CN206991351U - Shielding device and shield card - Google Patents
Shielding device and shield card Download PDFInfo
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- CN206991351U CN206991351U CN201621336826.6U CN201621336826U CN206991351U CN 206991351 U CN206991351 U CN 206991351U CN 201621336826 U CN201621336826 U CN 201621336826U CN 206991351 U CN206991351 U CN 206991351U
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- shielding device
- switching tube
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- antenna
- card
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Abstract
The utility model discloses a kind of shielding device and shield card.Shielding device includes：Antenna and screened circuit, screened circuit include：Control unit and oscillating unit, control unit include：Diode, switching tube and the first inductance, the positive pole of diode and the first end of antenna connect, and the negative pole of diode and the control terminal of switching tube and oscillating unit connect；First inductance connection is between the first path terminal and control terminal of switching tube, and the first path terminal of switching tube and the second end of antenna are connected, and the alternate path end of switching tube is connected with oscillating unit.By the way that with upper type, the utility model product structure is small, ultra-thin, is easy to carry, and can be applicable the information screen of the near-field communication card of various sizes.
Description
Technical field
Shield technology field is the utility model is related to, more particularly to a kind of shielding device and shield card.
Background technology
With radio frequency identification (Radio Frequency Identification, RFID) technology develop, at present we
Most of bank cards and certificate all using RFID technique storage information, pass through near-field communication (Near Field
Communication, NFC) mobile phone or other read write line cans steal every sky, and card and personal information are likely at any time
It is exposed and propagates, undesirable has payment function by high power read-write equipment close to release and bank card etc.
The consumer of nfc card, to reach the personal information of theft consumer and bank information etc., stolen by technical finesse to reach
The amount of money.
The product of current screening type existing on the market, because packaging technology and appearance design, it is impossible to meet client
It is required, do not reach much needed for current market for the screening range of type of card.
Utility model content
The utility model embodiment provides a kind of shielding device and shield card, and product structure is small, ultra-thin, is easy to take
Band, the information screen of the near-field communication card of various sizes can be applicable.
The utility model provides a kind of shielding device, including antenna and screened circuit, screened circuit include：Control unit and
Oscillating unit, control unit include：Diode, switching tube and the first inductance, the positive pole of diode and the first end of antenna connect
Connect, the negative pole of diode and the control terminal of switching tube and oscillating unit connect；First inductance connection is led to the first of switching tube
Between terminal and control terminal, the first path terminal of switching tube and the second end of antenna connect, and the alternate path end of switching tube is with shaking
Swing unit connection.
Wherein, antenna obtains electromagnetic signal, and electric signal is converted to by diode, and controlling switch pipe turns on, transmit to
Oscillating unit, high-frequency signal is generated after oscillating unit High frequency amplification and is launched by antenna.
Wherein, oscillating unit includes：Second inductance, resistance and electric capacity, the first end of the second inductance and the of switching tube
Two path terminals connect, and the second end of the second inductance and the first end of resistance connect, and the second end of resistance and the negative pole of diode connect
Connect, electric capacity is connected in parallel on the both ends of resistance.
Wherein, switching tube is the NPN transistor or PNP transistor of junction type, and the control terminal of switching tube is base stage, the first path
It is emitter stage to hold as colelctor electrode, alternate path end.
Wherein, switching tube is NMOS tube or PMOS, and the control terminal of switching tube is grid, and the first path terminal is drain electrode, the
Two path terminals are source electrode.
Wherein, the screening range of shielding device is between 1.5-4CM.
The utility model also provides a kind of shield card, including：First shield card substrate layer, secondary shielding card substrate layer and
Foregoing shielding device, shielding device are arranged between the first shield card substrate layer and secondary shielding card substrate layer.
Wherein, shield card also includes first surface process layer and second surface process layer, and first surface process layer is arranged on
The surface relative with shielding device of first shield card substrate layer, second surface process layer are arranged on secondary shielding card substrate layer
The surface relative with shielding device.
Wherein, shielding device also includes shielding device substrate layer, aerial coil layer and electronic component layer, antenna loop around
Aerial coil layer is formed, screened circuit forms electronic component layer, and shielding device substrate layer is arranged on aerial coil layer, electronics
Component layer is arranged on shielding device substrate layer.
Wherein, the projected area of shielding device in the horizontal direction is the half of the area of shield card.
By such scheme, the beneficial effects of the utility model are：Screened circuit of the present utility model, including：Including day
Line and screened circuit, screened circuit include：Control unit and oscillating unit, control unit include：Diode, switching tube and
First inductance, the positive pole of diode and the first end of antenna connect, the negative pole of diode and the control terminal of switching tube and vibration
Unit connects；First inductance connection is between the first path terminal and control terminal of switching tube, the first path terminal and day of switching tube
The second end connection of line, the alternate path end of switching tube is connected with oscillating unit；Product structure is small, ultra-thin, is easy to carry, energy
Enough it is applicable the information screen of the near-field communication card of various sizes.
Brief description of the drawings
, below will be to needed for embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
The accompanying drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some realities of the present utility model
Example is applied, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to these accompanying drawings
Obtain other accompanying drawings.Wherein：
Fig. 1 is the structural representation of the shielding device of the utility model embodiment；
Fig. 2 is the structural representation of the shield card of the utility model embodiment；
Fig. 3 is the dimensional structure diagram of the shielding device of the utility model embodiment.
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 describe, it is clear that described embodiment is only the utility model part of the embodiment, rather than all real
Apply example.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of performing creative labour is made
The every other embodiment obtained, belong to the scope of the utility model protection.
Fig. 1 is the structural representation of the shielding device of the utility model embodiment, and as described in Figure 1, shielding device 10 includes
Antenna 11 and screened circuit 12.Wherein, screened circuit 12 includes：Control unit 121 and oscillating unit 122.Control unit 121 is wrapped
Include：Diode D1, switching tube Q1 and the first inductance L1, diode D1 positive pole are connected with the first end of antenna 11, diode
D1 negative pole is connected with switching tube Q1 control terminal and oscillating unit 122；First inductance L1 is connected to the first of switching tube Q1
Between path terminal and control terminal, switching tube Q1 the first path terminal is connected with the second end of antenna 11, and the second of switching tube Q1 is logical
Terminal is connected with oscillating unit 122.
In the utility model embodiment, oscillating unit 122 includes：Second inductance L2, resistance R and electric capacity C.Second electricity
Sense L2 first end is connected with switching tube Q1 alternate path end, and the second inductance L2 the second end is connected with resistance R first end,
Resistance R the second end is connected with diode D1 negative pole, and electric capacity C is connected in parallel on resistance R both ends.
Wherein, switching tube Q1 can be the NPN transistor or PNP transistor of junction type, and the control terminal of switching tube is base stage, the
One path terminal is colelctor electrode, and alternate path end is emitter stage.Switching tube Q1 can also be NMOS tube or PMOS, the control of switching tube
End processed is grid, and the first path terminal is drain electrode, and alternate path end is source electrode.
In the utility model embodiment, antenna 11 obtains electromagnetic signal, is converted to electric signal by diode D1, and control
Switching tube Q1 conductings processed, are transmitted to oscillating unit 122, high-frequency signal are generated after the High frequency amplification of oscillating unit 122 and by antenna
11 launch.Specifically, antenna 11 obtains electromagnetic signal, is converted to electric signal by diode D1, forms 3V or so electricity
Source energy, antenna 11 are combined into a local oscillation circuit with screened circuit 12, the electric signal of corresponding frequencies are produced, via switching tube Q1
After power amplification, antenna 11 launches high-frequency signal of the high-power frequency in 10M-20MHZ.Now, the high-frequency signal is with disappearing
Expense card body mutually produces the interference of signal, the decay of energy, so that read write line can not normally read the purpose of consumption card.
In the utility model embodiment, the screening range of shielding device 10 is between 1.5-4CM.The knot of shielding device 10
Structure is small, ultra-thin, is easy to carry, and can be applicable the information screen of the near-field communication card of various sizes.
Fig. 2 is the structural representation of the shield card of the utility model embodiment.As shown in Fig. 2 shield card 1 includes：First
Shield card substrate layer 20, secondary shielding card substrate layer 30 and foregoing shielding device 10, shielding device 10 are arranged on the first screen
Cover between card substrate layer 20 and secondary shielding card substrate layer 30.
In the utility model embodiment, shield card 1 also includes first surface process layer 40 and second surface process layer 50.
First surface process layer 40 is arranged on the surface relative with shielding device 10 of the first shield card substrate layer 20, second surface processing
Layer 50 is arranged on the surface relative with shielding device 12 of secondary shielding card substrate layer 30.
Referring to Fig. 3, shielding device 10 also includes shielding device substrate layer 13, aerial coil layer 11 and electronic component layer
12.Antenna 11 forms electronic component layer 12 around aerial coil layer 11, screened circuit 12 is formed, and shielding device substrate layer 13 is set
Put on aerial coil layer 11, electronic component layer 12 is arranged on shielding device substrate layer 13.And aerial coil layer 11 is set
On the first shield card substrate layer 20, secondary shielding card substrate layer 30 is set on electronic component layer 12.Shielding device 10 is in water
Square to projected area for shield card 1 area half.The shield card product structure is small, ultra-thin, is easy to carry,
The information screen of the near-field communication card of various sizes can be applicable.
In summary, screened circuit of the present utility model, including：Including antenna and screened circuit, screened circuit includes：Control
Unit and oscillating unit processed, control unit include：Diode, switching tube and the first inductance, the positive pole of diode and antenna
First end connects, and the negative pole of diode and the control terminal of switching tube and oscillating unit connect；First inductance connection is in switching tube
The first path terminal and control terminal between, the second end of the first path terminal of switching tube and antenna connects, and the second of switching tube is logical
Terminal is connected with oscillating unit；Product structure is small, ultra-thin, is easy to carry, and can be applicable the near-field communication card of various sizes
Information screen.
Embodiment of the present utility model is the foregoing is only, not thereby limits the scope of the claims of the present utility model, it is every
The equivalent structure or equivalent flow conversion made using the utility model specification and accompanying drawing content, or be directly or indirectly used in
Other related technical areas, similarly it is included in scope of patent protection of the present utility model.
Claims (10)
1. a kind of shielding device, it is characterised in that the shielding device includes antenna and screened circuit, the screened circuit bag
Include：Control unit and oscillating unit, described control unit include：Diode, switching tube and the first inductance, the diode
Positive pole be connected with the first end of the antenna, the control terminal of the negative pole of the diode and the switching tube and the vibration
Unit connects；First inductance connection is between the first path terminal and the control terminal of the switching tube, the switching tube
First path terminal be connected with the second end of the antenna, the alternate path end of the switching tube connects with the oscillating unit
Connect.
2. shielding device according to claim 1, it is characterised in that the antenna obtains electromagnetic signal, by described two
Pole pipe is converted to electric signal, and controls the switching tube to turn on, and transmits to the oscillating unit, is put through the oscillating unit high frequency
High-frequency signal is generated after big and is launched by the antenna.
3. shielding device according to claim 1, it is characterised in that the oscillating unit includes：Second inductance, resistance with
And electric capacity, the first end of second inductance are connected with the alternate path end of the switching tube, the second end of second inductance
It is connected with the first end of the resistance, the second end of the resistance is connected with the negative pole of the diode, and the electric capacity is connected in parallel on
The both ends of the resistance.
4. shielding device according to claim 1, it is characterised in that the switching tube is the NPN transistor or PNP of junction type
Transistor, the control terminal of the switching tube is base stage, and first path terminal is colelctor electrode, and the alternate path end is transmitting
Pole.
5. shielding device according to claim 1, it is characterised in that the switching tube is NMOS tube or PMOS, described
The control terminal of switching tube is grid, and first path terminal is drain electrode, and the alternate path end is source electrode.
6. shielding device according to claim 1, it is characterised in that the screening range of the shielding device is 1.5-4CM
Between.
7. a kind of shield card, it is characterised in that the shield card includes：First shield card substrate layer, secondary shielding card substrate layer
And the shielding device as any one of claim 1-6, the shielding device are arranged on the first shield card base material
Between layer and the secondary shielding card substrate layer.
8. shield card according to claim 7, it is characterised in that the shield card also includes first surface process layer and the
Two surface-treated layers, the first surface process layer are arranged on the relative with the shielding device of the first shield card substrate layer
Surface, the second surface process layer is arranged on the table relative with the shielding device of the secondary shielding card substrate layer
Face.
9. shield card according to claim 7, it is characterised in that the shielding device also include shielding device substrate layer,
Aerial coil layer and electronic component layer, the antenna loop form electronics member around aerial coil layer, the screened circuit is formed
Device layer, the shielding device substrate layer are arranged on the aerial coil layer, and the electronic component layer is arranged on the screen
Cover on device substrate layer.
10. shield card according to claim 7, it is characterised in that the projected area of the shielding device in the horizontal direction
For the half of the area of the shield card.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621336826.6U CN206991351U (en) | 2016-12-07 | 2016-12-07 | Shielding device and shield card |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621336826.6U CN206991351U (en) | 2016-12-07 | 2016-12-07 | Shielding device and shield card |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206991351U true CN206991351U (en) | 2018-02-09 |
Family
ID=61421589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621336826.6U Active CN206991351U (en) | 2016-12-07 | 2016-12-07 | Shielding device and shield card |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206991351U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109409155A (en) * | 2018-10-19 | 2019-03-01 | 湖北用芯物联科技有限公司 | A kind of radio frequency signal shield circuit and shield card |
-
2016
- 2016-12-07 CN CN201621336826.6U patent/CN206991351U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109409155A (en) * | 2018-10-19 | 2019-03-01 | 湖北用芯物联科技有限公司 | A kind of radio frequency signal shield circuit and shield card |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180830 Address after: 518000 Guanlan Street, Longhua New District, Shenzhen City, Guangdong Province Patentee after: Shenzhen City, stone material science and Technology Co. Fuqua Address before: 518110 5 Floors of C Building 168, Baoguan Science Park, Guanlan Zhangge Community, Guanlan Street, Longhua New District, Shenzhen City, Guangdong Province Co-patentee before: Li Huaiguang Patentee before: Shenzhen City, stone material science and Technology Co. Fuqua |
|
| TR01 | Transfer of patent right |