CN1208869C - High-power circular slot waveguide - Google Patents
High-power circular slot waveguide Download PDFInfo
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- CN1208869C CN1208869C CN 03152934 CN03152934A CN1208869C CN 1208869 C CN1208869 C CN 1208869C CN 03152934 CN03152934 CN 03152934 CN 03152934 A CN03152934 A CN 03152934A CN 1208869 C CN1208869 C CN 1208869C
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- Prior art keywords
- wedge
- circular recess
- circular slot
- wave guide
- loads
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Abstract
The present invention relates to a high-power circular slot waveguide which is a microwave component applied in microwave communication and microwave radar. The present invention comprises insulation strips, metal flat plates and bolts, wherein one side of the bilateral insulation strips 1 between two metal flat plates 2, 5 of the circular slot waveguides is also respectively provided with wedge-shaped matched loads 3; a wedge end 31 of the two wedge-shaped matched loads 3 faces to the internal space of the circular slot waveguides along the axial line direction of the circular slot waveguides, and the length of the wedge is the integer multiple of half wavelength of the used electromagnetic wave. For a low-powered circular slot waveguide, the wedge-shaped matching loads 3 are dry loads, and for middle and high power circular slot waveguides, the wedge-shaped matching loads 3 are water loads. The circular slot waveguides can not only counteract the reflection of edge fields and higher-order molds, but also totally absorb electromagnetic waves which penetrate and enter the wedge-shaped matching loads. Accordingly, the operation of the main molds in the circular slot waveguides is not affected, and the damage to the contamination space of the electromagnetic wave of escaping the waveguides is eliminated.
Description
One, technical field
The present invention is a kind of microwave component of using in microwave communication, microwave radar, belongs to the technical field of microwave, millimeter wave, the manufacturing of submillimeter wave radar communication equipment.
Two, background technology
Divide from power capacity, waveguide can be divided into small-power waveguide and middle and high power waveguide.At microwave and millimeter wave band, microstrip line commonly used, soft coaxial line major defect are that power capacity is low.The rectangular waveguide major defect is that working band is narrow, and loss increases sharply with the operating frequency increase, by contrast, slot wave is led superior performance, yet the rectangular channel waveguide is led neither just what with " V " shape slot wave and is connected with the gyrotron of exporting great power now, and that circular recess wave guide is connected with gyrotron is more convenient, because the energy output device of gyrotron is a circular waveguide.
Circular recess wave guide has size big, the power capacity height, loss is low, advantages such as working band is wide, it both had been applicable to microwave, millimeter wave band, also be suitable for what submillimeter wave wave band, but the inboard that is used for separating the insulation strip of two metal parallel flats in the existing circular recess wave guide is the plane, when electromagnetic wave when circular recess wave guide is propagated (along circular recess axially bored line direction, hereinafter to be referred as axis direction) fringing field of electromagnetic wave master mould and the higher mode that produces owing to certain inhomogeneities propagate (the i.e. vertical what circular recess axially bored line direction in edge to circular groove both sides metal parallel flat edge direction, hereinafter to be referred as vertical direction), when electromagnetic wave arrives the madial wall plane of insulation strip, because electric property does not match, a part is reflected back toward the circular groove district, disturb the operate as normal of main mould, another part electromagnetism wave energy penetrates the absorbed layer of coating what insulation strip inner surface, and then passes insulation strip, and the effusion waveguide causes electromagnetic pollution.
Three, summary of the invention
1, technical problem
Purpose of the present invention is in the deficiency of what at prior art, a kind of high power circular recess wave guide is provided, thereby this circular recess wave guide can be offset the work that the reflection of fringing field and higher mode does not influence main mould in the circular recess wave guide, can all absorb the electromagnetic wave that penetrates into wedge shape matched load again, the electromagnetic wave of eliminating the effusion waveguide pollutes the harm in space.
2, technical scheme
Method of the present invention is that dried load of the wedge shape of mating with operation wavelength or water load are loaded onto in the insulation strip inboard between circular recess wave guide two metal plate edges, it is high power circular recess wave guide of the present invention, comprise insulation strip, metal plate, bolt, wedge shape matched load, by the both sides insulation strip between two metal plates of circular recess wave guide, be respectively equipped with wedge shape matched load, towards the interior space of circular recess wave guide, the length of wedge is the integral multiple of employed electromagnetic wave work half-wavelength to the wedge end of this two wedges shape matched load along the axis direction of circular recess wave guide.For low power circular recess wave guide, wedge shape matched load is to do load, makes with the solid material of graphite or other strong absorption microwave, millimeter wave, submillimeter wave.For the circular recess wave guide of middle and high power, wedge shape matched load is a water load, is blow molded into required shape with quartz glass, and is provided with inlet tube and outlet tube, passes to flowing water through inlet tube and outlet tube.
In the symmetrical centre of two metal plate end faces a length direction diameter along flat board being arranged is the manhole of D, and the axis direction of this circular hole is exactly the electromagnetic wave propagation direction, abbreviates axis direction as.
3, beneficial effect
The present invention keeps the circular recess wave guide large scale except continuing, and outside the advantages such as high power capacity, low-loss and broadband, also has the following advantages:
(1) electromagnetic wave is when the circular recess wave guide axis direction is propagated, and the fringing field of electromagnetic wave master mould and the higher mode that produces owing to certain inhomogeneities can be propagated to circular groove both sides metal plate edge direction (being the vertical direction of axis).Wedge shape coupling does load and wedge shape coupling water load can be offset reflection, thereby can not cause the work of disturbing circular groove district master mould.
(2) to penetrating the electromagnetic wave of dried load of wedge shape or water load, can be absorbed electromagnetic material by force and be absorbed in a large number, do not had electromagnetic wave, eliminated electromagnetic pollution from metal-sheet edges direction effusion waveguide
Four, description of drawings
Fig. 1 is a high power circular recess wave guide end view of the present invention.Insulation strip 1 is wherein arranged; Metal plate 2,5; Wedge shape matched load 3, wedge end 31, bolt 4.Metal plate width W, metal plate height H; The high W of wedge end
3The high W of wedge base
2The high W of insulation strip
1The wide H of wedge end
2Wedge end both sides wedge base hem width H
3
Fig. 2 is the structural representation that wedge shape coupling is done load.Fig. 3 does the match structural representation of the insulation strip used of load with wedge shape coupling.
Fig. 4 is the structural representation of wedge shape coupling water load.Fig. 5 is the structural representation of the insulation strip used of matching with wedge shape coupling water load.
Five, embodiment
High power circular recess wave guide of the present invention, comprise insulation strip, metal plate, bolt, it is characterized in that the both sides insulation strip 1 between two metal plates 2,5 of circular recess wave guide is other, also be respectively equipped with wedge shape matched load 3, towards the interior space of circular recess wave guide, the length of wedge is the integral multiple of employed electromagnetic wave work half-wavelength to the wedge end 31 of this two wedges shape matched load 3 along the axis direction of circular recess wave guide.
Structure as shown in Figure 1, promptly get two rectangular flat metal plate 2 that finished size is identical earlier, 5, material can adopt steel, brass, good conductors such as alloy aluminum, dull and stereotyped length can be decided according to the actual requirements, as long as processing technology is done and is obtained, dull and stereotyped width W is relevant with the operation wavelength λ of transmission with height H, W=9.3 λ～60 λ, H=0.6 λ～41.6 λ, λ is a free space wavelength, the edge on metal plate two limits is fixing with bolt 4, on the circular recess wave guide end face, the below is that middle the heart channel of Hang-Shaoyin is along its length on (being the axis direction of circular port) with the boundary line of two plane contact, respectively mill a wide (W of being down
1+ W
2)=0.15 λ～15 λ, height is H=H
2+ 2H
3The elongated slot of=0.4 λ～21.6 λ, the same circular recess wave guide of length, wherein W
1=0.1 λ～10 λ,
H
2＝0.2λ～1.6λ，H
3＝0.1λ～10λ。As shown in Figure 1, then in the end face symmetrical centre, along its length, through hole of boring, the diameter d in hole=0.62 λ～2.02 λ.Bolt 4 is folded down, and the every side that metal plate is porose mills H
2/ 2 height, two metal plates after processing like this.
Wedge shape matched load is to be used for absorbing the electromagnetic critical component that arrives the metal plate edge, and it is divided into does load and two kinds of water loads, and dried load is transmitted low power situation with what, and it absorbs electromagnetic solid-state material with graphite or other and makes; Water load is used for transmission, powerful situation, and it is blow molded into required wedge shape with quartz glass, has the inlet tube and outlet tube can be with flowing water, and matched load is identical with circular recess wave guide in the length of axis direction, wedge W partly
3=0.5 λ～4 λ.
Wedge shape matched load 3 can be made an overall structure, also can be horizontally divided into independently multistage, or makes the madial wall of independently sub-one by one cone distribution what medium strip.
Insulation strip 1 is used for separating metallic plate 2 and metallic plate 5, and its length is identical with circular recess wave guide length, and material can be used insulating material such as bakelite, pottery, wherein is used for the insulation strip of water load, and the hole of two energy by inlet tube and outlet tube arranged.When wedge shape matched load 3 mated water load for wedge shape, its inlet tube and outlet tube will pass insulation strip 1 corresponding hole.
Know from electromagnetic theory, the electric field strength of main mould, be to be the index law attenuation distribution along metal plate edge direction (being vertical what round hole axial direction), its can be by the slit of the metal plate free space that bleeds, if the through-put power of main mould is very big, as multikilowatt, even it is bigger, the electromagnetic energy of that free space that do not bleed is very considerable, has surpassed the safety standard of regulation, and is all extremely harmful to electronic equipment to human body.The higher mode that produces owing to certain inhomogeneities also can be propagated (being vertical what round hole axial direction) to the metal plate edge direction in addition, and the effusion waveguide is when if the power capacity of transmission is very big, even higher mode, it with electromagnetic energy also considerable, harmful too
Circular recess wave guide originally, the inboard that separates the medium insulation strip that two metal plates use is the plane, this structure is called on electromagnetic theory and does not match, harmful electromagnetic pollution was caused in a part effusion waveguide freedom of entry space when fringing field of main mould or higher mode arrived the edge of metal plate, and the circular groove district of another part reflected back circular recess wave guide disturbs main die worker to do.
Claims (3)
1, a kind of high power circular recess wave guide, comprise insulation strip, metal plate, bolt, it is characterized in that the both sides insulation strip (1) between two metal plates (2,5) at circular recess wave guide is other, also be respectively equipped with wedge shape matched load (3), towards the interior space of circular recess wave guide, the length of wedge is the integral multiple of employed electromagnetic wave work half-wavelength to the wedge end (31) of this two wedges shape matched load (3) along the axis direction of circular recess wave guide.
2, high power circular recess wave guide according to claim 1 is characterized in that for low power circular recess wave guide, and wedge shape matched load (3) is to do load, makes with the solid material of graphite or other strong absorption microwave, millimeter wave, submillimeter wave.
3, high power circular recess wave guide according to claim 1, it is characterized in that the circular recess wave guide for middle and high power, wedge shape matched load (3) is a water load, is blow molded into required shape with quartz glass, and be provided with inlet tube and outlet tube, pass to flowing water through inlet tube and outlet tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03152934 CN1208869C (en) | 2003-09-04 | 2003-09-04 | High-power circular slot waveguide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03152934 CN1208869C (en) | 2003-09-04 | 2003-09-04 | High-power circular slot waveguide |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1487623A CN1487623A (en) | 2004-04-07 |
| CN1208869C true CN1208869C (en) | 2005-06-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03152934 Expired - Fee Related CN1208869C (en) | 2003-09-04 | 2003-09-04 | High-power circular slot waveguide |
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|---|---|
| CN (1) | CN1208869C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1300896C (en) * | 2004-09-27 | 2007-02-14 | 东南大学 | Circular recess wave guide chamber stable oscillator |
| CN102393512B (en) * | 2011-09-28 | 2013-01-23 | 中国电子科技集团公司第十研究所 | Single-antenna frequency-modulated continuous-wave radar radio frequency passive cancellation method |
-
2003
- 2003-09-04 CN CN 03152934 patent/CN1208869C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1487623A (en) | 2004-04-07 |
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Granted publication date: 20050629 Termination date: 20120904 |