CN202678492U - Multi-hole microtrip directional coupler positioned on one side of main microtrip - Google Patents
Multi-hole microtrip directional coupler positioned on one side of main microtrip Download PDFInfo
- Publication number
- CN202678492U CN202678492U CN 201220393956 CN201220393956U CN202678492U CN 202678492 U CN202678492 U CN 202678492U CN 201220393956 CN201220393956 CN 201220393956 CN 201220393956 U CN201220393956 U CN 201220393956U CN 202678492 U CN202678492 U CN 202678492U
- Authority
- CN
- China
- Prior art keywords
- main
- little band
- little
- coupling
- microtrip
- 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
Links
Images
Abstract
The utility model discloses a multi-hole microtrip directional coupler positioned on one side of a main microtrip. The multi-hole microtrip directional coupler comprises the main microtrip, an auxiliary microtrip and coupling holes; the main microtrip and the auxiliary microtrip are isolated from each other through a grounding face therebetween; the main microtrip is communicated with the auxiliary microtrip through at least three coupling holes; the projection of at least one coupling hole is positioned between the side wall of a conductor belt of the main microtrip and the side wall of a conductor belt of the auxiliary microtrip and is communicated with the main microtrip and the auxiliary microtrip; the coupling holes are arranged along the axis direction of the main microtrip; and at least two adjacent coupling holes are positioned on one side of the axis of the main microtrip and along the axis direction of the main microtrip. The multi-hole microtrip directional coupler has the advantages of compact structure, simplicity in processing, ultra-wide operation bandwidth, large power capacity and low insertion loss.
Description
Technical field
The utility model relates to multi-hole directional coupler, specifically, relates to a kind of main little porous microstrip directional coupler with a side that is positioned at that a plurality of holes are coupled that utilizes.
Background technology
Directional coupler is widely used a kind of microwave device in the microwave system, and its Main Function is that microwave signal is carried out power division according to a certain percentage; Directional coupler is made of two transmission lines, and coaxial line, rectangular waveguide, circular waveguide, strip line and microstrip line etc. all can consist of directional coupler; So of a great variety from the structure directional coupler, widely different, but mainly be divided into four kinds from their coupling mechanism, i.e. aperture coupling, parallel coupling, branch's coupling and coupling double T.
Before early 1950s, nearly all microwave equipment all adopts metal waveguide and waveguide circuit, and directional coupler at that time also mostly is the Waveguide Hole coupling directional coupler; Its theoretical foundation is the Bethe slot-coupling theory, and the people such as Cohn and Levy have also done a lot of contributions.
Development along with the aerospace technology, require microwave circuit and system to accomplish miniaturization, lightweight and dependable performance, so strip line and microstrip line have occurred, because the microwave integrated transmission-lines such as fin line, the line of rabbet joint, co-planar waveguide and coplanar stripline have appearred again in the needs of microwave circuit and system in succession, various transmission line directional couplers have so just appearred subsequently.
The tradition single-hole directional coupler has some advantage: as simple in structure, parameter is few, design is got up more convenient; But it also exists some shortcomings: poor such as narrow bandwidth, directivity, only suitable in the work of design frequency place.Drift out this frequency, directivity will reduce.
Although the tradition multi-hole directional coupler can be accomplished that very wide bandwidth, directivity also have very and improve, but also exist some shortcomings, large such as volume, requirement on machining accuracy is high, insertion loss is high, particularly at the millimeter wave terahertz wave band, too high Insertion Loss makes this device lose use value; This just encourages us to remove to design a kind of novel porous directional coupler that can overcome these shortcomings.
The utility model content
The purpose of this utility model is to overcome some shortcomings of traditional directional coupler, provides a kind of compact, low being positioned at of insertion loss to lead little porous microstrip directional coupler with a side.
To achieve these goals, the technical solution adopted in the utility model is as follows: be positioned at main little porous microstrip directional coupler with a side, comprise as the little band of the master of microwave main channel with as secondary little band of sampled signal passage and as the coupling aperture of coupling channel; The structure of main little band and secondary little band is consistent, and wherein main little band and secondary little band all are made of dielectric layer printing upper conductor band; Main little band and secondary little band are isolated mutually by the ground plane between them; Main little band is communicated with secondary little band by at least 3 coupling apertures that are positioned on the ground plane, the projection section of at least 1 coupling aperture be positioned at outside the conductor belt projection of the conductor belt projection of leading little band and secondary little band and with lead little band and secondary little band conducting; Described coupling aperture is arranged along the axis of main little band, has at least 2 adjacent coupling apertures to be positioned at a side of main little zone axis along main little zone axis direction; Along on main little zone axis direction, the hole of adjacent two coupling apertures in the heart apart from the guide wavelength of the central task frequency of main little band 20% ~ 30% between.
Coupling aperture is circle in its projection of shape of overlooking on the direction.
Coupling aperture is triangle in its projection of shape of overlooking on the direction.
Coupling aperture is polygon in its projection of shape of overlooking on the direction.
The axis of the little band of described master and secondary little band is parallel to each other.
The one or both ends of the little band of described master or secondary little band also are connected with crooked little band.
Described master little band Huo and secondary little band are connected with the matching structure with extraneous device matching in its one or both ends.
Single-hole directional coupler has relatively narrow bandwidth in directivity, so people have expected a series of coupling apertures of design, this a series of coupling aperture forms an array, and several arrays can also stack up, and come thus the comprehensive degree of coupling and directional responses.Utilize the directivity of aperture and the directivity of array to superpose in coupled end, just can obtain better directivity, and this extra degree of freedom can also improve bandwidth.Therefore, in order to increase the coupling performance of coupling aperture, we arrange coupling aperture along the axis direction of main little band, simultaneously in order to increase the bore of coupling aperture, the left side or the right side that are distributed in main little zone axis that we interlock adjacent coupling aperture successively.
With coupling aperture along main little be with a side to arrange after, under the condition that satisfies the coupling reinforcement, be adjacent two coupling apertures the hole in the heart apart from the guide wavelength of the central task frequency that should be arranged on main little band 20% ~ 30% between, so can further add close coupling again and reduce volume, thereby further improve the performance of this porous microstrip directional coupler.
Simultaneously, preferentially selecting cross section is that rectangle column metallic object is arranged in the coupling aperture, and the position of cylindrical metal body in coupling aperture is unrestricted, can arrange according to the actual requirements.
For the volume that makes its whole coupler reduces, we pay the utmost attention to the axis of main little band and the axis of secondary little band be arranged in parallel.
Coupling aperture is unrestricted in its projection of shape of overlooking direction, and when considering cost of manufacture, we pay the utmost attention to circle or triangle or the quadrangle of the simple and easy batch production of energy.
When increasing the cylindrical metal body, described coupling aperture and cylindrical metal body body are Y-shaped or cross and other starlike more than 4 branches in the projection of shape of overlooking direction.
What general microstrip directional coupler adopted all is the parallel coupling principle, is the aperture coupling principle and the utility model adopts, and whole microstrip directional coupler all is sealed within the screening cover, can improve like this directivity of this directional coupler.
Improvement of the present utility model is: 1, the position of traditional coupling aperture is adjusted, design accordingly and the coupling aperture of adjusting rear structure and being complementary, be coupling aperture in the utility model on the ground plane between main little band and the secondary little band in order to be communicated with main little band and secondary little band, can strengthen coupling; 2, because the experiment discovery, when we select a plurality of coupling aperture, the directivity that arrange along the axis of main little band in the adjacent coupled hole is better, when therefore designing, the projection that coupling aperture preferentially is set be attached to main micro belt conductor band sidewall or and the sidewall of secondary micro belt conductor band.Further preferentially be set to: adjacent coupling aperture is sequentially arranged in a side that is positioned at main little band.
When being coupled output according to the above-mentioned coupler of preferentially being arranged to, its course of work is: microwave when locating in the structure Coupling hole, arrives secondary little band by coupling aperture with microwave coupling at first by main little band, can add close coupling; Further because adjacent coupling aperture is positioned at a side of main little band, reinforcement therefore can also further be coupled on the above-mentioned basis that adds close coupling.
Because the utility model adopts the design of a plurality of coupling apertures, has the effect that coupling is strengthened between coupling aperture and the coupling aperture, if the permutation and combination between coupling aperture and the coupling aperture can not reach suitable arranging, then can cause many unfavorable factors, weaken phenomenon such as coupling, we arrange to it and have done corresponding research for this reason, for the volume that reduces whole coupling and the effect that reaches the coupling reinforcement, the further improvement of the utility model is: coupling aperture is arranged along the axis of main little band, is positioned at a side of main little zone axis along the adjacent coupling aperture of main little zone axis direction; Along on main little zone axis direction, the hole of adjacent two coupling apertures in the heart apart from the guide wavelength of the central task frequency of main little band 20% ~ 30% between.Be about to the side that adjacent coupling aperture is distributed in main little zone axis successively, adjacent coupling aperture along main little be with a side to distribute after, reinforcement can further be coupled, thereby further improve the directivity that this is positioned at main little porous rectangular waveguide directional coupler with a side, the hole of the adjacent two coupling apertures in the heart influencing factor of distance is determined by input signal, in addition, because the coupling aperture in the utility model all is positioned at the same side of main little band, therefore be compared to other arrangement mode, its small volume, be arranged in both sides such as coupling aperture, compare with both sides, the design volume of an obvious side is less than the design volume of both sides.
What general microstrip directional coupler adopted all is the parallel coupling principle, is the aperture coupling principle and the utility model adopts, and whole microstrip directional coupler all is sealed within the screening cover, can further improve like this directivity of this directional coupler.
The operation principle of multi-hole directional coupler can be described below:
Because the waveguide inwall can be similar to and regard the ideal conducting plane as.According to the boundary condition of alternating electromagnetic field, ideal conducting plane E only has the component perpendicular with the surface, does not have tangential component; Magnetic field H only has the component tangent with the surface, does not have normal component.The vertical major-minor of main waveguide internal electric field is little is with public broadside, reaches that a part of electric field that complementary wave leads still perpendicular to the public broadside of major-minor waveguide by aperture, and its power line forms an elbow.Magnetic field (magnetic line of force) is the closed curve of parallel main Guide of Wide Wall, pierces into the full curve that passes secondary little band so the magnetic field of main waveguide (magnetic line of force) forms one group at the aperture place.
Entering that a part of electric field that complementary wave leads by aperture leads the coupling aperture both sides at complementary wave and is coupled out vertically downward electric field E
'The electric field E of alternation
'Inspire Induced magnetic field H
'(direction is determined by S=E*H).Electricity, magnetic field alternately excites, and forms respectively the electromagnetic wave to coupled end and isolation end output.
Entering that a part of magnetic field that complementary wave leads by aperture leads the coupling aperture both sides at complementary wave and is coupled out level magnetic field H to the right
'The magnetic field H of alternation
'Inspire the electric field E that inducts
'Electricity, magnetic field alternately excites, and forms respectively the electromagnetic wave to coupled end and isolation end output.
The aperture coupling is above-mentioned electric coupling and magnetic-coupled stack.The electromagnetic wave that two kinds of couplings are formed merges, and we can find out that the electromagnetic wave that transmits toward the coupled end direction superposes in the same way, form coupling output; Electromagnetic wave toward the transmission of isolation end direction oppositely superposes, and the formation of cancelling out each other isolation end is so be to export without coupling in principle.But because aperture is electric, magnetic-coupled asymmetry, both superpose and have produced directivity.
Multi-hole directional coupler utilizes a series of coupling apertures to form an array exactly, and several arrays can also stack up, and come thus the comprehensive degree of coupling and directional responses.Utilize the directivity of aperture and the directivity of array to superpose in coupled end, just can obtain better directivity, and this extra degree of freedom can also improve bandwidth.
The utility model has the advantage of that compact conformation, processing are simple, large, the super wide bandwidth of operation of power capacity, insertion loss be low.Compact of the present utility model is positioned at main little electronic system that is expected to be widely used in each microwave band with a side porous rectangular waveguide directional coupler.
Description of drawings
Fig. 1 is that the adjacent coupled hole is positioned at main little stereogram during with a side in the utility model.
Fig. 2 is the vertical view of the utility model embodiment one.
Fig. 3 is the A-A profile of the utility model embodiment one.
Fig. 4 is the vertical view of the utility model embodiment two.
Fig. 5 is the vertical view of the utility model embodiment three.
Fig. 6 is the vertical view of the utility model embodiment four.
Fig. 7 is the vertical view of the utility model embodiment five.
Fig. 8 is the vertical view of the utility model embodiment six.
Label among the figure is expressed as respectively: 1, lead little band; 2, secondary little band; 3, coupling aperture; 4, cylindrical metal body; 5, crooked little band; 6, conductor belt; 7 ground planes.
Embodiment
Below in conjunction with embodiment the utility model is described in further detail, but the utility model execution mode is not limited to this.
As shown in Figure 1, be positioned at main little porous microstrip directional coupler with a side, comprise as the master of microwave main channel little with 1 and secondary little with 2 and as the coupling aperture 3 of coupling channel as the sampled signal passage; Main little with 1 and secondary little structure with 2 consistent, wherein main little with 1 and secondary little with 2 all by the dielectric layer upper wall or and lower wall print upper conductor band 6 and consist of; Main little with 1 with secondary littlely mutually isolate by the ground planes 7 between them with 2
,Wherein, the number of coupling aperture 3 is 3; Coupling aperture 3 is circle in its projection of shape of overlooking direction, and main little axis and secondary little axis with 2 with 1 is parallel to each other.Coupling aperture 3 is arranged along main little axis direction with 1, is positioned at a main little side with 1 axis along the master is little with the adjacent coupling aperture of 1 axis direction; Along main little being with on 1 axis direction, the hole of adjacent two coupling apertures 3 in the heart apart from main little guide wavelength with 1 central task frequency 23% ~ 27% between.
Because the utility model adopts the design of a plurality of coupling apertures, has the effect that coupling is strengthened between coupling aperture and the coupling aperture, if the permutation and combination between coupling aperture and the coupling aperture can not reach suitable arranging, then can cause many unfavorable factors, weaken phenomenon such as coupling, we arrange to it and have done corresponding research for this reason, for the volume that reduces whole coupling and the effect that reaches the coupling reinforcement, the further improvement of the utility model is: coupling aperture is arranged along the axis of main little band, is positioned at a side of main little zone axis along the adjacent coupling aperture of main little zone axis direction; Along on main little zone axis direction, the hole of adjacent two coupling apertures in the heart apart from the guide wavelength of the central task frequency of main little band 23% ~ 27% between.That is, adjacent coupling aperture is distributed in successively a side of main little zone axis.Adjacent coupling aperture along main little be with a side to distribute after, reinforcement can further be coupled, thereby further improve the directivity that this is positioned at main little porous rectangular waveguide directional coupler with a side, the hole of the adjacent two coupling apertures in the heart influencing factor of distance is determined by the input microwave signal, in addition, because the coupling aperture in the utility model all is positioned at the same side of main little band, therefore be compared to other arrangement mode, its small volume, be arranged in both sides such as coupling aperture, compare with both sides, the design volume of an obvious side is less than the design volume of both sides.
Embodiment one
Shown in Fig. 2,3, present embodiment comprises being provided with main littlely is with 1 and secondary littlely be with 2, mainly littlely is with 1 to be the microwave main channel, secondary littlely is with 2 to be the sampled signal passage; Main littlely be with 1 and secondary littlely be with 2 mutually isolation, be communicated with by 5 coupling apertures 3; The part of 5 coupling apertures 3 littlely is with 1 and secondary little being with beyond 2 main.The axis of described coupling aperture 3 is vertical with main little axis with 1, its cross section be shaped as irregular polygon; Adjacent coupled hole 3 is positioned at a side of main little band, along main little being with on 1 axis direction, the hole of adjacent two coupling apertures 3 in the heart apart from main little guide wavelength with 1 central task frequency 23% ~ 27% between, it is parallel with the axis of coupling aperture 3 and with main little with the vertical cylindrical metal body 4 of 1 axis to have added another axis in each coupling aperture 3, the cross section of this cylindrical metal body 4 be shaped as rectangle.
Embodiment two
As shown in Figure 4, the place different from embodiment one is to have 4 coupling apertures 3 to be positioned at the same side of main little band, the hole in adjacent coupled hole 3 in the heart apart from main little guide wavelength with 1 central task frequency 23% ~ 27% between, its coupling performance is better.4 of each cylindrical metal bodies connect with the inwall of corresponding coupling aperture 3 and are positioned on the different azimuth of coupling aperture 3 in a direction, and its particular location is decided by parameter optimizations such as directivity, bandwidth.
Embodiment three
As shown in Figure 5, the places different from embodiment one are, secondary little two ends with 2 also are connected with crookedly littlely is with 5, also are connected with matching structure with external world's coupling at the little other end with 5 of bending.Can make things convenient for like this being connected of this directional coupler and extraneous device, thereby it is better to obtain directivity, the porous rectangular waveguide directional coupler that bandwidth is wider.
Embodiment four
As shown in Figure 6, the place different from embodiment one be the cross section of coupling aperture 3 for oval, and the cylindrical metal body 4 that shape of cross section is rectangle is not set in the coupling aperture 3.
Embodiment five
As shown in Figure 7, the place different from embodiment four is that the cross section of coupling aperture 3 is rectangle, and all is provided with the cylindrical metal body 4 that shape of cross section is rectangle in the coupling aperture 3.
Embodiment six
As shown in Figure 8, different from embodiment four is that the cross section of coupling aperture 3 is triangle.
Just can realize preferably the utility model as mentioned above.
Claims (7)
1. be positioned at main little porous microstrip directional coupler with a side, it is characterized in that: comprise as the little band of the master of microwave main channel (1) with as secondary little band (2) of sampled signal passage and as the coupling aperture (3) of coupling channel; Main little band (1) is consistent with the structure of secondary little band (2), and wherein main little band (1) and secondary little band (2) all are made of dielectric layer printing upper conductor band (6); Main little band (1) and secondary little band (2) are by mutually isolation of the ground plane (7) between them; Main little band (1) is communicated with secondary little band (2) by at least 3 coupling apertures (3) that are positioned on the ground plane (7), the projection section of at least 1 coupling aperture (3) be positioned at outside the conductor belt projection of the conductor belt projection of leading little band (1) and secondary little band (2) and with lead little band (1) and secondary little band (2) conducting; Described coupling aperture (3) is arranged along the axis of main little band (1), has at least 2 adjacent coupling apertures (3) to be positioned at a side of main little band (1) axis along main little band (1) axis direction; Along on main little band (1) axis direction, the hole of adjacent two coupling apertures (3) in the heart apart from the guide wavelength of the central task frequency of main little band (1) 20% ~ 30% between.
2. according to claim 1 being positioned at led little porous microstrip directional coupler with a side, it is characterized in that: coupling aperture (3) is circle in its projection of shape of overlooking on the direction.
3. according to claim 1 being positioned at led little porous microstrip directional coupler with a side, and it is characterized in that: coupling aperture (3) is triangle in its projection of shape of overlooking on the direction.
4. according to claim 1 being positioned at led little porous microstrip directional coupler with a side, and it is characterized in that: coupling aperture (3) is polygon in its projection of shape of overlooking on the direction.
5. according to claim 1 being positioned at led little porous microstrip directional coupler with a side, and it is characterized in that: the axis of the conductor belt of the little band of described master (1) and secondary little band (2) is parallel to each other.
6. the described little porous microstrip directional coupler with a side of master that is positioned at of any one according to claim 1-5, it is characterized in that: the one or both ends of the little band of described master (1) or secondary little band (2) also are connected with crooked little band (5).
7. the described little porous microstrip directional coupler with a side of master that is positioned at of any one according to claim 1-5, it is characterized in that: the little band of described master (1) Huo and secondary little band (2) are connected with the matching structure with extraneous device matching in its one or both ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220393956 CN202678492U (en) | 2012-08-10 | 2012-08-10 | Multi-hole microtrip directional coupler positioned on one side of main microtrip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220393956 CN202678492U (en) | 2012-08-10 | 2012-08-10 | Multi-hole microtrip directional coupler positioned on one side of main microtrip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202678492U true CN202678492U (en) | 2013-01-16 |
Family
ID=47499372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220393956 Expired - Fee Related CN202678492U (en) | 2012-08-10 | 2012-08-10 | Multi-hole microtrip directional coupler positioned on one side of main microtrip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202678492U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102780059A (en) * | 2012-08-10 | 2012-11-14 | 成都赛纳赛德科技有限公司 | Porous microstrip directional coupler on main microstrip side |
-
2012
- 2012-08-10 CN CN 201220393956 patent/CN202678492U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102780059A (en) * | 2012-08-10 | 2012-11-14 | 成都赛纳赛德科技有限公司 | Porous microstrip directional coupler on main microstrip side |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202678497U (en) | Multi-hole directional coupler with main and auxiliary ridge waveguides different in size | |
| CN202678491U (en) | Multi-hole microtrip directional coupler with coupling holes distributed in staggered manner | |
| CN202678492U (en) | Multi-hole microtrip directional coupler positioned on one side of main microtrip | |
| CN203225326U (en) | Porous directional coupler provided with main rectangular waveguide and auxiliary rectangular waveguide having different sizes | |
| CN102800914B (en) | Porous ridge waveguide directional couplers with different dimensions | |
| CN102780059A (en) | Porous microstrip directional coupler on main microstrip side | |
| CN202749492U (en) | Micro-strip directional coupler | |
| CN202695690U (en) | A multi-hole directional coupler for a rectangular waveguide with coupling holes positioned on one side of a main rectangular waveguide | |
| CN202737080U (en) | Porous ridge waveguide directional coupler located at one side of main ridge waveguide | |
| CN202678489U (en) | Directional coupler with main and auxiliary ridge waveguides different in size | |
| CN202695691U (en) | A multi-hole directional coupler for a rectangular coaxial line with coupling holes distributed in an interlacing manner | |
| CN202737079U (en) | Porous ridge waveguide directional couplers with different dimensions | |
| CN102780056B (en) | Directional coupler with main and auxiliary rectangular coaxial lines | |
| CN202678490U (en) | Multi-hole ridge waveguide directional coupler with coupling holes distributed in staggered manner | |
| CN202839931U (en) | Directional coupler with rectangular coaxial lines | |
| CN202678496U (en) | Multi-hole directional coupler positioned on one side of main rectangular coaxial line | |
| CN202817153U (en) | Multi-hole directional coupler provided with main/auxiliary rectangular coaxial lines of different sizes | |
| CN202695692U (en) | A multi-hole directional coupler for a rectangular waveguide with coupling holes distributed in an interlacing manner | |
| CN202678493U (en) | Size-variable multi-hole rectangular waveguide directional coupler | |
| CN102810710B (en) | Directional coupler with master ridge waveguide and slave ridge waveguide | |
| CN102810707B (en) | Porous ridge waveguide directional coupler with cross distributed coupling holes | |
| CN102780060B (en) | Porous rectangular waveguide directional coupler with different size | |
| CN102790256B (en) | Porous directional coupler with main and assistant ridge waveguides in different sizes | |
| CN102810711B (en) | Rectangular porous waveguide directional coupler with cross distributed coupling holes | |
| CN202678494U (en) | Directional coupler with main and auxiliary rectangular coaxial lines different in size |
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: 20130116 Termination date: 20150810 |
|
| EXPY | Termination of patent right or utility model |