WO2012130044A1 - 一种无线终端及无线终端双天线系统的设计方法 - Google Patents

一种无线终端及无线终端双天线系统的设计方法 Download PDF

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Publication number
WO2012130044A1
WO2012130044A1 PCT/CN2012/072365 CN2012072365W WO2012130044A1 WO 2012130044 A1 WO2012130044 A1 WO 2012130044A1 CN 2012072365 W CN2012072365 W CN 2012072365W WO 2012130044 A1 WO2012130044 A1 WO 2012130044A1
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WIPO (PCT)
Prior art keywords
wireless terminal
antenna
board
feed point
pifa
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Application number
PCT/CN2012/072365
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English (en)
French (fr)
Inventor
范毅
兰尧
孙树辉
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华为终端有限公司
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Application filed by 华为终端有限公司 filed Critical 华为终端有限公司
Publication of WO2012130044A1 publication Critical patent/WO2012130044A1/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
    • H01Q1/12—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
    • H01Q1/48—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
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems
    • 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
    • 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
    • H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
    • H01Q9/42—Resonant antennas with feed to end of elongated active element, e.g. unipole with folded element, the folded parts being spaced apart a small fraction of the operating wavelength

Definitions

  • the present invention relates to the field of antenna technologies, and in particular, to a method for designing a wireless terminal and a wireless terminal dual antenna system.
  • a dual antenna system in a wireless terminal is difficult to design.
  • the main technical problem is that the effective area of the antenna area is small, the target bandwidth is wide, and the isolation is poor, and the correlation coefficient is poor.
  • wireless communication has more and more requirements on the performance of antennas, it is not only desirable to implement the full LTE frequency band in a limited space, but also requires various indicators, especially isolation and correlation coefficients.
  • a dual antenna system of a wireless terminal is usually constructed using two monopole antennas.
  • Embodiments of the present invention provide a dual antenna system design method for a wireless terminal and a wireless terminal, which can implement a low profile miniaturized broadband dual antenna design.
  • a wireless terminal includes a single board, a monopole antenna, and a planar inverted-F antenna PIFA antenna, wherein the first feeding point of the monopole antenna on the single board And the PIFA antenna on the board
  • the second feed points are respectively located at two ends of the wireless terminal board, the PIFA antenna is located above the single board, and a semi-opening slit is disposed in a vertical projection area of the PIFA antenna to the reference ground.
  • a method for designing a wireless terminal dual antenna system comprising:
  • the first feed point and the PIFA antenna on the wireless terminal board and the second feed point on the wireless terminal board are respectively disposed at two ends of the wireless terminal board;
  • the PIFA antenna is disposed above the wireless terminal board, and a semi-opening slit is disposed in a vertical projection area of the PIFA antenna to the reference ground.
  • the embodiment of the present invention sets the first feed point and the PIFA antenna on the single-pole antenna and the wireless terminal board and the second feed point on the wireless terminal board respectively on the wireless terminal. Both ends of the board, and the PIFA antenna is disposed above the wireless terminal board, so that the antenna radiating pieces of the two antennas are on different planes, so that the limited antenna area in the wireless terminal can be fully utilized, and two Spatial isolation and electromagnetic isolation of the antenna, reducing the correlation coefficient of the dual antenna system and improving the antenna isolation of the dual antenna system; on the other hand, by setting a semi-open gap in the vertical projection area of the PIFA antenna to the reference ground, Since the half-opening slot can couple part of the energy of the PIFA antenna and form radiation through the half-opening gap, the antenna bandwidth of the wireless terminal dual antenna system can be increased, and the design of the low-profile miniaturized broadband dual antenna can be realized.
  • FIG. 1 is a physical diagram of an experimental device for a wireless terminal according to an embodiment of the present invention.
  • FIG. 2 is a schematic structural diagram of a dual antenna system of a wireless terminal according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of a method for designing a dual antenna system of a wireless terminal according to an embodiment of the present invention. detailed description
  • FIG. 1 is a physical diagram of a wireless terminal experimental tool according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of a dual antenna system of a wireless terminal according to an embodiment of the present invention.
  • the embodiment of the present invention is an example of a data card with a connector.
  • the present invention is not limited to a data card, and can be applied to a mobile phone, a wireless internet module, and the like.
  • the wireless terminal of the embodiment of the present invention is composed of a housing 1, a single board 2, a connector 3, and a dual antenna system of the wireless terminal of the embodiment of the present invention.
  • the dual antenna system of the wireless terminal includes a monopole antenna 4 and a piFA antenna (Planar Inverted F Antenna) 5; wherein the monopole antenna 4 is at the first of the wireless terminal board 2
  • the feed point 6 is located at the two ends of the wireless terminal board at the second feed point 7 of the wireless terminal board 2 with the PIFA antenna 5, and the PIFA antenna 5 is located above the wireless terminal board 2, preferably,
  • the PIFA antenna 5 can be attached to the inner surface of the wireless terminal housing 1, and a semi-opening slit 8 is provided in the vertical projection area of the PIFA antenna 5 to the reference ground.
  • the projection area here is not limited to the area where the antenna trace is projected, but includes a large area surrounded by the outer edge projection of the antenna trace.
  • the PIFA antenna 5 is under its G-shaped line.
  • the rectangular area 9 surrounded by the outer edge projection (the dotted line in the figure).
  • the wireless terminal of the embodiment of the present invention sets the first feed point and the PIFA antenna on the single-pole antenna and the wireless terminal board to the second feed point on the wireless terminal board, respectively, on the wireless terminal board. Both ends, and the PIFA antenna is disposed above the wireless terminal board, so that the antenna radiating pieces of the two antennas are on different planes and as far as possible, so that the limited antenna area inside the wireless terminal can be fully utilized, and two Spatial isolation and electromagnetic isolation of the antennas, reducing the correlation coefficient of the dual antenna system and improving the antenna isolation of the dual antenna system; on the other hand, setting a semi-open gap in the vertical projection area of the reference ground of the PIFA antenna Since the half-opening slit can couple part of the energy of the PIFA antenna and form radiation through the half-opening slit, the wireless terminal dual antenna system can be added.
  • the antenna bandwidth is designed to realize the design of a low profile miniaturized broadband dual antenna.
  • the first feed point 6 and the second feed point 7 are respectively located at opposite ends of the diagonal of the wireless terminal board 2.
  • the feed points of the two antennas reach the farthest distance, further reducing the correlation coefficient of the dual antenna system and improving the antenna isolation of the dual antenna system.
  • the monopole antenna 4 and the PIFA antenna are separated from both ends of the single board 2.
  • the antenna traces of the monopole antenna 4 and the PIFA antenna 5 are respectively G-shaped. Since the G-shaped antenna can theoretically be divided into two parts, frequency and high frequency, and the two parts are basically independent, so that by controlling the length of the radiation piece of the G-shaped antenna, both antennas can achieve better low-frequency efficiency. And correlation coefficient.
  • Table 1 The test data is shown in Table 1.
  • the semi-opening slit 8 is disposed at an end of the connector 3 adjacent to the wireless terminal. Since the PIFA antenna 5 is also close to one end of the wireless terminal connector, the vertical projection of the PIFA antenna 5 on the single board 2 can be made, a part of which is in the half opening slit 8, and a part of which is in the half opening slit.
  • the current on the radiating strips of the two antennas can be ensured as far as possible from the current on the wireless terminal board, and the sensitivity of the two antennas to the antenna traces of each antenna is reduced, and the Multiple antenna routing options reduce the difficulty of debugging the isolation of the broadband dual antenna system and improve the antenna isolation of the dual antenna system.
  • FIG. 3 is a schematic diagram of a method for designing a dual-antenna system for a wireless terminal according to an embodiment of the present invention, and a method for designing a dual-antenna system for a wireless terminal according to an embodiment of the present invention includes:
  • the first feed point of the monopole antenna on the wireless terminal board and the second feed point of the PIFA antenna on the wireless terminal board are respectively disposed at two ends of the wireless terminal board, and The PIFA antenna is disposed above the wireless terminal board;
  • a semi-opening slit is disposed in a vertical projection area of the PIFA antenna to the reference ground.
  • the design method of the embodiment of the present invention on the one hand, the first feed point of the monopole antenna on the wireless terminal board and the second feed point of the PIFA antenna on the wireless terminal board are respectively set in the wireless terminal Both ends of the board, and the PIFA antenna is disposed above the wireless terminal board, so that the antenna radiating pieces of the two antennas are on different planes and as far as possible, so that the limited antenna inside the wireless terminal can be fully utilized.
  • a half-opening slit is provided. Since the half-opening slit can couple part of the energy of the PIFA antenna and form radiation through the half-opening slit, the antenna bandwidth of the wireless terminal dual antenna system is increased, and the design of the low-profile miniaturized broadband dual antenna is realized.
  • the design method of the embodiment of the present invention may further be that the first feed point and the second feed point are respectively located at two ends of a diagonal of the single board of the wireless terminal;
  • the feed point reaches the farthest distance, further reducing the correlation coefficient of the dual antenna system and improving the antenna isolation of the dual antenna system.
  • the antenna traces of the PIFA antenna are designed as G-shaped, respectively. Since the G-shaped antenna can theoretically be divided into two parts, low frequency and high frequency, and the two parts are basically independent, so that the radiation piece of the G-shaped antenna can be controlled. The length allows both antennas to achieve better low frequency efficiency and correlation coefficients.
  • the design method of the embodiment of the present invention may further enable the vertical projection of the PIFA antenna to the wireless terminal board by partially placing the semi-opening slit near the second feeding point, and a part of the slot in the semi-opening gap.
  • One part is between the half-opening slot and the monopole antenna, so as to ensure that the currents on the antennas of the two antennas are as far as possible to reverse the current on the wireless terminal board, and the sensitivity of the two antennas to the antenna tracks of each other is reduced.
  • Add more antenna routing options reduce the difficulty of debugging the isolation of the broadband dual antenna system, and improve the antenna isolation of the dual antenna system.

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

Abstract

本发明实施例提供了一种无线终端及无线终端双天线系统的设计方法。所述无线终端包括：单板、一个单极子天线和一个平面倒F天线PIFA天线，其中所述单极子天线在所述单板上的第一馈点和所述PIFA天线在所述单板上的第二馈点分别位于所述无线终端单板的两端，所述PIFA天线位于所述单板的上方，并且在所述PIFA天线对参考地的垂直投影区域内设置有半开口缝隙。由于两个天线的天线辐射片处于不同的平面上且尽量远离，并且由于半开口缝隙可以耦合PIFA天线的部分能量，并通过该半开口缝隙形成辐射，从而能够实现低剖面小型化宽带双天线的设计。

Description

说 明 书 一种无线终端及无线终端双天线系统的设计方法 本申请要求于 2011年 4月 1 日提交中国专利局、申请号为 201110082287.3、 发明名称为 "一种无线终端及无线终端双天线系统的设计方法" 的中国专利申 请的优先权， 其全部内容通过引用包含于本申请中。
技术领域
本发明涉及天线技术领域， 具体涉及一种无线终端及无线终端双天线系统 的设计方法。 背景技术 无线终端内双天线系统设计难度大， 主要技术难题是， 天线区域有效空间 小， 目标带宽宽， 同时隔离度差， 相关性系数差。 随着无线通信对天线的各项 性能有越来越多的要求 , 不仅希望在有限的空间内实现 LTE全频段 , 而且要求 各项指标要好， 尤其是隔离度和相关性系数。 现有技术中， 无线终端的双天线系统， 通常使用两个单极子天线构成。 由 于单极天线要求天线周围保持净空， 不能有其他金属物靠近， 这对于空间受限 的无线终端而言无疑增大了天线设计的难度； 另外如果两个单极子天线距离过 近， 将会导致天线系统的相关性系数较大， 同时增大了天线隔离度的调试难度。 发明内容 本发明实施例提供了一种无线终端及无线终端的双天线系统设计方法， 能 够实现低剖面小型化宽带双天线的设计。 本发明实施例采用如下技术方案： 一种无线终端，包括单板、一个单极子天线和一个平面倒 F天线 PIFA天线， 其中所述单极子天线在所述单板上的第一馈点和所述 PIFA天线在所述单板上的 第二馈点分别位于所述无线终端单板的两端， 所述 PIFA天线位于所述单板的上 方， 并且在所述 PIFA天线对参考地的垂直投影区域内设置有半开口缝隙。
一种无线终端双天线系统的设计方法， 包括：
将单极子天线与无线终端单板上的第一馈点和 PIFA天线与所述无线终端单 板上的第二馈点分别设置在所述无线终端单板的两端；
将所述 PIFA天线设置在所述无线终端单板的上方， 并且在所述 PIFA天线 对参考地的垂直投影区域内设置半开口缝隙。
由上述技术方案可知， 本发明实施例一方面通过将单极子天线与无线终端 单板上的第一馈点和 PIFA天线与无线终端单板上的第二馈点分别设置在所述无 线终端单板的两端， 并且将所述 PIFA天线设置在无线终端单板的上方， 使得两 个天线的天线辐射片处于不同的平面上， 从而可以充分利用无线终端内有限的 天线区域， 提高两个天线的空间隔离度和电磁隔离度， 降低双天线系统的相关 性系数和改善双天线系统的天线隔离度； 另一方面通过在所述 PIFA天线对参考 地的垂直投影区域内设置半开口缝隙， 由于半开口缝隙可以耦合 PIFA天线的部 分能量， 并通过该半开口缝隙形成辐射， 从而可以增加无线终端双天线系统的 天线带宽， 实现低剖面小型化宽带双天线的设计。
附图说明
下面对本发明描述中所需要使用的附图作一简单地介绍。
图 1为本发明实施例无线终端实验制具的实物图；
图 2为本发明实施例无线终端的双天线系统的结构示意图；
图 3为本发明实施例无线终端的双天线系统的设计方法的示意图。 具体实施方式
下面结合附图及实施例， 对本发明的技术方案进行清楚、 完整地描述。 参见图 1和图 2, 图 1为本发明实施例的无线终端实验制具的实物图， 图 2 为本发明实施例的无线终端的双天线系统的结构示意图。 需要说明是， 本发明 实施例是以带有连接器的数据卡为例进行的说明， 但本领域技术人员可以理解 的是， 本发明并不限于数据卡， 能够适用于手机、 无线上网模块等各种无线终 端。
本发明实施例的无线终端由壳体 1 , 单板 2, 连接器 3和本发明实施例的无 线终端的双天线系统构成。 所述无线终端的双天线系统， 包括一个单极子天线 4 和一个 piFA天线（平面倒 F天线， Planar Inverted F Antenna ) 5; 其中所述单极 子天线 4在无线终端单板 2的第一馈点 6, 与所述 PIFA天线 5在无线终端单板 2的第二馈点 7分别位于所述无线终端单板的两端， 并且 PIFA天线 5位于无线 终端单板 2的上方， 优选地， 可以将 PIFA天线 5附着于无线终端壳体 1的内表 面， 并且在所述 PIFA天线 5对参考地的垂直投影区域内设置有半开口缝隙 8。 需要注意的是， 这里的投影区域并非仅限于天线走线投影的区域， 而是包括天 线走线外缘投影所包围的大块区域， 如图 2中， PIFA天线 5下方被其 G形走线 外缘投影 （图中虚线部分） 包围的矩形区域 9。
本发明实施例的无线终端， 一方面通过将单极子天线与无线终端单板上的 第一馈点和 PIFA天线与无线终端单板上的第二馈点分别设置在所述无线终端单 板的两端， 并且将所述 PIFA天线设置在无线终端单板的上方， 使得两个天线的 天线辐射片处于不同的平面上且尽量远离， 从而可以充分利用无线终端内部有 限的天线区域， 提高两个天线的空间隔离度和电磁隔离度， 降低双天线系统的 相关性系数和改善双天线系统的天线隔离度； 另一方面通过在所述 PIFA天线对 参考地的垂直投影区域内设置半开口缝隙， 由于半开口缝隙可以耦合 PIFA天线 的部分能量， 并通过该半开口缝隙形成辐射， 从而可以增加无线终端双天线系 统的天线带宽， 实现低剖面小型化宽带双天线的设计。
优选地， 参见图 2 , 所述第一馈点 6和所述第二馈点 7分别位于无线终端单 板 2 的对角线两端。 从而使得两个天线的馈点达到最远的距离， 进一步降低了 双天线系统的相关性系数和改善了双天线系统的天线隔离度。 此外， 如图 2 所 示 , 所述单极子天线 4和所述 PIFA天线分居所述单板 2的两端。
一种实施例， 仍参见图 2 , 所述单极子天线 4和所述 PIFA天线 5的天线走 线分别呈 G字型。 由于 G字型天线从理论上可以分为 频和高频两部分， 而且 这两部分基本相独立， 从而通过控制 G字型天线的辐射片长度可以使两个天线 都能实现较好的低频效率和相关性系数。 测试数据如表 1所示。
表 1 天线效率和相关性系数
Figure imgf000006_0001
一般说来， 在相关性系数大于 0.5时， 认为双天线系统的相关性较差。 从表 1可以看出， 两个天线都实现了较好的低频效率和相关性系数。
优选地， 仍参见图 2 , 所述半开口缝隙 8设置在靠近所述无线终端的连接器 3 的一端。 由于 PIFA天线 5也靠近无线终端连接器的一端， 从而可以使 PIFA 天线 5在单板 2的垂直投影， 一部分在半开口缝隙 8内， 一部分在该半开口缝 隙 8和单极子天线 4之间， 这样能够保证两个天线各自天线辐射片上的电流尽 量与无线终端单板上的电流反相， 减少两个天线对彼此天线走线的敏感度， 增 加更多的天线走线选择， 降低宽带双天线系统隔离度的调试难度， 提升双天线 系统的天线隔离度。
图 3 为本发明实施例的无线终端双天线系统的设计方法的示意图， 本发明 实施例的无线终端双天线系统的设计方法包括：
531 , 将单极子天线在无线终端单板上的第一馈点和 PIFA天线在所述无线 终端单板上的第二馈点分别设置在所述无线终端单板的两端， 并且将所述 PIFA 天线设置在所述无线终端单板的上方；
532, 在所述 PIFA天线对参考地的垂直投影区域内设置半开口缝隙；。 本发明实施例的设计方法， 一方面通过将单极子天线在无线终端单板上的 第一馈点和 PIFA天线在所述无线终端单板上的第二馈点分别设置在所述无线终 端单板的两端， 并且将所述 PIFA天线设置在所述无线终端单板的上方， 使得两 个天线的天线辐射片处于不同的平面上且尽量远离， 从而可以充分利用无线终 端内部有限的天线区域， 提高两个天线的空间隔离度和电磁隔离度， 降低双天 线系统的相关性系数和改善双天线系统的天线隔离度； 另一方面通过在所述 PIFA天线对参考地的垂直投影区域内设置半开口缝隙， 由于半开口缝隙可以耦 合 PIFA天线的部分能量， 并通过该半开口缝隙形成辐射， 从而增加无线终端双 天线系统的天线带宽， 实现低剖面小型化宽带双天线的设计。
进一步地， 本发明实施例的设计方法还可以通过将所述第一馈点和所述第 二馈点分别位于所述无线终端的单板对角线的两端； 从而可以使得两个天线的 馈点达到最远的距离， 进一步降低双天线系统的相关性系数和改善双天线系统 的天线隔离度。 PIFA天线的天线走线分别设计为 G字型，由于 G字型天线从理论上可以分为低 频和高频两部分， 而且这两部分基本相独立， 从而能够通过控制 G字型天线的 辐射片长度使两个天线都能实现较好的低频效率和相关性系数。
进一步地， 本发明实施例的设计方法还可以通过将所述半开口缝隙设置在 靠近所述第二馈点， 从而可以使 PIFA天线对无线终端单板的垂直投影， 一部分 在半开口缝隙内， 一部分在该半开口缝隙和单极子天线之间， 这样能够保证两 个天线各自天线辐射片上的电流尽量与无线终端单板上的电流反相， 减少两个 天线对彼此天线走线的敏感度， 增加更多的天线走线选择， 降低宽带双天线系 统隔离度的调试难度， 提升双天线系统的天线隔离度。
可以理解是， 本发明实施例上述的双天线系统及其设计方法可以应用到使 用双天线的手机等通信终端中。 以上所述， 仅为本发明的具体实施方式， 但本 发明的保护范围并不局限于此， 任何熟悉本技术领域的技术人员在本发明揭露 的技术范围内， 可轻易想到变化或替换， 都应涵盖在本发明的保护范围之内。

Claims

权利要求
1、 一种无线终端， 其特征在于， 包括单板、 一个单极子天线和一个平 面倒 F天线 PIFA天线，其中所述单极子天线在所述单板上的第一馈点和所 述 PIFA天线在所述单板上的第二馈点分别位于所述无线终端单板的两端 , 所述 PIFA天线位于所述单板的上方， 并且在所述 PIFA天线对参考地的垂 直投影区域内设置有半开口缝隙。
2、 根据权利要求 1所述的无线终端， 其特征在于， 所述第一馈点和所 述第二馈点分别位于所述无线终端单板的对角线两端， 并且所述半开口缝 隙靠近所述第二馈点。
3、 根据权利要求 1所述的无线终端， 其特征在于， 所述单极子天线和 所述 PIFA天线的天线走线分别呈 G字型。
4、 根据权利要求 1所述的无线终端， 其特征在于， 所述无线终端具体 为数据卡， 所述无线终端还包括一连接器， 所述 PIFA天线位于所述单板靠 近所述连接器的一端。
5、 根据权利要求 4所述的无线终端， 其特征在于， 所述半开口缝隙靠 近所述无线终端连接器的一端。
6、 根据权利要求 4所述的无线终端， 其特征在于， 所述第一馈点和所 述第二馈点分别位于所述单板的对角线两端， 并且所述第二馈点靠近所述 连接器的一端。
7、 根据权利要求 1所述的无线终端， 其特征在于， 所述单极子天线和 所述 PIFA天线分居所述单板的两端。
8、 根据权利要求 1-7任一项所述的无线终端， 其特征在于， 所述无线 终端还包括壳体， 所述 PIFA天线附着于所述壳体的内表面。
9、 一种无线终端双天线系统的设计方法， 其特征在于， 包括： 将单极子天线在无线终端单板上的第一馈点和 PIFA天线在所述无线终 端单板上的第二馈点分别设置在所述无线终端单板的两端， 并且将所述 PIFA天线设置在所述无线终端单板的上方；
在所述 PIFA天线对参考地的垂直投影区域内设置半开口缝隙。
10、 根据权利要求 9 所述的无线终端的双天线系统的设计方法， 其特 征在于， 所述设计方法还包括：
将所述第一馈点和所述第二馈点分别设置在所述无线终端单板的对角 线两端， 并且将所述半开口缝隙靠近所述第二馈点。
11、 根据权利要求 9或 10所述的无线终端的双天线系统的设计方法， 其特征在于， 所述设计方法还包括：
12、 根据权利要求 9或 10所述的无线终端双天线系统的设计方法， 其 特征在于， 所述设计方法还包括：
将所述半开口缝隙设置在靠近所述第二馈点。
13、 根据权利要求 9或 10所述的无线终端双天线系统的设计方法， 其 特征在于， 所述设计方法还包括：
将所述单极子天线和所述 PIFA天线分别放置在所述单板的两端。
PCT/CN2012/072365 2011-04-01 2012-03-15 一种无线终端及无线终端双天线系统的设计方法 WO2012130044A1 (zh)

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