpendicular to feed is located at the periphery of feed antennas in the both ends of feed antennas, the induction antenna.Pass through above-mentioned technical proposal so that being inserted with GSM the or CDMA mobile phones of SIM card can both be used as regular handset to carry out conventional communications, can be written and read again as RFID read-write device to electronic tag.In addition, by feed antennas periphery inductive coupling antenna, may extend away the electrical length of feed antennas, so as to reduce the size of feed antennas, and then RFID read-write unit being arranged in the profile of Micro SIM cards.

Description

SIM card

Technical field

Technical field of RFID is the utility model is related to, more particularly to a kind of SIM card with RFID read-write function.

Background technology

With the development of mobile communication technology, the special read-write equipments of RFID are combined with mobile phone, made general The function that logical mobile phone has read-write RFID turns into a kind of new development trend.Existing way is usually specially Read-write equipment is designed to RFID reader chip, and by the RFID reader integrated chip in GSM or CDMA mobile phones In SIM card, so that common mobile phone has the function of read-write RFID.

Existing RFID- (U) SIM card is to set RFID chip and antenna at the back side of standard SIM card metal terminal, and it is logical Antenna gathered data information is crossed, the information collected is handled by RFID chip, and is carried out using the CPU in SIM card Computing.The outward appearance and conventional SIM card of existing RFID- (U) SIM card are completely the same, and the institute of compatible conventional SIM card is functional, simultaneously Support all kinds of contactless applications.But also there are some defects in existing RFID- (U) SIM card：

1st, the antenna of existing RFID- (U) SIM card is integrated on the sim card, is realized using coil antenna, antenna can be in conductor Surface produces vortex to weaken the magnetic field of antenna, and when sending and receiving signal easily by mobile phone signal and around electromagnetism The influence of field, the communication distance and communication quality of RFID chip and electronic tag are weakened to a certain extent.

2nd, existing RFID- (U) SIM cards are limited because of antenna arrangement position thereon, prevent it from being cut to from Mini SIM cards Micro SIM cards, so as to be substantially reduced its scope of application.

Utility model content

Main purpose of the present utility model is to propose a kind of Mobile phone card with RFID read-write function, it is intended to existing RFID- (U) SIM card reading/writing distance is near, reads and writes ropy technical problem.

To achieve the above object, the utility model supplies a kind of SIM card, including：

SIM card body, there is the first face and second face opposite with first face；

SIM chip, it is integrated in the first face of the SIM card body；And

RFID read-write unit, is integrated in the second face of the SIM card body, the RFID read-write unit include RFID chip, Feed antennas and the induction antenna coupled with the feed antennas, the RFID chip electrically connects with the SIM chip, described Feed antennas includes the first extension being connected respectively with the RFID chip and the second extension and connection described first is prolonged The linkage section of section and the second extension is stretched, first extension is vertical with the second extension；The induction antenna is located at described The periphery of feed antennas.

Preferably, the opening towards the feed antennas is offered on the induction antenna.

Preferably, the RFID read-write unit is located in the profile of Micro SIM cards.

Preferably, the position of projection of the RFID chip on first face and the VCC metal ends of the SIM chip Son is corresponding with the position of RST metal terminals, position and the SIM of projection of first extension on first face The position of the GND metal terminals of chip is corresponding, second extension and projection of the linkage section on first face Set around the SIM chip.

Preferably, the feed antennas is rectangle, and the linkage section is the adjacent both sides of the rectangle.

Preferably, periphery of the induction antenna along the feed antennas is set around the feed antennas.

Preferably, the feed antennas and induction antenna are planar structure.

Preferably, the SIM card body includes first medium layer, ground plane and second dielectric layer, and the ground plane is located at Between the first medium layer and second dielectric layer, the SIM chip and RFID read-write unit are respectively arranged at described first and are situated between On matter layer and second dielectric layer.

Preferably, the first medium layer is made up of PVC and/or ABS；And/or

The second dielectric layer is made up of PVC and/or ABS.

Preferably, the RFID chip is rectangle, and first extension and the second extension are respectively perpendicular to described The adjacent both sides of RFID chip two.

The utility model SIM card, by setting SIM chip and RFID read-write unit respectively on the two sides of SIM card body Being inserted with GSM the or CDMA mobile phones of SIM card can both be used as regular handset to carry out conventional communications, can be used as RFID read-write device again Electronic tag is written and read, so that GSM the or CDMA mobile phones for being inserted with SIM card are applicable to atypia field, especially It is mobile phone on-site payment and field of identity authentication.

Particularly, the utility model SIM card, by the way that the first extension of feed antennas and the second extension are vertically set Put so that electric current constant amplitude, the phase at feed antennas both ends differ 90 degree, so as to realize feed antennas circular polarization radiation, so as to side Just the axle ratio of feed antennas is controlled.By in feed antennas periphery inductive coupling antenna, may extend away the electrical length of feed antennas, from And the size of feed antennas can be reduced.By opening up the opening towards feed antennas on induction antenna, there is induction antenna Capacitor and inductor characteristic is to offset the interference to RFID antenna such as SIM chip, battery of mobile phone, metallic plate, so as to expand RFID cores The communication distance of piece and electronic tag, the communication quality for enhancing RFID chip and electronic tag, that is, increase RFID read-write list Effective reading/writing distance of member, the read-write quality for enhancing RFID read-write unit.

Brief description of the drawings

, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only It is some embodiments of the utility model, for those of ordinary skill in the art, is not paying the premise of creative work Under, other accompanying drawings can also be obtained according to the structure shown in these accompanying drawings.

Fig. 1 is the structural representation of the embodiment of the utility model SIM card one；

Fig. 2 is another structural representation of the embodiment of the utility model SIM card one；

Fig. 3 is the structural representation of RFID read-write unit in Fig. 1；

Fig. 4 is the structural representation of SIM chip in Fig. 2；

The side structure schematic diagram of the embodiment of Fig. 5 the utility model SIM card one.

Drawing reference numeral explanation：

Realization, functional characteristics and the advantage of the utility model purpose will be described further referring to the drawings in conjunction with the embodiments.

Embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out Clearly and completely describing, it is clear that described embodiment is only part of the embodiment of the present utility model, rather than all Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making creative work premise Lower obtained every other embodiment, belong to the scope of the utility model protection.

If it is to be appreciated that related in the utility model embodiment directionality instruction (such as upper and lower, left and right, it is preceding, Afterwards ...), then directionality instruction be only used for explain it is relative between each part under a certain particular pose (as shown in drawings) Position relationship, motion conditions etc., if the particular pose changes, directionality instruction also correspondingly changes therewith.

If, should " first ", " the in addition, relate to the description of " first ", " second " etc. in the utility model embodiment Two " etc. description is only used for describing purpose, and it is not intended that instruction or implying its relative importance or implicit indicating meaning The quantity of the technical characteristic shown.Thus, " first " is defined, the feature of " second " can express or implicitly include at least one Individual this feature.In addition, the technical scheme between each embodiment can be combined with each other, but must be with ordinary skill Personnel can be implemented as basis, and this technical side is will be understood that when the combination appearance of technical scheme is conflicting or can not realize The combination of case is not present, also not within the protection domain of the requires of the utility model.

The utility model provides a kind of SIM card 100, to insert in intelligent terminal, such as GSM or CDMA mobile phones, so that Being inserted with the mobile phone of SIM card 100 can both be used as regular handset to carry out conventional communications；RFID read-write device can be used as again to electronics Label is written and read.Fig. 1 and Fig. 3 are referred to, in one embodiment, the SIM card 100 includes SIM card body 10, SIM chip 20 And RFID read-write unit 30, SIM chip 20 are the SIM read-write chips indicated in Fig. 1, Fig. 2 and Fig. 3.Specifically：

The SIM card body 10 has the first face 111 and second face 121 opposite with the first face 111.

The SIM chip 20 is integrated in the first face 111 of SIM card body 10.Wherein, the SIM card body 10 and it is integrated in it The SIM chip 20 in the first face 111 is known SIM card, and the SIM chip 20 includes VCC metal terminals 21, RST metal terminals 22nd, CLK metal terminals 23, GND metal terminals 24, VPP metal terminals 25 and IO metal terminals 26.

The RFID read-write unit 30 is integrated in the second face 121 of SIM card body 10.The RFID read-write unit 30 includes RFID chip 31, feed antennas 32 and the induction antenna 33 coupled with feed antennas 32, the RFID chip 31 are read for RFID Chip is write, the feed antennas 32 is loop aerial, and the RFID chip 31 electrically connects with SIM chip 20.The feed antennas 32 include first extension of the first extension 322 being connected respectively with RFID chip 31 and the second extension 323 and connection The linkage section 321 of the extension 323 of section 322 and second, first extension 322 is arranged in a mutually vertical manner with the second extension 323. The induction antenna 33 is located at the periphery of the feed antennas 32.In the present embodiment, first extension 322 is prolonged with second Stretch the feed equal length of section 323.

Preferably, the opening 331 towards feed antennas 32 is offered on the induction antenna 33.

The feed antennas 32 and induction antenna 33 are referred to as RFID antenna, and the feed antennas 32 surrounds RFID chip 31 Set, the induction antenna 33 sets around feed antennas 32, by the electromagnetic coupled of feed antennas 32 and induction antenna 33 with The radiation of RFID antenna is realized, and the electric long of feed antennas 32 is extended in the peripheral inductive coupling antenna 33 of feed antennas 32 Degree, to reduce the size of feed antennas 32.The RFID chip 31 is distinguished by the first extension 322 and the second extension 323 To the both ends of feed antennas 32, the extension 323 of the first extension 322 and second is mutually perpendicular to be distributed and fed vertical feed Equal length so that electric current constant amplitude, the phase at the both ends of feed antennas 32 differ 90 degree, so as to realize the circular polarisation spoke of feed antennas 32 Penetrate, so as to the axle ratio of convenient control feed antennas 32.

Wherein, the induction antenna 33 is in series by electric capacity and inductance, and feed antennas 32 forms parallel relationship, described The size of opening 331 is made up of electric capacity.It is a constant according to plates capacitance formula C=ε S/4 π kd, ε, S is capacitor plate Facing area, d are the distance of capacitor plate, and k is then electrostatic force constant, so size and sensing day by optimizing opening 331 Spacing between line 33 and feed antennas 32, the capacitor and inductor characteristic of induction antenna 33 is set to offset SIM chip 20, battery of mobile phone, gold Belong to the interference to feed antennas 32 such as plate.

SIM card 100 is inserted into mobile phone, mobile phone can gather the data message of RFID, RFID by RFID antenna Chip 31 will be sent to SIM chip 20 after the processing data information collected, so that both can be by these data messages in mobile phone Upper display or storage, database hub realization can also be sent to by mobile phone information in electronic tag is judged, and then realized The identification of article.

The utility model SIM card 100, by setting SIM chip 20 and RFID read-write list respectively on the two sides of SIM card body 10 Member 30 causes GSM the or CDMA mobile phones for being inserted with SIM card 100 to be both used as regular handset to carry out conventional communications, again can conduct RFID read-write device is written and read to electronic tag, so that GSM the or CDMA mobile phones for being inserted with SIM card 100 are applicable to Atypia field, especially mobile phone on-site payment and field of identity authentication.

Specifically, SIM card 100 is inserted into intelligent terminal is applied at least following scene in atypia field：

1) after the user mobile phone for being inserted with SIM card 100 opens payment transaction, it is possible to partly having Chinese shifting using mobile phone Businessman's (such as convenience store, market, supermarket, public transport) of dynamic, UNICOM or the special POS of telecommunications carries out live bankcard consumption.It is now each Big scenic spot, museum are done step-by-step and society are opened for free, then pass through wifi network at scenic spot, museum gateway Network gathers visitor's identity perfect instrument information from hand-held mobile terminal automatic identification, and information record is entered in system data The heart, not only safety but also the time of visitor was saved.

2) SIM card 100 can also be inserted into automobile T-BOX, realizes the remote identification of information of vehicles, particularly exist During into multi-storied garage, a-card-a-car, plc data centers are sent information to by SIM card, realize to the stopping of each car, take and do To automation, without human users.By the corresponding informance in vehicle and garage as parking stall numbering, situation of paying dues etc. are delivered to garage Control system, realize the functions such as quick parking, quick pick-up, non-parking charge.

Particularly, the utility model SIM card 100, by by the first extension 322 of feed antennas 32 and the second extension 323 are vertically arranged so that electric current constant amplitude, the phase at the both ends of feed antennas 32 differ 90 degree, so as to realize the entelechy of feed antennas 32 Change radiation, so as to the axle ratio of convenient control feed antennas 32.By in the peripheral inductive coupling antenna 33 of feed antennas 32, may extend away The electrical length of feed antennas 32, so as to reduce the size of feed antennas 32.By being opened up on induction antenna 33 towards feed The opening 331 of antenna 32, make induction antenna 33 that there is capacitor and inductor characteristic to offset SIM chip 20, battery of mobile phone, metallic plate etc. Interference to RFID antenna, so as to expand the communication distance of RFID chip 31 and electronic tag, enhance RFID chip 31 with The communication quality of electronic tag, that is, increase effective reading/writing distance of RFID read-write unit 30, enhance RFID read-write unit 30 Read-write quality.

In a particular embodiment, the RFID chip 31 uses characteristic impedance as 50 ohm of microstrip feed line feed to feed Antenna 32.It for 50 ohm of microstrip feed line is to take into account the advantages such as pressure-resistant, power transmission and loss to use characteristic impedance.

Further, the position of projection of the RFID read-write unit 30 on the first face 111 and the SIM chip 20 Position is corresponding, and the RFID read-write unit 30 is located in the profile 14 of Micro SIM cards.

In a particular embodiment, the SIM card 100 can be Mini SIM cards, or Micro SIM cards.Work as SIM When card 100 is Micro SIM cards, because the outside of feed antennas 32, which is provided with induction antenna 33, adds feed antennas 32 Electrical length, so as to reduce the size of feed antennas 32, so as to reduce the size of RFID read-write unit 30, so as to direct The RFID read-write unit 30 is arranged in Micro SIM cards, Micro SIM cards can be inserted into Mini SIM again when needed In card.When SIM card is Mini SIM cards, RFID read-write unit 30 is arranged in the profile 14 that can cut Micro SIM cards, Mini SIM cards can be cut to Micro SIM cards so that basis is actually needed, so as to expand the scope of application of SIM card 100 And application scenarios, so that SIM card can be applied to various mobile phones.Particularly present mobile phone terminal product is more and more frivolous, collection Volumetric spaces into the Micro SIM cards for having RFID read-write unit 30 are very dominant.

Further, also referring to Fig. 2 and Fig. 4, in order to reduce interference of the SIM chip 20 to feed antennas 32, it is necessary to Feed antennas 32 is avoided to the ungrounded Pin of SIM chip 20, and because the GND metal terminals 24 of SIM chip 20 are ground connection pin, It will not produce interference to feed antennas 32.So position and the SIM of projection of the RFID chip 31 on the first face 111 The VCC metal terminals 21 of chip 20 and the position of RST metal terminals 22 are corresponding, and first extension 322 is in the first face 111 On projection position it is corresponding with the position of the GND metal terminals 24 of SIM chip 20, second extension 323 is with being connected 321 projection on the first face 111 of section is set around SIM chip 20.

The utility model SIM card 100, by the way that RFID chip 31 is golden in the corresponding position projected in the first face 111 and VCC The position of category terminal 21 and RST metal terminals 22 is corresponding, while the first extension 322 is projected in the corresponding of the first face 111 Position is corresponding with GND metal terminals 24, the second extension 323 is enclosed with corresponding projection of the linkage section 321 in the first face 111 Around the SIM chip 20, so as to reduce interference of the SIM chip 20 to feed antennas 32, so as to expand RFID chip 31 with The communication distance of electronic tag, enhance RFID chip 31 and the communication quality of electronic tag.

In a particular embodiment, the RFID chip 31 can be rectangle, or circular；The feed antennas 32 is Loop aerial, its shape can be rectangle, or it is circular, can also be ellipse, the shape of the induction antenna 33 with The shape adaptation of the feed antennas 32.In the present embodiment, the RFID chip 31 is rectangle, the shape of the feed antennas 32 Shape is rectangle, and the linkage section 321 is the adjacent both sides of rectangle, and the induction antenna 33 is also rectangle, first extension The extension 323 of section 322 and second is respectively perpendicular to 31 liang of adjacent both sides of RFID chip, so that the He of the first extension 322 Second extension 323 is mutually perpendicular to.The utility model SIM card 100, by the way that feed antennas 32 is arranged into rectangle, can effectively it subtract The size of small RFID antenna.

In a particular embodiment, the extension 323 of the first extension 322 and second is perpendicular to the adjacent of RFID chip 31 Both sides can be proximate to the both sides of feed antennas 32, in this case, the other both sides of the RFID chip 31 are not fed Antenna 32 surrounds；Can also be the both sides away from feed antennas 32, in this case, the other both sides position of the RFID chip 31 In the inner side of the feed antennas 32.In the present embodiment, referring to Fig. 3, preferably, first extension 322 and second Extension 323 is respectively perpendicular to 31 liang of adjacent both sides of RFID chip, and the two adjacent both sides of the RFID chip 31 are located at Between 31 other two adjacent both sides of RFID chip and feed antennas 32, i.e., 31 liang of the RFID chip as shown in Figure 3 is adjacent Both sides be respectively downside and left side, to reduce interference of the RFID chip 31 to feed antennas 32, while feed antennas can be reduced 32 size.

Further, referring to Fig. 3, periphery of the induction antenna 33 along feed antennas 32 is set around feed antennas 32 Put.

Further, Fig. 1 and Fig. 3 are referred to, the feed antennas 32 and induction antenna 33 are planar structure.

In a particular embodiment, for the ease of the integrated of the RFID antenna, the feed antennas 32 and induction antenna 33 To be printed in the particular electrical circuit on the second face 121 according to predetermined design.

In a particular embodiment, the length of the feed antennas 32 is the signal wave that the feed antennas 32 is received or launched Long 1/4.The length and/or width of the feed antennas 32 be it is adjustable, the length of the induction antenna 33 and/or with feed The spacing of antenna 32 is adjustable.

When the length of feed antennas 32 is too short, and the feed antennas 32 receives or launches high-frequency signal, can be produced from humorous Shake, when the length of feed antennas 32 is long, and the feed antennas 32 receives or launches low frequency signal, can also produce self-resonance, So as to which feed antennas 32 can be caused not radiate.So in the present embodiment, in order that the transmitting and reception of feed antennas 32 turn Change efficiency and reach highest, the 1/ of signal wavelength that the length of feed antennas 32 is arranged to that the feed antennas 32 receives or launch 4。

And the induction antenna 33 is coupling in the outside of feed antennas 32, the induction antenna 33 extends feed antennas 32 electrical length.The size of the induction antenna 33 and its size of upper shed 331 are by feed antennas 32 and the feed Antenna 32 receives or the frequency of signal launched determines.When the frequency for the signal that the feed antennas 32 is received or launched determines Afterwards, can be by continuing to optimize the length and/or width of regulation feed antennas 32, while regulation induction antenna 33 is continued to optimize therewith Length and/or reduce the size of feed antennas 32 with the spacing of feed antennas 32, while to weaken SIM chip 20, mobile phone The interference to feed antennas 32 such as battery, metallic plate.RFID antenna can be optimized by using microwave software, particularly optimized The size of opening 331.

In the present embodiment, 2.4GHz frequencies can be completely covered in the RFID antenna, with wide.

Further, in order to weaken interference of the SIM chip 20 to feed antennas 32, referring to Fig. 5, the SIM card body bag First medium layer 11, ground plane 13 and second dielectric layer 12 are included, the ground plane 13 is located at Jie of first medium layer 11 and second Between matter layer 12, the SIM chip 20 and RFID read-write unit 30 are respectively arranged at first medium layer 11 and second dielectric layer 12 On.Specifically, first face 111 is end face of the first medium layer 11 away from ground plane 13, second face 121 is second Jie End face of the matter layer 12 away from ground plane 13.

Further, the first medium layer 11 is made up of PVC and/or ABS.

Further, the second dielectric layer 12 is made up of PVC and/or ABS.

In the present embodiment, the first medium layer 11 is made up of PVC and ABS, the second dielectric layer 12 by PVC and ABS is made.Wherein, PVC material manufacture craft is simple, has the effect of certain flame-resistant insulation, intensity enhancing, is not easily broken；ABS Grain plate matter is hard, is easy to print, can be very good in top layer printed antenna.The first medium layer 11 and second of the present embodiment SIM card Dielectric layer 12 is made by PVC and/or ABS, to integrate the good characteristic of two kinds of materials in one.

In a particular embodiment, the material of the ground plane can be gold or copper etc., preferably copper.

Should be especially, it is emphasized that the new SIM card 100 of this implementation at least has the advantages that：

1) by setting SIM chip 20 and RFID read-write unit 30 to be inserted with SIM card respectively on the two sides of SIM card body 10 100 GSM or CDMA mobile phones can both be used as regular handset to carry out conventional communications, can be used as RFID read-write device again to electronics Label is written and read, so that GSM the or CDMA mobile phones for being inserted with SIM card 100 are applicable to atypia field, especially hand Machine on-site payment and field of identity authentication.

2) by the way that the first extension 322 of feed antennas 32 and the second extension 323 are vertically arranged so that feed antennas Electric current constant amplitude, the phase at 32 both ends differ 90 degree, so as to realize the circular polarization radiation of feed antennas 32, so as to which convenient control feeds day The axle ratio of line 32.

3) by the peripheral inductive coupling antenna 33 of feed antennas 32, may extend away the electrical length of feed antennas 32, so as to Reduce the size of feed antennas 32.

4) by opening up the opening 331 towards feed antennas 32 on induction antenna 33, make induction antenna 33 that there is electric capacity Inductance characteristic is to offset the interference to feed antennas 32 such as SIM chip 20, battery of mobile phone, metallic plate, so as to expand RFID cores The communication distance of piece 31 and electronic tag, RFID chip 31 and the communication quality of electronic tag are enhanced, that is, increase RFID readings Effective reading/writing distance of r/w cell 30, the read-write quality for enhancing RFID read-write unit 30.

5) the RFID antenna size is small so that and the RFID unit 30 is located in the profile 14 of Micro SIM cards, so as to So that Micro SIM cards can be cut into when SIM card 100 is Mini SIM cards, also SIM card directly can be designed as Micro SIM card, so that SIM card can be applied to various mobile phones

6) RFID antenna uses planar structure, is easily integrated.

7) SIM card 100 can effectively weaken interference of the SIM chip 20 to feed antennas 32 using the design of two-layered medium layer, from And increase effective reading/writing distance of RFID read-write unit 30, enhance the read-write quality of RFID read-write unit 30.

Preferred embodiment of the present utility model is the foregoing is only, not thereby limits the scope of the claims of the present utility model, Every equivalent structure change under inventive concept of the present utility model, made using the utility model specification and accompanying drawing content Change, or directly/be used in other related technical areas indirectly and be included in scope of patent protection of the present utility model.

Claims

A kind of 1. SIM card, it is characterised in that including：

SIM card body, there is the first face and second face opposite with first face；

SIM chip, it is integrated in the first face of the SIM card body；And

RFID read-write unit, is integrated in the second face of the SIM card body, and the RFID read-write unit includes RFID chip, feed Antenna and the induction antenna coupled with the feed antennas, the RFID chip electrically connect with the SIM chip, the feed Antenna includes the first extension being connected respectively with the RFID chip and the second extension and connection first extension It is vertical with the second extension with the linkage section of the second extension, first extension；The induction antenna is located at the feed The periphery of antenna.
2. SIM card as claimed in claim 1, it is characterised in that offered on the induction antenna towards the feed antennas Opening.
3. SIM card as claimed in claim 1, it is characterised in that the RFID read-write unit is located at the profile of Micro SIM cards It is interior.
4. SIM card as claimed in claim 3, it is characterised in that the position of projection of the RFID chip on first face Put corresponding with the position of the VCC metal terminals of the SIM chip and RST metal terminals, first extension is described The position of projection on simultaneously is corresponding with the position of the GND metal terminals of the SIM chip, second extension with it is described Projection of the linkage section on first face is set around the SIM chip.
5. SIM card as claimed in claim 1, it is characterised in that the feed antennas is rectangle, and the linkage section is the square The adjacent both sides of shape.
6. the SIM card as described in claim 1 to 5 is any, it is characterised in that the induction antenna is outer along the feed antennas Set around the feed antennas.
7. the SIM card as described in claim 1 to 5 is any, it is characterised in that the feed antennas and induction antenna are planar junction Structure.
8. SIM card as claimed in claim 7, it is characterised in that the SIM card body include first medium layer, ground plane and Second dielectric layer, the ground plane is between the first medium layer and second dielectric layer, the SIM chip and RFID read-write Unit is respectively arranged in the first medium layer and second dielectric layer.
9. SIM card as claimed in claim 8, it is characterised in that

The first medium layer is made up of PVC and/or ABS；And/or

The second dielectric layer is made up of PVC and/or ABS.
10. the SIM card as described in claim 1 to 5 is any, it is characterised in that the RFID chip is rectangle, and described first prolongs Stretch section and the second extension is respectively perpendicular to the adjacent both sides of the RFID chip two.