CN106299572A - A kind of novel waveguide polarization mode conversion diaphragm structure being applied to Terahertz frequency range - Google Patents
A kind of novel waveguide polarization mode conversion diaphragm structure being applied to Terahertz frequency range Download PDFInfo
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- CN106299572A CN106299572A CN201610714731.1A CN201610714731A CN106299572A CN 106299572 A CN106299572 A CN 106299572A CN 201610714731 A CN201610714731 A CN 201610714731A CN 106299572 A CN106299572 A CN 106299572A
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- waveguide
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- frequency range
- mode conversion
- coupled cavity
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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
- H01P5/02—Coupling devices of the waveguide type with invariable factor of coupling
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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
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Abstract
The present invention is open connects a kind of novel waveguide polarization mode conversion diaphragm structure being applied to Terahertz frequency range, whole diaphragm is wafer architecture, centered by the center of circle, eight circular holes of symmetry it are provided with on disk, including four big holes and four small sircle holes, big hole and small sircle hole interval are arranged, concrete home position is equal to standard flange UG387, and its center can design coupled cavity as required；Processing technique of the present invention is simple, and processing cost is low；In missile-borne, the microwave and millimeter wave system such as spaceborne, require that its device volume is little, lightweight, the thickness of the single-iris twist-reflector waveguide of the present invention is just slightly larger than quarter-wave, volume is little, lightweight, having less standing wave and insertion loss, bandwidth of operation, up to waveguide Whole frequency band, has fully met the effect in electromagnetic wave switching polarization direction in compact space structure, requirement of engineering can be met, in missile-borne, spaceborne etc., volume and weight is required have high using value in harsh narrowband systems.
Description
Technical field
The present invention relates to Terahertz circuit unit assembly, a kind of novel waveguide polarization being applied to Terahertz frequency range
Patten transformation diaphragm structure.
Background technology
In the system of microwave and millimeter wave and lower frequency, traditional twisted waveguide structure as shown in Figure 1 is generally used to change
The polarised direction of power transformation magnetic wave.Waveguide bend is that the plastic deformation utilizing metal material realizes, and during twist and warping, usual one end carries
For torsion, the other end is fixed in a rotational direction, need to fill and assist material during twist and warping in waveguide, or be not filled with any material and
Carry out hollow twist and warping or heat hollow twist and warping.In order to reduce the inhomogeneities that twisted waveguide twist section produces, reverse the torsion of 90 °
Segment length is typically greater than 2 times of wavelength, and the twisted waveguide entire length as a example by WR10 is typically greater than 20mm, and this makes system
Volume and weight is bigger.And because this processing technique is complicated, difficulty, cause the chi of its inside surface roughness, waveguide cavities
Very little precision and position of related features are difficult to ensure, quality stability is poor, and processing cost is expensive, involves submillimeter especially for millimeter
The biggest reliability effect of reliability effect of wave system system is the biggest.But, along with the rising of frequency, especially arrive Terahertz frequency range
After, waveguide wavelength enters micron dimension, and traditional mechanical processing technique cannot process this kind of structure substantially.
Summary of the invention
The present invention proposes a kind of novel waveguide polarization mode conversion diaphragm structure being applied to Terahertz frequency range, is a kind of
Realize, by electromagnetic wave coupling, the Waveguide polarization patten transformation diaphragm that polarised direction changes, there is compact conformation, compact etc.
Advantage, 90 ° of polarization conversion diaphragm thickness as a example by standard waveguide WR10 are only 1.14mm, to requiring small and exquisite space structure
Middle switching polarization direction is very favorable, and the design for twisted waveguide provides new thinking and method.
Technical scheme is as follows:
A kind of novel waveguide polarization mode conversion diaphragm structure being applied to Terahertz frequency range, it is characterised in that: whole diaphragm in
Wafer architecture, disk is provided with centered by the center of circle eight circular holes of symmetry, including four big holes and four small sircle holes, greatly
Circular hole and small sircle hole interval are arranged.
The home position of described Waveguide polarization patten transformation diaphragm structure is provided with coupled cavity, this coupled cavity be shaped as two
Individual crossing rectangle, the equal rounding in angle of described rectangle.
Described coupled cavity can be the shape of two identical rectangle intersections, it is also possible to be two identical squares
The shape intersected.
According to electromagnetic wavelength scaling effect proportional to frequency, obtain the method for designing that Whole frequency band is general: according to mark
The standard waveguide of Quasi-Waveguide table lookup design frequency, described coupled cavity width edge length is a, determines:
Width W=0.618 × a of coupled cavity；
The rounding radii R=W/4 of coupled cavity；
Described waveguide wavelength λ g is:,
Wherein: wavelength X=C/f, (C is the light velocity, and f is frequency)；
λ c=2a in the standard waveguide of only TE01 mould transmission；
Finally determine diaphragm thickness D=λ g/4.
Utilizing described Waveguide polarization patten transformation diaphragm structure, the electromagnetic wave that vertical polarization is propagated is by complicated coupling side
Formula couples in coupled cavity, is further continued for propagating in horizontal polarization waveguide, and complicated coupled electromagnetic wave is converted to level
Polarized wave.
The thickness of described Waveguide polarization patten transformation diaphragm structure can determine according to frequency, and the operating frequency of diaphragm is the highest,
The thickness of diaphragm is the thinnest, and the size of coupled cavity is the least.
Beneficial effects of the present invention is as follows:
Processing technique of the present invention is simple, and processing cost is low, can process easily and meet essence below present high precision machine tool
The product of degree；In missile-borne, the microwave and millimeter wave system such as spaceborne, require that its device volume is little, lightweight, the single-iris of the present invention
The thickness of twist-reflector waveguide is just slightly larger than quarter-wave, and volume is little, lightweight, has less standing wave and insertion loss,
Bandwidth of operation is up to waveguide Whole frequency band, and overcome tradition twisted waveguide physical dimension be big, difficulty of processing big, process-cycle length etc.
Shortcoming, has fully met the effect in electromagnetic wave switching polarization direction in compact space structure, can meet requirement of engineering, at bullet
Carry, spaceborne etc. requires have high using value in harsh narrowband systems to volume and weight.
Accompanying drawing explanation
Fig. 1 is tradition twisted waveguide structure chart；
Fig. 2 is the structural representation of the present invention；
Fig. 3 is the polarization mode conversion of electromagnetic field pattern of the present invention；
Fig. 4 is the size design schematic diagram of the diaphragm coupled cavity of the present invention；
Fig. 5 is the testing scheme figure for testing the present invention；
Fig. 6 is test result figure based on scheme shown in Fig. 5.
Detailed description of the invention
As in figure 2 it is shown, a kind of novel waveguide polarization mode conversion diaphragm structure being applied to Terahertz frequency range, whole diaphragm
In wafer architecture, disk is provided with centered by the center of circle eight circular holes of symmetry, including four big holes and four small sircle holes,
Big hole and small sircle hole interval are arranged.
The home position of described Waveguide polarization patten transformation diaphragm structure is provided with coupled cavity, this coupled cavity be shaped as two
Individual crossing rectangle, the equal rounding in angle of described rectangle.
Described coupled cavity can be the shape of two identical rectangle intersections, it is also possible to be two identical squares
The shape intersected.
90 ° of polarization conversion diaphragm thickness as a example by standard waveguide WR10 are only 1.14mm, to requiring small and exquisite space
In structure, switching polarization direction is very favorable, and the design for twisted waveguide provides new thinking and method, this Waveguide polarization mould
Type conversion diaphragm.
Propagation scattergram 3 according to electromagnetic field is observed, and the electromagnetic wave that vertical polarization is propagated is existed by complicated coupled modes
Couple in coupled cavity, be further continued for propagating in horizontal polarization waveguide, complicated coupled electromagnetic wave is converted to horizontal polarization
Ripple.
The peripheral structure of diaphragm designs according to standard flange face UG387, by electromagnetic simulation software simulative optimization, and internal coupling
Close chamber to design as shown in Figure 4.
The size that the processing of the present invention is in kind is essentially identical with dime, depending on thickness is according to frequency.In photo
Diaphragm operating frequency raise the most successively, it is seen that diaphragm thickness is the most thinning, and center coupled cavity size tapers into.
As it is shown in figure 5, Terahertz vector network analyzer test platform testing scheme, use ZVA50 vector network analysis
Instrument impressed frequency is expanded module and is measured, and frequency expansion head docks with vertical waveguide and horizontal waveguide, respectively finally by be measured
Diaphragm is clipped in wherein tests its S parameter.
Changing diaphragm according to test platform selection work in the polarization mode of 110GHz-170GHz frequency range, measured result is such as
Fig. 6, as can be seen from the results in the range of the Whole frequency band of waveguide work, insertion loss is substantially within 1dB, and return loss is better than
15dB, function admirable, classical twisted waveguide can be replaced completely.
Claims (7)
1. the novel waveguide polarization mode conversion diaphragm structure being applied to Terahertz frequency range, it is characterised in that: whole diaphragm
In wafer architecture, disk is provided with centered by the center of circle eight circular holes of symmetry, including four big holes and four small sircle holes,
Big hole and small sircle hole interval are arranged.
A kind of novel waveguide polarization mode conversion diaphragm structure being applied to Terahertz frequency range the most according to claim 1,
It is characterized in that: the home position of described Waveguide polarization patten transformation diaphragm structure is provided with coupled cavity, the shape of this coupled cavity
It is two crossing rectangles, the equal rounding in angle of described rectangle.
A kind of novel waveguide polarization mode conversion diaphragm structure being applied to Terahertz frequency range the most according to claim 2,
It is characterized in that: described coupled cavity is the shape of two identical rectangle intersections.
A kind of novel waveguide polarization mode conversion diaphragm structure being applied to Terahertz frequency range the most according to claim 3,
It is characterized in that: described coupled cavity is the shape that two identical squares intersect.
5. according to a kind of novel waveguide polarization mode conversion being applied to Terahertz frequency range described in claim 2-4 any one
Diaphragm structure, it is characterised in that: according to electromagnetic wavelength scaling effect proportional to frequency, obtain the design that Whole frequency band is general
Method: according to the standard waveguide of standard waveguide table lookup design frequency, the width edge length of described coupled cavity is a, determines:
Width W=0.618 × a of coupled cavity；
The rounding radii R=W/4 of coupled cavity；
Described waveguide wavelength λ g is:,
Wherein: wavelength X=C/f, (C is the light velocity, and f is frequency)；
λ c=2a in the standard waveguide of only TE01 mould transmission；
Finally determine diaphragm thickness D=λ g/4.
A kind of novel waveguide polarization mode conversion diaphragm knot being applied to Terahertz frequency range the most according to claim 1 and 2
Structure, it is characterised in that: utilizing described Waveguide polarization patten transformation diaphragm structure, the electromagnetic wave that vertical polarization is propagated is by complexity
Coupled modes couple in coupled cavity, are further continued for propagating in horizontal polarization waveguide, by complicated coupled electromagnetic wave conversion
For horizontal polarized wave.
A kind of novel waveguide polarization mode conversion diaphragm knot being applied to Terahertz frequency range the most according to claim 1 and 2
Structure, it is characterised in that: the thickness of described Waveguide polarization patten transformation diaphragm structure determines according to frequency, and the operating frequency of diaphragm is more
Height, the thickness of diaphragm is the thinnest, and the size of coupled cavity is the least.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610714731.1A CN106299572A (en) | 2016-08-24 | 2016-08-24 | A kind of novel waveguide polarization mode conversion diaphragm structure being applied to Terahertz frequency range |
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| CN201610714731.1A CN106299572A (en) | 2016-08-24 | 2016-08-24 | A kind of novel waveguide polarization mode conversion diaphragm structure being applied to Terahertz frequency range |
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Cited By (5)
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| CN107870310A (en) * | 2017-09-30 | 2018-04-03 | 北京无线电计量测试研究所 | A kind of both-end port mismatch device design method and device |
| CN114124243A (en) * | 2022-01-27 | 2022-03-01 | 电子科技大学 | An Easy-to-Process High Isolation Terahertz Quadrature Mode Isolation Duplexer |
| CN114421107A (en) * | 2022-01-17 | 2022-04-29 | 电子科技大学 | Miniaturized broadband 90-degree waveguide conversion structure |
| CN114824706A (en) * | 2022-04-22 | 2022-07-29 | 电子科技大学 | Integrally processed filter and method thereof |
| CN117117452A (en) * | 2023-10-24 | 2023-11-24 | 中国工程物理研究院电子工程研究所 | Twisted waveguide for ridge waveguide interconnection |
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| CN107870310A (en) * | 2017-09-30 | 2018-04-03 | 北京无线电计量测试研究所 | A kind of both-end port mismatch device design method and device |
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| CN114124243A (en) * | 2022-01-27 | 2022-03-01 | 电子科技大学 | An Easy-to-Process High Isolation Terahertz Quadrature Mode Isolation Duplexer |
| CN114124243B (en) * | 2022-01-27 | 2022-05-03 | 电子科技大学 | High-isolation terahertz orthogonal mode isolation duplexer easy to machine |
| CN114824706A (en) * | 2022-04-22 | 2022-07-29 | 电子科技大学 | Integrally processed filter and method thereof |
| CN117117452A (en) * | 2023-10-24 | 2023-11-24 | 中国工程物理研究院电子工程研究所 | Twisted waveguide for ridge waveguide interconnection |
| CN117117452B (en) * | 2023-10-24 | 2023-12-22 | 中国工程物理研究院电子工程研究所 | Twisted waveguide for ridge waveguide interconnection |
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Application publication date: 20170104 |