CN101609919A - A kind of braodband directional coupler - Google Patents
A kind of braodband directional coupler Download PDFInfo
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- CN101609919A CN101609919A CNA2009101442520A CN200910144252A CN101609919A CN 101609919 A CN101609919 A CN 101609919A CN A2009101442520 A CNA2009101442520 A CN A2009101442520A CN 200910144252 A CN200910144252 A CN 200910144252A CN 101609919 A CN101609919 A CN 101609919A
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Abstract
The present invention relates to a kind of braodband directional coupler, comprise cavity, cavity is placed with conductor main line and conductor by-pass, and the two ends of conductor main line and conductor by-pass are connected connector respectively, and the cross sectional shape of described conductor main line and conductor by-pass is circular; Conductor main line and conductor by-pass are divided into conductor main body and conductor connector, and the two ends of conductor main body are connected with the conductor connector respectively, and the other end that four conductor connectors are connected with conductor body is connected with described connector respectively.The directed cavity coupler of more piece circular concentric conductor of the present invention has less coupling flatness, high directivity, low intermodulation, low Insertion Loss, high-power, the advantage that is easy to process.
Description
Technical field
The present invention relates to employed coupler in a kind of communication, the Radar Technology field, especially refer to a kind of directed cavity coupler.
Background technology
Directional coupler is used for microwave signal and distributes by special ratios or synthesize power, is one of element the most frequently used in the microwave technical field.The leading indicator of directional coupler is the degree of coupling, coupling flatness, directivity, standing-wave ratio, third order intermodulation etc.For realizing high-power applications, existing directional coupler is many to be occurred with air chamber rectangle strip lines configuration and the circular single-unit strip line of air chamber; For realizing broadband or ultra wideband applications, directional coupler is many to be occurred with multistage parallel coupled line cascade system, generally speaking, the progression of bandwidth and cascade is in case determine that the degree of coupling, coupling flatness determine that thereupon its actual size then is subjected to coupling gap, be the spacing and the cross-sectional area of conductor size impact of conductor, discontinuity influence when standing-wave ratio and directivity then are subjected to the size saltus step, the debugging amount is huge during actual production, and the intermodulation index is influenced and variation by the coaxial port connection welding more.Being used to guide electromagnetic cross-sectional area of conductor in the existing air chamber rectangle strip line directional coupler is rectangle, generally speaking, the position of placing in air chamber according to coupling conductors concerns, the coupling of broadside coupled and narrow limit can be arranged, different according to the spacing of conductor and sectional dimension produce the coupler of different coupling coefficients.No matter which kind of structure, all can face such problem in producing the wide-band coupler process: 1. the spacing of the parallel coupled line conductor of close coupling part is too small in the wide-band coupler, as for the 3DB coupler, the cavity depth and cross-sectional area of conductor size are not outstanding to the spacing influence, its conductor spacing is all about 0.3mm, process difficult accurate control, the degree of coupling is very obvious with the flatness variation that is coupled when being directed at production, and index debugging amount is big; 2. the parallel coupled line conductor spacing of loose coupling part is excessive in the wide-band coupler, and bandwidth is wide more, and spacing is big more, and discontinuity is increased; Bandwidth is wide more in causing producing, and progression is many more, and coupler directivity that the degree of coupling is loose more and standing-wave ratio are all poor.3. the rectangular conductor cross section is a rectangle, and its four jiaos storage electric weight are more, is not so good as the conductor of circular cross-section when high-power applications.Above-mentioned preceding two problems have directly influenced production efficiency and rate of finished products, and the 3rd problem then limited high-power applications.
Summary of the invention
The present invention is a weak point of avoiding above-mentioned prior art to exist, and a kind of have less coupling flatness, high directivity, low intermodulation, low Insertion Loss, the directed cavity coupler of more piece circular concentric conductor high-power, that be easy to process are provided.
The present invention is achieved by the following technical solutions:
A kind of braodband directional coupler comprises cavity, and cavity is placed with conductor main line and conductor by-pass, and the two ends of conductor main line and conductor by-pass are connected connector respectively, and the cross sectional shape of described conductor main line and conductor by-pass is circular; Conductor main line and conductor by-pass are divided into conductor main body and conductor connector, and the two ends of conductor main body are connected with the conductor connector respectively, and the other end that four conductor connectors are connected with conductor body is connected with described connector respectively.
A kind of braodband directional coupler, the conductor main body of described conductor main line and conductor by-pass is the right angle with angle after the conductor connector is connected.
A kind of braodband directional coupler, the conductor main body of described conductor main line is 180 degree angles with angle after the conductor connector is connected.
A kind of braodband directional coupler is provided with the section body of reentrying in the described cavity, the section of reentrying body is a cuboid, is arranged with the through hole that passes in order to main line and by-pass in the section of the reentrying body.
A kind of braodband directional coupler, the conductor main body of described conductor main line and conductor by-pass are more piece circular concentric conductor.
A kind of braodband directional coupler, described conductor main line is parallel with the cavity bottom surface with the conductor by-pass.
A kind of braodband directional coupler, the conductor connector of described conductor main line and conductor by-pass is connected with connector by bolt or contact pin.
A kind of braodband directional coupler, the more piece diameter difference of described more piece concentric circles conductor.
A kind of braodband directional coupler, described conductor main line and conductor by-pass are on same horizontal plane and be parallel to each other.
A kind of braodband directional coupler, the more piece diameter of described more piece concentric circles conductor becomes greatly after diminishing greatly gradually or diminish gradually again after end to end diameter elder generation becomes greatly gradually or diminishing gradually after the end to end diameter becomes greatly earlier gradually once more gradually from end to end.
Compared with prior art, beneficial effect of the present invention is embodied in:
1, adopted the conductor of circular cross-section, under the area of section situation identical with the square-section area, improved maximum power capabilities, maximum has reduced loss.
2, adopt the round conductor cascade of different-diameter, and guaranteed concentricity.
3, the distance between axles of diameter by changing round conductor rather than round conductor realizes the purpose of the different degrees of coupling, it is broadband that existing single-unit reentry formula structure coupler can be realized, it is broadband that existing single-unit round conductor parallel coupled line coupler is realized.
4, adopt the conductor of circular cross-section, when being connected, adopt to be threaded or the contact pin connection, accomplished to exempt from weldering, improved process velocity and realized good third order intermodulation with coaxial connector.
Description of drawings
Fig. 1 is the directional coupler first embodiment internal structure schematic diagram of the present invention;
Fig. 2 is the directional coupler second embodiment internal structure schematic diagram of the present invention;
Fig. 3 is a directional coupler round conductor structural representation of the present invention.
Embodiment
Embodiment 1
As shown in Figure 1.
Braodband directional coupler, comprise cavity 1, cavity 1 is placed with conductor main line and conductor by-pass, conductor main line and conductor by-pass are divided into conductor main line main body 4, conductor main line connector 5,6 and conductor by-pass main body 7, conductor by-pass connector 8,9, and conductor main line connector 5,6 and conductor by-pass connector 8,9 are connected with four conductor connectors 5,6,8,9 by bolt or contact pin respectively.Conductor main line main body 4 is parallel with cavity 1 bottom surface with conductor by-pass main body 7.Conductor main line main body 4 and conductor by-pass main body 7 are on same horizontal plane and be parallel to each other.The cross sectional shape of conductor main line main body 4 and conductor by-pass main body 7 is circular; Angle after conductor main line main body 4, conductor by-pass main body 7 and conductor main line connector 5,6, conductor by-pass connector 8,9 are connected is the right angle.The more piece diameter difference of more piece concentric circles conductor.The more piece diameter of more piece concentric circles conductor becomes greatly after diminishing greatly gradually or diminish gradually again after end to end diameter elder generation becomes greatly gradually or diminishing gradually after the end to end diameter becomes greatly earlier gradually once more gradually from end to end.By changing each section diameter and institute's respective chamber degree of depth, can guarantee to produce the needed degree of coupling under the concentric situation, thereby improve coupling flatness in the bandwidth; Change the odd mode impedance and the impedance of coupling mould of conductor main line main body 4 and conductor by-pass main body 7 simultaneously, thereby improve the directivity and the standing-wave ratio of directional coupler, conductor main line connector 5,6, conductor by-pass connector 8,9 adopt screw thread or contact pin mode to be connected with connector 5,6,8,9, exempt from weldering, lowered third order intermodulation and improved production efficiency.
As shown in Figure 2.
Braodband directional coupler, comprise cavity 1, cavity 1 is placed with conductor main line and conductor by-pass, conductor main line and conductor by-pass are divided into conductor main line main body 4, conductor main line connector 5,6 and conductor by-pass main body 7, conductor by-pass connector 8,9, and conductor main line connector 5,6 and conductor by-pass connector 8,9 are connected with four conductor connectors 5,6,8,9 by bolt or contact pin respectively.Conductor main line main body 4 is parallel with cavity 1 bottom surface with conductor by-pass main body 7.Conductor main line main body 4 and conductor by-pass main body 7 are on same horizontal plane and be parallel to each other.The cross sectional shape of conductor main line main body 4 and conductor by-pass main body 7 is circular; Angle after conductor main line main body 4, conductor by-pass main body 7 and conductor main line connector 5,6, conductor by-pass connector 8,9 are connected is the right angle.Be provided with the section body 14 of reentrying in the cavity, the section of reentrying body 14 is a cuboid, is arranged with the through hole 15,16 that passes in order to conductor main line main body and conductor by-pass main body in the section of the reentrying body 14.The more piece diameter difference of more piece concentric circles conductor.The more piece diameter of more piece concentric circles conductor becomes greatly after diminishing greatly gradually or diminish gradually again after end to end diameter elder generation becomes greatly gradually or diminishing gradually after the end to end diameter becomes greatly earlier gradually once more gradually from end to end.By changing each section diameter and institute's respective chamber degree of depth, can guarantee to produce the needed degree of coupling under the concentric situation, thereby improve coupling flatness in the bandwidth; Change the odd mode impedance and the impedance of coupling mould of conductor main line main body 4 and conductor by-pass main body 7 simultaneously, thereby improve the directivity and the standing-wave ratio of directional coupler, conductor main line connector 5,6, conductor by-pass connector 8,9 adopt screw thread or contact pin mode to be connected with connector 5,6,8,9, exempt from weldering, lowered third order intermodulation and improved production efficiency.
Claims (10)
1, a kind of braodband directional coupler comprises cavity, and cavity is placed with conductor main line and conductor by-pass, and the two ends of conductor main line and conductor by-pass are connected connector respectively, and the cross sectional shape that it is characterized in that described conductor main line and conductor by-pass is for circular; Conductor main line and conductor by-pass are divided into conductor main body and conductor connector, and the two ends of conductor main body are connected with the conductor connector respectively, and the other end that four conductor connectors are connected with conductor body is connected with described connector respectively.
2, a kind of braodband directional coupler according to claim 1, the conductor main body that it is characterized in that described conductor main line and conductor by-pass is the right angle with angle after the conductor connector is connected.
3, a kind of braodband directional coupler according to claim 1, the conductor main body that it is characterized in that described conductor main line is 180 degree angles with angle after the conductor connector is connected.
4, a kind of braodband directional coupler according to claim 1 is characterized in that being provided with in the described cavity section body of reentrying, and the section of reentrying body is a cuboid, is arranged with the through hole that passes in order to main line and by-pass in the section of the reentrying body.
5, a kind of braodband directional coupler according to claim 1 and 2, the conductor main body that it is characterized in that described conductor main line and conductor by-pass are more piece circular concentric conductor.
6, a kind of braodband directional coupler according to claim 1 and 2 is characterized in that described conductor main line is parallel with the cavity bottom surface with the conductor by-pass.
7, a kind of braodband directional coupler according to claim 1 and 2 is characterized in that the conductor connector of described conductor main line and conductor by-pass is connected with connector by bolt or contact pin.
8, a kind of braodband directional coupler according to claim 5 is characterized in that the more piece diameter difference of described more piece concentric circles conductor.
9, a kind of braodband directional coupler according to claim 6 is characterized in that described conductor main line and conductor by-pass are on same horizontal plane and be parallel to each other.
10, a kind of braodband directional coupler according to claim 8 is characterized in that the more piece diameter of described more piece concentric circles conductor becomes greatly after diminishing greatly gradually or diminish gradually again or diminishing gradually once more gradually from end to end after the end to end diameter becomes greatly earlier gradually after end to end diameter elder generation becomes greatly gradually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009101442520A CN101609919A (en) | 2009-07-27 | 2009-07-27 | A kind of braodband directional coupler |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009101442520A CN101609919A (en) | 2009-07-27 | 2009-07-27 | A kind of braodband directional coupler |
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| CN101609919A true CN101609919A (en) | 2009-12-23 |
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| CNA2009101442520A Pending CN101609919A (en) | 2009-07-27 | 2009-07-27 | A kind of braodband directional coupler |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101882704A (en) * | 2010-04-29 | 2010-11-10 | 合肥威科电子技术有限公司 | Novel air cavity bridge for microwave communication |
| CN102694226A (en) * | 2012-05-31 | 2012-09-26 | 安徽海特微波通信有限公司 | Weak-coupling directional coupler |
| CN103151594A (en) * | 2013-03-26 | 2013-06-12 | 成都安擎微波科技有限责任公司 | Directional coupler |
-
2009
- 2009-07-27 CN CNA2009101442520A patent/CN101609919A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101882704A (en) * | 2010-04-29 | 2010-11-10 | 合肥威科电子技术有限公司 | Novel air cavity bridge for microwave communication |
| CN102694226A (en) * | 2012-05-31 | 2012-09-26 | 安徽海特微波通信有限公司 | Weak-coupling directional coupler |
| CN103151594A (en) * | 2013-03-26 | 2013-06-12 | 成都安擎微波科技有限责任公司 | Directional coupler |
| CN103151594B (en) * | 2013-03-26 | 2015-09-09 | 成都安擎微波科技有限责任公司 | A kind of directional coupler |
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Application publication date: 20091223 |