CN210668637U - High-folding-resistance radio frequency strip transmission line - Google Patents
High-folding-resistance radio frequency strip transmission line Download PDFInfo
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- CN210668637U CN210668637U CN201921405485.7U CN201921405485U CN210668637U CN 210668637 U CN210668637 U CN 210668637U CN 201921405485 U CN201921405485 U CN 201921405485U CN 210668637 U CN210668637 U CN 210668637U
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Abstract
The utility model discloses a radio frequency strip transmission line of high resistant book, including first substrate layer and second substrate layer, at least one substrate layer is provided with the one deck air bed on radio frequency strip transmission line's the district of bending in first substrate layer and the second substrate layer. The utility model discloses an at least one substrate layer is provided with the one deck air bed in first substrate layer and the second substrate layer on the district of bending of radio frequency strip transmission line, because the dielectric constant of air bed and the more general medium of loss factor are all low, are a good radio frequency transmission medium, and the air bed can effectually reduce the individual layer stress concentration point when bending simultaneously, has improved radio frequency strip transmission line's the performance of bending greatly to satisfy application and the overall arrangement of radio frequency framework on folding equipment.
Description
Technical Field
The utility model relates to a transmission line field, in particular to radio frequency strip transmission line of high resistant book.
Background
With the development of large screens of mobile terminal screens and the maturity of folding screen technologies, more and more terminal devices begin to use folding screens, such as folding mobile phones, folding tablet computers or folding watches. However, the conventional rf strip line cannot meet the requirement of being folded 10 ten thousand times or 20 ten thousand times, so the folding device cannot connect the folding portion with the conventional rf strip line, thereby limiting the application and layout of the rf architecture on the folding device.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: the radio frequency strip transmission line with high folding endurance is provided to overcome the problem of poor bending performance of the existing radio frequency strip transmission line.
In order to solve the technical problem, the utility model discloses a technical scheme be:
the utility model provides a radio frequency strip transmission line of high resistant book, includes first substrate layer and second substrate layer, first substrate layer with at least one substrate layer is in the second substrate layer be provided with the one deck air bed in the district of bending of radio frequency strip transmission line.
Furthermore, any one of the first substrate layer and the second substrate layer is provided with an air layer in the bending area of the radio frequency strip transmission line.
Further, the first substrate layer with the second substrate layer is all in be provided with the one deck air bed on the district of bending of radio frequency strip transmission line.
Further, still include the radio frequency signal layer, the radio frequency signal layer is located between first substrate layer and the second substrate layer.
Further, on the bending region of the radio frequency strip transmission line, the first air layer of the first base material layer is located in the first base material layer, and the second air layer on the second base material layer is located in the second base material layer.
Further, still include upper ground layer and lower ground layer, upper ground layer is located the one side of keeping away from the second substrate layer on the first substrate layer, lower ground layer is located the one side of keeping away from the first substrate layer on the second substrate layer.
The beneficial effects of the utility model reside in that: the utility model provides a radio frequency strip transmission line of high resistant book, at least one substrate layer is provided with the one deck air bed in radio frequency strip transmission line's bending district in first substrate layer and the second substrate layer, because the dielectric constant of air bed and the more general medium of loss factor are all low, be a good radio frequency transmission medium, the air bed can effectual when having reduced bending individual layer stress concentration point simultaneously, the performance of bending of radio frequency strip transmission line has been improved greatly, in order to satisfy application and the overall arrangement of radio frequency framework on folding equipment.
Drawings
Fig. 1 is a schematic perspective view of a radio frequency strip transmission line with high folding endurance according to an embodiment of the present invention;
fig. 2 is a schematic cross-sectional view of a non-bending region according to an embodiment of the present invention;
fig. 3 is a schematic cross-sectional view of a bending region according to an embodiment of the present invention;
fig. 4 is a schematic cross-sectional view of another direction of the bending region according to an embodiment of the present invention;
fig. 5 is a perspective view of a conventional rf strip line.
Description of reference numerals:
1. an upper ground plane; 2. a first base material layer; 3. a first air layer; 4. a radio frequency signal layer; 5. a second substrate layer; 6. a second air layer; 7. connecting the ground layer; 8. a bending region; 9. a non-bending region.
Detailed Description
In order to explain the technical content, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
Referring to fig. 1 to 5, a highly folding-resistant rf strip transmission line includes a first substrate layer and a second substrate layer, where at least one of the first substrate layer and the second substrate layer is provided with an air layer in a bending region of the rf strip transmission line.
From the above description, the beneficial effects of the present invention are: at least one substrate layer is provided with the one deck air bed in first substrate layer and the second substrate layer on the district of bending of radio frequency strip transmission line, because the dielectric constant of air bed and the more general medium of loss factor are all low, are good radio frequency transmission medium, the air bed can effectually reduce the individual layer stress concentration point when bending simultaneously, has improved radio frequency strip transmission line's bending performance greatly to satisfy application and the overall arrangement of radio frequency framework on folding equipment.
Furthermore, any one of the first substrate layer and the second substrate layer is provided with an air layer in the bending area of the radio frequency strip transmission line.
From the above description, it can be seen that a preferred technical solution is provided, if the air layer on one side can meet the bending requirement, the air layer on one side can reduce the processing difficulty.
Further, the first substrate layer with the second substrate layer is all in be provided with the one deck air bed on the district of bending of radio frequency strip transmission line.
From the above description, the bending performance of the radio frequency strip transmission line is positively correlated to the thickness thereof, and is influenced by the bending stress of the radio frequency strip transmission line, the thicker the thickness is, the poorer the bending performance is, and the thickness of a single layer and the thickness of the whole are reduced by arranging air layers on both sides, so that the stress generated during bending is reduced, and the bending performance is greatly enhanced; in addition, the performance of the band-shaped radio frequency transmission line can be improved by arranging 2 air layers.
Further, still include the radio frequency signal layer, the radio frequency signal layer is located between first substrate layer and the second substrate layer.
As can be seen from the above description, the radio frequency signal layer is located in the middle, i.e. between the first substrate layer and the second substrate layer, to make the radio frequency signal transmission stable.
On the district of bending of radio frequency strip transmission line, the first air bed of first substrate layer is located in the first substrate layer, the second air bed on the second substrate layer is located in the second substrate layer.
From the above description, if the air layer directly contacts with the rf signal layer, the air layer oxidizes and corrodes the rf signal layer to affect the performance, and if there is no base material above the rf signal layer, the bending performance is not released, which affects the performance and the service life.
Further, still include upper ground layer and lower ground layer, upper ground layer is located the one side of keeping away from the second substrate layer on the first substrate layer, lower ground layer is located the one side of keeping away from the first substrate layer on the second substrate layer.
As can be seen from the above description, grounding is performed by the ground layers on both sides.
Referring to fig. 1 to 5, a first embodiment of the present invention is:
the embodiment is suitable for the radio frequency strip transmission line which needs to be folded, wherein the radio frequency strip transmission line is applied to folding equipment.
A highly folding-resistant rf strip transmission line, as shown in fig. 3, in this embodiment, the rf strip transmission line in the non-bending region 9 sequentially includes: the antenna comprises an upper grounding layer 1, a first base material layer 2, a radio frequency signal layer 4, a second base material layer 5 and a lower grounding layer 7. That is, the upper ground layer 1 is located on the first substrate layer 2 and away from one side of the second substrate layer 5, the lower ground layer 7 is located on the second substrate layer 5 and away from one side of the first substrate layer 2, and the radio frequency signal layer 4 is located between the first substrate layer 2 and the second substrate layer 5.
In order to improve the bending performance of the radio frequency strip transmission line, at least one substrate layer of the first substrate layer 2 and the second substrate layer 5 is provided with an air layer on the bending area 8 of the radio frequency strip transmission line.
In the present embodiment, as shown in fig. 2 and 3, the first substrate layer 2 and the second substrate layer 5 are both provided with an air layer on the bending region 8 of the rf strip transmission line. The first air layer 3 on the first substrate layer 2 is located in the first substrate layer 2, and the second air layer 6 on the second substrate layer 5 is located in the second substrate layer 5.
As shown in fig. 5, compared with the existing rf strip transmission line, in this embodiment, the existing two-layer substrate layer is changed into four-layer substrate layer and two-layer air layer, so as to reduce the thickness of a single layer, thereby reducing the stress generated during bending and greatly enhancing the bending performance; meanwhile, the performance of the band-shaped transmission radio frequency transmission line can be improved.
In this embodiment, the substrate layer is a radio frequency transmission medium, and the upper ground layer 1, the radio frequency signal layer 4 and the lower ground layer 7 are all copper layers.
In this embodiment, in the bending region 8 of the rf strip transmission line, the ratio of the thickness of the air layer to the thickness of the substrate layer is not limited, and may be within a reasonable range. As shown in fig. 3, the thickness of the first air layer 3 is slightly smaller than that of the first base material layer 2; the thickness of the second air layer 6 is larger than the thickness of the second base material layer 5 on one side, but smaller than the sum of the thicknesses of both sides. Therefore, in other equivalent embodiments, the thickness of the air layer may be set according to actual requirements.
Referring to fig. 1 to 5, a second embodiment of the present invention is:
the embodiment is suitable for the radio frequency strip transmission line which needs to be folded, wherein the radio frequency strip transmission line is applied to folding equipment.
In the radio frequency strip transmission line with high folding endurance, on the basis of the first embodiment, one of the first substrate layer 2 and the second substrate layer 5 is provided with an air layer on the bending area 8 of the radio frequency strip transmission line. That is, in the present embodiment, an air layer may be provided on one side.
To sum up, the utility model provides a high resistant radio frequency strip transmission line of rolling over, first substrate layer and second substrate layer all are provided with the one deck air bed on the bending region of radio frequency strip transmission line, have limited the position relation of air bed at the corresponding substrate layer simultaneously, have reduced the thickness of individual layer and whole thickness to the effectual stress concentration point that reduces the individual layer when bending, improved the bending performance of radio frequency strip transmission line greatly; in addition, because the dielectric constant and the loss factor of the air layer are lower than those of common media, the air layer is a good radio frequency transmission medium, and therefore, the performance of the strip-shaped radio frequency transmission line can be improved by the 2 air layers, so that the bending performance required by high-folding-resistance equipment is met, and the strip-shaped shielding structure of the radio frequency performance is also met; in addition, the air layer can be arranged on one side or the position of the air layer can be changed according to actual requirements.
The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.
Claims (6)
1. A high resistant radio frequency strip transmission line of rolling over which characterized in that: including first substrate layer and second substrate layer, first substrate layer with at least one substrate layer is in the second substrate layer be provided with the one deck air bed in the district of bending of radio frequency strip transmission line.
2. The rf strip transmission line with high bending endurance as claimed in claim 1, wherein: and any one of the first substrate layer and the second substrate layer is arranged on the bending area of the radio frequency strip transmission line, and an air layer is arranged on the bending area of the radio frequency strip transmission line.
3. The rf strip transmission line with high bending endurance as claimed in claim 1, wherein: the first substrate layer with the second substrate layer is all in be provided with the one deck air bed in the district of bending of radio frequency strip transmission line.
4. The radio frequency strip transmission line with high folding endurance as claimed in claim 3, wherein: the radio frequency signal layer is positioned between the first base material layer and the second base material layer.
5. The RF strip transmission line with high bending endurance as claimed in claim 4, wherein: on the district of bending of radio frequency strip transmission line, the first air bed of first substrate layer is located in the first substrate layer, the second air bed on the second substrate layer is located in the second substrate layer.
6. The RF strip transmission line with high bending endurance as claimed in any one of claims 1 to 5, wherein: the grounding layer is arranged on one side, far away from the second base material layer, of the first base material layer, and the grounding layer is arranged on one side, far away from the first base material layer, of the second base material layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921405485.7U CN210668637U (en) | 2019-08-26 | 2019-08-26 | High-folding-resistance radio frequency strip transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921405485.7U CN210668637U (en) | 2019-08-26 | 2019-08-26 | High-folding-resistance radio frequency strip transmission line |
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| Publication Number | Publication Date |
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| CN210668637U true CN210668637U (en) | 2020-06-02 |
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| CN201921405485.7U Active CN210668637U (en) | 2019-08-26 | 2019-08-26 | High-folding-resistance radio frequency strip transmission line |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113823447A (en) * | 2021-09-24 | 2021-12-21 | 惠州Tcl移动通信有限公司 | Radio frequency transmission line and foldable terminal device |
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2019
- 2019-08-26 CN CN201921405485.7U patent/CN210668637U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113823447A (en) * | 2021-09-24 | 2021-12-21 | 惠州Tcl移动通信有限公司 | Radio frequency transmission line and foldable terminal device |
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