CN203071208U - Miniature five-port power-dividing network - Google Patents
Miniature five-port power-dividing network Download PDFInfo
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- CN203071208U CN203071208U CN 201320054944 CN201320054944U CN203071208U CN 203071208 U CN203071208 U CN 203071208U CN 201320054944 CN201320054944 CN 201320054944 CN 201320054944 U CN201320054944 U CN 201320054944U CN 203071208 U CN203071208 U CN 203071208U
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Abstract
The utility model discloses a miniature five-port power-dividing network, which comprises a coupler, an input port, an isolation port B, an isolation port C, an output port A and an output port B. According to the technical scheme of the utility model, the equal-amplitude and equal-phase power divider can cover the full bandwidth of waveguide. When multiple power dividers are connected in series to form a large-scale network, the main structures thereof can be classified into a symmetric type and an asymmetric type. When the symmetric structure is adopted, the major characteristic of the formed equal-amplitude equal-phase power divider is that theoretical phase difference and amplitude difference between two output ends are zero and the phase difference is far less than the phase difference of a common H-surface waveguide slot bridge.
Description
Technical field
The utility model relates to a kind of power splitter, specifically, relates to a kind of broadband five-port power splitter.
Background technology
Power splitter is a kind of general original paper in modern microwave communication and Military Electronics system.Waveguide power divider, due to characteristics such as its power capacity are high, insertion loss is low, is applied very extensive.Two road waveguide power dividers both can be used separately, also can form the multichannel power division network by serial connection, for fields such as phased array radar, antenna array and power are synthetic.Existing two road waveguide power dividers mainly comprise the T-shaped branch of E-face, the T-shaped branch of H-face, waveguide evil spirit T, H-face kinds of Slot Coupled Waveguide Hybrids etc.Wherein the first two device is because isolation between two outputs is low, and the mismatch of any one output port all can have a strong impact on amplitude and the phase accuracy of power division.Between the output port of waveguide evil spirit T, good isolation is arranged, and the phase place between two output ports is identical, but the axis direction of its four waveguides points to respectively three mutually perpendicular directions, become complicated 3-D solid structure, difficult processing, cost is high, and device is all larger aspect length and width Senior Three, is unfavorable for the miniaturization of device.Particularly waveguide evil spirit T is not suitable as unit serial connection formation multichannel power division network.The axis of the input and output waveguide of H-face kinds of Slot Coupled Waveguide Hybrids is positioned at same plane, can be connected in series thus all waveguide axis of formation and be positioned at conplane multichannel power division network.This power division network can be divided into base and cover plate, utilizes respectively traditional digital control milling technology disposable and convenient ground processing, and machining accuracy improves greatly, and processing cost reduces greatly.But, have 90 intrinsic degree phase differences between two output ports of existing H-face kinds of Slot Coupled Waveguide Hybrids.In the situation that require same-phase output, particularly when serial connection forms the multichannel power division network, need to be to carrying out broadband compensation between the phase place of power splitter output ports at different levels.Particularly, when multichannel power division network Miniaturization Design, phase compensating circuit can make device volume and design difficulty greatly improve.
The utility model content
The purpose of this utility model is to provide a kind of broadband miniaturization five-port power division network.
To achieve these goals, the technical solution adopted in the utility model is as follows: miniaturization five-port power division network, comprise coupling cavity, and also comprise the input port, isolated port A, isolated port B, output port A and the output port B that are communicated with coupling cavity.
Coupling cavity is on horizontal plane
be projected inthe size of a direction is less than or equal to free space wavelength corresponding to the maximum operating frequency of this miniaturization five-port power division network
3/4ths, output port A and the projection of output port B on horizontal plane be the left side of the projection on horizontal plane and the right at input respectively; Isolated port A, the isolated port B projection on horizontal plane is the left side of the projection on horizontal plane and the right at input respectively, and the line direction of input port, isolated port A, isolated port B, output port A and output port B and the angle between horizontal plane are less than 30 degree.
Above-mentioned horizontal plane refers to the upper bottom surface of coupling cavity or is parallel to the horizontal plane of coupling cavity upper bottom surface; Vertical direction refers to the direction perpendicular to horizontal plane.A direction refers to perpendicular to the direction of horizontal plane or perpendicular to the input normal direction and be parallel to the direction of horizontal plane.
Isolated port A is between output port A and input port, and isolated port B is between output port B and input port, and output port A is adjacent with output port B; Coupling cavity inwall between output port A and output port B is provided with protrusion direction and points to the matching body in coupling cavity.
Described coupling cavity is the simply connected cavity structure, and any closed curve of this coupling cavity inside can converge to continuously a point in this coupling cavity.The simply connected cavity structure is simply connected region, and simply connected region is one of basic conception of mathematics.If D is plane domain, if the part that in D, arbitrary closed curve is enclosed all belongs to D, claim that D is the plane simply connected region.Coupling cavity is the cavity that the plane simply connected region forms.
Described input port, output port A, output port A, isolated port A, isolated port B are empty waveguide or ridge waveguide or band line or coaxial configuration.
Left inside wall and right inside wall at described coupling cavity are provided with boss A or depression A, and the protrusion direction of boss A is pointed to coupling cavity inside, the opening direction sensing coupling cavity inside of depression A; Described coupling cavity is the left-right symmetric shape, and the boss A of the left inside wall of coupling cavity and right inside wall setting or depression A arrange with respect to the coupling cavity left-right symmetric.
On described coupling cavity inwall or and lower inwall be provided with the coupling body that at least one regulates coupling use, upper inwall and lower inwall are coupling cavity two opposites in opposition to each other; Coupling body is groove B or boss B; The opening direction of described groove B points to coupling cavity inside, and the protrusion direction of described boss B is pointed to coupling cavity inside.
The upper inwall of isolated port B, isolated port C or and lower inwall be provided with the metallic object that at least one regulates coupling use.
In coupling cavity and input
relativelythe coupling cavity inwall on be provided with matching body, matching body only in upper end or/and lower end or/and side with the coupling cavity inwall, be connected, the upper inwall of isolated port B, isolated port C or and lower inwall be provided with at least one metallic object.
The cross section of the cross section of the cross section of described input port, the cross section of isolated port A, isolated port B, the cross section of output port A, output port B is rectangle.
Input port is the left-right symmetric shape, the front and back of described input port to before and after axis and coupling cavity to dead in line; Isolated port A and isolated port B arrange with respect to the normal left-right symmetric of input port, and output port A and output port B arrange with respect to input port normal left-right symmetric; Coupling cavity be take the front and back of input port and is the left-right symmetric structure to axis as symmetry axis.
Described coupling cavity, input port, output port A, output port B, isolated port A, isolated port B, matching body, metallic object, boss A, depression A, groove B and metal boss B are left and right mirror image symmetry arrangement with respect to the normal direction of input
The upper surface of the upper surface of the upper surface of described input port, the upper surface of isolated port A, isolated port B and the upper surface of output port A, output port B all with the upper surface flush of coupling cavity.
During specific implementation, the miniaturization five-port power division network of the utility model design, comprise coupling cavity, the input port be communicated with coupling cavity, isolated port A, isolated port B and output port A, output port B; Described input port is positioned at the front end face of coupling cavity, output port A is positioned at rear end face or the left side of coupling cavity, output port B is positioned at rear end face or the right side of coupling cavity, isolated port B is positioned at front end face or the left side of coupling cavity, isolated port C is positioned at front end face or the right side of coupling cavity, front end face and rear end face are coupling cavity two opposites in opposition to each other, and left side and right side also are coupling cavity two opposites in opposition to each other.Left inside wall and right inside wall at described coupling cavity are provided with boss A or groove A, and the protrusion direction of boss A is pointed to coupling cavity inside, the opening direction sensing coupling cavity inside of groove A.
Described boss A or groove A are left-right symmetric with respect to the normal of input port and arrange.
The rear end face of described coupling cavity is provided with one and regulates the matching body that impedance matching is used, and the shape of matching body can be shape arbitrarily.The general projection of shape of matching body in the coupling cavity upper surface is triangle or rectangle.
Described isolated port B and isolated port C are provided with at least one zygosome of regulating coupling use, and coupling body is metallic object, and the metallic object protrusion direction is pointed to the inside of isolated port.
In order to facilitate processing, preferentially the cross section of the cross section of the cross section of the cross section of the cross section of described input port, isolated port A, isolated port B, output port A, output port B is designed to rectangle.
Be provided with changeover portion on input port, isolated port A, isolated port B, output port A, output port B.
In order to facilitate designing and calculating, coupling cavity be take the cuboid structure as good, and the cross section of the cross section of the cross section of input port, the cross section of isolated port A, isolated port B, the cross section of output port A, output port B all be take rectangle as good.
For given design objective, comprise reflection coefficient, isolation, total insertion loss etc., in order to obtain wider bandwidth of operation, the width of coupling cavity can change according to certain rule to axis along the front and back of input port, left inside wall and the right inside wall at described coupling cavity is provided with boss A or depression A, and the protrusion direction of boss A is pointed to coupling cavity inside, the opening direction sensing coupling cavity inside of depression A, state boss A or depression A arranges with respect to the coupling cavity left-right symmetric.Setting can obtain wider bandwidth of operation like this.
For the further bandwidth of operation of this miniaturization five-port power division network of broadening, coupling cavity inside is provided with one or more groove B or boss B, and all groove B and boss B become left-right symmetric to distribute with the front and back of input port to axis.
Coupling for each port of improving this miniaturization five-port power division network, be provided with changeover portion on input port, isolated port A, isolated port B and output port A, output port B.The width of changeover portion for change, also can be changeless for width.
For the ease of adopting common milling processing, all structures, the upper surface that comprises coupling cavity and described input/output port is positioned at same plane, the upper surface of the upper surface of the upper surface of described input port, isolated port A, isolated port B and every the upper surface of the upper surface of output port A, output port B all with the upper surface flush of coupling cavity.
The utility model can adopt unsymmetric structure, also can adopt symmetrical structure.The maximum characteristics of the phase power splitters such as constant amplitude that form while adopting symmetrical structure are that the poor and amplitude difference of two notional phases between output is zero, be far smaller than the phase difference of the H-face kinds of Slot Coupled Waveguide Hybrids generally adopted, the phase difference between output port A, output port B is far smaller than the phase difference of the H-face kinds of Slot Coupled Waveguide Hybrids generally adopted.During dissymmetrical structure, notional phase is poor can be less than 90 degree phase differences of H-face kinds of Slot Coupled Waveguide Hybrids, make phase compensation easily, bandwidth is wider.The T-shaped knot that the isolation of two output ports is far superior to generally adopt, Y type knot power splitter.Due to locational notable difference between two output ports of H-face kinds of Slot Coupled Waveguide Hybrids and input, the phase difference of two output in whole working band all in 90 degree left and right.In waveguide power divider, we usually need phase difference between two outputs of power splitter to be less than certain value in whole working band, such as 3 degree or 5 degree.In order to meet this equiphase requirement, the most frequently used method is two outputs connection waveguide phase compensating circuits at H-face kinds of Slot Coupled Waveguide Hybrids.There is the narrow problem with increasing the power splitter volume of bandwidth of operation in this compensating circuit.Particularly, when adopting multistage H-face kinds of Slot Coupled Waveguide Hybrids to form the multichannel power division network, the problems referred to above are more serious.The almost not isolation of the T-shaped knot adopted, Y type knot power splitter two output ports, thus can between the amount of causing output port, influence each other.Power splitter of the present utility model, output port A, output port B are good with respect to the input port symmetry, have guaranteed that power and the phase place of output port A, output port B is identical.Again due to the existence of isolated port A and isolated port B, thereby guaranteed that the isolation of two output ports is very high.Therefore, output port A, the output port B phase place of the miniaturization five-port power division network that the utility model provides can be accomplished identical, between output port A, output port B, have 20dB with good isolation, can be used as single power splitter and use, particularly can be connected in series and form the use of multichannel power division network.Device has clear superiority aspect performance, bandwidth of operation and volume.
Operation principle of the present utility model can in the situation that symmetric form rectangular coupled cavity and rectangle input and output waveguide be summarized as follows.The input port that cross section is rectangle has mainly encouraged two waveguide mode of operations, i.e. TE10 pattern and TE30 pattern in the coupling cavity of cuboid structure.The ripple of these two patterns all will be propagated along the input waveguide axis direction.Due to the guide wavelength difference of these two patterns, at the other end of coupling cavity, the power that output port A and output port B are coupled out from coupling cavity be the power that is coupled out from the ripple of two mode of operation TE10 patterns and TE30 pattern respectively and.By width and the length of choosing coupling cavity, and size and the position of input port, isolated port B, isolated port C and output port A, output port B, can make output port A and the reflection of output port B place very little.At this moment, all energy are all exported from output port A and output port B coupling basically.Because meeting at isolated port A, isolated port B place naturally with TE30, two mode of operation TE10 patterns of input port excitation anti-phasely disappear mutually, the power be coupled out from isolated port A, isolated port B is all very little, thereby isolated port A, isolated port B are used as isolation end.In order further to widen the bandwidth of operation of device, the shape of coupling cavity, particularly width can suitably change to axis along the front and back of input port, can also in coupling cavity, increase depression A or boss A(metal column).Each input/output terminal can increase one or more levels matching section.Coupling cavity and input port, isolated port A, isolated port B and output port A, output port B are shaped as other when distortion, and the operation principle of this miniaturization five-port power division network also can be set forth and understand according to above content.
The power output of two output ports of the present utility model and phase place are identical in wider working band, can be used as the good waveguide power divider of amplitude-phase consistency, are particularly suitable for serial connection and form the multichannel power division network.That the utility model also has is simple in structure, volume is little, the characteristics that difficulty of processing is low.The utility model can be widely used in that antenna array, phased array radar and power are synthetic, missile guidance, military affairs and the civil area such as communicate by letter.
The accompanying drawing explanation
Fig. 1 is vertical view of the present utility model.
The vertical view that Fig. 2 is embodiment 1.
The result of calculation curve that Fig. 3 is embodiment 1.
The vertical view that Fig. 4 is embodiment 2.
The corresponding title of attached number in the figure: 1-input port; 2-isolated port A; 4-isolated port B, 3-output port A, 5-output port B, 6-coupling cavity, 7-matching body, 8-metallic object, 10-changeover portion, 91-boss A; The 92-A that caves in, 11-boss B, 12-groove B.
In figure ↓ arrow mean the place ahead to, ↑ arrow mean rear to, ← arrow mean left to, → arrow means right.Front and back refer to by the place ahead to the axle straight line that refers to backward directions to axis.
Embodiment
As shown in Figure 2, five-port H type H face power splitter, comprise coupling cavity 6,1 input port 1, output port A3, output port B5, isolated port A2 and isolated port B4, coupling cavity 6 size of a direction on horizontal plane is less than or equal to half of free space wavelength corresponding to the maximum operating frequency of this five-port H type H face power splitter, and output port A3 and the projection of output port B5 on horizontal plane be the left side of the projection on horizontal plane and the right at input respectively; Isolated port A2, the isolated port B4 projection on horizontal plane is the left side of the projection on horizontal plane and the right at input respectively, and the line direction of input port 1, isolated port A2, isolated port B4, output port A3 and output port B5 and the angle between horizontal plane are less than 30 degree.
Concrete five-port H type H face power splitter, comprise coupling cavity 6,1 input port 1, output port A3, output port B5, isolated port A2 and isolated port B4, coupling cavity 6 size of a direction on horizontal plane is less than or equal to half of free space wavelength corresponding to the maximum operating frequency of this five-port H type H face power splitter, input port 1, in output port A3, output port B5, isolated port A2 and isolated port B4, at least 3 port center electric field vertical components are greater than horizontal component.
Described input port 1 is positioned at the front end face of coupling cavity 6, output port A3, output port B5 are positioned at the rear end face of coupling cavity 6, front end face and rear end face are coupling cavity 6 two opposites in opposition to each other, isolated port A2 and isolated port B4 lay respectively at the both sides of input port 1, and output port A3, output port B5 lay respectively at the both sides of coupling cavity 6 axis.Be provided with changeover portion 10 on input port 1, isolated port A2, isolated port B4 and output port A3, output port B5.
This miniaturization five-port power division network is the left-right symmetric structure with respect to the normal of input port 1.
The basic configuration of coupling cavity 6 is the cuboid structure, the cross section of the cross section of input port 1, the cross section of isolated port A2, isolated port B4, the cross section of output port A3, output port A3, the cross section of cross section output port B5 be rectangle.
The width of coupling cavity 6 has 2 variations along the axis of input 1.Left inside wall and the right inside wall at described coupling cavity 6 is provided with boss A91, and the protrusion direction of boss A91 is pointed to coupling cavity 6 inside.Described boss A91 with respect to the front and back of coupling cavity 6 to the axis symmetry arrangement.
The upper surface of all structures of this miniaturization five-port power division network is positioned at same plane, the upper surface of the upper surface of the upper surface of the upper surface of the upper surface of described input port 1, isolated port A2, isolated port B4 and output port A3, output port B5 all with the upper surface flush of coupling cavity 6.
As shown in Figure 3, wherein the S11 in Fig. 3 means the reflection coefficient of input port 1, S21 means the transmission coefficient of input port 1 to isolated port A2, S21 means the transmission coefficient of input port 1 to isolated port B4, S31 is expressed as the transmission coefficient of input port 1 to output port A3, S51 is expressed as the transmission coefficient of input port 1 to output port B5, and S53 means the isolating coefficient of output port B5 and output port A3.
The S parameter of this five-port H type H face power splitter obtained according to the Structure Calculation of embodiment 1 therefrom can be found out, 6.57, arrive in the bandwidth of operation of 10GHz, the reflection coefficient of input port 1 is better than 14dB, and the isolation between output port A3 and output port B5 is all higher than 13dB.The transmission coefficient of isolated port A2 and isolated port B4 is all lower than 13dB, and the S parameter of output port A3 is higher than-3.6dB.Consider that this power splitter is the left-right symmetric structure, the S parameter of other port easily obtains.Therefore, this embodiment provides one to cover the waveguide full bandwidth, and Insertion Loss is lower than 0.6dB, and isolation is better than the constant amplitude homophase waveguide power divider of 13dB.Its performance all is better than traditional power splitter.
As Fig. 4. with the difference of embodiment 1, only be, output port A3, isolated port A2 and output port B5, isolated port B4 lay respectively at left side and the right side of coupling cavity 6, be provided with matching body on coupling cavity 6 inwalls with respect to input 1 in coupling cavity 6, matching body is a cuboid.
Above are only for example.In actual production, the side of coupling cavity 6 can be both one or more straightway, can be also smooth curve, formed and overlooked the rectangle of direction, the pattern that trapezoidal or other are more complicated.Each input/output port can be both simple rectangular waveguide, other shapes of various shapes that also can axis bending.
Can realize the utility model based on said structure
.
Claims (10)
1. miniaturization five-port power division network, comprise coupling cavity (6), it is characterized in that, also comprises the input port (1), the isolated port A(2 that are communicated with coupling cavity (6)), isolated port B(4), output port A(3) and output port B(5).
2. miniaturization five-port power division network according to claim 1, is characterized in that, coupling cavity (6) is on horizontal plane
be projected inthe size of a direction is less than or equal to free space wavelength corresponding to the maximum operating frequency of this miniaturization five-port power division network
3/4ths, output port A(3) and output port B(5) projection on the horizontal plane left side of the projection on horizontal plane and the right at input respectively; Isolated port A(2), isolated port B(4) projection on the horizontal plane left side of the projection on horizontal plane and the right at input respectively, input port (1), isolated port A(2), isolated port B(4), output port A(3) and output port B(5) the line direction and the angle between horizontal plane be less than 30 degree.
3. miniaturization five-port power division network according to claim 2, is characterized in that, described coupling cavity (6) is the simply connected cavity structure, and the inner any closed curve of this coupling cavity (6) can converge to continuously a point in this coupling cavity (6).
4. miniaturization five-port power division network according to claim 2, it is characterized in that, left inside wall and right inside wall at described coupling cavity (6) are provided with boss A(91) or depression A(92), and the protrusion direction of boss (91) is pointed to coupling cavity (6) inside, depression A(92) opening direction points to coupling cavity (6) inside.
5. miniaturization five-port power division network according to claim 2, it is characterized in that, the upper inwall of described coupling cavity (6) or and lower inwall be provided with the coupling body that at least one regulates coupling use, upper inwall and lower inwall are coupling cavity (6) two opposites in opposition to each other; Coupling body is groove B(12) or metal boss B(11); Described groove B(12) opening direction points to coupling cavity (6) inside, described metal boss B(11) protrusion direction point to coupling cavity (6) inside.
6. miniaturization five-port power division network according to claim 5, is characterized in that, in coupling cavity (6) with input (1)
relativelycoupling cavity (6) inwall on be provided with matching body (7), matching body (7) only in upper end or/and lower end or/and side with the coupling cavity inwall, be connected, the upper inwall of isolated port B (2), isolated port C (4) or and lower inwall be provided with at least one metallic object (8).
7. according to the described miniaturization five-port of any one power division network in claim 1-6, it is characterized in that described input port (1), output port A(3), output port A(3), isolated port A(2), isolated port B(4) be empty waveguide or ridge waveguide or band line or coaxial configuration.
8. according to the described miniaturization five-port of any one power division network in claim 1-6, it is characterized in that cross section, the isolated port A(2 of described input port (1)) cross section, isolated port B(4) cross section, output port A(3) cross section, output port B(5) cross section be rectangle.
9. miniaturization five-port power division network according to claim 6, it is characterized in that, described coupling cavity (6), input port (1), output port A(3), output port B(5), isolated port A(2), isolated port B(4), matching body (7), metallic object (8), boss A(91), depression A(92), groove B(12) and metal boss B(11) be left and right mirror image symmetry arrangement with respect to the normal direction of input.
10. according to the described miniaturization five-port of any one power division network in claim 1-6, it is characterized in that upper surface, the isolated port A(2 of described input port (1)) upper surface, isolated port B(4) upper surface and output port A(3) upper surface, output port B(5) upper surface all with the upper surface flush of coupling cavity (6).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107196030A (en) * | 2017-05-25 | 2017-09-22 | 东莞质研工业设计服务有限公司 | A kind of asymmetric 3dB electric bridges |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107196030A (en) * | 2017-05-25 | 2017-09-22 | 东莞质研工业设计服务有限公司 | A kind of asymmetric 3dB electric bridges |
| CN107196030B (en) * | 2017-05-25 | 2018-09-28 | 东莞质研工业设计服务有限公司 | A kind of asymmetric 3dB electric bridges |
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Granted publication date: 20130717 Termination date: 20160131 |
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