CN105406160A - Conical G-line radio frequency transmission device for terahertz frequency band coaxial line waveguide - Google Patents
Conical G-line radio frequency transmission device for terahertz frequency band coaxial line waveguide Download PDFInfo
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- CN105406160A CN105406160A CN201510786557.7A CN201510786557A CN105406160A CN 105406160 A CN105406160 A CN 105406160A CN 201510786557 A CN201510786557 A CN 201510786557A CN 105406160 A CN105406160 A CN 105406160A
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Abstract
The invention proposes a conical G-line radio frequency transmission device for terahertz frequency band coaxial line waveguide, and aims to provide a radio frequency transmission device which is simple in structure, is easy to process, can be used for achieving super-strong energy concentration characteristic and also can be used for improving terahertz imaging quality and enhancing signal emission power. The radio frequency transmission device is implemented according to the below scheme: the coaxial line waveguide is provided with a metal region (4), a medium region (5) and a coaxial line waveguide external metal layer (6) from inside to outside, the coaxial line waveguide is in transition interconnection with a conical G line (3) through a segment of deformed conical G-line transition structure, an external radio frequency signal is used for radio frequency energy input to the conical G line (3) through the metal region at the tail end of the coaxial line waveguide (1), and a signal is transmitted from a tip part of the conical G line (3). By the conical G-line radio frequency transmission, the problems of high requirement for fabrication process of a terahertz waveguide structure, difficulty in actual application, difficulty in processing and the like in the prior art are solved.
Description
Technical field
The present invention relates to a kind of radio frequency transmission device that can be widely used in terahertz imaging and signal transmitting.
Background technology
Electromagnetic wave within the scope of frequency 0.1 ~ 10.0THz is called as THz wave.Between millimeter wave frequency band and infrared ray frequency range, Terahertz frequency range electromagnetic wave frequency range belongs to far infrared band, there is the peculiar properties such as wavelength is short, good directionality, photon energy are low, high-penetrability, Terahertz system is in the imaging of the character research of semi-conducting material, high temperature superconducting materia, tomography technology, unmarked genetic test, cellular level, chemistry and biological inspection, and broadband connections, microwave be directed etc., and many fields are widely used.Due to the specific position residing for THz ripple, it has much superior characteristic and very important academic research and using value, and make countries in the world all give great concern, 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 application of Terahertz, except terahertz signal source, also must solve the transmission problem of terahertz signal.The research of transmission line is extremely important for the development of Terahertz (THz) technology, and it can transmit terahertz signal effectively, reduces the loss of signal.THz wave shows a series of special nature being different from other electromagnetic radiation: penetration capacity is strong, photon energy is low, can obtain high-resolution picture rich in detail, can carry out time-resolved spectral measurement etc.But the limitation having terahertz emission source to exist in output frequency adjustability and power output and Terahertz image objects and high power transmission need the problem in radio-frequency (RF) output end with very strong Energy Coupling, because steam is to the strong absorption of THz ripple, the terahertz waveguide that research is applicable to different application demand becomes urgent need, but the suitable waveguide materials of current shortage and structure are the major reasons of restriction Terahertz Technology development.
How electromagnetic field retrained effectively and carry out lowly damaging the major issue that transmission is the guided wave structure formed research of Terahertz.Have already been proposed some Terahertzs at present guided wave structure formed.Goubau line is a kind of surface duct wave structure put forward by Goubau.It is on the basis that cylindricality metal wire is guided wave structure formed, forms by increasing one deck medium in metal surface.At Terahertz low-frequency range (0.1-0.5THz), Goubau line can realize low-loss transmission, and loss is 0.1-2.1m
-1.Outer dielectric layer can fetter the electromagnetic energy that metal reflects effectively, and the field restriction ability of cylindricality G line is guided wave structure formed compared to metal wire obtains obvious enhancing.
In Terahertz frequency range, image objects and high power transmission need to have very strong Energy Coupling characteristic at output usually, in order to strengthen energy accumulating characteristic, the present invention improves cylindricality G line, and adopt coaxial line waveguide to carry out radiofrequency signal input, propose a kind of novel Terahertz coaxial line waveguide-taper G line radio frequency transmission device, superpower energy accumulating characteristic can be realized.
Summary of the invention
The present invention seeks to the problem needing to have in radio-frequency (RF) output end very strong Energy Coupling for the limitation of existing terahertz emission source in power output and current Terahertz image objects and high power transmission, there is provided a kind of structure simple, be easy to processing realize, novel Terahertz frequency range coaxial line waveguide-taper G line radio frequency transmission device that working band is wide.This radio frequency transmission device can realize superpower energy accumulating characteristic, 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 coaxial line waveguide taper G line radio frequency transmission device, comprise coaxial line waveguide 1 and taper G line 3, it is characterized in that: coaxial line waveguide 1 is provided with metallic region 4 from inside to outside, areas of dielectric 5 and coaxial line waveguide external metal level 6, this coaxial coaxial line waveguide 1 is by one section of distortion taper G line transition structure 2 transition interconnection taper G line 3, external radio-frequency signal carries out radio-frequency (RF) energy input by coaxial line waveguide 1 tail end areas of dielectric 5 pairs of taper G lines 3, signal output is carried out from the most advanced and sophisticated position of taper G line 3.
The present invention has following beneficial effect:
Structure is simple, is easy to processing.The present invention inputs using coaxial line waveguide as radiofrequency signal, is interconnected, thus export radiofrequency signal by one section of distortion taper G line transition structure transition structure and taper G line.And the use of coaxial line waveguide, can be connected with outside more easily.Guided wave structure formed relative to co-planar waveguide, planar waveguide, medium optical fiber etc., the version of coaxial line waveguide and taper G line just has obviously advantage, their structure is more simple, and size is larger by contrast, so just be easier to processing realize, thus it is high to solve the guided wave structure formed manufacture process requirement of existing Terahertz, practical application is more difficult, is difficult to the problems such as processing.
Couple electromagnetic energy intensity is high.The coaxial coaxial line waveguide 1 of the present invention is by one section of distortion taper G line transition structure 2 transition interconnection taper G line 3, external radio-frequency signal carries out radio-frequency (RF) energy input by coaxial line waveguide 1 tail end areas of dielectric 5 pairs of taper G lines 3, signal output is carried out from the most advanced and sophisticated position of taper G line 3, the energy efficient of terahertz signal is coupled in dielectric layer region, reduce the radiation loss of terahertz signal in space outerpace, at the most advanced and sophisticated position of taper G line, there is superpower energy accumulating characteristic, thus realize efficient coupling, improve the efficiency of the launching and receiving of terahertz signal, this is that existing cylindricality G line is difficult to realize.Compared to cylindricality G line, there is little radiation field in taper G line, most of electromagnetic energy is gathered in waveguide inside around, can realize stronger Energy Coupling at output position, tip.
External radio-frequency signal of the present invention adopts coaxial line waveguide 1 pair of taper G line 3 to carry out radio-frequency (RF) energy input, then carries out signal output from the most advanced and sophisticated position of taper G line.For coaxial line waveguide and the taper G line of different size, one section of distortion taper G line transition structure 2 can be increased between to carry out transition interconnection.Due to this taper G line propagate is surface wave, energy of electromagnetic field is propagated in metal surface, electromagnetic energy fetter by external agency layer, therefore at output position, tip, electromagnetic energy has superpower coupled characteristic.
Terahertz frequency range coaxial line waveguide taper G line radio frequency transmission device of the present invention, realize superpower energy accumulating characteristic, be specially adapted to 0.1THz ~ 0.5THz Terahertz frequency range, terahertz imaging, and effectively can strengthen the radio frequency transmission device of signal transmission power, Terahertz frequency range that stiffness of coupling is adjustable.
Accompanying drawing explanation
Fig. 1 is the decomposing schematic representation of Terahertz frequency range coaxial line of the present invention waveguide-taper G line radio frequency transmission device.
In figure: 1 coaxial line waveguide, 2 distortion taper G line transition structures, 3 taper G lines.4 interior metal regions, 5 areas of dielectric, 6 coaxial line Waveguide coaxial line waveguide external metal levels.
Embodiment
Consult Fig. 1.In embodiment described below, Terahertz frequency range coaxial line waveguide taper G line radio frequency transmission device comprises, coaxial line waveguide 1 and taper G line 3.Described coaxial line waveguide 1 is provided with metallic region 4, areas of dielectric 5 and coaxial line waveguide external metal level 6 from inside to outside, this coaxial coaxial line waveguide 1 is by one section of distortion taper G line transition structure 2 transition interconnection taper G line 3, external radio-frequency signal carries out radio-frequency (RF) energy input by areas of dielectric 5 pairs of taper G lines 3 of coaxial line waveguide 1 tail end, carries out signal output from the most advanced and sophisticated position of taper G line 3.Distortion taper G line transition structure 2 is held greatly docking to connect firmly taper G line 3 and is held greatly, and the small end docking of distortion taper G line transition structure 2 connects firmly on the end face of coaxial line waveguide external metal level 6.External radio-frequency signal adopts coaxial line waveguide 1 pair of taper G line 3 to carry out energy input, then signal output is carried out from most advanced and sophisticated position, for coaxial line waveguide and the taper G line of different size, one section of distortion taper G line transition structure 2 can be increased between to carry out transition interconnection.Due to taper G line propagate is surface wave, energy of electromagnetic field is propagated in metal surface, electromagnetic energy fetter by external agency layer, therefore at output position, tip, electromagnetic energy has close coupling effect.The present invention can improve terahertz imaging quality and strengthen signal transmission power.
The present invention specifically implements to adopt following steps:
First according to Terahertz circuit band requirement, determine frequency passband, select suitable outer media 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.
Claims (2)
1. a Terahertz frequency range coaxial line waveguide taper G line radio frequency transmission device, comprise coaxial line waveguide (1) and taper G line (3), it is characterized in that: coaxial line waveguide (1) is provided with metallic region (4) from inside to outside, areas of dielectric (5) and coaxial line waveguide external metal level (6), this coaxial coaxial line waveguide (1) is by one section of distortion taper G line transition structure (2) transition interconnection taper G line (3), external radio-frequency signal carries out radio-frequency (RF) energy input by coaxial line waveguide (1) to taper G line (3), signal output is carried out from the most advanced and sophisticated position of taper G line (3).
2. Terahertz frequency range coaxial line waveguide taper G line radio frequency transmission device as claimed in claim 1, it is characterized in that: distortion taper G line transition structure (2) is held greatly docking to connect firmly taper G line (3) and held greatly, the small end docking of distortion taper G line transition structure (2) connects firmly on the end face of coaxial line waveguide external metal level (6).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510786557.7A CN105406160A (en) | 2015-11-16 | 2015-11-16 | Conical G-line radio frequency transmission device for terahertz frequency band coaxial line waveguide |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510786557.7A CN105406160A (en) | 2015-11-16 | 2015-11-16 | Conical G-line radio frequency transmission device for terahertz frequency band coaxial line waveguide |
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| CN105406160A true CN105406160A (en) | 2016-03-16 |
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| CN201510786557.7A Pending CN105406160A (en) | 2015-11-16 | 2015-11-16 | Conical G-line radio frequency transmission device for terahertz frequency band coaxial line waveguide |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080023633A1 (en) * | 2006-07-14 | 2008-01-31 | William Marsh Rice University | Method and system for transmitting terahertz pulses |
| US20090284435A1 (en) * | 2004-05-21 | 2009-11-19 | Corridor Systems, Inc. | System and apparatus for transmitting a surface wave over a single conductor |
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2015
- 2015-11-16 CN CN201510786557.7A patent/CN105406160A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090284435A1 (en) * | 2004-05-21 | 2009-11-19 | Corridor Systems, Inc. | System and apparatus for transmitting a surface wave over a single conductor |
| US20080023633A1 (en) * | 2006-07-14 | 2008-01-31 | William Marsh Rice University | Method and system for transmitting terahertz pulses |
Non-Patent Citations (1)
| Title |
|---|
| KEVIN ALONSO, MARK J. HAGMANN: "Use of Goubau line to couple microwave signals generated by resonant laser-assisted field emission", 《ULTRAMICROSCOPY》 * |
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Application publication date: 20160316 |