WO2011076075A1 - 可重构手机内置天线及其实现方法 - Google Patents

可重构手机内置天线及其实现方法 Download PDF

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Publication number
WO2011076075A1
WO2011076075A1 PCT/CN2010/079820 CN2010079820W WO2011076075A1 WO 2011076075 A1 WO2011076075 A1 WO 2011076075A1 CN 2010079820 W CN2010079820 W CN 2010079820W WO 2011076075 A1 WO2011076075 A1 WO 2011076075A1
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WO
WIPO (PCT)
Prior art keywords
antenna
frequency band
printed board
area
ground
Prior art date
Application number
PCT/CN2010/079820
Other languages
English (en)
French (fr)
Inventor
班永灵
帅培华
雷平
段恒毅
Original Assignee
华为终端有限公司
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 华为终端有限公司 filed Critical 华为终端有限公司
Priority to EP10838638.4A priority Critical patent/EP2518822B1/en
Priority to JP2012545066A priority patent/JP5532457B2/ja
Priority to KR1020127019135A priority patent/KR101390434B1/ko
Publication of WO2011076075A1 publication Critical patent/WO2011076075A1/zh
Priority to US13/529,422 priority patent/US9007274B2/en

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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
    • H01Q1/12—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
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/06—Details
    • H01Q9/14—Length of element or elements adjustable
    • 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
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
    • H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in 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
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
    • H01Q1/245—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with means for shaping the antenna pattern, e.g. in order to protect user against rf exposure
    • 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
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/30—Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/30—Arrangements for providing operation on different wavebands
    • H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
    • H01Q5/342—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes
    • H01Q5/357—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes using a single feed point
    • H01Q5/364—Creating multiple current paths
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
    • H01Q9/0421—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with a shorting wall or a shorting pin at one end of the element

Definitions

  • the embodiments of the present invention relate to antenna technologies, and in particular, to a reconfigurable mobile phone built-in antenna and an implementation method thereof. Background of the invention
  • Antenna performance in the design of mobile phone antennas faces two difficulties. One is how to obtain a larger bandwidth when working in the low frequency band, and the other is how to control the specific absorption rate (SAR) of the electromagnetic radiation when working in the high frequency band. (Assessing the indicator of the electromagnetic radiation intensity of mobile phones).
  • SAR specific absorption rate
  • Commonly used mobile phone antennas generally have two options: Monopole antenna and PIFA antenna, Monopole antenna has wider bandwidth, higher SAR, narrower bandwidth of PIFA antenna, and lower SAR.
  • the use of a single Monopole antenna or PIFA antenna in the prior art makes it difficult to achieve an optimal performance experience in a limited space. Summary of the invention
  • the embodiment of the invention provides a reconfigurable mobile phone built-in antenna and an implementation method thereof, which realizes the best performance of the mobile phone.
  • Embodiments of the present invention provide a reconfigurable mobile phone built-in antenna, including:
  • the antenna main structure includes a trace structure of the antenna, a feed spring piece contacting the antenna feed point, and a grounding spring piece contacting the ground point;
  • the additional area is located directly below the routing structure;
  • the electronic switch is configured to open the additional area and a ground area on one side of the printed board when the antenna operates in a low frequency band, and connect the additional area and the printed when the antenna operates in a high frequency band The area on the side of the board.
  • An embodiment of the present invention provides a method for implementing a built-in antenna of a reconfigurable mobile phone, including: determining a working frequency band in which the antenna is located;
  • the additional area and the ground area on one side of the printed board are disconnected by the electronic switch, and when the working frequency band is a high frequency band, the additional area and the printed board are connected through the electronic switch. The area on the ground.
  • the ground area and the additional area on one side of the printed board can be disconnected in the low frequency band, so that the antenna exhibits the characteristics of the Monopole antenna, has a large bandwidth, and is connected and printed in the high frequency band.
  • the ground area and the additional area on one side of the board make the antenna exhibit PIFA antenna characteristics, have a lower SAR value, and achieve the best performance of the mobile phone.
  • FIG. 1 is a schematic structural diagram of a built-in antenna of a reconfigurable mobile phone according to a first embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of a built-in antenna of a reconfigurable mobile phone according to a second embodiment of the present invention
  • FIG. 4 is a schematic structural diagram of a built-in antenna of a reconfigurable mobile phone according to a fourth embodiment of the present invention
  • FIG. 5 is a schematic flowchart of a method according to a fifth embodiment of the present invention. Mode for carrying out the invention
  • FIG. 1 is a schematic structural view of a built-in antenna of a reconfigurable mobile phone according to a first embodiment of the present invention, including an antenna main structure, a ground area 12 printed on one side of the printed board, an additional area 13, an electronic switch 14, and printed on the printing
  • the antenna feeding point 15 and the grounding point 16 on the other side of the board includes the antenna routing structure 111, the feeding elastic piece 112 and the grounding elastic piece 113, the feeding elastic piece 112 is in contact with the antenna feeding point 15, and the grounding elastic piece 113 Contact with the grounding point 16;
  • the circuit system on the printed circuit board excites the high-frequency current on the main structure of the antenna through the antenna feeding point 15 to form a radiated electromagnetic wave in the space;
  • the additional grounding structure of the region 13 in the main structure of the antenna Directly below 111; electronic switch 14 is used to disconnect the ground area 12 on one side of the printed board and the additional area 13 when the antenna operates in a low frequency band, and connect the printed board when the antenna operates in
  • the antenna when the additional area under the main structure of the antenna is in a non-suspended state, that is, the additional area is connected to the ground area on one side of the printed board, the antenna will exhibit the characteristics of the PIFA antenna.
  • the working ground below the main structure of the antenna is in a floating state, that is, when the additional area is disconnected from the ground area on one side of the printed board, the antenna will exhibit Monopole antenna characteristics.
  • the additional area 13 is disconnected from the ground area 12 on one side of the printed board, and in the high frequency band, the additional area 13 and the side of the printed board are The upper ground area 12 is connected; then the Monopole antenna characteristics will be presented in the low frequency band; the PIFA antenna characteristics will be presented in the high frequency band.
  • the present embodiment has a wide operating bandwidth when the Monopole antenna characteristic is present in the low frequency band, and solves the problem that the low frequency band requires a wide working bandwidth; when the high frequency band exhibits the PIFA antenna characteristic, it has a large SAR value. It solves the problem that the high frequency band needs a lower SAR value. Therefore, to achieve the best performance of the phone.
  • the electronic circuit is controlled by the PCB circuit. Whether a mobile phone works in low frequency or high frequency in an area is usually determined by the operator's network.
  • the PCB circuit of the mobile phone detects what frequency band the network is, it outputs a control signal for driving the connection and disconnection of the electronic switch. open.
  • the low frequency band refers to 824 ⁇ 960MHz
  • the high frequency band refers to 1710 ⁇ 2170MHz.
  • the number of electronic switches 14 is also not limited and may be one or more. When there are a plurality of electronic switches, the connection with the printed board ground can be more effective than the antenna, and the electromagnetic field toward the radiation direction of the human head is weaker, which is advantageous for reducing the SAR value.
  • the antenna of the embodiment by setting an electronic switch, the antenna of the embodiment exhibits Monopole antenna characteristics in a low frequency band, and presents a PIFA antenna characteristic in a high frequency band to achieve optimality of the mobile phone.
  • the routing structure can be supported by the antenna support and can be fixed to the ground area on the one side of the printed board and the additional area by a structural member such as a mobile phone case.
  • FIG. 2 is a schematic structural diagram of a built-in antenna of a reconfigurable mobile phone according to a second embodiment of the present invention, including a wiring structure 21, a ground area 22 on one side of the printed board, an additional area 23, an electronic switch 24, and a feeding elastic piece 25,
  • the feed point 26, the grounding spring 27 and the ground point 28, the feed point 26, and the ground point 28 are printed on the other side of the printed board.
  • the routing structure 21 is connected to the feeding elastic piece 25 and the grounding elastic piece 27, and the feeding elastic piece 25 is in contact with the feeding point 26, for example, by crimping, and the grounding elastic piece 27 is in contact with the grounding point 28, for example, by crimping. .
  • the additional area 23 is located directly below the trace structure 21 in the main structure of the antenna; the electronic switch 24 is used to disconnect the ground area 22 on the one side of the printed board and the additional area 23 when the antenna operates in the low frequency band, The ground area 22 and the additional area 23 on one side of the printed board are connected when the antenna operates in the high frequency band.
  • the surface of the ground region 22 and the additional region 23 on one side of the printed board is attached with a metal layer to achieve a conductive function.
  • the function module of the mobile phone printing board can detect whether the system is in a low frequency band or a high frequency band, and the function module controls the electronic switch.
  • the low frequency band refers to
  • the high frequency band refers to 1710 ⁇ 2170MHz.
  • the additional area 23 can be as shown in FIG.
  • the shape of the wiring structure 21 in this embodiment is not limited to the shape shown in Fig. 2, and may be other shapes.
  • two electronic switches are taken as an example.
  • the number of electronic switches in this embodiment is not limited to two, and may be one or more than two; and the position of the electronic switch is not limited to FIG. 2 The location shown.
  • the electronic switch in this embodiment may be implemented by a diode or a frequency selective network, or other components having a switching function.
  • the connection with the printed board ground can be more effective than the antenna, and the electromagnetic field toward the radiation direction of the human head is weaker, which is advantageous for reducing the SAR value.
  • the positions of the feeding shrapnel, the feeding point, the grounding shrapnel, and the grounding point in this embodiment are not limited to those shown in Fig. 2, and can be appropriately adjusted according to the actual debugging situation of the antenna.
  • the routing structure can be supported by the antenna support and can be fixed to the ground area on the one side of the printed board and the additional area by a structural member such as a mobile phone case.
  • the antenna of the embodiment by setting an electronic switch, the antenna of the embodiment exhibits Monopole antenna characteristics in a low frequency band, and presents a PIFA antenna characteristic in a high frequency band to achieve optimality of the mobile phone.
  • FIG. 3 is a schematic structural diagram of a built-in antenna of a reconfigurable mobile phone according to a third embodiment of the present invention, including a wiring structure 31, a ground area 32 on one side of the printed board, an additional area 33, an electronic switch 34, and a feeding elastic piece 35, Feed point 36, grounding spring 37 and ground point 38, feed point 36, and ground point 38 are printed on the other side of the printed board.
  • the routing structure 31 is connected to the feeding elastic piece 35 and the grounding elastic piece 37, and the feeding elastic piece 35 is in contact with the feeding point 36, for example, by a crimping contact, and the grounding elastic piece 37 is in contact with the grounding point 38, for example, by crimping. .
  • the additional area 33 is located directly below the trace structure 31 in the main structure of the antenna; the electronic switch 34 is used to disconnect the ground area 32 and the additional area 33 on one side of the printed board when the antenna operates in the low frequency band, Connected when the antenna is operating in the high frequency band A ground area 32 and an additional area 33 on one side of the printed board.
  • the surface of the ground region 32 and the additional region 33 on one side of the printed board is attached with a metal layer to achieve a conductive function.
  • the function module of the mobile phone PCB can detect whether the system is in a low frequency band or a high frequency band, and the function module controls the electronic switch.
  • the low frequency band refers to 824 ⁇ 960MHz
  • the high frequency band refers to 1710 ⁇ 2170MHz.
  • the additional area 33 can be as shown in FIG.
  • the shape of the wiring structure 31 in this embodiment is not limited to the shape shown in Fig. 3, and may be other shapes.
  • three electronic switches are taken as an example.
  • the number of electronic switches in this embodiment is not limited to three, and may be one or two or more than three; and, the position of the electronic switch is not limited to the figure.
  • the electronic switch in this embodiment can be implemented by using a diode or a frequency selective network, or other components having a switching function.
  • the connection with the printed board ground can be more effective than the antenna, and the electromagnetic field toward the radiation direction of the human head is weaker, which is advantageous for reducing the SAR value.
  • the position of the feeding shrapnel, the feeding point, the grounding shrapnel, and the grounding point in this embodiment is not limited to that shown in FIG. 3, and can be appropriately adjusted according to the actual debugging situation of the antenna.
  • the routing structure can be supported by the antenna support and can be fixed to the ground area on the one side of the printed board and the additional area by a structural member such as a mobile phone case.
  • the antenna of the embodiment by setting an electronic switch, the antenna of the embodiment exhibits Monopole antenna characteristics in a low frequency band, and presents a PIFA antenna characteristic in a high frequency band to achieve optimality of the mobile phone.
  • FIG. 4 is a schematic structural diagram of a built-in antenna of a reconfigurable mobile phone according to a fourth embodiment of the present invention, including a wiring structure 41, a ground area 42 on one side of the printed board, an additional area 43, an electronic switch 44, and a feeding elastic piece 45,
  • the feed point 46, the grounding spring 47 and the grounding point 48, the feed point 46, and the ground point 48 are printed on the other side of the printed board.
  • the routing structure 41 is connected to the feeding elastic piece 45 and the grounding elastic piece 47, and the feeding elastic piece 45 is in contact with the feeding point 46, for example, by crimping, and the grounding elastic piece 47 is connected to the grounding point 48. Touch, for example, using a crimp contact.
  • the additional area 43 is located directly below the trace structure 41 in the main structure of the antenna; the electronic switch 44 is used to disconnect the ground area 42 on the one side of the printed board and the additional area 43 when the antenna operates in the low frequency band, The ground area 42 and the additional area 43 on one side of the printed board are connected when the antenna operates in the high frequency band.
  • the surface of the ground region 42 and the additional region 43 on one side of the printed board are attached with a metal layer to achieve a conductive function.
  • the function module of the mobile phone PCB can detect whether the system is in a low frequency band or a high frequency band, and the function module controls the electronic switch.
  • the low frequency band refers to 824 ⁇ 960MHz
  • the high frequency band refers to 1710 ⁇ 2170MHz.
  • the additional area 43 can be as shown in FIG.
  • the shape of the wiring structure 41 in this embodiment is not limited to the shape shown in Fig. 4, and may be other shapes.
  • FIG. 4 six electronic switches are taken as an example.
  • the number of electronic switches in this embodiment is not limited to six, and may be less than or greater than six.
  • the position of the electronic switch is not limited to that shown in FIG. s position.
  • the electronic switch in this embodiment can be implemented by a diode or a frequency selective network, or other components having a switching function.
  • the connection with the printed board ground can be more effective than the antenna, and the electromagnetic field toward the radiation direction of the human head is weaker, which is advantageous for reducing the SAR value.
  • the positions of the feeding shrapnel, the feeding point, the grounding shrapnel, and the grounding point in this embodiment are not limited to those shown in Fig. 4, and can be appropriately adjusted according to the actual debugging situation of the antenna.
  • the routing structure can be supported by the antenna support and can be fixed to the ground area on the one side of the printed board and the additional area by a structural member such as a mobile phone case.
  • the antenna of the embodiment by setting an electronic switch, the antenna of the embodiment exhibits Monopole antenna characteristics in a low frequency band, and presents a PIFA antenna characteristic in a high frequency band to achieve optimality of the mobile phone.
  • the shape of the additional area is different, since the electromagnetic field distribution of the antenna radiating is different, some indexes of the antenna may be different, and may be selected according to different needs. Different additional area shapes.
  • FIG. 5 is a schematic flowchart of a method according to a fifth embodiment of the present invention, including:
  • Step 51 Determine the working frequency band in which the antenna is located
  • Step 52 When the working frequency band is a low frequency band, the additional area and the ground area on one side of the printed board are disconnected by the electronic switch. When the working frequency band is a high frequency band, the additional area is connected by the electronic switch. The area on the side of the printed board.
  • the function module of the mobile phone printing board can detect whether the system is in a low frequency band or a high frequency band, and the function module controls the electronic switch.
  • the low frequency band refers to 824 ⁇ 960MHz
  • the high frequency band refers to 1710 ⁇ 2170MHz.
  • the electronic switch in this embodiment may be implemented by a diode or a frequency selective network, or other components having a switching function, and the number may be one or more.
  • the additional area is the ground area under the main structure of the antenna.
  • the antenna When the additional area is disconnected from the ground area on one side of the printed board, the antenna will exhibit Monopole antenna characteristics and have a wider working bandwidth; When the ground area on one side of the board is connected, the antenna will exhibit PIFA antenna characteristics with a lower SA value.
  • the electronic switch controls the disconnection and communication between the additional area and the ground area on one side of the printed board, so that the antenna exhibits the Monopole antenna characteristic in the low frequency band and the PIFA antenna characteristic in the high frequency band, thereby realizing the most mobile phone. Good performance.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Support Of Aerials (AREA)
  • Details Of Aerials (AREA)
  • Telephone Set Structure (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Waveguide Aerials (AREA)
  • Transceivers (AREA)

Description

可重构手机内置天线及其实现方法
本申请要求于 2009 年 12 月 24 日提交中国专利局、 申请号为 200910215550.4、发明名称为 "可重构手机内置天线及其实现方法"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
本发明实施例涉及天线技术， 尤其涉及一种可重构手机内置天线及其 实现方法。 发明背景
手机天线设计时的天线性能面临两个困难， 一是工作在低频频段是如 何尽可能获得较大的带宽， 二是工作在高频频段时如何控制电磁照射比吸 收率（Specific Absorption Rate, SAR ) (衡量手机电磁辐射强度的指标）的 升高。 常用的手机天线一般有两种方案： Monopole 天线与 PIFA 天线， Monopole天线的带宽比较宽， SAR较高， PIFA天线的带宽比较窄， SAR 较低。 现有技术中采用单一的 Monopole天线或者 PIFA天线的方式难以在 有限的空间内， 获得最佳的性能体验。 发明内容
本发明实施例是提供一种可重构手机内置天线及其实现方法， 实现手 机的最佳性能。
本发明实施例提供了一种可重构手机内置天线， 包括：
天线主结构、 附加地区域、 印刷在印制板一面上的地区域、 电子开关 以及印刷在印制板另一面上的天线馈电点和接地点；
所述天线主结构包括天线的走线结构、 与所述天线馈电点接触的馈电 弹片和与所述接地点接触的接地弹片；
所述附加地区域位于所述走线结构的正下方； 所述电子开关用于在所述天线工作于低频频段时断开所述附加地区域 和印制板一面上的地区域， 在所述天线工作于高频频段时连通所述附加地 区域和印制板一面上的地区域。
本发明实施例提供一种可重构手机内置天线的实现方法， 包括： 确定天线处于的工作频段；
当所述工作频段为低频频段时， 通过电子开关断开附加地区域和印制 板一面上的地区域， 当所述工作频段为高频频段时， 通过电子开关连通附 加地区域和印制板一面上的地区域。
本发明实施例通过设置电子开关， 可以在低频频段时断开印制板一面 上的地区域和附加地区域， 使天线呈现 Monopole天线特性， 具有较大的带 宽， 在高频频段时连通印制板一面上的地区域和附加地区域， 使天线呈现 PIFA天线特性， 具有较低的 SAR值， 实现手机最佳的性能。 附图简要说明
此处所说明的附图用来提供对本发明的进一步理解， 构成本申请的一 部分， 并不构成对本发明的限定。 在附图中：
图 1为本发明第一实施例的可重构手机内置天线的结构示意图； 图 2为本发明第二实施例的可重构手机内置天线的结构示意图； 图 3为本发明第三实施例的可重构手机内置天线的结构示意图； 图 4为本发明第四实施例的可重构手机内置天线的结构示意图； 图 5为本发明第五实施例的方法流程示意图。 实施本发明的方式
为使本发明的目的、 技术方案和优点更加清楚明白， 下面结合实施方 式和附图， 对本发明做进一步详细说明。 在此， 本发明的示意性实施方式 及其说明用于解释本发明， 但并不作为对本发明的限定。 图 1为本发明第一实施例的可重构手机内置天线的结构示意图， 包括天 线主结构、 印刷在印制板一面上的地区域 12、 附加地区域 13、 电子开关 14 以及印刷在印制板另一面上的天线馈电点 15和接地点 16; 天线主结构包括 天线的走线结构 111、 馈电弹片 112和接地弹片 113， 馈电弹片 112与天线馈 电点 15接触， 接地弹片 113与接地点 16接触； 印制板上的电路系统通过天线 馈电点 15激励起天线主结构上的高频电流， 进而在空间形成辐射电磁波； 附加地区域 13位于天线主结构中的走线结构 111的正下方； 电子开关 14用于 在该天线工作于低频频段时断开印制板一面上的地区域 12和附加地区域 13 的连接， 在该天线工作于高频频段时连通印制板一面上的地区域 12和附加 地区域 13。
才艮据 PIFA天线和 Monopole天线的形成原理， 当天线主结构下方的附加 地区域处于非悬空状态， 即附加地区域与印制板一面上的地区域连通时， 天线将呈现 PIFA天线特性， 当天线主结构下方的工作地处于悬空状态， 即 附加地区域与印制板一面上的地区域断开时， 天线将呈现 Monopole天线特 性。
因此， 本实施例通过设置电子开关 14， 在低频频段时， 使附加地区域 13与印制板一面上的地区域 12断开， 在高频频段时， 使附加地区域 13与印 制板一面上的地区域 12连通； 则在低频频段将呈现 Monopole天线特性； 在 高频频段呈现 PIFA天线特性。
本领域技术人员知道， 天线工作在低频频段时， 较宽的工作带宽是主 要需要解决的问题， 在高频频段时， 较低的 SA 值是主要需要解决的问题。
因此， 本实施例在低频频段呈现 Monopole天线特性时， 具有较宽的工 作带宽，解决了低频频段需要较宽的工作带宽的问题；在高频频段呈现 PIFA 天线特性时，具有较大的 SAR值，解决了高频频段需要较低的 SAR值的问题。 因此， 实现手机最佳的性能。
本实施例中，可以通过手机 PCB电路检测系统是处于低频频段还是高频 频段， 由该 PCB电路控制电子开关。 一个手机在一个地区是工作于低频， 还 是高频，通常由运营商的网络决定， 当手机的 PCB电路检测到网络是什么频 段， 就会输出一个控制信号， 用于驱动电子开关的连接与断开。 其中， 低 频频段指的是 824〜960MHz， 高频频段指的是 1710〜2170MHz。 的任意合理形状， 附加地区域 13的形状也可以是任意的。 电子开关 14的个 数也是不限的， 可以为一个或多个。 电子开关为多个时， 可以使附加地与 印制板地的连接相对天线来说呈现更有效的地效应， 使朝向人头辐射方向 的电磁场更弱， 有利于降低 SAR值。
本实施例通过设置电子开关， 使得本实施例的天线在低频频段时呈现 Monopole天线特性， 在高频频段时呈现 PIFA天线特性， 实现手机的最佳性 h
匕。
在实际实施时， 根据附加地区域形状的不同， 可以设置不同个数及位 置的电子开关， 具体可参见下述实施例。
在实施时， 走线结构可以采用天线支架支撑， 并可以与印制板一面上 的地区域及附加地区域， 通过手机外壳等结构件进行固定。
图 2为本发明第二实施例的可重构手机内置天线的结构示意图， 包括走 线结构 21、 印制板一面上的地区域 22、 附加地区域 23、 电子开关 24及馈电 弹片 25、 馈电点 26、 接地弹片 27和接地点 28， 馈电点 26、 接地点 28印刷在 印制板的另一面。 走线结构 21与馈电弹片 25及接地弹片 27连接， 馈电弹片 25与馈电点 26接触， 例如， 采用压接方式接触， 接地弹片 27与接地点 28接 触， 例如， 采用压接方式接触。 附加地区域 23位于天线主结构中的走线结 构 21的正下方； 电子开关 24用于在该天线工作于低频频段时断开印制板一 面上的地区域 22和附加地区域 23的连接， 在该天线工作于高频频段时连通 印制板一面上的地区域 22和附加地区域 23。 其中， 印制板一面上的地区域 22和附加地区域 23的表面附有金属层， 以实现导电功能。 本实施例中， 可以通过手机印制板上的功能模块检测系统是处于低频 频段还是高频频段， 由该功能模块控制电子开关。 其中， 低频频段指的是
824〜960MHz， 高频频段指的是 1710〜2170MHz。
本实施例中， 附加地区域 23可以如图 2所示。
本实施例中的走线结构 21的形状不限于图 2所示的形状， 也可以为其他 形状。 图 2中以两个电子开关为例， 但是， 本实施例的电子开关的个数并不 限于两个， 也可以为 1个或者大于两个； 并且， 电子开关的位置也不限于图 2所示的位置。 本实施例中的电子开关可以采用二极管或者选频网络的实现 方式， 或者为其他具有切换功能的元件。 电子开关为多个时， 可以使附加 地与印制板地的连接相对天线来说呈现更有效的地效应， 使朝向人头辐射 方向的电磁场更弱， 有利于降低 SAR值。
本实施例中的馈电弹片、 馈电点、 接地弹片、 接地点的位置也不限于 图 2所示， 可以才艮据天线的实际调试情况适当调整。
在实施时， 走线结构可以采用天线支架支撑， 并可以与印制板一面上 的地区域及附加地区域， 通过手机外壳等结构件进行固定。
本实施例通过设置电子开关， 使得本实施例的天线在低频频段时呈现 Monopole天线特性， 在高频频段时呈现 PIFA天线特性， 实现手机的最佳性 h
fib
图 3为本发明第三实施例的可重构手机内置天线的结构示意图， 包括走 线结构 31、 印制板一面上的地区域 32、 附加地区域 33、 电子开关 34及馈电 弹片 35、 馈电点 36、 接地弹片 37和接地点 38， 馈电点 36、 接地点 38印刷在 印制板的另一面。 走线结构 31与馈电弹片 35及接地弹片 37连接， 馈电弹片 35与馈电点 36接触， 例如， 采用压接方式接触， 接地弹片 37与接地点 38接 触， 例如， 采用压接方式接触。 附加地区域 33位于天线主结构中的走线结 构 31的正下方； 电子开关 34用于在该天线工作于低频频段时断开印制板一 面上的地区域 32和附加地区域 33的连接， 在该天线工作于高频频段时连通 印制板一面上的地区域 32和附加地区域 33。 其中， 印制板一面上的地区域 32和附加地区域 33的表面附有金属层， 以实现导电功能。
本实施例中，可以通过手机 PCB上的功能模块检测系统是处于低频频段 还是高频频段， 由该功能模块控制电子开关。 其中， 低频频段指的是 824〜960MHz， 高频频段指的是 1710〜2170MHz。
本实施例中， 附加地区域 33可以如图 3所示。
本实施例中的走线结构 31的形状不限于图 3所示的形状， 也可以为其他 形状。
图 3中以三个电子开关为例， 但是， 本实施例的电子开关的个数并不限 于三个， 也可以为 1或 2个或者大于三个； 并且， 电子开关的位置也不限于 图 3所示的位置。 本实施例中的电子开关可以采用二极管或者选频网络方式 实现， 或者为其他具有切换功能的元件。 电子开关为多个时， 可以使附加 地与印制板地的连接相对天线来说呈现更有效的地效应， 使朝向人头辐射 方向的电磁场更弱， 有利于降低 SAR值。
本实施例中的馈电弹片、 馈电点、 接地弹片、 接地点的位置也不限于 图 3所示， 可以才艮据天线的实际调试情况适当调整。
在实施时， 走线结构可以采用天线支架支撑， 并可以与印制板一面上 的地区域及附加地区域， 通过手机外壳等结构件进行固定。
本实施例通过设置电子开关， 使得本实施例的天线在低频频段时呈现 Monopole天线特性， 在高频频段时呈现 PIFA天线特性， 实现手机的最佳性 h
匕。
图 4为本发明第四实施例的可重构手机内置天线的结构示意图， 包括走 线结构 41、 印制板一面上的地区域 42、 附加地区域 43、 电子开关 44及馈电 弹片 45、 馈电点 46、 接地弹片 47和接地点 48， 馈电点 46、 接地点 48印刷在 印制板的另一面。 走线结构 41与馈电弹片 45及接地弹片 47连接， 馈电弹片 45与馈电点 46接触， 例如， 采用压接方式接触， 接地弹片 47与接地点 48接 触， 例如， 采用压接方式接触。 附加地区域 43位于天线主结构中的走线结 构 41的正下方； 电子开关 44用于在该天线工作于低频频段时断开印制板一 面上的地区域 42和附加地区域 43的连接， 在该天线工作于高频频段时连通 印制板一面上的地区域 42和附加地区域 43。 其中， 印制板一面上的地区域 42和附加地区域 43的表面附有金属层， 以实现导电功能。
本实施例中，可以通过手机 PCB上的功能模块检测系统是处于低频频段 还是高频频段， 由该功能模块控制电子开关。 其中， 低频频段指的是 824〜960MHz， 高频频段指的是 1710〜2170MHz。
本实施例中， 附加地区域 43可以如图 4所示。
本实施例中的走线结构 41的形状不限于图 4所示的形状， 也可以为其他 形状。
图 4中以六个电子开关为例， 但是， 本实施例的电子开关的个数并不限 于六个， 也可以为小于或者大于六个； 并且， 电子开关的位置也不限于图 4 所示的位置。 本实施例中的电子开关可以采用二极管或者选频网络方式实 现， 或者为其他具有切换功能的元件。 电子开关为多个时， 可以使附加地 与印制板地的连接相对天线来说呈现更有效的地效应， 使朝向人头辐射方 向的电磁场更弱， 有利于降低 SAR值。
本实施例中的馈电弹片、 馈电点、 接地弹片、 接地点的位置也不限于 图 4所示， 可以才艮据天线的实际调试情况适当调整。
在实施时， 走线结构可以采用天线支架支撑， 并可以与印制板一面上 的地区域及附加地区域， 通过手机外壳等结构件进行固定。
本实施例通过设置电子开关， 使得本实施例的天线在低频频段时呈现 Monopole天线特性， 在高频频段时呈现 PIFA天线特性， 实现手机的最佳性 h
匕。
上述实施例中， 当附加地区域的形状不同时， 因为天线向外辐射的电 磁场分布会不同， 天线的某些指标也会不同， 可以根据不同的需求， 选择 不同的附加地区域形状。
图 5为本发明第五实施例的方法流程示意图， 包括：
步骤 51 : 确定天线处于的工作频段；
步骤 52: 当所述工作频段为低频频段时， 通过电子开关断开附加地区 域和印制板一面上的地区域， 当所述工作频段为高频频段时， 通过电子开 关连通附加地区域和印制板一面上的地区域。
本实施例中， 可以通过手机印制板上的功能模块检测系统是处于低频 频段还是高频频段， 由该功能模块控制电子开关。 其中， 低频频段指的是 824〜960MHz， 高频频段指的是 1710〜2170MHz。 本实施例中的电子开关可 以采用二极管或者选频网络实现， 或者为其他具有切换功能的元件， 个数 可以为一个或多个。
附加地区域为位于天线主结构下方的地区域， 当附加地区域与印制板 一面上的地区域断开时， 天线将呈现 Monopole天线特性， 具有较宽的工作 带宽； 当附加地区域与印制板一面上的地区域连通时， 天线将呈现 PIFA天 线特性， 具有较低的 SA 值。
本实施例通过电子开关控制附加地区域与印制板一面上的地区域的断 开及连通， 使得天线在低频频段时呈现 Monopole天线特性， 在高频频段时 呈现 PIFA天线特性， 实现手机的最佳性能。
本领域普通技术人员可以理解： 实现上述方法实施例的全部或部分步 骤可以通过程序指令相关的硬件来完成， 前述的程序可以存储于一计算机 可读取存储介质中， 该程序在执行时， 执行包括上述方法实施例的步骤； 而前述的存储介质包括： ROM、 RAM, 磁碟或者光盘等各种可以存储程序 代码的介质。
以上所述的具体实施方式， 对本发明的目的、 技术方案和有益效果进 行了进一步详细说明， 所应理解的是， 以上所述仅为本发明的具体实施方 式而已， 并不用于限定本发明的保护范围， 凡在本发明的精神和原则之内， 所做的任何修改、 等同替换、 改进等， 均应包含在本发明的保护范围之内。

Claims

权利要求
1、 一种可重构手机内置天线， 其特征在于， 包括：
天线主结构、 附加地区域、 印刷在印制板一面上的地区域、 电子开关 以及印刷在印制板另一面上的天线馈电点和接地点；
所述天线主结构包括天线的走线结构、 与所述天线馈电点接触的馈电 弹片和与所述接地点接触的接地弹片；
所述附加地区域位于所述走线结构的正下方；
所述电子开关用于在所述天线工作于低频频段时断开所述附加地区域 和印制板一面上的地区域， 在所述天线工作于高频频段时连通所述附加地 区域和印制板一面上的地区域。
2、 根据权利要求 1所述的天线， 其特征在于， 所述附加地区域和印制 板一面上的地区域断开时， 所述天线呈现 Monopole天线特性， 所述附加地 区域和印制板一面上的地区域连通时， 所述天线呈现 PIFA天线特性。
3、 根据权利要求 1所述的天线， 其特征在于， 所述低频频段为 824〜960MHz， 所述高频频段为 1710〜2170MHz。
4、 根据权利要求 1所述的天线， 其特征在于， 所述电子开关的个数为 一个或多个。
5、 根据权利要求 1所述的天线， 其特征在于， 所述电子开关的实现方 式为二极管或者选频网络。
6、 根据权利要求 1所述的天线， 其特征在于， 所述天线主结构中的馈 电弹片、 接地弹片分别与印制板另一面上的天线馈电点、 接地点通过压接 方式接触。
7、 一种可重构手机内置天线的实现方法， 其特征在于， 包括： 确定天线处于的工作频段；
当所述工作频段为低频频段时， 通过电子开关断开附加地区域和印制 板一面上的地区域， 当所述工作频段为高频频段时， 通过电子开关连通附 加地区域和印制板一面上的地区域。
8、 根据权利要求 7所述的方法， 其特征在于， 所述附加地区域和印制 板一面上的地区域断开时， 所述天线呈现 Monopole天线特性， 所述附加地 区域和印制板一面上的地区域连通时， 所述天线呈现 PIFA天线特性。
9、 根据权利要求 7所述的方法， 其特征在于， 所述低频频段为 824〜960MHz， 所述高频频段为 1710〜2170MHz。
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