WO2017166422A1 - 一种天线 - Google Patents

一种天线 Download PDF

Info

Publication number
WO2017166422A1
WO2017166422A1 PCT/CN2016/084086 CN2016084086W WO2017166422A1 WO 2017166422 A1 WO2017166422 A1 WO 2017166422A1 CN 2016084086 W CN2016084086 W CN 2016084086W WO 2017166422 A1 WO2017166422 A1 WO 2017166422A1
Authority
WO
WIPO (PCT)
Prior art keywords
slot
antenna
metal plate
metal
terminal
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2016/084086
Other languages
English (en)
French (fr)
Inventor
韩崇志
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
Original Assignee
Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
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 Yulong Computer Telecommunication Scientific Shenzhen Co Ltd filed Critical Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
Publication of WO2017166422A1 publication Critical patent/WO2017166422A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/10—Resonant slot antennas
    • 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
    • H01Q1/44—Details of, or arrangements associated with, antennas using equipment having another main function to serve additionally as an antenna, e.g. means for giving an antenna an aesthetic aspect
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
    • H01Q25/02—Antennas or antenna systems providing at least two radiating patterns providing sum and difference patterns
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/22—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the orientation in accordance with variation of frequency of radiated wave

Definitions

  • the present invention relates to the field of terminal antennas, and in particular, to an antenna and a terminal.
  • the mobile phone adopts a metal casing more and more, but when the mobile phone uses a metal material casing, it also has a great influence on the radiation performance of the antenna. (Because of the environment of the back cover and the frame, the clearance of the antenna radiation is greatly reduced, affecting the performance of the antenna radiator). With the widespread coverage of networks such as 4G networks, mobile phone user experience is increasingly dependent on high-frequency antennas. That is, ensuring user experience requires the use of metal casings to increase the radiation capability and bandwidth of cell phone antennas. When designing the antenna, the metal frame or metal cover is used as part of the terminal antenna.
  • the antenna design of the existing metal-shell mobile phone the antenna cannot be tuned or the tunability of the pattern cannot be achieved during the tuning process, which results in the terminal antenna not being able to effectively accept external signals in all directions, that is, existing
  • the antenna design of a mobile phone using a metal casing in the technology has a problem of insufficient stability in receiving external signals.
  • An antenna wherein the antenna is a rectangular metal plate, and the metal plate is provided with a first slot and a second slot perpendicular to a long side of the metal plate and penetrating the metal plate, and the a slotted opening and an opening of the second slot are respectively located on long sides of opposite sides of the metal plate, and the metal plate is further provided with a cross connecting the two sides of the first slot a tunable capacitor and across the second slot a second adjustable capacitor connected to the two sides, wherein the metal plate is further provided with a feeding point, and the feeding point is located on a side of the first slot or the second slot.
  • the first slot is the same length as the second slot.
  • the first slot has a length of 8-10 mm, a width of 1-2 mm, and a distance of 4-5 mm from the first short side of the metal plate.
  • the second slot has a length of 8-10 mm and a width of 1-2 mm, parallel to the first slot, and extends in a direction of a long side of the metal plate.
  • the upper slot is 1.3-2.5 mm from the first slot, and the first slot is closer to the first short side than the first slot.
  • the first adjustable capacitance is 2.1-3.2 mm from the opening of the first slot, and the adjustment range is 0.5 PF-1.5 PF.
  • the second adjustable capacitor is 2.3-3.3 mm from the opening of the second slot, and the adjustment range is 0.5 PF-1.5 PF.
  • the feeding point is located on a side of the second slot adjacent to the first slot, and the distance from the second adjustable capacitor is less than 5 mm. .
  • the metal plate is a metal layer in the PCB board.
  • a terminal is also proposed. .
  • a terminal comprising a PCB board and a metal back cover, the PCB board being the PCB board described in claim 8.
  • the terminal further includes a metal back cover, the metal back cover includes a first metal portion and a second metal portion, and a gap is disposed between the first metal portion and the second metal portion. Filled with an insulating material, a projection of the slit on a plane of the PCB board is parallel to the first slot and the second slot, and the projection is located in the first slot and the second slot between.
  • the antenna system is provided with two slotted antennas through two slots provided on both sides of the rectangular metal plate, thereby improving the bandwidth of the antenna radiation.
  • the range of frequency bandwidths that can be covered is wider.
  • the equivalent antenna length and the resonance frequency of the two slotted antennas in the antenna system are changed, thereby achieving two openings.
  • the reconstruction of the pattern of the antenna system superimposed by the pattern of the slot antenna that is, the adjustment of the maximum gain direction of the antenna pattern by adjusting the capacitance value of the adjustable capacitor. Therefore, when the external environment of the terminal changes, the maximum gain direction of the antenna pattern can be adjusted accordingly, ensuring that the natural disaster can achieve the most efficient signal receiving efficiency in any environment, and ensuring the user is good in any environment.
  • the call experience enhances the user experience.
  • a part of the metal back cover of the terminal is also used as a radiator of the antenna, which increases the area and volume of the antenna radiator, and improves the radiation efficiency of the antenna radiation.
  • FIG. 1 is a schematic structural view of an antenna in an embodiment
  • FIG. 2 is a schematic diagram of an operation mode corresponding to the foregoing antenna system corresponding to an S11 parameter (return loss) in an embodiment
  • Figure 3 is a perspective view of the aforementioned antenna system in an embodiment
  • FIG. 4 is a schematic structural diagram of a terminal using the foregoing antenna in an embodiment.
  • antenna is suitable for the all-metal housing design, that is, the back cover of the terminal is made of metal, and the frame structure of the terminal is also made of metal. As shown in FIG. 1, the antenna has a rectangular plate-shaped structure and is made of a metal material.
  • the antenna is an antenna of a terminal (such as a smart phone, a tablet computer, etc.), and the antenna may be a part of the back cover of the terminal, or may be a metal layer of a PCB version of the terminal.
  • the antenna is a rectangular plate-shaped structure 10 made of a metal material (that is, the antenna is a rectangular metal plate 10 ).
  • a first slot 102 and a second slot 104 perpendicular to the long side of the metal plate 10 and extending through the metal plate are disposed on the metal plate, and the opening 1021 of the first slot 102 and the opening 1041 of the second slot 104 are respectively Located on the long sides of the opposite sides of the metal plate 10.
  • the rectangular metal material antenna has two long sides, and referring to the orientations in FIG. 1, the left long side and the right long side, respectively.
  • the "left" and “right” orientation words herein define two different long sides for distinguishing only, and the actual naming of the long sides of the metal plate 10 is not limited.
  • the first long groove 102 is disposed on the left long side of the metal plate 10, and the first groove 102 is a linear groove, and the extending direction is perpendicular to the left long side, and the first groove 102 is penetrated.
  • Metal plate 10 is disposed on the left long side of the metal plate 10.
  • the right long side of the metal plate 10 is provided with a second slot 104 having an opening 1041 on the right long side, and the second slot 104 is a linear slot extending in a direction perpendicular to the right long side and the second slotted 104 penetrates the metal plate 10.
  • the first slot 102 and the second slot 104 can be regarded as two slot antennas or slotted antennas, and the antenna can be made compared to the conventional antenna design with only one slot.
  • the system has one more antenna, that is, one more antenna, which greatly increases the bandwidth of the antenna, so that the antenna can cover a wider range of bandwidth.
  • the S11 parameter (return loss) of the above antenna system in an operating mode is shown in FIG. 2. It can be seen from the figure that the above antenna system can achieve good low frequency characteristics, specific The low frequency region is in the range of 791 to 960 MHz.
  • the metal plate 10 is further provided with a first adjustable capacitor 1022 connected across the two sides of the first slot 102. And a second adjustable capacitor 1042 connected across the sides of the second slot 104.
  • the first adjustable capacitor 1022 and the second adjustable capacitor 1042 can change the capacitance between the two pins of the first adjustable capacitor 1022.
  • the first slot 102 is used by the first adjustable capacitor 1022.
  • the upper and lower sides are connected, that is, the two pins of the first adjustable capacitor 1022 are soldered to the upper and lower sides of the first slot 102; the upper and lower sides of the second slot 104 are connected by the second adjustable capacitor 1042. That is, the two pins of the second adjustable capacitor 1042 are soldered to the upper and lower sides of the second slot 104.
  • the coupling capacitance between the first slot 102 of the antenna and the upper and lower sides of the second slot 104 may vary with the capacitance value of the first adjustable capacitor 1022 / the second adjustable capacitor 1042.
  • the equivalent length of the antenna can also vary with the change in capacitance. That is to say, when the antenna needs to be tuned, only the capacitance value of the first tunable capacitor 1022 / the second tunable capacitor 1042 needs to be adjusted, so that the equivalent length of the antenna can be adjusted, that is, the resonant frequency of the antenna. The points will also shift accordingly.
  • the radiation pattern of the entire antenna system can be seen as the superposition of the radiation patterns of the two slot antennas (slotted antennas) in the far field region, the small movement of the resonant frequency of each slot antenna will necessarily result in the entire antenna.
  • the metal plate 10 is further provided with a feeding point 106, and the feeding point 106 is located on the side of the first slot 102 or the second slot 104.
  • the feed point 106 is disposed on the lower side of the second slot 104. In other embodiments, the feed point may also be disposed on the upper side of the second slot 104 or on the upper side/lower side of the first slot 102.
  • the first slot 102 is the same length as the second slot 104.
  • the formation of the first slot 102 and the second slot 104 may be as follows in a complete rectangular metal plate.
  • the slotted setting position is formed by cutting.
  • the first slot 102 has a length of 8-10 mm and a width of 1-2 mm from the first short side 108 of the metal plate 10 (for example, the upper edge of the metal plate shown in FIG. 2) ) 4-5mm.
  • the second slot 104 has a length of 8-10 mm and a width of 1-2 mm, parallel to the first slot 102, and is spaced from the first slot in the direction of extension of the long side of the metal plate 10.
  • a slot is 1.3-2.5 mm closer to the first short side 108 than the first slot 102.
  • the first adjustable capacitor 1022 is 2.1-3.2 mm from the opening of the first slot 102, and the adjustment range is 0.5 PF-1.5 PF.
  • the second adjustable capacitor 1042 is 2.3-3.3 mm away from the opening of the second slot 104, and the adjustment range is 0.5 PF-1.5 PF.
  • the adjustment range of the capacitance values of the first adjustable capacitor 1022 and the second adjustable capacitor 1042 is determined by an existing manufacturing process of the adjustable capacitor. In other embodiments, It is also possible to select adjustable capacitors with other capacitance value adjustment ranges.
  • the adjustment of the capacitance values of the first tunable capacitor 1022 and the second tunable capacitor 1042 can achieve a change in the radiation pattern of the antenna.
  • the difference between the capacitance values of the first tunable capacitor 1022 and the second tunable capacitor 1042 is the key to affecting the change of the antenna pattern.
  • the difference between the capacitance values of the first tunable capacitor 1022 and the second tunable capacitor 1042 is 3 PF
  • the pattern of the antenna is directed to the side; when the capacitance difference between the first tunable capacitor 1022 and the second tunable capacitor 1042 When it is 0PF, the antenna's pattern is pointed obliquely downward. As shown in FIG. 3, FIG.
  • the antenna pattern The maximum gain direction can be varied from obliquely downward to side to achieve antenna pattern reconstruction.
  • the terminal antenna cannot effectively receive the external signal. This makes the antenna's radiation efficiency low.
  • the maximum gain direction of the antenna pattern is changeable according to the adjustment of the capacitance values of the first adjustable capacitor 1022 and the second ground adjusting capacitor 1042, when the external environment of the terminal changes, Adjust the direction of the maximum gain direction of the antenna pattern accordingly, and receive the external signal to the maximum extent to ensure that the terminal can ensure good communication under any circumstances.
  • the terminal detects the strongest direction of the external signal through the sensor, and combines the feedback adjustment mechanism, when the maximum gain direction of the current antenna pattern is inconsistent with the strongest direction of the external signal, for the first adjustable capacitor 1022 and the second
  • the capacitance of the modulation capacitor 1042 is adjusted such that the maximum gain direction of the antenna pattern is consistent with the strongest direction of the current external signal.
  • the maximum gain direction of the antenna pattern can be adjusted from the oblique direction.
  • the adjustment below to the side changes can effectively affect the radiation performance of the antenna when the handheld device is small and small, ensuring good head performance of the antenna.
  • the feeding point 106 is located on a side of the second slot 104 adjacent to the first slot 102 and is less than 5 mm from the second adjustable capacitor 1042. As shown in FIG. 1, the feed point 106 is located on the lower side of the second slot 104, and the lower side is closer to the first slot 102 with respect to the upper side (the first slot according to the orientation shown in FIG. 102 is located on the lower side of the second slot 102).
  • the metal plate 10 is a metal layer in the PCB board 20.
  • the metal plate 10 is a connected metal plate on the printed circuit board or a metal layer above the PCB board 20, which is an integral part of the PCB board 20.
  • a terminal is also proposed. .
  • the terminal 100 includes a PCB board 20 and a metal back cover 30, and the PCB board 20 is a PCB board as before. That is to say, the outer casing of the terminal 100 is made of a metal material and is a design of an all-metal casing.
  • the terminal 100 further includes a metal back cover 30.
  • the metal back cover includes a first metal portion 302 and a second metal portion 304.
  • the first metal portion 302 and the second metal portion 304 are disposed between
  • the slit 306 is filled with an insulating material.
  • the projection of the slit 306 on the plane of the PCB 20 is parallel to the first slot 102 and the second slot 104, and the projection is located at the first slot 102 and the second slot. Between 104.
  • the PCB board 20 is connected to the metal back cover 30 through the spring ground, so that the metal plate 10 and the first metal portion 302 on the PCB board 20 form a complete radiator, and the antenna is added with respect to the radiator of the common antenna.
  • the radiation area and volume increase the radiation efficiency of the antenna.
  • the antenna system is provided with two slotted antennas through two slots provided on both sides of the rectangular metal plate, thereby improving the bandwidth of the antenna radiation and improving the frequency bandwidth range that can be covered. More extensive.
  • the equivalent antenna length and the resonance frequency of the two slotted antennas in the antenna system are changed, thereby achieving two openings.
  • the reconstruction of the pattern of the antenna system superimposed by the pattern of the slot antenna that is, the adjustment of the maximum gain direction of the antenna pattern by adjusting the capacitance value of the adjustable capacitor. Therefore, when the external environment of the terminal changes, the maximum gain direction of the antenna pattern can be adjusted accordingly, ensuring that the natural disaster can achieve the most efficient signal receiving efficiency in any environment, and ensuring the user is good in any environment.
  • the call experience enhances the user experience.
  • a part of the metal back cover of the terminal is also used as a radiator of the antenna, which increases the area and volume of the antenna radiator, and improves the radiation efficiency of the antenna radiation.

Landscapes

  • Support Of Aerials (AREA)
  • Waveguide Aerials (AREA)

Abstract

本发明实施例公开了一种天线，所述天线为长方形的金属板，所述金属板上设置有垂直于所述金属板的长边且贯穿所述金属板的第一开槽和第二开槽，且所述第一开槽的开口和所述第二开槽的开口分别位于所述金属板的相向两侧的长边上，所述金属板上还设置有跨所述第一开槽两侧边连接的第一可调电容和跨所述第二开槽两侧边连接的第二可调电容，所述金属板上还设置有馈电点，所述馈电点位于所述第一开槽或第二开槽的侧边上。此外，本发明实施例还公开了一种终端。采用本发明，可实现对天线方向图的重构，提高天线对外部信号接收的稳定性。

Description

一种天线
本申请要求于2016年03月31日提交中国专利局，申请号为201610200205.3、发明名称为“一种天线”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及终端天线领域，尤其涉及一种天线及一种终端。
背景技术
传统技术中，随着用户对移动终端外观和体验的要求不断提高，手机越来越多地采用金属外壳，但是，在手机使用金属材料外壳时，也会对天线的辐射性能造成较大的影响(因为后盖和边框的环境，会在很大程度上减小天线辐射的净空，影响天线辐射体的性能)。随着4G网络等网络的普遍覆盖，手机用户体验越来越多的依赖高频天线，也就是说，保证用户体验需要在使用金属外壳的同时提高手机天线的辐射能力和带宽，这就需要在设计天线的时候，将金属边框或金属被盖作为终端天线的一部分。在现有的金属外壳手机的天线设计中，天线不能进行调谐或者在调谐的过程中，不能实现方向图的可调谐，这就导致了终端天线无法有效的接受各个方向的外部信号，即现有技术中使用金属外壳的手机的天线设计存在对外部信号接收的稳定性不足的问题。
发明内容
基于此，为解决传统技术中基于金属外壳的终端天线因为无法有效接收外部各个方向的辐射信号而存在的对外部信号接收的稳定性不足的技术问题，在一个实施例中，特提出了一种天线。
一种天线，所述天线为长方形的金属板，所述金属板上设置有垂直于所述金属板的长边且贯穿所述金属板的第一开槽和第二开槽，且所述第一开槽的开口和所述第二开槽的开口分别位于所述金属板的相向两侧的长边上，所述金属板上还设置有跨所述第一开槽两侧边连接的第一可调电容和跨所述第二开槽 两侧边连接的第二可调电容，所述金属板上还设置有馈电点，所述馈电点位于所述第一开槽或第二开槽的侧边上。
可选的，在其中一个实施例中，所述第一开槽与所述第二开槽的长度相同。
可选的，在其中一个实施例中，所述第一开槽的长度为8-10mm，宽度1-2mm，距离所述金属板的第一短边4-5mm。
可选的，在其中一个实施例中，所述第二开槽的长度为8-10mm，宽度1-2mm，与所述第一开槽平行，且在所述金属板的长边的延展方向上距离所述第一开槽1.3-2.5mm，比所述第一开槽靠近所述第一短边。
可选的，在其中一个实施例中，所述第一可调电容距离所述第一开槽的开口2.1-3.2mm，调节范围为0.5PF-1.5PF。
可选的，在其中一个实施例中，所述第二可调电容距离所述第二开槽的开口2.3-3.3mm，调节范围为0.5PF-1.5PF。
可选的，在其中一个实施例中，所述馈电点位于所述第二开槽的靠近所述第一开槽的一侧侧边上，且与所述第二可调电容距离小于5mm。
可选的，在其中一个实施例中，所述金属板为PCB板中的金属层。
此外，为解决传统技术中基于金属外壳的终端天线因为无法有效接收外部各个方向的辐射信号而存在的对外部信号接收的稳定性不足的技术问题，在一个实施例中，还提出了一种终端。
一种终端，所述终端包括PCB板和金属后盖，所述PCB板为权8所述的PCB板。
可选的，所述终端还包括金属后盖，所述金属后盖包括第一金属部和第二金属部，所述第一金属部和第二金属部之间设置有缝隙，所述缝隙中填充有绝缘材料，所述缝隙在所述PCB板所在平面上的投影平行于所述第一开槽和第二开槽，且在所述投影位于所述第一开槽和第二开槽之间。
实施本发明实施例，将具有如下有益效果：
采用了上述天线和终端之后，通过设置在长方形的金属板两侧的两个开槽，使得天线系统具备有两个开槽天线，提高了天线辐射的带宽得到了提高， 可覆盖的频率带宽范围更广。
进一步地，通过调节分别设置在金属板两侧开槽的两个可调电容的电容值，改变天线系统中的两个开槽天线的等效天线长度和谐振频点，从而实现由两个开槽天线的方向图叠加的天线系统的方向图的重构，即通过对可调电容的电容值的调节实现对天线方向图的最大增益方向的调整。从而使得在终端的外部环境发生变化时，天线方向图的最大增益方向也能相应地进行调节，保证天灾在任何环境下都能实现最大效率的信号接收效率，保证了用户在任意环境下的良好的通话体验，提升了用户体验。
此外，在采用本发明实施例所公开的天线的终端中，将终端的金属后盖的一部分也作为天线的辐射体，增加了天线辐射体的面积和体积，提高了天线辐射的辐射效率。
附图说明
为了更清楚地说明本发明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发明的一些实施例，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获得其他的附图。
其中：
图1为一个实施例中一种天线的结构示意图；
图2为一个实施例中采用前述天线系统的工作模式对应S11参数(回波损耗)示意图；
图3为一个实施例中前述天线系统的方向图；
图4为一个实施例中一种采用前述天线的终端结构示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明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发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，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，都属于本发明保护的范围。
基于此，为解决传统技术中基于金属外壳的终端天线因为无法有效接收外部各个方向的辐射信号而存在的对外部信号接收的稳定性不足的技术问题，在一个实施例中，特提出了一种天线。该天线适用于全金属外壳设计，即终端的背盖为金属材质，终端的边框结构也为金属材质。如图1所示，该天线为长方形的版型结构，且其材质为金属材质。在本实施例中，该天线为终端(例如智能手机、平板电脑等)的天线，该天线可以是终端背盖的一部分，也可以是终端的PCB版的金属层。
具体的，在一个实施例中，如图1所示，上述天线为长方形的版型结构10，其材质为金属材质(即上述天线为长方形金属板10)。在金属板上设置有垂直于金属板10的长边且贯穿金属板的第一开槽102和第二开槽104，且第一开槽102的开口1021和第二开槽104的开口1041分别位于金属板10的相向两侧的长边上。
也就是说，如图1中，长方形的金属材质的天线有两个长边，参考图1中的方位，分别为左长边和右长边。需要说明的是，此处的“左”和“右”的方位词限定仅用于区分的两个不同的长边，并没有对金属板10的长边的实际命名进行限定。金属板10的左长边上设置有开口1021位于左长边的第一开槽102，第一开槽102为直线型槽，其延展方向与左长边垂直，且第一开槽102贯穿了金属板10。同样的，金属板10的右长边上设置有开口1041位于右长边的第二开槽104，第二开槽104为直线型槽，其延展方向与右长边垂直，且第二开槽104贯穿了金属板10。
也就是说，在上述天线中，第一开槽102和第二开槽104可以看做是两个缝隙天线或开槽天线，相对于传统的只开一条缝隙的天线设计来讲，可以使得天线系统多出一个天线，即多出一个天线，在很大程度上提高了天线的带宽，使得天线能覆盖的带宽范围更广。
如图2所示，在图2中展示了上述天线系统在一种工作模式下的S11参数(回波损耗)，从图中可以看出，上述天线系统可以实现很好的低频特性，具体的低频区域为791～960MHz区域。
金属板10上还设置有跨第一开槽102两侧边连接的第一可调电容1022 和跨第二开槽104两侧边连接的第二可调电容1042。在本实施例中，第一可调电容1022和第二可调电容1042可以改变其自身两个引脚之间的电容值，具体实现中，用第一可调电容1022将第一开槽102的上下侧边连接，即将第一可调电容1022的两个引脚焊接在第一开槽102的上下两个侧边；用第二可调电容1042将第二开槽104的上下侧边连接，即将第二可调电容1042的两个引脚焊接在第二开槽104的上下两个侧边。也就是说，天线的第一开槽102和第二开槽104的上下侧边之间的耦合电容可以随着设置的第一可调电容1022/第二可调电容1042的电容值的变化而变化，天线的等效长度也可以随着电容值的变化而变化。也就是说，在需要对天线进行调谐时，只需要对第一可调电容1022/第二可调电容1042的电容值进行调节，从而实现天线的等效长度的可调节，即天线的谐振频点也会随之发生偏移。因为整个天线系统的辐射方向图可以看成是两个缝隙天线(开槽天线)的辐射方向图在远场区的叠加，所以每个缝隙天线的谐振频点的微小移动，必定会导致整个天线系统的方向图叠加时每一个缝隙天线的方向图所占的权重的变化，从而实现天线的辐射方向会随着第一可调电容1022和第二可调电筒1042的电容值的变化而变化。
进一步地，在本实施例中，金属板10上还设置有馈电点106，馈电点106位于第一开槽102或第二开槽104的侧边上。
如图1所示的实施例中，馈电点106设置在第二开槽104的下侧边。在其他实施例中，还可以将馈电点设置在第二开槽104的上侧边，或者设置在第一开槽102的上侧边/下侧边。
优选的，在一个实施例中，第一开槽102与第二开槽104的长度相同。
在一个实施例中，在如前所述的作为天线的金属板10的生产过程中，上述第一开槽102和第二开槽104的形成可以是在完整的长方形金属板的按照预设的开槽设置位置切割形成的。
优选的，在一个实施例中，第一开槽102的长度为8-10mm，宽度1-2mm，距离所述金属板10的第一短边108(例如图2所示的金属板的上边缘)4-5mm。
优选的，在一个实施例中，第二开槽104的长度为8-10mm，宽度1-2mm，与第一开槽102平行，且在金属板10的长边的延展方向上距离所述第一开槽1.3-2.5mm，比第一开槽102靠近所述第一短边108。
优选的，在一个实施例中，第一可调电容1022距离所述第一开槽102的开口2.1-3.2mm，调节范围为0.5PF-1.5PF。
优选的，在一个实施例中，所述第二可调电容1042距离所述第二开槽104的开口2.3-3.3mm，调节范围为0.5PF-1.5PF。
需要说明的是，在本实施例中，上述第一可调电容1022和第二可调电容1042的电容值的调节范围是由可调电容的现有制作工艺决定的，在其他实施例中，也可以选择其他电容值调节范围的可调电容。
在本实施例中，第一可调电容1022和第二可调电容1042的电容值的调节，可实现对天线的辐射方向图的变化。具体的，第一可调电容1022与第二可调电容1042二者的电容值的差值是影响天线方向图指向变化的关键。在第一可调电容1022和第二可调电容1042的电容值差值为3PF时，天线的方向图指向为侧面；当第一可调电容1022和第二可调电容1042的电容值差值为0PF时，天线的方向图指向为斜下方。如图3所示，图3展示了第一可调电容1022和第二可调电容1042的电容值差值从0PF到3PF时的方向图的变化，从图中可以看出，天线方向图的最大增益方向可以在斜下方到侧面之间变化，从而实现天线的方向图重构。
进一步地，因为移动终端所处的外界环境不断变化以及外界环境的复杂，若终端的天线的最大增益方向不能有效地随着外部环境的变化而变化，就会使得终端天线不能有效的接收外部信号，使得天线的辐射效率低下。在本实施例中，因为天线方向图的最大增益方向是可随着第一可调电容1022和第二地调电容1042的电容值的调节而改变的，这样就可以在终端外部环境变化时，相应地调整天线方向图的最大增益方向的指向，最大程度的接收外部信号，确保终端在任意环境下都能保证良好的通信效果。
具体的，终端通过传感器检测外部信号的最强方向，结合反馈调节机制，在当前天线的方向图的最大增益方向与外部信号的最强方向不一致时，针对第一可调电容1022和第二可调电容1042的电容值进行调节，以使天线方向图的最大增益方向与当前外部信号的最强方向保持一致性。
相对于传统技术中天线方向图不可重构的天线设计方案，上述天线在调整天线方向图的最大增益方向时，因为可以调整天线方向图的最大增益方向从斜 下方调整到侧面之间变化，可以有效的较小手持设备时，头和手对天线的辐射性能的影响，保证了天线良好的头手特性。
优选的，在一个实施例中，馈电点106位于所述第二开槽104的靠近第一开槽102的一侧侧边上，且与所述第二可调电容1042距离小于5mm。如图1所示，馈电点106位于第二开槽104的下侧边，该下侧边相对于上侧边更靠近第一开槽102(根据图1所示的方位，第一开槽102位于第二开槽102的下侧)。
优选的，在一个实施例中，金属板10为PCB板20中的金属层。具体的，金属板10为PCB板((printed circuit board)之上的一个相连的一个金属板或者是PCB板20之上的一个金属层，是PCB板20的一个组成部分。
此外，为解决传统技术中基于金属外壳的终端天线因为无法有效接收外部各个方向的辐射信号而存在的对外部信号接收的稳定性不足的技术问题，在一个实施例中，还提出了一种终端。
如图4所示，该终端100包括PCB板20和金属后盖30，PCB板20为如前的PCB板。也就是说，终端100的外壳是金属材质的，是全金属外壳的设计。
优选的，在一个实施例中，上述终端100还包括金属后盖30，金属后盖包括第一金属部302和第二金属部304，第一金属部302和第二金属部304之间设置有缝隙306，缝隙306中填充有绝缘材料，缝隙306在PCB板20所在平面上的投影平行于第一开槽102和第二开槽104，且在投影位于第一开槽102和第二开槽104之间。
上述PCB板20通过弹片接地与金属后盖30相连，从而使得PCB板20上的金属板10和第一金属部302形成一个完整的辐射体，相对于普通天线的辐射体来讲，增加了天线的辐射体面积和体积，提高了天线的辐射效率。
实施本发明实施例，将具有如下有益效果：
采用了上述天线和终端之后，通过设置在长方形的金属板两侧的两个开槽，使得天线系统具备有两个开槽天线，提高了天线辐射的带宽得到了提高，可覆盖的频率带宽范围更广。
进一步地，通过调节分别设置在金属板两侧开槽的两个可调电容的电容值，改变天线系统中的两个开槽天线的等效天线长度和谐振频点，从而实现由两个开槽天线的方向图叠加的天线系统的方向图的重构，即通过对可调电容的电容值的调节实现对天线方向图的最大增益方向的调整。从而使得在终端的外部环境发生变化时，天线方向图的最大增益方向也能相应地进行调节，保证天灾在任何环境下都能实现最大效率的信号接收效率，保证了用户在任意环境下的良好的通话体验，提升了用户体验。
此外，在采用本发明实施例所公开的天线的终端中，将终端的金属后盖的一部分也作为天线的辐射体，增加了天线辐射体的面积和体积，提高了天线辐射的辐射效率。
以上所揭露的仅为本发明较佳实施例而已，当然不能以此来限定本发明之权利范围，因此依本发明权利要求所作的等同变化，仍属本发明所涵盖的范围。

Claims (10)

  1. 一种天线，其特征在于，所述天线为长方形的金属板，所述金属板上设置有垂直于所述金属板的长边且贯穿所述金属板的第一开槽和第二开槽，且所述第一开槽的开口和所述第二开槽的开口分别位于所述金属板的相向两侧的长边上，所述金属板上还设置有跨所述第一开槽两侧边连接的第一可调电容和跨所述第二开槽两侧边连接的第二可调电容，所述金属板上还设置有馈电点，所述馈电点位于所述第一开槽或第二开槽的侧边上。
  2. 根据权利要求1所述的天线，其特征在于，所述第一开槽与所述第二开槽的长度相同。
  3. 根据权利要求1或2所述的天线，其特征在于，所述第一开槽的长度为8-10mm，宽度1-2mm，距离所述金属板的第一短边4-5mm。
  4. 根据权利要求3所述的天线，其特征在于，所述第二开槽的长度为8-10mm，宽度1-2mm，与所述第一开槽平行，且在所述金属板的长边的延展方向上距离所述第一开槽1.3-2.5mm，比所述第一开槽靠近所述第一短边。
  5. 根据权利要求4所述的天线，其特征在于，所述第一可调电容距离所述第一开槽的开口2.1-3.2mm，调节范围为0.5PF-1.5PF。
  6. 根据权利要求4所述的天线，其特征在于，所述第二可调电容距离所述第二开槽的开口2.3-3.3mm，调节范围为0.5PF-1.5PF。
  7. 根据权利要求4所述的天线，其特征在于，所述馈电点位于所述第二开槽的靠近所述第一开槽的一侧侧边上，且与所述第二可调电容距离小于5mm。
  8. 根据权利要求1至7任一所述的天线，其特征在于，所述金属板为PCB板中的金属层。
  9. 一种终端，所述终端包括PCB板和金属后盖，所述PCB板为权8所述的PCB板。
  10. 根据权利要求9所述的终端，其特征在于，所述终端还包括金属后盖，所述金属后盖包括第一金属部和第二金属部，所述第一金属部和第二金属部之间设置有缝隙，所述缝隙中填充有绝缘材料，所述缝隙在所述PCB板所在平 面上的投影平行于所述第一开槽和第二开槽，且在所述投影位于所述第一开槽和第二开槽之间。
PCT/CN2016/084086 2016-03-31 2016-05-31 一种天线 Ceased WO2017166422A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201610200205.3A CN107293844B (zh) 2016-03-31 2016-03-31 一种天线
CN201610200205.3 2016-03-31

Publications (1)

Publication Number Publication Date
WO2017166422A1 true WO2017166422A1 (zh) 2017-10-05

Family

ID=59962531

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2016/084086 Ceased WO2017166422A1 (zh) 2016-03-31 2016-05-31 一种天线

Country Status (2)

Country Link
CN (1) CN107293844B (zh)
WO (1) WO2017166422A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108565543A (zh) * 2018-01-18 2018-09-21 深圳市信维通信股份有限公司 Mimo天线结构及具有该mimo天线结构的手持设备

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111031156A (zh) * 2019-12-12 2020-04-17 惠州Tcl移动通信有限公司 一种移动终端
CN111781250B (zh) * 2020-06-30 2023-07-07 维沃移动通信有限公司 电子设备及天线检测方法
TWI750887B (zh) * 2020-11-06 2021-12-21 和碩聯合科技股份有限公司 天線模組
EP4195404B1 (en) 2021-12-10 2025-07-16 Robert Bosch GmbH Slot antenna in a multi-layered printed circuit board

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2879449Y (zh) * 2006-03-23 2007-03-14 广达电脑股份有限公司 平板天线
CN101243583A (zh) * 2005-08-24 2008-08-13 皇家飞利浦电子股份有限公司 包括天线用于交换射频信号的装置
US20140062815A1 (en) * 2012-08-29 2014-03-06 Htc Corporation Mobile device and antenna structure therein
CN104821428A (zh) * 2015-04-28 2015-08-05 瑞声精密制造科技(常州)有限公司 天线装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6043786A (en) * 1997-05-09 2000-03-28 Motorola, Inc. Multi-band slot antenna structure and method
WO2001052353A2 (en) * 2000-01-12 2001-07-19 Emag Technologies L.L.C. Low cost compact omni-directional printed antenna
CN202352828U (zh) * 2011-11-01 2012-07-25 厦门市奥佳信息科技有限公司 工作在uhf全频段的平面单极内置天线
KR101347960B1 (ko) * 2012-03-20 2014-01-10 한양대학교 산학협력단 슬롯 안테나
US10003121B2 (en) * 2012-08-29 2018-06-19 Htc Corporation Mobile device and antenna structure
TWI552442B (zh) * 2014-07-16 2016-10-01 啟碁科技股份有限公司 雙頻天線
CN204118254U (zh) * 2014-09-16 2015-01-21 李文洁 一种利用共振式馈电结构的槽缝天线
CN104319477B (zh) * 2014-09-18 2018-02-27 联想(北京)有限公司 一种天线及电子设备
CN205081233U (zh) * 2015-10-22 2016-03-09 广东欧珀移动通信有限公司 一种全金属后盖的双馈电天线结构

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101243583A (zh) * 2005-08-24 2008-08-13 皇家飞利浦电子股份有限公司 包括天线用于交换射频信号的装置
CN2879449Y (zh) * 2006-03-23 2007-03-14 广达电脑股份有限公司 平板天线
US20140062815A1 (en) * 2012-08-29 2014-03-06 Htc Corporation Mobile device and antenna structure therein
CN104821428A (zh) * 2015-04-28 2015-08-05 瑞声精密制造科技(常州)有限公司 天线装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108565543A (zh) * 2018-01-18 2018-09-21 深圳市信维通信股份有限公司 Mimo天线结构及具有该mimo天线结构的手持设备
CN108565543B (zh) * 2018-01-18 2023-10-17 深圳市信维通信股份有限公司 Mimo天线结构及具有该mimo天线结构的手持设备

Also Published As

Publication number Publication date
CN107293844B (zh) 2020-12-22
CN107293844A (zh) 2017-10-24

Similar Documents

Publication Publication Date Title
US6593897B1 (en) Wireless GPS apparatus with integral antenna device
US6268831B1 (en) Inverted-f antennas with multiple planar radiating elements and wireless communicators incorporating same
KR100548057B1 (ko) 트리오 랜드구조를 갖는 표면실장 안테나 장치
WO2017166422A1 (zh) 一种天线
US20050248487A1 (en) Antenna, dielectric substrate for antenna, radio communication card
US20030038750A1 (en) Indented planar inverted F-type antenna
CA2670754A1 (en) Communication device with a wideband antenna
JP2014150526A (ja) アンテナアセンブリ及び該アンテナアセンブリを備える通信装置
TWI569513B (zh) 天線模組
CN209232942U (zh) 一种矩形环型宽频带双频天线
US11962058B1 (en) Circular filter assembly
WO2019227651A1 (zh) 便携式通信终端及其pifa天线
KR200470080Y1 (ko) 익스텐디드 접지부를 구비한 차량용 세라믹 원편파 패치 안테나
WO2017185493A1 (zh) 天线装置和移动终端
KR101025970B1 (ko) 휴대 단말용 안테나 및 이를 구비한 휴대용 단말
CN108232441B (zh) 一种天线单元及阵列天线
CN206490168U (zh) 一种多频折弯4g手机天线
KR20050098910A (ko) 광대역 콤비네이션 민더라인 및 패치 안테나
CN109390672A (zh) 一种基于液态金属汞的重力场调控全向圆极化天线
CN211182514U (zh) 一种应用于5g移动通信的小型化宽频带mimo天线
CN107293840A (zh) 终端背盖
CN207868398U (zh) 双频线极化天线
CN222282228U (zh) 天线及电子产品
WO2018058300A1 (zh) 终端壳体及终端
CN106505314B (zh) 一种多频折弯4g手机天线

Legal Events

Date Code Title Description
NENP Non-entry into the national phase

Ref country code: DE

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16896196

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 16896196

Country of ref document: EP

Kind code of ref document: A1