WO2021119934A1 - 传输线以及终端设备 - Google Patents
传输线以及终端设备 Download PDFInfo
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- WO2021119934A1 WO2021119934A1 PCT/CN2019/125693 CN2019125693W WO2021119934A1 WO 2021119934 A1 WO2021119934 A1 WO 2021119934A1 CN 2019125693 W CN2019125693 W CN 2019125693W WO 2021119934 A1 WO2021119934 A1 WO 2021119934A1
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- Prior art keywords
- transmission line
- transmission
- wires
- impedance
- signal
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 94
- 239000004020 conductor Substances 0.000 claims abstract description 37
- 230000008054 signal transmission Effects 0.000 claims abstract description 13
- 238000005452 bending Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 208000010392 Bone Fractures Diseases 0.000 description 3
- 206010017076 Fracture Diseases 0.000 description 3
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- 230000015556 catabolic process Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
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- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P3/00—Waveguides; Transmission lines of the waveguide type
- H01P3/02—Waveguides; Transmission lines of the waveguide type with two longitudinal conductors
- H01P3/08—Microstrips; Strip lines
Definitions
- the invention relates to the field of signal transmission control, in particular to a transmission line and terminal equipment.
- Commonly used structures mainly include micro Strip line, coplanar waveguide line, strip line and dielectric integrated waveguide, etc.; integrated terminal equipment space structure, general transmission line modules need to be bent one or more times, and there is a risk of fracture in the narrow bending area, so local or
- the grid copper design is carried out in a large area; the grid copper structure will destroy the reference ground structure of the transmission line, resulting in impedance mismatch, resulting in performance degradation.
- the purpose of the present invention is to provide a transmission line that does not affect the transmission performance under bending conditions.
- a transmission line comprising a first grounding conductor and a signal layer; the first grounding conductor is provided with at least two connection areas and at least one connection area sandwiched between the connection areas Grid area; the signal layer is provided with a signal transmission line, the signal transmission line includes at least two transmission parts and at least one impedance adjustment part sandwiched between the transmission parts; the orthographic projection of the impedance adjustment part is located The grid area; the impedance adjusting part is used to adjust the impedance of the transmission line.
- the line width of the impedance adjusting part perpendicular to the signal transmission direction is greater than the line width of the transmission part.
- the transmission line further includes a second ground conductor, and the second ground conductor is arranged on a side of the signal layer away from the first ground conductor.
- the transmission line includes two first ground conductors, the two first ground conductors are arranged opposite to each other, and the signal layer is arranged between the two first ground conductors.
- the mesh regions of the two first ground conductors are arranged opposite to each other, and the impedance adjusting portion of the signal line is sandwiched between the two mesh regions.
- the grid area includes a plurality of wires, and the plurality of wires are intersected to form a grid structure.
- the plurality of wires includes a plurality of first wires and a plurality of second wires, the plurality of first wires and a plurality of second wires are arranged crosswise, the first wires are arranged in parallel along the first straight line, and the second wires It is arranged parallel to the second straight line.
- first straight line is perpendicular to the second straight line.
- the present invention also provides a terminal device, which includes the transmission line described in any one of the foregoing.
- the beneficial effect of the present invention is that by adjusting the line width of the impedance adjusting part, the impedance of the transmission line is adjusted, and the transmission performance of the transmission line is effectively guaranteed. At the same time, the grid area of the transmission line makes the transmission line more flexible, reducing the risk of bending and breaking the transmission line.
- Figure 1 is a perspective exploded view of a transmission line according to a first embodiment of the present invention
- Figure 2 is a perspective exploded view of a transmission line according to a second embodiment of the present invention.
- Figure 3 is a three-dimensional assembly view of the transmission line of the first embodiment of the present invention.
- Fig. 4 is an enlarged schematic diagram of the range A in Fig. 3;
- Fig. 5 is a graph of the reflection coefficient of an embodiment of the present invention:
- Fig. 6 is a graph of transmission coefficients according to an embodiment of the present invention.
- Fig. 7 is a graph of impedance of an embodiment of the present invention.
- the embodiment of the present invention provides a transmission line and terminal equipment.
- Terminal devices include but are not limited to smart phones, tablet computers, and portable wearable devices.
- FIG. 1 is a perspective exploded view of a transmission line according to a first embodiment of the present invention.
- the transmission line includes a first ground conductor 12 and a signal layer; the first ground conductor 12 is provided with at least two connection areas 10 and At least one grid area 11 sandwiched between the connecting areas 10.
- a signal transmission line 20 is provided in the signal layer.
- the signal transmission line 20 includes at least two transmission portions 22 and at least one impedance adjustment portion 21 sandwiched between the transmission portions 22;
- the projection is located in the grid area 11; the impedance adjusting part 21 is used to adjust the impedance of the transmission line.
- the signal layer is composed of a signal transmission line 20 and a substrate 23.
- the signal transmission line 20 is buried in the substrate 23, and the impedance of the transmission line is adjusted by adjusting the width of the impedance adjusting portion 21 in the L direction to optimize performance.
- the first ground conductor 12 is attached to one side of the substrate 23.
- the width of the impedance adjusting portion 21 perpendicular to the signal transmission direction is greater than the width of the transmission portion, so as to reduce the influence of the grid area 11 on the impedance of the transmission line.
- the transmission line further includes a second ground conductor 13.
- the second ground conductor 13 is arranged on a side of the signal layer away from the first ground conductor 12.
- the second ground conductor 13 is a reference ground composed of a single continuous area 10.
- the first ground conductor 12 and the second ground conductor 13 are arranged opposite to each other, the signal layer is sandwiched between the first ground conductor 12 and the second ground conductor 13, and the second ground conductor 13 opposite to the impedance matching part 21 serves as the part of the transmission line
- the reference ground constitutes a single-sided reference ground structure.
- the present invention discloses a transmission line of a second embodiment.
- the transmission line includes two first ground conductors 12, and the two first ground conductors 12 Relatively arranged, the signal line 2 is arranged between the two first ground conductors 12.
- the grid regions 11 of the two first ground conductors 12 are aligned and arranged oppositely, and the impedance adjusting portion 21 is sandwiched between the two grid regions 11.
- the transmission line has a double-sided reference ground structure, and the line width is adjusted by the impedance adjustment section 21 to adjust the impedance of the transmission line, and also provides one more transmission line type for the terminal device.
- the grid area 11 includes a plurality of wires, and the plurality of wires are intersected to form a grid structure.
- the grid area 11 is the bending area of the transmission line in the terminal equipment. To reduce the break of the transmission line caused by bending, the grid area 11 is arranged by a number of wires crossing to form multiple grids. The structure reduces the pulling force on the grid area 11 when the transmission line is bent, and reduces the risk of fracture.
- the grid of the grid area 11 may be a prismatic, rectangular, triangular, or hexagonal mesh with elasticity, which is not limited by the present invention.
- the plurality of wires includes a plurality of first wires 1211 and a plurality of second wires 1212, and the plurality of first wires 1211 and a plurality of second wires 1212 are arranged crosswise to form a mesh structure.
- the straight line L1 is arranged in parallel, and the second wire 1212 is arranged in parallel along the second straight line L2.
- first wires 1211 extending along a first straight line L1 and a plurality of second wires 1212 extending along a second straight line L2 are intersected, and the angle between the first straight line L1 and the second straight line L2 is 90. degree.
- the bending area 12 of the transmission line is arranged at the bending part of the internal space of the terminal device. Through the flexibility of the mesh, the risk of fracture in the bending area 12 is reduced, and the performance of the transmission line is intact.
- the first straight line L1 is perpendicular to the second straight line L2, which is more convenient for production in the process of mass industrial production.
- the transmission line impedance is adjusted by adjusting the line width of the impedance adjusting part, which effectively guarantees the transmission performance of the transmission line.
- the grid area of the transmission line makes the transmission line more flexible, reducing the risk of bending and breaking the transmission line.
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Abstract
本发明提供了一种传输线和电子设备，所述传输线包括第一接地导体以及与信号层；所述第一接地导体设有至少两个连接区和至少一个夹设于所述连接区之间的网格区；所述信号层内设有信号传输线，所述信号传输线包括至少两个传输部以及至少一个夹设于所述传输部之间的阻抗调节部；所述阻抗调节部的正投影位于所述网格区内；所述阻抗调节部用于调节传输线的阻抗。通过调整阻抗调节部的线宽，调节传输线阻抗，有效保证了传输线的传输性能。同时，在传输线的网格区使得传输线的伸缩性更强，减少了传输线弯折断裂的风险。
Description
本发明涉及一种信号传输控制领域，尤其涉及一种传输线以及终端设备。
随着5G（5th generation mobile networks）及消费类电子技术的发展，对多天线技术的研究由来已久。可供传统射频同轴传输线布局的空间也越来越小，因此新型传输结构应运而生；针对多天线射频传输线设计，主要采用PCB平面电路或挠性电路等方式设计，常用的结构主要有微带线、共面波导线、带状线及介质集成波导等；综合终端设备空间结构，一般传输线模组需要进行一次或多次弯折，狭窄的弯折区域存在断裂风险，因此需对局部或大面积区域进行网格铜设计；网格铜结构会破坏传输线的参考地结构，导致阻抗失配，从而导致性能降低。
本发明的目的在于提供一种弯折情况下不影响传输性能的传输线。
本发明的技术方案如下：一种传输线，所述传输线包括第一接地导体以及与信号层；所述第一接地导体设有至少两个连接区和至少一个夹设于所述连接区之间的网格区；所述信号层内设有信号传输线，所述信号传输线包括至少两个传输部以及至少一个夹设于所述传输部之间的阻抗调节部；所述阻抗调节部的正投影位于所述网格区内；所述阻抗调节部用于调节传输线的阻抗。
进一步地，所述阻抗调节部垂直于信号传输方向上的线宽大于所述传输部的线宽。
进一步地，所述传输线还包括第二接地导体，所述第二接地导体设置在所述信号层远离所述第一接地导体的一侧。
进一步地，所述传输线包括两个第一接地导体，所述两个第一接地导体相对设置，所述信号层设置在所述两个第一接地导体之间。
进一步地，所述两个第一接地导体的所述网格区相对设置，所述信号线的所述阻抗调节部夹设在两个所述网格区之间。
进一步地，所述网格区包括若干导线，若干导线交叉设置，以形成网格结构。
进一步地，所述若干导线包括若干第一导线以及若干第二导线，所述若干第一导线以及若干第二导线交叉设置，所述第一导线沿第一直线平行设置，所述第二导线沿第二直线平行设置。
进一步地，所述第一直线与所述第二直线垂直。
本发明还提供一种终端设备，所述终端设备包括上述任意一项所述的传输线。
本发明的有益效果在于：通过调整阻抗调节部的线宽，调节传输线阻抗，有效保证了传输线的传输性能。同时，在传输线的网格区使得传输线的伸缩性更强，减少了传输线弯折断裂的风险。
图1是本发明第一实施例的传输线的立体分解图；
图2是本发明第二实施例的传输线的立体分解图；
图3是本发明第一实施例的传输线的立体组装图；
图4是图3中A范围的放大示意图；
图5是本发明实施例的反射系数的曲线图：
图6是本发明实施例的传输系数的曲线图；
图7是本发明实施例的阻抗的曲线图。
为了使本发明实施方式的目的、技术方案和优点更加清楚，下面将结合附图对本发明的各个实施方式进行详细的阐述。然而，本领域的普通技术人员可以理解，在本发明各实施方式中，为了使读者更好理解本发明而提出了许多技术细节。但是，即使没有这些技术细节和基于以下各实施方式的种种变化和修改，也可以实现本发明所要求保护的技术方案。
本发明的说明书和权利要求书及上述附图中的术语“第一”、“第二”、“第三”、“第四”等(如果存在)是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便这里描述的实施例能够以除了在这里图示或描述的内容以外的顺序实施。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产 品或设备固有的其它步骤或单元。
需要说明的是，在本发明中涉及“第一”、“第二”等的描述仅用于描述目的，而不能理解为指示或暗示其相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。另外，各个实施例之间的技术方案可以相互结合，但是必须是以本领域普通技术人员能够实现为基础，当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在，也不在本发明要求的保护范围之内。
本发明实施例提供一种传输线以及终端设备，在终端设备中布设天线时，需要通过传输线电连接天线和终端设备的信号处理单元。对此，通过本传输线，可在终端设备有限的空间内进行有效的传输布局。终端设备包括但不限于智能手机、平板电脑和便携式可穿戴设备。
请参阅图1，图1为本发明第一实施例的传输线的立体分解图，所述传输线包括第一接地导体12以及信号层；所述第一接地导体12设有至少两个连接区10和至少一个夹设于所述连接区10之间的网格区11。所述信号层内设有信号传输线20，所述信号传输线20包括至少两个传输部22以及至少一个夹设于所述传输部22之间的阻抗调节部21；所述阻抗调节部21的正投影位于所述网格区11内；所述阻抗调节部21用于调节传输线的阻抗。
具体的，所述信号层由信号传输线20和基板23组成，所述信号传输线20埋设在基板23内，通过调节L方向上阻抗调节部21的宽度，从而来调节传输线的阻抗，优化性能。第一接地导体12附着在基板23的一侧。在本实施例中，所述阻抗调节部21垂直于信号传输方向上的宽度大于所述传输部的宽度，以减小网格区11对传输线的阻抗影响。
优选的，所述传输线还包括第二接地导体13。所述第二接地导体13设置在所述信号层远离所述第一接地导体12的一侧。
具体的，第二接地导体13为由单独一个连续区10组成的参考地。第一接地导体12与第二接地导体13相对设置，将信号层夹设在第一接地导体12与第二接地导体13之间，在阻抗匹配部21相对的第二接地导体13作为该部分传输线的参考地，构成单面参考地结构。
请参看图2，本发明公开了第二实施例的传输线，与第一实施例的传输线的不同之处在于，所述传输线包括两个第一接地导体12，所述两个第一接地导体12相对设置，所述信号线2设置在所述两个第一接地导体12之间。所述两个第一接地导体12的所述网格区11对齐相对设置，将阻抗调节部21夹设在两个所述网格区11之间。具体的，本实施例中，传输线为双面参考地结构，通过阻抗调节部21调节线宽，以调节传输线的阻抗，也为终端设备提供多一种传输线类型。
优选的，所述网格区11包括若干导线，若干导线交叉设置，以形成网格结构。
具体的，请参看图3-图4，网格区11为传输线在终端设备中的弯折区域，为减少弯折造成传输线的断裂，网格区11由若干导线交叉设置，形成多个网格结构，减少传输线弯折时对网格区11的拉扯力，减小断裂的风险。网格区11的网格可以为棱形、长方形、三角形或者六角形等具备伸缩性的网孔，对此本发明对此并不限制。
优选的，所述若干导线包括若干第一导线1211以及若干第二导线1212，所述若干第一导线1211以及若干第二导线1212交叉设置，以形成网孔结构所述第一导线1211沿第一直线L1平行设置，所述第二导线1212沿第二直线L2平行设置。
本实施例中，若干沿第一直线L1延伸的第一导线1211与若干第二直线L2延伸的第二导线1212相交设置，且第一直线L1与第二直线L2相交的夹角为90度。传输线的弯折区12设置在终端设备的内部空间弯折处，通过网孔的伸缩性，减少弯折区12的断裂风险，保证了传输线的性能完好。第一直线L1与第二直线L2垂直，在进行大批量工业生产的过程中更加方便生产。
如图5所示，对比使用本发明传输线前的终端设备的反射系数的曲线S1和使用本发明传输线后的终端设备的反射系数的曲线S2可见，使用本发明的传输线能够有效降低传输过程中的回波损耗，以提高终端设备的射频性能。
如图6所示，对比终端设备使用本发明传输线前的传输系数的曲线的S3和使用本发明传输线后的传输系数的曲线S4的曲线图可见，使用本发明的传输线后的插入损耗性能更优。
如图7所示，对比终端设备使用的网格区11增加参考地结构3之前的阻抗曲线S5以及增加参考地结构3之后的阻抗曲线S6可见，使用增加参考地结构3后的网格区11阻抗明显得到改善。
上述实施例中，通过调整阻抗调节部的线宽，调节传输线阻抗，有效保证了传输线的传输性能。同时，在传输线的网格区使得传输线的伸缩性更强，减少了传输线弯折断裂的风险。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统，装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
以上所述的仅是本发明的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本发明创造构思的前提下，还可以做出改进，但这些均属于本发明的保护范围。
Claims (9)
- 一种传输线，其特征在于，所述传输线包括第一接地导体以及与信号层；所述第一接地导体设有至少两个连接区和至少一个夹设于所述连接区之间的网格区；所述信号层内设有信号传输线，所述信号传输线包括至少两个传输部以及至少一个夹设于所述传输部之间的阻抗调节部；所述阻抗调节部的正投影位于所述网格区内；所述阻抗调节部用于调节传输线的阻抗。
- 根据权利要求1所述的传输线，其特征在于，所述阻抗调节部垂直于信号传输方向上的线宽大于所述传输部的线宽。
- 根据权利要求1或2所述的传输线，其特征在于，所述传输线还包括第二接地导体，所述第二接地导体设置在所述信号层远离所述第一接地导体的一侧。
- 根据权利要求1或2所述的传输线，其特征在于，所述传输线包括两个第一接地导体，所述两个第一接地导体相对设置，所述信号层设置在所述两个第一接地导体之间。
- 根据权利要求4所述的传输线，其特征在于，所述两个第一接地导体的所述网格区相对设置，所述信号线的所述阻抗调节部夹设在两个所述网格区之间。
- 根据权利要求2所述的传输线，其特征在于，所述网格区包括若干导线，若干导线交叉设置，以形成网格结构。
- 根据权利要求6所述的传输线，其特征在于，所述若干导线包括若干第一导线以及若干第二导线，所述若干第一导线以及若干第二导线交叉设置，所述第一导线沿第一直线平行设置，所述第二导线沿第二直线平行设置。
- 根据权利要求7所述的传输线，其特征在于，所述第一直线与所述第二直线垂直。
- 一种终端设备，其特征在于，所述终端设备包括上述权利要求1-8任意一项所述的传输线。
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