CN103956548B - E face channel-splitting filter - Google Patents
E face channel-splitting filter Download PDFInfo
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- CN103956548B CN103956548B CN201410220914.9A CN201410220914A CN103956548B CN 103956548 B CN103956548 B CN 103956548B CN 201410220914 A CN201410220914 A CN 201410220914A CN 103956548 B CN103956548 B CN 103956548B
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- 230000007704 transition Effects 0.000 claims abstract description 38
- 230000005684 electric field Effects 0.000 claims abstract description 5
- 238000012545 processing Methods 0.000 abstract description 7
- 238000004891 communication Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000013461 design Methods 0.000 description 8
- 238000003801 milling Methods 0.000 description 6
- 230000010287 polarization Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000002955 isolation Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The present invention discloses E face channel-splitting filter, comprises public input, directly goes out end, and at least two branched bottoms, and public input is communicated with directly going out to hold by least one adapter cavity, and every bar branched bottom comprises a side and goes out to hold.At least one branched bottom also comprises at least one-level matching transition section, the angle that side goes out the normal direction of end and the normal direction of public input is A, the span of A is: 60 degree of < A < 120 degree, the angle directly going out the normal direction of end and the normal direction of public input is less than 30 degree, have at least the angle of direction at a time and between the normal direction of public input of the electric field of Chu Duan center, a side to be the span of B, B to be: B < 30 degree.The present invention has the features such as simple and compact for structure, manufacturing procedure is few, processing cost is low, and anti-seismic performance is good, is mainly used in various communication system, particularly in satellite communication system.
Description
Technical field
The present invention relates to a kind of channel-splitting filter, specifically, relate to a kind of power-splitting device being mainly used in the multichannel multiband multipolarization of satellite communication.
Background technology
In the middle of electronic equipment and system, power-splitting device is one of indispensable important microwave component.In satellite communication, up-downgoing frequency range is different.In order to overcome the polarization loss that linear polarization mismatch is brought, often need to adopt circularly polarised wave.In order to miniaturization and the weight reduction of system, receiving and transmitting signal is all often use passage.This brings a difficult problem to the antenna feeding network of satellite communication system.Channel-splitting filter needs that the line polarization wave exported from transmitter is converted into circularly polarised wave and exports from its public input port, the circular polarization Received signal strength received from its public input is changed into linear polarization signal and enters receiver, will ensure that receiving terminal has very high isolation relative to transmitting terminal simultaneously.The design of the channel-splitting filter of function admirable is one of difficult point in Satellite Communication System Design.
Summary of the invention
The present invention will disclose that a kind of structure is simple, handling ease, debugging high performance channel-splitting filter easily.This channel-splitting filter does not need to be divided into many parts, only need be divided into cover plate and base two parts, adopts the additional linear cutter of Numerical-control Milling Machines to complete.This device has and matches, and shock resistance is strong, is easy to the advantage of debugging.
To achieve these goals, the technical solution used in the present invention is as follows:
E face channel-splitting filter, comprises public input, directly goes out end, and at least two branched bottoms, and public input is communicated with directly going out to hold by least one adapter cavity, and every bar branched bottom comprises a side and goes out to hold.At least one branched bottom also comprises at least one-level matching transition section, every bar branched bottom with public input or/and adapter cavity is or/and directly go out to hold and be communicated with.At least one side go out end by least one-level matching transition section with public input or/and adapter cavity is or/and directly go out to hold and be communicated with, in decision design, the number of this branched bottom is good with 4.Public input is communicated with directly going out to hold by least one adapter cavity.The angle of normal direction of normal direction and public input that side goes out end is the span of A, A: 60 degree of < A < 120 degree, with 90 degree for the best.The angle directly going out the normal direction of end and the normal direction of public input is less than 30 degree, with 0 degree for the best; Have at least the angle of direction at a time and between the normal direction of public input of the electric field of Chu Duan center, a side to be the span of B, B to be: B < 30 degree.
That is, to go out the E field polarization direction of microwave mode of end parallel with the normal direction of public input in side.All sides go out end and are distributed in public input or/and adapter cavity is or/and directly go out the side vertical with public input normal direction of end.
For the ease of adopting milling processing, the public input be interconnected successively, each adapter cavity remain unchanged with the size of the arbitrary cross section vertical with public input normal direction on any direction of the normal of the center perpendicular to this public input directly going out end along public input normal direction or reduce gradually.Namely the public input be interconnected successively, each adapter cavity are cross section X with directly going out the end arbitrary cross section vertical with public input normal direction, along public input normal direction, the size of cross section X on any direction of the normal of the center perpendicular to this public input remains unchanged or reduces gradually.
When the number of matching transition section is more than or equal to 2, in order to be convenient to adopt Numerical-control Milling Machines processing further, avoid the orientation of frequently rotating work piece, cause mismachining tolerance, all matching transition sections are a part for plane towards the face in public input direction, and simultaneously all matching transition sections all flush towards the face in public input direction.This structure, will be convenient to machine public input from public input direction is disposable by Numerical-control Milling Machines, directly go out end, all sides go out end, all metallic objects, all adapter cavities and directly go out hold.
Coupling between end is gone out in order to realize public input and each side, form a band-pass circuit simultaneously, realize side go out end and directly go out isolation higher between end, at least one matching transition section is provided with at least one metallic object, and this metallic object is positioned on the inwall A of this matching transition section.This inwall A is the inwall of this matching transition section and the interface of this metallic object, and the normal direction of this inwall A is contrary with the normal direction of public input.A metallic object is had at least to be less than the wavelength in free space corresponding to the centre frequency of this E face channel-splitting filter working band apart from the distance of the normal of the center of public input.In the X direction, the size of described metallic object is less than or equal to the size of this matching transition section, and this X-direction is vertical with public input normal, and this X-direction goes out again the normal direction of end perpendicular to the side on the branched bottom belonging to this metallic object simultaneously.
Different according to the purposes of channel-splitting filter, public input, adapter cavity and directly go out the shape of cross section of end can for circular or/and oval or/and rectangle is or/and square, be wherein good with circle with square.
All matching transition sections are column.Preferably design, the shape that all sides go out the cross section of end and matching transition section is rectangle.
In order to regulate the deficiency because design or processing exist, particularly in order to reduce the reflected standing wave ratio directly going out end, be provided with at least two tuning screws with directly going out to hold on the vertical side of normal direction.
According to different designs requirement, directly going out end can be short circuit.At this moment, this channel-splitting filter only goes out end and exports in side, directly go out end and do not export.At this moment, this channel-splitting filter is only operated in a frequency range mostly.
Above, we complete the description of the implementation to E face channel-splitting filter.At this, the best design of this E face channel-splitting filter is described below by we: public input, adapter cavity, directly go out end and be circular waveguide or square waveguide.Side goes out end and is the long limit rectangular waveguide parallel with public input normal direction or waveguide segment with matching transition section.The number that side goes out end is 4, is distributed in the surrounding of adapter cavity symmetrically and evenly.There are two metallic objects in each branched bottom, arrange near adapter cavity.
Specifically, maximum feature of the present invention has abandoned in channel-splitting filter in the past because adapter cavity size is not the too many and alignment error problem of dull polylith must be divided into the to process manufacturing procedure that then erecting and welding brings reducing to cause along adapter cavity axis.Meanwhile, metallic object is set in matching transition section, achieve well directly go out end and side go out to hold between isolation, making the design of channel-splitting filter and separation filter and debug can complete independently.This new departure can reduce the processing cost of channel-splitting filter greatly, and its anti-seismic performance and coupling are significantly improved.
The invention has the advantages that: structure is simple, and difficulty of processing is low, easily, shock resistance is strong, and insertion loss is low in assembling.
Accompanying drawing explanation
Fig. 1 is embodiment 1 of the present invention enters channel-splitting filter direction, E face schematic diagram from public input.
Fig. 2 is that the A-A of Fig. 1 is to cutaway view
Fig. 3 is that embodiment 2 enters the schematic diagram in channel-splitting filter direction, E face from public input.
Fig. 4 is that embodiment 3 enters the schematic diagram in channel-splitting filter direction, E face from public input.
Fig. 5 is that embodiment 4 enters the schematic diagram in channel-splitting filter direction, E face from public input.
The corresponding title of attached number in the figure: 1, public input, 2, directly go out end, 22, tuning screw, 3, side goes out end, 4, adapter cavity, 5, matching transition section, 51, metallic object.
Part nominal definition used herein: the normal direction of public input, refers to the direction pointing to E face channel-splitting filter perpendicular to public input end face.Directly going out the normal direction of end, referring to perpendicular to directly going out the direction of end face away from E face channel-splitting filter.Side goes out the normal direction of end 3, refers to go out the direction of end face away from E face channel-splitting filter perpendicular to side.The centre frequency of E face channel-splitting filter working band: if this channel-splitting filter only has a working band, this centre frequency is the highest frequency of this working band and the mean value of low-limit frequency.If this channel-splitting filter has multiple working band, this centre frequency is the mean value of the low-limit frequency of the working band that the highest frequency of the working band that this frequency is the highest and frequency are minimum.
Embodiment
Embodiment 1
As illustrated in fig. 1 and 2, E face channel-splitting filter, comprises public input 1, directly goes out end 2, and 4 sides go out end 3, and be communicated with by 3 adapter cavities at public input 1 and directly going out between end 2, each side is gone out end 3 and is communicated with two adapter cavities 4 by 2 grades of matching transition sections 5.The angle that each side goes out the normal direction of end 3 and the normal direction of public input 1 is 90 degree.The angle directly going out the normal direction of end 2 and the normal direction of public input 1 is zero degree.Each side angle gone out between the polarised direction of the electric field of end 3 center and the normal direction of public input 1 is 0 degree.That is, to go out the polarised direction of the electric field of the microwave mode of end 3 parallel with public input 1 normal direction in each side.4 sides go out end 3 and are evenly distributed on adapter cavity 4, and its normal direction is all vertical with public input 1 normal direction.
For the ease of adopting Numerical-control Milling Machines processing, avoid the orientation of frequently rotating work piece, cause mismachining tolerance, the public input 1 be interconnected, each adapter cavity 4 reduce along public input 1 normal direction gradually with the size of the cross section vertical with public input 1 normal direction on any direction of the normal of the center perpendicular to this public input 1 directly going out end 2.
The number of the matching transition section 5 on every bar branched bottom is 2.In order to be convenient to adopt Numerical-control Milling Machines and linear cutter further, avoid the orientation of frequently rotating work piece, cause mismachining tolerance, all matching transition sections 5 are a part for plane towards the face in the direction of public input 1, and the face in the direction towards public input 1 of simultaneously all matching transition sections 5 all flushes.
All matching transition sections 5 are all column, and the normal direction of its axes normal in public input 1 center also radially.The matching transition section 5 of each column is provided with 1 metallic object 51, goes out coupling between end 3 for realizing public input 1 and each side, forming a band-pass circuit simultaneously, realizing side and go out end 3 and directly go out isolation higher between end 2.This metallic object 51 is positioned on the inwall A of this matching transition section 5, and this inwall A is the inwall of this matching transition section 5 and the interface of this metallic object 51, and the normal direction of this inwall A is contrary with the normal direction of public input 1; Altogether 4 metallic objects 51 are less than the wavelength in free space corresponding to the centre frequency of this E face channel-splitting filter working band apart from the distance of the normal of the center of public input 1; In the X direction, the size of described metallic object 51 is less than the size of this matching transition section 5.This X-direction is vertical with public input 1 normal, goes out again the normal direction of end 3 perpendicular to the side on the branched bottom belonging to this metallic object 51 simultaneously.
Public input 1, adapter cavity 4 and the shape of cross section that directly goes out end 2 are for close to foursquare irregularly shaped.
All matching transition sections 5 are rectangular cylindrical body.The shape that all sides go out the cross section of end 3 and matching transition section 5 is rectangle.
In order to the matched well being further implemented in the public input 1 of high-frequency band and directly go out between end 2, we are directly going out on end 2 to add two tuning screws 22.
Embodiment 2
As shown in Figure 3.Embodiment 2 is only with the difference of embodiment 1, and in the X direction, the size of described metallic object 51 equals the size of this matching transition section 5.
Embodiment 3
As shown in Figure 4.Embodiment 3 is only with the difference of embodiment 2, public input 1, and adapter cavity 4 and the shape of cross section directly going out end 2 are the circle more easily calculating and process.
Embodiment 4
As shown in Figure 5.Embodiment 4 is only with the difference of embodiment 1, public input 1, and adapter cavity 4 and the shape of cross section directly going out end 2 are the square more easily calculating and process.
As mentioned above, the present invention can be realized preferably.
Claims (7)
1.E face channel-splitting filter, comprise public input (1), directly go out end (2), article at least two, branched bottom, public input (1) is communicated with directly going out to hold (2) by least one adapter cavity (4), and every bar branched bottom comprises a side and goes out end (3), at least one branched bottom also comprises at least one-level matching transition section (5), every bar branched bottom with public input (1) or/and adapter cavity (4) is or/and directly go out to hold (2) to be communicated with, at least one side go out end (3) by least one-level matching transition section (5) with public input (1) or/and adapter cavity (4) is or/and directly go out to hold (2) to be communicated with, it is characterized in that: the angle that side goes out the end normal direction of (3) and the normal direction of public input (1) is A, the span of A is: 60 degree of < A < 120 degree, the angle directly going out the end normal direction of (2) and the normal direction of public input (1) is less than 30 degree, the angle of direction at a time and between the normal direction of public input (1) having at least a side to go out the electric field of end (3) center is the span of B, B: B < 30 degree, the number of matching transition section (5) is more than or equal to 2, all matching transition sections (5) are a part for plane towards the face in public input (1) direction, and simultaneously all matching transition sections (5) all flush towards the face in public input (1) direction.
2. E face according to claim 1 channel-splitting filter, it is characterized in that: the public input (1) be interconnected successively, each adapter cavity (4) are cross section X with the arbitrary cross section directly going out end (2) vertical with public input (1) normal direction, along public input (1) normal direction, the size of cross section X on any direction of the normal of the center perpendicular to this public input (1) remains unchanged or reduces gradually.
3. E face according to claim 1 channel-splitting filter, it is characterized in that: at least one matching transition section (5), be provided with at least one metallic object (51), this metallic object (51) is positioned on the inwall A of this matching transition section (5), this inwall A is the inwall of this matching transition section (5) and the interface of this metallic object (51), and the normal direction of this inwall A is contrary with the normal direction of public input (1); A metallic object (51) is had at least to be less than the wavelength in free space corresponding to the centre frequency of this E face channel-splitting filter working band apart from the distance of the normal of the center of public input (1); In the X direction, the size of described metallic object (51) is less than or equal to the size of this matching transition section (5), this X-direction is vertical with public input (1) normal, and this X-direction goes out again the normal direction of end (3) perpendicular to the side on the branched bottom belonging to this metallic object (51) simultaneously.
4. the E face channel-splitting filter according to claim 1-3 any one, is characterized in that: the shape of cross section of public input (1) is circular or oval or rectangle or square; The shape of cross section vertical with the normal direction of public input (1) of adapter cavity (4) is circular or/and oval or rectangle or square; The shape of cross section directly going out end (2) is circular or oval or rectangle or square.
5. E face according to claim 4 channel-splitting filter, is characterized in that: all matching transition sections (5) are column, and the shape that simultaneously all sides go out the cross section of end (3) and matching transition section (5) is rectangle.
6. E face according to claim 5 channel-splitting filter, is characterized in that: on the side directly going out end (2), be provided with at least two tuning screws (22).
7. E face according to claim 6 channel-splitting filter, is characterized in that: directly going out end (2) is short-circuit end.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410220914.9A CN103956548B (en) | 2014-05-23 | 2014-05-23 | E face channel-splitting filter |
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| CN201410220914.9A CN103956548B (en) | 2014-05-23 | 2014-05-23 | E face channel-splitting filter |
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| CN103956548B true CN103956548B (en) | 2016-03-23 |
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| JP6761370B2 (en) * | 2017-03-30 | 2020-09-23 | 三菱電機株式会社 | Antenna feeding circuit |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0987786A2 (en) * | 1998-09-18 | 2000-03-22 | Hughes Electronics Corporation | Coaxially configured omt-multiplexer assembly |
| US6473053B1 (en) * | 2001-05-17 | 2002-10-29 | Trw Inc. | Dual frequency single polarization feed network |
| US6621375B2 (en) * | 2001-10-24 | 2003-09-16 | Channel Master Llc | N port feed device |
| CN101689691A (en) * | 2007-09-07 | 2010-03-31 | 泰勒斯公司 | Omt type broadband multiband transmission-reception coupler-separator for RF frequency telecommuncations antennas |
| CN103138036A (en) * | 2013-02-05 | 2013-06-05 | 广东通宇通讯股份有限公司 | Microwave communication system and compact four-way converter thereof |
| CN203967222U (en) * | 2014-05-23 | 2014-11-26 | 成都赛纳赛德科技有限公司 | E face channel-splitting filter |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5806098B2 (en) * | 2010-12-20 | 2015-11-10 | 日本電信電話株式会社 | Fin-line polarization separator |
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2014
- 2014-05-23 CN CN201410220914.9A patent/CN103956548B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0987786A2 (en) * | 1998-09-18 | 2000-03-22 | Hughes Electronics Corporation | Coaxially configured omt-multiplexer assembly |
| US6473053B1 (en) * | 2001-05-17 | 2002-10-29 | Trw Inc. | Dual frequency single polarization feed network |
| US6621375B2 (en) * | 2001-10-24 | 2003-09-16 | Channel Master Llc | N port feed device |
| CN101689691A (en) * | 2007-09-07 | 2010-03-31 | 泰勒斯公司 | Omt type broadband multiband transmission-reception coupler-separator for RF frequency telecommuncations antennas |
| CN103138036A (en) * | 2013-02-05 | 2013-06-05 | 广东通宇通讯股份有限公司 | Microwave communication system and compact four-way converter thereof |
| CN203967222U (en) * | 2014-05-23 | 2014-11-26 | 成都赛纳赛德科技有限公司 | E face channel-splitting filter |
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