CN204271237U - A kind of DC feedback directional coupler - Google Patents
A kind of DC feedback directional coupler Download PDFInfo
- Publication number
- CN204271237U CN204271237U CN201420804752.9U CN201420804752U CN204271237U CN 204271237 U CN204271237 U CN 204271237U CN 201420804752 U CN201420804752 U CN 201420804752U CN 204271237 U CN204271237 U CN 204271237U
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- CN
- China
- Prior art keywords
- cavity
- directional coupler
- wound inductor
- feedback
- main line
- Prior art date
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- Expired - Fee Related
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- 238000002955 isolation Methods 0.000 claims abstract description 14
- 238000007747 plating Methods 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 239000004020 conductor Substances 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000008054 signal transmission Effects 0.000 abstract description 2
- 238000004078 waterproofing Methods 0.000 abstract description 2
- 210000003298 dental enamel Anatomy 0.000 description 7
- 238000012546 transfer Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Transmitters (AREA)
Abstract
The utility model discloses a kind of DC feedback directional coupler, comprise Packed cavity, the isolation load be arranged in cavity, be arranged in cavity and be connected to main line between cavity input and output, be arranged in cavity and be connected to the by-pass between cavity coupled end and isolation load, be connected with low pass filter between main line and by-pass, one end that by-pass is connected with isolation load is provided with capacitance.The utility model structure is simple, cost of manufacture is low, can realize the function of coupled output ports DC feedback and microwave signal transmission simultaneously, and is arranged in seal chamber due to DC channel, has good water proofing property.
Description
Technical field
The utility model relates to directional coupler field, specifically a kind of DC feedback directional coupler.
Background technology
Along with the development of microwave communication techniques, multisystem co-sited, the application mode of antenna feeder is more and more applied altogether.Resource common source can be reached by these modes, reduce equipment, the advantage reduced costs.In mobile communications, coupler is essential, and its Main Function distributes completing power-directed.The microwave signal inputted from input can only be transferred to coupled end by coupling by existing coupler, but direct current signal but cannot pass through coupling port, namely the direct current signal inputted from input cannot be coupled to coupled end and export.And in order to reach saving feeder cable, the requirement of simplification system, and the test that starts of the active equipment such as active antenna uses, and powering-off state ensure can base station towers emergency power supply use, so this just proposes the function also will with logical direct current to the coupler be connected with feeder cable, and existing coupler cannot realize the object of coupled output ports DC feedback.
Utility model content
Cannot transfer to the problem of coupler coupled end output for solving current direct current signal, the utility model provides a kind of DC feedback directional coupler.
For reaching above-mentioned purpose, the technical solution of the utility model is:
A kind of DC feedback directional coupler, comprising: the cavity of sealing; Be arranged at the isolation load in cavity; To be arranged in cavity and the main line be connected between cavity input and output; To be arranged in cavity and the by-pass be connected between cavity coupled end and isolation load; And, be connected to the low pass filter between main line and by-pass.
Further, capacitance is connected with between described by-pass and isolation load.
Further, described low pass filter is magnet ring wire-wound inductor or magnetic core wire-wound inductor; The inner bottom plating of described cavity is provided with fixed block, and described magnet ring wire-wound inductor or magnetic core wire-wound inductor are fixed on fixed block; Described magnet ring wire-wound inductor or the vertical range between magnetic core wire-wound inductor and cavity inner bottom plating are more than or equal to 1mm; The coiling of described magnet ring wire-wound inductor or magnetic core wire-wound inductor is copper plain conductor.
Advantage of the present utility model:
(1) the utility model by connecting low pass filter between main line and by-pass, and because the frequency of direct current signal is lower than the resonance frequency of low pass filter, coupled end can be transferred to by main line, low pass filter and by-pass successively from the direct current signal of input input, capacitance can stop direct current signal to transfer in isolation load and distribute direct current simultaneously, realizes the function of DC feedback;
(2) because the frequency of microwave signal is far above the resonance frequency of low pass filter, so cannot pass through low pass filter from the microwave signal of input input, microwave signal also transfers to coupled end output in a coupled manner, realizes the transmission of microwave signal;
(3) resonance frequency of low pass filter is extremely low, far below the frequency that main line and by-pass normally work, does not substantially affect the third order intermodulation index of coupler;
(4) this utility structure is simple, cost of manufacture is low, can realize the function of DC feedback and microwave signal transmission, and is arranged in seal chamber due to low pass filter, has good water proofing property.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of low pass filter 6 in the utility model embodiment;
Fig. 3 is the structural representation of low pass filter 6 in another embodiment of the utility model;
Embodiment
As Fig. 1, a kind of DC feedback directional coupler, comprise Packed cavity 1, the isolation load 2 be arranged in cavity 1, be arranged in cavity 1 and be connected to linear structure between cavity input 101 and output 102 main line 3, be arranged in cavity 1 and be connected to U-shaped structure between cavity coupled end 103 and isolation load 2 by-pass 4, be connected to low pass filter 6 between main line 3 and by-pass 4.
Preferably, capacitance 5 is provided with between by-pass 4 and isolation load 2; On main line 3, contiguous input 101 place is provided with the first groove 10, and on by-pass 4, contiguous output is provided with the second groove 11.
Cavity inner bottom plating 104 is provided with fixed block 7, fixed block 7 is for fixed low-pass filters 6.
As the embodiment that Fig. 2 is low pass filter 6 in the utility model, low pass filter 6 is magnet ring wire-wound inductor, be entwined around magnet ring 602 by enamel covered wire 601, one end of enamel covered wire 601 connects main line 3, the other end connects by-pass 4, magnet ring 602 is fixed on fixed block 7, and the vertical range between enamel covered wire 601 and cavity inner bottom plating 104 is more than or equal to 1mm.
As another embodiment that Fig. 3 is low pass filter 6 in the utility model, low pass filter 6 is magnetic core wire-wound inductor, be entwined around magnetic core 603 by enamel covered wire 601, one end of enamel covered wire 601 connects main line 3, the other end connects by-pass 4, magnetic core 603 is fixed on fixed block 7, and the vertical range between enamel covered wire 601 and cavity inner bottom plating 104 is more than or equal to 1mm.
When direct current signal inputs from input 101, direct current signal is input to coupled end 103 by main line 3, low pass filter 6, by-pass 4 successively; Direct current signal is input to output 102 by main line 1 simultaneously, distributes direct current, realize the function of DC feedback because capacitance 5 can stop direct current signal to transfer in isolation load 2.
When microwave signal inputs from input 101, because microwave frequency is far above the resonance frequency of low pass filter, microwave signal is input to output 102 via main line 3, and the coupling formed due to main line 3 and by-pass 4 is transferred to coupled end 103, completes the transmission of microwave signal.
By adjusting the winding space of enamel covered wire 601, adjustable resonance frequency and loaded Q.
By adjusting size and the position of the first groove 10 and the second groove 11, the return loss of adjustable input 101, output 102 and coupled end 103.
Those of ordinary skill in the art will appreciate that, embodiment described here is to help reader understanding's principle of the present utility model, should be understood to that protection range of the present utility model is not limited to so special statement and embodiment.Those of ordinary skill in the art can make various other various concrete distortion and combination of not departing from the utility model essence according to these technology enlightenment disclosed in the utility model, and these distortion and combination are still in protection range of the present utility model.
Claims (6)
1. a DC feedback directional coupler, is characterized in that comprising: the cavity of sealing; Be arranged at the isolation load in cavity; To be arranged in cavity and the main line be connected between cavity input and output; To be arranged in cavity and the by-pass be connected between cavity coupled end and isolation load; And, be connected to the low pass filter between main line and by-pass.
2. a kind of DC feedback directional coupler according to claim 1, is characterized in that: be connected with capacitance between described by-pass and isolation load.
3. a kind of DC feedback directional coupler according to claim 1, is characterized in that: described low pass filter is magnet ring wire-wound inductor or magnetic core wire-wound inductor.
4. a kind of DC feedback directional coupler according to claim 3, is characterized in that: the inner bottom plating of described cavity is provided with fixed block, and described magnet ring wire-wound inductor or magnetic core wire-wound inductor are fixed on fixed block.
5. a kind of DC feedback directional coupler according to claim 4, is characterized in that: described magnet ring wire-wound inductor or the vertical range between magnetic core wire-wound inductor and cavity inner bottom plating are more than or equal to 1mm.
6. a kind of DC feedback directional coupler according to claim 3, is characterized in that: the coiling of described magnet ring wire-wound inductor or magnetic core wire-wound inductor is copper plain conductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420804752.9U CN204271237U (en) | 2014-12-17 | 2014-12-17 | A kind of DC feedback directional coupler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420804752.9U CN204271237U (en) | 2014-12-17 | 2014-12-17 | A kind of DC feedback directional coupler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204271237U true CN204271237U (en) | 2015-04-15 |
Family
ID=52806084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420804752.9U Expired - Fee Related CN204271237U (en) | 2014-12-17 | 2014-12-17 | A kind of DC feedback directional coupler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204271237U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108511866A (en) * | 2018-05-18 | 2018-09-07 | 斯必能通讯器材(上海)有限公司 | A kind of adjustable power coupler of impedance auto-match |
-
2014
- 2014-12-17 CN CN201420804752.9U patent/CN204271237U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108511866A (en) * | 2018-05-18 | 2018-09-07 | 斯必能通讯器材(上海)有限公司 | A kind of adjustable power coupler of impedance auto-match |
| CN108511866B (en) * | 2018-05-18 | 2024-01-30 | 斯必能通讯器材(上海)有限公司 | Power coupler with adjustable impedance automatic matching |
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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 |
Granted publication date: 20150415 |