CN107946713A - A kind of built-in waveguide mode line mode converter of homogeneous metal cavity - Google Patents
A kind of built-in waveguide mode line mode converter of homogeneous metal cavity Download PDFInfo
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- CN107946713A CN107946713A CN201711027839.4A CN201711027839A CN107946713A CN 107946713 A CN107946713 A CN 107946713A CN 201711027839 A CN201711027839 A CN 201711027839A CN 107946713 A CN107946713 A CN 107946713A
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- 239000002184 metal Substances 0.000 title claims abstract description 53
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 53
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- 238000013461 design Methods 0.000 claims abstract description 16
- 230000005540 biological transmission Effects 0.000 claims abstract description 11
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- 239000012528 membrane Substances 0.000 claims description 7
- 230000008859 change Effects 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 claims description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 4
- 239000010931 gold Substances 0.000 claims description 4
- 229910052737 gold Inorganic materials 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 4
- 239000003989 dielectric material Substances 0.000 claims description 2
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- 238000006243 chemical reaction Methods 0.000 abstract description 18
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- 230000008901 benefit Effects 0.000 abstract description 3
- 230000005684 electric field Effects 0.000 description 8
- 238000012913 prioritisation Methods 0.000 description 7
- 230000001939 inductive effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000010146 3D printing Methods 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
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- 238000012546 transfer Methods 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
Classifications
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- 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
- H01P5/10—Coupling devices of the waveguide type for linking dissimilar lines or devices for coupling balanced lines or devices with unbalanced lines or devices
- H01P5/103—Hollow-waveguide/coaxial-line transitions
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Abstract
The present invention discloses a kind of built-in waveguide mode line mode converter of homogeneous metal cavity.Comprising a homogeneous metal cavity, determined on demand with uniform properties, cross section long side and broadside size along its length；Medium substrate one side for all-metal, is fitted closely with metal cavity, and another side is by Demand Design flat plane antenna and output transmission lines such as working band, radiation characteristics；The built-in wave filter of cavity or mode suppressor.Flat plane antenna is used for electromagnetic wave (waveguide mode) in receiving cavity, transforms it into the line mode in output transmission line；It is not coupled to the waveguide mode of flat plane antenna completely, is handled by the built-in wave filter of cavity or mode suppressor, so as to fulfill the completely built-in mode converter of uniform cavity.The present invention has the advantages that circuit structure is compact, mode conversion efficiency is high, easily integrated with planar circuit, internals flexible transformation according to demand, suitable for high-frequency circuit system and active/passive energy collecting system.
Description
Technical field
The invention belongs to wireless communication, military radio and electronic equipment and device design field, available for high-frequency circuit
System, active/passive energy collecting system etc. design, and in particular to a kind of built-in waveguide mode of metal cavity-transmission line mould
Formula converter.
Background technology
With wireless communication, military radio and high frequency electronic equipment and with rapid changepl. never-ending changes and improvements, the electromagnetic spectrum money of device design
Source is increasingly crowded, and electromagnetic environment is increasingly complicated, therefore the frequency range of communication and design of electronic circuits is more and more to microwave, millimeter
Ripple, submillimeter wave, Terahertz etc. develop, the great variety thus with signals form, system and circuit composition etc..With
Past low-frequency range, lumped circuit, the integrated circuit based on planar medium substrate are relatively popular, and in high-frequency range,
Since dielectric loss, conductor losses etc. are to significant impact caused by circuit and system, particularly needed in some fields to sky
Between the electromagnetic wave situation that is received and handled, along with the rise of modern processing technique such as 3D printing technique, plane circuit
Just substituted more and more by cavity type circuit and device, such as spatial electromagnetic ripple is often received etc. using metal cavity.
However, plane circuit and device still have in the processing of signal, integrated etc. with available circuit and system it is certain
Advantage, such as the characteristic of electromagnetic wave signal is analyzed and post-processing, electromagnetic energy is acquired and is converted, after system
Situations such as continuous process circuit is plane form, in addition, can often be realized in planar circuit design using various technical measures
The high performance indicator such as miniaturization, wideband, multipolarization, therefore the waveguide mode in metal cavity in the urgent need to address and plane electricity
The pattern transfer problem of line mode in road.
At present for the research of waveguide mode-line mode converter, the main starting point is the conversion of pattern, therefore
General device architecture form is mainly mode conversion+mandatory boundary condition, or special using the natural high pass of metal cavity
Property, this also results in existing waveguide mode-two major features of the line mode converter on circuit form, first, there are humorous
Formula of shaking structure, second, the change of cavity body structure size, and the two features can be in circuit and the application of the wideband of system, the system integration
Property design etc. occasion bring limitation, how to be realized in homogeneous metal cavity high performance pattern change and improve its with it is preceding
The convenience and flexibility that end and subsequent conditioning circuit integrate, are a urgent problems to be solved.
In short, waveguide mode-line mode converter simple in structure, loss is low, pattern conversion performance is good is developed,
With very important Practical significance.
The content of the invention
Turn in view of the above-mentioned problems, the present invention proposes a kind of built-in waveguide mode-line mode of homogeneous metal cavity
Parallel operation.Using radiation/reception reciprocity property of flat plane antenna, design plane antenna is placed in metal cavity according to the actual requirements
It is interior, electromagnetic wave (waveguide mode) and it is converted into the line mode in output transmission line in receiving cavity；It is not complete in cavity
Unity couping is handled (reflection, and again to the waveguide mode field of flat plane antenna, by the built-in wave filter of cavity or mode suppressor
Secondary coupling is to antenna), so as to fulfill the completely built-in pattern conversion of uniform cavity.The converter inside component (flat plane antenna,
Wave filter) can (working band etc.) flexible transformation according to demand, meet high-frequency circuit system and active/passive energy collecting system
Etc. the work requirements of different application occasion.
The present invention can be achieved through the following technical solutions：
A kind of built-in waveguide mode of homogeneous metal cavity-line mode converter, comprising：One homogeneous metal cavity
1；One flat plane antenna 2, is built in metal cavity 1；One mode suppressor or wave filter 3.
As the further prioritization scheme of the present invention, the metal cavity 1 shape along its length and internal cavity
Without change (in addition to input and output waveguide end or the coaxial-waveguide converter that may be needed), length and width should be size
Can appropriate holding plane antenna 2 and waveguide filter or suppressor 3 and the minimum dimension for ensureing normal work.
As the further prioritization scheme of the present invention, the cross section long side and broadside size of the metal cavity 1 are according to reality
Border demand determines that the shape of cross section of metal cavity 1 can be rectangle, circle, ellipse or other shapes, and inside cavity is sky
Gas or Filled Dielectrics, its one end of the metal cavity 1 are used as the excitation of waveguide mode electromagnetic wave.
As the further prioritization scheme of the present invention, the flat plane antenna 2 for being used to receive waveguide mode electromagnetic wave can
Designed according to specific requirements (working band, antenna pattern etc.), for receiving 1 inner waveguide pattern electromagnetic wave of metal cavity, and
It is converted into line mode electromagnetic wave.
As the further prioritization scheme of the present invention, the flat plane antenna 2 for being used to receive waveguide mode electromagnetic wave can
Think the microstrip-fed type paster antenna of embodiment, the one side of medium substrate 2-1 for all-metal 2-2 and with metal cavity 1
Wall fits closely, and another side is by Demand Design patch shape 2-3 and microstrip line 2-4 such as working band, antenna patterns；Can also
The flat plane antenna of the other structures such as various improved forms or dipole antenna, Bow―tie antenna for paster antenna.
As the further prioritization scheme of the present invention, the flat plane antenna 2 for being used to receive waveguide mode electromagnetic wave, its
Placement location is decided by used radiation pattern, can abut 1 inner wall of metal cavity, can also be suspended in metal cavity 1
Middle part.
As the further prioritization scheme of the present invention, the wave filter or mode suppressor 3 are used to handle not quilt completely
The waveguide mode electromagnetic wave of reception, so as to fulfill the completely built-in mode converter of uniform cavity, its specific constructive form should
Can be with certain thickness gold according to specific requirements (associativity of working band and planar circuit, processing technology etc.) selection
Belong to diaphragm longitudinally loading or horizontal loading structure, can be the metallic membrane structure that the medium substrate of double-sided copper-clad etches, also can be
Equivalent metal diaphragm structure that inductive post is formed etc..
As the further prioritization scheme of the present invention, the wave filter or mode suppressor 3 and the connection of metal cavity 1
Mode, can be the Mulit-point Connection of definite shape metallic membrane, or the wire connection of medium substrate form metallic membrane.
Beneficial effect
1st, waveguide mode proposed by the present invention-line mode converter, has that circuit structure is compact, mode conversion efficiency
High, the advantages that easily being integrated with planar circuit.
2nd, waveguide mode proposed by the present invention-line mode converter, internals (flat plane antenna, wave filter) basis
The actual demand flexible transformations such as circuit structure, bandwidth of operation, pattern conversion coefficient, are beneficial to high-frequency circuit system and active/nothing
The structural improvement of source energy collecting system.
Brief description of the drawings
Fig. 1 be waveguide mode of the present invention-line mode converter stereogram (in figure Port1 and Port2 be for this
Invention waveguide mode converter design of Simulation and the input and output end face of test).
Fig. 2 be waveguide mode of the present invention-line mode converter cross-sectional view (in figure Port1 and Port2 be for
Waveguide mode converter design of Simulation of the present invention and the input and output end face of test).
Fig. 3 is the S parameter curve of waveguide mode of the present invention-line mode converter.
Fig. 4 is the input/output terminal electric field distribution schematic diagram of waveguide mode of the present invention-line mode converter embodiment,
Input terminal is distributed for the electric field of waveguide mode, and via the effect of mode converter, the electric field distribution of output terminal is mainly transmission line
Pattern, the amplitude of waveguide mode electric field strength are greatly reduced.
Specific embodiment
Technical scheme is described further with reference to the accompanying drawings and examples：
Control attached drawing 1, a kind of built-in waveguide mode of homogeneous metal cavity-line mode converter of the present invention, comprising：
One homogeneous metal cavity 1；One flat plane antenna 2, is built in metal cavity 1；One waveguide mode wave filter or pattern suppression
Device 3 processed.Wherein metal cavity 1 can be determined according to functional need, cross sectional dimensions once it is determined that, then with reference to the work of planar circuit 2
Make frequency range, you can mutually should determine that waveguide mode type therein；Flat plane antenna 2 is used for electromagnetic wave (wave guide mode in receiving cavity
Formula), and it is converted into the line mode in output transmission line；Waveguide filter or mode suppressor 3, it is not complete for handling
The waveguide mode field changed entirely, its concrete structure and complexity are decided by 2 type of flat plane antenna, mode converter operation frequency band
Deng.
Embodiment：
Compare attached drawing 1 and attached drawing 2, in above-mentioned waveguide mode-line mode converter, flat plane antenna and wave filter/
Mode suppressor structure can be selected flexibly according to the actual requirements.In the present embodiment, flat plane antenna selected as feed microstrip line
Paster antenna, mode suppressor selected as planar medium substrate combination plated-through hole (or inductive post loading) it is equivalent
Metallic membrane structure.
The concrete structure of whole waveguide mode-line mode converter includes：One homogeneous metal cavity 1；One flat
Surface antenna 2, a medium substrate 2-1 inside metal cavity, a surface of medium substrate 2-1 is all-metal floor 2-
2, and be close to cavity side broadside inner wall (opposite with wide wall where the link position of inductive post 3-3) and place, medium substrate
Another surface of 2-1 is metal micro-strip patch 2-3 and its output transmission line 2-4, and as other embodiment, flat plane antenna 2 can
To be designed as other structures according to actual demands such as working band, antenna patterns, include the various improved forms of paster antenna
(high-gain, broadband etc.) or dipole antenna, Bow―tie antenna etc., and its output transmission line can be microstrip line 2-4 or coplanar
The other forms such as waveguide, strip line；One waveguide filter or mode suppressor 3, the medium substrate 3-1 of a double-sided copper-clad,
Five or more than five plated-through hole (also can be inductive post) 3-2, medium substrate 3-1 both ends difference are distributed with thereon
It is connected with the both sides inner wall of metal cavity 1, separately there is the larger inductive post 3- of a length relative medium substrate 3-1 thickness
3, its one end is connected with a broadside inner wall of metal cavity 1, and the other end is connected with foregoing medium substrate 3-1 surfaces,
Tie point takes the centre position of medium substrate 3-1 and metal column 3-2.The thickness of medium substrate 2-1 and 3-1, dielectric constant and
Positioned at the parameter such as the form of metal of medium substrate surface and size, waveguide mode-line mode converter pair according to the present invention
The index demand of flat plane antenna 2 is set.
To realize conversion of the waveguide mode to line mode, it is thus necessary to determine that 2 structure of flat plane antenna and each structural parameters, filter
The structure and each parameter of ripple device or mode suppressor 3, including the size of patch, the strip width of output transmission line, medium substrate
Thickness, the diameter of plated-through hole, the diameter of inductive post and height etc..Each structural parameters of flat plane antenna 2 press converter
Working frequency and bandwidth determine that the size of output transmission line is determined according to the impedance matching requirements for connecting other circuits；Filtering
Each structure size of device or mode suppressor 3 can increase perception if necessary according to the working frequency and bandwidth Design of flat plane antenna 2
Metal column number or plated-through hole occupied area size, increase design freedom with this.Pair of wave filter or mode suppressor 3
The inhibitory action quality of waveguide mode field can largely effect on the performance of whole mode converter, pass through complex optimum flat plane antenna 2
And each structural parameters of mode suppressor 3, can be with the centre frequency of adjustment modes converter, pattern switching bandwith and conversion
Coefficient.
Shown in attached drawing 3 is the S parameter curve of waveguide mode of the present invention-line mode converter.It can be seen that pattern
The center operating frequency of converter is in 14.92GHz, due to the narrow-band characteristic of paster antenna, the mode conversion of the mode converter
Working band is also relatively narrow (14.77GHz~15.06GHz).On the frequency band, the waveguide mode return loss of Port1 end pumpings
Better than 10dB, due to the effect of Waveguide bandstop filter, the wave guide mode of the waveguide mode of Port1 end pumpings to Port2 end faces
Formula conversion coefficient is less than -27dB；Due to the collective effect of flat plane antenna and Waveguide bandstop filter, the ripple of Port1 end pumpings
The micro-strip ray mode conversion coefficient of waveguide mode to Port2 end faces is more than -1dB, in center frequency points close to 0dB, it is understood that there may be
Smaller loss has much relations with the basic loss characteristic of selected medium, therefore selects the good medium substrate of loss characteristic for this
The pattern conversion coefficient characteristic of embodiment is extremely important, in other embodiments according to suspension microband paste+suspended stripline
Design, then can further reduce dielectric loss；, can be as waveguide mode on Port2 end faces, the return loss of line mode
Above-mentioned working band reaches common engineering demand well.
Shown in attached drawing 4 is the input/output terminal electric field point of waveguide mode of the present invention-line mode converter embodiment
Cloth schematic diagram.Input terminal is distributed for the electric field of waveguide mode, and via the effect of mode converter, the electric field distribution of output terminal is main
For line mode, the amplitude of waveguide mode electric field strength is greatly reduced.That is, the mode converter of the present invention can be designed
Working band on, by the waveguide mode field transformation of input terminal feed-in be output terminal line mode field, in cavity size not
The pattern conversion performance of meet demand is obtained in the case of change.
In conclusion the built-in waveguide mode of uniform cavity-line mode converter of the present invention, can be in required frequency range
High-performance conversion of the upper realization from waveguide mode to line mode, and its structure type is more convenient with other planar circuit collection
Into being beneficial to miniaturization, the designs for high performance of modern high frequency circuit and device.Meanwhile the present invention in mode converter it is interior
Portion's component --- flat plane antenna and waveguide mode suppressor, according to the actual requirements can narrow frequency, double frequency, the pattern of multifrequency or wideband
Conversion performance, converter overall structure is simple, implementation is versatile and flexible, insertion loss is low, pattern conversion coefficient is high, Yi Yuping
Face circuit such as integrates at the good characteristics.
The above, is only the embodiment in the present invention, but protection scope of the present invention is not limited thereto, and is appointed
What be familiar with the people of the technology disclosed herein technical scope in, it will be appreciated that or the conversion or replacement expected, should all cover
Within the scope of the present invention, therefore, protection scope of the present invention should be subject to the protection domain of claims.
Claims (9)
1. a kind of built-in waveguide mode of homogeneous metal cavity-line mode converter, it is characterised in that include：One
Even metal cavity (1), is used as the excitation of waveguide mode electromagnetic wave with uniform properties, its one end along its length；One Jie
Matter substrate (2), its one side for all-metal and be bonded with metal cavity, another side is set by working band, antenna pattern demand
Flat plane antenna and output transmission line are counted, for receiving the electromagnetic wave of metal cavity inner waveguide pattern, and is converted into transmission line
Pattern electromagnetic wave；The built-in wave filter of cavity or mode suppressor (3), with dealing with the waveguide mode electromagnetism that is not received completely
Ripple, so as to fulfill the completely built-in mode converter of uniform cavity.
2. mode converter as claimed in claim 1, it is characterised in that the metal cavity (1) is in its longitudinal direction
Shape and internal cavity size do not change, in addition to input and output waveguide end or the coaxial-waveguide converter that may be needed,
The shape of cross section of metal cavity (1) can be rectangle, circle, ellipse or other shapes.
3. mode converter as claimed in claim 1, it is characterised in that the length and width of the metal cavity (1) should be
Energy holding plane antenna (2) and wave filter or mode suppressor (3), and ensure the minimum ruler of (2) and (3) normal operating conditions
Very little, it is air or Filled Dielectrics that cavity (1) is internal.
4. mode converter as claimed in claim 1, it is characterised in that described is used to receive the flat of waveguide mode electromagnetic wave
Surface antenna (2) is designed as the paster antenna of microstrip-fed type according to specific requirements, the one side of medium substrate for all-metal and with
Metal cavity (1) inner wall fits closely, and another side presses working band, antenna pattern Demand Design patch shape and microstrip line.
5. mode converter as claimed in claim 4, it is characterised in that the flat plane antenna (2) is designed as pasting according to demand
The various improved forms of chip antenna.
6. mode converter as claimed in claim 5, it is characterised in that the flat plane antenna (2) be improved to or various tools
The antenna of standby required performance, such as the element antenna or Bow―tie antenna or helical antenna of plane form.
7. mode converter as claimed in claim 1, it is characterised in that described is used to receive the flat of waveguide mode electromagnetic wave
Surface antenna (2), its placement location are decided by used radiation pattern, against metal cavity (1) inner wall, or are suspended in
In the middle part of metal cavity (1).
8. mode converter as claimed in claim 1, it is characterised in that the wave filter or mode suppressor (3) it is specific
Structure is selected such as working band, with the associativity of planar circuit, processing technology according to the actual requirements, for certain thickness gold
Belong to diaphragm longitudinally loading or horizontal loading structure, or the metallic membrane structure of the medium substrate etching of double-sided copper-clad, or perception gold
Belong to the equivalent metal diaphragm structure that column is formed.
9. mode converter as claimed in claim 1, it is characterised in that the wave filter or mode suppressor (3) and gold
Belong to the connection mode of cavity (1), be the Mulit-point Connection of definite shape metallic membrane, or be the line of medium substrate form metallic membrane
Shape connects.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711027839.4A CN107946713A (en) | 2017-10-28 | 2017-10-28 | A kind of built-in waveguide mode line mode converter of homogeneous metal cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711027839.4A CN107946713A (en) | 2017-10-28 | 2017-10-28 | A kind of built-in waveguide mode line mode converter of homogeneous metal cavity |
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| Publication Number | Publication Date |
|---|---|
| CN107946713A true CN107946713A (en) | 2018-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711027839.4A Pending CN107946713A (en) | 2017-10-28 | 2017-10-28 | A kind of built-in waveguide mode line mode converter of homogeneous metal cavity |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113454842A (en) * | 2019-05-10 | 2021-09-28 | 株式会社藤仓 | Mode converter |
| WO2023151552A1 (en) * | 2022-02-10 | 2023-08-17 | 华为技术有限公司 | Switching device, array switching device and communication device |
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| CN201699107U (en) * | 2010-02-02 | 2011-01-05 | 东南大学 | Compact type multi-level high order mode filter with rectangular overmode wave guider and H-shaped matrixes |
| CN204834816U (en) * | 2015-07-02 | 2015-12-02 | 安徽四创电子股份有限公司 | Millimeter waveguide microstrip conversion equipment |
| CN105932416A (en) * | 2016-06-07 | 2016-09-07 | 电子科技大学 | Ultra-wideband conformal end-fire antenna based on log periodic seam |
| CN205646074U (en) * | 2016-03-23 | 2016-10-12 | 中国科学院微电子研究所 | Probe type waveguide microstrip conversion device |
-
2017
- 2017-10-28 CN CN201711027839.4A patent/CN107946713A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201699107U (en) * | 2010-02-02 | 2011-01-05 | 东南大学 | Compact type multi-level high order mode filter with rectangular overmode wave guider and H-shaped matrixes |
| CN204834816U (en) * | 2015-07-02 | 2015-12-02 | 安徽四创电子股份有限公司 | Millimeter waveguide microstrip conversion equipment |
| CN205646074U (en) * | 2016-03-23 | 2016-10-12 | 中国科学院微电子研究所 | Probe type waveguide microstrip conversion device |
| CN105932416A (en) * | 2016-06-07 | 2016-09-07 | 电子科技大学 | Ultra-wideband conformal end-fire antenna based on log periodic seam |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113454842A (en) * | 2019-05-10 | 2021-09-28 | 株式会社藤仓 | Mode converter |
| US11843157B2 (en) | 2019-05-10 | 2023-12-12 | Fujikura Ltd. | Mode converter for converting modes between a post-wall waveguide and a microstrip line using an excitation pin and anti-pads |
| WO2023151552A1 (en) * | 2022-02-10 | 2023-08-17 | 华为技术有限公司 | Switching device, array switching device and communication device |
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