CN202721252U - Direct current feed directional coupler - Google Patents
Direct current feed directional coupler Download PDFInfo
- Publication number
- CN202721252U CN202721252U CN 201220311317 CN201220311317U CN202721252U CN 202721252 U CN202721252 U CN 202721252U CN 201220311317 CN201220311317 CN 201220311317 CN 201220311317 U CN201220311317 U CN 201220311317U CN 202721252 U CN202721252 U CN 202721252U
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- CN
- China
- Prior art keywords
- cavity
- directional coupler
- inductance coil
- pass filter
- spiral inductance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a direct current (DC) feed directional coupler, which comprises a sealed cavity, an isolation load arranged in the cavity, a mainline arranged in the cavity and connected between an input end and an output end of the cavity, and a sub-line arranged in the cavity and connected between a coupling end of the cavity and the isolation load, wherein a low pass filter is connected between the mainline and the sub-line, and one end, which is connected with the isolation load, of the sub-line is provided with a stopping condenser. The DC feed directional coupler is simple in structure and low in production cost, and can realize functions of coupling output port DC feed and microwave signal transmission simultaneously. In addition, a DC channel is arranged in the sealed cavity, thereby having excellent waterproof performance.
Description
Technical field
The utility model relates to the directional coupler field, specifically a kind of DC feedback directional coupler.
Background technology
Along with the development of microwave communication technology, polyphyly is altogether stood, and the application mode of antenna feeder is more and more used altogether.Can reach the resource common source by these modes, minimizing equipment, the advantage of reduction cost.In mobile communication, coupler is essential, and its Main Function is to distribute finishing power-directed.Existing coupler can only be transferred to coupled end by coupling with the microwave signal from the input input, but direct current signal but can't pass through coupling port, namely the direct current signal from the input input can't be coupled to coupled end output.And in order to reach the saving feeder cable, the requirement of simplification system, and the test that begins of the active equipment such as active antenna is used, and powering-off state guarantee can base station towers emergency power supply use, so this has just proposed also will have the function of perfectly straight stream to the coupler that is connected with feeder cable, the purpose of output port DC feedback and existing coupler can't be realized being coupled.
The utility model content
The technical problems to be solved in the utility model provides a kind of DC feedback directional coupler, solves the problem that present direct current signal can't transfer to the output of coupler coupled end.
The technical solution of the utility model is:
A kind of DC feedback directional coupler, comprise Packed cavity, be arranged at isolation load in the cavity, be arranged in the cavity and be connected in main line between cavity input and the output, be arranged in the cavity and be connected in the cavity coupled end and the isolation load between by-pass, be connected with low pass filter between described main line and the by-pass; Be connected with capacitance between described by-pass and the isolation load.
Described low pass filter by a feedthrough capacitor, be connected in the first spiral inductance coil between feedthrough capacitor and the main line and be connected in feedthrough capacitor and by-pass between the second spiral inductance coil form.
The input of the contiguous cavity in the junction of described low pass filter and main line; The coupled end of the contiguous cavity in the junction of described low pass filter and by-pass.
Be provided with fixed block on the described cavity inner bottom plating, described feedthrough capacitor is fixed on the fixed block.
Described the first spiral inductance coil and the second spiral inductance coil all are to be formed by copper plain conductor coiled coil.
Described the first spiral inductance coil and the second spiral inductance coil respectively and the vertical range between the cavity inner bottom plating more than or equal to 1mm.
Advantage of the present utility model:
(1), the utility model is 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, can transfer to coupled end 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 the isolation load and distribute direct current simultaneously, realizes the function of DC feedback;
(2), since the frequency of microwave signal far above the resonance frequency of low pass filter, so can't pass through low pass filter from the microwave signal of input input, microwave signal also transfers to coupled end output in the mode of coupling, the transmission of realization microwave signal;
(3), the resonance frequency of low pass filter is extremely low, far below the frequency of main line and by-pass normal operation, substantially do not affect the third order intermodulation index of coupler.
This utility structure is simple, cost of manufacture is low, can realize the function of DC feedback and microwave signal transmission, and because low pass filter is arranged in the seal chamber, has good water proofing property.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the johning knot composition of the utility model low pass filter and fixed block.
Embodiment
See Fig. 1, a kind of DC feedback directional coupler, comprise Packed cavity 1, be arranged at isolation load 2 in the cavity 1, be arranged in the cavity 1 and be connected in linear structure between cavity input 101 and the output 102 main line 3, be arranged in the cavity 1 and be connected in cavity coupled end 103 and isolation load 2 between the U-shaped structure by-pass 4, be connected in low pass filter between main line 3 and the by-pass 4, be connected in by-pass 4 and the capacitance 5 of isolating between the load 2;
Low pass filter by a feedthrough capacitor 6, be connected in the first spiral inductance coil 7 between feedthrough capacitor 6 and the main line 3 and be connected in feedthrough capacitor 6 and by-pass 4 between the second spiral inductance coil 8 form, and the input 101 of the contiguous cavity in the junction of spiral inductance coil 7 and main line 3, the coupled end 103 of the contiguous cavity in junction of the second spiral inductance coil 8 and by-pass 4, contiguous the first spiral inductance coil 7 is provided with the first groove 10 with the junction of main line 3 on the main line 3, and contiguous the second spiral inductance coil 8 is provided with the second groove 11 with the junction of by-pass 4 on the by-pass;
See Fig. 2, be provided with fixed block 9 on the cavity inner bottom plating 104, feedthrough capacitor 7 passes fixed block 9 and is fixedly connected with it, the first spiral inductance coil 7 and the second spiral inductance coil 8 respectively and the vertical range between the cavity inner bottom plating 104 more than or equal to 1mm.
When direct current signal during from input 101 input, direct current signal is input to coupled end 103 by main line 3, low pass filter, by-pass 4 successively; Direct current signal is input to output 102 by main line 1 simultaneously, distributes direct current because capacitance 5 can stop direct current signal to transfer in the isolation load 2, realizes the function of DC feedback.
When microwave signal during from input 101 input, because microwave frequency is far above the resonance frequency of low pass filter, microwave signal is input to output 102 via main line, because the coupling that main line 3 and by-pass 4 form is transferred to coupled end, has finished the transmission of microwave signal.
By adjusting the winding space of the first spiral inductance coil 7 and the second spiral inductance coil 8, capable of regulating 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 capable of regulating input 101, output 102 and coupled end 103.
Claims (6)
1. DC feedback directional coupler, comprise Packed cavity, be arranged at isolation load in the cavity, be arranged in the cavity and be connected in main line between cavity input and the output, be arranged in the cavity and be connected in the cavity coupled end and the isolation load between by-pass, it is characterized in that: be connected with low pass filter between described main line and the by-pass; Be connected with capacitance between described by-pass and the isolation load.
2. a kind of DC feedback directional coupler according to claim 1 is characterized in that: described low pass filter by a feedthrough capacitor, be connected in the first spiral inductance coil between feedthrough capacitor and the main line and be connected in low pass filter and by-pass between the second spiral inductance coil form.
3. a kind of DC feedback directional coupler according to claim 1 is characterized in that: the input of the contiguous cavity in the junction of described low pass filter and main line; The coupled end of the contiguous cavity in the junction of described low pass filter and by-pass.
4. a kind of DC feedback directional coupler according to claim 2, it is characterized in that: be provided with fixed block on the described cavity inner bottom plating, described feedthrough capacitor is fixed on the fixed block.
5. a kind of DC feedback directional coupler according to claim 2, it is characterized in that: described the first spiral inductance coil and the second spiral inductance coil all are to be formed by copper plain conductor coiled coil.
6. a kind of DC feedback directional coupler according to claim 2 is characterized in that: described the first spiral inductance coil and the second spiral inductance coil respectively and the vertical range between the cavity inner bottom plating more than or equal to 1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220311317 CN202721252U (en) | 2012-06-29 | 2012-06-29 | Direct current feed directional coupler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220311317 CN202721252U (en) | 2012-06-29 | 2012-06-29 | Direct current feed directional coupler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202721252U true CN202721252U (en) | 2013-02-06 |
Family
ID=47623058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220311317 Expired - Fee Related CN202721252U (en) | 2012-06-29 | 2012-06-29 | Direct current feed directional coupler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202721252U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108767404A (en) * | 2018-07-02 | 2018-11-06 | 合肥本源量子计算科技有限责任公司 | A kind of cryrogenic coupler and its application method |
-
2012
- 2012-06-29 CN CN 201220311317 patent/CN202721252U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108767404A (en) * | 2018-07-02 | 2018-11-06 | 合肥本源量子计算科技有限责任公司 | A kind of cryrogenic coupler and its application method |
| CN108767404B (en) * | 2018-07-02 | 2023-08-04 | 本源量子计算科技（合肥）股份有限公司 | Low-temperature coupler and application method thereof |
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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: 20130206 Termination date: 20210629 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |