CN203233497U - Dual-branch terminal branching device circuit - Google Patents
Dual-branch terminal branching device circuit Download PDFInfo
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- CN203233497U CN203233497U CN 201320298375 CN201320298375U CN203233497U CN 203233497 U CN203233497 U CN 203233497U CN 201320298375 CN201320298375 CN 201320298375 CN 201320298375 U CN201320298375 U CN 201320298375U CN 203233497 U CN203233497 U CN 203233497U
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- inductance
- electric capacity
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Abstract
Disclosed in the utility model is a dual-branch terminal branching device circuit that comprises a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a sixth capacitor, a seventh capacitor, an eighth capacitor, a first inductor, a second inductor, a third inductor, a fourth inductor, a first resistor, a second resistor, a third resistor, and a transformer. According to the utility model, the provided circuit has the following characteristics: a defect of a poor filtering capability of the existing multi-branching terminal branching device in the prior art is overcome; and an anti-interference capability of the whole circuit is improved.
Description
Technical field
The utility model includes the cable TV system equipment technical field, particularly a kind of pair of branch end splitter circuit.
Background technology
The multiple-limb end splitter circuit output end of prior art often directly is connected transformer inductance with input, therefore, this splitter filter effect is poor, and its branch end also lacks filter effect, therefore be subjected to the interference of environmental change easily, practical effect is undesirable.
The utility model content
(1) technical problem that will solve
The purpose of this utility model will overcome above-mentioned shortcoming exactly, aims to provide a kind of two branch end splitter circuit.
(2) technical scheme
For achieving the above object, of the present utility model pair of branch end splitter circuit, by first electric capacity, second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the 6th electric capacity, the 7th electric capacity, the 8th electric capacity, first inductance, second inductance, the 3rd inductance, the 4th inductance, first resistance, second resistance, the 3rd resistance and transformer are formed, described transformer comprises the 5th inductance, the 6th inductance, the 7th inductance and the 8th inductance, described first electric capacity, one end is as input, the other end connects described the 5th inductance one end, described second electric capacity, one end is as output, the other end connects the other end of described the 5th inductance, described the 6th inductance one end is connected back ground connection with described the 7th inductance one end, the other end of described the 6th inductance connects an end of described the 8th inductance, described the 7th inductance other end connects described the 5th inductance other end, described first resistance of connecting between described the 8th inductance one end and the ground wire, described the 3rd electric capacity is in parallel with described first resistance, described the 8th inductance other end connects described the 4th electric capacity one end, described the 4th electric capacity other end ground connection, described the 4th electric capacity one end connects described second resistance, one end, described the 5th electric capacity of connecting between the described second resistance other end and the ground wire, described first inductance, one end connects the other end of described second resistance, the described first inductance other end ground connection, be connected in the middle of described first inductance with in the middle of described second inductance, and its connection is in described the 6th electric capacity of series connection between the ground wire, described second inductance, one end connects described the 3rd inductance one end, the described second inductance other end connects described the 4th inductance one end, described the 3rd resistance of series connection between described the 3rd inductance other end and described the 4th inductance other end, described the 7th electric capacity one end is as first branch end, the other end connects described second inductance, one end, described the 8th electric capacity one is as second branch end, and the other end connects the other end of described second inductance.
Further, described the 7th electric capacity is identical with the capacitance of described the 8th electric capacity.
Further, described first electric capacity is identical with the capacitance of described second electric capacity.
(3) beneficial effect
Compared with prior art, the technical solution of the utility model has the following advantages: increased filter function, improved antijamming capability, it is more complete that TV signal is propagated.
Description of drawings
Fig. 1 is the circuit theory schematic diagram of the two branch end splitter circuit of the utility model.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples are used for explanation the utility model, but are not used for limiting scope of the present utility model.
As shown in Figure 1, of the present utility model pair of branch end splitter circuit, by first capacitor C 1, second capacitor C 2, the 3rd capacitor C 3, the 4th capacitor C 4, the 5th capacitor C 5, the 6th capacitor C 6, the 7th capacitor C 7, the 8th capacitor C 8, first inductance L 1, second inductance L 2, the 3rd inductance L 3, the 4th inductance L 4, first resistance R 1, second resistance R 2, the 3rd resistance R 3 and transformer T form, described transformer T comprises the 5th inductance L 5, the 6th inductance L 6, the 7th inductance L 7 and the 8th inductance L 8, described first capacitor C, 1 one ends are as input, the other end connects described the 5th inductance L 5 one ends, described second capacitor C, 2 one ends are as output, the other end connects the other end of described the 5th inductance L 5, described the 6th inductance L 6 one ends are connected back ground connection with described the 7th inductance L 7 one ends, the other end of described the 6th inductance L 6 connects an end of described the 8th inductance L 8, described the 7th inductance L 7 other ends connect described the 5th inductance L 5 other ends, described first resistance R 1 of connecting between described the 8th inductance L 8 one ends and the ground wire, described the 3rd capacitor C 3 is in parallel with described first resistance R 1, described the 8th inductance L 8 other ends connect described the 4th capacitor C 4 one ends, described the 4th capacitor C 4 other end ground connection, described the 4th capacitor C 4 one ends connect described second resistance R, 2 one ends, described the 5th capacitor C 5 of connecting between described second resistance R, 2 other ends and the ground wire, described first inductance L, 1 one ends connect the other end of described second resistance R 2, described first inductance L, 1 other end ground connection, be connected in the middle of described first inductance L 1 with in the middle of described second inductance L 2, and its connection is in described the 6th capacitor C 6 of series connection between the ground wire, described second inductance L, 2 one ends connect described the 3rd inductance L 3 one ends, described second inductance L, 2 other ends connect described the 4th inductance L 4 one ends, described the 3rd resistance R 3 of series connection between described the 3rd inductance L 3 other ends and described the 4th inductance L 4 other ends, described the 7th capacitor C 7 one ends are as first branch end, the other end connects described second inductance L, 2 one ends, described the 8th capacitor C 8 one is as second branch end, and the other end connects the other end of described second inductance L 2.
Described the 7th capacitor C 7 is identical with the capacitance of described the 8th capacitor C 8, described first capacitor C 1 is identical with the capacitance of described second capacitor C 2, choosing of capacitance guaranteed that input has identical filter capacity with output like this, same, first branch end also has identical filter capacity with second branch end, guarantees the consistency that signal is propagated.
Of the present utility model pair of branch end splitter circuit overcome the defective of the multiple-limb end splitter filter capacity difference of prior art, the electric capacity of identical capacitance values is set at output, input, same, the electric capacity of identical capacitance values also is set in first branch end, second branch end, improve filter capacity, guaranteed the consistency of signal transmission simultaneously.
In sum, above-mentioned execution mode is not to be restricted execution mode of the present utility model, and the modification that all those skilled in the art carry out on the basis of flesh and blood of the present utility model or equivalent deformation are all at technology category of the present utility model.
Claims (3)
1. two branch end splitter circuit, it is characterized in that: by first electric capacity, second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the 6th electric capacity, the 7th electric capacity, the 8th electric capacity, first inductance, second inductance, the 3rd inductance, the 4th inductance, first resistance, second resistance, the 3rd resistance and transformer are formed, described transformer comprises the 5th inductance, the 6th inductance, the 7th inductance and the 8th inductance, described first electric capacity, one end is as input, the other end connects described the 5th inductance one end, described second electric capacity, one end is as output, the other end connects the other end of described the 5th inductance, described the 6th inductance one end is connected back ground connection with described the 7th inductance one end, the other end of described the 6th inductance connects an end of described the 8th inductance, described the 7th inductance other end connects described the 5th inductance other end, described first resistance of connecting between described the 8th inductance one end and the ground wire, described the 3rd electric capacity is in parallel with described first resistance, described the 8th inductance other end connects described the 4th electric capacity one end, described the 4th electric capacity other end ground connection, described the 4th electric capacity one end connects described second resistance, one end, described the 5th electric capacity of connecting between the described second resistance other end and the ground wire, described first inductance, one end connects the other end of described second resistance, the described first inductance other end ground connection, be connected in the middle of described first inductance with in the middle of described second inductance, and its connection is in described the 6th electric capacity of series connection between the ground wire, described second inductance, one end connects described the 3rd inductance one end, the described second inductance other end connects described the 4th inductance one end, described the 3rd resistance of series connection between described the 3rd inductance other end and described the 4th inductance other end, described the 7th electric capacity one end is as first branch end, the other end connects described second inductance, one end, described the 8th electric capacity one is as second branch end, and the other end connects the other end of described second inductance.
2. as claimed in claim 1 pair of branch end splitter circuit, it is characterized in that: described the 7th electric capacity is identical with the capacitance of described the 8th electric capacity.
3. as claimed in claim 1 pair of branch end splitter circuit, it is characterized in that: described first electric capacity is identical with the capacitance of described second electric capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320298375 CN203233497U (en) | 2013-05-28 | 2013-05-28 | Dual-branch terminal branching device circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320298375 CN203233497U (en) | 2013-05-28 | 2013-05-28 | Dual-branch terminal branching device circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203233497U true CN203233497U (en) | 2013-10-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320298375 Expired - Fee Related CN203233497U (en) | 2013-05-28 | 2013-05-28 | Dual-branch terminal branching device circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203233497U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110875509A (en) * | 2018-08-31 | 2020-03-10 | 株式会社村田制作所 | Directional coupler |
-
2013
- 2013-05-28 CN CN 201320298375 patent/CN203233497U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110875509A (en) * | 2018-08-31 | 2020-03-10 | 株式会社村田制作所 | Directional coupler |
| US11121444B2 (en) | 2018-08-31 | 2021-09-14 | Murata Manufacturing Co., Ltd. | Directional coupler |
| CN110875509B (en) * | 2018-08-31 | 2023-01-17 | 株式会社村田制作所 | Directional coupler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131009 Termination date: 20200528 |