CN207705394U - Feed network for waveguide, waveguide array antenna - Google Patents
Feed network for waveguide, waveguide array antenna Download PDFInfo
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- CN207705394U CN207705394U CN201721772374.0U CN201721772374U CN207705394U CN 207705394 U CN207705394 U CN 207705394U CN 201721772374 U CN201721772374 U CN 201721772374U CN 207705394 U CN207705394 U CN 207705394U
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- waveguide
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Abstract
The utility model discloses a kind of feed network for waveguide, for waveguide array antenna, the feed network for waveguide includes the E T power divider networks made of the one group of faces rectangular waveguide E T-type power splitter cascade, two output ports of the faces each rectangular waveguide E T-type power splitter of the E T power divider network afterbodies are separately connected there are one 90 ° of polarizers, and the structure of the two 90 ° of polarizers is arranged in mirror symmetry.The invention also discloses waveguide array antennas, including antenna radiation unit and feed network for waveguide as described above.Compared with prior art, the utility model can effectively inhibit leakage problem, to reduce the Insertion Loss of entire feeding network, while difficulty of processing be greatly reduced.
Description
Technical field
The utility model is related to a kind of feed network for waveguide, are used for waveguide array antenna.
Background technology
Modern communication technology develops rapidly, and requirement of the communication system to antenna develops to miniaturization, high efficiency direction.Waveguide
Flat plate array antenna is small, efficient, low section and light-weight feature, meets very much modern communication technology developing direction.
Waveguide flat array antenna includes antenna radiation unit and feed network for waveguide.
Feed network for waveguide is the important component of waveguide flat array antenna, its key index be amplitude distribution and
Phase distribution.When ensureing antenna side lobe minimum, amplitude meets Taylor's distribution；When ensureing antenna gain maximum, amplitude meets flat
It is distributed.Either any amplitude distribution, it is necessary to assure equiphase is distributed, that is, is fed to the waveguide mouth of each radiating element
Signal all must be equiphase.
Currently used feed network for waveguide is all rectangular waveguide HT power divider network structures, by one group of face rectangular waveguide H
T-type power splitter (abbreviation HT power splitters) cascades.By rectangular waveguide HT architectural characteristics it is found that in the case of symmetrical configuration HT
Power splitter can ensure that the phase of all ports is equal, and amplitude can be controlled by the position of separated place diaphragm, theoretically very
The work(of good realization feeding network is intrinsic.But in actual processing assembling process, HT power splitters can only be cut from narrow side subdivision
It cuts, since planar slot antenna can only place trip bolt in the surrounding of antenna, centre, which is entirely radiating element, cannot place peace
Cartridge screw, the faces narrow side H will certainly exist leakage due to the flatness of processing is not good etc. enough.The leakage meeting in these gaps
The performance of severe exacerbation antenna reduces gain and the radiation efficiency of antenna.It is especially the hot spot frequency of current Communication Studies in high frequency
Rate E-band is showed especially serious, or even causes antenna that cannot work.In order to solve the leakage problem of HT feed network for waveguide,
The method of longest is silver-plated welding at present, but the tin sweat(ing) of silver-plated welding is easy to spill in waveguide cavity, deteriorates echo, and
Without maintenanceability.Gap waves companies of Sweden propose to inhibit the periodic structure of leakage, be placed on the both sides of waveguide channels all
Phase is distributed, and the acicular texture of height substantially operation wavelength 1/4 inhibits the leakage in the faces H gap, which, which can solve, lets out
Leakage problem, substantially increases the performance of antenna, but the fine needle of the structure is difficult processing and is easy to damage, increase antenna at
This, and it is unfavorable for the mass production of antenna.
Utility model content
The technical problem to be solved by the utility model is to overcome the shortage of prior art, a kind of waveguide feed net is provided
Network can effectively inhibit leakage problem, to reduce the Insertion Loss of entire feeding network, while difficulty of processing be greatly reduced.
The utility model specifically uses following technical scheme to solve above-mentioned technical problem：
A kind of feed network for waveguide is used for waveguide array antenna, and the feed network for waveguide includes by one group of rectangular waveguide E
E-T power divider networks made of the T-type power splitter cascade of face, the faces each rectangular waveguide E of the E-T power divider networks afterbody
Two output ports of T-type power splitter are separately connected there are one 90 ° of polarizers, and the structure of the two 90 ° of polarizers is in mirror image pair
Claim setting.
Preferably, 90 ° of polarizers include input rectangular waveguide, output rectangular waveguide, and the faces input rectangular waveguide E are hung down
The facets such as straight and the perpendicular bisected face in the faces output rectangular waveguide H are coplanar；Input rectangular waveguide pass sequentially through a step structure and
One butterfly structure is connect with output rectangular waveguide；The step structure is for matching echo；The butterfly structure is for reversing
Electromagnetic waveguide polarization direction, the cuboid waveguide for being mutually perpendicular to and being partially overlapped by two form, the height of the butterfly structure
Substantially 1/4 of wavelength corresponding to working frequency, the bottom surface of butterfly structure and the perpendicular bisected face weight in the faces input rectangular waveguide E
It closes.
Preferably, the faces rectangular waveguide E T-type power splitter along two component combinations that the faces E subdivision is opened by forming.
Further, the faces rectangular waveguide E T-type power splitter is by two component combinations being opened along the faces E center line subdivision
It forms.
Following technical scheme can also be obtained according to identical utility model thinking：
A kind of waveguide array antenna, including feed network for waveguide described in antenna radiation unit and any technical solution as above.
Compared with prior art, technical solutions of the utility model have the advantages that：
The utility model creatively proposes the waveguide feed net using E-T power divider networks structure waveguide array antenna
Network, and structure is separately connected in mirror symmetry setting by two output ports of each E-T power splitters to afterbody
90 ° of polarizers, to solve the problems, such as phase equalization.Due to being from the faces broadside E subdivision, by square in E-T power splitter process
The characteristic of shape waveguide is it is found that along the gap of broadside center line subdivision due to not cutting off electric current, the problem of there is no leakages, can be with
The leakage problem of effective solution feeding network.The especially high-frequency band as similar E-band, can effectively inhibit to feed
The leakage problem of network reduces the Insertion Loss of entire feeding network, while can effectively reduce wanting for feeding network processing flatness
It asks, reduces difficulty of processing.
Description of the drawings
Fig. 1 is the structural schematic diagram of existing four ports E-T power divider networks；
Fig. 2 is each port phase distributed simulation figure of four port E-T power divider networks shown in Fig. 1；
Fig. 3 is the structural schematic diagram of the utility model feed network for waveguide specific embodiment one；
Fig. 4 is 90 ° of polarizer structural schematic diagrams in specific embodiment one；
Fig. 5 is each port phase distributed simulation figure of specific embodiment one；
Fig. 6 is the structural schematic diagram of the utility model feed network for waveguide specific embodiment two；
Fig. 7 is the overall structure diagram of 90 ° of polarizers in specific embodiment two；
Fig. 8 is structural schematic diagram of 90 ° of polarizers from an angle in specific embodiment two；
Structural schematic diagram of 90 ° of polarizers from another angle in Fig. 9 specific embodiments two；
Figure 10 is each port phase distributed simulation figure of specific embodiment two.
It is marked comprising the following drawings in figure：
1, public port, 2~5, output port, 6 ,+90 degree polarizers, 7, -90 degree polarizers, 8, input rectangular waveguide,
9, rectangular waveguide is exported, 10, step structure, 11, butterfly structure, 12, butterfly structure bottom.
Specific implementation mode
In order to solve the leakage problem of existing rectangular waveguide H-T power divider networks structure feeding network, the utility model
Thinking is to build feeding network using E-T power divider networks.The faces rectangular waveguide E T-type structure power splitter can be from broadside subdivision, very
The good leakage problem for solving feeding network, but E-T structure power splitters are the two paths of signals that signal is divided into opposite in phase
(two output port phases differ 180 degree), Fig. 1 show that the E-T power divider networks of four ports, Fig. 2 are the E-T work(point
Four port phase distributed simulation figures of device network, phase differs 180 degree between output port as shown in Figure 2, cannot meet each
The consistent requirement of port requirements phase.Therefore, E-T power divider networks, which are never fed in existing waveguide Slot-array antennas, is
It is used in system.In order to build the feed network for waveguide of waveguide array antenna using E-T power divider networks, the utility model passes through
90 ° of polarizers of mirror symmetry setting are separately connected to two output ports of each E-T power splitters of afterbody, to solve
The problem of phase equalization.
Specifically, the utility model feed network for waveguide includes being cascaded by the one group of faces rectangular waveguide E T-type power splitter
E-T power divider networks, two of the faces each rectangular waveguide E T-type power splitter of E-T power divider networks afterbody outputs
Port is separately connected there are one 90 ° of polarizers, and the structure of the two 90 ° of polarizers is arranged in mirror symmetry.
For the faces each rectangular waveguide E T-type power splitter of afterbody, two output port signal phase difference
It 180 °, in order to enable its phase is consistent, needs into horizontal phasing control, the utility model is arranged using two mirror symmetries
90 ° of polarizers come respectively that the output signal to two ports is into horizontal phasing control, since two 90 ° of polarizer structures are in mirror image pair
Claim setting, it is+90 ° of polarizers to be equivalent to one, the other is -90 ° of polarizers, either E-T power splitters phase in advance with+
The port of 90 ° of polarizer connections or delayed phase is connect with+90 ° of polarizers, and final result is all two port output letters
Number phase is consistent.Due to be in E-T power splitter process from the faces broadside E subdivision, by the characteristic of rectangular waveguide it is found that
It, can be with effective solution transmission network there is no leaking along the gap of broadside center line subdivision due to not cutting off electric current
The leakage problem of network.The especially high-frequency band as similar E-band, can effectively inhibit the leakage problem of feeding network, drop
The Insertion Loss of low entire feeding network, while the requirement of feeding network processing flatness can be effectively reduced, reduce difficulty of processing.
For the ease of public understanding, with two specific embodiments and carry out the technical side to the utility model in conjunction with attached drawing below
Case is described in detail：
Embodiment one,
In actual use, the port number of feeding network generally all follows 2n, therefore actual feeding network all may be used
To illustrate that therefore, the present embodiment is illustrated by taking the simplest four ports feeding network of Ku wave bands as an example by four port networks.
Fig. 3 shows the basic structure of the four ports feeding network, as shown in the figure comprising the E-T work(of four ports
Four polarizers for dividing device network and being connected to four ports.In figure, 1 is public port, and 2,3,4,5 be feeding network respectively
Four output ports, output port 2,5 corresponds to two output ports of the same afterbody E-T power splitters respectively, exports
Port 3,4 corresponds to two output ports with another afterbody E-T power splitters respectively.As shown in figure 3, output port 4,5
It is connect respectively there are one 90 ° of polarizers 7, output port 2,3 connects that there are one 90 ° of polarizers, 7,90 ° of polarizers 6 and 90 ° of polarization respectively
Device 7 is the polarizer structure of complete mirror image, therefore size is completely the same.The structure of 90 ° of polarizers is as shown in figure 4, due to it
For the prior art, therefore content no longer is explained in detail to it and is described further.Each port phase of the four ports feeding network responds
As shown in figure 5, can be seen that according to Fig. 5, the phase of each port output signal is consistent.Due to wherein using E-T power splitters
Network along the broadside subdivision of waveguide is then two parts are composed (preferably along the faces E center line subdivision) in actual processing, because
The section gap in this most region can effectively avoid the generation of leakage all in the faces E.
Embodiment two,
The present embodiment illustrates still by taking four port feeding networks as an example.Fig. 6 shows the four ports feeding network
Basic structure comprising the E-T power divider networks of four ports and four polarizers for being connected to four ports.In figure,
1 is public port, and 2,3,4,5 be four output ports of feeding network respectively, and output port 2,3 corresponds to same last respectively
Two output ports of level-one E-T power splitters, output port 4,5 are corresponded to the two of another afterbody E-T power splitters respectively
A output port.As shown in fig. 6, output port 3,5 is connect respectively there are one 90 ° of polarizers 7, output port 2,4 is connected to one respectively
7,90 ° of polarizers 6 of a 90 ° of polarizers and 90 ° of polarizers 7 are the polarizer structures of complete mirror image, therefore size is completely the same.
As shown in fig. 7~fig. 9, polarizer and waveguide turning structure are integrated for the structure of 90 ° of polarizers in the present embodiment
For an entirety.As shown in fig. 7~fig. 9, which includes input rectangular waveguide 8, exports rectangular waveguide 9, respectively as
The input port and output port of 90 ° of polarizers, input rectangular waveguide 8 are connected with the output port of E-T power splitters；Output
Rectangular waveguide 9 is connected with the radiating element of antenna, on feed to the radiating element of antenna.Input hanging down for the faces E of rectangular waveguide 8
The facets such as straight and the perpendicular bisected face in the faces H of output rectangular waveguide 9 are coplanar；Input rectangular waveguide 8 passes sequentially through a Step-edge Junction
Structure 10 and a butterfly structure 11 are connect with output rectangular waveguide 9；The step structure 10 is for matching echo；The butterfly knot
Structure 11 is for reversing electromagnetic waveguide polarization direction, and the cuboid waveguide for being mutually perpendicular to and being partially overlapped by two forms, the butterfly
The 1/4 of wavelength corresponding to the height of shape structure 11 substantially working frequency, the E of butterfly structure bottom surface 12 and input rectangular waveguide 8
The perpendicular bisected face in face overlaps, and when making processes along the faces E center line subdivision, then does not cut off waveguide surface electric current, polarizer is not present
Leakage.
Each port phase response of the four ports feeding network is as shown in Figure 10, can be seen that according to Figure 10, each port output
The phase of signal is consistent.Due to wherein using E-T power divider networks, it is along the broadside subdivision of waveguide in actual processing
Then two parts are composed, therefore the section gap in most region is all in the faces E, thus can effectively avoid the production of leakage
It is raw.
It these are only two specific embodiments, it is actually various existing or have 90 ° of polarizers are used equally for this practicality
New technique scheme, to realize above-mentioned technique effect.
Since the utility model feed network for waveguide effectively inhibits leakage problem, inserting for entire feeding network is reduced
Damage, and the processing difficulty of feeding network is reduced, waveguide array antenna is used it for, antenna on the one hand can be effectively improved
On the other hand performance can reduce the cost of implementation of entire antenna system.
Claims (5)
1. a kind of feed network for waveguide is used for waveguide array antenna, which is characterized in that the feed network for waveguide includes by one group
E-T power divider networks made of the T-type power splitter cascade of the faces rectangular waveguide E, each square of the E-T power divider networks afterbody
Two output ports of shape waveguide E face T-type power splitter are separately connected there are one 90 ° of polarizers, the structure of the two 90 ° of polarizers
It is arranged in mirror symmetry.
2. feed network for waveguide as described in claim 1, which is characterized in that 90 ° of polarizers include input rectangular waveguide, defeated
Go out rectangular waveguide, the perpendicular bisected face and the perpendicular bisected face in the faces output rectangular waveguide H in the faces input rectangular waveguide E are coplanar；Input
Rectangular waveguide passes sequentially through a step structure and a butterfly structure and is connect with output rectangular waveguide；The step structure is used for
Match echo；The butterfly structure is for reversing electromagnetic waveguide polarization direction, the length for being mutually perpendicular to and being partially overlapped by two
Cube waveguide forms, 1/4 of wavelength corresponding to the height substantially working frequency of the butterfly structure, the bottom surface of butterfly structure with it is defeated
The perpendicular bisected face for entering the faces rectangular waveguide E overlaps.
3. feed network for waveguide as claimed in claim 1 or 2, which is characterized in that the faces rectangular waveguide E T-type power splitter is by along E
Two component combinations that face subdivision is opened form.
4. feed network for waveguide as claimed in claim 3, which is characterized in that the faces rectangular waveguide E T-type power splitter is by along the faces E
Two component combinations that center line subdivision is opened form.
5. a kind of waveguide array antenna, which is characterized in that including antenna radiation unit and as described in any one of Claims 1 to 4
Feed network for waveguide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721772374.0U CN207705394U (en) | 2017-12-18 | 2017-12-18 | Feed network for waveguide, waveguide array antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721772374.0U CN207705394U (en) | 2017-12-18 | 2017-12-18 | Feed network for waveguide, waveguide array antenna |
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| Publication Number | Publication Date |
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| CN207705394U true CN207705394U (en) | 2018-08-07 |
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| CN201721772374.0U Active CN207705394U (en) | 2017-12-18 | 2017-12-18 | Feed network for waveguide, waveguide array antenna |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108110436A (en) * | 2017-12-18 | 2018-06-01 | 江苏贝孚德通讯科技股份有限公司 | Feed network for waveguide, waveguide array antenna |
| CN112332113A (en) * | 2020-11-03 | 2021-02-05 | 北京交通大学 | Broadband high-gain air waveguide array antenna |
-
2017
- 2017-12-18 CN CN201721772374.0U patent/CN207705394U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108110436A (en) * | 2017-12-18 | 2018-06-01 | 江苏贝孚德通讯科技股份有限公司 | Feed network for waveguide, waveguide array antenna |
| CN108110436B (en) * | 2017-12-18 | 2024-02-06 | 江苏贝孚德通讯科技股份有限公司 | Waveguide feed network and waveguide array antenna |
| CN112332113A (en) * | 2020-11-03 | 2021-02-05 | 北京交通大学 | Broadband high-gain air waveguide array antenna |
| CN112332113B (en) * | 2020-11-03 | 2021-06-04 | 北京交通大学 | Broadband high-gain air waveguide array antenna |
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