CN104051836A - Terahertz waveguide coupler - Google Patents
Terahertz waveguide coupler Download PDFInfo
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- CN104051836A CN104051836A CN201410256767.0A CN201410256767A CN104051836A CN 104051836 A CN104051836 A CN 104051836A CN 201410256767 A CN201410256767 A CN 201410256767A CN 104051836 A CN104051836 A CN 104051836A
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- waveguide
- terahertz
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- input waveguide
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Abstract
The invention discloses a terahertz waveguide coupler which comprises an input tapered waveguide, an output coupling waveguide and a terahertz emitter fixing table. The terahertz waveguide coupler is characterized in that the terahertz emitter fixing table is separately provided with two steps and a taper through hole is perpendicularly formed in the middle of the low step; two through holes corresponding to each other vertically are formed parallel to the high step in the edge, adjacent to the joint portion between the high step and the low step, of the high step; the input waveguide is a tapered cylindrical input waveguide and penetrates through the taper through hole of the terahertz emitter fixing table; the large-diameter end of the tapered cylindrical input waveguide is the input end of the tapered cylindrical input waveguide and the small-diameter end is the output end of the tapered cylindrical input waveguide; the output coupling waveguide is located outside the output end face of the tapered cylindrical input waveguide and integrally formed with the tapered cylindrical input waveguide; the axis of the output coupling waveguide and the axis of the tapered cylindrical input waveguide coincide. The terahertz waveguide coupler has the advantages of being high in coupling efficiency, high in integration degree, suitable for waveguides with various end face sizes, simple in structure, easy to machine and capable of being widely applied to tests and application research of terahertz waveguides.
Description
Technical field
The present invention relates to a kind of terahertz waveguide coupler, is specifically the terahertz waveguide coupler that a kind of terahertz emission ripple that terahertz transmitter is produced is coupled into various end surface shape.
Background technology
Terahertz refers to that frequency band arrives the electromagnetic radiation as waves of 10THz at 0.1THz.THz wave, owing to having the peculiar properties such as transient state, low energy and coherence, has great scientific value and wide application prospect in various fields such as Non-Destructive Testing, satellite communication, military radar, health cares.This wherein, terahertz waveguide is as the effective means of transmission THz wave, is research material tera-hertz spectra, the Primary Component that carries out material detection and detection.
How high efficiency terahertz emission ripple is coupled into the emphasis that terahertz waveguide has become domestic and international research.At present, both at home and abroad popular method is to utilize set of lenses THz wave to be collected and converged afferent echo to lead, but that the Terahertz of this method generation converges hot spot is larger, and coupling efficiency is lower, and loss is excessive.
Summary of the invention
In order to solve the defect existing in above-mentioned prior art, the object of the present invention is to provide a kind of have high coupling efficiency, polymorphic type waveguide access, and the integrated integrated terahertz waveguide coupler of terahertz transmitter fixed station.
To achieve these goals, the present invention adopts following technical scheme: a kind of terahertz waveguide coupler, and its feature is: it comprises input waveguide, output coupled waveguide and the step-like terahertz transmitter fixed station of a cuboid; Wherein, terahertz transmitter fixed station is divided into 2 steps, and the middle part of its low order vertically offers a conical through-hole along its terrace; High-order closes on that limit portion with low order joint is parallel with this conical through-hole to be had 2 and distribute up and down and spaced blind holes; Described input waveguide is cone tubular input waveguide, and it is arranged in described conical through-hole; The heavy caliber end of this cone tubular input waveguide is its input end face, and small-caliber end is its output end face; Described output coupled waveguide is positioned at the outside of this cone tubular input waveguide output end face and one-body molded with it; The axle center of output coupled waveguide and the axis coinciding of boring tubular input waveguide.
The length of above-mentioned cone tubular input waveguide is 15mm-30mm, and the angle of its cone angle is 10 °～40 °; The diameter of the input end face of cone tubular input waveguide is 1mm～20mm, and the diameter of output end face is 0.1mm～2mm.
The aperture of 2 blind holes is identical, is 3mm; 2 blind holes separately spacing distance of axis are 10mm; In each blind hole, be provided with screw thread, the tooth of its screw thread is apart from being 0.5mm, and the degree of depth of blind hole is 10-12mm; The vertical centering control separated time of 2 blind hole axis extends the intersect vertical axis with cone tubular input waveguide, and its spacing is 20mm.
The length of above-mentioned terahertz transmitter fixed station is 30mm-60mm, and width is 15mm-30mm, and height and the width are identical; The thickness of its low order is identical with the length of above-mentioned cone tubular input waveguide; The thickness of the Thickness Ratio low order of high-order is wanted thick 2-5mm.
Above-mentioned output coupled waveguide is for to consist of hollow cylinder, hollow rectangle cube or a pair of flat board parallel and that be oppositely arranged each other.
Wherein, when output coupled waveguide is hollow cylinder, the length of its hollow cylinder is 1～10mm, and internal diameter is 0.2-1mm; Wall thickness is 0.1～1mm.
When output coupled waveguide is hollow rectangle cube, its length is 1～10mm, and the width of internal diameter, with highly identical, is 0.1～2mm, and wall thickness is 0.1～1mm.
Output coupled waveguide be a pair of each other parallel and be oppositely arranged flat board output coupled waveguide time, 2 dull and stereotyped size specifications are identical, every dull and stereotyped length is 1～10mm, width is 2～20mm, thickness is 0.1～1mm; Spacing between 2 flat boards is 0.1～2mm.
Terahertz waveguide coupler of the present invention material used can aluminium, in iron or copper any.
Owing to having adopted technique scheme, beneficial effect of the present invention is as follows: the terahertz emission ripple that 1) design of input tapered transmission line can produce terahertz transmitter is completely collected, and converges to the output end face of tapered transmission line; 2) coupling output waveguide is connected with the output end face of tapered transmission line, and the structure of coupling output waveguide can be cylinder, rectangle cuboid or a pair of flat board parallel to each other, the design terahertz waveguide of different port size and dimension that can achieve a butt joint like this, the scope of application of greatly having expanded coupler, has promoted flexibility; 3) terahertz transmitter is fixed on the fixed station of waveguide coupler, the terahertz emission ripple that design can produce terahertz transmitter is like this collected completely, has further promoted the coupling efficiency of waveguide coupler.
Accompanying drawing explanation
Fig. 1 is example one perspective view of the present invention.
Fig. 2 is that Figure 1A-A is to cross-sectional view.
Fig. 3 is that Figure 1B is to structural representation.
Fig. 4 is the perspective view of example two of the present invention, example three.
Fig. 5 is that Fig. 4 C is to the structural representation of example two.
Fig. 6 is that Fig. 4 C is to the structural representation of example three.
Embodiment
Terahertz waveguide coupler of the present invention, it comprises input waveguide, output coupled waveguide and the step-like terahertz transmitter fixed station of a cuboid; Wherein, terahertz transmitter fixed station is divided into 2 steps, and the middle part of its low order vertically offers a conical through-hole along its terrace; High-order closes on that limit portion with low order joint is parallel with this conical through-hole to be had 2 and distribute up and down and spaced blind holes; Described input waveguide is cone tubular input waveguide, and it is arranged in described conical through-hole; The heavy caliber end of this cone tubular input waveguide is its input end face, and small-caliber end is its output end face; Described output coupled waveguide is positioned at the outside of this cone tubular input waveguide output end face and one-body molded with it; The axle center of output coupled waveguide and the axis coinciding of boring tubular input waveguide.
The length of above-mentioned cone tubular input waveguide is 15mm-30mm, and the angle of its cone angle is 10 °～40 °; The diameter of the input end face of cone tubular input waveguide is 1mm～20mm, and the diameter of output end face is 0.1mm～2mm.
The aperture of 2 blind holes is identical, is 3mm; 2 blind holes separately spacing distance of axis are 10mm; In each blind hole, be provided with screw thread, the tooth of its screw thread is apart from being 0.5mm, and the degree of depth of blind hole is 10-12mm; The vertical centering control separated time of 2 blind hole axis extends the intersect vertical axis with cone tubular input waveguide, and its spacing is 20mm.
The length of above-mentioned terahertz transmitter fixed station is 30mm-60mm, and width is 15mm-30mm, and height and the width are identical; The thickness of its low order is identical with the length of above-mentioned cone tubular input waveguide; The thickness of the Thickness Ratio low order of high-order is wanted thick 2-5mm.
Above-mentioned output coupled waveguide is for to consist of hollow cylinder, hollow rectangle cube or a pair of flat board parallel and that be oppositely arranged each other.
Wherein, when output coupled waveguide is hollow cylinder, the length of its hollow cylinder is 1～10mm, and internal diameter is 0.2-1mm; Wall thickness is 0.1～1mm.
When output coupled waveguide is hollow rectangle cube, its length is 1～10mm, and the width of internal diameter, with highly identical, is 0.1～2mm, and wall thickness is 0.1～1mm.
Output coupled waveguide be a pair of each other parallel and be oppositely arranged dull and stereotyped time, 2 dull and stereotyped size specifications are identical, every dull and stereotyped length is 1～10mm, width is 2～20mm, thickness is 0.1～1mm; Spacing between 2 flat boards is 0.1～2mm.
Terahertz waveguide coupler of the present invention material used can aluminium, in iron, copper or alloy material any.
By example, also by reference to the accompanying drawings technical scheme of the present invention is described in further detail below.
Example one:
As shown in Figure 1, Figure 2, Figure 3 shows, terahertz waveguide coupler of the present invention, is processed by a cuboid LY12 Al alloy block; Its structure comprises input waveguide, output coupled waveguide 2, and terahertz transmitter fixed station 3 assembles; Wherein, terahertz transmitter fixed station 3 is divided into 2 steps, and the width of 2 steps is identical, and the middle part of its low order vertically offers a conical through-hole along its terrace; High-order closes on that limit portion with low order joint is parallel with this conical through-hole to be had 2 and distribute up and down and spaced blind holes; The input waveguide filling is cone tubular input waveguide 1, and it is arranged in conical through-hole; The heavy caliber end of this cone tubular input waveguide 1 is its input end face 11, and its diameter is 20mm; Small-caliber end is its output end face 12, and diameter is 2mm, also can be set as according to actual needs 1～10mm; The cone angle of cone tubular is 25 °; Output coupled waveguide 2 be hollow cylinder, and this hollow cylinder output coupled waveguide 21 is positioned at bores the outside of tubular input waveguide 1 output end face 12 and one-body molded with it; The axle center and the axis coinciding of boring tubular input waveguide 1 of hollow cylinder output coupled waveguide 21.
In this example, the length of hollow cylinder output coupled waveguide 21 is 4mm, and its internal diameter is identical with the internal diameter of the output end face 12 of cone tubular input waveguide 1, is 2mm, and wall thickness is 0.4mm;
The length of terahertz transmitter fixed station 3 is 30mm; Width is 15mm; Be highly 20mm; Wherein, the aperture of 2 blind holes is identical, is 3mm; The degree of depth of this blind hole is 11mm; The requirement of setting according to terahertz transmitter fixed station, the degree of depth of its blind hole can also be 10-12mm; The tooth of blind hole internal thread is apart from being 0.5mm, and 2 blind holes separately vertical interval of axial line are 10mm; The vertical centering control separated time of 2 blind hole lines of centres intersects vertically with the axial line of input tapered transmission line 1, and its spacing is 20mm; Terahertz transmitter fixed station 3 is offered the Thickness Ratio of the high-order table top of blind hole the thick 2mm of going out of low order thickness that bores tubular input waveguide 1 is installed.
Example two:
As shown in Figure 4, Figure 5, terahertz waveguide coupler in this example, its cone tubular input waveguide 1, output coupled waveguide, the molding mode of terahertz transmitter fixed station 3 is all identical with example one, and cone tubular input waveguide 1 overlaps mutually with the axis of output coupled waveguide.
In this example, material therefor is basic identical with example one, does not repeat them here.
Its difference is: output Coupled Passive Waveguide Structure used is different, for hollow rectangle cube forms: the internal diameter of its hollow rectangle cube output coupled waveguide 22 is positioned at the periphery in output port 12 outsides of boring tubular input waveguide 1 and is formed in one; The length of this hollow rectangle cube output coupled waveguide 22 is 4mm, and its internal diameter is rectangle, and the width of its rectangle and highly measure-alike, be 2mm, and wall thickness is 0.4mm; The length of this hollow rectangle cube output coupled waveguide 21 also can be set as 1～10mm according to the size of cone tubular input waveguide 1 design, the cubical internal diameter of hollow rectangle, and its width, with highly identical, is 0.1～2mm, and wall thickness is 0.1～1mm.
Example three:
As shown in Fig. 4, Fig. 6, terahertz waveguide coupler of the present invention, its cone tubular input waveguide 1, output coupled waveguide, the molding mode of terahertz transmitter fixed station 3 is identical, and cone tubular input waveguide 1 overlaps mutually with the axis of output coupled waveguide.
Structure in this example and material therefor are basic identical with example one, do not repeat them here.
Its difference is: output coupled waveguide used is dull and stereotyped output coupled waveguide 23, and this flat board output coupled waveguide 23 forms for a pair of flat board setting up and down and that be parallel to each other: its dull and stereotyped inner side edge is positioned at the locating up and down of output end face 12 external diameters of cone tubular input waveguide 1; In this flat board output coupled waveguide 23,2 dull and stereotyped size specifications are identical; Every dull and stereotyped length is 4mm, and width is 10mm, and thickness is 0.4mm; Vertical range between 2 flat boards is 2mm.
When conical through-hole size variation that the cone tubular size of cone tubular input waveguide 1 is offered according to terahertz waveguide coupler low order, dull and stereotyped output coupled waveguide 23 every dull and stereotyped specifications also can be at length 1～10mm, width 2～20mm, sets in the scope of thickness 0.1～1mm as required; Spacing between 2 flat boards is set within the scope of 0.1～2mm.
Terahertz waveguide coupler of the present invention is a kind of high coupling efficiency, polymorphic type waveguide access, and the integrated integrated terahertz waveguide coupler of terahertz transmitter fixed station.
Its operation principle is as follows: terahertz waveguide coupler is the THz wave of free-space propagation to be coupled into the device of terahertz waveguide.First, in the THz wave of free-space propagation, can enter the input end face of waveguide coupler middle conical tube shape waveguide; Secondly, due to the pyramidal structure design of input tapered transmission line, THz wave can be limited in this part waveguide, and by the output end face outgoing of this tapered transmission line, enters into output coupled waveguide; Finally, by this last output coupled waveguide, Terahertz wave propagation is further retrained, and send in terahertz waveguide.Terahertz waveguide will carry out embedded connection in this final stage output coupled waveguide, and the external diameter of exporting even summation waveguide by design makes it be less than the internal diameter that THz wave arrives, and insert the effect of this final stage output even summation waveguide to reach terahertz waveguide outward.Whole constraint principles is to utilize the minute surface total reflection of light in waveguide coupler to reach.
The terahertz waveguide coupler of overall construction design, it is advantageous that: by two blind holes on fixed station, whole coupler can be fixed; That exports coupled waveguide can be designed to various shape, in order to meet the size of the terahertz waveguide accessing below.Utilize minute surface total reflection principle constraint THz wave, reached the effect that converges output, do like this loss that can effectively reduce THz wave energy.
Claims (8)
1. a terahertz waveguide coupler, is characterized in that: it comprises input waveguide (1), output coupled waveguide (2) and the step-like terahertz transmitter fixed station (3) of a cuboid; Wherein, terahertz transmitter fixed station (3) is divided into two steps, and the middle part of its low order vertically offers a conical through-hole along its terrace; High-order closes on that limit portion with low order joint is parallel with this conical through-hole to be had 2 and distribute up and down and spaced blind holes; Described input waveguide is cone tubular input waveguide (1), and it is arranged in described conical through-hole; The heavy caliber end of described cone tubular input waveguide (1) is its input end face (11), and small-caliber end is its output end face (12); Described output coupled waveguide (2) is positioned at the outside of this cone tubular input waveguide (1) output end face and one-body molded with it; The axis coinciding of the axle center of described output coupled waveguide (2) and described cone tubular input waveguide (1).
2. terahertz waveguide coupler according to claim 1, is characterized in that: the length of described cone tubular input waveguide (1) is 15mm-30mm, and the angle of its cone angle is 10 °～40 °; The diameter of described input end face (11) is 1mm～20mm; The diameter of described output end face (12) is 0.1mm～2mm.
3. terahertz waveguide coupler according to claim 2, is characterized in that: the aperture of 2 described blind holes is identical, is 3mm; 2 blind holes separately spacing distance of axis are 10mm; In each blind hole, be provided with screw thread, the tooth of its screw thread is apart from being 0.5mm, and the degree of depth of blind hole is 10-12mm; The vertical centering control separated time of 2 described blind hole axis extends the intersect vertical axis with described cone tubular input waveguide (1), and its spacing is 20mm.
4. terahertz waveguide coupler according to claim 3, is characterized in that: the length of described terahertz transmitter fixed station (3) is 30mm-60mm, and width is 15mm-30mm, and height and the width are identical; The thickness of its low order is identical with the length of described cone tubular input waveguide (1); The thick 2-5mm of the thickness of low order described in the Thickness Ratio of described high-order.
5. according to terahertz waveguide coupler described in claim 1-4 any one, it is characterized in that: described output coupled waveguide (2) is for to consist of hollow cylinder, hollow rectangle cube or a pair of flat board parallel and that be oppositely arranged each other.
6. terahertz waveguide coupler according to claim 5, is characterized in that: described output coupled waveguide (2) is hollow cylinder output coupled waveguide (21), and the length of its hollow cylinder is 1～10mm, and internal diameter is 0.2-1mm; Wall thickness is 0.1～1mm.
7. terahertz waveguide coupler according to claim 5, it is characterized in that: described output coupled waveguide (2) is hollow rectangle cube output coupled waveguide (22), and its length is 1～10mm, and the width of its internal diameter is with highly identical, be 0.1～2mm, wall thickness is 0.1～1mm.
8. terahertz waveguide coupler according to claim 5, is characterized in that: described output coupled waveguide (2) is a pair of parallel and flat board output coupled waveguide (23) that is oppositely arranged each other; Wherein, 2 dull and stereotyped sizes are identical, and every dull and stereotyped length is 1～10mm, and width is 2～20mm, and thickness is 0.1～1mm; Spacing between 2 flat boards is 0.1～2mm.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112310587A (en) * | 2020-10-27 | 2021-02-02 | 华东光电集成器件研究所 | Waveguide output bearing device |
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| CN103762416A (en) * | 2014-02-25 | 2014-04-30 | 中国工程物理研究院电子工程研究所 | Terahertz wave chip-mounted-waveguide-loudspeaker conversion antenna |
| CN103811876A (en) * | 2014-02-26 | 2014-05-21 | 中国工程物理研究院电子工程研究所 | Chip-medium filling horn antenna applied to terahertz wave band phase array |
| CN104048814A (en) * | 2014-06-25 | 2014-09-17 | 首都师范大学 | Terahertz waveguide test system |
| CN203932287U (en) * | 2014-06-10 | 2014-11-05 | 首都师范大学 | A kind of terahertz waveguide coupler |
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2014
- 2014-06-10 CN CN201410256767.0A patent/CN104051836A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1150703A (en) * | 1995-07-28 | 1997-05-28 | 日本电气株式会社 | Hermetically sealed structure for junction of two waveguides |
| US7583074B1 (en) * | 2005-12-16 | 2009-09-01 | Hrl Laboratories, Llc | Low cost millimeter wave imager |
| CN201662531U (en) * | 2010-01-14 | 2010-12-01 | 首都师范大学 | Small-sized Terahertz time-domain spectrograph |
| CN103762416A (en) * | 2014-02-25 | 2014-04-30 | 中国工程物理研究院电子工程研究所 | Terahertz wave chip-mounted-waveguide-loudspeaker conversion antenna |
| CN103811876A (en) * | 2014-02-26 | 2014-05-21 | 中国工程物理研究院电子工程研究所 | Chip-medium filling horn antenna applied to terahertz wave band phase array |
| CN203932287U (en) * | 2014-06-10 | 2014-11-05 | 首都师范大学 | A kind of terahertz waveguide coupler |
| CN104048814A (en) * | 2014-06-25 | 2014-09-17 | 首都师范大学 | Terahertz waveguide test system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112310587A (en) * | 2020-10-27 | 2021-02-02 | 华东光电集成器件研究所 | Waveguide output bearing device |
| CN112310587B (en) * | 2020-10-27 | 2022-02-01 | 华东光电集成器件研究所 | Waveguide output bearing device |
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Application publication date: 20140917 |