CN203950900U - Waveguide coaxial converter - Google Patents
Waveguide coaxial converter Download PDFInfo
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- CN203950900U CN203950900U CN201420394286.1U CN201420394286U CN203950900U CN 203950900 U CN203950900 U CN 203950900U CN 201420394286 U CN201420394286 U CN 201420394286U CN 203950900 U CN203950900 U CN 203950900U
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- 238000005859 coupling reaction Methods 0.000 description 7
- 238000004891 communication Methods 0.000 description 5
- 239000000523 sample Substances 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 238000002955 isolation Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- PLAIAIKZKCZEQF-UHFFFAOYSA-N methyl 6-chloro-2-oxo-3h-1,2$l^{4},3-benzodithiazole-4-carboxylate Chemical compound COC(=O)C1=CC(Cl)=CC2=C1NS(=O)S2 PLAIAIKZKCZEQF-UHFFFAOYSA-N 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
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Abstract
The utility model provides a kind of waveguide coaxial converter that can be used in conjunction with the crack waveguide tube at least with two pipelines.The waveguide coaxial converter that the utility model relates to, by electromagnetic wave signal at signal transmitting receiving element and at least have between the crack waveguide tube of two pipelines that be arranged in parallel and change and transmit, it is characterized in that, have: waveguide, be used for transmitting electromagnetic wave signal, at least comprise that two cavitys that be arranged corresponding with two pipelines are as the first cavity and the second cavity; At least two feed element, each inside cavity is stretched into respectively in one end, for absorbing most electromagnetic wave signal; At least two radio-frequency joints, are connected with the other end of each feed element respectively, and stretch out cavity and signal transmitting receiving element and be connected; And short circuit metal plate, sealed one end that is fixed on waveguide, wherein, the other end of waveguide is provided with opening, and is connected with crack waveguide tube as link, between each cavity, is provided with demarcation strip.
Description
Technical field
The utility model relates to a kind of waveguide coaxial converter.
Background technology
Now, in the wireless communication system that reliability and fail safe and transmission range are had relatively high expectations, for example, in urban track traffic wireless telecommunication system, slotted waveguide antenna is widely used.Slotted waveguide antenna can make can in waveguide, transmit from the Multi-path electricity magnetic wave signal of the multiloop loop systems such as the train automatic controlling system based on radio communication (CBTC) in urban track traffic wireless communication technology system, Customer information display system (PIDS), rail transportation vehicle-mounted video monitoring system (vehicle-mounted CCTV system), vehicle-mounted mobile TV system simultaneously.
But, in above-mentioned these systems, due to the roll-off characteristic (any filter can not be all desirable step mode) of the filter of electromagnetic signals, cause electromagnetic wave signal always to have certain out-of-band radiation, namely our alleged transmit scattering conventionally.The existence of transmit scattering produces phase mutual interference can make narrow multiple signals of isolate bands each other transmit in waveguide time.
For fear of producing such interference, just the isolation between these signals must be increased to meet insulation request, normally adopt RF module to increase isolation, close road, then signal is transformed in crack waveguide tube and is transmitted by coaxial converter.For example, in urban track traffic wireless telecommunication system, it is generally 100dB that isolation of system requires, between signal, the isolate bands of script is 50dB, the isolate bands that RF module can increase is 50dB, and therefore, signal is after RF module, isolate bands can reach 100dB, thereby reaches insulation request.
But along with the development of communication, the signal transmitting in each system is on the increase, the isolate bands between signal is also more and more narrow, even if cause having adopted RF module, the isolation between signal is also difficult to meet the demands.Such signal is transmitted by a set of slotted waveguide antenna, cannot meet communication need at all.
In this case, just need left and right, 100 meters, interval to lay in addition more a set of radiating guide, the signal that cannot reach insulation request transmits by two cover radiating guides respectively.But, do like this and not only expend equipment, and laying space need to be set separately, particularly, in track traffic, the laying space in tunnel is original just quite compact, cannot find unnecessary laying space to lay the second cover radiating guide at all.
In order to solve such problem, there is human hair to understand a kind of crack waveguide tube, as shown in Figure 5, this crack waveguide tube 15 at least has two pipelines 16 and 17 that be arranged in parallel, between two pipelines, separate with demarcation strip 18, these two pipelines transmit respectively frequency interval each other cannot reach the two class electromagnetic wave signals that predetermined isolated requires.
But existing waveguide coaxial converter all cannot be used in conjunction with the crack waveguide tube of this structure 15, therefore, be badly in need of a kind of new waveguide coaxial converter of invention.
Utility model content
The utility model has adopted following structure in order to solve above-mentioned problem.
The utility model provides a kind of waveguide coaxial converter, by electromagnetic wave signal at signal transmitting receiving element and at least have between the crack waveguide tube of two pipelines that be arranged in parallel and change and transmit, it is characterized in that, have: waveguide, be used for transmitting electromagnetic wave signal, at least comprise that two cavitys that be arranged corresponding with two pipelines are as the first cavity and the second cavity; At least two feed element, each inside cavity is stretched into respectively in one end, for absorbing most electromagnetic wave signal; At least two radio-frequency joints, are connected with the other end of each feed element respectively, and stretch out cavity and signal transmitting receiving element and be connected; And short circuit metal plate, sealed one end that is fixed on waveguide, for transmitting electromagnetic wave signal between feed element and the other end of waveguide, wherein, the other end of waveguide is provided with opening, and is connected with crack waveguide tube as link, between each cavity, is provided with demarcation strip.
In addition, the waveguide coaxial converter that the utility model provides can also have such feature: the opening outer rim of waveguide is provided with flange, for being connected with the described slotted waveguide seal of tube.
Utility model effect
According to waveguide coaxial converter of the present utility model, because waveguide at least comprises two the first cavitys that be arranged in parallel and the second cavity, these two cavitys are corresponding with two pipelines of crack waveguide tube respectively, by electromagnetic wave signal at signal transmitting receiving element and at least have between the crack waveguide tube of two pipelines that be arranged in parallel and change and transmit, and the other end of waveguide is provided with opening and can serves as link and be connected with crack waveguide tube, therefore, waveguide coaxial converter of the present utility model can be used in conjunction with the crack waveguide tube at least with two pipelines, realize signal transmission.
Brief description of the drawings
Fig. 1 is the structural representation that the utility model waveguide coaxial converter is in an embodiment seen from front;
Fig. 2 is the structural representation that the utility model waveguide coaxial converter is in an embodiment seen from the back side;
Fig. 3 is the exploded view of the utility model waveguide coaxial converter in an embodiment;
Fig. 4 is the structural representation of the utility model continuous transmission system of signal in an embodiment; And
Fig. 5 is the structural representation of crack waveguide tube.
Embodiment
Describe the waveguide coaxial converter relating in detail below in conjunction with the drawings and specific embodiments, but protection range of the present utility model is not limited to following execution mode.
< embodiment >
As shown in Fig. 1～5, waveguide coaxial converter 10 is in the signal transmitting apparatus 12 of the continuous transmission system 11 of signal, for realizing the mutual conversion of electromagnetic wave signal between transmitting receiving element 13 and the crack waveguide tube 15 of slotted waveguide antenna 14,, in the future the signal of spontaneous emission receiving element 13 is transformed in crack waveguide tube 15, or the signal that crack waveguide tube 15 is transmitted be transformed into transmitting receiving element 13 and transmit.In the present embodiment, waveguide coaxial converter 10 is installed in and is positioned at one end that transmitting receiving element 13 is connected with slotted waveguide antenna 14.
Waveguide coaxial converter 10 has a waveguide flange 10a, two wave-guide cavity wave 10b, demarcation strip 10c, two feed element 10d, two radio-frequency joint 10e and short circuit metal plate 10f.
Waveguide coaxial converter 10 is fixedly connected on the end of crack waveguide tube 15 by waveguide flange 10a, waveguide flange 10a and crack waveguide tube 15 adopt welding manner to be fixedly linked.
Two wave-guide cavity wave 10b are respectively used to transmit A, B two class electromagnetic wave signals as first wave guide cavity 10b-1 and the second wave-guide cavity wave 10b-2, and they are connected with the first pipeline 16 and second pipe 17 respectively.Have a coupling aperture a2 at the upper wall place of two wave-guide cavity wave 10b.
Demarcation strip 10c is arranged between two wave-guide cavity wave 10b, plays buffer action.
In the present embodiment, two wave-guide cavity wave 10b and a demarcation strip 10c form a double wave conduit.
Two feed element 10d are arranged on respectively in two wave-guide cavity wave 10b, and it can be probe, oscillator or ring.In the present embodiment, feed element 10d is probe 10d.
Two radio-frequency joint 10e are connected with two feed element 10d respectively, and stretch out two wave-guide cavity wave 10b.In the first wave guide coaxial converter 10 of the present embodiment one, one in these two radio-frequency joint 10e is connected with a port of transmitting receiving element 13 by cable, receive this port output Yi road category-A merit sub-signal, another is connected with the another port of transmitting receiving element 13 by cable, receives this port output Yi road category-B merit sub-signal.
Each radio-frequency joint 10e is for the pipeline that is transformed into crack waveguide tube 15 by feed element 10d from a class electromagnetic wave signal of cable is transmitted, or the electromagnetic wave signal of endokinetic fissure waveguide 15 is transformed in cable by feed element 10d and transfers to transmitting receiving element 13 in the future.
Radio-frequency joint 10e comprises plinth 10e-1 and joint 10e-2.Plinth 10e-1 be placed in wide of wave-guide cavity wave 10b upper, the circular hole a3 of plinth 10e-1 is concentric with the coupling aperture a2 of wave-guide cavity wave 10b, plinth 10e-1 is connected by welding manner with wave-guide cavity wave 10b.Joint 10e-2 is connected with feed element 10d, adopts screw mode to be fixed on plinth 10e-1 upper, and the insulator a5 of joint 10e-2 and the circular hole a3 size of plinth 10e-1 are matched, concentric with coupling aperture a2 to ensure probe 10d.
In the present embodiment, coupling aperture a2 is more smaller than circular hole a3, forms the step-like insulator a5 for permanent joint 10e-2.The inner wire a4 of joint 10e-2, as probe 10d, by double wave conduit coupling aperture a2, extend in wave-guide cavity wave 10b and approaches 1/2 height, and microwave signal is activated in wave-guide cavity wave 10b and converts TE10 mould to from TEM mould.
Short circuit metal plate 10f is fixed on the a1 side of two wave-guide cavity wave 10b, apart from the odd-multiple place of coupling aperture a2 distance lambda/4, sealing with short circuit metal plate 10f is in order to offset the higher mode reactance in probe 10d and the generation of coupling aperture a2 place, and making microwave energy to the transmission of waveguide flange 10a direction, short circuit metal plate 10f and two wave-guide cavity wave 10b fix with welding manner.
The effect of embodiment and effect
According to the waveguide coaxial converter of the present embodiment, because waveguide comprises two first wave guide cavitys that be arranged in parallel and the second wave-guide cavity wave, frequency interval each other can be respectively used to transmit and A, the B two class electromagnetic wave signals that predetermined isolated requires cannot be reached, and the other end of waveguide is provided with opening and can serves as link and be connected with other second electromagnetic wave elements, therefore, can be used in conjunction with the crack waveguide tube with the first pipeline and second pipe, realize the continuous transmission of signal.
Certainly, the related waveguide of the utility model is revealed load and is not merely defined in described structure in the present embodiment.
In the time need to being used in conjunction with the crack waveguide tube with more than three pipelines, as waveguide coaxial converter of the present utility model, can also there are three cavitys above, and three feed element and frequency joints above.
Claims (2)
1. a waveguide coaxial converter, at signal transmitting receiving element and at least have between the crack waveguide tube of two pipelines that be arranged in parallel and change and transmit, is characterized in that having electromagnetic wave signal:
Waveguide, for transmitting electromagnetic wave signal, at least comprises that two cavitys that be arranged corresponding with described two pipelines are as the first cavity and the second cavity;
At least two feed element, inside cavity described in each is stretched into respectively in one end, for absorbing most described electromagnetic wave signal;
At least two radio-frequency joints, are connected with the other end of each described feed element respectively, and stretch out described cavity and be connected with described signal transmitting receiving element; And
Short circuit metal plate, sealed one end that is fixed on described waveguide, for electromagnetic wave signal is transmitted between feed element and the other end of described waveguide,
Wherein, the described other end of described waveguide is provided with opening, and is connected with crack waveguide tube as link,
Between each described cavity, be provided with demarcation strip.
2. waveguide coaxial converter according to claim 1, is characterized in that:
Wherein, the described opening outer rim of described waveguide is provided with flange, for being connected with the described slotted waveguide seal of tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420394286.1U CN203950900U (en) | 2014-07-16 | 2014-07-16 | Waveguide coaxial converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420394286.1U CN203950900U (en) | 2014-07-16 | 2014-07-16 | Waveguide coaxial converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203950900U true CN203950900U (en) | 2014-11-19 |
Family
ID=51892919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420394286.1U Expired - Lifetime CN203950900U (en) | 2014-07-16 | 2014-07-16 | Waveguide coaxial converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203950900U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104505563A (en) * | 2014-12-31 | 2015-04-08 | 宁波华瓷通信技术有限公司 | Fixing structure of joint and cavity |
-
2014
- 2014-07-16 CN CN201420394286.1U patent/CN203950900U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104505563A (en) * | 2014-12-31 | 2015-04-08 | 宁波华瓷通信技术有限公司 | Fixing structure of joint and cavity |
| CN104505563B (en) * | 2014-12-31 | 2018-04-13 | 宁波华瓷通信技术有限公司 | A kind of fixed structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 201802 Shanghai, Jiading District silver Xiang Road, room 655, No. 1309 Patentee after: CETC SHANGHAI MICROWAVE COMMUNICATION CO.,LTD. Address before: 201802 Shanghai City, Jiading District Nanxiang Town, Shanghai Yi Road No. 185 building 4 Patentee before: CETC MICROWAVE COMMUNICATION (SHANGHAI) CO.,LTD. |
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| CX01 | Expiry of patent term |
Granted publication date: 20141119 |
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| CX01 | Expiry of patent term |