CN106981709A - A kind of large power waveguide load based on electromagnetism Meta Materials - Google Patents
A kind of large power waveguide load based on electromagnetism Meta Materials Download PDFInfo
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- CN106981709A CN106981709A CN201710335979.1A CN201710335979A CN106981709A CN 106981709 A CN106981709 A CN 106981709A CN 201710335979 A CN201710335979 A CN 201710335979A CN 106981709 A CN106981709 A CN 106981709A
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- waveguide
- meta materials
- large power
- shaped cavity
- load
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/24—Terminating devices
- H01P1/26—Dissipative terminations
- H01P1/264—Waveguide terminations
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Abstract
The present invention relates to a kind of large power waveguide load based on electromagnetism Meta Materials, including for transmitting the waveguide of microwave signal and the absorber in waveguide, the waveguide end is closed provided with opening, one end, one end provided with opening is provided with ring flange, there is v-shaped cavity in the waveguide, the two sides of the v-shaped cavity extend and intersected on the end face of the waveguide other end from two opposite side of the opening to the waveguide other end respectively, and the angle of the v-shaped cavity is θ, 0 ° of ＜ θ≤30 °；The absorber is located on the inwall of v-shaped cavity, and the absorber is constituted for Meta Materials.The present invention in waveguide by setting v-shaped cavity, and it is used as absorbing material in v-shaped cavity inwall soldering Meta Materials, on the one hand the volume of waveguide load is reduced, the electromagnetic energy propagated in waveguide fully coupled, absorbed with electromagnetism Meta Materials, energy reflection is reduced.
Description
Technical field
The present invention relates to a kind of waveguide load, and in particular to a kind of large power waveguide load based on electromagnetism Meta Materials.
Background technology
Waveguide load be in microwave regime through commonly used microwave component, matched load be most common of which element it
One, it be it is a kind of almost can all absorb the single port element of input power, be usually by one section of waveguide and microwave can be absorbed
The combination of materials of power is formed, and it is while realizing that traveling-wave mode is presented in a system part, and absorbable useless signal.
In communication system and microwave measurement system, it is often necessary to which matched load sets up the traveling-wave mode of system.Also one kind is with matching
The similar mismatched load of support structures, simply size slightly change, it can absorb a part of microwave power and can reflect
A part of microwave power, is allowed to and former Transmission system mismatch, and the element is also mainly used in microwave measurement.
Both waveguide loads are typically used as suction ripple material using ferrite, barium titanate, carborundum, graphite, conductive fiber etc.
Material absorbs microwave energy.But these materials have the shortcomings that density height, absorption band width, absorptivity are low, have impact on the property of equipment
Energy.
The content of the invention
In order to solve the above problems, the invention provides a kind of large power waveguide load based on electromagnetism Meta Materials, this is born
Carry using artificial electromagnetism Meta Materials as absorbing material, with absorbing, strong, bandwidth, light weight, cost are low and easy to process
Advantage.
The present invention is adopted the following technical scheme that：
A kind of large power waveguide load based on electromagnetism Meta Materials, including for transmitting the waveguide of microwave signal and positioned at ripple
Interior absorber is led, the waveguide end is closed provided with opening, one end, and one end provided with opening is provided with ring flange, the ripple
There is v-shaped cavity, the two sides of the v-shaped cavity extend and intersected at from two opposite side of the opening to the waveguide other end respectively in leading
On the end face of the waveguide other end；The absorber is located on the inwall of v-shaped cavity.
Further, the angle of the v-shaped cavity is θ, 0 ° of ＜ θ≤30 °.
Further, the absorber is by dielectric layer and is attached on the dielectric layer in the more personal of periodic arrangement
The metamaterial sheet of work micro-structural composition.
Further, the artificial micro-structure is the plane with certain topology or three-dimensional knot being made up of metal
Structure.
Further, the artificial micro-structure is circle, rectangle, square, hexagon, cross, S-shaped, spiral shape etc.
Shape.
Further, the dielectric layer is attached on the v-shaped cavity inwall of waveguide using soldering processes.
Further, the artificial micro-structure is formed by photoetching process, chemical method for etching or typography.
Further, the waveguide is made up of metal material.
Further, the dielectric layer is made up of FR4 or ceramics.
Further, the heat dissipating layer for radiating is additionally provided with outside the waveguide, the heat dissipating layer is laminated structure or water
Cold heat-removal modalities.
The present invention is used as absorbing material, a side by setting v-shaped cavity in waveguide, and in v-shaped cavity inwall soldering Meta Materials
Face reduces the volume of waveguide load, the electromagnetic energy propagated in waveguide fully coupled, inhaled with electromagnetism Meta Materials
Receive, reduce energy reflection.Using electromagnetism Meta Materials as absorbing material, compared with conventional absorbent material, with absorption by force, frequently
The low and easy to process advantage of bandwidth, light weight, cost.
Brief description of the drawings
The structural representation that Fig. 1 loads for the large power waveguide based on electromagnetism Meta Materials of one embodiment of the invention；
Fig. 2 be Fig. 1 shown in waveguide load in waveguide cut-away view；
Stickograms of the Fig. 3 for waveguide load of the invention in different frequency range；
The knot for the external cooling layer that Fig. 4 loads for the large power waveguide based on electromagnetism Meta Materials of another embodiment of the present invention
Structure schematic diagram.
Description of reference numerals：1-waveguide；11-go up wave conductor；12-lower wave conductor；2-ring flange；3-v-shaped cavity；4—
Dielectric layer；5-artificial micro-structure；6-heat dissipating layer.
Embodiment
Describe embodiments of the present invention in detail below with reference to embodiment, illustrated embodiment is served only for explaining this hair
It is bright, it is not intended to limit the scope of the present invention.
As illustrated in fig. 1 and 2, a kind of large power waveguide load based on electromagnetism Meta Materials, including for transmitting microwave signal
Waveguide 1 and the absorber in waveguide 1, described one end of waveguide 1 provided with opening, one end close, it is described opening be rectangle
Opening, one end provided with opening is provided with ring flange 2, and ring flange 2 welds together with waveguide 1, has V-arrangement in the waveguide 1
Chamber 3, the two sides of the v-shaped cavity 3 extend from two broadsides of the opening to the other end of waveguide 1 respectively and to intersect at waveguide 1 another
On the end face of one end, if the angle of the v-shaped cavity 3 is θ, 0 ° of ＜ θ≤30 °；The absorber is located on the inwall of v-shaped cavity 3.Tool
Body, the waveguide 1 is combined by upper wave conductor 11 and upper wave conductor 12, and the lower surface of the upper wave conductor 11 is oblique with one
Face, the upper surface of the upper wave conductor 12 has an inclined-plane, and upper wave conductor 11 and upper wave conductor 12 the button merga pass is located at
The screw at edge is fixedly connected to form the upper of the lower surface of the upper wave conductor 11 and the upper wave conductor 12 after waveguide 1, fastening
The v-shaped cavity 3 that surface is formed in waveguide 1, two inclined-planes constitute the two sides of v-shaped cavity 3, and one end of waveguide 1 is had opening, separately
Close one end.If the angle for the v-shaped cavity 3 that two inclined-planes are constituted is θ, 0 ° of ＜ θ≤30 °, θ size according to the bandwidth of absorbing load and
Performance requirement determines that bandwidth is wider, absorbability is stronger, it is desirable to which the length on inclined-plane is longer, and θ is smaller.The v-shaped cavity 3 is located at ripple
Lead 1 center, the upper wave conductor 11 and upper wave conductor 12 be symmetrical shape structure.One end that the waveguide 1 is open is provided with method
Blue disk 2 is conveniently relative with other microwave components to connect.The waveguide 1 is made up of metal, is specifically as follows that copper, aluminium, aluminium is silver-plated or copper
It is gold-plated, or other metals.In the present embodiment, waveguide 1 prepares material selection copper.On the inwall of the v-shaped cavity 3,
I.e. above soldering has absorber on the inclined-plane of the waveguide lower surface and inclined-plane of lower waveguide top surface.
The absorber is by dielectric layer 4 and is attached to multiple artificial micro- knots on the dielectric layer 4 in periodic arrangement
The metamaterial sheet that structure 5 is constituted.Specifically, Meta Materials, which are one kind periodic arrangements on medium substrate, has certain geometrical shape
Such as metal micro structure of artificial micro-structure 5 come the artificial composite material that is formed, we can utilize the geometric form of artificial micro-structure 5
Shape and size and arrangement mode change the relative dielectric constant and/or relative permeability of Meta Materials spatial points, produce it
Raw expected electromagnetic response, to control electromagnetic wave propagation.The dielectric layer 4 is FR4, ceramic material or other polyphosphazene polymers
Compound material is made, and the dielectric layer 4 is attached on the inwall of v-shaped cavity 3 of waveguide 1 using soldering processes.
The artificial micro-structure 5 is the plane or stereochemical structure with certain topology being made up of metal, and is passed through
Photoetching, etching or typography are attached on dielectric layer 4, and the artificial micro-structure 5 also uses gold, silver, copper or other metal structures
Into, in the present embodiment, the material selection copper of artificial micro-structure 5.The artificial micro-structure 5 is shaped as circle, rectangle, pros
The shapes such as shape, hexagon, cross, S-shaped, spiral shape, circular, because circular configuration is simple, be easy to process and emulation is set
Meter, and circular configuration is symmetrical, and insensitive to polarization of electromagnetic wave direction and incidence angle, in other words, electromagnetic wave can be to appoint
What polarised direction, incidence angle is relatively wide.
The size of the artificial micro-structure 5 can determine absorption frequency, and size diminishes, frequency rise；Frequency is lower, medium
Thickness is bigger.
The dielectric layer 4 for constituting Meta Materials is different with the material that artificial micro-structure 5 is used, dielectric constant and loss tangent
Difference, absorbent properties are just different, the size of absorbing load should respective change, such as dielectric layer 4 uses aluminium oxide ceramics, manually
Micro-structural 5 using gold, absorption band width, it is desirable to disk number it is many, the size of waveguide 1 is big.
The present invention is used as absorbing material, one by setting v-shaped cavity 3 in waveguide 1 in the inwall soldering Meta Materials of v-shaped cavity 3
Aspect reduces the volume of waveguide load, the electromagnetic energy propagated in waveguide 1 is fully coupled with electromagnetism Meta Materials,
Absorb, reduce energy reflection.Using electromagnetism Meta Materials as absorbing material, compared with conventional absorbent material, with absorb it is strong,
The low and easy to process advantage of bandwidth, light weight, cost.The present invention waveguide load through actual test, as shown in figure 3,
In the range of Ku wave bands 16-18GHz, reflectance factor S11 values are less than -20dB, i.e. input standing-wave ratio and are less than 1.2.It is worth mentioning
, because artificial electromagnetism Meta Materials have regulatable galvanomagnetic-effect, therefore form load can also meet other frequency ranges
Demand.
In another embodiment, it is described to dissipate as shown in figure 4, being additionally provided with the heat dissipating layer 6 for radiating outside the waveguide 1
Thermosphere 6 is laminated structure or water-cooling form.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (10)
1. a kind of large power waveguide load based on electromagnetism Meta Materials, including for transmitting the waveguide of microwave signal and positioned at waveguide
Interior absorber, the waveguide end is closed provided with opening, one end, and its one end provided with opening is provided with ring flange, its feature
It is there is v-shaped cavity, the two sides of the v-shaped cavity are respectively from two opposite side of the opening to the waveguide other end in the waveguide
Extend and intersect on the end face of the waveguide other end；The absorber is located on the inwall of v-shaped cavity.
2. the large power waveguide load according to claim 1 based on electromagnetism Meta Materials, it is characterised in that the v-shaped cavity
Angle be θ, 0 ° of ＜ θ≤30 °.
3. the large power waveguide load according to claim 1 based on electromagnetism Meta Materials, it is characterised in that the absorber
By dielectric layer and it is attached to the metamaterial sheet that constitutes of multiple artificial micro-structures on the dielectric layer in periodic arrangement.
4. the large power waveguide load according to claim 2 based on electromagnetism Meta Materials, it is characterised in that described artificial micro-
Structure is the plane or stereochemical structure with certain topology being made up of metal.
5. the large power waveguide load according to claim 3 based on electromagnetism Meta Materials, it is characterised in that described artificial micro-
Structure is shaped as circle, rectangle, square, hexagon, cross, S-shaped or spiral shape.
6. the load of the large power waveguide based on electromagnetism Meta Materials according to claim any one of 3-5, it is characterised in that institute
Dielectric layer is stated to be attached on the v-shaped cavity inwall of waveguide using soldering processes.
7. the load of the large power waveguide based on electromagnetism Meta Materials according to claim any one of 3-5, it is characterised in that institute
Artificial micro-structure is stated to be formed by photoetching process, chemical method for etching or typography.
8. the load of the large power waveguide based on electromagnetism Meta Materials according to claim any one of 1-5, it is characterised in that institute
Waveguide is stated to be made up of metal material.
9. the large power waveguide load according to claim 6 based on electromagnetism Meta Materials, it is characterised in that the dielectric layer
It is made up of FR4 or ceramics.
10. the load of the large power waveguide based on electromagnetism Meta Materials according to claim any one of 1-5, it is characterised in that
The heat dissipating layer for radiating is additionally provided with outside the waveguide, the heat dissipating layer is laminated structure or water-cooling form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710335979.1A CN106981709A (en) | 2017-05-12 | 2017-05-12 | A kind of large power waveguide load based on electromagnetism Meta Materials |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710335979.1A CN106981709A (en) | 2017-05-12 | 2017-05-12 | A kind of large power waveguide load based on electromagnetism Meta Materials |
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| CN106981709A true CN106981709A (en) | 2017-07-25 |
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| CN201710335979.1A Pending CN106981709A (en) | 2017-05-12 | 2017-05-12 | A kind of large power waveguide load based on electromagnetism Meta Materials |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107546449A (en) * | 2017-08-18 | 2018-01-05 | 电子科技大学 | A kind of novel high-power microwave and millimeter wave Wind-cooling type conical structure absorbs dry load |
| CN107546448A (en) * | 2017-08-03 | 2018-01-05 | 电子科技大学 | A kind of inclined-plane based on SIW transmission lines absorbs array-supported |
| CN110048203A (en) * | 2019-05-15 | 2019-07-23 | 上海传输线研究所（中国电子科技集团公司第二十三研究所） | A kind of elliptical waveguide load |
| CN110137648A (en) * | 2019-06-10 | 2019-08-16 | 北京无线电测量研究所 | A kind of microwave pad |
| CN110176661A (en) * | 2019-03-08 | 2019-08-27 | 四川大学 | A kind of novel microwave isolating device |
| CN113871828A (en) * | 2021-08-20 | 2021-12-31 | 北京无线电测量研究所 | Microwave load |
| WO2023097959A1 (en) * | 2021-12-01 | 2023-06-08 | 散裂中子源科学中心 | High-power ferrite load |
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| JP2008124629A (en) * | 2006-11-09 | 2008-05-29 | Shimada Phys & Chem Ind Co Ltd | Power terminator |
| CN102593562A (en) * | 2012-03-15 | 2012-07-18 | 电子科技大学 | Radiation type microwave rectangular waveguide attenuator |
| CN102809683A (en) * | 2011-06-29 | 2012-12-05 | 深圳光启高等理工研究院 | Electromagnetic wave sensor based on planar optical waveguide and metamaterial |
| CN204118228U (en) * | 2014-07-16 | 2015-01-21 | 中电科微波通信(上海)有限公司 | Waveguide termination |
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| JP2008124629A (en) * | 2006-11-09 | 2008-05-29 | Shimada Phys & Chem Ind Co Ltd | Power terminator |
| CN102809683A (en) * | 2011-06-29 | 2012-12-05 | 深圳光启高等理工研究院 | Electromagnetic wave sensor based on planar optical waveguide and metamaterial |
| CN102593562A (en) * | 2012-03-15 | 2012-07-18 | 电子科技大学 | Radiation type microwave rectangular waveguide attenuator |
| CN204118228U (en) * | 2014-07-16 | 2015-01-21 | 中电科微波通信(上海)有限公司 | Waveguide termination |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107546448A (en) * | 2017-08-03 | 2018-01-05 | 电子科技大学 | A kind of inclined-plane based on SIW transmission lines absorbs array-supported |
| CN107546448B (en) * | 2017-08-03 | 2019-11-05 | 电子科技大学 | A kind of inclined-plane absorption based on SIW transmission line is array-supported |
| CN107546449A (en) * | 2017-08-18 | 2018-01-05 | 电子科技大学 | A kind of novel high-power microwave and millimeter wave Wind-cooling type conical structure absorbs dry load |
| CN107546449B (en) * | 2017-08-18 | 2020-09-25 | 电子科技大学 | Novel high-power microwave millimeter wave air-cooled cone structure absorption dry load |
| CN110176661A (en) * | 2019-03-08 | 2019-08-27 | 四川大学 | A kind of novel microwave isolating device |
| CN110176661B (en) * | 2019-03-08 | 2020-09-04 | 四川大学 | Microwave isolator |
| CN110048203A (en) * | 2019-05-15 | 2019-07-23 | 上海传输线研究所（中国电子科技集团公司第二十三研究所） | A kind of elliptical waveguide load |
| CN110137648A (en) * | 2019-06-10 | 2019-08-16 | 北京无线电测量研究所 | A kind of microwave pad |
| CN110137648B (en) * | 2019-06-10 | 2021-07-27 | 北京无线电测量研究所 | Microwave load |
| CN113871828A (en) * | 2021-08-20 | 2021-12-31 | 北京无线电测量研究所 | Microwave load |
| CN113871828B (en) * | 2021-08-20 | 2022-09-23 | 北京无线电测量研究所 | Microwave load |
| WO2023097959A1 (en) * | 2021-12-01 | 2023-06-08 | 散裂中子源科学中心 | High-power ferrite load |
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Application publication date: 20170725 |
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