WO2019128181A1 - 微带天线和电视机 - Google Patents

微带天线和电视机 Download PDF

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Publication number
WO2019128181A1
WO2019128181A1 PCT/CN2018/094580 CN2018094580W WO2019128181A1 WO 2019128181 A1 WO2019128181 A1 WO 2019128181A1 CN 2018094580 W CN2018094580 W CN 2018094580W WO 2019128181 A1 WO2019128181 A1 WO 2019128181A1
Authority
WO
WIPO (PCT)
Prior art keywords
substrate
antenna
ground
segment
microstrip antenna
Prior art date
Application number
PCT/CN2018/094580
Other languages
English (en)
French (fr)
Inventor
尹柳中
谢仁礼
王子同
Original Assignee
深圳Tcl新技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳Tcl新技术有限公司 filed Critical 深圳Tcl新技术有限公司
Publication of WO2019128181A1 publication Critical patent/WO2019128181A1/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
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
    • 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
    • H01Q1/48—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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/64—Constructional details of receivers, e.g. cabinets or dust covers

Definitions

  • the present application relates to the field of antenna technologies, and in particular, to a microstrip antenna and a television set.
  • a general microstrip antenna is formed by applying a metal foil as a ground plane on the back side of the dielectric substrate, and a metal patch (ie, a microstrip antenna) having a certain shape on the front side by lithography etching, and a common rectangular and circular shape is used.
  • a planar antenna formed by a line or microstrip line feed to a patch also known as a microstrip antenna.
  • the working principle of the microstrip antenna is that the metal patch is equivalent to an inductor-capacitor resonant circuit, which generates electromagnetic resonance on the metal patch through the coaxially fed electromagnetic wave, and finally radiates or receives the electromagnetic wave energy.
  • the microstrip antenna is characterized by a thin profile, a small size, light weight, low cost, easy mass production, and easy to conform to various object shells such as airplanes, satellites and even warheads.
  • the microstrip antenna is a planar structure that is easy to integrate with other circuits.
  • the current microstrip antenna has not been applied to smart TVs, mainly because the existing microstrip antennas make the forward gain of smart TVs lower.
  • the main purpose of the present application is to propose a microstrip antenna, which aims to solve the technical problem of low forward gain existing in existing television sets.
  • the microstrip antenna of the present application includes a substrate, the substrate includes a first surface and a second surface disposed opposite to the first surface, the microstrip antenna further comprising:
  • a feeding portion disposed on the first surface of the substrate
  • the antenna portion is disposed on the first surface of the substrate, the antenna portion is disposed in a rectangular shape, and a long side of the antenna portion is provided with two rectangular slots parallel to the short side, and the antenna portion is opened
  • the long side of the rectangular slot is electrically connected to the ground layer through a plurality of metal through holes, and the antenna portion includes a connecting portion between the two rectangular slots, and the connecting portion is electrically connected to the feeding portion.
  • the two rectangular slots are symmetrically distributed on both sides of the midpoint of the long side of the antenna portion.
  • the width of the antenna portion is W
  • the depth of the rectangular groove is H, wherein 2/3W ⁇ H ⁇ W.
  • the through hole of the metal has a diameter ranging from 0.1 mm to 0.3 mm.
  • the ground layer is disposed in an "I" shape, and the ground layer includes a first ground segment, a second ground segment, and a third ground segment connecting the first ground segment and the second ground segment.
  • a projection of the antenna portion on a second surface of the substrate is within the first ground segment, and a projection of the feed portion at a second surface of the substrate is within the third ground segment.
  • the ground layer further includes two fourth ground segments on both sides of the third ground segment, and the two ground segments are connected to the third ground segment, and the third ground segment is opened.
  • the first jack has a second jack corresponding to the position of the first jack.
  • the substrate is an FR4 epoxy resin board, and the substrate has a thickness of 1.6 mm.
  • the present application also provides a television set having a microstrip antenna mounted thereon, the microstrip antenna including a substrate, the substrate including a first surface and a second surface disposed opposite the first surface,
  • the microstrip antenna is a magnetic current source antenna, and the microstrip antenna further includes:
  • a feeding portion disposed on the first surface of the substrate
  • the antenna portion is disposed on the first surface of the substrate, the antenna portion is disposed in a rectangular shape, and a long side of the antenna portion is provided with two rectangular slots parallel to the short side, and the antenna portion is opened
  • the long side of the rectangular slot is electrically connected to the ground layer through a plurality of metal through holes, and the antenna portion includes a connecting portion between the two rectangular slots, and the connecting portion is electrically connected to the feeding portion.
  • the microstrip antenna of the present application is provided with an antenna portion on a first surface of the substrate, wherein the antenna portion is rectangularly disposed, and two rectangular slots parallel to the short sides are formed on one long side of the antenna portion, and the antenna portion is opened.
  • the long side of the rectangular slot is electrically connected to the ground layer through a plurality of metal through holes
  • the antenna portion includes a connecting portion between the two rectangular slots
  • the connecting portion is electrically connected to the feeding Ministry of Electricity.
  • the metal through hole short-circuits the long side of the antenna portion in which the rectangular groove is opened and the ground layer, and the other long side of the antenna portion opposite to the long side where the rectangular groove is opened is used as the radiation portion.
  • the microstrip antenna of the present application has a simple manufacturing process, low cost, and can improve the forward gain of the television, thereby making the voice of the television more smooth and without the problem of picture jamming.
  • FIG. 1 is a schematic front view of a microstrip antenna of the present application
  • FIG. 2 is a schematic view showing the reverse structure of the microstrip antenna of FIG. 1;
  • Figure 3 is a dimensional view of the microstrip antenna of Figure 1;
  • FIG. 4 is a S-parameter graph of the microstrip antenna of FIG. 1;
  • Figure 5 is a three-dimensional gain pattern of the microstrip antenna of Figure 1;
  • Figure 6 is a cross-sectional view showing a three-dimensional gain pattern of the microstrip antenna of Figure 5;
  • Fig. 7 is a schematic view showing the assembly of the reflector of the microstrip antenna and the television of the present application.
  • the directional indication is only used to explain in a certain posture (as shown in the drawing) The relative positional relationship, the motion situation, and the like of the fields of the components are shown. If the specific posture changes, the directional indication changes accordingly.
  • the present application proposes a microstrip antenna 100.
  • the microstrip antenna 100 of the present application includes a substrate 10 including a first surface 11 and a second surface 12 disposed opposite to the first surface 11 , the microstrip antenna 100 further includes a power feeding portion 20, a ground layer 40, and an antenna portion 30.
  • the power feeding portion 20 is disposed on the first surface 11 of the substrate 10; the ground layer 40 is disposed on the second surface 12 of the substrate 10.
  • the antenna portion 30 is disposed on the first surface 11 of the substrate 10, and the antenna portion 30 is disposed in a rectangular shape.
  • the long side of the antenna portion 30 is provided with two rectangular slots 31 parallel to the short sides.
  • the long side of the rectangular portion 31 of the antenna portion 30 is electrically connected to the ground layer 40 through a plurality of metal through holes 32.
  • the antenna portion 30 includes a connecting portion 33 between the rectangular slots 31.
  • the connecting section 33 is electrically connected to the feeding part 20 .
  • the substrate 10 is a double-sided PCB (Printed Circuit) Board, printed circuit board).
  • the selection of the substrate 10 affects the performance of the microstrip antenna 100, such as the gain and volume of the microstrip antenna 100, and the thickness of the substrate 10 also affects the volume and weight of the microstrip antenna 100.
  • the substrate 10 is preferably an FR4 epoxy resin sheet, and its thickness may be 0.8 mm to 2.0 mm.
  • the substrate 10 has a thickness of 1.6 mm.
  • the length and width of the antenna portion 30 affect the impedance matching and the directivity function of the microstrip antenna 100, etc., thereby affecting the radiation efficiency of the microstrip antenna 100. At the same time, the length and width of the antenna portion 30 directly affect the volume of the microstrip antenna 100. .
  • the antenna portion 30 is rectangularly disposed, and has a length of 1/2 medium wavelength and a width of 1/4 medium wavelength.
  • the long side of the rectangular portion 31 of the antenna portion 30 is electrically connected to the ground layer 40 through a plurality of metal through holes 32.
  • the antenna portion 30 includes a connection between the rectangular slots 31.
  • the connecting portion 33 is electrically connected to the feeding portion 20, wherein the metal through hole 32 short-circuits the long side of the antenna portion 30 in which the rectangular groove 31 is opened and the ground layer 40.
  • the other long side of the antenna portion 30 opposite to the long side on which the rectangular groove 31 is opened is used as a radiating portion for transmitting and receiving electromagnetic wave signals, so that the gain of the microstrip antenna 100 can be improved.
  • the rectangular grooves 31 have the same shape, and the groove depths of the two rectangular grooves 31 are smaller than the width of the antenna portion 30.
  • the connecting section 33 is located between the two rectangular slots 31.
  • the position distribution of the connecting section 33 is closely related to the positional distribution of the two rectangular slots 31.
  • the connecting portion 33 is located at the middle of the long side of the antenna portion 30;
  • the connecting segment 33 is located at one end of the long side of the antenna portion 30, but this affects the microstrip antenna 100.
  • the non-circularity of the pattern in order to reduce the out-of-roundness of the microstrip antenna 100, the two rectangular slots 31 are symmetrically distributed on both sides of the midpoint of the long side of the antenna portion 30.
  • the feeding portion 20 is disposed in a rectangular shape, and the width of the connecting portion 33 may be greater than the width of the feeding portion 20, or may be equal to the width of the feeding portion 20, and may of course be smaller than the feeding portion 20
  • the width is not specifically limited here.
  • the width of the connecting section 33 is greater than the width of the feeding portion 20, which is advantageous for achieving impedance matching.
  • the microstrip antenna 100 of the present application is provided with an antenna portion 30 disposed on the first surface 11 of the substrate 10.
  • the antenna portion 30 is disposed in a rectangular shape, and two rectangular slots 31 parallel to the short sides are formed on one long side of the antenna portion 30.
  • the long side of the rectangular portion 31 of the antenna portion 30 is electrically connected to the ground layer 40 through a plurality of metal through holes 32.
  • the antenna portion 30 is disposed between the two rectangular slots 31.
  • the connecting section 33 is electrically connected to the feeding part 20 . In this manner, the metal through hole 32 short-circuits the long side of the antenna portion 30 in which the rectangular groove 31 is opened, and the ground layer 40, and the other length of the antenna portion 30 opposite to the long side where the rectangular groove 31 is opened is opposite.
  • the side serves as a radiation portion for transmitting and receiving electromagnetic wave signals, which can increase the gain of the microstrip antenna 100.
  • the microstrip antenna 100 of the present application has a simple manufacturing process, low cost, and can improve the forward gain of the television, thereby making the voice of the television more smooth and without the problem of picture jamming.
  • the antenna portion 30 has a width W
  • the rectangular groove 31 has a depth H, wherein 2/3 W ⁇ H ⁇ W. Both the depth and the groove width of the rectangular groove 31 affect the length and width of the antenna portion 30, thereby affecting the volume, gain, radiation efficiency, and the like of the microstrip antenna 100.
  • the groove width of the rectangular groove 31 is smaller than the width of the connecting segment 33.
  • the lower end of the connecting portion 33 is tapered, so that the distance between the connecting portion 33 and the metal through hole 32 can be increased, which is advantageous for improving the radiation efficiency of the microstrip antenna 100.
  • the number of metal vias 32 also affects the radiation efficiency of the microstrip antenna 100. Generally, the greater the number of metal vias 32, the higher the radiation efficiency of the microstrip antenna 100.
  • the shape of the metal through hole 32 may be various, for example, it may be a circular shape, the circular hole may be easily formed, or may be square.
  • the metal through hole 32 is a circular hole, and the metal through hole 32 has a diameter ranging from 0.1 mm to 0.3 mm.
  • the metal through hole 32 has a hole diameter of 0.2 mm.
  • the ground layer 40 is disposed in an "I" shape, and the ground layer 40 includes a first ground segment 41, a second ground segment 42, and a connection between the first ground segment 41 and the second interface. a third grounding section 43 of the section 42, a projection of the antenna portion 30 on the second surface 12 of the substrate 10 in the first grounding segment 41, and a second feeding of the feeding portion 20 in the substrate 10 The projection of the surface 12 is within the third ground segment 43.
  • the first grounding segment 41 and the second grounding segment 42 are connected by the third grounding segment 43, which can effectively reduce electromagnetic interference.
  • the ground layer 40 further includes two fourth grounding segments 44 on both sides of the third grounding section 43, and the two fourth grounding sections 44 are connected to the third grounding section 43.
  • the third grounding section 43 is provided with a first insertion hole 45
  • the substrate 10 is provided with a second insertion hole 46 corresponding to the position of the first insertion hole 45.
  • the length of the antenna portion 30 is 26.8 mm
  • the width of the antenna portion 30 is 14 mm
  • the depth of the rectangular groove 31 is 9.8 mm.
  • the groove width is 0.8 mm
  • the width of the connecting portion 33 is 2.4 mm.
  • the power feeding portion 20 has a width of 2.0 mm.
  • the resonant frequency of the microstrip antenna 100 of the present embodiment is close to 2.45 GHz
  • the standing wave ratio (VSWR) is less than 2
  • the spatial omnidirectional radiation is less than 1 dB.
  • the present application also provides a television set, on which the microstrip antenna 100 is mounted.
  • the specific structure of the microstrip antenna 100 is as described above. Since the microstrip antenna 100 adopts all the technical solutions of all the above embodiments, Therefore, at least all the beneficial effects brought about by the technical solutions of the foregoing embodiments are not described herein.
  • the back side of the television set is provided with a mounting board 200, and the mounting board 200 is provided with a plug end adapted to the first jack 45 and the second jack 46 (as shown in FIG. 7). The plug end is inserted into the first jack 45 and the second jack 46. In this way, grounding the mounting board 200 can further enhance the forward gain of the television set, and is also beneficial for mitigating electromagnetic interference caused by the surrounding main board.
  • the impedance matching of the microstrip antenna 100 is not affected by the metal background.
  • the forward gain of the television set is greater than -4 dBi. While the forward gain of existing television sets is generally greater than -10 dBi, the television of the present application greatly increases its forward gain.
  • the microstrip antenna 100 of the present application adopts a side feeding mode, which saves space and is advantageous for miniaturization. Meanwhile, the microstrip antenna 100 of the present application reduces the feeding loss and avoids distortion of the pattern.

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Abstract

本申请公开一种微带天线和电视机，其中，微带天线包括基板，所述基板包括第一表面及与所述第一表面相对设置的第二表面，所述微带天线还包括馈电部、接地层和天线部，所述馈电部设置于所述基板的第一表面；所述接地层设置于所述基板的第二表面；所述天线部设置于所述基板的第一表面，所述天线部呈矩形设置，所述天线部的一长边上开设有与短边平行的两矩形槽，所述天线部的开设有所述矩形槽的长边通过多个金属贯孔与所述接地层电性连接，所述天线部包括位于两所述矩形槽之间的连接段，所述连接段电性连接所述馈电部。

Description

微带天线和电视机
技术领域
本申请涉及天线技术领域，特别涉及一种微带天线和电视机。
背景技术
一般的微带天线是在介质基片背面敷上金属箔作为接地面，正面用光刻腐蚀技术作出一定形状的金属贴片（即微带天线），常见的有矩形和圆形，用同轴线或微带线对贴片馈电所构成的平面天线，又称为微带天线。微带天线的工作原理是金属贴片相当于一个电感电容谐振电路，通过同轴馈电的电磁波在金属贴片产生电磁谐振，最后把电磁波能量辐射出去或接收下来。
微带天线的特点是剖面薄，微带天线体积小、重量轻，成本低，易于批量生产，易于与飞机、卫星甚至弹头等各种物体外壳共形。微带天线是平面结构，易于与其他电路集成。但是，目前微带天线尚未应用在智能电视上，主要原因是现有的微带天线使得智能电视的前向增益较低。
发明内容
本申请的主要目的是提出一种微带天线，旨在解决现有的电视机存在的前向增益较低的技术问题。
为实现上述目的，本申请提出的微带天线，包括基板，所述基板包括第一表面及与所述第一表面相对设置的第二表面，所述微带天线还包括：
馈电部，设置于所述基板的第一表面；
接地层，设置于所述基板的第二表面；
天线部，设置于所述基板的第一表面，所述天线部呈矩形设置，所述天线部的一长边上开设有与短边平行的两矩形槽，所述天线部的开设有所述矩形槽的长边通过多个金属贯孔与所述接地层电性连接，所述天线部包括位于两所述矩形槽之间的连接段，所述连接段电性连接所述馈电部。
可选地，两所述矩形槽对称分布在所述天线部的长边中点连线的两侧。
可选地，所述天线部的宽度为W，所述矩形槽的深度为H，其中，2/3W≤H≤W。
可选地，所述金属贯孔的孔径范围为0.1mm~0.3mm。
可选地，所述接地层呈“工”字形设置，所述接地层包括第一接地段、第二接地段及连接所述第一接地段与所述第二接地段的第三接地段，所述天线部在所述基板的第二表面的投影在所述第一接地段内，所述馈电部在所述基板的第二表面的投影在所述第三接地段内。
可选地，所述接地层还包括位于所述第三接地段两侧的两第四接地段，两所述第四接地段均与所述第三接地段连接，所述第三接地段开设有第一插孔，所述基板上开设有与所述第一插孔位置对应的第二插孔。
可选地，所述基板为FR4环氧树脂板，所述基板的厚度为1.6mm。
本申请还提出一种电视机，所述电视机上安装有微带天线，所述微带天线包括基板，所述基板包括第一表面及与所述第一表面相对设置的第二表面，所述微带天线为磁流源天线，所述微带天线还包括：
馈电部，设置于所述基板的第一表面；
接地层，设置于所述基板的第二表面；
天线部，设置于所述基板的第一表面，所述天线部呈矩形设置，所述天线部的一长边上开设有与短边平行的两矩形槽，所述天线部的开设有所述矩形槽的长边通过多个金属贯孔与所述接地层电性连接，所述天线部包括位于两所述矩形槽之间的连接段，所述连接段电性连接所述馈电部。
本申请微带天线通过在基板的第一表面设置天线部，所述天线部呈矩形设置，所述天线部的一长边上开设有与短边平行的两矩形槽，所述天线部的开设有所述矩形槽的长边通过多个金属贯孔与所述接地层电性连接，所述天线部包括位于两所述矩形槽之间的连接段，所述连接段电性连接所述馈电部。如此，所述金属贯孔将所述天线部的开设有矩形槽的长边与接地层短路连接，所述天线部的与开设有矩形槽的长边相对的另一长边作为辐射部，用以收发电磁波信号，这样能够提高所述微带天线的增益。本申请微带天线制作工艺简单，成本较低，且能够提高电视机的前向增益，从而使得电视机的语音更加流畅，不会出现画面卡顿的问题。
附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图示出的结构获得其他的附图。
图1为本申请微带天线的正面结构示意图；
图2为图1中微带天线的反面结构示意图；
图3为图1中微带天线的尺寸图；
图4为图1中微带天线的S参数曲线图；
图5为1中微带天线的三维增益方向图；
图6为5中微带天线的三维增益方向图的截面图；
图7为本申请微带天线与电视机的反射板的装配示意图。
附图标号说明：
标号 名称 标号 名称
100 微带天线 40 接地层
10 基板 41 第一接地段
11 第一表面 42 第二接地段
12 第二表面 43 第三接地段
20 馈电部 44 第四接地段
30 天线部 45 第一插孔
31 矩形槽 46 第二插孔
32 金属贯孔 200 安装板
33 连接段
本申请目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请的一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
需要说明，若本申请实施例中有涉及方向性指示（诸如上、下、左、右、前、后……），则该方向性指示仅用于解释在某一特定姿态（如附图所示）下各部件之域的相对位置关系、运动情况等，如果该特定姿态发生改变时，则该方向性指示也相应地随之改变。
另外，若本申请实施例中有涉及“第一”、“第二”等的描述，则该“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，各个实施例之域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，也不在本申请要求的保护范围之内。
本申请提出一种微带天线100。
参照图1至图2，本申请提出的微带天线100，包括基板10，所述基板10包括第一表面11及与所述第一表面11相对设置的第二表面12，所述微带天线100还包括馈电部20、接地层40及天线部30，所述馈电部20设置于所述基板10的第一表面11；所述接地层40设置于所述基板10的第二表面12。所述天线部30设置于所述基板10的第一表面11，所述天线部30呈矩形设置，所述天线部30的一长边上开设有与短边平行的两矩形槽31，所述天线部30的开设有所述矩形槽31的长边通过多个金属贯孔32与所述接地层40电性连接，所述天线部30包括位于两所述矩形槽31之间的连接段33，所述连接段33电性连接所述馈电部20。
具体地，所述基板10为双面PCB（Printed Circuit Board，印刷电路板）。所述基板10的选材会影响所述微带天线100的性能，例如，微带天线100的增益和体积等，并且基板10的厚度也会影响微带天线100的体积和重量。在本实施例中，为了减少成本，所述基板10优选为FR4环氧树脂板，其厚度可以为0.8mm~2.0mm。可选地，所述基板10的厚度为1.6mm。
天线部30的长宽会影响微带天线100的阻抗匹配及方向性函数等，从而会影响微带天线100的辐射效率，同时，天线部30的长宽也会直接影响微带天线100的体积。在本实施例中，天线部30呈矩形设置，其长度为1/2个介质波长，宽度为1/4个介质波长。所述天线部30的开设有所述矩形槽31的长边通过多个金属贯孔32与所述接地层40电性连接，所述天线部30包括位于两所述矩形槽31之间的连接段33，所述连接段33电性连接所述馈电部20，在此，所述金属贯孔32将所述天线部30的开设有矩形槽31的长边与接地层40短路连接，所述天线部30的与开设有矩形槽31的长边相对的另一长边作为辐射部，用以收发电磁波信号，这样能够提高所述微带天线100的增益。
两所述矩形槽31的形状相同，且两所述矩形槽31的槽深均小于所述天线部30的宽度。关于两所述矩形槽31的分布位置，在此不做具体限制。需要指出的是，所述连接段33位于两所述矩形槽31之间，如此，所述连接段33的位置分布与两所述矩形槽31的位置分布密切相关。例如，当两所述矩形槽31对称分布在所述天线部30的长边中点连线的两侧时，所述连接段33位于所述天线部30的长边的中间位置；当两所述矩形槽31分布在所述天线部30的长边中点连线的一侧时，所述连接段33位于所述天线部30的长边的一端，但这样会影响所述微带天线100的方向图的不圆度。在一较佳实施例中，为了减小微带天线100的不圆度，两所述矩形槽31对称分布在所述天线部30的长边中点连线的两侧。
所述馈电部20呈矩形设置，所述连接段33的宽度可以大于所述馈电部20的宽度，也可以等于所述馈电部20的宽度，当然还可以小于所述馈电部20的宽度，在此也不做具体限制。可选地，所述连接段33的宽度大于所述馈电部20的宽度，如此有利于实现阻抗匹配。
本申请微带天线100通过在基板10的第一表面11设置天线部30，所述天线部30呈矩形设置，所述天线部30的一长边上开设有与短边平行的两矩形槽31，所述天线部30的开设有所述矩形槽31的长边通过多个金属贯孔32与所述接地层40电性连接，所述天线部30包括位于两所述矩形槽31之间的连接段33，所述连接段33电性连接所述馈电部20。如此，所述金属贯孔32将所述天线部30的开设有矩形槽31的长边与接地层40短路连接，所述天线部30的与开设有矩形槽31的长边相对的另一长边作为辐射部，用以收发电磁波信号，这样能够提高所述微带天线100的增益。本申请微带天线100制作工艺简单，成本较低，且能够提高电视机的前向增益，从而使得电视机的语音更加流畅，不会出现画面卡顿的问题。
在一较佳实施例中，所述天线部30的宽度为W，所述矩形槽31的深度为H，其中，2/3W≤H≤W。所述矩形槽31的深度和槽宽均会影响所述天线部30的长宽，从而影响所述微带天线100的体积、增益及辐射效率等。其中，所述矩形槽31的槽宽小于所述连接段33的宽度。
进一步地，所述连接段33的下端呈渐缩设置，这样可以增加连接段33与金属贯孔32之间的距离，有利于提高微带天线100的辐射效率。
所述金属贯孔32的数目也会影响微带天线100的辐射效率，一般来说，金属贯孔32的数目越多，微带天线100的辐射效率越高。金属贯孔32的形状可以有多种，例如，可以为圆形，圆形孔便于成型，也可以为方形。在本实施例中，金属贯孔32为圆形孔，所述金属贯孔32的孔径范围为0.1mm~0.3mm，可选地，所述金属贯孔32的孔径为0.2mm。
在本实施例中，所述接地层40呈“工”字形设置，所述接地层40包括第一接地段41、第二接地段42及连接所述第一接地段41与所述第二接地段42的第三接地段43，所述天线部30在所述基板10的第二表面12的投影在所述第一接地段41内，所述馈电部20在所述基板10的第二表面12的投影在所述第三接地段43内。在此，所述第一接地段41与所述第二接地段42之间通过第三接地段43连接，可以有效地减少电磁干扰。
进一步地，所述接地层40还包括位于所述第三接地段43两侧的两第四接地段44，两所述第四接地段44均与所述第三接地段43连接，所述第三接地段43开设有第一插孔45，所述基板10上开设有与所述第一插孔45位置对应的第二插孔46。
请参照图3，在本实施例中，所述天线部30的长度为26.8mm，所述天线部30的宽度为14mm，所述矩形槽31的深度均为9.8mm，所述矩形槽31的槽宽均为0.8mm，所述连接段33的宽度为2.4mm。所述馈电部20的宽度为2.0mm。请参照图4、图5及图6，本实施例微带天线100的谐振频率接近2.45GHz，驻波比（VSWR）小于2，空间全向性辐射，不圆度小于1dB。
本申请还提出一种电视机，该电视机上安装有微带天线100，所述微带天线100的具体结构参照上述实施例，由于本微带天线100采用了上述所有实施例的全部技术方案，因此至少具有上述实施例的技术方案所带来的所有有益效果，在此不再一一赘述。具体地，电视机的背面设置有安装板200，所述安装板200上设置有与所述第一插孔45和所述第二插孔46适配的插接端（如图7所示），所述插接端插入所述第一插孔45和所述第二插孔46。如此，将安装板200接地，可以进一步地增强电视机的前向增益，也有利于减轻周围主板带来的电磁干扰。
在此，需要指出的是，所述微带天线100的阻抗匹配不受金属背景影响，将该微带天线100安装到电视机上后，电视机的前向增益大于-4dBi。而现有的电视机的前向增益一般大于-10dBi，所以，本申请的电视机大大提高了其前向增益。此外，本申请微带天线100采用侧馈方式，节省了空间面积，有利于实现小型化；同时，本申请微带天线100减小了馈电损耗，避免了方向图畸变。
以上所述仅为本申请的优选实施例，并非因此限制本申请的专利范围，凡是在本申请的发明构思下，利用本申请说明书及附图内容所作的等效结构变换，或直接/域接运用在其他相关的技术领域均包括在本申请的专利保护范围内。

Claims (14)

  1. 一种微带天线，包括基板，所述基板包括第一表面及与所述第一表面相对设置的第二表面，其中，所述微带天线还包括：
    馈电部，设置于所述基板的第一表面；
    接地层，设置于所述基板的第二表面；
    天线部，设置于所述基板的第一表面，所述天线部呈矩形设置，所述天线部的一长边上开设有与短边平行的两矩形槽，所述天线部的开设有所述矩形槽的长边通过多个金属贯孔与所述接地层电性连接，所述天线部包括位于两所述矩形槽之间的连接段，所述连接段电性连接所述馈电部。
  2. 如权利要求1所述的微带天线，其中，两所述矩形槽对称分布在所述天线部的长边中点连线的两侧。
  3. 如权利要求2所述的微带天线，其中，所述天线部的宽度为W，所述矩形槽的深度为H，其中，2/3W≤H≤W。
  4. 如权利要求1所述的微带天线，其中，所述金属贯孔的孔径范围为0.1mm~0.3mm。
  5. 如权利要求1所述的微带天线，其中，所述接地层呈“工”字形设置，所述接地层包括第一接地段、第二接地段及连接所述第一接地段与所述第二接地段的第三接地段，所述天线部在所述基板的第二表面的投影在所述第一接地段内，所述馈电部在所述基板的第二表面的投影在所述第三接地段内。
  6. 如权利要求5所述的微带天线，其中，所述接地层还包括位于所述第三接地段两侧的两第四接地段，两所述第四接地段均与所述第三接地段连接，所述第三接地段开设有第一插孔，所述基板上开设有与所述第一插孔位置对应的第二插孔。
  7. 如权利要求1所述的微带天线，其中，所述基板为FR4环氧树脂板，所述基板的厚度为1.6mm。
  8. 一种电视机，其中，所述电视机上安装有如权利1所述的微带天线。
  9. 如权利要求8所述的电视机，其中，所述微带天线的两所述矩形槽对称分布在所述天线部的长边中点连线的两侧。
  10. 如权利要求9所述的电视机，其中，所述天线部的宽度为W，所述矩形槽的深度为H，其中，2/3W≤H≤W。
  11. 如权利要求8所述的电视机，其中，所述金属贯孔的孔径范围为0.1mm~0.3mm。
  12. 如权利要求8所述的电视机，其中，所述接地层呈“工”字形设置，所述接地层包括第一接地段、第二接地段及连接所述第一接地段与所述第二接地段的第三接地段，所述天线部在所述基板的第二表面的投影在所述第一接地段内，所述馈电部在所述基板的第二表面的投影在所述第三接地段内。
  13. 如权利要求12所述的电视机，其中，所述接地层还包括位于所述第三接地段两侧的两第四接地段，两所述第四接地段均与所述第三接地段连接，所述第三接地段开设有第一插孔，所述基板上开设有与所述第一插孔位置对应的第二插孔。
  14. 如权利要求8所述的电视机，其中，所述基板为FR4环氧树脂板，所述基板的厚度为1.6mm。
PCT/CN2018/094580 2017-12-25 2018-07-05 微带天线和电视机 WO2019128181A1 (zh)

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