CN108336467A - The super slow wave plane microwave delay line of binary cycle surface phasmon - Google Patents
The super slow wave plane microwave delay line of binary cycle surface phasmon Download PDFInfo
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- CN108336467A CN108336467A CN201810124260.8A CN201810124260A CN108336467A CN 108336467 A CN108336467 A CN 108336467A CN 201810124260 A CN201810124260 A CN 201810124260A CN 108336467 A CN108336467 A CN 108336467A
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- surface phasmon
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P9/00—Delay lines of the waveguide type
- H01P9/006—Meander lines
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P9/00—Delay lines of the waveguide type
- H01P9/04—Interdigital lines
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Abstract
A kind of super slow wave plane microwave delay line of binary cycle surface phasmon includes medium substrate (1), the surface phasmon transmission line (2) being arranged on medium substrate (1) and co-planar waveguide to surface phasmon transmission line transition (3)；The both ends of surface phasmon transmission line (2) are connected with two co-planar waveguides to surface phasmon transmission line transition (3) respectively, surface phasmon transmission line (2) is the transmission line of double periodic structure, groove (21) array of inside groove (20) array and rectangle that arrange rectangle of surface phasmon transmission line (2)；Higher cutoff frequency of the working frequency range of delay line close to surface phasmon transmission line (2).Time delay of the delay line in working band is uniform, mutual coupling is small and size is small；Delay line is planar structure, can be bent, be easily integrated, low manufacture cost.
Description
Technical field
The present invention relates to a kind of microwave delay line, especially a kind of super slow wave plane microwave of binary cycle surface phasmon prolongs
Slow line.
Background technology
Delay line is a kind of common microwave passive components, is used for phased array and pulse compression system.Delay line can prolong
The time that slow signal passes through itself.Due to electromagnetic transmission speed quickly, usually require that the size of delay line is small, so as to small
Size provides time delay as long as possible.If signal just needs 300 with light velocity propagation in air, the time delay of 1 microsecond
The long delay line of rice.In order to reduce the size of delay line, it usually needs reduce signal delay line spread speed, and postpone
Line wants folding up for a section.For microwave signal delay common delay line have lumped parameter inductance capacitance delay line,
Supersonic delay line, microwave transmission line delay line and fibre delay line etc..The inductance capacitance delay line working frequency of lumped parameter
It is low.The transducer architecture of supersonic delay line is complicated, with system device is easy of integration, working frequency is not high.Fibre delay line has
Have the advantages that with wide, low, the anti-interference, good confidentiality of loss, but the structure of fibre delay line is not considerably complicated easy of integration, cost
It is higher.Common microwave transmission line delay line has microstrip line delay line, co-planar waveguide delay line and strip line delay line etc., but
In these delay lines, the main mould of electromagnetic wave is that TEM moulds or quasi- TEM moulds, the spread speed of signal are still higher so that delay line
Size or bigger.And due to being two conductor transmission line, the lateral dimension of transmission line is larger, the mutual coupling of adjacent transmission lines
It is relatively strong.When these factors make delay line fold, the distance of adjacent delay line cannot be too close.
Invention content
Technical problem:The purpose of the present invention is to propose to a kind of super slow wave plane microwave delays of binary cycle surface phasmon
Line, the delay line are uniconductor structures, and signal is propagated with slow wave, and the mutual coupling of the adjacent delay line of folding is small, can be bent, be convenient for
It is integrated, low manufacture cost.
Technical solution：A kind of super slow wave plane microwave delay line of binary cycle surface phasmon of the present invention includes medium base
Plate, the surface phasmon transmission line being arranged on medium substrate and co-planar waveguide are to surface phasmon transmission line transition；It is situated between
One face metal layer of matter substrate, metal layer constitute surface phasmon transmission line and co-planar waveguide to surface phasmon transmission line
Transition；The both ends of surface phasmon transmission line are connected with two co-planar waveguides to surface phasmon transmission line transition respectively,
Surface phasmon transmission line is the transmission line of the periodic structure of binary cycle, along the center line of surface phasmon transmission line
The inside groove array of rectangle is arranged, there are the groove array of rectangle in the two sides of surface phasmon transmission line；Co-planar waveguide arrives
One end of surface phasmon transmission line transition is co-planar waveguide port, the metal of the center conduction band both sides of co-planar waveguide it is gradual
Open flare and far from center conduction band；In co-planar waveguide to the other end of surface phasmon transmission line transition, coplanar wave
The center conduction band led is connected with surface phasmon transmission line；Co-planar waveguide leans near surface to surface phasmon transmission line transition
The part of phasmon transmission line, there are several transition grooves of different depth in the center conduction band two sides of co-planar waveguide, in
The center line of heart conduction band is by several transition inside grooves of different sizes；The super slow wave plane microwave delay line of binary cycle surface phasmon
Working frequency range close to surface phasmon transmission line higher cutoff frequency.
As the shape of groove, the depth of transition groove is arrived with reducing co-planar waveguide the shape of transition groove from shallow to deep
The reflection of surface phasmon transmission line transition, the depth close to the transition groove of surface phasmon transmission line are most deep and close
The depth of groove；For the shape of transition inside groove as the shape of inside groove, the size of transition inside groove is ascending to reduce coplanar wave
Lead the reflection of surface phasmon transmission line transition, it is maximum close to the size of the transition inside groove of surface phasmon transmission line and
Close to the size of inside groove.
The super slow wave plane microwave of binary cycle surface phasmon can be changed by changing the length of surface phasmon transmission line
The time delay of delay line；Change the spacing, the depth of groove, adjacent internal grooves center at surface phasmon transmission line adjacent grooves center
Spacing, the size of inside groove can change the working frequency of the super slow wave plane microwave delay line of binary cycle surface phasmon.
The length of co-planar waveguide to surface phasmon transmission line transition is more than five operation wavelengths, transition groove and transition
The quantity of inside groove is all higher than five, to reduce reflection.
The spacing of adjacent transition groove center is identical as the spacing at two adjacent grooves centers；Groove center in adjacent transition
Spacing is identical as the spacing at two adjacent internal grooves centers.
The size of inside groove, the spacing for adjusting adjacent internal grooves center, the ratio with the spacing at two adjacent grooves centers so that
Time delay of the super slow wave plane microwave delay line of binary cycle surface phasmon in working band is as equal as possible.
Surface phasmon transmission line is a kind of periodic slow wave transmission line, and is band-pass transmissions line.Electromagnetism wave frequency
For rate closer to the higher cutoff frequency of surface phasmon transmission line, the speed propagated is slower, the delay time of unit length
It is longer.The working frequency range of the super slow wave plane microwave delay line of binary cycle surface phasmon is close to surface phasmon transmission line
Higher cutoff frequency, the size of delay line can be allow to be substantially reduced in this way.
Surface phasmon transmission line is a kind of slow wave transmission line of binary cycle, and the length in one of them period is exactly adjacent
The spacing of interior groove center, the length in another period are exactly the spacing at adjacent grooves center.Periodic inside groove array can be adjusted
The shape of surface phasmon dispersion on transmission lines curve is saved, inside groove is bigger, and the degree of adjusting is bigger, therefore can adjust inside groove
Size and adjust two periods relative size can adjust surface phasmon transmission line dispersion curve shape,
So that the time delay of delay line is as consistent as possible in working frequency range.
Surface phasmon transmission line is a kind of uniconductor surface wave transmission line, and the electromagnetic wave of transmission is by constraint tightly
In the neighbour of surface phasmon transmission line, therefore even if close proximity, between adjacent two surface phasmon transmission lines
Mutual coupling very little.In this way surface phasmon transmission line can transmission lines more other than microstrip line etc. it is closer bending arrangement, with
Reduce the volume of the super slow wave plane microwave delay line of binary cycle surface phasmon.
Surface phasmon transmission line is a kind of uniconductor surface wave transmission line, and the thickness of impedance and medium substrate is basic
It is unrelated, therefore very thin medium substrate may be used, it can not only reduce the volume, weight and cost of delay line, but also whole
A medium substrate is also easy to be bent, and the flexibility used is strong.
The super slow wave plane microwave delay line of binary cycle surface phasmon is planar structure, is easy to and the other components of system
It is integrated, realize miniaturization.
Advantageous effect：The advantageous effect of the super slow wave plane microwave delay line of binary cycle surface phasmon of the present invention is,
The delay line is the surface phasmon transmission line structure of uniconductor, and signal is not only tightly constrained in conductor neighbour so that folding
The mutual coupling of folded adjacent delay line is small, delay line can fold tightlier to reduce the size of delay line.And delay line works
In the frequency close to upper cut-off region of surface phasmon transmission line, electromagnetic wave propagation speed is very low, further reduces and prolongs
The size of slow line；Delay line is double periodic structure, and the time delay in working band is uniform；And the delay line is planar junction
Structure can be bent, can be integrated with other components in system, and the making of planar printed circuit board technique may be used, at low cost.
Description of the drawings
Fig. 1 is the super slow wave plane microwave delay-line structure schematic diagram of binary cycle surface phasmon；
Fig. 2 is the super slow wave plane microwave delay line schematic diagram of binary cycle surface phasmon of bending arrangement；
Have in figure：Medium substrate 1, surface phasmon transmission line 2, co-planar waveguide to surface phasmon transmission line transition
3, metal layer 10, inside groove 20, groove 21, co-planar waveguide 30, port 31, center conduction band 32, metal ground 33, transition groove 34 and mistake
Cross inside groove 35.
Specific implementation mode
The invention will be further described with reference to the accompanying drawings and examples.
Embodiment of the present invention is：A kind of super slow wave plane microwave delay line packet of binary cycle surface phasmon
Include medium substrate 1, the surface phasmon transmission line 2 that is arranged on medium substrate 1 and co-planar waveguide are passed to surface phasmon
Defeated line transition 3；One face metal layer 10 of medium substrate 1, metal layer 10 constitutes surface phasmon transmission line 2 and co-planar waveguide arrives
Surface phasmon transmission line transition 3；The both ends of surface phasmon transmission line 2 respectively with two co-planar waveguides to surface etc. from
Excimer transmission line transition 3 is connected, and surface phasmon transmission line 2 is the transmission line of the periodic structure of binary cycle, along surface
The center line of phasmon transmission line 2 arranges 20 array of inside groove of rectangle, and the two sides of surface phasmon transmission line 2 have
21 array of groove of rectangle；One end of co-planar waveguide to surface phasmon transmission line transition 3 is 30 port 31 of co-planar waveguide, altogether
Surface wave 33 gradually opens flares and far from center conduction band 32 with leading the metal of 30 32 both sides of center conduction band；In co-planar waveguide
To the other end of surface phasmon transmission line transition 3, center conduction band 32 and the surface phasmon transmission line 2 of co-planar waveguide 30
It is connected；Co-planar waveguide is to surface phasmon transmission line transition 3 close to the part of surface phasmon transmission line 2, co-planar waveguide
There are several transition grooves 34 of different depth in 30 32 two sides of center conduction band, along the center line of center conduction band 32 by size not
Same several transition inside grooves 35；The working frequency range of the super slow wave plane microwave delay line of binary cycle surface phasmon is close to surface etc.
Higher cutoff frequency from excimer transmission line 2.
For the shape of transition groove 34 as the shape of groove 21, the depth of transition groove 34 is coplanar to reduce from shallow to deep
Waveguide to surface phasmon transmission line transition 3 reflection, close to the depth of the transition groove 34 of surface phasmon transmission line 2
It is most deep and close to the depth of groove 21；The shape of transition inside groove 35 as the shape of inside groove 20, the size of transition inside groove 35 by
It is small to greatly to reduce reflection of the co-planar waveguide to surface phasmon transmission line transition 3, close to surface phasmon transmission line 2
The size of transition inside groove 35 is maximum and close to the size of inside groove 20.
The super slow wave plane microwave of binary cycle surface phasmon can be changed by changing the length of surface phasmon transmission line 2
The time delay of delay line；Change the spacing at 21 center of surface phasmon transmission line 2 adjacent grooves, the depth of groove 21, it is adjacent in
The spacing at 20 center of slot, the size of inside groove 20 can change the work of the super slow wave plane microwave delay line of binary cycle surface phasmon
Working frequency.
The length of co-planar waveguide to surface phasmon transmission line transition 3 is more than five operation wavelengths, 34 He of transition groove
The quantity of transition inside groove 35 is all higher than five, to reduce reflection.
The spacing at 34 center of adjacent transition groove is identical as the spacing at two 21 centers of adjacent grooves；Adjacent transition inside groove 35
The spacing at center is identical as the spacing at two 20 centers of adjacent internal grooves.
The size of inside groove 20, the spacing for adjusting 20 center of adjacent internal grooves, the ratio with the spacing at two 21 centers of adjacent grooves
Value so that time delay of the super slow wave plane microwave delay line of binary cycle surface phasmon in working band is as equal as possible.
Surface phasmon transmission line 2 is a kind of periodic slow wave transmission line, and is band-pass transmissions line.Electromagnetism wave frequency
For rate closer to the higher cutoff frequency of surface phasmon transmission line 2, the speed propagated is slower, the delay time of unit length
It is longer.The working frequency range of the super slow wave plane microwave delay line of binary cycle surface phasmon is close to surface phasmon transmission line
2 higher cutoff frequency can allow the size of delay line to be substantially reduced in this way.
Surface phasmon transmission line 2 is a kind of slow wave transmission line of binary cycle, and the length in one of them period is exactly phase
The spacing at 20 center of adjacent inside groove, the length in another period are exactly the spacing at 21 center of adjacent grooves.Periodic 20 gusts of inside groove
Row can adjust the shape of 2 dispersion curve of surface phasmon transmission line, and inside groove 20 is bigger, and the degree of adjusting is bigger, therefore
The size of inside groove 20, which can be adjusted, and adjust the relative size in two periods can adjust surface phasmon transmission line 2
The shape of dispersion curve so that the time delay of delay line is as consistent as possible in working frequency range.
Fig. 2 is the super slow wave plane microwave delay line schematic diagram of binary cycle surface phasmon of bending arrangement.Surface etc. from
Excimer transmission line 2 is a kind of uniconductor surface wave transmission line, transmission electromagnetic wave by tightly constrain in surface phasmon
The neighbour of transmission line 2, therefore even if close proximity, the mutual coupling very little between adjacent two surface phasmon transmission lines 2.This
Sample surface phasmon transmission line 2 can transmission lines more other than microstrip line etc. it is closer bending arrangement, to reduce binary cycle table
The volume of the super slow wave plane microwave delay line of face phasmon.
Surface phasmon transmission line 2 is a kind of uniconductor surface wave transmission line, the thickness base of impedance and medium substrate 1
This is unrelated, therefore very thin medium substrate 1 may be used, and can not only reduce the volume, weight and cost of delay line, but also
Entire medium substrate 1 is also easy to be bent, and the flexibility used is strong.
The super slow wave plane microwave delay line of binary cycle surface phasmon is planar structure, is easy to and the other components of system
It is integrated, realize miniaturization.
In technique, kinds of processes realization may be used in the super slow wave plane microwave delay line of binary cycle surface phasmon,
Both common printed circuit board (PCB) technique may be used, can also use low-temperature co-fired ceramics (LTCC) technique or CMOS,
The integrated circuit technologies such as Si substrates are realized.
According to the above, the present invention can be realized.
Claims (6)
1. a kind of super slow wave plane microwave delay line of binary cycle surface phasmon, it is characterised in that the delay line includes medium base
Plate（1）, be arranged in medium substrate（1）On surface phasmon transmission line（2）And co-planar waveguide is transmitted to surface phasmon
Line transition（3）；Medium substrate（1）A face metal layer（10）, metal layer（10）Constitute surface phasmon transmission line（2）With altogether
Surface wave leads surface phasmon transmission line transition（3）；Surface phasmon transmission line（2）Both ends respectively with two coplanar waves
Lead surface phasmon transmission line transition（3）It is connected, surface phasmon transmission line（2）It is the periodic structure of binary cycle
Transmission line, along surface phasmon transmission line（2）Center line arrange the inside groove of rectangle（20）Array, surface phasmon
Transmission line（2）Two sides have the groove of rectangle（21）Array；Co-planar waveguide is to surface phasmon transmission line transition（3）'s
One end is co-planar waveguide（30）Port（31）, co-planar waveguide（30）Center conduction band（32）The metal of both sides（33）Gradually open
Flare and separate center conduction band（32）；In co-planar waveguide to surface phasmon transmission line transition（3）The other end, it is coplanar
Waveguide（30）Center conduction band（32）With surface phasmon transmission line（2）It is connected；Co-planar waveguide is transmitted to surface phasmon
Line transition（3）Close to surface phasmon transmission line（2）Part, co-planar waveguide（30）Center conduction band（32）Two sides have not
With several transition grooves of depth（34）, along center conduction band（32）Center line by several transition inside grooves of different sizes
（35）；The working frequency range of the super slow wave plane microwave delay line of binary cycle surface phasmon is close to surface phasmon transmission line
（2）Higher cutoff frequency.
2. the super slow wave plane microwave delay line of a kind of binary cycle surface phasmon according to claim 1, feature exist
In the transition groove（34）Shape and groove（21）Shape it is the same, transition groove（34）Depth from shallow to deep with reduce
Co-planar waveguide is to surface phasmon transmission line transition（3）Reflection, close to surface phasmon transmission line（2）Transition groove
（34）Depth it is most deep and close to groove（21）Depth；Transition inside groove（35）Shape and inside groove（20）Shape it is the same, mistake
Cross inside groove（35）Size it is ascending to reduce co-planar waveguide to surface phasmon transmission line transition（3）Reflection, it is close
Surface phasmon transmission line（2）Transition inside groove（35）Size it is maximum and close to inside groove（20）Size.
3. the super slow wave plane microwave delay line of a kind of binary cycle surface phasmon according to claim 1, feature exist
In the surface phasmon transmission line（2）, changing its length, can to change the super slow wave plane of binary cycle surface phasmon micro-
The time delay of wave delay line；Change surface phasmon transmission line（2）Adjacent grooves（21）The spacing at center, groove（21）Depth
Degree, adjacent internal grooves（20）The spacing at center, inside groove（20）Size can change the super slow wave plane of binary cycle surface phasmon
The working frequency of microwave delay line.
4. the super slow wave plane microwave delay line of a kind of binary cycle surface phasmon according to claim 1, feature exist
In the surface phasmon transmission line transition（3）, co-planar waveguide to the surface phasmon transmission line transition（3）Length it is big
In five operation wavelengths, transition groove（34）With transition inside groove（35）Quantity be all higher than five, with reduce reflection.
5. the super slow wave plane microwave delay line of a kind of binary cycle surface phasmon according to claim 1, feature exist
In the transition groove（34）, adjacent transition groove（34）The spacing at center and two adjacent grooves（21）The spacing phase at center
Together；Adjacent transition inside groove（35）The spacing at center and two adjacent internal grooves（20）The spacing at center is identical.
6. the super slow wave plane microwave delay line of a kind of binary cycle surface phasmon according to claim 1, feature exist
In the inside groove（20）, adjust inside groove（20）Size, adjust adjacent internal grooves（20）The spacing at center and two adjacent grooves
（21）The ratio of the spacing at center so that the super slow wave plane microwave delay line of binary cycle surface phasmon is in working band
Time delay is as equal as possible.
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| CN201810124260.8A CN108336467B (en) | 2018-02-07 | 2018-02-07 | Double-period surface plasmon super-slow wave planar microwave delay line |
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| CN108962705A (en) * | 2018-07-30 | 2018-12-07 | 合肥工业大学 | A kind of rectangle double grid slow-wave structure with bielectron note channel |
| CN111082228A (en) * | 2020-01-02 | 2020-04-28 | 西安电子科技大学 | Slow wave substrate integrated waveguide H-plane horn antenna for millimeter wave communication system |
| CN114156615A (en) * | 2021-10-29 | 2022-03-08 | 杭州电子科技大学 | Foldable artificial surface plasmon low-pass filter |
| CN114709581A (en) * | 2022-05-31 | 2022-07-05 | 深圳小米通讯技术有限公司 | Electromagnetic wave transmission method, transmission line and terminal device |
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