CN106992337A - A kind of Ka wave bands circular waveguide TE01 mode exciters - Google Patents
A kind of Ka wave bands circular waveguide TE01 mode exciters Download PDFInfo
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- CN106992337A CN106992337A CN201710258286.7A CN201710258286A CN106992337A CN 106992337 A CN106992337 A CN 106992337A CN 201710258286 A CN201710258286 A CN 201710258286A CN 106992337 A CN106992337 A CN 106992337A
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- waveguide
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- circular waveguide
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/16—Auxiliary devices for mode selection, e.g. mode suppression or mode promotion; for mode conversion
- H01P1/163—Auxiliary devices for mode selection, e.g. mode suppression or mode promotion; for mode conversion specifically adapted for selection or promotion of the TE01 circular-electric mode
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Abstract
The present invention discloses a kind of Ka wave bands circular waveguide TE01 mode exciters, is made up of orthogonal waveguide, rectangular step waveguide, uniform square wave guide, bone shape step waveguide and uniform circular waveguide.The input port of a port rock mechanism driver of orthogonal waveguide；The another port of the orthogonal waveguide port less than normal with the size of rectangular step waveguide is connected, and the port that the size of rectangular step waveguide is bigger than normal is connected with a port of uniform square wave guide；The port that another port of uniform square wave guide is less than normal with the size of bone shape step waveguide is connected, and the port that the size of bone shape step waveguide is bigger than normal is connected with a port of uniform circular waveguide, the output port of another port rock mechanism driver of uniform circular waveguide.The present invention has high conversion efficiency, height mode purity, compact conformation, easy to process and wide band feature.
Description
Technical field
The present invention relates to mode exciter technical field, and in particular to a kind of Ka wave bands circular waveguide TE01 mode exciters.
Background technology
According to circular waveguide TE01 patterns (Pattern) field structure distribution understand, it has following feature：(1) it is
Axisymmetric mode, in the absence of polarization degenerate mode；(2) transmission loss is low, and is improved with frequency, and loss declines on the contrary；(3) have less
Mode competition number, can be with the simplified mode conversion process.Due to above characteristic,Pattern is obtained in high-power pulsed ion beams
It is widely applied.Wherein,Pattern is just by the mode of operation as part gyrotron.Due to the work of convolution tube chamber output
Operation mode can not be used directly, thus the performance of system can not be carried out it is cold survey, such as the Q values and frequency to resonator, with
And the test of input window and output window transmission reflection characteristic etc., so generally requiring specific mode exciter to simulate gyrotron
Mode of operation, so as to test this radio frequency system.Nowadays various specific mode exciters obtain wide both at home and abroad
General research.
When mode exciter carries out experiment test, it is desirable to height mode conversion efficiency, height mode purity, compact conformation, Yi Jia
Work and broadband.At present,Mode exciter has fan pattern driver, sidewall coupling mode exciter, right-angled intersection pattern
Driver and H faces beam mode driver etc.."《Journal of Infrared,Millimeter,and Terahertz
Waves》, volume 26 the 19th phase, 1407-1415 pages in 2005 " and the fan pattern driver announced, the structure conversion efficiency
Relatively low, parasitic mode is more, complicated, it is difficult to realize, the general method using electroforming makes, and cost of manufacture is also high."《It is popular
Science and technology》, volume 15 162 phases, 1-3 pages in 2013 " and the sidewall coupling mode exciter announced, although its structural compactness is good,
High conversion efficiency and bandwidth, but be due to apply power division network, very high is required to technological level."《Vacuum science and skill
Art journal》, volume 33 the 4th phase, 309-314 pages in 2013 " in announce right-angled intersection mode exciter be in rectangular waveguide
TE10Mould is progressively changed into the TE of circular waveguide01Mould, though working band is wide, high conversion efficiency, the mode purity of output is high,
Model volume is larger, and is processed in the way of plating, so involving great expense."《Light laser and the particle beams》, 2014,
The H faces beam mode driver being previously mentioned in volume 26 the 6th phase, 114-118 pages ", the purity of the mode exciter 98% with
Upper and relative bandwidth of the conversion efficiency more than 95% is up to 4.2GHz, and the structure has compactedness good, conversion efficiency and purity
It is all higher, the advantages of frequency band is wider, but under general scenario, it is a kind of when the cross section of circular waveguide has oval small deformation
Circular waveguide wave mode will be split into two wave modes, so being processed for elliptical waveguide, required precision is higher.
The content of the invention
For existingMode exciter can not meet simultaneously high conversion efficiency and it is easy to process the problem of require there is provided
A kind of Ka wave bands circular waveguide TE01 mode exciters.
To solve the above problems, the present invention is achieved by the following technical solutions：
A kind of Ka wave bands circular waveguide TE01 mode exciters, the mode exciter is made up of following 5 parts：
Part I is that orthogonal waveguide is made up of 2 rectangular waveguides；This 2 rectangular waveguides include 1 front and rear insertion
Standard rectangular waveguide and 1 mistake mould rectangular waveguide；The a port for crossing mould rectangular waveguide is opened on its broad side surface, another end
Mouth is opened up on face in its back-end；Standard rectangular waveguide is vertically erected on the wide face in side of mould rectangular waveguide is crossed, and standard rectangular ripple
Port on the wide face in side of a port led with crossing mould rectangular waveguide connects；
Part II is that rectangular step waveguide is made up of 4 rectangular waveguides；This 4 rectangular waveguides are front and rear insertion
Standard rectangular waveguide；The size of this 4 rectangular waveguides is gradually changed, and port is end to end into stairstepping；
Part III is that uniform square wave guide is made up of 1 rectangular waveguide；The rectangular waveguide is the standard square of front and rear insertion
Shape waveguide；
Part IV is that bone shape step waveguide is made up of 9 bone shape waveguides；Insertion before and after this 9 bone shape waveguides；This 9
The size of bone shape waveguide is gradually changed, and port is end to end into stairstepping；
Part V is that uniform circular waveguide is made up of 1 circular waveguide；The circular waveguide is the standard round of front and rear insertion
Shape waveguide；The circular waveguide is built-in with pin；
The input port of a port rock mechanism driver of orthogonal waveguide；The another port of orthogonal waveguide and rectangle rank
The port connection less than normal of the size of terraced waveguide, the size of rectangular step waveguide port bigger than normal and a port of uniform square wave guide
Connection；The port that another port of uniform square wave guide is less than normal with the size of bone shape step waveguide is connected, bone shape step waveguide
Size port bigger than normal is connected with a port of uniform circular waveguide, another port rock mechanism driver of uniform circular waveguide
Output port.
In such scheme, the input of another port rock mechanism driver of the standard rectangular waveguide of orthogonal waveguide
Mouthful, the port that another port of mould rectangular waveguide excessively is less than normal with the size of rectangular step waveguide is connected.
In such scheme, the front end face closure for crossing mould rectangular waveguide of orthogonal waveguide, and form chamfering with narrow side.
In such scheme, the axis of the standard rectangular waveguide of orthogonal waveguide is intersected with crossing the axis of mould rectangular waveguide.
In such scheme, the corner of the side of 4 rectangular waveguides of rectangular step waveguide forms chamfering.
In such scheme, the length of 4 rectangular waveguides of rectangular step waveguide is 1/4 wavelength.
In such scheme, the corner of the side of the rectangular waveguide of uniform square wave guide forms chamfering.
In such scheme, the length of 9 bone shape waveguides of bone shape step waveguide is 1/4 wavelength.
In such scheme, the circular waveguide of uniform circular waveguide is built-in with 4 pins；One end of this 4 pins is embedded in
On the inwall of nicely rounded waveguide, the other end points to the axis of circular waveguide；During this 4 pins are on the axis of circular waveguide
The heart is symmetrical arranged.
In such scheme, 4 pins deviate 45 degree of the plane of symmetry.
Compared with prior art, the present invention has high conversion efficiency, height mode purity, compact conformation, easy to process and width
The characteristics of frequency band.
Brief description of the drawings
Fig. 1 is a kind of perspective cross-sectional schematic diagram of Ka wave bands circular waveguide TE01 mode exciters.
Fig. 2 is the rough schematic view of wave conductor.
Fig. 3 is the exploded perspective view of wave conductor.
Fig. 4 is the cross-sectional view of bone shape waveguide.
Fig. 5 is a kind of conversion efficiency figure of Ka wave bands circular waveguide TE01 mode exciters.
Fig. 6 is a kind of mode purity figure of Ka wave bands circular waveguide TE01 mode exciters.
Fig. 7 is a kind of return loss plot of Ka wave bands circular waveguide TE01 mode exciters.
Embodiment
A kind of Ka wave bands circular waveguide TE01 mode exciters, as Figure 1-3, the mode exciter is made up of 5 parts：
Part I is orthogonal waveguide, and Part II is rectangular step waveguide, and Part III is uniform square wave guide, and Part IV is bone shape
Step waveguide and Part V are uniform circular waveguide.
Part I is that orthogonal waveguide is made up of 2 rectangular waveguides.This 2 rectangular waveguides include 1 front and rear insertion
Standard rectangular waveguide and 1 mould rectangular waveguide 1-2 excessively.The a port for crossing mould rectangular waveguide 1-2 is opened on the wide face in its side, separately
A port is opened up on face in its back-end.Standard rectangular waveguide was vertically set on mould rectangular waveguide 1-2 broad side surface, orthogonal
Intersect with crossing mould rectangular waveguide 1-2 axis the axis of the standard rectangular waveguide of waveguide.One end of standard rectangular waveguide
Port on the wide face in side of the mouth with crossing mould rectangular waveguide 1-2 connects.Another port of standard rectangular waveguide forms orthogonal waveguide
A port, another port for crossing mould rectangular waveguide 1-2 forms another port of orthogonal waveguide.The mould excessively of orthogonal waveguide
Rectangular waveguide 1-2 front end face closure, and form chamfering with narrow side.To ensure compactedness, the length for crossing mould rectangle is 1-2
Individual wavelength.
Part II is that rectangular step waveguide is made up of 4 rectangular waveguide 2-1~2-4.This 4 rectangular waveguide 2-1~
2-4 is the standard rectangular waveguide of front and rear insertion, and the corner of this 4 rectangular waveguide 2-1~2-4 side forms chamfering.This 4
Individual rectangular waveguide 2-1~2-4 size is gradually changed, and port is end to end into stairstepping.This 4 rectangular step waveguide 2-1
~2-4 every segment length is 1/4 wavelength, so on the one hand can realize impedance matching, on the one hand can reduce the difficulty of processing
Spend and realize compact conformation.
Part III is that uniform square wave guide is made up of 1 rectangular waveguide 3-1.Rectangular waveguide 3-1 is front and rear insertion
Standard rectangular waveguide, the corner of rectangular waveguide 3-1 side forms chamfering.To ensure compactedness, rectangular waveguide 3-1 length
Spend for 1-2 wavelength.
Part IV is that bone shape step waveguide is made up of 9 bone shape waveguide 4-1~4-9.This 9 bone shape waveguide 4-1~
Insertion before and after 4-9.This 9 bone shape waveguide 4-1~4-9 sizes are gradually changed, and port is end to end into stairstepping.This 9 bones
Shape waveguide 4-1~4-9 every segment length is 1/4 wavelength, so on the one hand can realize impedance matching, on the one hand can reduce
The difficulty of processing and realize compact conformation.Fig. 4 is each bone shape waveguide 4-1~4-9 sectional view, and wherein a4 is bone shape waveguide ripple
Peak is away from b4 is bone shape waveguide trough away from r4 is chamfer radius.
Part V is that uniform circular waveguide is made up of 1 circular waveguide 5-1.Circular waveguide 5-1 is front and rear insertion
Standard circular waveguide 5-1.To ensure compactedness, circular waveguide 5-1 length is 1-2 wavelength.Built in circular waveguide 5-1
There are 4 pin 5-2.This 4 pin 5-2 one end is embedded on the inwall of uniform circular waveguide, and the other end points to circular waveguide 5-1
Axis；This 4 pin 5-2 are centrosymmetric setting on circular waveguide 5-1 axis, and 4 pin 5-2 deviate
45 degree of the plane of symmetry.Pin 5-2 length is the 54.6% of circular waveguide 5-1 inside radius.
The a port of orthogonal waveguide is the input of standard rectangular waveguide 1-1 another port rock mechanism driver
Mouthful.The another port of orthogonal waveguide was that the size of mould rectangular waveguide 1-2 another port and rectangular step waveguide is less than normal
Port is connected, and the port that the size of rectangular step waveguide is bigger than normal is connected with a port of uniform square wave guide.Uniform square wave guide
Another port port less than normal with the size of bone shape step waveguide is connected, the size of bone shape step waveguide port bigger than normal with
The a port connection of nicely rounded waveguide, the output port of another port rock mechanism driver of uniform circular waveguide.
The mode transition procedure of the mode exciter isWhereinProcess by
A part is completion in orthogonal waveguide, whenIt is symmetrical to cross mould ripple during junction from standard waveguide port transmission to overmoded waveguide
Lead equivalent to electric wall, can promoteIt also inhibits while excitationPropagation, and mode purity is very high.Pass through adjustment
The broadside of overmoded waveguide and the size on narrow side, can be with the performance of transformation；Two jiaos of one end of overmoded waveguide is carried out at chamfering
Reason, can reduce return loss.Wherein Process Part IV be bone shape step waveguide complete, this part is
UtilizeMould andThe structure that the electric force lines distribution characteristic Design of mould goes out, passes through well-regulated ladder bone shape waveguide, guidingMould is progressively crossfaded intoMould, it is possible to use simulation software is optimized to bone shape waveguide, is realizedHeight conversion.Swashing
Encourage outWhile, least a portion of parasitic mode can be carriedGeneration, in order to improve the purity of output mode, suppresses the defeated of parasitic mode
It is important to go out, and 4 queueing discipline pin 5-2 purpose is exactly this built in Part V.According toPower line point
Cloth characteristic and electric power characteristic boundary,The intensive place insertion pin 5-2 of electric force lines distribution or catch just can be with
Evade the formation of the pattern, so as to suppress the transmission of the pattern.
Fig. 5-7 is the conversion efficiency, mode purity and return loss plot of the mode exciter respectively.As can be seen from Figure 5,
The structure byWhat mould was motivatedThe conversion efficiency of mould is more than 96% in 31.75~37.28GHz, and bandwidth reaches
5.53GHz, as can be seen from Figure 6, outputMode purity is more than 98% in 31.91~37.19GHz, and bandwidth reaches
5.28GHz, as seen from Figure 7, when the main parasitic mode of output mode isWhen, return loss is small in 31.63~37.57GHz
In -15dB.
The requirement of high conversion efficiency and height mode purity can be met the invention provides a kind of, certain frequency band can be met again
The compactedness of width and easy processingMode exciter.
Claims (10)
1. a kind of Ka wave bands circular waveguide TE01 mode exciters, it is characterized in that, the mode exciter is made up of following 5 parts：
Part I is that orthogonal waveguide is made up of 2 rectangular waveguides；This 2 rectangular waveguides include the standard of 1 front and rear insertion
Rectangular waveguide (1-1) and 1 mistake mould rectangular waveguide (1-2)；The a port for crossing mould rectangular waveguide (1-2) is opened in its broad side surface
On, another port is opened up on face in its back-end；Standard rectangular waveguide (1-1), which is vertically erected, is crossing mould rectangular waveguide (1-2)
On the wide face in side, and the port phase on the wide face in side of a port of standard rectangular waveguide (1-1) with crossing mould rectangular waveguide (1-2)
Connect；
Part II is that rectangular step waveguide is made up of 4 rectangular waveguides (2-1~2-4)；This 4 rectangular waveguide (2-1~2-
4) be front and rear insertion standard rectangular waveguide；The size that this 4 square waves (2-1~2-4) are led is gradually changed, and port head and the tail
Mutually it is connected into stairstepping；
Part III is that uniform square wave guide is made up of 1 rectangular waveguide (3-1)；The rectangular waveguide (3-1) is front and rear insertion
Standard rectangular waveguide；
Part IV is that bone shape step waveguide is made up of 9 bone shape waveguides (4-1~4-9)；This 9 bone shape waveguide (4-1~4-
9) insertion before and after；The size of this 9 bone shape waveguides (4-1~4-9) is gradually changed, and port is end to end into stairstepping；
Part V is that uniform circular waveguide is made up of 1 circular waveguide (5-1)；The circular waveguide (5-1) is front and rear insertion
Standard circular waveguide (5-1)；The circular waveguide (5-1) is built-in with pin (5-2)；
The input port of a port rock mechanism driver of orthogonal waveguide；The another port of orthogonal waveguide and rectangular step ripple
The port connection less than normal of the size led, the size of rectangular step waveguide port bigger than normal and a port of uniform square wave guide connect
Connect；The port that another port of uniform square wave guide is less than normal with the size of bone shape step waveguide is connected, the chi of bone shape step waveguide
Very little port bigger than normal is connected with a port of uniform circular waveguide, another port rock mechanism driver of uniform circular waveguide
Output port.
2. a kind of Ka wave bands circular waveguide TE01 mode exciters according to claim 1, it is characterized in that, the mark of orthogonal waveguide
Quasi-retangular wave leads the input port of another port rock mechanism driver of (1-1), crosses mould rectangular waveguide (1-2) another
The port port less than normal with the size of rectangular step waveguide is connected.
3. a kind of Ka wave bands circular waveguide TE01 mode exciters according to claim 1 or 2, it is characterized in that, orthogonal waveguide
Cross mould rectangular waveguide (1-2) front end face closure, and with narrow side formed chamfering (1-3).
4. a kind of Ka wave bands circular waveguide TE01 mode exciters according to claim 1 or 2, it is characterized in that, orthogonal waveguide
Standard rectangular waveguide (1-1) axis with cross mould rectangular waveguide (1-2) axis intersect.
5. a kind of Ka wave bands circular waveguide TE01 mode exciters according to claim 1, it is characterized in that, rectangular step waveguide
The corners of side of 4 rectangular waveguides (2-1~2-4) be chamfering.
6. a kind of Ka wave bands circular waveguide TE01 mode exciters according to claim 1 or 5, it is characterized in that, rectangular step
The length of 4 rectangular waveguides (2-1~2-4) of waveguide is 1/4 wavelength.
7. a kind of Ka wave bands circular waveguide TE01 mode exciters according to claim 1, it is characterized in that, uniform square wave guide
The corner of the side of rectangular waveguide (3-1) is chamfering.
8. a kind of Ka wave bands circular waveguide TE01 mode exciters according to claim 1, it is characterized in that, bone shape step waveguide
The length of 9 bone shape waveguides (4-1~4-9) be 1/4 wavelength.
9. a kind of Ka wave bands circular waveguide TE01 mode exciters according to claim 1, it is characterized in that, uniform circular waveguide
Circular waveguide (5-1) is built-in with 4 pins (5-2)；One end of this 4 pins (5-2) is embedded on the inwall of uniform circular waveguide,
The other end points to the axis of circular waveguide (5-1)；This 4 pins (5-2) are in center on the axis of circular waveguide (5-1)
It is symmetrical arranged.
10. a kind of Ka wave bands circular waveguide TE01 mode exciters according to claim 9, it is characterized in that, 4 pin (5-
2) 45 degree of the plane of symmetry is deviateed.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115458881A (en) * | 2022-09-29 | 2022-12-09 | 电子科技大学 | Compact rectangular waveguide-circular waveguide mode converter |
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| US4772861A (en) * | 1987-03-16 | 1988-09-20 | Harris Corporation | TE20 rectangular to crossed TE20 rectangular mode converter for TE01 circular mode launcher |
| EP0343887A1 (en) * | 1988-05-21 | 1989-11-29 | THE GENERAL ELECTRIC COMPANY, p.l.c. | Waveguide apparatus |
| US5589807A (en) * | 1994-07-07 | 1996-12-31 | Com Dev. Ltd. | Multi-mode temperature compensated filters and a method of constructing and compensating therefor |
| CN105552483A (en) * | 2015-12-17 | 2016-05-04 | 电子科技大学 | TE<0>0n/TE<0>1n mode exciter |
| CN206961985U (en) * | 2017-04-19 | 2018-02-02 | 桂林电子科技大学 | A kind of Ka wave bands circular waveguide TE01 mode exciters |
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2017
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4772861A (en) * | 1987-03-16 | 1988-09-20 | Harris Corporation | TE20 rectangular to crossed TE20 rectangular mode converter for TE01 circular mode launcher |
| EP0343887A1 (en) * | 1988-05-21 | 1989-11-29 | THE GENERAL ELECTRIC COMPANY, p.l.c. | Waveguide apparatus |
| US5589807A (en) * | 1994-07-07 | 1996-12-31 | Com Dev. Ltd. | Multi-mode temperature compensated filters and a method of constructing and compensating therefor |
| CN105552483A (en) * | 2015-12-17 | 2016-05-04 | 电子科技大学 | TE<0>0n/TE<0>1n mode exciter |
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| 付华: "94GHz圆波导TE01模式激励器研究", 《现代电子技术》 * |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115458881A (en) * | 2022-09-29 | 2022-12-09 | 电子科技大学 | Compact rectangular waveguide-circular waveguide mode converter |
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Application publication date: 20170728 |