CN108448218A - The coaxial conversion equipment of full bandwidth rectangular waveguide - Google Patents
The coaxial conversion equipment of full bandwidth rectangular waveguide Download PDFInfo
- Publication number
- CN108448218A CN108448218A CN201810386228.7A CN201810386228A CN108448218A CN 108448218 A CN108448218 A CN 108448218A CN 201810386228 A CN201810386228 A CN 201810386228A CN 108448218 A CN108448218 A CN 108448218A
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- probe
- rectangular waveguide
- wave conductor
- full bandwidth
- rectangular
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 20
- 239000000523 sample Substances 0.000 claims abstract description 39
- 239000004020 conductor Substances 0.000 claims abstract description 30
- 239000002184 metal Substances 0.000 claims abstract description 19
- 229910052751 metal Inorganic materials 0.000 claims abstract description 19
- 229910052755 nonmetal Inorganic materials 0.000 claims abstract description 15
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 6
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims abstract description 4
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 3
- 238000004891 communication Methods 0.000 abstract description 7
- 238000012545 processing Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000012546 transfer Methods 0.000 abstract description 4
- 238000003780 insertion Methods 0.000 abstract description 2
- 230000037431 insertion Effects 0.000 abstract description 2
- 238000000465 moulding Methods 0.000 abstract description 2
- 230000003595 spectral effect Effects 0.000 abstract 1
- 238000004088 simulation Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 150000001336 alkenes Chemical class 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000005404 monopole Effects 0.000 description 1
- 238000009428 plumbing Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/08—Coupling devices of the waveguide type for linking dissimilar lines or devices
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- Waveguide Aerials (AREA)
Abstract
The invention discloses a kind of coaxial conversion equipments of full bandwidth rectangular waveguide, including rectangular wave conductor, rectangular wave conductor front end has opening, it is cut-off wall below, it is additionally provided with coaxial connector, the metal inner shaft of the coaxial connector is connected to the metal probe in rectangular waveguide body from rectangular wave conductor bottom outside, and nonmetal medium layer is coated on the outside of the probe, and nonmetal medium layer material is polytetrafluoroethylene (PTFE)；The metallic object with bottom wall of inner cavity vertical connection is additionally provided in the cavity of the rectangular wave conductor, the metallic object is located at the front side of probe.The present invention is greatly lowered in the wide reflectance factor of all-wave conduction band, effectively reduce insertion loss, improve transfer efficiency, effect stability, and because its is simple in structure, processing, molding are more prone to, can be in a standardized way, with the spectral range of full bandwidth, it is widely used in the rectangular waveguide wave duct technology in microwave communication field.
Description
Technical field
The present invention relates to the coaxial conversion equipments of rectangular waveguide in a kind of microwave communication field.
Background technology
Waveguide is widely used in field of microwave communication, according to the difference of its cross sectional shape, can be divided into rectangular waveguide, round wave
It leads, double ridged waveguide, elliptical waveguide.There is the characteristic that electromagnetic wave shielding is good, loss is low in view of waveguide, therefore be often applied to long distance
From microwave transport equipment.And rectangular waveguide is even more widely used in satellite communication since its is simple in structure.It is done with anti-in interference
In the equipment for disturbing the communications field, often using rectangular waveguide as input/output end port, and the feed cable in Practical Project and vector
Analyzer, spectrum analyzer, power amplifier etc. are also then using coaxial line as input/output end port.The same shaft rotation of rectangular waveguide
Parallel operation is as coaxial line（TEM moulds）To rectangular waveguide（TE moulds）Conversion equipment, be widely used in plumbing.
Since wave guide communication is often used in high frequency hyperfrequency field, cavity size is generally only grade, therefore sets
Meter is simple, conducive to making rectangular waveguide coaxial converter by widespread demand.But rectangular waveguide coaxial converter is because of reflection
Number is high, causes insertion loss excessive, and rectangular waveguide converter is difficult interior to realize low reflectance factor all-wave conduction band is wide.If it is
It reduces reflectance factor and increases complicated internal structure, manufacture difficulty will be increased.
Currently, the coaxial conversion equipment of rectangular waveguide can be divided into coaxial spy according to the difference of its wave-guide cavity wave internal structure
Needle waveguide switch, double ridge rectangular waveguide converters, microstrip waveguide converter etc..Wherein, coaxial probe waveguide switch and
Double ridge rectangular waveguide converters have the characteristics that full bandwidth reflection coefficient is high, and microstrip waveguide converter then has frequency band
Width, the characteristics of cannot achieve entirely with low reflectance factor.
In the prior art, to reduce reflectance factor, the technological means of extension frequency bandwidth, use mainly has：Coaxial line is visited
Tuning screws are added in overstriking or addition disk at the top of needle, inside cavity many places, and inside cavity filled media or addition coaxial line are situated between
Matter housing and ladder-like wall body structure etc..But since design is complicated, difficulty is made, and frequency bandwidth spreading range is narrow,
It is only applicable to standard waveguide（Waveguide openings length-width ratio is 2:1）, cannot be used widely.
Invention content
The present invention proposes the coaxial conversion equipment of full bandwidth rectangular waveguide, its object is to：Reflectance factor is reduced, in waveguide
Full bandwidth obtains better reflectance factor characteristic, reduces loss, improves its transfer efficiency, and its structure is made to be easier to be fabricated to
Type.
Technical solution of the present invention is as follows：
The coaxial conversion equipment of full bandwidth rectangular waveguide, including rectangular wave conductor, rectangular wave conductor front end have opening, behind
To end wall, it is additionally provided with coaxial connector, the metal inner shaft of the coaxial connector is connected to from rectangular wave conductor bottom outside
Metal probe in rectangular waveguide body, the probe outside are coated with nonmetal medium layer；
The metallic object with bottom wall of inner cavity vertical connection is additionally provided in the cavity of the rectangular wave conductor, the metallic object is located at probe
Front side.
As being further improved for the present apparatus：The center of the metallic object biases relative to probe and sets in the lateral direction
It sets.
As being further improved for the present apparatus：The nonmetal medium layer is evenly coated at probe periphery.
As being further improved for the present apparatus：The nonmetal medium layer material for being coated on probe periphery is polytetrafluoroethyl-ne
Alkene.
As being further improved for the present apparatus：The metallic object is cuboid.
As being further improved for the present apparatus：The metallic object is cuboid, and the center of the cuboid is with probe front and back
Distance on direction is 0.1~0.14 wavelength, with probe in the lateral direction at a distance from be 0.06~0.14 wavelength, it is described rectangular
The length of body in the lateral direction is 0.125~0.26 wavelength, and thickness in the longitudinal direction is 0.038~0.085 wavelength, high
Degree is 0.042~0.067 wavelength.
As being further improved for the present apparatus：The inner section width of the rectangular wave conductor is 149.9/fc, and fc is rectangle
The cutoff frequency of waveguide, the inner section height of rectangular wave conductor is less than or equal to 0.7 times of cross-sectional width in rectangular waveguide body, described
Inner section refers to rectangular waveguide intracoelomic cavity in the section in plane in the front-back direction.
As being further improved for the present apparatus：The probe is located on front side of cut-off wall at 1/4 wavelength.
Compared with the existing technology, the present invention has the positive effect that：On the basis of increasing nonmetal medium layer, in wave
It leads inner wall bottom and increases metal derby, the coaxial conversion equipment of rectangular waveguide is greatly lowered in the wide reflectance factor of all-wave conduction band, has
Matching impedance is imitated, improves transfer efficiency, effect stability, and because its probe and 50 ohm of nonmetal medium layer structure and standard are same
Mandrel connector connects, and probe uniformly coats dielectric layer, and acquisition actual measurement bandwidth is wider, simple in structure, and processing, molding are more prone to,
Can in a standardized way, with the frequency range of full bandwidth, the rectangular waveguide technology being widely used in microwave communication field
In.
Description of the drawings
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the schematic top plan view of Fig. 1.
Fig. 3 is the comparison diagram of simulation result in embodiment.
Fig. 4 is the comparison diagram of simulation result and test result after finished product processing in embodiment.
Specific implementation mode
The technical solution that the invention will now be described in detail with reference to the accompanying drawings：
Such as Fig. 1 and 2, a kind of coaxial conversion equipment of full bandwidth rectangular waveguide can be applied to rectangular wave conductor 1, the rectangular wave
1 front end of conductor have opening 7, behind for cut-off wall 6, make electromagnetic wave can only to opening 7 directions be propagated.
The art of this patent can be applied in the rectangular wave conductor 1 that the cross-sectional width is 149.9/fc（Fc is rectangular waveguide
Cutoff frequency）, the inner section height of rectangular wave conductor 1 is less than or equal to 0.7 times of 1 inner section width of rectangular wave conductor, described
Inner section refers to 1 inner cavity of rectangular wave conductor in the section in plane in the front-back direction.Preferably, the rectangular wave conductor
1 is 0.5 times of the standard waveguide that inner section height is 1 inner section width of rectangular wave conductor.
The present apparatus is additionally provided with coaxial connector 3, and the metal inner shaft of the coaxial connector 3 is outside 1 bottom of rectangular wave conductor
Side is connected with metal probe 2 in rectangular wave conductor 1.The probe 2 is located at 6 about 1/4 wavelength of front side of cut-off wall.The metal
Probe 2 can be considered that small-sized monopole antenna, size are designed according to rectangular waveguide depth of section, motivate the electromagnetism of TE patterns
Wave.
2 outside of the probe is coated with nonmetal medium layer 4；Preferably, which is uniformly coated on spy
2 periphery of needle, material are polytetrafluoroethylene (PTFE), for reducing the equiva lent impedance of rectangular waveguide, make the anti-of rectangular waveguide coaxial converter
Coefficient is penetrated to decrease.
It is additionally provided in the cavity of the rectangular wave conductor 1 and the metallic object of bottom wall of inner cavity vertical connection 5, the metallic object 5
Positioned at the front side of probe 2.Preferably, the center of the metallic object 5 biases setting relative to probe 2 in the lateral direction.Using
When, it can further match the impedance of rectangular waveguide by the size of micro adjusting metallic object 5 and the distance away from probe 2.
The metallic object 5 is cuboid.
It applies in standard waveguide, metallic object 5 is configured by the following size：The center of the cuboid is with probe 2 preceding
Distance in rear direction is preferably 0.138 wavelength, with probe 2 in the lateral direction at a distance from be preferably 0.117 wavelength, the length
The length of cube in the lateral direction is preferably 0.24 wavelength, and thickness in the longitudinal direction is preferably 0.0625 wavelength, height
Preferably 0.062 wavelength.
The technique effect of the present invention is verified using contrast experiment below.Software used by emulation is CST's
Microwave studio.By taking WR-75 standard waveguides as an example, respectively at different frequencies with following scheme test conversion device
Return loss：
A, conventional metals probe 2 is only used, nonmetal medium and metal derby are not provided with；
B, with 50 Europe coaxial connector metal probe 2 of standard, metal probe 2 is coated with nonmetal medium layer 4, is not provided with metal
Block；
C, optimal technical scheme using the present invention, the coated nonmetal medium layer 4 outside metal probe 2, while metal derby is set.
For three groups of obtained result curves as shown in figure 3, ordinate is return loss in figure, abscissa is frequency.
From the figure 3, it may be seen that in the case where coaxial line only connects metal probe 2, full bandwidth（10GHz-15GHz）Return loss
For -14.5dB.Behind coated nonmetal medium layer 4 outside metal probe 2, return loss can be reduced to -18dB；And it is special when this is added
After the metal derby of profit, return loss can reach -21.5dB, by calculating it is found that reflectance factor is less than 10% at this time.
As shown in figure 4, solid line is simulation result, dotted line is finished product for the comparison of test result after simulation result is processed with finished product
Test result after processing.Due to difficulty of processing and precision, actual processing test result often compares many scheme of the invention
Simulation result wants poor.And in the technical program embodiment, within the scope of simulation result display frequency bandwidth 9.75GHz~15.2GHz,
Return loss is less than -20dB, and test result is shown within the scope of 8.78GHz~15.75GHz, and return loss is less than -20dB.It is real
Border measures frequency bandwidth and increases 1.5GHz than analog result.
It can be seen that after taken above two measures, the coaxial conversion equipment of rectangular waveguide can be made to reflect system in full bandwidth
Number is reduced to superior level, while reducing the loss of rectangular waveguide coaxial converter, improves its transfer efficiency, and the letter of its structure
It is single, it is easily processed into type.Can further it deduce, when structure involved in the present invention is applied to other sizes waveguide, it is also possible to obtain
Similar technique effect.
Claims (8)
1. the coaxial conversion equipment of full bandwidth rectangular waveguide, including rectangular wave conductor（1）, the rectangular wave conductor（1）Front end has
Opening（7）, behind for cut-off wall（6）, it is characterised in that：It is additionally provided with coaxial connector（3）, the coaxial connector（3）Gold
Belong to inner shaft from rectangular wave conductor（1）Bottom outside is connected to rectangular wave conductor（1）Interior metal probe（2）, the probe（2）Outside
Side is coated with nonmetal medium layer（4）；
The rectangular wave conductor（1）Cavity in be additionally provided with metallic object with bottom wall of inner cavity vertical connection（5）, the metallic object
（5）Positioned at probe（2）Front side.
2. the coaxial conversion equipment of full bandwidth rectangular waveguide as described in claim 1, it is characterised in that：The metallic object（5）'s
Center is relative to probe（2）Biasing setting in the lateral direction.
3. the coaxial conversion equipment of full bandwidth rectangular waveguide as described in claim 1, it is characterised in that：The nonmetal medium layer
（4）It is evenly coated at probe（2）Periphery.
4. the coaxial conversion equipment of full bandwidth rectangular waveguide as described in claim 1, it is characterised in that：It is described to be coated on probe
（2）The nonmetal medium layer on periphery（4）Material is polytetrafluoroethylene (PTFE).
5. the coaxial conversion equipment of full bandwidth rectangular waveguide as described in claim 1, it is characterised in that：The metallic object（5）For
Cuboid.
6. the coaxial conversion equipment of full bandwidth rectangular waveguide as described in claim 1, it is characterised in that：The metallic object（5）For
Cuboid, the center of the cuboid and probe（2）Distance in the longitudinal direction is 0.1~0.14 wavelength, with probe（2）On a left side
Distance in right direction is 0.06~0.14 wavelength, and the length of the cuboid in the lateral direction is 0.125~0.26 wavelength,
Thickness in the longitudinal direction is 0.038~0.085 wavelength, is highly 0.042~0.067 wavelength.
7. the coaxial conversion equipment of full bandwidth rectangular waveguide as described in claim 1, it is characterised in that：The rectangular wave conductor
（1）Inner section width be 149.9/fc, fc be rectangular waveguide cutoff frequency, rectangular wave conductor（1）Inner section height it is small
In equal to rectangular wave conductor（1）0.7 times of inner section width, the inner section refer to rectangular wave conductor（1）Inner cavity perpendicular to
Section in plane in the front-back direction.
8. the coaxial conversion equipment of full bandwidth rectangular waveguide as described in claim 1 to 7 is any, it is characterised in that：The probe
（2）Positioned at cut-off wall（6）At 1/4 wavelength of front side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810386228.7A CN108448218B (en) | 2018-04-26 | 2018-04-26 | Full bandwidth rectangular waveguide coaxial conversion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810386228.7A CN108448218B (en) | 2018-04-26 | 2018-04-26 | Full bandwidth rectangular waveguide coaxial conversion device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108448218A true CN108448218A (en) | 2018-08-24 |
| CN108448218B CN108448218B (en) | 2024-01-26 |
Family
ID=63201603
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810386228.7A Active CN108448218B (en) | 2018-04-26 | 2018-04-26 | Full bandwidth rectangular waveguide coaxial conversion device |
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| Country | Link |
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| CN (1) | CN108448218B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110739515A (en) * | 2019-10-12 | 2020-01-31 | 南京理工大学 | Ku waveband coaxial-to-rectangular waveguide transition converter |
| CN111200194A (en) * | 2018-11-20 | 2020-05-26 | 成都海澳科技有限公司 | Area antenna array composed of novel monopole antenna |
| CN111200192A (en) * | 2018-11-20 | 2020-05-26 | 成都海澳科技有限公司 | Orthogonal antenna array and composite antenna array formed by novel monopole antennas |
| CN111200193A (en) * | 2018-11-20 | 2020-05-26 | 成都海澳科技有限公司 | Collinear antenna array composed of novel monopole antennas and composite antenna array |
| CN112886169A (en) * | 2021-03-29 | 2021-06-01 | 电子科技大学 | Rectangular waveguide-to-coaxial converter |
| CN114464976A (en) * | 2022-03-10 | 2022-05-10 | 航天恒星科技有限公司 | Ku frequency band microstrip waveguide conversion device |
| US11469484B2 (en) | 2019-12-31 | 2022-10-11 | Industrial Technology Research Institute | Circuit structure |
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| RU2652101C1 (en) * | 2017-03-20 | 2018-04-25 | Федеральное казенное предприятие "Научно-производственный центр "Дельта" (ФКП "НПЦ "Дельта") | Device for electromagnetic shielding of contact connection of housings of radioelectronic equipment |
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2018
- 2018-04-26 CN CN201810386228.7A patent/CN108448218B/en active Active
Patent Citations (4)
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| JP2006279473A (en) * | 2005-03-29 | 2006-10-12 | Kyocera Corp | High-frequency line/waveguide converter |
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| RU2652101C1 (en) * | 2017-03-20 | 2018-04-25 | Федеральное казенное предприятие "Научно-производственный центр "Дельта" (ФКП "НПЦ "Дельта") | Device for electromagnetic shielding of contact connection of housings of radioelectronic equipment |
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Non-Patent Citations (1)
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111200194A (en) * | 2018-11-20 | 2020-05-26 | 成都海澳科技有限公司 | Area antenna array composed of novel monopole antenna |
| CN111200192A (en) * | 2018-11-20 | 2020-05-26 | 成都海澳科技有限公司 | Orthogonal antenna array and composite antenna array formed by novel monopole antennas |
| CN111200193A (en) * | 2018-11-20 | 2020-05-26 | 成都海澳科技有限公司 | Collinear antenna array composed of novel monopole antennas and composite antenna array |
| CN110739515A (en) * | 2019-10-12 | 2020-01-31 | 南京理工大学 | Ku waveband coaxial-to-rectangular waveguide transition converter |
| US11469484B2 (en) | 2019-12-31 | 2022-10-11 | Industrial Technology Research Institute | Circuit structure |
| CN112886169A (en) * | 2021-03-29 | 2021-06-01 | 电子科技大学 | Rectangular waveguide-to-coaxial converter |
| CN114464976A (en) * | 2022-03-10 | 2022-05-10 | 航天恒星科技有限公司 | Ku frequency band microstrip waveguide conversion device |
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| Publication number | Publication date |
|---|---|
| CN108448218B (en) | 2024-01-26 |
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