WO2017162136A1 - 天线装置、金属外壳及移动终端 - Google Patents

天线装置、金属外壳及移动终端 Download PDF

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Publication number
WO2017162136A1
WO2017162136A1 PCT/CN2017/077476 CN2017077476W WO2017162136A1 WO 2017162136 A1 WO2017162136 A1 WO 2017162136A1 CN 2017077476 W CN2017077476 W CN 2017077476W WO 2017162136 A1 WO2017162136 A1 WO 2017162136A1
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Prior art keywords
long side
radiating portion
insulating tape
metal casing
antenna device
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PCT/CN2017/077476
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English (en)
French (fr)
Inventor
胡莎莎
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Publication of WO2017162136A1 publication Critical patent/WO2017162136A1/zh
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    • 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
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • 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
    • H01Q23/00—Antennas with active circuits or circuit elements integrated within them or attached to them

Definitions

  • the present invention relates to the field of antenna technologies, and in particular, to an antenna device and a mobile terminal to which the antenna device is applied.
  • metal is a signal shielding material.
  • the design of the housing is usually combined with metal and non-metal, so that the antenna structure is located in the non-metal area, and the non-metal area is usually disposed at both ends of the mobile terminal. Located outside the shield display area, the non-metal area is internally provided with a circuit board on which electronic components and signal transceiver modules are disposed.
  • the antenna of the mobile terminal is usually disposed in a non-metallic area to transmit and receive signals through the non-metal area.
  • the design of the radiator of the antenna is limited, resulting in a low radiation efficiency of the antenna.
  • the technical problem to be solved by the present invention is to provide an antenna device in which the radiator of the antenna device is a metal casing of the mobile terminal, so that the radiation efficiency of the antenna device is improved.
  • the present invention also provides a mobile terminal including the antenna device.
  • the present invention provides an antenna apparatus including: a radio frequency transceiver circuit, a matching circuit, and a radiator, the matching circuit being electrically connected between the radio frequency transceiver circuit and the radiator, the radiator being a mobile a metal casing of the terminal, the metal casing including a first radiating portion, a second radiating portion, a first insulating tape, and a first connecting portion, wherein the first insulating tape and the first connecting portion are located in the first radiating portion Between the first radiating portion and the second radiating portion, the first insulating portion is spaced apart by the first insulating strip, and the first connecting portion is electrically connected to the first radiating portion The first connecting segment is electrically connected to the matching circuit between the second radiating portion.
  • the present invention provides a metal casing for use in a mobile terminal, the metal casing and The radio frequency transceiver circuit in the mobile terminal is electrically connected and serves as a radiator of the antenna device, and the metal casing includes a first radiating portion, a second radiating portion, a first insulating tape and a first connecting portion, the first insulating tape and the The first connecting portion is located between the first radiating portion and the second radiating portion, and the first radiating portion and the second radiating portion are separated by the first insulating strip, the first a connecting segment electrically connected between the first radiating portion and the second radiating portion, wherein the first connecting segment is connected to the radio frequency transceiver circuit
  • the present invention provides a mobile terminal comprising the aforementioned metal casing.
  • the present invention has the following beneficial effects:
  • the radiator of the antenna device in the embodiment of the present invention is disposed on the metal casing of the mobile terminal, and the metal casing is partitioned into at least two radiating portions (first radiation) through the insulating tape (the first insulating tape and the second insulating tape) a second portion, a second radiating portion, and a third radiating portion, wherein the at least two radiating portions are electrically connected by the connecting portion (the first connecting portion and the second connecting portion), and are electrically connected to the matching circuit of the antenna device through the connecting portion, Feeding.
  • the radiator of the antenna device provided by the invention utilizes the structure of the metal casing of the mobile terminal, has a large radiation area, and does not need to additionally design an antenna radiator, which not only improves the radiation efficiency of the antenna device, but also simplifies the overall structure of the mobile terminal. It is beneficial to reduce the cost of mobile terminals.
  • FIG. 1 is a schematic structural diagram of a radiator of an antenna device according to an embodiment of the present invention.
  • FIG. 2 is a schematic structural diagram of a radiator of an antenna device according to another embodiment of the present invention.
  • FIG. 3 is a schematic diagram of current distribution of a radiator of an antenna device according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram showing the overall structure of a radiator of an antenna device, a main board in a mobile terminal, and a matching circuit and a radio frequency transceiver circuit disposed on the main board.
  • the invention relates to an antenna device, which is applied inside a mobile terminal, and the mobile terminal can be a smart phone or a tablet computer or the like.
  • the mobile terminal includes a display screen and a metal casing.
  • the metal casing is usually used as a back cover of the mobile terminal, and houses the battery and the main board inside.
  • the top and/or bottom of the display screen of the mobile terminal is usually provided with a non-display area, and electronic components such as a camera module, an earpiece, a Bluetooth module, a fingerprint recognition module, and the like are disposed inside the non-display area.
  • the motherboard of the mobile terminal is also set in the non-display area.
  • the antenna device provided by the present invention includes a radio frequency transceiver circuit 10, a matching circuit 20, and a radiator 30.
  • the radio frequency transceiver circuit 10 and the matching circuit 20 are disposed on the main board 40 in the mobile terminal. Or set on a circuit board connected to the main board 40.
  • the matching circuit 20 is electrically connected between the radio frequency transceiver circuit 10 and the radiator 30 to implement a function of signal transceiving.
  • the radiator 30 is a metal casing 30 of the mobile terminal. That is, the present invention uses the metal casing 30 as a radiator of the antenna device, and the same component has two functions.
  • the metal casing 30 includes a first radiating portion 32, a second radiating portion 34, a first insulating strip 36 and a first connecting portion 38, the first insulating strip 36 and the The first connecting portion 38 is located between the first radiating portion 32 and the second radiating portion 34, and the first radiating portion 32 and the second radiating portion 34 pass between the first insulating strip 36
  • the first connecting section 38 is electrically connected between the first radiating portion 32 and the second radiating portion 34, and the first connecting portion 38 is electrically connected to the matching circuit 20.
  • the metal casing 30 is a one-piece metal sheet structure, and a slit is formed in the metal casing 30, and the metal casing 30 is partitioned by the slit to form the first radiating portion 32 and the second radiating portion 34.
  • An insulating material is filled in the slit to form a first insulating tape 36.
  • the material of the first insulating tape 36 is a non-signal shielding material, and the first insulating tape 36 can also serve as a clearance area on the signal transceiving path of other antennas inside the mobile terminal.
  • the first connecting portion 38 is a conductive material (which may be made of a metal material), and the first connecting portion 38 is electrically connected not only between the first radiating portion 32 and the second radiating portion 34 but also as a feeding point to the matching circuit 20 .
  • the first connecting section 38 can also serve as a return point for the antenna device, i.e., to achieve the grounding function of the antenna device radiator 30.
  • the first connecting portion 38 passes through the metal dome and the main board The matching circuit 20 on 40 is electrically connected.
  • the metal casing 30 includes a first long side L1 , a second long side L2 , and a pair of short sides S , which are oppositely disposed and connected.
  • the first insulating tape 36 extends from the first long side L1 toward the second long side L2, that is, the first insulating tape 36
  • the first connecting section 38 is formed between the first insulating strip 36 and the second long side L2 without extending to the second long side L2.
  • the first insulating strip 36 extends from the first long side L1 to the second long side L2, and the first connecting section 38 spans the first An insulating tape 36. That is, the first radiating portion 32 and the second radiating portion 34 are completely separated by the first insulating tape 36, and the first connecting portion 38 is a conductive sheet independent of the metal casing 30, and the first insulating tape 36 is formed first during the manufacturing process. Then, the first connecting section 38 is fabricated. The first connecting section 38 can be located at any position of the first insulating tape 36.
  • the metal casing 30 further includes a third radiating portion 35
  • the antenna device further includes a second insulating tape 37 and a second connecting portion 39
  • the second insulating tape 37 and the first Two connecting segments 39 are located between the second radiating portion 34 and the third radiating portion 35, and the second radiating portion 34 and the third radiating portion 35 are spaced apart by the second insulating tape 37
  • the second connecting section 39 is electrically connected between the second radiating portion 34 and the third radiating portion 35, and the second connecting portion 39 is electrically connected to the matching circuit 20.
  • the first insulating tape 36 extends from the first long side L1 toward the second long side L2, and a space is formed between the first insulating tape 36 and the second long side L2.
  • a first connecting section 38, the second insulating strip 37 extends from the second long side L2 toward the first long side L1, and the second insulating strip 37 forms a gap with the first long side L1
  • the second connecting section 39 is described below.
  • first insulating strip 36 and the second insulating strip 37 each extend the first long side L1 to the second long side L2, and the first connecting section 38 spans the The first insulating strip 36 is disposed, and the second connecting portion 39 spans the second insulating strip 37.
  • first radiating portion 32, the second radiating portion 34, the third radiating portion 35, the first connecting portion 38, and the second connecting portion 39 are all made of a metal material.
  • the materials of the first radiating portion 32, the second radiating portion 34, the third radiating portion 35, the first connecting portion 38, and the second connecting portion 39 may be the same or different.
  • first insulating tape 36 and the second insulating tape 37 are parallel to each other.
  • the radiator of the antenna device in the embodiment of the present invention is disposed on the metal casing of the mobile terminal, and the metal casing is partitioned into at least two radiating portions by the insulating tape (the first insulating tape 36 and the second insulating tape 37) a radiating portion 32, a second radiating portion 34 and a third radiating portion 35), at least two radiating portions are electrically connected by a connecting portion (the first connecting portion 38 and the second connecting portion 39), and through the connecting portion and the antenna
  • the matching circuit 20 of the device is electrically connected to perform feeding.
  • the radiator of the antenna device provided by the invention utilizes the structure of the metal casing of the mobile terminal, has a large radiation area, and does not need to additionally design an antenna radiator, which not only improves the radiation efficiency of the antenna device, but also simplifies the overall structure of the mobile terminal. It is beneficial to reduce the cost of mobile terminals.
  • FIG. 3 is a schematic diagram showing the current distribution of the radiator of the antenna device.
  • the first connecting section 38 is connected to the matching circuit to become a feeding point, such that the current direction on the first radiating portion 32 flows from the second long side L2 to the first long side L1, and the current direction on the second radiating portion 34 is From the first insulating tape 36 toward the direction perpendicular to the first insulating tape 36.

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Abstract

本发明公开了一种天线装置，包括射频收发电路、匹配电路及辐射体，所述匹配电路电连接在所述射频收发电路和所述辐射体之间。所述辐射体为移动终端的金属外壳，所述金属外壳包括第一辐射部、第二辐射部、第一绝缘带和第一连接段，所述第一绝缘带和所述第一连接段位于所述第一辐射部和所述第二辐射部之间，所述第一连接段电连接在所述第一辐射部和所述第二辐射部之间，所述第一连接段与所述匹配电路电连接。本发明还公开了一种金属外壳和移动终端。本发明之天线装置的辐射体为移动终端的金属壳体，使得所述天线装置的辐射效率提升。

Description

天线装置、金属外壳及移动终端 技术领域
本发明涉及天线技术领域，尤其涉及一种天线装置以及一种应用所述天线装置的移动终端。
背景技术
随着科技的发展及使用者对电子产品的信号要求越来越高，目前市面上的手机等具有天线的移动终端很多选用金属壳体，以保证使用强度的同时，满足质感，提升用户的体验感。众所周知，金属为信号屏蔽材料，为避免金属外壳信号屏蔽影响天线效率作用，通常设计壳体会采用金属与非金属结合，使天线结构位于非金属区，非金属区通常设置在移动终端的两端且位于屏蔽显示区之外，非金属区的内部设置电路板，电路板上设置电子元件及信号收发模块，移动终端的天线通常设置在非金属区范围内，以通过非金属区进行信号收发。传统的结构中，天线的辐射体的设计受到限制，导致天线的辐射效率较低。
发明内容
本发明所要解决的技术问题在于提供一种天线装置，天线装置的辐射体为移动终端的金属壳体，使得所述天线装置的辐射效率提升。
此外，本发明还提供一种包括所述天线装置的移动终端。
为了实现上述目的，本发明实施方式采用如下技术方案：
一方面，本发明提供一种天线装置，包括：包括射频收发电路、匹配电路及辐射体，所述匹配电路电连接在所述射频收发电路和所述辐射体之间，所述辐射体为移动终端的金属外壳，所述金属外壳包括第一辐射部、第二辐射部、第一绝缘带和第一连接段，所述第一绝缘带和所述第一连接段位于所述第一辐射部和所述第二辐射部之间，所述第一辐射部和所述第二辐射部之间通过所述第一绝缘带相间隔，所述第一连接段电连接在所述第一辐射部和所述第二辐射部之间，所述第一连接段与所述匹配电路电连接。
另一方面，本发明提供一种金属外壳，应用于移动终端，所述金属外壳与 移动终端内的射频收发电路电连接且作为天线装置的辐射体，所述金属外壳包括第一辐射部、第二辐射部、第一绝缘带和第一连接段，所述第一绝缘带和所述第一连接段位于所述第一辐射部和所述第二辐射部之间，所述第一辐射部和所述第二辐射部之间通过所述第一绝缘带相间隔，所述第一连接段电连接在所述第一辐射部和所述第二辐射部之间，所述第一连接段与所述射频收发电路连接
再一方面，本发明提供一种移动终端，包括前述金属外壳。
相较于现有技术，本发明具有以下有益效果：
在本发明实施例中的天线装置的辐射体设置在移动终端的金属外壳上，且通过绝缘带(第一绝缘带和第二绝缘带)将金属外壳分隔成至少两个辐射部(第一辐射部、第二辐射部和第三辐射部)，至少两个辐射部之间通过连接段(第一连接段和第二连接段)电连接，并且通过连接段与天线装置的匹配电路电连接，进行馈电。本发明提供的天线装置的辐射体的设计利用了移动终端金属外壳的结构，辐射面积大，且不需要再额外设计天线辐射体，不但提高了天线装置的辐射效率，而且使得移动终端整体结构简化，有利于降低移动终端的成本。
附图说明
为了更清楚地说明本发明的技术方案，下面将对实施方式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方式，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，还可以如这些附图获得其他的附图。
图1为本发明一种实施例提供的天线装置的辐射体的结构示意图。
图2为本发明另一种实施例提供的天线装置的辐射体的结构示意图。
图3为本发明一种实施例提供的天线装置的辐射体的电流分布示意图。
图4为本发明提供的天线装置之辐射体、移动终端中的主板及设置在主板上的匹配电路和射频收发电路的整体架构示意图。
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。
本发明涉及一种天线装置，应用在移动终端内部，所述移动终端可以为智能手机或平板电脑等。移动终端包括显示屏和金属外壳。金属外壳通常作为移动终端的后盖，其内部容纳电池及主板。移动终端的显示屏的顶部和/或底部通常设有非显示区域，在非显示区域的内部会设置电子元件，例如摄像头模组、听筒、蓝牙模块、指纹识别模块等等。移动终端的主板也设置在非显示区域。
请一并参阅图1和图2和图4，本发明提供的天线装置包括射频收发电路10、匹配电路20及辐射体30，射频收发电路10、匹配电路20设置在移动终端内的主板40上，或者设置在与主板40相连接的电路板上。所述匹配电路20电连接在所述射频收发电路10和所述辐射体30之间，以实现信号收发的功能。所述辐射体30为移动终端的金属外壳30，也就是说，本发明将金属外壳30作为天线装置的辐射体，同一个元件有两个功能。
请一并参阅图1和图2，所述金属外壳30包括第一辐射部32、第二辐射部34、第一绝缘带36和第一连接段38，所述第一绝缘带36和所述第一连接段38位于所述第一辐射部32和所述第二辐射部34之间，所述第一辐射部32和所述第二辐射部34之间通过所述第一绝缘带36相间隔，所述第一连接段38电连接在所述第一辐射部32和所述第二辐射部34之间，所述第一连接段38与所述匹配电路20电连接。
具体而言，金属外壳30为整片的金属板材结构，在金属外壳30上切割形成缝隙，通过缝隙将金属外壳30分隔形成第一辐射部32和第二辐射部34。在缝隙中填充绝缘材料以形成第一绝缘带36。第一绝缘带36的材料为非信号屏蔽材质，第一绝缘带36也可以作为移动终端内部其它天线的信号收发路径上的净空区。第一连接段38为导电材料(可以为金属材质)，第一连接段38不但电连接在第一辐射部32和第二辐射部34之间，还作为馈电点与匹配电路20电连接，第一连接段38也可以作为天线装置的回地点，即实现天线装置辐射体30的接地功能。一种实施方式中，第一连接段38通过金属弹片与主板 40上的匹配电路20电连接。
一种实施方式中，如图1所示，所述金属外壳30包括相对设置的第一长边L1、第二长边L2以及一对短边S，所述一对短边S相对设置且连接在所述第一长边L1和所述第二长边L2之间，所述第一绝缘带36从所述第一长边L1朝向所述第二长边L2延伸，即第一绝缘带36没有延伸到第二长边L2处，所述第一绝缘带36与所述第二长边L2之间形成所述第一连接段38。
另一种实施方式中，如图2所示，所述第一绝缘带36从所述第一长边L1延伸至所述第二长边L2，所述第一连接段38横跨所述第一绝缘带36。也就是说，第一辐射部32和第二辐射部34被第一绝缘带36完全分隔，第一连接段38为独立于金属外壳30的导电片，制造过程中，先形成第一绝缘带36，再制作第一连接段38。第一连接段38可以位于第一绝缘带36的任意位置处。
本发明另一实施方式中，所述金属外壳30还包括第三辐射部35，所述天线装置还包括第二绝缘带37和第二连接段39，所述第二绝缘带37和所述第二连接段39位于所述第二辐射部34和所述第三辐射部35之间，所述第二辐射部34和所述第三辐射部35之间通过所述第二绝缘带37相间隔，所述第二连接段39电连接在所述第二辐射部34和所述第三辐射部35之间，所述第二连接段39与所述匹配电路20电连接。
一种实施方式中，所述第一绝缘带36从所述第一长边L1朝向所述第二长边L2延伸，所述第一绝缘带36与所述第二长边L2之间形成所述第一连接段38，所述第二绝缘带37从所述第二长边L2朝向所述第一长边L1延伸，所述第二绝缘带37与所述第一长边L1之间形成所述第二连接段39。
另一种实施方式中，所述第一绝缘带36和所述第二绝缘带37均所述第一长边L1延伸至所述第二长边L2，所述第一连接段38横跨所述第一绝缘带36，所述第二连接段39横跨所述第二绝缘带37。
进一步而言，所述第一辐射部32、所述第二辐射部34、所述第三辐射部35、所述第一连接段38及所述第二连接段39的均为金属材质。所述第一辐射部32、所述第二辐射部34、所述第三辐射部35、所述第一连接段38及所述第二连接段39的材质可以相同，也可以不同。
一种实施方式中，所述第一绝缘带36与所述第二绝缘带37彼此平行。
在本发明实施例中的天线装置的辐射体设置在移动终端的金属外壳上，且通过绝缘带(第一绝缘带36和第二绝缘带37)将金属外壳分隔成至少两个辐射部(第一辐射部32、第二辐射部34和第三辐射部35)，至少两个辐射部之间通过连接段(第一连接段38和第二连接段39)电连接，并且通过连接段与天线装置的匹配电路20电连接，进行馈电。本发明提供的天线装置的辐射体的设计利用了移动终端金属外壳的结构，辐射面积大，且不需要再额外设计天线辐射体，不但提高了天线装置的辐射效率，而且使得移动终端整体结构简化，有利于降低移动终端的成本。
请参阅图3，图3所示为天线装置辐射体的电流分布示意图。图中，第一连接段38连接匹配电路成为馈电点，这样，第一辐射部32上的电流方向从第二长边L2流向第一长边L1，第二辐射部34上的电流方向为从第一绝缘带36朝向垂直于第一绝缘带36的方向。
以上对本发明实施例进行了详细介绍，本文中应用了具体个例对本发明的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本发明的方法及其核心思想；同时，对于本领域的一般技术人员，依据本发明的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本发明的限制。

Claims (20)

  1. 一种天线装置，包括射频收发电路、匹配电路及辐射体，所述匹配电路电连接在所述射频收发电路和所述辐射体之间，其特征在于，所述辐射体为移动终端的金属外壳，所述金属外壳包括第一辐射部、第二辐射部、第一绝缘带和第一连接段，所述第一绝缘带和所述第一连接段位于所述第一辐射部和所述第二辐射部之间，所述第一辐射部和所述第二辐射部之间通过所述第一绝缘带相间隔，所述第一连接段电连接在所述第一辐射部和所述第二辐射部之间，所述第一连接段与所述匹配电路电连接。
  2. 如权利要求1所述的天线装置，其特征在于，所述金属外壳包括相对设置的第一长边、第二长边以及一对短边，所述一对短边相对设置且连接在所述第一长边和所述第二长边之间，所述第一绝缘带从所述第一长边朝向所述第二长边延伸，所述第一绝缘带与所述第二长边之间形成所述第一连接段。
  3. 如权利要求1所述的天线装置，其特征在于，所述金属外壳包括相对设置的第一长边、第二长边以及一对短边，所述一对短边相对设置且连接在所述第一长边和所述第二长边之间，所述第一绝缘带从所述第一长边延伸至所述第二长边，所述第一连接段横跨所述第一绝缘带。
  4. 如权利要求1所述的天线装置，其特征在于，所述金属外壳还包括第三辐射部，所述天线装置还包括第二绝缘带和第二连接段，所述第二绝缘带和所述第二连接段位于所述第二辐射部和所述第三辐射部之间，所述第二辐射部和所述第三辐射部之间通过所述第二绝缘带相间隔，所述第二连接段电连接在所述第二辐射部和所述第三辐射部之间，所述第二连接段与所述匹配电路电连接。
  5. 如权利要求4所述的天线装置，其特征在于，所述金属外壳包括相对设置的第一长边、第二长边以及一对短边，所述一对短边相对设置且连接在所述第一长边和所述第二长边之间，所述第一绝缘带从所述第一长边朝向所述第二长边延伸，所述第一绝缘带与所述第二长边之间形成所述第一连接段，所述第二绝缘带从所述第二长边朝向所述第一长边延伸，所述第二绝缘带与所述第一长边之间形成所述第二连接段。
  6. 如权利要求4所述的天线装置，其特征在于，所述金属外壳包括相对设置的第一长边、第二长边以及一对短边，所述一对短边相对设置且连接在所述第一长边和所述第二长边之间，所述第一绝缘带和所述第二绝缘带均所述第一长边延伸至所述第二长边，所述第一连接段横跨所述第一绝缘带，所述第二连接段横跨所述第二绝缘带。
  7. 如权利要求4所述的天线装置，其特征在于，所述第一辐射部、所述第二辐射部、所述第三辐射部、所述第一连接段及所述第二连接段的均为金属材质。
  8. 如权利要求4所述的天线装置，其特征在于，所述第一绝缘带与所述第二绝缘带彼此平行。
  9. 如权利要求1所述的天线装置，其特征在于，所述第一绝缘带的材质为非信号屏蔽材料。
  10. 一种金属外壳，应用于移动终端，其特征在于，所述金属外壳与移动终端内的射频收发电路电连接且作为天线装置的辐射体，所述金属外壳包括第一辐射部、第二辐射部、第一绝缘带和第一连接段，所述第一绝缘带和所述第一连接段位于所述第一辐射部和所述第二辐射部之间，所述第一辐射部和所述第二辐射部之间通过所述第一绝缘带相间隔，所述第一连接段电连接在所述第一辐射部和所述第二辐射部之间，所述第一连接段与所述射频收发电路连接。
  11. 如权利要求10所述的金属外壳，其特征在于，所述金属外壳包括相对设置的第一长边、第二长边以及一对短边，所述一对短边相对设置且连接在所述第一长边和所述第二长边之间，所述第一绝缘带从所述第一长边朝向所述第二长边延伸，所述第一绝缘带与所述第二长边之间形成所述第一连接段。
  12. 如权利要求10所述的金属外壳，其特征在于，所述金属外壳包括相对设置的第一长边、第二长边以及一对短边，所述一对短边相对设置且连接在所述第一长边和所述第二长边之间，所述第一绝缘带从所述第一长边延伸至所述第二长边，所述第一连接段横跨所述第一绝缘带。
  13. 如权利要求10所述的金属外壳，其特征在于，所述金属外壳还包括第三辐射部，所述天线装置还包括第二绝缘带和第二连接段，所述第二绝缘带和所述第二连接段位于所述第二辐射部和所述第三辐射部之间，所述第二辐射 部和所述第三辐射部之间通过所述第二绝缘带相间隔，所述第二连接段电连接在所述第二辐射部和所述第三辐射部之间，所述第二连接段与所述匹配电路电连接。
  14. 如权利要求13所述的金属外壳，其特征在于，所述金属外壳包括相对设置的第一长边、第二长边以及一对短边，所述一对短边相对设置且连接在所述第一长边和所述第二长边之间，所述第一绝缘带从所述第一长边朝向所述第二长边延伸，所述第一绝缘带与所述第二长边之间形成所述第一连接段，所述第二绝缘带从所述第二长边朝向所述第一长边延伸，所述第二绝缘带与所述第一长边之间形成所述第二连接段。
  15. 如权利要求13所述的金属外壳，其特征在于，所述金属外壳包括相对设置的第一长边、第二长边以及一对短边，所述一对短边相对设置且连接在所述第一长边和所述第二长边之间，所述第一绝缘带和所述第二绝缘带均所述第一长边延伸至所述第二长边，所述第一连接段横跨所述第一绝缘带，所述第二连接段横跨所述第二绝缘带。
  16. 如权利要求13所述的金属外壳，其特征在于，所述第一绝缘带与所述第二绝缘带彼此平行。
  17. 如权利要求10-16任一项所述的金属外壳，其特征在于，所述第一辐射部、所述第二辐射部、所述第三辐射部、所述第一连接段及所述第二连接段的均为金属材质。
  18. 如权利要求10-16任一项所述的金属外壳，其特征在于，所述第一连接段为所述天线装置的回地点。
  19. 如权利要求18所述的金属外壳，其特征在于，所述第一连接段通过金属弹片与所述移动终端内的主板上的匹配电路电连接，所述匹配电路电连接在所述射频收发电路和所述第一连接段。
  20. 一种移动终端，其特征在于，包括如权利要求10至19任一项所述的金属外壳。
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