CN105428769A - Terahertz-frequency-band plane interconnection guide wave structure - Google Patents
Terahertz-frequency-band plane interconnection guide wave structure Download PDFInfo
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- CN105428769A CN105428769A CN201510786325.1A CN201510786325A CN105428769A CN 105428769 A CN105428769 A CN 105428769A CN 201510786325 A CN201510786325 A CN 201510786325A CN 105428769 A CN105428769 A CN 105428769A
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- plane
- terahertz
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- guided wave
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P3/00—Waveguides; Transmission lines of the waveguide type
- H01P3/16—Dielectric waveguides, i.e. without a longitudinal conductor
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Abstract
The invention proposes a terahertz-frequency-band plane transition guide wave structure and aims to provide a plane interconnection guide wave structure which is simple in structure and easy to machine and can be widely applied to terahertz plane circuits. The guide wave structure is realized by the following scheme: a plane medium guide wave structure (1) serves as a radio-frequency signal input by taking a plane medium waveguide as a port; the port is connected with an output radio-frequency signal of a plane Goubau line through a section of plane and a conical gradual transition structure; and the plane medium guide wave structure, the conical gradual transition structure (2) for conical gradual transition of the plane, and the plane Goubau line share a middle medium substrate to transmit a broadband terahertz signal so as to realize effective interconnection between terahertz-frequency-band plane circuits. The energy of the terahertz signal can be effectively coupled to an internal medium layer to obtain better energy gathering property, the radiation loss of the terahertz signal in external space is reduced, and the terahertz signal can be efficiently coupled to an external terahertz plane circuit or an antenna structure.
Description
Technical field
The invention relates to the interconnection of a kind of Terahertz novel planar guided wave structure formed, realize the guided wave structure formed of broadband terahertz signal transmission, be specially adapted to the effective interconnection between Terahertz frequency range planar circuit.
Background technology
THz wave, between millimeter wave and infrared ray, overlaps with millimeter wave in long-wave band, and overlaps with infrared ray at short-wave band.Have the character different from the electromagnetic wave of other frequency range, it occupies very special position in electromagnetic spectrum, and being the frequency range uniquely developed not yet completely in electromagnetic spectrum, is an electromagnetic wave frequency range having very much scientific value.THz wave has the peculiar properties such as wavelength is short, good directionality, photon energy are low, high-penetrability, and therefore Terahertz Technology becomes the focus of international research gradually.It is in basic research fields such as physics, chemistry, astronomy, life science and medical science, and the Applied research fields such as field such as safety inspection, Non-Destructive Testing, bio-imaging, environmental monitoring, Food Inspection, environmental monitoring, medical diagnosis, radar-reconnaissance, satellite communication and astronomical observation all have huge scientific research value.This kind of transmission line of surface wave guide both can be used on wavelength longer time (as metric wave), also can be used on quite short wavelength (as millimeter wave), even, terahertz waves wave band may be used.Surface wave transmission line lateral dimension is little, thus has practical value widely.Slab Dielectric Waveguide can be operated on the basic mode mould of waveguide, and millimeter wave and Terahertz planar circuit play very important effect.Compared to metal parallel plate waveguide, electromagnetic energy more effectively can be gathered in interior media region and transmit by Slab Dielectric Waveguide, thus strengthens the energy accumulating ability of waveguide.
The application of Terahertz, except terahertz signal source, also must solve the transmission problem of terahertz signal, and this also comprises the interconnection between Terahertz planar circuit.In Terahertz the reach of science process, the research of Terahertz transmission line is a most indispensable part, is the basis of Terahertz frequency range development and application.It can transmit terahertz signal effectively, reduces the loss of signal.But the suitable waveguide materials of current shortage and structure are the major reasons of restriction Terahertz Technology development.
How to retrain electromagnetic field and to carry out effectively transmission is the major issue of the guided wave structure formed research of Terahertz.Have already been proposed some Terahertzs at present guided wave structure formed.In the middle of these structures, some are guided wave structure formed is particularly suitable for realizing Terahertz planar circuit and realizes effective interconnection, but cannot realize effective interconnection between current Terahertz planar circuit.
Goubau (G) line is a kind of surface duct wave structure put forward by ancient Bao Goubau.It is on the basis that cylindricality metal wire is guided wave structure formed, forms by increasing one deck medium in metal surface.By being out of shape Goubau line, form planar structure, plain conductor is positioned at dielectric substrate material surface, forms plane Goubau line.
Summary of the invention
The present invention seeks to the problem for realizing effective interconnection between current Terahertz planar circuit, provide a kind of structure simple, be easy to processing, stiffness of coupling is high, and the wide Terahertz plane transition of working band is guided wave structure formed.This is guided wave structure formed can make the radio signal transmission realizing effective, low damage between multiple Terahertz planar circuit, thus improves the efficiency of the launching and receiving of terahertz signal, particularly can be applicable to whole 0.1THz ~ 0.5THz Terahertz frequency range.
Above-mentioned purpose of the present invention can be achieved by the following technical programs, a kind of Terahertz frequency range planar interconnect is guided wave structure formed, comprise plating media guided wave structure formed 1 and plane Goubau line 3, it is characterized in that: plating media guided wave structure formed 1 is that port inputs as radiofrequency signal with Slab Dielectric Waveguide, port connects plane Goubau line by the 2 one sections of conical gradual change transition of planar cone gradual transition structure, and wherein plating media is guided wave structure formed, planar cone gradual transition is guided wave structure formed and plane Goubau line shares intermediate medium substrate.Namely guided wave structure formed, the planar cone gradual transition 2 conical gradual change transition structure of plating media and plane Goubau line share intermediate medium substrate transfer broadband terahertz signal, realize the effective interconnection between Terahertz frequency range planar circuit.
The present invention has following beneficial effect compared to prior art:
Structure is simple, is easy to processing.The present invention is guided wave structure formed as radiofrequency signal input using plating media, interconnects, thus export radiofrequency signal by one section of conical gradual change transition is guided wave structure formed with plane Goubau line.And current Terahertz planar circuit generally adopts microstrip structure, the version of plane Goubau line itself is particularly suitable for interconnecting with micro-band, which solves the transmission problem of terahertz signal.Guided wave structure formed relative to Terahertzs such as current proposed co-planar waveguide, planar waveguide, medium optical fiber, plating media is guided wave structure formed just has obviously advantage with version that is plane Goubau line, their structure is more simple, and size is larger by contrast, so just be easier to processing realize, thus the guided wave structure formed manufacture process requirement of Terahertz solving existing single structure form is high, practical application is more difficult, is difficult to the problems such as processing.
Stiffness of coupling is high.The present invention is guided wave structure formed at plating media, the middle common media substrate that adopts of planar cone gradual transition structure and plane Goubau line realizes broadband terahertz signal transmission, be connected plane Goubau line by one section of plane with conical gradual change transition structure and export radiofrequency signal, the energy efficient of terahertz signal can be coupled in inner dielectric layer, obtain stronger energy accumulating characteristic, reduce the radiation loss that terahertz signal is present in space outerpace, efficient coupling can be realized with outside Terahertz planar circuit or antenna structure, improve the efficiency of the launching and receiving of terahertz signal.Meanwhile, by regulating guided wave structure formed, the conical gradual change transition structure of plating media and the relative position of plane Goubau line three and the thickness of dielectric layer, carry out tuning stiffness of coupling easily, this is the guided wave structure formed very difficult realization of existing Terahertz.Result of the test also shows that port is connected plane Goubau line by one section of plane with conical gradual change transition structure and can realizes superpower energy accumulating characteristic in Terahertz frequency range.This guided wave structure formedly has good transmission characteristic at low temperatures simultaneously.
Because Goubau line can realize low-loss transmission in Terahertz low-frequency range (0.1-0.5THz), loss is 0.1-2.1m
-1.Plane Goubau line is guided wave structure formed becomes Goubau line into rectangular configuration by cylindricality.When THz wave is transmitted by plane Goubau line is guided wave structure formed, there is the features such as low-loss, wide-band and structure are simple.If metal conduction band is moved to dielectric layer surface, define deformation plane Goubau line guided wave structure formed (ModifiedplanarGoubauline, be called for short MPGL), this guided wave structure formedly have lower Terahertz loss.This plane Goubau line and plating media is guided wave structure formed interconnects, has high efficiency and wide band characteristic.
The present invention is specially adapted to the effective interconnection between 0.1THz ~ 0.5THz Terahertz frequency range planar circuit, and the planar circuit transmitting device of coupling frequency and the adjustable Terahertz frequency range of stiffness of coupling.
Accompanying drawing explanation
Fig. 1 is that Terahertz frequency range planar circuit of the present invention interconnects guided wave structure formed front view.
Fig. 2 is the vertical view of Fig. 1.
In figure: 1 plating media is guided wave structure formed, 2 conical gradual change transition structures, 3 plane Goubau lines.
Embodiment
Consult Fig. 1-Fig. 2.The plane transition of Terahertz frequency range is guided wave structure formed to be comprised: plating media guided wave structure formed 1 and plane Goubau line 3, wherein: plating media guided wave structure formed 1 is that port inputs as radiofrequency signal with Slab Dielectric Waveguide, port is by one section of plane and conical gradual change transition structure or fin-line transition structure, connect plane Goubau line and export radiofrequency signal, and plating media is guided wave structure formed, planar cone gradual transition 2 conical gradual change transition structure and plane Goubau line share intermediate medium substrate transfer broadband terahertz signal, realize the effective interconnection between Terahertz frequency range planar circuit.
Plane transition is guided wave structure formed can pass through the size changing dielectric substrate, and the width of plane ancient Bao Goubau line 3 surface metal signal conductor realizes low-loss radio signal transmission, thus realizes the Terahertz planar circuit interconnection in engineer applied.
Plating media is guided wave structure formed as radio-frequency (RF) signal input end, and its main mould of transmission is identical with standard rectangular waveguide, namely can be connected with rectangular waveguide, also can interconnect with fin line.
The gradual transition structure of planar cone gradual transition 2 can adopt tapering transition structure, also can adopt fin-line transition structure, makes to realize effective interconnection between the signal metal wire of two kinds of different in width.By changing the size of this gradual transition structure, regulate the loss of radiofrequency signal.
Plane Goubau line can directly interconnect, as co-planar waveguide, micro-band etc. with multiple guided wave structure formed form.By changing thickness and the width of dielectric substrate, and the width of top signal metal wire realizes low-loss radio signal transmission.
The present invention specifically implements to adopt following steps:
First according to Terahertz circuit band requirement, determine frequency passband, select suitable dielectric substrate material, utilize microwave circuit CASE(Computer Aided Software Engineering), set up the guided wave structure formed of Fig. 1, transmission characteristic design object needed for setting, by the Optimized Program of software, thus determines each unit linear electrical parameter.
The planar interconnect that the present invention is applied to Terahertz frequency range is guided wave structure formed, external radio-frequency signal input Slab Dielectric Waveguide 1, carry out conducting by conical gradual change transition structure 2 and plane Goubau line 3, then export radiofrequency signal to external circuit, realize the planar interconnect between Terahertz circuit.Slab Dielectric Waveguide, as radio-frequency (RF) signal input end, namely can be connected with rectangular waveguide, also can interconnect with fin line and micro-band; The plane Goubau line of output also can directly interconnect, as co-planar waveguide, micro-band etc. with multiple guided wave structure formed form.The invention solves in engineer applied the difficult problem realizing between Terahertz planar circuit interconnecting.
Claims (5)
1. a Terahertz frequency range planar interconnect is guided wave structure formed, comprise plating media guided wave structure formed (1) and plane Goubau line (3), it is characterized in that: plating media guided wave structure formed (1) is that port inputs as radiofrequency signal with Slab Dielectric Waveguide, described port connects plane Goubau line by (2) the one sections of conical gradual change transition of planar cone gradual transition structure, and wherein plating media is guided wave structure formed, planar cone gradual transition is guided wave structure formed and plane Goubau line shares intermediate medium substrate.
2. Terahertz planar interconnect as claimed in claim 1 is guided wave structure formed, it is characterized in that: the size changing dielectric substrate, and the width of plane Goubau line (3) surface metal signal conductor carrys out transmitting radio frequency signal, thus realize the Terahertz planar circuit interconnection in engineer applied.
3. Terahertz plating media as claimed in claim 1 is guided wave structure formed, and it is characterized in that: plating media is guided wave structure formed as radio-frequency (RF) signal input end, its main mould of transmission is identical with standard rectangular waveguide.
4. Terahertz frequency range planar interconnect as claimed in claim 1 is guided wave structure formed, it is characterized in that: gradual transition structure adopts fin-line transition structure.
5. Terahertz frequency range planar interconnect as claimed in claim 1 is guided wave structure formed, it is characterized in that: plane Goubau line directly and co-planar waveguide, the multiple guided wave structure formed form of micro-band interconnect.
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| CN201510786325.1A CN105428769A (en) | 2015-11-16 | 2015-11-16 | Terahertz-frequency-band plane interconnection guide wave structure |
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| CN201510786325.1A CN105428769A (en) | 2015-11-16 | 2015-11-16 | Terahertz-frequency-band plane interconnection guide wave structure |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105846070A (en) * | 2016-04-13 | 2016-08-10 | 吉林大学 | Probe antenna for terahertz waveband near-field imaging |
| CN107102453A (en) * | 2017-07-05 | 2017-08-29 | 电子科技大学 | A kind of fin line loads the THz wave fast modulator of HEMT nested structures |
| CN108461884A (en) * | 2018-02-12 | 2018-08-28 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Four branch port plating media terahertz waveguide couplers |
| CN108511867A (en) * | 2018-02-12 | 2018-09-07 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Terahertz waveguide power splitter |
| CN109063273A (en) * | 2018-07-12 | 2018-12-21 | 中国科学院国家空间科学中心 | A method of being used to prepare Terahertz dielectric-rod antenna |
Citations (1)
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| US20030226961A1 (en) * | 2002-06-11 | 2003-12-11 | Hagmann Mark J. | Efficient high-frequency energy coupling in radiation-assisted field emission |
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2015
- 2015-11-16 CN CN201510786325.1A patent/CN105428769A/en active Pending
Patent Citations (1)
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| US20030226961A1 (en) * | 2002-06-11 | 2003-12-11 | Hagmann Mark J. | Efficient high-frequency energy coupling in radiation-assisted field emission |
Non-Patent Citations (4)
| Title |
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| CHAHADIH, A ET AL: "Planar Goubau Lines For On Chip Terahertz Microscopy", 《39TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ)》 * |
| DJAMAL GACEMI ET AL: "Confinement of THz surface waves on the subwavelength size metal waveguide", 《APPLIED PHYSICS A》 * |
| JASON A. DEIBEL ET AL: "The excitation and emission of terahertz surface plasmon polaritons on metal wire waveguides", 《COMPTES RENDUS PHYSIQUE》 * |
| SIMON LAURETTE ET AL: "Corrugated Goubau Lines to Slow Down and Confine THz Waves", 《 IEEE TRANSACTIONS ON TERAHERTZ SCIENCE AND TECHNOLOGY》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105846070A (en) * | 2016-04-13 | 2016-08-10 | 吉林大学 | Probe antenna for terahertz waveband near-field imaging |
| CN107102453A (en) * | 2017-07-05 | 2017-08-29 | 电子科技大学 | A kind of fin line loads the THz wave fast modulator of HEMT nested structures |
| CN107102453B (en) * | 2017-07-05 | 2019-06-21 | 电子科技大学 | A kind of THz wave fast modulator of fin line load HEMT nested structure |
| CN108461884A (en) * | 2018-02-12 | 2018-08-28 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Four branch port plating media terahertz waveguide couplers |
| CN108511867A (en) * | 2018-02-12 | 2018-09-07 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Terahertz waveguide power splitter |
| CN109063273A (en) * | 2018-07-12 | 2018-12-21 | 中国科学院国家空间科学中心 | A method of being used to prepare Terahertz dielectric-rod antenna |
| CN109063273B (en) * | 2018-07-12 | 2023-05-23 | 中国科学院国家空间科学中心 | Method for preparing terahertz dielectric rod antenna |
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Application publication date: 20160323 |