CN207010672U - Wireless communication module - Google Patents
Wireless communication module Download PDFInfo
- Publication number
- CN207010672U CN207010672U CN201721007533.8U CN201721007533U CN207010672U CN 207010672 U CN207010672 U CN 207010672U CN 201721007533 U CN201721007533 U CN 201721007533U CN 207010672 U CN207010672 U CN 207010672U
- Authority
- CN
- China
- Prior art keywords
- wireless communication
- communication module
- resistance
- port
- connector
- 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.)
- Active
Links
Landscapes
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Abstract
The utility model provides a kind of wireless communication module, including two USB pins, two resistance, one common mode inductance and a connector, wherein the first USB pins are connected to first resistor, 2nd USB pins are connected to second resistance, and the first resistor is connected in parallel to a common mode inductance with second resistance, the USB pins are connected to the connector by the resistance or the common mode inductance, the setting of the common mode inductance being capable of filter electromagnetic interference signal, play a part of EMI filtering, the problem of so as to avoid wireless communication module from producing electromagnetic interference, improve the reliability of wireless communication module, and facilitate EMI debugging and certification.Further; the first end of each resistance is connected to USB pins; second end of each resistance is connected to earth terminal by an electrostatic protector; the setting of the electrostatic protector can prevent wireless communication module from producing electrostatic problem; the reliability of wireless communication module is further increased, and facilitates ESD debugging and certification.
Description
Technical field
Electronic technology field is the utility model is related to, more particularly to a kind of wireless communication module for realizing WIFI function.
Background technology
In the prior art, WIFI (Wireless Fidelity, WLAN) designs typically pass through RTL8912DU cores
Piece (chip model) realizes its WIFI function, but when RTL8912DU chips run out of goods or stop production, generally use
RTL8812AU chips (chip model) replace, to avoid product from can not normally being produced because lacking material.Also, RTL8812AU cores
Piece has the advantages of cheap, supply chain is normal.
But electromagnetic interference (EMI) problem often occurs when setting on circuit boards in RTL8812AU and its peripheral circuit
Or electrostatic (ESD) problem, cause the function of the chip to be affected, and had influence on the normal work of other electronic equipments.
Therefore how to avoid the chip that electromagnetic interference and electrostatic problem occurs, be those skilled in the art's urgent need to resolve
Technical problem.
Utility model content
The purpose of this utility model is to provide a kind of wireless communication module, can avoid electromagnetic interference and electrostatic.
The technical solution of the utility model is a kind of wireless communication module, including：Two USB pins, two resistance, have altogether
Mould inductance and a connector, wherein the first USB pins are connected to first resistor, the 2nd USB pins are connected to second resistance, and
And the first resistor is connected in parallel to the common mode inductance with second resistance, the USB pins pass through the resistance or the common mode
Inductance connection is to the connector.
Further, the common mode inductance includes magnetic core, two coils around the magnetic core, and from described two lines
Four ports drawn are enclosed, the both ends of the first resistor are connected in parallel to from two ports that a coil is drawn, from another line
Two ports that circle is drawn are connected in parallel to the both ends of the second resistance.
Further, the wireless communication module also includes two electric capacity, and one end of the first electric capacity is connected to described first
USB pins, the other end of first electric capacity are connected to the first end of the first resistor, and one end of the second electric capacity is connected to institute
The 2nd USB pins are stated, the other end of second electric capacity is connected to the first end of the second resistance.
Further, the wireless communication module also includes two electrostatic protectors, and one end of the first electrostatic protector connects
The second end of the first resistor is connected to, the other end of first electrostatic protector is connected to earth terminal, the second electrostatic protection
One end of device is connected to the second end of the second resistance, and the other end of second electrostatic protector is connected to the ground connection
End.
Further, the wireless communication module also includes multiple test points, and the connector has multiple ports, described
Port connects the test point and the USB pins.
Further, the connector has six ports, and six ports connect four test points and managed with two USB
Pin.
Further, the wireless communication module also includes a supply voltage, and the first port of the connector is connected to
The supply voltage, and the first port is connected to the first test point.
Further, the second port of the connector is connected to the second end of the second resistance, and described second
Port is connected to the second test point；3rd port of the connector is connected to the second end of the first resistor, and described
3rd port is connected to the 3rd test point.
Further, the 4th port of the connector is connected to the 4th test point, and the 4th end of the connector
Mouth, fifth port and the 6th port are connected to the earth terminal.
Further, the wireless communication module also includes one the 3rd electrostatic protector, the 3rd electrostatic protector
One end is connected to the supply voltage, and the other end of the 3rd electrostatic protector is connected to the earth terminal.
Compared with prior art, wireless communication module provided by the utility model, including two USB pins, two resistance
And common mode inductance and an a connector, wherein the first USB pins are connected to first resistor, the 2nd USB pins are connected to
Two resistance, and the first resistor is connected in parallel to a common mode inductance with second resistance, and the USB pins pass through the resistance or institute
State common mode inductance and be connected to the connector, the setting of the common mode inductance can filter electromagnetic interference signal, play EMI filtering
Effect, the problem of so as to avoid wireless communication module from producing electromagnetic interference, improve the reliability of wireless communication module, and
Facilitate EMI debugging and certification.
Further, the first end of each resistance is connected to USB pins, and the second end of each resistance passes through an electrostatic
Protector is connected to earth terminal, and the setting of the electrostatic protector can prevent wireless communication module from producing electrostatic problem, enter one
Step improves the reliability of wireless communication module, and facilitates ESD debugging and certification.
Brief description of the drawings
The part-structure signal of the peripheral circuit for the wireless communication module that Fig. 1 is provided by the embodiment of the utility model one
Figure.
Embodiment
The utility model provides a kind of wireless communication module, including：Two USB pins, two resistance, a common mode inductance with
And a connector, wherein the first USB pins are connected to first resistor, the 2nd USB pins are connected to second resistance, and described
One resistance is connected in parallel to the common mode inductance with second resistance, and the USB pins are connected by the resistance or the common mode inductance
To the connector.
Wireless communication module provided by the utility model, the setting of the common mode inductance can filter electromagnetic interference signal,
Play a part of EMI filtering, so as to avoid wireless communication module produce electromagnetic interference the problem of, improve wireless communication module
Reliability, and facilitate EMI debugging and certification.
To make content of the present utility model more clear understandable, below in conjunction with Figure of description, to of the present utility model interior
Appearance is described further.Certain the utility model is not limited to the specific embodiment, well known to the skilled artisan in the art
General replace is also covered by the scope of protection of the utility model.
Secondly, the utility model has carried out detailed statement using schematic diagram, when the example of the utility model is described in detail, in order to
It is easy to illustrate, schematic diagram, should not be to this as restriction of the present utility model not according to general proportion partial enlargement.
The part-structure signal of the peripheral circuit for the wireless communication module that Fig. 1 is provided by the embodiment of the utility model one
Figure, as shown in figure 1, the wireless communication module 10 includes multiple pins, two pins therein are USB pins, i.e. the first USB
Pin HSDP and the 2nd USB pins HSDM；The wireless communication module 10 also includes two resistance, a common mode inductance and a company
Meet device, such as first resistor R1 and second resistance R2, common mode inductance L20 and connector J.Specifically, the first USB pins HSDP
It is connected to first resistor R1, the 2nd USB pins HSDM and is connected to second resistance R2, and the first resistor R1 and second resistance
R2 is connected in parallel to a common mode inductance L20, and the USB pins are connected to the connector J by the resistance or the common mode inductance,
That is, the wireless communication module is in use, the first USB pins HSDP is connected to by the first resistor R1
The connector J, the 2nd USB pins HSDM are connected to the connector J, or described by the second resistance R2
One USB pins HSDP and the 2nd USB pins HSDM are connected to the connector J by the common mode inductance L20.
Further, the common mode inductance L20 includes magnetic core, around two coils of the magnetic core, described two coils
The number of turn and phase it is all identical, coiling is reverse, and from four ports that described two coils are drawn, wherein from a coil
Two ports drawn (close to second resistance R2 coil in such as Fig. 1) are respectively first port 1 and second port 2, from another
Two ports that individual coil (coil away from second resistance R2 in such as Fig. 1) is drawn are respectively the 3rd port 3 and the 4th port 4.
Wherein, the first port 1 and second port 2 are connected in parallel to the first resistor R1, i.e., described first port 1 is connected to described the
One resistance R1 first end, the second port 2 are connected to the second end of the first resistor 1；3rd port 3 and the 4th
Port 4 is connected in parallel to the second resistance R2, i.e., described 3rd port 3 is connected to the first end of the second end resistance R2, described
4th port 4 is connected to the second end of the second resistance R2.Certainly, the common mode inductance L20 is not limited to the structure, also may be used
To be other structures well known by persons skilled in the art, but the common mode inductance L20 is four ports, is connected in four ports
Two ports (such as first port 1 and second port 2, or the 3rd port 3 and the 4th port 4) together are connected in parallel to described first
Resistance R1 or second resistance R2 both ends.
When the normal current in circuit flows through the common mode inductance L20, electric current is in the inductance coil of same-phase coiling
Produce reverse magnetic field and cancel out each other, now normal signal electric current is mainly influenceed by coil resistance, when there is common mode current stream
During through coil, due to the same tropism of common mode current, magnetic field in the same direction can be produced in coil and increases the induction reactance of coil, make coil
Surface is high impedance, produces stronger damping, with this attenuation common-mode electric current, reaches the purpose of filtering.The common mode inductance
L20 is substantially a bidirectional filter, on the one hand can filter out electromagnetic interference, and it is not outside on the other hand can to suppress itself again
Electromagnetic interference is sent, avoids influenceing the normal work of other electronic equipments under same electromagnetic environment.
Further, the wireless communication module 10 also includes two electric capacity, the first electric capacity C1 and the second electric capacity C2, described
First electric capacity C1 one end is connected to the first USB pin HSDP, and the other end of the first electric capacity C1 is connected to described
One resistance R1 first end, one end of the second electric capacity C2 are connected to the 2nd USB pin HSDM, the second electric capacity C2
The other end be connected to the first end of the second resistance R2.
The wireless communication module 10 also includes two electrostatic protectors, and the first electrostatic protector CR1 and the second electrostatic are protected
Shield device CR2, the first electrostatic protector CR1 one end are connected to the second end (the DP ends in such as Fig. 1) of the first resistor R1, institute
State the first electrostatic protector CR1 the other end be connected to earth terminal GND, the second electrostatic protector CR2 one end be connected to it is described
Second resistance R2 the second end (the DM ends in such as Fig. 1), the other end of the second electrostatic protector CR2 are connected to the ground connection
Hold GND.
That is, on the peripheral circuit of the wireless communication module 10, the first USB pins HSDP passes through described
First electric capacity C1 is connected to the earth terminal GND, while the first USB pins HSDP is additionally coupled to the first resistor R1's
First end, the second end of the first resistor R1 are connected to one end of the first electrostatic protector CR1, and first electrostatic is protected
The shield device CR1 other end is connected to earth terminal GND, and the first end of the first resistor R1 be additionally coupled to the second end it is described
Common mode inductance L20 two ports (first port 1 and second port 2).Likewise, the 2nd USB pins HSDM passes through institute
State the second electric capacity C2 and be connected to the earth terminal GND, while the 2nd USB pins HSDM is additionally coupled to the second resistance R2
First end, the second end of the second resistance R2 is connected to one end of the second electrostatic protector CR2, second electrostatic
The protector CR2 other end is connected to earth terminal GND, and the first end of the second resistance R2 is additionally coupled to institute with the second end
State common mode inductance L20 another two port (the 3rd port 3 and the 4th port 4).The setting of the common mode inductance L20 can avoid
Electromagnetic interference, the first electrostatic protector CR1 and the second electrostatic protector CR2 setting can avoid electrostatic, so that
The wireless communication module 10 can avoid electromagnetic interference and electrostatic, improve the function of the chip, while avoid influenceing other
The normal work of electronic equipment.Also, because the common mode inductance L20 and the first electrostatic protector CR1 and second are quiet
Non-electricity protector CR2 setting, facilitate the debugging and certification of electromagnetic interference and electrostatic.
Further, the wireless communication module 10 also includes multiple test point TP, and the connector J have it is multiple
Port, the port connecting test point and USB pins.Preferably, the connector J has six ports, respectively first end
Mouth J1, second port J2, the 3rd port J3, the 4th port J4, fifth port J5 and the 6th port J6, the test point have four
It is individual, respectively the first test point TP1, the second test point TP2, the 3rd test point TP3 and the 4th test point TP4.Need to illustrate
, the test point is only used for testing, and is easy to later stage production line to test the wireless communication module 10.It is described wireless
Communication module 10 is specifically used or being connected to mainboard with outside connecting line by the connector J uses.
The wireless communication module 10 also includes a supply voltage VSS, the first port J1 connections of first connector
To the supply voltage VSS, and the first port J1 is connected to the first test point TP1.The second port of the connector J
J2 is connected to the second end of the second resistance R2, and the second port J2 is connected to the second test point TP2；The connection
Device J the 3rd port J3 is connected to the second end of the first resistor R1, and the 3rd port J3 is connected to the 3rd test
Point TP3.The 4th port J4 of the connector J is connected to the 4th test point TP4, and the 4th port J4 of the connector J,
Fifth port J5 and the 6th port J6 are connected to the earth terminal GND.
Further, the wireless communication module also includes one the 3rd electrostatic protector CR3, the 3rd electrostatic protector
CR3 one end is connected to the supply voltage VSS, and the other end of the 3rd electrostatic protector CR3 is connected to the earth terminal
GND。
It is understood that the wireless telecommunications mould provided by the utility model for including common mode inductance and electrostatic protector
Block is RTL8812AU chips or there may be other chips of electromagnetic interference and electrostatic problem.When the channel radio
When news module is RTL8812AU chips, the magnitude of voltage of the supply voltage VSS is preferably 5V, the first electric capacity C1 and second
Electric capacity C2 model is preferably 10PF/0402, and the first resistor R1 and second resistance R2 model is preferably 0/0402, described
The preferable models of common mode inductance L20：DLP11TB800UL2L_4P, the first electrostatic protector CR1, the second electrostatic protection
Device CR2 and the 3rd electrostatic protector CR3 preferred model：ESD9N5BM-2/TR.Certainly, the utility model is only to provide
One preferred scheme, is not limited this.
In summary, wireless communication module provided by the utility model, including two USB pins, two resistance, a common mode
Inductance and a connector, wherein the first USB pins are connected to first resistor, the 2nd USB pins are connected to second resistance, and
The first resistor is connected in parallel to a common mode inductance with second resistance, and the USB pins pass through the resistance or the common mode inductance
Be connected to the connector, the setting of the common mode inductance can filter electromagnetic interference signal, play a part of EMI filtering, from
And the problem of avoiding wireless communication module from producing electromagnetic interference, the reliability of wireless communication module is improved, and facilitate EMI
Debugging and certification.
Further, the first end of each resistance is connected to USB pins, and the second end of each resistance passes through an electrostatic
Protector is connected to earth terminal, and the setting of the electrostatic protector can prevent wireless communication module from producing electrostatic problem, enter one
Step improves the reliability of wireless communication module, and facilitates ESD debugging and certification.
Foregoing description is only the description to the utility model preferred embodiment, not to any limit of the scope of the utility model
Calmly, any change, the modification that the those of ordinary skill in the utility model field does according to the disclosure above content, belonging to right will
Seek the protection domain of book.
Claims (10)
- A kind of 1. wireless communication module, it is characterised in that including：Two USB pins, two resistance, a common mode inductance and one Connector, wherein the first USB pins are connected to first resistor, the 2nd USB pins are connected to second resistance, and first electricity Resistance is connected in parallel to the common mode inductance with second resistance, and the USB pins are connected to institute by the resistance or the common mode inductance State connector.
- 2. wireless communication module as claimed in claim 1, it is characterised in that the common mode inductance includes magnetic core, around described Two coils of magnetic core, and from four ports that described two coils are drawn, the two port parallel connections drawn from a coil The extremely both ends of the first resistor, the both ends of the second resistance are connected in parallel to from two ports that another coil is drawn.
- 3. wireless communication module as claimed in claim 1, it is characterised in that the wireless communication module also includes two electricity Hold, one end of the first electric capacity is connected to the first USB pins, and the other end of first electric capacity is connected to the first resistor First end, one end of the second electric capacity is connected to the 2nd USB pins, and the other end of second electric capacity is connected to described The first end of two resistance.
- 4. wireless communication module as claimed in claim 3, it is characterised in that the wireless communication module also includes two electrostatic Protector, one end of the first electrostatic protector are connected to the second end of the first resistor, first electrostatic protector it is another One end is connected to earth terminal, and one end of the second electrostatic protector is connected to the second end of the second resistance, second electrostatic The other end of protector is connected to the earth terminal.
- 5. wireless communication module as claimed in claim 4, it is characterised in that the wireless communication module also includes multiple tests Point, the connector have multiple ports, and the port connects the test point and the USB pins.
- 6. wireless communication module as claimed in claim 5, it is characterised in that the connector has six ports, and described six Individual port connects four test points and two USB pins.
- 7. wireless communication module as claimed in claim 6, it is characterised in that the wireless communication module also includes power supply electricity Pressure, the first port of the connector is connected to the supply voltage, and the first port is connected to the first test point.
- 8. wireless communication module as claimed in claim 7, it is characterised in that the second port of the connector is connected to described Second end of second resistance, and the second port is connected to the second test point；3rd port of the connector is connected to Second end of the first resistor, and the 3rd port is connected to the 3rd test point.
- 9. wireless communication module as claimed in claim 8, it is characterised in that the 4th port of the connector is connected to the 4th Test point, and the 4th port of the connector, fifth port are connected to the earth terminal with the 6th port.
- 10. wireless communication module as claimed in claim 9, it is characterised in that the wireless communication module also includes one the 3rd Electrostatic protector, one end of the 3rd electrostatic protector are connected to the supply voltage, the 3rd electrostatic protector it is another One end is connected to the earth terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721007533.8U CN207010672U (en) | 2017-08-11 | 2017-08-11 | Wireless communication module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721007533.8U CN207010672U (en) | 2017-08-11 | 2017-08-11 | Wireless communication module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207010672U true CN207010672U (en) | 2018-02-13 |
Family
ID=61459520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721007533.8U Active CN207010672U (en) | 2017-08-11 | 2017-08-11 | Wireless communication module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207010672U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112384051A (en) * | 2020-11-03 | 2021-02-19 | 深圳市共进电子股份有限公司 | Floating device protection circuit and floating device protection equipment |
-
2017
- 2017-08-11 CN CN201721007533.8U patent/CN207010672U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112384051A (en) * | 2020-11-03 | 2021-02-19 | 深圳市共进电子股份有限公司 | Floating device protection circuit and floating device protection equipment |
| CN112384051B (en) * | 2020-11-03 | 2022-10-28 | 深圳市共进电子股份有限公司 | Floating device protection circuit and floating device protection equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8824570B2 (en) | Communications interface to differential-pair cabling | |
| CN201359725Y (en) | USB interface circuit and portable hand-held device provided with the circuit | |
| CN104426007B (en) | transmission line and filter module | |
| CN207021112U (en) | One kind combination magnetic material common mode inductance | |
| US8076990B2 (en) | Communications medium connector with integrated common-mode noise suppression | |
| CN202905391U (en) | Common mode inductor | |
| CN207010672U (en) | Wireless communication module | |
| CN205666852U (en) | MiniPCieCAN interface converting device | |
| CN2922307Y (en) | Ethernet interface isolating transformer central tap grounding circuit | |
| CN106897241A (en) | A kind of usb circuit and mobile terminal being applied in mobile terminal | |
| US9246466B2 (en) | Device for linking an electrical member to a communication line | |
| CN201878154U (en) | Anti-electromagnetic interference device based on CAN (controller area network) bus | |
| TWM466365U (en) | Noise filtering circuit for network signal coupling | |
| CN206892859U (en) | Can interface circuit | |
| TW201342844A (en) | Network signal coupling circuit | |
| CN205249608U (en) | Printed circuit board | |
| CN107919892A (en) | SPI communicates anti-jamming circuit | |
| CN202424764U (en) | Electromagnetic compatible anti-interference circuit | |
| CN203910415U (en) | Differential-common-mode inductor and inverter comprising inductor | |
| CN209593381U (en) | Network signal processing circuit | |
| CN205984507U (en) | Noise filter mounting structure | |
| CN105635918A (en) | Mobile terminal and current sound suppression circuit | |
| CN206993283U (en) | Interface circuit and interface system | |
| CN107317134A (en) | USB attachment means, USB fabric and terminal | |
| CN219626010U (en) | Interface circuit and electronic equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |