CN202384465U - Long centimeter waveband ultra-short rectangle-round transition waveguide - Google Patents
Long centimeter waveband ultra-short rectangle-round transition waveguide Download PDFInfo
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- CN202384465U CN202384465U CN2011205760243U CN201120576024U CN202384465U CN 202384465 U CN202384465 U CN 202384465U CN 2011205760243 U CN2011205760243 U CN 2011205760243U CN 201120576024 U CN201120576024 U CN 201120576024U CN 202384465 U CN202384465 U CN 202384465U
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- rectangle
- round transition
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Abstract
The utility model discloses a long centimeter waveband ultra-short rectangle-round transition waveguide. The waveguide comprises a rectangle-round transition section, and is characterized in that the rectangle-round transition section comprises a rectangular tube part and a round tube part which are connected and conducted with each other through an annular piece part, and an irregular curved surface transition section between the rectangular tube part and the round tube part; and a load matching rod is fixed in the tube cavity of the rectangular tube part. According to the utility model, due to the adoption of the irregular curved surface transition section, ultra-short transition between rectangle-round waveguides of long centimeter waves is realized; the length of the transition is smaller than half waveguide wavelength; the load matching rod is used for impedance matching; the voltage standing wave ratio of the load matching rod is less than 1.05; and the waveguide is stable and reliable in performance and low in cost.
Description
Technical field
The utility model relates to a kind of waveguide component, especially a kind of super-short distance circle transition waceguide that is operated under the long centimeter wave.
Background technology
The microwave current communication technology adopts circular waveguide to obtain circularly polarised wave usually, and general feed system adopts rectangular waveguide more, and the moment round transition waveguide can realize the conversion between the square circle.
At present, common moment round transition waveguide has two kinds of frame modes.A kind of is gradual change moment round transition as shown in Figure 1, transits to the circular waveguide cross sectional shape continuously and lentamente from standard rectangular waveguide shape.Such transition can be expanded compacted existing through mould extending repeatedly, perhaps realizes through the be careful Special Working Technology of a lathe of line cutting.But there are three shortcomings in this method: the one, and the length of transition is very long, at least two guide wavelengths; The 2nd, through the be careful special warfare processing of a lathe of line cutting, not only difficulty of processing is big, cost is high, and the processing characteristics of lathe is had relatively high expectations; The 3rd, for the microwave product of low-frequency range, the product length that this method is designed is longer, influences the physical dimension in space during use.Another kind is a step moment round transition as shown in Figure 2, and step moment round transition is easy to processing than the gradual transition compact conformation.But also there is deficiency in this method: the one, and its length is at least greater than half guide wavelength; The 2nd, its telecommunication parameter and bandwidth receive the influence of ladder number, and the ladder number is many more, and its more parameters is good, and bandwidth is wide more, but length oversize then being unfavorable for uses.
Continuous development along with modern microwave technology; Require the volume of each microwave device small and exquisite as far as possible, light, dependable performance, need a kind of ultrashort type moment round transition waveguide that is operated under the long centimeter wave in the production; Under the prerequisite that guarantees the low-voltage standing-wave ratio, its length is less than half guide wavelength.
The utility model content
The purpose of the utility model just provides the waveguide of a kind of long superhigh frequency band ultrashort type moment round transition, and its voltage standing wave ratio is less than 1.05, and its length is less than half guide wavelength.
The utility model adopts following technical scheme; Comprise the moment round transition section; It is characterized in that: said moment round transition section comprises rectangle pipe portion and pipe portion; Rectangle pipe portion is connected conducting with pipe portion through ring plate portion, and said ring plate portion is provided with an approximate hexagonal centre bore, and centre bore comprises symmetrically arranged a pair of V-shaped part edge up and down; V-shaped part is along being connected with the long side pipe sheet of adjacent position rectangle pipe portion through one section irregular surface blending section, and the tube chamber internal fixation of said rectangle pipe portion has the loading matching stub.
Its structural principle is: the moment round transition of waveguide all is the suitable variation through waveguide cross-section, realizes the conversion of square-circular waveguide pattern.The utility model adopts irregular surface blending section and the method that loads the matching stub coupling, and the circular waveguide mouth is converted into the rectangular waveguide mouth of standard gradually, has realized the conversion of rectangular waveguide to circular waveguide, has satisfied the requirement of telecommunication parameter.Whole irregular surface blending section all is to be connected by different R.By the requirement of curve form, specially made model and R rule on the technology, detect with model and R rule, reach after the requirement with No. 000 emery cloth interior surface thereof of polishing, polish with polishing paper at last, inside surface roughness reaches more than 0.8.The tube chamber internal fixation of rectangle pipe portion has the loading matching stub, through reasonably confirming to load the diameter and the placement location of matching stub, can realize that electromagnetic wave runs into discontinuity surface reflection stack afterwards and offsets in transmission course, obtains lower voltage standing wave ratio.
A kind of improvement is, said rectangle pipe portion, pipe portion, ring plate portion, irregular surface blending section are integral the formula structure.This structure processing cost is low.
The another kind of improvement is also to comprise a circular flange and a rectangular opening ring flange that is connected in rectangle pipe portion that is connected in pipe portion.This syndeton, versatility is good.
Also have a kind of improvement to be, said loading matching stub is vertical and is fixed in the round metal bars on the long side pipe sheet.
Further improving is that it is a pair of that said round metal bars is provided with quantity.
The utlity model has following advantage:
1, transition structure is compact.The utility model adopts irregular surface blending section; Realized the transition of the short length between the rectangle noundel wave guide under the long centimeter wave; Its length is less than half guide wavelength; Can manufacture and design the waveguide of corresponding ultrashort type moment round transition according to the needs of user job frequency and bandwidth, having a kind of is the utility model product of 140mm to guide wavelength, and its length that contains ring flange is 67.2mm only.2, load matching stub and be used for impedance matching, its voltage standing wave ratio does not have influence less than 1.05 to other indexs.3, it is stable and reliable for performance, and cost is low.
Description of drawings
Fig. 1: a kind of gradual change moment round transition sketch map of prior art.
Fig. 2: the step moment round transition sketch map of prior art.
Fig. 3: the stereochemical structure of the utility model (do not contain and load matching stub) sketch map.
Fig. 4: a kind of embodiment sectional structure of the utility model sketch map.
Sketch map is looked on the left side of Fig. 5: Fig. 4.
Sketch map is looked on the right side of Fig. 6: Fig. 4.
Fig. 7: a kind of embodiment perspective view of the utility model.
Embodiment
Shown in Fig. 3 to 7; The utility model adopts following technical scheme; Comprise moment round transition section 1, said moment round transition section 1 comprises rectangle pipe portion 2 and pipe portion 3, and rectangle pipe portion 2 is connected conducting with pipe portion 3 through ring plate portion 4; Said ring plate portion 4 is provided with an approximate hexagonal centre bore 5; Centre bore 5 comprises up and down symmetrically arranged a pair of V-shaped part edge, and V-shaped part is along being connected with the long side pipe sheet of adjacent position rectangle pipe portion 2 through one section irregular surface blending section 6, and the tube chamber internal fixation of said rectangle pipe portion 2 has loading matching stub 7.
Its structural principle is: the utility model adopts irregular surface blending section 6 and the method that loads matching stub 7 couplings, and the circular waveguide mouth is converted into the rectangular waveguide mouth of standard gradually, has realized the conversion of rectangular waveguide to circular waveguide, has satisfied the requirement of telecommunication parameter.Whole irregular surface blending section 6 all is to be connected by different R.By the requirement of curve form, specially made model and R rule on the technology, detect with model and R rule, reach after the requirement with No. 000 emery cloth interior surface thereof of polishing, polish with polishing paper at last, inside surface roughness reaches more than 0.8.The tube chamber internal fixation of rectangle pipe portion 2 has the matching stub 7 of loading, through reasonably confirming to load the diameter and the placement location of matching stub 7, can realize that electromagnetic wave runs into discontinuity surface reflection stack afterwards and offsets in transmission course, obtains lower voltage standing wave ratio.
A kind of improvement is, said rectangle pipe portion 2, pipe portion 3, ring plate portion 4, irregular surface blending section 6 are integral the formula structure.This structure processing cost is low.
To shown in Figure 7, the another kind of improvement is also to comprise a circular flange 8 and a rectangular opening ring flange 9 that is connected in rectangle pipe portion 2 that is connected in pipe portion 3 like Fig. 4.This syndeton, versatility is good.
Also have a kind of improvement to be, said loading matching stub 7 is vertical and is fixed in the round metal bars on the long side pipe sheet.Through selecting the diameter of suitable round metal bars, the reflected wave that its is produced is opposite with reflected wave equal and opposite in direction, the phase place of the generation of transition waceguide terminate load, thereby can cancel out each other, and reaches matching status, can obtain electrical property preferably.
Like Fig. 5, Fig. 6, shown in Figure 7, further improving is that it is a pair of that said round metal bars is provided with quantity.
After each part processing of the utility model is accomplished, adopt silver brazing to be welded into integral body, after finishing, the polishing, test its voltage standing wave ratio and all get final product less than 1.05.
With the equivalent transformation of the similar homogeneous structure of utility model, all fall into the protection range of the utility model.
Claims (5)
1. one kind long superhigh frequency band ultrashort type moment round transition waveguide; Comprise the moment round transition section; It is characterized in that: said moment round transition section comprises rectangle pipe portion and pipe portion; Rectangle pipe portion is connected conducting with pipe portion through ring plate portion, and said ring plate portion is provided with an approximate hexagonal centre bore, and centre bore comprises symmetrically arranged a pair of V-shaped part edge up and down; V-shaped part is along being connected with the long side pipe sheet of adjacent position rectangle pipe portion through one section irregular surface blending section, and the tube chamber internal fixation of said rectangle pipe portion has the loading matching stub.
2. a kind of long superhigh frequency band ultrashort type moment round transition according to claim 1 waveguide is characterized in that: said rectangle pipe portion, pipe portion, ring plate portion, irregular surface blending section are integral the formula structure.
3. a kind of long superhigh frequency band ultrashort type moment round transition according to claim 2 waveguide is characterized in that: also comprise a circular flange and a rectangular opening ring flange that is connected in rectangle pipe portion that is connected in pipe portion.
4. a kind of long superhigh frequency band ultrashort type moment round transition according to claim 3 waveguide is characterized in that: said loading matching stub is vertical and is fixed in the round metal bars on the long side pipe sheet.
5. a kind of long superhigh frequency band ultrashort type moment round transition according to claim 4 waveguide is characterized in that: it is a pair of that said round metal bars is provided with quantity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205760243U CN202384465U (en) | 2011-12-30 | 2011-12-30 | Long centimeter waveband ultra-short rectangle-round transition waveguide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205760243U CN202384465U (en) | 2011-12-30 | 2011-12-30 | Long centimeter waveband ultra-short rectangle-round transition waveguide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202384465U true CN202384465U (en) | 2012-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205760243U Expired - Lifetime CN202384465U (en) | 2011-12-30 | 2011-12-30 | Long centimeter waveband ultra-short rectangle-round transition waveguide |
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| Country | Link |
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| CN (1) | CN202384465U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102569966A (en) * | 2011-12-30 | 2012-07-11 | 零八一电子集团四川华昌电子有限公司 | Ultrashort rectangular-circular transitional waveguide under long-centimeter waveband |
-
2011
- 2011-12-30 CN CN2011205760243U patent/CN202384465U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102569966A (en) * | 2011-12-30 | 2012-07-11 | 零八一电子集团四川华昌电子有限公司 | Ultrashort rectangular-circular transitional waveguide under long-centimeter waveband |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120815 |