CN208589971U

CN208589971U - Pulsed filter

Info

Publication number: CN208589971U
Application number: CN201821586856.1U
Authority: CN
Inventors: 范云光
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-09-28
Filing date: 2018-09-28
Publication date: 2019-03-08
Anticipated expiration: 2028-09-28

Abstract

The utility model discloses a kind of pulsed filter; including 4 first magnet rings, four first annular coils, 4 second magnet rings, 4 second loop coils, 4 second centre tap connecting lines, four third magnet rings, four third loop coils, four third centre tap connecting lines; and it accommodates said elements and the glue and shell of isolation protection is provided; to connect RJ45 connector to network integrated circuit, and provide pulse bandwidth filtering effect.Especially, using first annular coil, the second loop coil and the third loop coil of the first, second, third magnetic collocation institute's winding respectively as transformer, input impedance, output impedance, and it is specifically designed to input impedance and output impedance is impedance matching, transmission loss and wave distortion between Network path connector and network integrated circuit can thus be greatly reduced, effectively improve transmission range.

Description

Pulsed filter

Technical field

The utility model is taken about a kind of pulsed filter especially with the first magnet ring, the second magnet ring, third magnet ring First annular coil, the second loop coil and third loop coil with institute's winding and respectively as transformer, input impedance, Output impedance, and be specifically designed to input impedance and output impedance is impedance matching, thus can be greatly reduced Network path connector and Transmission loss and wave distortion between the integrated circuit of network, effectively improve transmission range, are highly suitable for transmitting with 10Gbps 10G-BASE-T Yi Tai Netcom's communication network of speed running or the RJ45 connector of 10G BASE-T network interface.

Background technique

Ethernet is a kind of using very universal network, and it is well known that PoE power supply is that one kind can be in second The technology on electric power and data to device, and the 8P8C connector of commonly referred to as RJ45 are transmitted through twisted pair too in network It is common twisted pair connecting plug in Ethernet, wherein the 8P of 8P8C (8position 8contact) refers to 8 positions (Position, i.e. 8 grooves), and 8C refers to 8 contacts (Contact, i.e. 8 metallic contacts).

By taking 100Base-T4 as an example, RJ45 connector includes four groups of differential waves pair, respectively TD1+ pin (transmission number According to+), TD1- pin (transmission data -), TD2+ pin, TD2- pin, TD3+ pin, TD3- pin, TD4+ pin, TD4- draw Foot.

Furthermore four lines are used only in 100,000,000 second too net (Fast Ethernet, 10/100M Ethernet), and using poor Signal transmission mode is moved to reduce electromagnetic interference, wherein two TX lines are to be threaded together, and it is also to be screwed in one that two RX, which receive line, It rises.Therefore, it is all EIA-568-A or EIA-568-B that parallel lines, which are exactly both ends, and wire jumper is exactly that one end uses EIA-568- A, the other end use the bus connection method of EIA-568-B.

In addition, gigabit Ethernet (Gigabit Ethernet, 1000M Ethernet) or second net very much power supply (PoE, Power over Ethernet) in, four pairs of whole differential pairs all can use arrive.

For example, as shown in Figures 1 and 2, RJ45 connector SK in the prior art generally will use to be accommodated in and have Two magnet rings in the shell 10 of multiple pins 11 are as network filter, the respectively first main magnet ring 20, the second magnet ring 30, by To be connected to network Integrated circuit IC, and then provide isolated differential signal transfer function.Further, the first magnet ring 20 is main As transformer, and differential signal ratio is 1:1, to carry out differential signal transmission, and has impedance matching, waveform reparation, letter Number clutter recognition and voltage isolation etc. function, can increase transmission range, meanwhile, it can also make connected network Integrated circuit IC Holding is isolated from the outside, and further enhances jamproof ability.In addition, the effect of the second magnet ring 30 is as input impedance Rin, the and it is readily apparent that prior art only has input impedance Rin, but and output impedance is not configured, therefore, entirely transmit boundary Input impedance and output impedance on face are to mismatch, and cause transmission electric current I to become larger, increase transimission power, seriously affect reality On transmission range, substantially limit application field.

In addition, although input impedance Rin provided by the second magnet ring 30 can effectively filter the common mode of RJ45 connector SK Noise, but the high frequency noise caused by the Integrated circuit IC of network can filter common mode noise due to lacking high impedance, cause Wave distortion and the transmission quality for seriously affecting signal.

The implementation means of the general prior art can refer to Fig. 3, be widely-known technique, because without making further specifically It is bright.

Include three loop coils hence it is highly desirable to a kind of pulsed filter of innovation, respectively as input impedance, Transformer, output impedance, are all built into insulation crust, and are specifically designed to input impedance and output impedance is to be mutually matched, It allows the transmission loss of whole route to be reduced to very low, and effectively improves transmission range, use the institute for solving the above-mentioned prior art It is problematic.

Utility model content

The main purpose of the utility model is to provide a kind of pulsed filter, including it is 4 first magnet rings, four first annular Coil, 4 second magnet rings, 4 second loop coils, 4 second centre tap connecting lines, four third magnet rings, four third toroids Circle, four third centre tap connecting lines, and accommodate said elements and the glue and shell of isolation protection are provided, RJ45 can be connected It meets device SK and is connected to network Integrated circuit IC, and there is pulse bandwidth filtering effect.

Specifically, each first annular coil is to be set around corresponding first magnet ring and constitute transformer, and it is each Second loop coil is to be set around corresponding second magnet ring and constitute input impedance, and each third loop coil is to be set around Corresponding third magnet ring and constitute output impedance.

Shell has multiple pins, is to be connected to second loop coil and the third loop coil.Furthermore often A second centre tap connecting line is to be connected to corresponding pin by the centre tap of the side of first annular coil, and each Third centre tap connecting line is to be connected to corresponding pin by the centre tap of another side of first annular coil.

Especially, corresponding second loop coil, first annular coil and third loop coil be sequentially connect, and Network path connector is connected to network integrated circuit via the pin.

Generally speaking, the utility model be using the collocation institute's winding of the first, second, third magnetic first annular coil, the Second ring coil and third loop coil and respectively as transformer, input impedance, output impedance, and be specifically designed to input Impedance and output impedance are impedance matchings, thus the transmission loss that can be greatly reduced between Network path connector and network integrated circuit And wave distortion, effectively improve transmission range.

Detailed description of the invention

Fig. 1 shows the schematic diagram of network filter in the prior art.

Fig. 2 shows the simple equivalent circuit schematic diagram of network filter in the prior art.

Fig. 3 shows the detailed equivalent circuit of network filter in the prior art.

Schematic diagram of Fig. 4 display according to the utility model first embodiment pulsed filter.

Circuit diagram of Fig. 5 display according to the utility model first embodiment pulsed filter.

Simple equivalent circuit schematic diagram of Fig. 6 display according to the utility model first embodiment pulsed filter.

Detailed equivalent circuit of Fig. 7 display according to the utility model first embodiment pulsed filter.

Schematic diagram of Fig. 8 display according to the utility model second embodiment pulsed filter.

Circuit diagram of Fig. 9 display according to the utility model second embodiment pulsed filter.

Specific embodiment

Cooperation diagram and appended drawing reference do more detailed description to the embodiments of the present invention below, make to be familiar with ability The technical staff in domain can implement accordingly after studying this specification carefully.

Please refer to Fig. 4 and Fig. 5, the respectively schematic diagram of the utility model first embodiment pulsed filter and circuit signal Figure.As shown in Figures 4 and 5, the pulsed filter of the utility model first embodiment includes shell 10,4 first magnet rings 20, four First annular coil 22,4 second magnet rings 30,4 second loop coils 32,4 second centre tap connecting lines 34, four third magnetic Ring 40, four third loop coils 42 and four third centre tap connecting lines 44, RJ45 connector SK is connected to network Integrated circuit IC and have the function of pulse bandwidth filtering, wherein the first all magnet rings 20, first annular coil 22, the second magnet ring 30, Second loop coil 32, the second centre tap connecting line 34, third magnet ring 40, third loop coil 42 and third centre tap Connecting line 44 is all to be placed in shell 10 together.

Preferably, the first magnet ring 20, the second magnet ring 30, third magnet ring 40 are core magnetism performance rings, and first annular coil 22, Second loop coil 32, the second centre tap connecting line 34, third loop coil 42 and third centre tap connecting line 44 are The twisted enameled wire of two-phase.

Each first annular coil 22 is to be set around corresponding first magnet ring 20, and each second loop coil 32 is winding In corresponding second magnet ring 30, and each third loop coil 42 is to be set around corresponding third magnet ring 40, thus constitute Four group pulse filter units.In addition, shell 10 has multiple pins 11, it is to connect among first annular coil 32, second Tap connecting line 34, third loop coil 42 and third centre tap connecting line 44.

Generally speaking, the pulsed filter of the utility model first embodiment is disposed on RJ45 connector SK and net Between the Integrated circuit IC of road, and RJ45 connector SK and network Integrated circuit IC are connected via the pin 11, offer is provided Pulse bandwidth filtering function, can reduce the transmission loss of whole route, and effectively improve transmission range.

Specifically, each first annular coil 22 be set around corresponding first magnet ring 20 and constitute transformer, and Each second loop coil 32 is to be set around corresponding second magnet ring 30 to constitute input impedance, and each third loop coil 42 be to be set around corresponding third magnet ring 40 and constitute output impedance, therefore the utility model can pass through the pin 11, will Electric signal from RJ45 connector SK is sequentially via input impedance, transformer, output impedance and transmitted in both directions to network Integrated circuit IC.

Further, the RJ45 connector SK mentioned in the utility model be in addition to comprising four groups of variance signals to pin (that is, TD1+ pin, TD1- pin, TD2+ pin, TD2- pin, TD3+ pin, TD3- pin, TD4+ pin, TD4- draw Foot) other than, TCT1 pin, TCT2 pin, TCT3 pin, TCT4 pin are further comprised, every group of difference letter is respectively arranged at Number to pin, as shown in the left side of Fig. 4.In addition, the right side of Fig. 4 indicate be network Integrated circuit IC MCT1 pin, MX1- Pin, MX1- pin, MCT2 pin, MX2- pin, MX2- pin, MCT3 pin, MX3- pin, MX3- pin, MCT4 draw Foot, MX4- pin, MX4- pin correspond respectively to the TCT1 pin, TD1+ pin, TD1- pin, TCT2 of RJ45 connector SK Pin, TD2+ pin, TD2- pin, TCT3 pin, TD3+ pin, TD3- pin, TCT4 pin, TD4+ pin, TD4- draw Foot.

More specifically, the second loop coil 32 is to be further connected to RJ45 connector SK and first annular coil Between 22, and third loop coil 42 is further connected between first annular coil 22 and network Integrated circuit IC.Again Person, the second loop coil 32 is the side (left side in figure) for connecting first annular coil 22, and third loop coil 42 is Connect the other side (right edge in figure) of first annular coil 22, in particular, TCT1 pin, TCT2 pin, TCT3 pin, TCT4 pin is the centre tap for being connected to the left side of first annular coil 22, that is, the second centre tap connecting line 34, and The second magnet ring 30 is passed around, and MCT1 pin, MCT2 pin, MCT3 pin, MCT4 pin are connected to first annular coil 22 The centre tap of right edge, that is, third centre tap connecting line 44, and pass around third magnet ring 40.

Substantially, the second loop coil 32 and third loop coil 42 are respectively as input impedance on circuit characteristic Rin and input impedance Rout, as shown in the simple equivalent circuit of Fig. 6.Due to the second loop coil 32 and third loop coil 42 It is to be specifically designed to input impedance Rin and input impedance Rout to be mutually matched, for example therefore 50 Ω flow through the utility model The conduction electric current I of pulsed filter can be greatly reduced and level off to zero current, achieve the purpose that reduce power consumption, and then increase effective Can transmission range.

Since the second centre tap connecting line 34 is from TCT1 pin, TCT2 pin, TCT3 pin, TCT4 pin It is connected to the centre tap of the left side of first annular coil 22 and passes around the second magnet ring 30, and the third centre tap connects Wiring 44 is that the right edge of first annular coil 22 is connected to from MCT1 pin, MCT2 pin, MCT3 pin, MCT4 pin Centre tap and third magnet ring 40 is passed around, so the second magnet ring 30 and third magnet ring 40 have the function of choke coil, it can be effective Filter high-frequency noise, further improves signal transmitting quality.

The characteristics of to further appreciate that the utility model, can refer to Fig. 7, the utility model first embodiment pulsed filter Detailed equivalent circuit, and be compared to each other with Fig. 3, and it is readily apparent that the utility model system have input group anti-simultaneously and Output impedance, but the prior art but only has input impedance.

Further with reference to Fig. 7 and Fig. 8, the schematic diagram and circuit of the utility model second embodiment pulsed filter show It is intended to.It should be noted that the pulsed filter of the utility model second embodiment is analogous to the utility model first embodiment, And element having the same, include shell 10 and four groups of the first magnet ring 20, first annular coil 22, the second magnet ring 30, Second ring coil 32, third magnet ring 40 and third loop coil 43, and technological disparity therebetween is in second embodiment TCT1 pin, TCT2 pin, TCT3 pin, TCT4 pin are connected to by the centre tap of the left side of first annular coil 22 The second centre tap connecting line 34 be designed to bypass and do not pass around the second magnet ring 30, likewise, by first annular line The centre tap of the right edge of circle 22 is connected in the third of MCT1 pin, MCT2 pin, MCT3 pin, MCT4 pin Between tap connecting line 44 be designed to bypass and do not pass around third magnet ring 40.Therefore, the pulsed filter of second embodiment is not right It transmits signal and the effect of choke coil is provided.

In conclusion the characteristics of the utility model be using three loop coils respectively as input impedance, transformer, Output impedance, and be built into insulation crust to completely cut off protection, not only input impedance can be filtered effectively from RJ45 connector Common mode noise also comes from high frequency noise caused by the IC of network using output impedance filtering, prevents wave distortion, and input resistance Anti- and output impedance is to be specifically designed to impedance matching, thus the transmission loss of whole route is reduced to very low, can effectively reach At signal transmission, waveform reparation, signal noise inhibition and voltage isolation etc. function, and then increase transmission range, while making crystalline substance Piece is isolated from the outside, and enhances anti-interference ability.

The foregoing is merely the preferred embodiment to explain the utility model, it is not intended to accordingly do the utility model Limitation in any form, it is therefore, all to have any modification or the change made under identical creation spirit in relation to the utility model It more, all should include being intended to the scope of protection in the utility model.

Wherein, the reference numerals are as follows:

10 shells

11 pins

20 first magnet rings

22 first annular coils

30 second magnet rings

32 second loop coils

34 second centre tap connecting lines

40 third magnet rings

42 third loop coils

44 third centre tap connecting lines

I conducts electric current

The network IC integrated circuit

Rin input impedance

Rout output impedance

SK Network path connector.

Claims

1. a kind of pulsed filter, which is characterized in that provide one to connect a Network path connector to a network integrated circuit Pulse bandwidth filtering effect, comprising:

4 first magnet rings；

Four first annular coils, and each first annular coil is to be set around corresponding first magnet ring and constitute a transformation Device；

4 second magnet rings；

4 second loop coils, and each second loop coil is to be set around corresponding second magnet ring and constitute an input Impedance；

Four third magnet rings；

Four third loop coils, and each third loop coil is to be set around the corresponding third magnet ring and constitute an output Impedance；

4 second centre tap connecting lines；

Four third centre tap connecting lines；And

One shell, to accommodate first magnet ring, the first annular coil, second magnet ring, second toroid Circle, the third magnet ring and the third loop coil, and there are multiple pins, be connected to second loop coil and The third loop coil,

Wherein each second centre tap connecting line is connected by a centre tap of a side of the first annular coil To the corresponding pin, each third centre tap connecting line is by among the one of an another side of the first annular coil Tap is connected to the corresponding pin, corresponding second loop coil, the first annular coil and third annular Coil array sequentially connects, and the Network path connector is connected to the network integrated circuit via the pin.

2. pulsed filter according to claim 1, which is characterized in that the Network path connector is a RJ45 connector, and Include a TCT1 pin, a TD1+ pin, a TD1- pin, a TCT2 pin, a TD2+ pin, a TD2- pin, a TCT3 Pin, a TD3+ pin, a TD3- pin, a TCT4 pin, a TD4+ pin and a TD4- pin, and the integrated electricity in the network Road includes a MCT1 pin, a MX1- pin, a MX1- pin, a MCT2 pin, a MX2- pin, a MX2- pin, one MCT3 pin, a MX3- pin, a MX3- pin, a MCT4 pin, a MX4- pin and a MX4- pin, are to respectively correspond In the TCT1 pin of the Network path connector, the TD1+ pin, the TD1- pin, the TCT2 pin, the TD2+ pin, the TD2- Pin, the TCT3 pin, the TD3+ pin, the TD3- pin, the TCT4 pin, the TD4+ pin and the TD4- pin.

3. pulsed filter according to claim 2, which is characterized in that the second centre tap connecting line is connect via this Foot and be connected to the TCT1 pin, the TCT2 pin, the TCT3 pin and the TCT4 pin of the Network path connector wherein One of, and the third centre tap connecting line is to be connected to the MCT1 pin of the network integrated circuit via the pin, be somebody's turn to do One of MCT2 pin, the MCT3 pin and the MCT4 pin.

4. pulsed filter according to claim 1, which is characterized in that the second centre tap connecting line be by this first Loop coil passes around the second magnet ring and is connected to the corresponding pin, and the third centre tap connecting line is by third annular Coil passes around third magnet ring and is connected to the corresponding pin.

5. pulsed filter according to claim 1, which is characterized in that the second centre tap connecting line does not pass around second Magnet ring, but the corresponding pin is directly connected to by the first annular coil, and the third centre tap connecting line does not pass around Third magnet ring, but the corresponding pin is directly connected to by the third loop coil.

6. pulsed filter according to claim 1, which is characterized in that first magnet ring, second magnet ring, the third magnetic Ring is core magnetism performance ring.

7. pulsed filter according to claim 1, which is characterized in that the first annular coil, second loop coil, The second centre tap connecting line, the third loop coil, the third centre tap connecting line are the twisted enameled wires of two-phase.