CN210052827U - High-frequency transmission line with parallel ground-wire-free structure - Google Patents
High-frequency transmission line with parallel ground-wire-free structure Download PDFInfo
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- CN210052827U CN210052827U CN201920904498.2U CN201920904498U CN210052827U CN 210052827 U CN210052827 U CN 210052827U CN 201920904498 U CN201920904498 U CN 201920904498U CN 210052827 U CN210052827 U CN 210052827U
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Abstract
The utility model discloses a high frequency transmission line of parallel no ground wire structure, including parallel sinle silk right, insulating band and metallic shield area, insulating band cladding in parallel sinle silk is external, metallic shield take spiral winding in outside the insulating band. The utility model relates to a high frequency transmission line of parallel no ground wire structure, at first with the cladding of insulating band at parallel sinle silk to the back, reuse metallic shield area carries out the cladding to can enough realize better shielding effect, can make the structural stability of cable better again, can also satisfy transmission characteristics such as high frequency insertion loss more than 40GHz simultaneously. Additionally, the utility model discloses a high frequency transmission line has the parallel sinle silk of symmetry right for the structure of wire rod is more stable, and the conductor of each sinle silk is also the same to the distance in metal shielding area, thereby makes the metal shielding area have better shielding effect to the conductor, and then makes the high frequency transmission performance of wire rod better, conveniently processes the wire rod.
Description
Technical Field
The utility model relates to a transmission cable field especially relates to a high frequency transmission line of parallel no ground wire structure.
Background
A guided wave structure for transmitting electrical energy and/or electrical signals in a Transverse Electromagnetic (TEM) mode. The transmission line is characterized by a lateral dimension much smaller than the operating wavelength. The main structural types are parallel twin-wire, parallel multi-wire, coaxial line, strip line, and microstrip line working in quasi-TEM mode (fig. 1) (see telecommunication cable), all of which can be used for circuit analysis by means of a simple twin-wire model. Various waveguides that transmit TE mode, TM mode, or mixed modes thereof can be considered to be broad transmission lines. The distribution rule of the electromagnetic field in the waveguide along the propagation direction is similar to the voltage and current conditions on the transmission line, and the distribution rule can be analyzed by using the viewpoint of an equivalent transmission line.
However, the existing high-frequency transmission parallel lines are basically single ground wires, the outer layer of the wire core pair is generally coated with a metal wrapping tape firstly and then coated with an insulating wrapping tape, the distance between a conductor and the metal wrapping tape is inconsistent due to the fact that the wire core pair is not fixed, meanwhile, the wire structure is asymmetric, and finally, the transmission characteristics such as high-frequency insertion loss and the like of more than 40GHz cannot be met; moreover, because the structure between the wire core pair is not fixed, the metal wrapping belt not only plays a role in shielding, but also plays a role in ensuring the stability of the wire core pair structure, so that the existing high-frequency transmission parallel line has poor shielding effect and unstable structure, and the high-frequency transmission rate is further reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the weak point among the prior art, providing a high frequency transmission line of parallel no ground wire structure, can enough realize better shielding effect, can make the structural stability of cable better again, can also satisfy transmission characteristics such as high frequency insertion loss more than 40GHz simultaneously.
The purpose of the utility model is realized through the following technical scheme:
a high frequency transmission line of a parallel groundless configuration, comprising: the insulation package belt is wrapped outside the parallel wire cores, and the metal shielding belt is spirally wound outside the insulation package belt.
In one embodiment, the insulating wrapping tape is spirally wound outside the parallel wire cores, and the winding direction of the insulating wrapping tape is opposite to that of the metal shielding tape.
In one embodiment, the insulating wrapping tape is longitudinally wrapped on the outer side wall of the parallel wire core pair.
In one embodiment, the insulating tape is a polytetrafluoroethylene tape, and the polytetrafluoroethylene tape is coated outside the parallel wire cores.
In one embodiment, the polytetrafluoroethylene tape has a thickness of 30mm to 80 mm.
In one embodiment, the metal shielding tape is a pure copper film, the pure copper film is spirally wound outside the insulating wrapping tape, and the pure copper film is used as a ground wire of the high-frequency transmission line.
In one embodiment, the thickness of the pure copper film is 10-40 μm.
In one embodiment, the pair of parallel wire cores comprises a first core wire and a second core wire which are symmetrically arranged, the first core wire and the second core wire are arranged in parallel, the first core wire and the second core wire are tightly close to each other, and the inner side wall of the insulating wrapping tape is tightly attached to the outer side walls of the first core wire and the second core wire.
In one embodiment, the first core includes a first conductor and a first jacket, the first jacket is wrapped around the first conductor, and the second core includes a second conductor and a second jacket, the second jacket is wrapped around the second conductor.
In one embodiment, the high-frequency transmission line further comprises an outer sheath, the outer sheath is sleeved on the metal shielding strip, and the inner side wall of the outer sheath is tightly attached to the outer side wall of the metal shielding strip.
The utility model discloses compare in prior art's advantage and beneficial effect as follows:
the utility model relates to a high frequency transmission line of parallel no ground wire structure, at first with the cladding of insulating band at parallel sinle silk to the back, reuse metallic shield area carries out the cladding to can enough realize better shielding effect, can make the structural stability of cable better again, can also satisfy transmission characteristics such as high frequency insertion loss more than 40GHz simultaneously. Additionally, the utility model discloses a high frequency transmission line has the parallel sinle silk of symmetry right for the structure of wire rod is more stable, and the conductor of each sinle silk is also the same to the distance in metal shielding area, thereby makes the metal shielding area have better shielding effect to the conductor, and then makes the high frequency transmission performance of wire rod better, conveniently processes the wire rod.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a high-frequency transmission line with a parallel groundless structure according to an embodiment of the present invention;
fig. 2 is a schematic structural view of another embodiment of the high-frequency transmission line shown in fig. 1.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, a high frequency transmission line with a parallel no ground line structure includes: the cable comprises a parallel wire core pair 100, an insulating wrapping tape 200 and a metal shielding tape 300, wherein the insulating wrapping tape 200 is wrapped outside the parallel wire core pair 100, and the metal shielding tape 300 is spirally wound outside the insulating wrapping tape 200. The parallel wire core pairs 100 are used for transmitting high-frequency signals, and the structural stability of the high-frequency transmission line can be improved by arranging the parallel wire core pairs; the insulating wrapping tape 200 is used for wrapping the wire core pairs, so that the wire core pairs are more stable in structure and better in symmetrical performance; the metal shielding belt 300 is used for playing a shielding effect and is coated outside an insulating coating, so that the structural stability and the symmetry of the wire rod can be improved, the shielding effect of the wire rod can be improved, the high-frequency transmission performance of the wire rod is further ensured, and the transmission performance of the wire rod can meet the requirement of high frequency (more than or equal to 40 GHz).
Therefore, the utility model discloses a high frequency transmission line of parallel no ground wire structure, at first with the cladding of insulating band at parallel sinle silk to the back, reuse metallic shield area carries out the cladding to can enough realize better shielding effect, can make the structural stability of cable better again, can also satisfy transmission characteristics such as high frequency insertion loss more than 40GHz simultaneously. Additionally, the utility model discloses a high frequency transmission line has the parallel sinle silk of symmetry right for the structure of wire rod is more stable, and the conductor of each sinle silk is also the same to the distance in metal shielding area, thereby makes the metal shielding area have better shielding effect to the conductor, and then makes the high frequency transmission performance of wire rod better, conveniently processes the wire rod.
It should be noted that the insulating tape 200 is spirally wound outside the parallel wire core pair 100, and the winding direction of the insulating tape 200 is opposite to the winding direction of the metal shielding tape 300. So, through setting up spiral winding's insulating band, the mode cladding in order wrapping is external at parallel sinle silk promptly, can be with the tighter of parallel sinle silk to the cladding, improves the structural stability of wire rod. Meanwhile, the metal shielding belt is reversely wound outside the wound insulating tape, so that the structural stability of the parallel wire core pairs can be further enhanced, and the shielding effect of the metal shielding belt can be ensured.
In another embodiment, referring to fig. 2, the insulation tape 200 is longitudinally wrapped on the outer sidewall of the parallel wire core pair 100. So, in order to make the planarization and the symmetry performance of further assurance wire rod, can also be with the parallel sinle silk of insulating band cladding with the mode of indulging the package to improve the planarization of wire rod, again on the insulating band around the package metal shielding area, can realize better shielding effect to the wire rod, and then realize the high frequency transmission performance of wire rod.
It should be noted that the insulating wrapping tape 200 is a polytetrafluoroethylene wrapping tape, and the polytetrafluoroethylene wrapping tape is wrapped around the parallel wire cores. Polytetrafluoroethylene band adopts the PTFE band to twine promptly, so, sets up the PTFE band between metal shielding area and parallel line core are right, can guarantee the structural stability that parallel line core is right, but also can realize effectual shielding property, improves the transmission performance of wire rod.
In this embodiment, the thickness of the polytetrafluoroethylene wrapping tape is 30 mm-80 mm. If the thickness of the polytetrafluoroethylene wrapping tape is 60mm, the polytetrafluoroethylene wrapping tape with the thickness of 60mm is wrapped on the parallel wire core pair, so that the structural stability of the wire can be ensured, the shielding effect of the wire is good, and the transmission performance of the wire is improved.
It should be noted that the metal shielding tape 300 is a pure copper film, the pure copper film is spirally wound outside the insulating envelope, and the pure copper film is used as a ground wire of the high-frequency transmission line. So, because the structure of this application is through regarding the metal shielding area as the ground wire to can realize the characteristics of no ground wire, thereby can guarantee the symmetry and the good structural stability of wire rod.
In this embodiment, the thickness of the pure copper thin film is 10 μm to 40 μm. For another example, the thickness of the pure copper film is 25 μm, and the pure copper film with 25 μm is coated outside the insulating coating, so that the shielding effect of the wire rod can be ensured, further, the distance from the conductor of the wire core pair to the metal shielding tape can be ensured to be equal, the stability of the high-frequency performance of the wire rod can be ensured, and the wire rod can be conveniently processed.
Referring to fig. 1 again, the parallel wire core pair 100 includes a first core wire 110 and a second core wire 120, the first core wire 110 and the second core wire 120 are disposed in parallel, the first core wire 110 and the second core wire 120 are tightly close to each other, and the inner sidewall of the insulation tape 200 is tightly attached to the outer sidewalls of the first core wire 110 and the second core wire 120. By providing the first core 110 and the second core 120 in this manner, high-frequency signals of the wire material can be transmitted.
The first core 110 includes a first conductor 111 and a first sheath 112, and the first sheath 112 is coated outside the first conductor 111. The second core wire 120 includes a second conductor 121 and a second sheath 122, and the second sheath 122 is wrapped outside the second conductor 121. The first conductor and the second conductor are used for transmitting high-frequency signals, and the first sheath is used for protecting the first conductor from being damaged and can also play a role in insulating and shielding the first layer; the second sheath is used for protecting the second conductor and has the effects of insulation and shielding.
It should be noted that, in order to protect the wires from being damaged, in an embodiment, the high-frequency transmission line further includes an outer sheath, the outer sheath is sleeved on the metal shielding tape, and an inner side wall of the outer sheath is closely attached to an outer side wall of the metal shielding tape. So, wrap up outside metallic shield outband through setting up outer sheath, can protect the wire rod on the one hand, on the other hand can further step up the inner structure of wire rod again, improves the structural stability of wire rod to improve the stability of the high frequency transmission of wire rod.
It can be understood that the utility model discloses breakthroughly adopt the none ground wire structure, wrap one deck PTFE area earlier simultaneously, wrap the metallic shield area again, when physical structure and the electrical property that keep stable, can reduce insulating dielectric constant, the uniformity between complementary two heart yearns and the shielding to realize finished product wire rod high frequency transmission and processing practicality, satisfy multiple processing demand, very big improvement popularization nature.
The utility model discloses compare in prior art's advantage and beneficial effect as follows:
the utility model relates to a high frequency transmission line of parallel no ground wire structure, at first with the cladding of insulating band at parallel sinle silk to the back, reuse metallic shield area carries out the cladding to can enough realize better shielding effect, can make the structural stability of cable better again, can also satisfy transmission characteristics such as high frequency insertion loss more than 40GHz simultaneously. Additionally, the utility model discloses a high frequency transmission line has the parallel sinle silk of symmetry right for the structure of wire rod is more stable, and the conductor of each sinle silk is also the same to the distance in metal shielding area, thereby makes the metal shielding area have better shielding effect to the conductor, and then makes the high frequency transmission performance of wire rod better, conveniently processes the wire rod.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A high-frequency transmission line of a parallel groundless configuration, comprising: the insulation package belt is wrapped outside the parallel wire cores, and the metal shielding belt is spirally wound outside the insulation package belt.
2. The high-frequency transmission line with a parallel groundless structure as claimed in claim 1, wherein the insulating tape is spirally wound around the parallel core in a direction opposite to the winding direction of the metal shielding tape.
3. The high-frequency transmission line with a parallel groundless structure as claimed in claim 1, wherein the insulating tape is wrapped longitudinally on the outer sidewall of the pair of parallel cores.
4. The high-frequency transmission line with the parallel groundless structure as claimed in claim 1, wherein the insulating tape is a teflon tape, and the teflon tape covers the parallel wire core to the outside.
5. The high-frequency transmission line with a parallel groundless structure of claim 4, wherein the teflon tape has a thickness of 30mm to 80 mm.
6. The high-frequency transmission line of a parallel groundless configuration as claimed in claim 1, wherein said metallic shield tape is a pure copper film, said pure copper film is spirally wound outside said insulating envelope, and said pure copper film is used as a ground of said high-frequency transmission line.
7. The high-frequency transmission line with a parallel groundless structure according to claim 6, wherein the thickness of the pure copper thin film is 10 μm to 40 μm.
8. The high-frequency transmission line with a parallel groundless structure as claimed in claim 1, wherein the pair of parallel cores comprises a first core and a second core symmetrically disposed, the first core is disposed parallel to the second core, the first core and the second core are tightly close to each other, and the inner sidewall of the insulating tape closely fits to the outer sidewalls of the first core and the second core.
9. The high-frequency transmission line with a parallel groundless structure as claimed in claim 8, wherein the first core includes a first conductor and a first jacket, the first jacket is wrapped around the first conductor, the second core includes a second conductor and a second jacket, the second jacket is wrapped around the second conductor.
10. The high-frequency transmission line with a parallel groundless structure according to claim 1, further comprising an outer sheath, wherein the outer sheath is sleeved on the metal shielding tape, and the inner sidewall of the outer sheath is closely attached to the outer sidewall of the metal shielding tape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920904498.2U CN210052827U (en) | 2019-06-14 | 2019-06-14 | High-frequency transmission line with parallel ground-wire-free structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920904498.2U CN210052827U (en) | 2019-06-14 | 2019-06-14 | High-frequency transmission line with parallel ground-wire-free structure |
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| CN210052827U true CN210052827U (en) | 2020-02-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115663430A (en) * | 2022-12-28 | 2023-01-31 | 成都世源频控技术股份有限公司 | Spiral winding shaft type microstrip filter and preparation method thereof |
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2019
- 2019-06-14 CN CN201920904498.2U patent/CN210052827U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115663430A (en) * | 2022-12-28 | 2023-01-31 | 成都世源频控技术股份有限公司 | Spiral winding shaft type microstrip filter and preparation method thereof |
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Effective date of registration: 20210708 Address after: 516029 Desai No.3 Industrial Park, Zhongkai Avenue, Huizhou City, Guangdong Province Patentee after: LTK ELECTRIC WIRE (HUIZHOU) Ltd. Patentee after: HUIZHOU LTK ELECTRONIC CABLE Co.,Ltd. Patentee after: SHENZHEN WOER SPECIAL CABLE Co.,Ltd. Patentee after: LTK ELECTRIC WIRE (CHANGZHOU) Ltd. Address before: 516006 Desai No.3 Industrial Park, Zhongkai Avenue, Huizhou City, Guangdong Province Patentee before: LTK ELECTRIC WIRE (HUIZHOU) Ltd. Patentee before: HUIZHOU LTK ELECTRONIC CABLE Co.,Ltd. Patentee before: SHENZHEN WOER SPECIAL CABLE Co.,Ltd. Patentee before: Shenzhen Woer Heat-shrinkable Material Co.,Ltd. Patentee before: LTK ELECTRIC WIRE (CHANGZHOU) Ltd. |