CN105428770B - A kind of balanced type two-wire line - Google Patents
A kind of balanced type two-wire line Download PDFInfo
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- CN105428770B CN105428770B CN201510857089.8A CN201510857089A CN105428770B CN 105428770 B CN105428770 B CN 105428770B CN 201510857089 A CN201510857089 A CN 201510857089A CN 105428770 B CN105428770 B CN 105428770B
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- lamina reticularis
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- grid
- line
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Abstract
The present invention proposes a kind of balanced type two-wire line, including：Middle dielectric layer；And it is separately positioned on the first conductor lamina reticularis and the second conductor lamina reticularis of the middle dielectric layer upper and lower surface；Wherein, the figure of the first conductor lamina reticularis and the second conductor lamina reticularis corresponds to consistent with size, and the first conductor lamina reticularis and the netted fault of the second conductor open arrangement.The present invention can realize ultra-thin, and transmission performance is good, and the adjustable extent of characteristic impedance is big, and unit distance is lost low.
Description
Technical field
The present invention relates to microwave transmission line design fields, more particularly to be balanced type two-wire microwave transmission line.
Background technology
The features such as microwave transmission line is used for transmission microwave signal, should have loss relatively low, and characteristic impedance is adjustable.
Common microwave transmission line can be divided into waveguide, coaxial line, microstrip line, two-wire, co-planar waveguide, band-like in form
Line, line of rabbet joint etc..Wherein in addition to waveguide, the transmission line of other forms can be fabricated to various flexible transmission lines, presently, think
The transmission line for producing ultra-thin biography and practicality, then be difficult to.
The cross-sectional aspect ratio of flexible coaxial line is close to 1, and sectional area is too small if realizing ultra-thin effect, power capacity,
The indexs such as loss, vulnerability are all not proper.When microstrip line and strip line are realized in a manner of ultra-thin, then line width can be brought too narrow, be lost
Excessive problem.When co-planar waveguide and the transmission line of line of rabbet joint form are realized in a manner of ultra-thin, then accurate to dimension can be brought to want
Ask high, characteristic impedance be not easy to do it is low, it is irradiated more the problems such as.
Invention content
Technical problem to be solved by the invention is to provide a kind of balanced type two-wire lines, can realize ultra-thin, transmission
Performance is good, and the adjustable extent of characteristic impedance is big, and unit distance is lost low.
To solve the above problems, the present invention proposes a kind of balanced type two-wire line, including：Middle dielectric layer；And point
The first conductor lamina reticularis and the second conductor lamina reticularis in the middle dielectric layer upper and lower surface is not set；
Wherein, the figure of the first conductor lamina reticularis and the second conductor lamina reticularis corresponds to consistent with size, and described
One conductor lamina reticularis and the netted fault of the second conductor open arrangement.
According to one embodiment of present invention, the first conductor lamina reticularis and the second conductor lamina reticularis are rectangle net trellis
Band, the column direction of grid are the signal transmission direction of transmission line, and the line direction of grid is the line width direction of transmission line.
According to one embodiment of present invention, the distance that the first conductor lamina reticularis and the netted fault of the second conductor are opened is matched
It is set to, the distance that is staggered on grid column direction is less than the distance of a grid, and the distance that is staggered on grid line direction is less than one
The distance of grid.
According to one embodiment of present invention, the distance that the first conductor lamina reticularis and the netted fault of the second conductor are opened is matched
It is set to, be staggered half of grid on grid column direction, the distance that is staggered on grid line direction and in a column direction apart from identical.
According to one embodiment of present invention, the thickness of the middle dielectric layer is by the first conductor lamina reticularis and second
The line width and mesh density of the grid of conductor lamina reticularis determine, the line width and mesh density of the grid are according to the spy of transmission line
Sign impedance is configured.
According to one embodiment of present invention, the section thickness of middle dielectric layer is less than or equal to 0.1mm, and width is more than or equal to
10mm。
According to one embodiment of present invention, the base material of the middle dielectric layer is flexible dielectric material.
According to one embodiment of present invention, the middle dielectric layer is conventional polyimide film.
According to one embodiment of present invention, the first conductor lamina reticularis and the second conductor lamina reticularis are flexible metal net
Layer.
According to one embodiment of present invention, the base material of the first conductor lamina reticularis and the second conductor lamina reticularis is led for copper
Body.
After adopting the above technical scheme, the present invention has the advantages that compared with prior art：The transmission line of the present invention
Including middle dielectric layer and the first conductor lamina reticularis and the second conductor lamina reticularis on two surfaces of middle dielectric layer are set, first
Conductor lamina reticularis and the second conductor lamina reticularis are duplicate on figure and size, it may also be said to which the two is just the same
, it is only staggered when being arranged on middle dielectric layer, ensures transmission performance, due to the first conductor lamina reticularis and the second conductor lamina reticularis
For reticular structure, thus can with the line width of reasonable disposition grid and the density of mesh, obtain needed for characteristic impedance, be applicable in frequency range
Transmission line, loss is relatively low, and intermediate medium cross section can have big the ratio of width to height, ultra-thin to realize.
Description of the drawings
Fig. 1 is the cross section structure signal in the transmission line line width direction of the balanced type two-wire line of one embodiment of the invention
Figure；
Fig. 2 is the overlooking structure diagram of the balanced type two-wire line of Fig. 1 embodiments；
Fig. 3 is the cross section structure signal in the transmission line line width direction of the balanced type two-wire line of another embodiment of the present invention
Figure；
Fig. 4 is the overlooking structure diagram of the balanced type two-wire line of Fig. 3 embodiments；
Fig. 5 is the transmission line frequency response chart of the balanced type two-wire line of Fig. 3 embodiments.
Specific implementation mode
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, below in conjunction with the accompanying drawings to the present invention
Specific implementation mode be described in detail.
Many details are elaborated in the following description in order to fully understand the present invention.But the present invention can be with
Much implement different from other manner described here, those skilled in the art can be without prejudice to intension of the present invention the case where
Under do similar popularization, therefore the present invention is not limited to the specific embodiments disclosed below.
Referring to Fig. 1, in the present embodiment, a kind of balanced type two-wire line includes：Middle dielectric layer 1；And it sets respectively
Set the first conductor lamina reticularis 2 and the second conductor lamina reticularis 3 in 1 upper and lower surface of middle dielectric layer.The transmission of the present invention
Line is suitable for the microwave signal transmission of Microwave radio frequency system.
The base material of middle dielectric layer 1 can be the arbitrary dielectric material for being used for microwave transmission line, preferably, middle dielectric layer
1 base material can be flexible dielectric material.First conductor lamina reticularis 2 and the second conductor lamina reticularis 3 can also be by arbitrarily can
The conductor material of conducting transmission signal is made, and furthermore, the first conductor lamina reticularis 2 and the second conductor lamina reticularis 3 can select
It is selected as flexible metal stratum reticulare.Middle dielectric layer 1 and conductor lamina reticularis are fabricated from a flexible material, and can ensure the flexibility of transmission line
Effect, can plastic deformation, to which transmission line can be adapted for needing the microwave transmission system that reverses, such as the feeder line of foldable antenna
Deng.It will be appreciated that the making material of middle dielectric layer 1 and conductor lamina reticularis is not limited to this, flexible effect is not being considered
When fruit, flexible material can not also be used, or when considering other effects, the material with corresponding effect can also be used.
Referring to Fig. 1 and Fig. 2, wherein the figure and size of the first conductor lamina reticularis 2 and the second conductor lamina reticularis 3 correspond to one
It causes, which is not only overall dimensions, the same grid line width and mesh density for including reticular structure, it may also be said to which first leads
Body lamina reticularis 2 is identical with the specification of the second conductor lamina reticularis 3, and the first conductor lamina reticularis 2 and the second conductor lamina reticularis 3 are just
To being staggeredly arranged, the size of distance and reticular structure that figure is staggered according to required characteristic impedance, can be applicable in frequency in design
Duan Jinhang flexible configurations, thus the grid line width of adjusting conductor lamina reticularis and mesh density just can adjust transmission and limit feature
Impedance and applicable frequency range, for relatively existing transmission line, the adjustable extent of characteristic impedance is big, and characteristic impedance is in certain model
When enclosing interior, 1 cross section of middle dielectric layer of transmission line can have big the ratio of width to height, realize ultra-thin transmission line, and transmit
The width of line will not be too narrow, and the unit distance loss of transmission line is relatively low, and transmission performance is good.
Specifically, the first conductor lamina reticularis 2 and the second conductor lamina reticularis 3 are rectangle net trellis band, the column direction of grid
For the signal transmission direction of transmission line, the line direction of grid is the line width direction of transmission line, that is to say, that the arrangement of grid is rule
Determinant arrangement then is considered as the lattice-shaped band of rule, and the shape of grid is rectangle, and grid is rectangle then in conductor mesh
Shape layer makes, and when being designed calculating according to specified impedance, all can be more convenient.
The thickness of middle dielectric layer 1 by its upper and lower surface the first conductor lamina reticularis 2 and the second conductor lamina reticularis 3 grid
Line width and mesh density determine, the line width and mesh density of grid are matched according to the actually required characteristic impedance of transmission line
It sets, grid line width refers to the width of the grid lines between two mesh, for specified transmission line characteristic impedance, conductor lamina reticularis
Grid line width is wider, the dielectric thickness of mesh more close then middle dielectric layer 1 is bigger, can be in certain characteristic-impedance range
The relatively narrow and/or mesh that grid line width is configured is sparse, realizes the ultra-thin effect of middle dielectric layer 1, and middle dielectric layer
1 width can be wider.
By the way that the first conductor lamina reticularis 2 and the second conductor lamina reticularis 3 is reasonably arranged, the section of middle dielectric layer 1 can
Accomplish that thickness is less than or equal to 0.1mm, width is more than or equal to 10mm, realizes that cross section is ultra-thin and has big the ratio of width to height, in the model
Interior transmission line is enclosed, tens ohm to hundreds of ohm of characteristic impedance may be implemented, the adjustable extent of characteristic impedance is big, and does not increase
Add the damage of transmission line, can accomplish compared with low-loss.
Preferably, the distance that the first conductor lamina reticularis 2 and the second conductor lamina reticularis 3 are staggered is configured to, in grid column direction
On be staggered distance be less than a grid distance, be staggered on grid line direction distance be less than a grid distance.More preferably,
The distance that first conductor lamina reticularis 2 and the second conductor lamina reticularis 3 are staggered is configured to, and be staggered half of grid on grid column direction,
The distance that is staggered on grid line direction and in a column direction apart from identical.By adjusting a conductor lamina reticularis 2 and the second conductor mesh
The distance that shape layer 3 is staggered adjusts the transmission performance of transmission line.
Referring to Fig. 3 and Fig. 4, in the present embodiment, middle dielectric layer 1 uses conventional polyimide film, the first conductor mesh
The base material of shape layer 2 and the second conductor lamina reticularis 3 uses copper conductor, more specifically copper foil, the first conductor lamina reticularis 2 and the second conductor
The filament that lamina reticularis 3 is parallel to the signal transmission direction of transmission line is 4, that is, has 3 row grids, filament width 0.2mm, carefully
Line centre-to-centre spacing 2.8mm；The filament in the line width direction that the first conductor lamina reticularis 2 and the second conductor lamina reticularis 3 are parallel to transmission line is wide
Spend 0.4mm, filament centre-to-centre spacing 2.6mm；The conductor lamina reticularis overall width 8.6mm of transmission line unilateral side；First conductor lamina reticularis 2 and
Two conductor lamina reticularises 3 misplace 1.3mm respectively in the line width direction of transmission line and signal transmission direction, that is, in the row side of grid
To with the 1.3mm that misplaces on column direction；Configured in this way first conductor lamina reticularis 2 and the second conductor lamina reticularis 3, middle dielectric layer 1
Thickness can accomplish that 0.05mm, characteristic impedance are 50 Europe.
It is the transfer curve of transmission line referring to Fig. 5, S11, S12 is the coverage diagram of transmission line, in this implementation
In example, in the microwave frequency range of 200MHz~2GHz, S11 is respectively less than -10dB, and signal decaying is small, and transmission performance is good, according to
Coverage diagram, in certain microwave frequency range, loss is relatively low.
Although the present invention is disclosed as above with preferred embodiment, it is not for limiting claim, any this field
Technical staff without departing from the spirit and scope of the present invention, can make possible variation and modification, therefore the present invention
Protection domain should be subject to the range that the claims in the present invention are defined.
Claims (9)
1. a kind of balanced type two-wire line, which is characterized in that including：Middle dielectric layer；And it is separately positioned on the centre
The the first conductor lamina reticularis and the second conductor lamina reticularis of dielectric layer upper and lower surface；
Wherein, the figure of the first conductor lamina reticularis and the second conductor lamina reticularis corresponds to consistent with size, and described first leads
Body lamina reticularis and the netted fault of the second conductor open arrangement；First conductor lamina reticularis and the second conductor lamina reticularis can be conductive and transmit
Signal；First conductor lamina reticularis and the second conductor lamina reticularis are rectangle net trellis band, and the column direction of grid is the letter of transmission line
Number transmission direction, the line direction of grid are the line width direction of transmission line.
2. balanced type two-wire line as described in claim 1, which is characterized in that the first conductor lamina reticularis and second is led
The distance that body lamina reticularis is staggered is configured to, and the distance that is staggered on grid column direction is less than the distance of a grid, in mesh row side
The distance that is staggered upwards is less than the distance of a grid.
3. balanced type two-wire line as claimed in claim 2, which is characterized in that the first conductor lamina reticularis and second is led
The distance that body lamina reticularis is staggered is configured to, and be staggered half of grid on grid column direction, the distance that is staggered on grid line direction and
In a column direction apart from identical.
4. balanced type two-wire line as described in claim 1, which is characterized in that the thickness of the middle dielectric layer is by described
Line width and the mesh density decision of the grid of first conductor lamina reticularis and the second conductor lamina reticularis, the line width and net of the grid
Hole density is configured according to the characteristic impedance of transmission line.
5. balanced type two-wire line as described in claim 1, which is characterized in that the section thickness of middle dielectric layer be less than etc.
In 0.1mm, width is more than or equal to 10mm.
6. balanced type two-wire line as described in claim 1, which is characterized in that the base material of the middle dielectric layer is flexibility
Dielectric material.
7. balanced type two-wire line as claimed in claim 6, which is characterized in that the middle dielectric layer is that conventional polyamides is sub-
Amine film.
8. balanced type two-wire line as claimed in claim 6, which is characterized in that the first conductor lamina reticularis and second is led
Body lamina reticularis is flexible metal stratum reticulare.
9. balanced type two-wire line as claimed in claim 8, which is characterized in that the first conductor lamina reticularis and second is led
The base material of body lamina reticularis is copper conductor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510857089.8A CN105428770B (en) | 2015-11-30 | 2015-11-30 | A kind of balanced type two-wire line |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510857089.8A CN105428770B (en) | 2015-11-30 | 2015-11-30 | A kind of balanced type two-wire line |
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| Publication Number | Publication Date |
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| CN105428770A CN105428770A (en) | 2016-03-23 |
| CN105428770B true CN105428770B (en) | 2018-10-23 |
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| CN108270059A (en) * | 2017-12-15 | 2018-07-10 | 深圳密卡思科技有限公司 | A kind of low loss line for millimeter wave chip |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1221517A (en) * | 1996-03-25 | 1999-06-30 | 三星电子株式会社 | Bidirectional non-solid impedance controlled reference plane |
| CN104798248A (en) * | 2013-01-23 | 2015-07-22 | 株式会社村田制作所 | Transmission line and electronic device |
-
2015
- 2015-11-30 CN CN201510857089.8A patent/CN105428770B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1221517A (en) * | 1996-03-25 | 1999-06-30 | 三星电子株式会社 | Bidirectional non-solid impedance controlled reference plane |
| CN104798248A (en) * | 2013-01-23 | 2015-07-22 | 株式会社村田制作所 | Transmission line and electronic device |
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