CN202135243U - Multipath power distribution box of cable television signal - Google Patents
Multipath power distribution box of cable television signal Download PDFInfo
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- CN202135243U CN202135243U CN201120141578U CN201120141578U CN202135243U CN 202135243 U CN202135243 U CN 202135243U CN 201120141578 U CN201120141578 U CN 201120141578U CN 201120141578 U CN201120141578 U CN 201120141578U CN 202135243 U CN202135243 U CN 202135243U
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Abstract
The utility model brings forward a multipath power distribution box of cable television signals. The box body includes at least a power divider, an input signal guide joint, a plurality of output terminals, and at least a power distribution circuit board wherein power is distributed from one path to multipath. The power distribution circuit board wherein power is distributed from one path to multipath possesses a radio frequency connector as the input terminal and a multipath radio frequency connector as the output terminal. The power distribution circuit board wherein power is distributed from one path to multipath is arranged on the internal panel of the box body; the radio frequency connector is connected to the output terminal of the power divider; and the multipath radio frequency connector is extended out of the box body through the box body. In the utility model, through the multipath power distribution box, cable connection in the signal cascade process can be minimized, the interior of the box body is neat, and maintenance is convenient, in addition, the multipath power distribution box is good for the reliable signal transmitting, and power consumption is minimized.
Description
Technical field
The utility model relates to the cable television communication technical field, particularly the power divider of cable TV signal.
Background technology
Power divider is called for short power splitter, is functional unit commonly used in the communication system, in cable television system, need be one tunnel signal allocation to a plurality of domestic consumers, and power divider has a wide range of applications.People lived and disperseed relatively in the past, and the distribution network that cable television system is used just has the multistage method of salary distribution, mainly contains the product of two power splitters, four power splitters, six power splitters, several kinds of specifications of eight power splitters.Multichannel is distributed if desired, need the power splitter of different size be cascaded up with cable.Now people live concentratedly especially, and a residential building often has 30 multilayers, every layer have many families other.Power splitter is installed concentratedly in a building equipment box, if re-use cable cascade, the distribution of few port power splitter realization multiple signals, will take the equipment box space greatly, and a lot of potential faults are also arranged simultaneously.This application mode is except the power dissipation that the cable own loss is arranged brings, because the link loose contact also brings multiple communication quality problem, the maintenance cost of cable TV network is very high.
Summary of the invention
Problem to existing power divider; The utility model provides a kind of multichannel power division box of cable TV signal, utilize box body to comprise that at least one power divider, input signal connect head and a plurality of lead-out terminal, at least one block of one fen multichannel power distributing circuit plate.This fen multichannel power distributing circuit plate have a rf adapter as input, multi-channel rf connector as output; Multichannel power distributing circuit plate was installed on the box body inner panel in one minute; Rf adapter is connected to the lead-out terminal of said power divider, and said multi-channel rf connector passes box body and reaches the box body outside.Utilize one fen multichannel power distributing circuit of polylith plate to be connected on a plurality of lead-out terminals of power divider, then can the signal of lead-out terminal output be divided into the multiply signal once more, thereby realize a signal is divided into the demand of some signals.Multichannel power division box through the utility model disclosed can reduce the connection of cable in the signal cascade process, and box body is inner clean and tidy, is convenient to safeguard; Also help the reliable conduction of signal, reduce the consumption of power.
Description of drawings
Fig. 1 is the stereoscopic sketch map of the power division box that discloses of the utility model.
Fig. 2 is the schematic perspective view after the power division box panel is opened.
Fig. 3 is one fen octuple power distributing circuit schematic diagram.
Embodiment
As shown in Figure 1, be the stereoscopic sketch map of the power division box 10 that discloses of the utility model.In this execution mode; Power division box 10 is six cuboids; Have six panels, wherein base plate is fixed on the fixed mount of user's floor through fastening pin 20, and one of them side panel is that cable TV signal inserts face; The coaxial cable 30 that carries cable TV signal is connected to the inner power divider of box body through an opening on this side panel, and other panel can be equipped with one fen multichannel power distributing circuit plate.The quantity and the model of one fen multichannel power distributing circuit plate are decided according to number of users.
As shown in Figure 2, be the schematic perspective view after power division box panel that the utility model discloses is opened.In this execution mode, one fen multichannel power division box is accomplished the function of one minute 32 power divider, adopts one minute eight power distributing circuit plate 12 of one fen power divider 11 of four and four blocks.Power divider 11 was installed on the base plate of box body through fasteners such as trip bolts in one minute No. four, and one minute No. four power divider 11 comprises that an input signal connects 111 and four output interfaces 112,113,114,115.Wherein, input signal connects 111 and stretches out external carrying cable TV signal coaxial cable 30 through the perforate on the rear board.Four output interfaces 112,113,114,115 are connected respectively to the rf adapter 121 of match four blocks one fen power distributing circuit plates 12 of eight.Four blocks of one fen power distributing circuit plates 12 of eight are installed in respectively on front panel, left panel, right panel and the top panel, and a side that has rf adapter 121 is in box body, and a side that has eight radio frequency connectors 122 is outside box body.All offer eight perforates on front panel, left panel, right panel, the top panel, so that the radio frequency connector 122 of one fen octuple power distributing circuit plate stretches out from perforate.
As shown in Figure 3, one fen octuple power distributing circuit schematic diagram.Output terminals A, B, C, D, E, F, G, H i.e. eight radio frequency connectors 122; In cable television system, the matched impedance of radio frequency connector is generally 75 ohm, and input I is connected to rf adapter 121; The matched impedance of rf adapter generally also is 75 ohm, contact J ground connection.T1, T3, T5 are autotransformer; T2, T4, T6 are distribution transformer, and the signal that goes out to earth terminal J self coupling from the output K of T1 passes to the input L of T2, L are arranged on the center of T2; Be the top and the bottom equal turn numbers of T2, signal will distribute along two-way up and down uniformly like this.In like manner, the input of T4, T6 also is arranged on their centers separately.Like this signal at each grade all by the distribution of equalization.And the number of turns separately of T1, T3, T5 autotransformer is than the evolution that is 2, and promptly the whole number of turns of transformer and the number of turns of self coupling part are than the evolution that is 2.This is than trying to achieve through following method, establishes this than being k, is example with output terminals A, the B of Fig. 3; According to aforementioned, the top and the bottom equal turn numbers of T6, so i1 ' and i1 " equal and opposite in direction; in the opposite direction, so i1 ' and i1 " magnetic flux and the induced electromotive force that on T6, produce cancel out each other, so A, N, 3 equipotentials of B; Promptly two 75 ohm are directly received on the N point, parallelly connected 37.5 ohm, and input to be the impedance of T5 be 75 ohm (why the impedance design of T5 is 75 ohm? Because when the user needs; The circuit that comprises T5 and back can remove and become one minute four circuit, and the signal that promptly branches away from T4 directly connects the radio frequency delivery outlet, and radio frequency delivery outlet matched impedance is 75 ohm); According to the number of turns of transformer than k square equal impedance ratio, so k*k=75/37.5=2, so the evolution of k=2.In like manner the number of turns separately of all the other T1, T3, T5 autotransformer is than the evolution that all is 2.In addition, because the magnetic core inductance can reduce in the inductance value of HFS, add the influence of distributed capacitance; Cause two distributor circuits to increase in the high band distribution loss; Isolate index each other and descend, therefore between autotransformer and distribution transformer, meet a variable capacitance C1 over the ground, the secondary coil of C1 and T1 (being the self coupling part) constitutes antiresonant circuit like this; Just in time in high band resonances, with the deficiency of compensation high band.In like manner, C2, C3, C4, C5 play a part identical.
The multichannel power division box that the utility model disclosed is not limited only to the one minute 32 this model that the utility model discloses, as long as the quantity of box body panel satisfies with size required one minute multichannel power distributing circuit plate is installed.For example; In practical application; Need one fen power division box of 60 four tunnel, can adopt following dual mode to realize: wherein a kind ofly make box body into ten faces (positive eight prisms), one fen octuple power divider is installed on one of them face; One of them face inserts face as coaxial cable; On remaining eight faces one fen octuple power distributing circuit plate is installed, eight lead-out terminals of power divider are connected respectively to the rf inputs of one fen octuple power distributing circuit plate on eight different facial, then can obtain one minute 64 function of cable TV signal.Second kind of implementation is still like practical novel six box bodys that disclose; One fen octuple power divider just is installed on the bottom surface; Two blocks of one fen octuple power distributing circuit plates all are installed on all the other four faces; The lead-out terminal of one fen octuple power divider is connected respectively to the rf inputs of one fen octuple power distributing circuit plate, also can realizes one minute 64 function.
Claims (10)
1. the multichannel power division box of a cable TV signal comprises that at least one power divider, input signal connect head and a plurality of lead-out terminal; It is characterized in that multichannel power division box also comprises box body, at least one block of one fen multichannel power distributing circuit plate; Said one minute multichannel power distributing circuit plate have a rf adapter as input, multi-channel rf connector as output; Multichannel power distributing circuit plate was installed on the box body inner panel in said one minute, and said rf adapter is connected to the lead-out terminal of said power divider, and said multi-channel rf connector passes box body and reaches the box body outside.
2. the multichannel power division box of cable TV signal as claimed in claim 1 is characterized in that said power divider according to the number of users setting, comprising: a kind of in one minute No. four power divider, the one fen octuple power divider.
3. the multichannel power division box of cable TV signal as claimed in claim 1; It is characterized in that said one minute multichannel power distributing circuit buttress according to the number of users setting, comprising: a kind of in one-to-two power distributing circuit plate, one fen four road power distributing circuit plate, the one fen octuple power distributing circuit plate.
4. the multichannel power division box of cable TV signal as claimed in claim 1 is characterized in that the quantity setting of lead-out terminal of the said power divider of the several certificates of piece of said one minute multichannel power distributing circuit plate, is equal to or less than the quantity of lead-out terminal.
5. the multichannel power division box of cable TV signal as claimed in claim 1 is characterized in that said box body can be hexahedron or other polyhedrons, and the quantity of said box body panel satisfies with size installs required one minute multichannel power distributing circuit plate.
6. like the multichannel power division box of any described cable TV signal in the claim 2,3,4,5; It is characterized in that adopting securing member that said power divider is installed in the box body bottom, a plurality of lead-out terminals of said multipath power distributor stretch out to other panel directions of non-box bottom plate.
7. like the multichannel power division box of any described cable TV signal in the claim 2,3,4,5; What it is characterized in that said box body wherein offers input hole on a panel, and the input signal of said power divider connects a coaxial cable that passes said input hole and input cable TV signal and is connected.
8. like the multichannel power division box of any described cable TV signal in the claim 2,3,4,5; It is characterized in that said box body is equipped with on the panel of multichannel power distributing circuit plate offers the radio frequency connector hole, and the said radio frequency connector hole of passing in the radio frequency connector hole of said multichannel power distributing circuit plate reaches the box body outside.
9. the multichannel power division box of cable TV signal as claimed in claim 8 is characterized in that said box body comprises: 6 bodies or be polyhedron.
10. the multichannel power division box of cable TV signal as claimed in claim 8 is characterized in that on each face of said box body one or more multichannel power distributing circuit plate being installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120141578U CN202135243U (en) | 2011-05-06 | 2011-05-06 | Multipath power distribution box of cable television signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120141578U CN202135243U (en) | 2011-05-06 | 2011-05-06 | Multipath power distribution box of cable television signal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202135243U true CN202135243U (en) | 2012-02-01 |
Family
ID=45523999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120141578U Expired - Lifetime CN202135243U (en) | 2011-05-06 | 2011-05-06 | Multipath power distribution box of cable television signal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202135243U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107863656A (en) * | 2017-10-17 | 2018-03-30 | 江苏永沃铜业有限公司 | A kind of New-type radio-frequency connector |
-
2011
- 2011-05-06 CN CN201120141578U patent/CN202135243U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107863656A (en) * | 2017-10-17 | 2018-03-30 | 江苏永沃铜业有限公司 | A kind of New-type radio-frequency connector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120201 |