CN108511867A - Terahertz waveguide power splitter - Google Patents
Terahertz waveguide power splitter Download PDFInfo
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- CN108511867A CN108511867A CN201810143507.0A CN201810143507A CN108511867A CN 108511867 A CN108511867 A CN 108511867A CN 201810143507 A CN201810143507 A CN 201810143507A CN 108511867 A CN108511867 A CN 108511867A
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- terahertz
- lines
- power splitter
- film resistor
- wave
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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
- H01P5/12—Coupling devices having more than two ports
- H01P5/16—Conjugate devices, i.e. devices having at least one port decoupled from one other port
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Abstract
A kind of terahertz waveguide power divider proposed by the present invention, it is desirable to provide a kind of simple in structure, easy processing can be widely applied for the radiofrequency signal work(separation structure of Terahertz planar circuit.The present invention is achieved by following proposal：The slab guide metal tape G lines (2) of two dielectric substrates (1) covering are symmetrically extended to dielectric substrate (1) plane both sides as two THz wave output ports by U-bend curved end point, film resistor (3) is connected between U-shaped opening, two branch work(divide the Terahertz radiofrequency signal exported between U-shaped opening is isolated, and form two power splitter of Terahertz.Film resistor (3) can improve the isolation between two road work(of Terahertz point output radiofrequency signal.The present invention can be exported the terahertz signal all the way of input by two tunnels, can be realized high efficiency of transmission with external Terahertz planar circuit or antenna structure, can preferably be realized the effective interconnection between Terahertz frequency range planar circuit.
Description
Technical field
The present invention relates to one kind in the basic research such as physics, chemistry, astronomy, life science and medicine field, and
Safety inspection, non-destructive testing, bio-imaging, environmental monitoring, Food Inspection, environmental monitoring, medical diagnosis, radar-reconnaissance, satellite
The fields such as communication and astronomical observation are especially applicable in based on the Terahertz surface wave power divider structure of Terahertz field plane G lines
Effective interconnection between Terahertz frequency range planar circuit realizes the guided wave structure of Terahertz radiofrequency signal work(point transmission.
Background technology
THz wave is the frequency range electromagnetic wave between millimeter wave and infrared ray, is macroelectronics to microcosmic photon
The frequency range of transition is learned, in field of spectroscopy, it is also referred to as far ir ray.Terahertz frequency range is 300-10000GHz
A kind of saying now popular (10THz) is that 0.3-30GHz is microwave frequency band, and 30-300GHz is millimeter wave frequency band,
0.1-10THz is referred to as Terahertz frequency range by someone.This frequency range is referred to as " THz Gap (Terahertz wide gap) ", the reason is that this
Frequency range is clipped in the frequency of two development relative maturities, i.e., between electronics frequency spectrum and optical spectrum, low-frequency range and person in electronics
Millimeter wave frequency band have an overlapping, high band have with the far infrared frequency range (wavelength 0.03-1.0mm) of optical field it is overlapping, due to this
The particularity in one field forms the clear area of early stage research.Since it is overlapped in long-wave band with millimeter wave, and short-wave band with
Infrared ray overlaps, and has the property different from the electromagnetic wave of other frequency ranges.THz wave has good penetrate to dielectric material
Ability has the peculiar properties such as short wavelength, good directionality, the low, high-penetration of photon energy, and be one has scientific value very much
Electromagnetic wave frequency range.In addition, the bandwidth of Terahertz frequency range is very wide, it can be communicated from 0.1-10THz for ultrahigh speed and abundant frequency spectrum is provided
Resource occupies very special position in electromagnetic spectrum, is unique frequency range not yet developed and used completely, quilt in electromagnetic spectrum
Scientific circles are known as last " the Terahertz gap " of electromagnetic spectrum.The application of Terahertz is in addition to terahertz signal source, it is necessary to solve
The problem of transmission problem of terahertz signal, this also includes Terahertz radiofrequency signal plane work(point transmission.Terahertz transmission line
Research is a most indispensable part, is the basis of Terahertz frequency range development and application.It can effectively believe Terahertz
It number is transmitted, reduces the transmission loss of signal.But it is influenced by water vapor in air, THz electromagnetic waves are in free space transmission
With very big absorption loss, and transmission direction is difficult to control.Since polar molecule (such as hydrone) has THz wave
There are very strong absorption, this point to limit application of the THz wave in long-distance radio communication.Current Terahertz planar circuit one
As using microstrip structure or suspension microstrip structure, during Terahertz the reach of science, between Terahertz planar circuit very
Hardly possible realizes effective interconnection.Lack high-power signal source in terahertz wave band, relatively high power is exported to meet Terahertz system
Demand, power synthetic technique must be used, therefore the demand to Terahertz work(point/synthesizer is increasingly urgent to.However, restricted
In its intrinsic physical size characteristic, rarely has successful example.THz wave power splitter is a kind of important THz wave effector
Part, but mostly there is complicated, work(component efficiency is low, the shortcomings such as of high cost for THz wave power splitter.In practical application,
When the output power of single power amplifier part be subject to processing technique, heat dissipation the problems such as limitation and be difficult to meet some systems pair
When the demand of higher-wattage, it usually needs synthesized the power of multiple devices to obtain Gao Gong using work(point/synthesizer
The output of rate.The structures such as power divider/synthesizer generally use microstrip line, strip line, wave-guide cavity wave are realized.Microstrip line, band
Shape line has the advantages that processing is simple, small, but power capacity is small, Q is larger.Wave-guide cavity wave structure has power capacity
Greatly, the advantages that Insertion Loss is small and easy heat radiation, but big with its volume, be difficult to overcome the shortcomings that, such as weight is big, and is difficult to meet the modern times
Communication system architecture is compact, light weight requirement.
The transmission structure of Terahertz frequency range has many selections, needs for the different suitable guided wave structure of demand selection
There is still a need for the Terahertz transmission wire materials and structure of finding more low-loss and dispersion simultaneously.Surface wave guide be it is a kind of after occur
Transmission line structure, surface wave is a kind of electromagnetic wave that the interface along two mediums is propagated, and surface wave can be drawn by its dielectric surface
It leads without to external radiation, can be used for millimeter wave frequency band.(such as rice when this kind of transmission line of surface wave guide both can be longer used in wavelength
Wave), extremely short wavelength (such as millimeter wave) is can be also used in, terahertz waves wave band is possibly even used.Surface wave transmission line transverse direction ruler
It is very little little, thus have extensive practical value.Goubau (G) line is by a kind of surface wave of the ancient Bao Goubau planes put forward
It is guided wave structure.It is constituted by increasing by one layer of medium in metal surface on the basis of cylindricality metal wire is guided wave structure
There is the single conductor that dielectric is covered with.By being deformed to Goubau lines, planar structure is formed, plain conductor is located at dielectric substrate
Material surface constitutes plane Goubau lines, abbreviation plane G lines.Compared to other transmission line structure forms, plane G lines can be more
Effectively electromagnetic energy is gathered in areas of dielectric and is transmitted, to reduce conductance loss, improves the transmission damage of transmission line
Consumption.
Invention content
Purpose of the present invention is to be directed to the problem of cannot achieve effective interconnection between current Terahertz planar circuit, one kind is provided
Simple in structure, easy to process, plane interconnectivity is good, the Terahertz Novel clock surface wave power divider structure based on plane G lines.The structure
It can make the radio signal transmission that effective, low damage is realized between multiple Terahertz planar circuits, to improve terahertz signal
Transmitting and the efficiency received.
The above-mentioned purpose of the present invention can be achieved by the following technical programs, a kind of terahertz waveguide power dividers of, packet
It includes：The two slab guide metal tape Goubau lines and film for being overlapped transfer surface wave between the dielectric substrate of pressing, dielectric substrate
Resistance, it is characterised in that：The slab guide metal tape G lines of two dielectric substrates covering are flat to dielectric substrate by U-bend curved surface
Face both sides are symmetrically extended as two THz wave output ports, and film resistor is connected between U-shaped opening, isolation U-shaped opening it
Between two branch work(point output Terahertz radiofrequency signal, form two power splitter of terahertz waveguide.
The present invention has the advantages that compared with the prior art：
It is simple in structure, it is easy to process.The present invention is by the two metal tape lines and film resistor between dielectric substrate and dielectric substrate
The terahertz waveguide power divider of composition, using plane G lines as radiofrequency signal input structure in the form of, pass through the ring being lost with low absorption
Olefin copolymer (COC) is transmitted as base material double clad dielectric material, exports two tunnel radiofrequency signals.It is simple in structure,
It is easy to process..Due to may be used printed board technique processing, have the advantages that low cost, process it is simple, and be easy to it is micro-
The planar circuits such as band circuit are integrated.Since the power splitter is designed using substrate integration wave-guide, electromagnetic wave is in substrate integration wave-guide
It is propagated in closing metal waveguide, therefore it can be additionally used in the multilayered structures such as low-temperature co-fired ceramics.Current Terahertz can be overcome
Planar circuit generally uses microstrip structure or suspends the defect of microstrip structure.The structure type of plane G lines itself can be utilized
It is particularly suitable for being interconnected with micro-strip, can be very good the planar transmission for solving the problems, such as terahertz signal.Which solves terahertzs
The hereby transmission problem of signal.It is guided wave structure relative to Terahertzs such as currently proposed co-planar waveguide, planar waveguide, medium optical fiber,
Its structure is more simple, and size bigger in contrast, is thus more readily processed realization, existing single to solve
The guided wave structure manufacturing process of Terahertz of structure type requires height, practical application more difficult, it is difficult to the problems such as processing.
Stiffness of coupling is high.The present invention realizes terahertz signal transmission using dielectric substrate covering surface wave planar transmission line,
Between the energy efficient of terahertz signal is coupled in dielectric layer, stronger energy accumulating characteristic is obtained, Terahertz is reduced
Signal is present in the radiation loss of exterior space, and two road work(of Terahertz is improved by the film resistor being connected between U-shaped opening
Divide the isolation between output radiofrequency signal.Efficient coupling can be realized with external Terahertz planar circuit or antenna structure,
Improve the transmitting of terahertz signal and the efficiency received.Meanwhile it can be come excellent by the size and material parameter of change dielectric substrate
Change the dielectric loss of power splitter；By adjusting the size of metal tape line, to optimize the configured transmission of power splitter；By adjusting film
The position of resistance and resistance value can optimize the isolation between two power splitter output signal of Terahertz..This two-layered medium substrate
Input power disposably can be divided into the two-way of constant amplitude reverse phase or four tunnels export by the integrated one-to-two power splitter constituted.Power from
The substrate on upper layer inputs, and passes through the metal layer slot-coupled between two layers of substrate to underlying basal.Positioned at the output of underlying basal
Signal exports in opposite direction, the phase difference with 180 degree between two-way output.The power splitter in wider bandwidth have compared with
Small Insertion Loss and the excellent output degree of balance, and have many advantages, such as easy to process, low cost, be convenient for and planar circuit is integrated.
Conductor losses is small.The present invention is flat to dielectric substrate by U-bend curved end point in the metal tape G lines of two dielectric substrates
Face both sides are symmetrically extended as two THz wave output ports, between film resistor is connected to U-shaped opening, isolation U-shaped opening
Between two branch work(point output Terahertz radiofrequency signal, form two power splitter of Terahertz surface wave transmission line, surface wave plane
The conductor losses of waveguide is small, can preferably realize the effective interconnection between Terahertz frequency range planar circuit, can be by Terahertz
The energy efficient of signal is coupled in inner dielectric layer, obtains stronger energy accumulating characteristic, reduces terahertz signal presence
In the radiation loss of exterior space, high efficiency of transmission can be realized with external Terahertz planar circuit or antenna structure.As a result table
It is bright:Such power splitter not will produce higher mode, and energy can be correctly assigned to two output ports, only seldom energy damage
It loses, the Insertion Loss of each output port is about 3.54dB.Optimum structural parameter can make the fundamental mode confinement losses within the scope of 1~10THz small
In 0.1dB/m, second order mode limitation loss is more than 1dB/m.Therefore can obtain 1~10THz broadband single mode transport and
Group velocity dispersion can be controlled at ± 0.1ps/ (THzcm) in 1.5~10THz.
Description of the drawings
Fig. 1 is the Terahertz surface wave structure schematic diagram the present invention is based on plane G lines.
In figure：1 dielectric substrate, 2 slab guide metal tape G lines, 3 film resistors.
Specific implementation mode
Refering to fig. 1.In the embodiment described below, a kind of terahertz waveguide power divider based on plane G lines, including：Two
The slab guide metal tape Goubau lines 2 and film resistor of transfer surface wave between a dielectric substrate 1 for being overlapped pressing, dielectric substrate
3.The slab guide metal tape G lines 2 of two dielectric substrates 1 covering, it is symmetrical to 1 plane both sides of dielectric substrate by U-bend curved surface
Two THz wave output ports are extended to, film resistor 3 is connected between U-shaped opening, and two branch work(between U-shaped opening are isolated
Divide the Terahertz radiofrequency signal of output, forms two power splitter of Terahertz.THz wave is golden from connection U-shaped sealing end plane waveguide
Belong to one end input port with G lines 2 and input two power splitter of Terahertz, from two output port outlet output two road work(of Terahertz point
Export radiofrequency signal.THz wave is inputted from one end of slab guide metal tape G lines, from other end slab guide metal tape G lines
Two outlet output, formed two power splitter of Terahertz.This Terahertz surface wave power divider structure based on plane G lines can be with
Efficient coupling is realized with external Terahertz planar circuit or antenna structure, improves the transmitting of terahertz signal and the effect received
Rate.It can be by the size and material parameter of change dielectric substrate, to optimize the dielectric loss of power splitter；By adjusting metal tape line
Size, to optimize the configured transmission of power splitter；Position by adjusting film resistor and resistance value can optimize two work(of Terahertz
Divide the isolation between device output signal.THz wave is defeated from the one end of connection U-shaped sealing end plane waveguide metal with G lines 2
Inbound port inputs, from two output port outlet output two road work(of Terahertz point output radiofrequency signals.
Change size and the material parameter of two dielectric substrates 1 to optimize the dielectric loss of power splitter.
With the size of the wavelength adjustment slab guide metal tape G lines 2 of a quarter, power splitter is optimized by using simulation software
S parameter in working frequency range.
In simulation software adjust film resistor 3 position and resistance value, take adjustment 3 resistance value of film resistor be 50 ohm or
100 ohm, optimize the isolation between two power splitter output signal of Terahertz.
Following steps can be used in present invention specific implementation：
First according to required Terahertz working frequency range, select polytetrafluoroethylene (PTFE) and quartz as dielectric substrate material, utilization is micro-
Wave circuit CASE(Computer Aided Software Engineering) establishes the structural model of Fig. 1, working frequency range is set in simulation software and in working frequency range
S parameter simulation objectives, by the Optimized Program of software, so that it is determined that each unit linear electrical parameter.
The Terahertz surface wave power splitter based on plane G lines that the present invention is applied to Terahertz frequency range can be with fin line and micro-
Band is interconnected, and the work(point output radiofrequency signal between two tunnels is isolated by film resistor 3, makes THz wave from slab guide gold
Belong to one end input with G lines 2, from two outlet outputs of other end slab guide metal tape G lines 2, can solve engineering and answer
With the problem for realizing interconnection between middle Terahertz planar circuit.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (5)
1. a kind of terahertz waveguide power divider, including：Two are overlapped transfer surface wave between the dielectric substrate (1) of pressing, dielectric substrate
Slab guide metal tape G lines (2) and film resistor (3), it is characterised in that：The slab guide of two dielectric substrates (1) covering
Metal tape G lines (2) are symmetrically extended to dielectric substrate (1) plane both sides as two THz wave output ends by U-bend curved surface
Mouthful, film resistor (3) is connected between U-shaped opening, and the Terahertz radio frequency letter of two branch work(point output between U-shaped opening is isolated
Number, form two power splitter of Terahertz.
2. terahertz waveguide power divider as described in claim 1, it is characterised in that：THz wave is flat from connection U-shaped sealing end
Surface wave leads one end input port input of metal tape G lines (2), from two output port outlet output two road work(of Terahertz point outputs
Radiofrequency signal.
3. terahertz waveguide power divider as described in claim 1, it is characterised in that：Change two dielectric substrates (1) size and
Material parameter optimizes the dielectric loss of power splitter.
4. terahertz waveguide power divider as described in claim 1, it is characterised in that：Slab guide is adjusted with the wavelength of a quarter
The size of metal tape G lines (2) optimizes S parameter of the power splitter in working frequency range by using simulation software.
5. terahertz waveguide power divider as described in claim 1, it is characterised in that：Film resistor (3) is adjusted in simulation software
Position and resistance value, take adjustment film resistor (3) resistance value be 50 ohm or 100 ohm, optimization two power splitter of Terahertz output
Isolation between signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810143507.0A CN108511867A (en) | 2018-02-12 | 2018-02-12 | Terahertz waveguide power splitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810143507.0A CN108511867A (en) | 2018-02-12 | 2018-02-12 | Terahertz waveguide power splitter |
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| Publication Number | Publication Date |
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| CN108511867A true CN108511867A (en) | 2018-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810143507.0A Pending CN108511867A (en) | 2018-02-12 | 2018-02-12 | Terahertz waveguide power splitter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109546275A (en) * | 2018-12-07 | 2019-03-29 | 中国船舶重工集团公司第七二四研究所 | A kind of high-performance isomery cavity Terahertz duplexer |
| CN115411482A (en) * | 2022-09-08 | 2022-11-29 | 中国电子科技集团公司第五十五研究所 | Terahertz waveguide power combiner |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040050747A (en) * | 2002-12-09 | 2004-06-17 | 한국전자통신연구원 | Wilkinson power divider with compensation capacitor/inductor |
| CN105428769A (en) * | 2015-11-16 | 2016-03-23 | 中国电子科技集团公司第十研究所 | Terahertz-frequency-band plane interconnection guide wave structure |
-
2018
- 2018-02-12 CN CN201810143507.0A patent/CN108511867A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040050747A (en) * | 2002-12-09 | 2004-06-17 | 한국전자통신연구원 | Wilkinson power divider with compensation capacitor/inductor |
| CN105428769A (en) * | 2015-11-16 | 2016-03-23 | 中国电子科技集团公司第十研究所 | Terahertz-frequency-band plane interconnection guide wave structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109546275A (en) * | 2018-12-07 | 2019-03-29 | 中国船舶重工集团公司第七二四研究所 | A kind of high-performance isomery cavity Terahertz duplexer |
| CN115411482A (en) * | 2022-09-08 | 2022-11-29 | 中国电子科技集团公司第五十五研究所 | Terahertz waveguide power combiner |
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Application publication date: 20180907 |