WO2022047868A1 - 天线模组及应用该天线模组的终端设备 - Google Patents

天线模组及应用该天线模组的终端设备 Download PDF

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Publication number
WO2022047868A1
WO2022047868A1 PCT/CN2020/117811 CN2020117811W WO2022047868A1 WO 2022047868 A1 WO2022047868 A1 WO 2022047868A1 CN 2020117811 W CN2020117811 W CN 2020117811W WO 2022047868 A1 WO2022047868 A1 WO 2022047868A1
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WIPO (PCT)
Prior art keywords
radiating element
radiator
substrate
antenna module
electrically connected
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PCT/CN2020/117811
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English (en)
French (fr)
Inventor
许心影
王建安
陈勇利
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瑞声声学科技(深圳)有限公司
瑞声精密制造科技(常州)有限公司
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Publication of WO2022047868A1 publication Critical patent/WO2022047868A1/zh

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/48—Earthing means; Earth screens; Counterpoises
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors

Definitions

  • the present application relates to the field of antenna technology, and in particular, to an antenna module and a terminal device using the antenna module.
  • Existing mobile terminal devices such as mobile phones, notebook computers, tablet computers, players, headphones, smart watches, smart glasses, etc., have more and more complex functions, and more and more antennas are required to meet different requirements. Reception and transmission of frequency band signals.
  • the distance between antenna radiators becomes smaller, resulting in electromagnetic coupling between adjacent radiators and mutual interference between radiators, that is, the isolation between radiators decreases, which affects the performance of the antenna.
  • an antenna module made of a flexible substrate includes a substrate, a radiator attached to the substrate, and a grounding body that provides electrical connection for the radiator. Both the radiator and the grounding body are disposed on the substrate On the upper surface of the radiator, in order to meet the reception and emission of signals in different frequency bands, there can be two or more radiators. Due to the small distance between adjacent radiators, spatial electromagnetic coupling and surface wave coupling exist between adjacent radiators, resulting in low isolation between adjacent radiators, which cannot guarantee antenna performance.
  • the purpose of the present application is to provide an antenna module and a terminal device using the antenna module, so as to improve the isolation between each radiator and improve the performance of the antenna module.
  • An antenna module includes a substrate, a first radiator, a second radiator, a first feeder for feeding the first radiator, and a second feeder for feeding the second radiator , the first radiator and the second radiator are respectively attached to the substrate;
  • the first radiator is at least partially disposed on the first surface of the substrate, the second radiator is disposed at least partially on the second surface of the substrate, and the first feeder is disposed on the first surface , the second feeding part is arranged on the second surface.
  • the surface waves excited by one radiator on the surface of the substrate are prevented from propagating to the feeding parts of another radiator adjacent to it, and the space between adjacent radiators is prevented. surface wave coupling, thereby improving the isolation between adjacent radiators.
  • FIG. 1 is a schematic structural diagram of an antenna module in the prior art.
  • FIG. 2 is a schematic front view of the structure of the antenna module according to Embodiment 1 of the present application.
  • FIG. 3 is a schematic diagram of a cross-sectional structure along the A-A direction in FIG. 2 .
  • FIG. 4 is a schematic diagram of a front structure of an antenna module according to Embodiment 2 of the present application.
  • FIG. 5 is a schematic diagram of the front structure of the antenna module according to the third embodiment of the application.
  • FIG. 6 is a schematic diagram of a reverse side structure of the antenna module shown in FIG. 5 .
  • FIG. 7 is a schematic diagram of a cross-sectional structure along the B-B direction in FIG. 5 .
  • the present application discloses an antenna module including a substrate 10 , a first radiator 23 , a second radiator 24 , a first feeding part 231 feeding the first radiator, and a first radiator 231 .
  • the second feeding part 241 fed by the two radiators 24, the first radiator 23 and the second radiator 24 are respectively attached to the substrate 10; the first radiator 23 is at least partially disposed on the first surface 13 of the substrate 10, The two radiators 24 are at least partially disposed on the second surface 15 of the substrate 10 , the first feeding portion 231 is disposed on the first surface 13 , and the second feeding portion 241 is disposed on the second surface 15 .
  • the feeders (the first feeder 231 and the second feeder 241 ) of the adjacent radiators (the first radiator 23 and the second radiator 24 ) on different surfaces (the first surface 13 ) of the substrate 10 and the second surface 15), to prevent the surface wave excited by a radiator 23 on the first surface 13 from propagating to the second feeder 241 of the adjacent second radiator 24, and to prevent the transmission between adjacent radiators.
  • Surface wave coupling thereby improving isolation between adjacent radiators.
  • the first radiator 23 or the second radiator 24 may be a high frequency radiator or a low frequency radiator.
  • the modes of electromagnetic coupling between adjacent radiators mainly include spatial coupling and surface wave coupling.
  • the distance between two adjacent radiators is large enough to improve isolation by reducing spatial coupling.
  • mobile terminal devices are becoming more and more thin and miniaturized. Increasing the distance between radiators to improve isolation is obviously not enough. Require.
  • the surface wave refers to the surface traveling wave that propagates at the interface between different media, and belongs to the mechanical wave. When the surface wave propagates at the interface between the radiator and the substrate 10, it encounters the feeding part of another radiator, and it occurs.
  • Surface wave coupling this application mainly improves isolation by reducing surface wave coupling.
  • the first radiator 23 and the first feeding part 231 are both arranged on the first surface 13 of the substrate 10
  • the second radiator 24 and the second feeding part 241 are both arranged on the substrate
  • the first feeding part 231 and the second feeding part 241 are respectively disposed on different surfaces of the substrate 10 to avoid surface wave coupling between them and improve isolation.
  • the antenna module further includes a first ground body 31 disposed on the first surface 13 and a second ground body 32 disposed on the second surface 15 , the first ground body 31 and the second ground body 32
  • the bodies 32 are electrically connected through metallized vias.
  • the first grounding body 31 and the second grounding body 32 are upper and lower stacked grounding bodies that are electrically connected to each other, which can increase the surface area of one layer of grounding bodies in the prior art, making the grounding body closer to infinity relative to the radiator. The performance of the antenna is improved without increasing the plane area of the grounding body.
  • the first radiator 23 or the second radiator 24 may be composed of one, two or more than two radiating elements, and the shape of each radiating element may be any shape.
  • Embodiment 2 includes a first radiating element 232 and a second radiating element 233
  • the second radiator 24 includes a third radiating element 242 and a fourth radiating element 242 .
  • Radiating element 243 is that the first radiator 23 in Embodiment 2 includes a first radiating element 232 and a second radiating element 233
  • the second radiator 24 includes a third radiating element 242 and a fourth radiating element 242 .
  • the first radiator 23 includes a first radiating element 232 and a second radiating element 233, which are respectively disposed on different surfaces.
  • the first radiating element 232 and the second radiating element 233 The radiating element 233 is electrically connected.
  • the first radiating element 232 and the first feeding part 231 are electrically connected, and the first radiating element 232 , the first feeding part 231 and the first grounding body 31 are all provided
  • the second radiating element 233 is arranged on the second surface 15 , and different radiating elements of different radiators are arranged on different surfaces of the substrate 10 as much as possible to prevent two radiators located on the same surface of the substrate 10 .
  • the surface wave coupling of the radiating element improves the isolation between the two radiators.
  • the second radiator 24 may include one or two radiating elements.
  • the second radiator 24 includes a third radiating element 242 and a fourth radiating element 243, which are respectively disposed on different surfaces, and the third radiating element 242 and the fourth radiating element 243 are electrically connected.
  • the third radiating element 242 is electrically connected to the second feeding part 241
  • the fourth radiating element 243 is stacked on the first surface 13
  • the second feeding part 241 and the second grounding body 32 are all The layers are stacked on the second surface 15 .
  • the first radiating element 232 and the second radiating element 233 are at least partially facing each other; the third radiating element 242 and the fourth radiating element 243 are at least partially facing each other.
  • the plane space occupied by the radiator on the substrate 10 is reduced, the plane layout area of the radiator is reduced, and the requirement of miniaturization of the existing terminal equipment is satisfied.
  • the radiating elements of the two radiators are arranged on different surfaces of the substrate 10 as much as possible, which not only saves the plane space of the antenna, but also improves the isolation.
  • the radiating elements disposed opposite to each other are electrically connected through metallized through holes 40 .
  • the first radiating element 232 and the second radiating element 233 are electrically connected through the metallized through holes 40 in the oppositely arranged parts; the third radiating element 242 and the fourth radiating element 243 are in the oppositely arranged parts Parts are electrically connected through metallized vias 40 .
  • the number of metallized through holes 40 may be one, two or more, preferably, two or more.
  • Embodiment 3 The difference between Embodiment 3 and Embodiment 2 is that in Embodiment 3, the substrate 10 is set as a double-layer substrate, a third surface 14 is added in the middle of the double-layer substrate, and a third grounding body is added on the third surface 14 33.
  • the number of substrate layers increases and the number of grounding bodies increases, which facilitates different radiating elements to be arranged on different surfaces, and increases the isolation between the radiating elements, thereby improving the isolation of the antenna module.
  • the substrate 10 includes an upper substrate 11 and a lower substrate 12 , the upper surface of the upper substrate 11 is the first surface 13 , and the upper surface of the lower substrate 12 is the third substrate 12 .
  • the surface 14, the lower surface of the lower substrate 12 is the second surface 15, and the grounding body includes three layers of grounding bodies arranged in layers, which are respectively the first grounding body 31 attached to the first surface 13 and the grounding body 31 attached to the second surface 15.
  • the first radiating element 232 is electrically connected to the first feeding part 231, and the first radiating element 232 is electrically connected to the first feeding part 231.
  • 232 is stacked on the first surface 13
  • the second radiating element 233 is stacked on the second surface 15
  • the third radiating element 242 is electrically connected to the second feeder 241
  • the third radiating element 242 is stacked on the second surface 15
  • the fourth radiation element 243 is stacked on the third surface 14 .
  • the double-layer substrate and the components located on different surfaces of the substrate are formed by pressing.
  • the substrate 10 can also be a multi-layer substrate with more than two layers, the grounding body can also be more than three grounding bodies, and each radiator can include more than two radiating elements. Let each radiating element be placed on a different surface.
  • the substrate 10 is a flexible substrate, which may be a single-layer flexible substrate, a double-layer flexible substrate, or a multi-layer flexible substrate.
  • the present application also provides terminal equipment including the above-mentioned antenna module, such as mobile phones, notebook computers, tablet computers, players, earphones, smart watches, smart glasses, and the like.

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Abstract

本申请提供了一种天线模组及应用该天线模组的终端设备，天线模组包括基板、第一辐射体、第二辐射体、为所述第一辐射体馈电的第一馈电部以及为所述第二辐射体馈电的第二馈电部，所述第一辐射体和所述第二辐射体分别贴合至所述基板；所述第一辐射体至少部分设置于所述基板的第一表面，所述第二辐射体至少部分设置于所述基板的第二表面，所述第一馈电部设置于所述第一表面，所述第二馈电部设置于所述第二表面。本申请的天线模组的各辐射体之间的隔离度被显著提高。

Description

天线模组及应用该天线模组的终端设备 技术领域
本申请涉及天线技术领域，尤其涉及一种天线模组及应用该天线模组的终端设备。
 背景技术
现有移动终端设备，例如手机、笔记本电脑、平板电脑、播放器、耳机、智能手表、智能眼镜等，其功能越来越复杂，所需的天线的个数越来越多，以满足对不同频段信号的接收和发射。
 技术问题
天线数量增加，天线辐射体之间的间距变小，导致相邻辐射体之间产生电磁耦合，辐射体之间相互干扰，即辐射体之间的隔离度降低，从而影响天线性能。
参考图1，现有技术中，以柔性基板制作的天线模组，包括基板、贴合至基板上的辐射体以及为辐射体提供电性连接的接地体，辐射体和接地体均设置于基板的上表面，为了满足对不同频段信号的接收和发射，辐射体可以为两个或两个以上。由于相邻辐射体间距较小，相邻辐射体之间的空间电磁耦合和表面波耦合都存在，导致相邻辐射体之间的隔离度偏低，无法保证天线性能。
 技术解决方案
本申请的目的在于提供一种天线模组及应用该天线模组的终端设备，提高各辐射体之间的隔离度，改善天线模组的性能。
本申请的技术方案如下：
一种天线模组，包括基板、第一辐射体、第二辐射体、为所述第一辐射体馈电的第一馈电部以及为所述第二辐射体馈电的第二馈电部，所述第一辐射体和所述第二辐射体分别贴合至所述基板；
所述第一辐射体至少部分设置于所述基板的第一表面，所述第二辐射体至少部分设置于所述基板的第二表面，所述第一馈电部设置于所述第一表面，所述第二馈电部设置于所述第二表面。
 有益效果
本申请的有益效果在于：
通过将不同辐射体的馈电部设置在基板的不同表面，避免一辐射体在基板表面上激发的表面波传播至与其相邻的另一辐射体的馈电部，杜绝相邻辐射体之间的表面波耦合，从而提高相邻辐射体之间的隔离度。
 附图说明
图1为现有技术中的天线模组的结构示意图。
图2为本申请实施例1的天线模组的正面结构示意图。
图3为图2中沿A-A方向的截面结构示意图。
图4为本申请实施例2的天线模组的正面结构示意图。
图5为本申请实施例3的天线模组的正面结构示意图
图6为图5所示的天线模组的反面结构示意图。
图7为图5中沿B-B方向的截面结构示意图。
 本发明的实施方式
下面结合附图和实施方式对本申请作进一步说明。
实施例1
参考图2和图3，本申请公开了一种天线模组，包括基板10、第一辐射体23、第二辐射体24、为第一辐射体馈电的第一馈电部231以及为第二辐射体24馈电的第二馈电部241，第一辐射体23和第二辐射体24分别贴合至基板10；第一辐射体23至少部分设置于基板10的第一表面13，第二辐射体24至少部分设置于基板10的第二表面15，第一馈电部231设置于第一表面13，第二馈电部241设置于第二表面15。通过将相邻辐射体（第一辐射体23和第二辐射体24）的馈电部（第一馈电部231和第二馈电部241）设置在基板10的不同表面（第一表面13和第二表面15）上，避免一辐射体23在第一表面13上激发的表面波传播至与其相邻的第二辐射体24的第二馈电部241，杜绝相邻辐射体之间的表面波耦合，从而提高相邻辐射体之间的隔离度。
第一辐射体23或第二辐射体24可以是高频辐射体，也可以是低频辐射体。
相邻辐射体之间的电磁耦合的方式主要包括空间耦合和表面波耦合。相邻两辐射体的间距足够大，可以通过降低空间耦合提高隔离度，但是，移动终端设备越来越向轻薄、小型化发展，通过增大辐射体之间的间距来提高隔离度显然不能满足要求。
表面波是指在不同介质之间的界面传播的表面行波，属于机械波，当表面波在辐射体与基板10之间的界面传播时，遇到另一辐射体的馈电部，就发生了表面波耦合，本申请主要通过降低表面波耦合来提高隔离度。
优选的，在本具体实施例中，第一辐射体23和第一馈电部231均设置于基板10的第一表面13上，第二辐射体24和第二馈电部241均设置于基板10的第二表面15上，第一馈电部231和第二馈电部241分别设置于基板10的不同表面上，避免它们之间的表面波耦合，提高隔离度。
优选的，在本具体实施例中，天线模组还包括设置于第一表面13的第一接地体31以及设置于第二表面15的第二接地体32，第一接地体31和第二接地体32之间通过金属化通孔电性连接。第一接地体31和第二接地体32为互相电连接的上下层叠的接地体，能够增大现有技术中一层接地体的表面积，使接地体相对于辐射体更趋近于无穷大，在不增加接地体平面面积的同时，提高了天线的性能。
第一辐射体23或第二辐射体24可以由一个、两个或两个以上的辐射元件构成，每个辐射元件的形状可以为任意形状。
实施例2
实施例2与实施例1的不同之处在于，实施例2中的第一辐射体23包括第一辐射元件232和第二辐射元件233，第二辐射体24包括第三辐射元件242和第四辐射元件243。
参考图4，在实施例1的基础上，优选的，第一辐射体23包括第一辐射元件232和第二辐射元件233，其分别设置于不同的表面上，第一辐射元件232和第二辐射元件233电性连接，在本具体实施例中，第一辐射元件232和第一馈电部231电性连接，第一辐射元件232、第一馈电部231和第一接地体31均设置于第一表面13上，第二辐射元件233设置于第二表面15上，尽可能的让不同辐射体的不同辐射元件设置于基板10的不同表面，防止位于基板10同一表面的两个辐射体的辐射元件的表面波耦合，提高两个辐射体之间的隔离度。此时，第二辐射体24可以包括一个或两个辐射元件。
优选的，第二辐射体24包括第三辐射元件242和第四辐射元件243，其分别设于不同的表面上，第三辐射元件242和第四辐射元件243电性连接，在本具体实施例中，第三辐射元件242与第二馈电部241电性连接，第四辐射元件243层叠设置于第一表面13，第三辐射元件242、第二馈电部241和第二接地体32均层叠设置于第二表面15。
优选的，第一辐射元件232和第二辐射元件233至少部分正对设置；第三辐射元件242和第四辐射元件243至少部分正对设置。利用高度空间换平面空间的原理，降低辐射体在基板10上所占的平面空间，减少了辐射体的平面布局面积，满足现有终端设备小型化的需求。加之，两个辐射体的辐射单元尽量设置于基板10的不同表面，不仅节约了天线的平面空间，而且还提高了隔离度。
优选的，至少部分正对设置的辐射元件之间通过金属化通孔40电性连接。在本具体实施例中，第一辐射元件232和第二辐射元件233在正对设置的部分通过金属化通孔40电性连接；第三辐射元件242和第四辐射元件243在正对设置的部分通过金属化通孔40电性连接。金属化通孔40的个数可以是1个、2个或2个以上，优选的，为2个或2个以上。
实施例3
实施例3与实施例2的不同之处在于，实施例3中将基板10设置为双层基板，在双层基板中间增加了第三表面14，在第三表面14上增加了第三接地体33，基板层数增加，接地体的个数增加，便于使不同的辐射元件分别设置于不同的表面，增加各辐射元件之间的隔离度，从而提高天线模组的隔离度。
参考图5-图7，在实施例2的基础上，优选的，基板10包括上基板11和下基板12，上基板11的上表面为第一表面13，下基板12的上表面为第三表面14，下基板12的下表面为第二表面15，接地体包括层叠设置的三层接地体，分别为贴设于第一表面13的第一接地体31、贴设于第二表面15的第二接地体32和贴设于第三表面14的第三接地体33。
为了让各辐射元件尽可能的设置于不同的表面，以提高各辐射元件的隔离度，在本具体实施例中，第一辐射元件232与第一馈电部231电性连接，第一辐射元件232层叠设置于第一表面13，第二辐射元件233层叠设置于第二表面15，第三辐射元件242与第二馈电部241电性连接，第三辐射元件242层叠设置于第二表面15，第四辐射元件243层叠设置于第三表面14。
双层基板以及位于基板不同表面的各元件通过压合的方式成型。
在其它可选择的实施例中，基板10也可以为两层以上的多层基板，接地体也可以为三个以上的接地体，各辐射体可以包括两个以上的辐射元件，原则是尽可能让各辐射元件设置于不同的表面。
在上述各实施例中，优选的，基板10为柔性基板，可以为单层柔性基板、双层柔性基板或多层柔性基板等。
本申请还提供包括上述天线模组的终端设备，例如手机、笔记本电脑、平板电脑、播放器、耳机、智能手表、智能眼镜等。
以上所述的仅是本申请的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本申请创造构思的前提下，还可以做出改进，但这些均属于本申请的保护范围。

Claims (8)

  1. 一种天线模组，其特征在于，包括基板、第一辐射体、第二辐射体、为所述第一辐射体馈电的第一馈电部以及为所述第二辐射体馈电的第二馈电部，所述第一辐射体和所述第二辐射体分别贴合至所述基板；
    所述第一辐射体至少部分设置于所述基板的第一表面，所述第二辐射体至少部分设置于所述基板的第二表面，所述第一馈电部设置于所述第一表面，所述第二馈电部设置于所述第二表面。
  2. 根据权利要求1所述的天线模组，其特征在于，所述第一辐射体包括第一辐射元件和第二辐射元件，所述第一辐射元件和所述第二辐射元件电性连接，所述第一辐射元件与所述第一馈电部电性连接，所述第一辐射元件层叠设置于所述第一表面，所述第二辐射元件层叠设置于所述第二表面。
  3. 根据权利要求2所述的天线模组，其特征在于，所述第二辐射体包括第三辐射元件和第四辐射元件，所述第三辐射元件和所述第四辐射元件电性连接，所述第三辐射元件与所述第二馈电部电性连接，所述第四辐射元件层叠设置于所述第一表面，所述第三辐射元件层叠设置于所述第二表面。
  4. 根据权利要求2所述的天线模组，其特征在于，所述基板为双层基板，所述双层基板的中间还包括第三表面；
    所述第二辐射体包括第三辐射元件和第四辐射元件，所述第三辐射元件和所述第四辐射元件电性连接，所述第三辐射元件与所述第二馈电部电性连接，所述第三辐射元件层叠设置于所述第二表面，所述第四辐射元件层叠设置于所述第三表面。
  5. 根据权利要求3或4所述的天线模组，其特征在于，所述第一辐射元件和所述第二辐射元件至少部分正对设置；所述第三辐射元件和所述第四辐射元件至少部分正对设置。
  6. 根据权利要求5所述的天线模组，其特征在于，所述第一辐射元件和所述第二辐射元件在正对设置的部分通过金属化通孔电性连接；
    所述第三辐射元件和所述第四辐射元件在正对设置的部分通过金属化通孔电性连接。
  7. 根据权利要求1所述的天线模组，其特征在于，所述天线模组还包括设置于所述第一表面的第一接地体以及设置于所述第二表面的第二接地体，所述第一接地体和所述第二接地体之间通过金属化通孔电性连接。
  8. 一种终端设备，其特征在于，包括权利要求1~7任意一项所述的天线模组。
PCT/CN2020/117811 2020-09-02 2020-09-25 天线模组及应用该天线模组的终端设备 WO2022047868A1 (zh)

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