CN208548905U - Low-loss network information transfer device - Google Patents
Low-loss network information transfer device Download PDFInfo
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- CN208548905U CN208548905U CN201821151503.9U CN201821151503U CN208548905U CN 208548905 U CN208548905 U CN 208548905U CN 201821151503 U CN201821151503 U CN 201821151503U CN 208548905 U CN208548905 U CN 208548905U
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Abstract
The utility model provides a kind of low-loss network information transfer device, including casing, circuit board and several pins, and circuit board is equipped with network information transfer circuit；Network information transfer circuit includes that the first transformer, the second transformer and signal control chip, two input terminals of signal control chip are connected with two input terminals of the first transformer respectively, first transformer includes the first magnetic core, the first primary coil being wound on the first magnetic core and the first secondary coil being wound on the first magnetic core, first primary coil is twisted wire made of multi cord, and the first secondary coil is twisted wire made of multi cord.The first transformer is arranged in the utility model and signal can be enhanced in the second transformer, improves transmission range, is isolated from the outside die terminals, enhances anti-interference ability, protects to signal control chip；And twisted wire made of multi cord is used to can reduce insertion loss as the first primary coil and the first primary coil, and then reduce loss.
Description
Technical field
The utility model belongs to technical field of information transmission, is to be related to a kind of low-loss network information biography more specifically
Defeated device.
Background technique
Network information transfer module is common electronic component in information transmission.Network information transfer module be computer with
The module used required for a link in two-way exchange data voltage signal chain between server, signal pass through this module
When, inevitably have some decaying.Insertion loss is exactly a Xiang Zhibiao of gauge signal attenuation degree.Network information transfer
Transformer, the enameled wire that transformer generally comprises magnetic core and is wound on magnetic core, due to transformer pair can be generally used in module
Insertion loss has large effect, causes the loss of current network information transmission module larger.
Utility model content
The purpose of this utility model is to provide a kind of low-loss network information transfer devices, to solve to deposit in the prior art
The larger problem of network information transfer module loss.
In order to achieve the above purposes, the technical solution adopted by the utility model is: provides a kind of low-loss network information transfer
Device, including casing, the circuit board being installed in the casing and several pins drawn by the casing, each pin with
The circuit board is electrical connected, and the circuit board is equipped with network information transfer circuit；The network information transfer circuit includes
First transformer, the second transformer and signal control chip, and two input terminals of the signal control chip are respectively with described the
Two input terminals of one transformer are connected, in several pins: two pins respectively with first transformer two
A output end is connected, and two pins are connected with two signal ends of signal control chip respectively, two pins
It is connected respectively with two control terminals of signal control chip, four pins, two with second transformer respectively
Input terminal and the connection of two output ends, first transformer includes the first magnetic core, be wound on first magnetic core first
Primary coil and the first secondary coil being wound on first magnetic core, first primary coil are to twist made of multi cord
Line, first secondary coil are twisted wire made of multi cord.
Further, second transformer includes the second magnetic core, the primary line of second be wound on second magnetic core
The second subprime coil on second magnetic core is enclosed and is wound in, second primary coil is twisted wire made of multi cord, institute
Stating second subprime coil is twisted wire made of multi cord.
Further, the equal turn numbers of the number of turns of second primary coil and the second subprime coil.
Further, the equal turn numbers of the number of turns of first primary coil and first secondary coil.
Further, the anti-electromagnetic interference electricity for electromagnetic interference electric current to be released is connected between two signal ends
Road.
Further, the anti-electromagnetic interference circuit includes first resistor, second resistance, 3rd resistor and capacitor, described
First resistor is connected with the second resistance, and the 3rd resistor is in parallel with the capacitor, one end of the first resistor and one
A signal end be connected, one end of the second resistance is connected with signal end described in another, the first resistor it is another
End is connected with the other end of the second resistance, and the other end of the first resistor is connected with one end of the 3rd resistor, institute
State the other end ground connection of 3rd resistor.
Further, the impedance of the second resistance is equal to the impedance of the first resistor.
Further, the impedance of the 3rd resistor is 5K Ω, and the capacitor is 270pF.
Further, the circuit board is equipped at least two sets of network information transfer circuits.
Further, the signal control chip includes impedance matching network module and transmission drive module, the impedance
Two input terminals that two output ends of matching network module distinguish first transformer are connected, the impedance matching network mould
Two input terminals of block distinguish it is described send drive module two output ends be connected, set in the transmission drive module there are two
The control terminal and two signal ends.
The beneficial effect of low-loss network information transfer device provided by the utility model is: compared with prior art,
The first transformer is arranged in the utility model and signal can be enhanced in the second transformer, improves transmission range, makes die terminals and outside
Isolation enhances anti-interference ability, protects to signal control chip；And use twisted wire made of multi cord as the first primary
Coil and the first primary coil can reduce insertion loss, and then reduce loss.
Detailed description of the invention
It, below will be to embodiment or the prior art in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is only that this is practical new
Some embodiments of type for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the theory structure schematic diagram of low-loss network information transfer device provided by the embodiment of the utility model；
Fig. 2 is the schematic view of the front view of low-loss network information transfer device provided by the embodiment of the utility model；
Fig. 3 is the side structure schematic view of low-loss network information transfer device shown in Fig. 2.
Wherein, each attached drawing main mark in figure:
11- casing；12- pin；20- network information transfer circuit；21- signal controls chip；211-；212-；22- first
Transformer；The second transformer of 23-；The anti-electromagnetic interference circuit of 24-.
Specific embodiment
In order to which technical problem to be solved in the utility model, technical solution and beneficial effect is more clearly understood, with
Lower combination accompanying drawings and embodiments, the present invention will be further described in detail.It should be appreciated that specific reality described herein
It applies example to be only used to explain the utility model, is not used to limit the utility model.
It should be noted that it can be directly another when element is referred to as " being fixed on " or " being set to " another element
On one element or indirectly on another element.When an element is known as " being connected to " another element, it can
To be directly to another element or be indirectly connected on another element.
In addition, term " second ", " first " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " second " as a result, the feature of " first " can be expressed or
Implicitly include one or more of the features.The meaning of " plurality " is two or two in the description of the present invention,
More than, unless otherwise specifically defined." several " are meant that one or more, unless otherwise clearly specific limit
It is fixed.
In the description of the present invention, it should be understood that term " center ", " length ", " width ", " thickness ",
The orientation of the instructions such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" or
Positional relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of describing the present invention and simplifying the description,
Rather than the device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation, because
This should not be understood as limiting the present invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements or the interaction relationship of two elements.For those of ordinary skill in the art and
Speech, can understand the concrete meaning of above-mentioned term in the present invention as the case may be.
Also referring to Fig. 1 and Fig. 2, now low-loss network information transfer device provided by the utility model is said
It is bright.The low-loss network information transfer device, including casing 11, circuit board (not shown) and several pins 12, circuit
Plate is mounted in casing 11, by casing 11 come protection circuit plate.Circuit board includes PCB (printed wiring board).Electricity is installed on PCB
Subcomponent, to form circuit.Several pins 12 are mounted on casing 11, and one end of each pin 12 is mounted on casing 11, another
It draws outside casing 11 at end；Each pin 12 is electrical connected with circuit board.Further, PCB can be double-sided wiring board, to reduce body
Product.In further embodiments, PCB may be multilayer road plate, to reduce volume.
Circuit board is equipped with network information transfer circuit 20, carries out information transmission in a network to realize.The network information
Transmission circuit 20 includes that the first transformer 22, the second transformer 23 and signal control chip 21.Signal controls two of chip 21
Input terminal is connected with two input terminals of the first transformer 22 respectively, and it can be network chip or network interface card core that signal, which controls chip 21,
Piece.Network chip (networking processor) is that an offer sends and receives mathematical logic (packet in a communication network
Include sound and video) microprocessor.First transformer 22 is set and signal can be enhanced in the second transformer 23, improves transmission distance
From, be isolated from the outside die terminals, enhance anti-interference ability, to signal control chip 21 protect.
In several pins 12: two pins 12 are connected with two output ends of the first transformer 22 respectively, two pins 12
It is connected respectively with two signal ends of signal control chip 21, two pins 12, two controls with signal control chip 21 respectively
End is connected, and four pins 12 are connect with two input terminals of the second transformer 23 and two output ends respectively, with convenient to use.
First transformer 22 includes the first magnetic core (not shown), the first primary coil being wound on the first magnetic core
(not shown) and the first secondary coil (not shown) being wound on the first magnetic core, the first primary coil are multi cord
Manufactured twisted wire, the first secondary coil are twisted wire made of multi cord.Use twisted wire made of multi cord as the first primary line
Circle and the first primary coil, to reduce insertion loss.
Low-loss network information transfer device provided by the utility model, compared with prior art, the utility model setting
Signal can be enhanced in first transformer 22 and the second transformer 23, improves transmission range, is isolated from the outside die terminals, and enhancing is anti-
Interference performance protects signal control chip 21；And use twisted wire made of multi cord as the first primary coil and
One primary coil can reduce insertion loss, and then reduce loss.
Further, it also referring to Fig. 1 to Fig. 3, is filled as low-loss network information transfer provided by the utility model
A kind of specific embodiment set, the equal turn numbers of the number of turns of the first primary coil and the first secondary coil are mentioned with reducing loss
High anti-electromagnetic interference capability.
Further, it also referring to Fig. 1 to Fig. 3, is filled as low-loss network information transfer provided by the utility model
The axial direction of a kind of specific embodiment set, the first magnetic core of the first transformer 22 is spatially parallel to wiring board, and then subtracts
Influence of small first transformer 22 to device on wiring board reduces electromagnetic interference.
Further, it also referring to Fig. 1 to Fig. 3, is filled as low-loss network information transfer provided by the utility model
A kind of specific embodiment set, the second transformer 23 include the second magnetic core, the second primary coil being wound on the second magnetic core
With the second subprime coil being wound on the second magnetic core, the second primary coil is twisted wire made of multi cord, second subprime coil
For twisted wire made of multi cord.Use twisted wire made of multi cord as the second primary coil and the second primary coil, to reduce
Insertion loss.
Further, it also referring to Fig. 1 to Fig. 3, is filled as low-loss network information transfer provided by the utility model
A kind of specific embodiment set, the number of turns of the second primary coil and the equal turn numbers of second subprime coil are mentioned with reducing loss
High anti-electromagnetic interference capability.
Further, it also referring to Fig. 1 to Fig. 3, is filled as low-loss network information transfer provided by the utility model
The axial direction of a kind of specific embodiment set, the second magnetic core of the second transformer 23 is spatially parallel to wiring board, and then subtracts
Influence of small second transformer 23 to device on wiring board reduces electromagnetic interference.
Further, it also referring to Fig. 1 to Fig. 3, is filled as low-loss network information transfer provided by the utility model
A kind of specific embodiment set, the network information transfer circuit 20 on circuit board is at least two sets, to pass the network information
Transmission of electricity road 20 is integrated, and realizes integrated, miniaturization.In the present embodiment, circuit board is equipped with three sets of network information transfer electricity
Road 20.Two sets, four sets, five sets of equal number of network information transfers also can be set in some other embodiment, on circuit board
Circuit 20.
Further, it also referring to Fig. 1 to Fig. 3, is filled as low-loss network information transfer provided by the utility model
A kind of specific embodiment set, signal control chip 21 two signal ends between be connected with for letting out electromagnetic interference electric current
The anti-electromagnetic interference circuit 24 put.Anti- electromagnetic interference circuit 24 is set, the electromagnetic interference electric current in circuit loop can be carried out
It releases, to reduce electromagnetic interference, improves anti-interference ability, while influencing each other between unlike signal channel can be prevented.
Anti- electromagnetic interference circuit 24 is connected between two signal ends of each set network information transfer circuit 20, by circuit
In electromagnetic interference electric current release, to reduce electromagnetic interference, prevent influencing each other between unlike signal channel, guarantee signal
Good transmission, and by the way that at least two sets network information transfer circuits 20 are arranged on circuit boards, to form multichannel structure, reality
Existing network information transfer circuit 20 integrates, and is minimized.
Further, it also referring to Fig. 1 to Fig. 3, is filled as low-loss network information transfer provided by the utility model
A kind of specific embodiment set, signal are controlled chip 21 and can be installed in the circuit board using mounting technology and spot-welding technology,
To reduce capacitor, facilitate installation, reduces insertion loss.
Further, it also referring to Fig. 1 to Fig. 3, is filled as low-loss network information transfer provided by the utility model
A kind of specific embodiment set, anti-electromagnetic interference circuit 24 include first resistor R1, second resistance R2,3rd resistor R3 and electricity
Hold C, first resistor R1 connects with second resistance R2, and 3rd resistor R3 is in parallel with capacitor C, one end of first resistor R1 and a letter
Number end is connected, and one end of second resistance R2 is connected with another signal end, and the other end of first resistor R1 is with second resistance R2's
The other end is connected, and the other end of first resistor R1 is connected with one end of 3rd resistor R3, the other end ground connection of 3rd resistor R3.It should
Structure passes through the bracket AC earth of 3rd resistor R3 and capacitor C parallel connection, and most electromagnetic interference (EMI) electric current can be released
To big ground, the dissemination for blocking EMI is played.Further, which can also be with above-mentioned first transformer 22 and second
Transformer 23 combines, to block EMI to propagate in the loop.
Further, it also referring to Fig. 1 to Fig. 3, is filled as low-loss network information transfer provided by the utility model
A kind of specific embodiment set, the impedance of second resistance R2 is equal to the impedance of first resistor R1, to make network information transfer
Potential balance between two signal ends of circuit 20, and the electromagnetic interference in circuit is allow preferably to release.Further
The impedance on ground, second resistance R2 is 55 Ω, then the impedance of first resistor R1 is also 55 Ω, to guarantee the same of signal energy good transmission
When, preferably electromagnetic interference is released, reduces influence of the electromagnetic interference to transmission signal.
Further, it also referring to Fig. 1 to Fig. 3, is filled as low-loss network information transfer provided by the utility model
A kind of specific embodiment set, the impedance of 3rd resistor R3 are 5K Ω, and capacitor C is 270pF, which can make electromagnetic interference
Electric current is preferably released to big ground, the effect for blocking electromagnetic interference to propagate.
Further, it also referring to Fig. 1 to Fig. 3, is filled as low-loss network information transfer provided by the utility model
A kind of specific embodiment set, it includes impedance matching network module and transmission drive module, impedance that signal, which controls chip 21,
Two input terminals that two output ends with network module distinguish the first transformer 22 are connected, and two of impedance matching network module
Two output ends that input terminal sends drive module respectively are connected, and send control terminal and two signals there are two setting in drive module
End.Setting impedance matching network module and transmission drive module in signal control chip 21, more stably to transmit signal,
Reduce loss.
Further, it also referring to Fig. 1 to Fig. 3, is filled as low-loss network information transfer provided by the utility model
A kind of specific embodiment set, the first transformer 22 is arranged with the interval capacitor C, to reduce insertion loss.Similarly, the second transformation
Device 23 and the interval capacitor C are arranged, to reduce insertion loss.
Further, it also referring to Fig. 1 to Fig. 3, is filled as low-loss network information transfer provided by the utility model
A kind of specific embodiment set, the low-loss network information transfer device further include dimensional packaged circuit board and are filled in casing 11
Solidification glue improve the shock resistance of the low-loss network information transfer device to fix each electronic device.
Further, the working frequency of the low-loss network information transfer device is between 1kHz~1062MHz, to increase
Operating frequency range.The coupling that the low-loss network information transfer device is formed in high band by " conducting wire "-inductance, capacitor C
Chain realizes the transmission of energy, to realize that common-mode signal inhibits, reduces interference.
Further, which has good reliability, and each exit is Surface Mount structure,
That is two input terminals and two output ends of the second transformer 23, two output ends, two input terminals of the first transformer 22, letter
Number control two control terminals of chip 21, two signal ends, two input terminals are Surface Mount structure, and each exit and PCB
Use Sn10Pb solder when plate welds, the solid fusing point of solder at 268 degree, liquid fusing point at 301 degree, with the first transformer 22 of guarantee,
The reliability of solder joint when second transformer 23 and each other electron component cross Reflow Soldering (245 degree of maximum temperature)；Again through high temperature mould
Pressure mode makes each device be combined into one；Reliability when guaranteeing that complete machine uses.
Further, it also referring to Fig. 1 to Fig. 3, is filled as low-loss network information transfer provided by the utility model
A kind of specific embodiment set, pin 12 are 28, and the two sides of casing 11 are respectively equipped with 14 pins 12；Along 11 length of casing
Direction: the pin 12 of 11 side of casing is followed successively by 1-14 pin 12, and the pin 12 of 11 other side of casing is followed successively by 28-15, with side
Just it uses.
Further, the exit of each label and corresponding pin 12 are connected in Fig. 1, such as: marked as 1 exit with it is right
Should pin 12 marked as 1 be connected, it is connected marked as 2 exit and the corresponding pin 12 marked as 2 etc..
Further, it also referring to Fig. 1 to Fig. 3, is filled as low-loss network information transfer provided by the utility model
A kind of specific embodiment set, the length L of casing 11 are 20.2mm；The width H of casing 11 is 10mm；11 two sides of casing are corresponding
The length M of 12 free end of pin is 14mm；The bottom surface of the bottom surface protrusion casing 11 of each pin 12,12 bottom surface of pin to casing 11 is pushed up
The distance between face N is 4.95mm.It follows that the low-loss network information transfer device of the application can by volume make compared with
It is small, it realizes and minimizes, is integrated.
Each electrical parameter of the low-loss network information transfer device of the present embodiment is as follows:
1 low-loss network information transfer device electrical parameter of table
As seen from the above table, the low-loss network information transfer device loss value of the present embodiment is less than 2dB, has electromagnetism anti-dry
It disturbs, the characteristics such as low-loss transmission, and there is good reliability.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (10)
1. low-loss network information transfer device draws including casing, the circuit board being installed in the casing and by the casing
Several pins out, each pin are electrical connected with the circuit board, it is characterised in that: the circuit board is believed equipped with network
Cease transmission circuit；The network information transfer circuit includes that the first transformer, the second transformer and signal control chip, the letter
Number control chip two input terminals be connected respectively with two input terminals of first transformer, in several pins: two
A pin is connected with two output ends of first transformer respectively, and two pins are controlled with the signal respectively
Two signal ends of chip are connected, and two pins are connected with two control terminals of signal control chip respectively, and four
The pin is connect with two input terminals of second transformer and two output ends respectively, and first transformer includes the
One magnetic core, the first primary coil being wound on first magnetic core and the first secondary wire being wound on first magnetic core
Circle, first primary coil are twisted wire made of multi cord, and first secondary coil is twisted wire made of multi cord.
2. low-loss network information transfer device as described in claim 1, it is characterised in that: second transformer includes the
Two magnetic cores, the second primary coil being wound on second magnetic core and the second subprime line being wound on second magnetic core
Circle, second primary coil are twisted wire made of multi cord, and the second subprime coil is twisted wire made of multi cord.
3. low-loss network information transfer device as claimed in claim 2, it is characterised in that: the circle of second primary coil
Several equal turn numbers with the second subprime coil.
4. low-loss network information transfer device as described in claim 1, it is characterised in that: the circle of first primary coil
Several equal turn numbers with first secondary coil.
5. low-loss network information transfer device according to any one of claims 1-4, it is characterised in that: two signals
The anti-electromagnetic interference circuit for electromagnetic interference electric current to be released is connected between end.
6. low-loss network information transfer device as claimed in claim 5, it is characterised in that: the anti-electromagnetic interference circuit packet
First resistor, second resistance, 3rd resistor and capacitor are included, the first resistor is connected with the second resistance, the third electricity
Hinder it is in parallel with the capacitor, one end of the first resistor is connected with a signal end, one end of the second resistance and
Another described signal end is connected, and the other end of the first resistor is connected with the other end of the second resistance, and described first
The other end of resistance is connected with one end of the 3rd resistor, the other end ground connection of the 3rd resistor.
7. low-loss network information transfer device as claimed in claim 6, it is characterised in that: the impedance etc. of the second resistance
In the impedance of the first resistor.
8. low-loss network information transfer device as claimed in claim 6, it is characterised in that: the impedance of the 3rd resistor is
5K Ω, the capacitor are 270pF.
9. low-loss network information transfer device as claimed in claim 5, it is characterised in that: the circuit board is equipped at least
Two sets of network information transfer circuits.
10. low-loss network information transfer device according to any one of claims 1-4, it is characterised in that: the signal control
Coremaking piece includes impedance matching network module and sends drive module, and two output ends of the impedance matching network module are distinguished
Two input terminals of first transformer are connected, and two input terminals of the impedance matching network module are distinguished the transmission and driven
Two output ends of dynamic model block are connected, set in the transmissions drive module there are two the control terminal and two signal ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821151503.9U CN208548905U (en) | 2018-07-19 | 2018-07-19 | Low-loss network information transfer device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821151503.9U CN208548905U (en) | 2018-07-19 | 2018-07-19 | Low-loss network information transfer device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208548905U true CN208548905U (en) | 2019-02-26 |
Family
ID=65425053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821151503.9U Withdrawn - After Issue CN208548905U (en) | 2018-07-19 | 2018-07-19 | Low-loss network information transfer device |
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| Country | Link |
|---|---|
| CN (1) | CN208548905U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108880610A (en) * | 2018-07-19 | 2018-11-23 | 深圳振华富电子有限公司 | Low-loss network information transfer device |
-
2018
- 2018-07-19 CN CN201821151503.9U patent/CN208548905U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108880610A (en) * | 2018-07-19 | 2018-11-23 | 深圳振华富电子有限公司 | Low-loss network information transfer device |
| CN108880610B (en) * | 2018-07-19 | 2023-11-10 | 深圳振华富电子有限公司 | Low-loss network information transmission device |
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