WO2008031276A1 - A method for raising the radiating efficiency of the antenna of mobile telephone - Google Patents
A method for raising the radiating efficiency of the antenna of mobile telephone Download PDFInfo
- Publication number
- WO2008031276A1 WO2008031276A1 PCT/CN2006/002371 CN2006002371W WO2008031276A1 WO 2008031276 A1 WO2008031276 A1 WO 2008031276A1 CN 2006002371 W CN2006002371 W CN 2006002371W WO 2008031276 A1 WO2008031276 A1 WO 2008031276A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- antenna
- strip
- radiation
- mobile phone
- main
- Prior art date
Links
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
- H01Q1/12—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
Definitions
- the invention relates to a method for improving the radiation efficiency of a mobile phone antenna. Background technique
- PIFAs planar inverted-F antennas
- the radiation efficiency of existing antennas is not easy to reach very high values. There are two reasons for this.
- the size of the antenna should take into account the requirements of the SAR test standard. In the case of large radiation power, the antenna spatial pattern, near-field and far-field design mismatch will cause the SAR value to exceed the standard.
- the mobile phone antenna has strict requirements on the radiation patterns in several main polarization planes, and stipulates the principle of optimal radiation pattern. If the main radiating strip of the antenna is concentrated on one side of the mobile phone, the asymmetry of the radiating strip will cause the radiation pattern to be asymmetrical. Therefore, it is very difficult to minimize the radiation area of the antenna and optimize the radiation pattern of the antenna at the same time.
- the radiation performance of the antenna is mainly determined by the position, shape and structure of the main radiation field; the auxiliary radiation field area functions as the extended impedance matching frequency band, and how to control the geometric position parameters of the main radiation field and the auxiliary radiation field, so that It is an unsolved problem to meet the antenna's electrical performance and antenna field performance under specific requirements.
- the invention provides a method for improving the radiation efficiency of a mobile phone antenna, which mainly comprises the following steps:
- the width of the main radiation strip, the width of the auxiliary radiation strip, and the gap between the two radiation strips may be adjusted according to the required antenna performance, thereby Determine the shape of the optimized antenna.
- the main radiating strip of the antenna is disposed at the top position of the mobile phone, in particular, the main radiating portion of the antenna is at the top middle position of the mobile phone to achieve the antenna radiation pattern. Symmetrical purpose.
- the method for improving the radiation efficiency of the mobile phone antenna of the present invention is based on the antenna radiation principle, and the antenna is arranged in a conformal and compact manner, which is characterized by fully utilizing the main radiation area of the antenna, compressing the auxiliary radiation area of the antenna, and simultaneously solving the radiation efficiency of the antenna.
- the height and antenna size are small, the contradiction between the minimum radiation area of the antenna and the optimization of the radiation pattern of the antenna is effectively improved.
- Antenna radiation efficiency and gain improve handset performance.
- Fig. 1 is a diagram showing the distribution of main radiating strips and auxiliary radiating strips of an antenna in an extremely small distributed area under the GSM900/DCS/PCS tri-band operation optimized by the method of the present invention. detailed description
- the method of the present invention When the method of the present invention is applied to improve the radiation performance of the antenna, it is first necessary to obtain the ferromagnetic material and the iron ring in the speaker near the antenna, the camera medium, the metal ring near the antenna area, and the radio frequency under the antenna coverage area through actual debugging and testing.
- the electrical performance parameters of the interface component and the audio interface component, and the above components are modeled by the simulation software using these parameters.
- the main radiation strip 1 of the antenna should be kept away from the antenna.
- the speaker 4 of the mobile phone is laid.
- the camera medium (not shown) in the mobile phone has a relatively large dielectric constant, which can increase the electrical length of the space and effectively prevent the electromagnetic wave energy from being transmitted to the horn.
- the main radiant strip 1 of the antenna can be placed adjacent to the camera while In order to ensure the minimum distribution area of the antenna, the main radiating strip 1 of the antenna can be arranged around the periphery of the cutting hole 3 of the camera in a conformal manner, so as to achieve the purpose of adjusting the resonant frequency of the antenna and ensuring the radiation efficiency in a large range. .
- the auxiliary radiating strip 2 Since the performance of the antenna is mainly determined by the position and shape and structure of the main radiating strip 1, the auxiliary radiating strip 2 only functions to expand the impedance matching frequency band. Therefore, the auxiliary radiating strip 2 can be disposed closer to the speaker 4. .
- the auxiliary radiation strip 1 of the antenna takes only the narrowest width to meet the bandwidth requirement and is connected to the feeding point of the mobile phone.
- the simulation compares the key characteristics and parameters such as current distribution, electric field distribution, energy transmission efficiency, and antenna gain on the main radiating strip 1 of the antenna under various shapes, so as to find that the antenna distribution area can be minimized at the same time.
- the antenna radiation efficiency is equal to the antenna shape of the lowest threshold of 30%.
- the width of the main radiating strip 1 of the antenna is related to the higher-order mode of the antenna, the larger the width, the more the higher-order mode. Therefore, controlling the width of the main radiating strip 1 of the antenna causes the antenna to radiate only the required mode in the GSM/DCS/PCS band, which is an improvement.
- the mobile phone antenna can be further optimized, and the width of the main radiating strip 1 of the antenna, the width of the auxiliary radiating strip 2, and the between the two radiating strips can be adjusted according to the required antenna performance.
- the gaps are spaced to determine the optimized antenna shape.
- the main radiating strip 1 of the antenna should also be placed in the middle of the top of the mobile phone to achieve the purpose of symmetry of the radiation pattern of the antenna.
- an antenna with an extremely small distribution area that can be optimized in the GSM900/DCS/PCS tri-band, which is optimized by the method of the present invention, has a distribution area of about 22 ⁇ 18 square millimeters. 2 ⁇
- the volume is only 2. 8 cubic centimeters, much smaller than the minimum reported in the literature reported that the minimum antenna volume value of 4. 2 cubic centimeters.
- the radiation efficiency of the antenna is between 30% and 45%; in the DCS/PCS band, the radiation efficiency of the antenna is between 35% and 70%, and the above radiation efficiency exceeds the minimum of the RF performance parameters of the mobile phone.
- the threshold is 30%.
- the contradiction between the antenna radiation efficiency and the antenna size is small, the antenna radiation area is minimized and the antenna radiation pattern is optimized, the antenna radiation efficiency and gain are effectively improved, and the mobile phone is improved. performance.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Telephone Set Structure (AREA)
Abstract
A method for raising the radiating efficiency of the antenna of mobile telephone mostly comprises the steps as follows:(1) modeling the related components near the antenna;(2) modeling the antenna, wherein, a main-radiate-strip (1) is conformally arranged away from a ferromagnetism matter and a ferric ring in a speaker (4) of the mobile telephone and surrounding a medium cut hole (3) for a camera lens, and a servicing-radiate-strip (2) is arranged near the ferromagnetism matter and the ferric ring in a speaker (4) of the mobile telephone and within a predetermined distance of said main-radiate-strip(1);(3)obtaining an antenna pattern which synchronously satisfied that the distributing area of the antenna is smallest and the radiating efficiency of the antenna equals to the lowest threshold value. Said method solves synchronously the inconsistency between high radiating efficiency of the antenna and samll sized antenna, and the inconsistency between minimizing the radiating area of the antenna and optimizing the radiating direction pattern. Said method raises effectively the radiating efficiency of the antenna and plus, and improves the performance of the mobile telephone.
Description
一种提高手机天线辐射效率的方法 技术领域 Method for improving radiation efficiency of mobile phone antenna
本发明涉及一种提高手机天线辐射效率的方法。 背景技术 The invention relates to a method for improving the radiation efficiency of a mobile phone antenna. Background technique
随着通信技术的飞速发展， 手机的体积变得越来越小， 作为手机关 键元件之一的天线也在朝向小型化方向发展。 已有的手机天线无法实现 在确保天线分布面积较小的同时提供足够高的辐射效率来满足通信需 求， 造成上述情况的原因主要包括以下几点： With the rapid development of communication technology, the size of mobile phones has become smaller and smaller, and antennas, which are one of the key components of mobile phones, are also moving toward miniaturization. Existing mobile phone antennas cannot achieve sufficient radiation efficiency to ensure communication requirements while ensuring a small antenna distribution area. The reasons for the above are mainly the following:
第一， 手机中所配置的元件越来越多， 且这些元件大都安置在天线 附近， 对天线性能有明显影响。 特别是手机喇叭中的铁磁体、 铁环等， 对天线能量辐射效率、 天线谐振频带中心值及阻抗匹配频带宽度等参数 均产生极大影响。 First, there are more and more components in the mobile phone, and most of these components are placed near the antenna, which has a significant impact on the antenna performance. In particular, ferromagnetics, iron rings, etc. in mobile phone horns have a great influence on parameters such as antenna energy radiation efficiency, antenna resonance frequency band center value and impedance matching bandwidth.
第二， 目前已知的对平面倒 F型天线（PIFA )所进行的仿真一般只针 对简单 PCB板平面上铺设天线辐射条所形成的空间结构进行， 所得结果难 以应用于实际的手机天线设计中。 Second, the currently known simulations of planar inverted-F antennas (PIFAs) are generally only performed on the spatial structure formed by laying antenna strips on a simple PCB board plane, and the results are difficult to apply to actual mobile phone antenna designs. .
第三， 现有天线的辐射效率不易达到很高的数值。 其原因有二， 首 先， 天线尺寸与辐射效率有复杂的对应关系。 在 PIFA天线中， 一般是天 线下面空间越高， 天线下体积越大， 则天线辐射效率越高； 但天线高度 一定时， 如果天线电流宽度方向分布过大， 则将出现多个高次模， 使主 模辐射功率降低， 有效辐射效率下降， 故不能简单地通过加宽天线辐射 条来提高功率。 其次， 天线的尺寸要考虑 SAR测试标准的要求。 在辐射功 率大的情况下， 天线空间方向图、 近场和远场设计失当会使 SAR值超标。 Third, the radiation efficiency of existing antennas is not easy to reach very high values. There are two reasons for this. First, there is a complex correspondence between antenna size and radiation efficiency. In a PIFA antenna, generally the space below the antenna is higher, and the larger the volume under the antenna, the higher the antenna radiation efficiency; but when the antenna height is constant, if the antenna current width direction is too large, multiple high-order modes will appear. By reducing the radiated power of the main mode and reducing the effective radiation efficiency, it is not possible to simply increase the power by widening the antenna strip. Second, the size of the antenna should take into account the requirements of the SAR test standard. In the case of large radiation power, the antenna spatial pattern, near-field and far-field design mismatch will cause the SAR value to exceed the standard.
第四， 手机天线对几个主极化平面内辐射方向图有较严格要求， 规 定了最佳辐射方向图原则。 如果将天线主辐射条集中布设在手机的一侧， 则辐射条的非对称性将使辐射方向图出现非对称性。 因此同时实现天线 辐射面积最小化与天线辐射方向图最优化有很大的困难。
第五， 天线的辐射性能主要由主辐射场区位置及形状、 结构决定； 辅助辐射场区起扩展阻抗匹配频带宽度作用， 如何控制主辐射场区和辅 助辐射场区几何位置参数， 使之同时满足特定要求下的天线电性能、 天 线场性能是悬而未决的难题。 Fourth, the mobile phone antenna has strict requirements on the radiation patterns in several main polarization planes, and stipulates the principle of optimal radiation pattern. If the main radiating strip of the antenna is concentrated on one side of the mobile phone, the asymmetry of the radiating strip will cause the radiation pattern to be asymmetrical. Therefore, it is very difficult to minimize the radiation area of the antenna and optimize the radiation pattern of the antenna at the same time. Fifth, the radiation performance of the antenna is mainly determined by the position, shape and structure of the main radiation field; the auxiliary radiation field area functions as the extended impedance matching frequency band, and how to control the geometric position parameters of the main radiation field and the auxiliary radiation field, so that It is an unsolved problem to meet the antenna's electrical performance and antenna field performance under specific requirements.
基于上述原因， 需要提供一种提高手机天线辐射效率的方法， 使得 优化后的手机天线能够同时实现在 GSM900、 DCS/PCS频段上有较小的占 用面积且具有较高的辐射效率。 发明内容 For the above reasons, it is necessary to provide a method for improving the radiation efficiency of a mobile phone antenna, so that the optimized mobile phone antenna can simultaneously achieve a small occupied area in the GSM900, DCS/PCS frequency band and has high radiation efficiency. Summary of the invention
本发明提供了一种提高手机天线辐射效率的方法， 其主要包括以下 几个步驟： The invention provides a method for improving the radiation efficiency of a mobile phone antenna, which mainly comprises the following steps:
( 1 )对天线附近喇叭中的铁磁物质及铁环、 摄像头介质、 天线区域 附近的金属环、 天线覆盖区域下的射频接口件、 音频接口件进行建模； (1) Modeling the ferromagnetic material and the iron ring in the speaker near the antenna, the camera medium, the metal ring near the antenna area, the RF interface member under the antenna coverage area, and the audio interface device;
( 2 )对天线进行建模， 将天线主辐射条共形地布设在远离手机喇叭 中的铁磁物质及铁环且围绕摄像头介质切割孔的位置， 将手机天线中的 辅助辐射条布设在靠近手机喇叭中的铁磁物质及铁环且距离所述主辐射 条预定间隔空隙的位置； (2) Modeling the antenna, and arranging the main radiating strip of the antenna in a shape away from the ferromagnetic material and the iron ring in the mobile phone speaker and surrounding the cutting hole of the camera medium, and arranging the auxiliary radiation strip in the mobile phone antenna close to a ferromagnetic substance in the mobile phone horn and a hoop and a position spaced apart from the main radiation strip by a predetermined interval;
( 3 )通过仿真调试确定可以同时满足天线分布面积最小且天线辐射 效率等于一最低门 P艮值的天线形状。 (3) It is determined by simulation debugging that the shape of the antenna which can satisfy the minimum antenna distribution area and the antenna radiation efficiency is equal to a minimum gate P艮 value.
为了进一步提高手机天线的辐射效率， 还可以在步骤（3 )之后， 根 据所需要达到的天线性能调整主辐射条的宽度、 辅助辐射条的宽度以及 所述两辐射条之间的间隔空隙， 从而确定优化后的天线形状。 In order to further improve the radiation efficiency of the mobile phone antenna, after step (3), the width of the main radiation strip, the width of the auxiliary radiation strip, and the gap between the two radiation strips may be adjusted according to the required antenna performance, thereby Determine the shape of the optimized antenna.
优选地， 在步骤（2 ) 中对天线进行建模时， 将天线的主辐射条布设 在手机的顶部位置， 特别是使天线的主要辐射部分在手机的顶部中间位 置， 以达到天线辐射方向图对称的目的。 Preferably, when the antenna is modeled in step (2), the main radiating strip of the antenna is disposed at the top position of the mobile phone, in particular, the main radiating portion of the antenna is at the top middle position of the mobile phone to achieve the antenna radiation pattern. Symmetrical purpose.
本发明的提高手机天线辐射效率的方法从天线辐射原理出发， 采用 共形、 紧凑的方式布设天线， 其特点是充分利用天线的主辐射区域， 压 缩天线的辅助辐射区域， 同时解决了天线辐射效率高与天线尺寸小， 天 线辐射面积最小化与天线辐射方向图最优化之间的矛盾， 有效地提高了
天线辐射效率和增益并改善了手机性能。 附图说明 The method for improving the radiation efficiency of the mobile phone antenna of the present invention is based on the antenna radiation principle, and the antenna is arranged in a conformal and compact manner, which is characterized by fully utilizing the main radiation area of the antenna, compressing the auxiliary radiation area of the antenna, and simultaneously solving the radiation efficiency of the antenna. The height and antenna size are small, the contradiction between the minimum radiation area of the antenna and the optimization of the radiation pattern of the antenna is effectively improved. Antenna radiation efficiency and gain improve handset performance. DRAWINGS
结合附图， 可对上述简要概述、 以及后续对本发明优选实施例的详 细描述有更好的理解， 其中： A brief overview of the foregoing, as well as a detailed description of the preferred embodiments of the present invention, in the
图 1 示出了采用本发明方法优化后的在 GSM900/DCS/PCS 三频段工 作的、 极端小分布面积状态下的天线主辐射条、 辅助辐射条分布图。 具体实施方式 Fig. 1 is a diagram showing the distribution of main radiating strips and auxiliary radiating strips of an antenna in an extremely small distributed area under the GSM900/DCS/PCS tri-band operation optimized by the method of the present invention. detailed description
当应用本发明的方法改善天线辐射性能的时候， 首先需要通过实际 的调试和测试获得天线附近喇叭中的铁磁物质及铁环、 摄像头介质、 天 线区域附近的金属环、 天线覆盖区域下的射频接口件、 音频接口件的电 性能参数， 并且利用这些参数通过仿真软件对上述元件进行建模。 When the method of the present invention is applied to improve the radiation performance of the antenna, it is first necessary to obtain the ferromagnetic material and the iron ring in the speaker near the antenna, the camera medium, the metal ring near the antenna area, and the radio frequency under the antenna coverage area through actual debugging and testing. The electrical performance parameters of the interface component and the audio interface component, and the above components are modeled by the simulation software using these parameters.
接下来需要对天线进行建模。 如图 1 所示出的， 由于喇叭中铁磁物 质会吸收天线发射出的电磁波能量， 而喇 p八上的铁环会对天线的谐振频 点造成影响， 因此应当将天线的主辐射条 1远离手机的喇叭 4布设。 另 一方面， 手机中的摄像头介质 （未示出）介电常数比较大， 能增加空间 的电长度， 有效阻止电磁波能量向喇叭方向传导， 因此可以将天线的主 辐射条 1 临近摄像头设置， 同时为了保证天线的分布面积最小， 可以采 用共形的方式围绕摄像头介廣切割孔 3的外围布设天线的主辐射条 1 ,以 便实现在较大范围调整天线谐振频点和保证辐射效率两方面的目的。 Next you need to model the antenna. As shown in Fig. 1, since the ferromagnetic substance in the horn absorbs the electromagnetic wave energy emitted by the antenna, and the iron ring on the lap eight affects the resonance frequency of the antenna, the main radiation strip 1 of the antenna should be kept away from the antenna. The speaker 4 of the mobile phone is laid. On the other hand, the camera medium (not shown) in the mobile phone has a relatively large dielectric constant, which can increase the electrical length of the space and effectively prevent the electromagnetic wave energy from being transmitted to the horn. Therefore, the main radiant strip 1 of the antenna can be placed adjacent to the camera while In order to ensure the minimum distribution area of the antenna, the main radiating strip 1 of the antenna can be arranged around the periphery of the cutting hole 3 of the camera in a conformal manner, so as to achieve the purpose of adjusting the resonant frequency of the antenna and ensuring the radiation efficiency in a large range. .
由于天线的性能主要由主辐射条 1 的位置以及形状、 结构决定， 辅 助辐射条 2 只起到扩展阻抗匹配频带宽度的作用， 因此， 可以将辅助辐 射条 2布设在距离喇叭 4较近的位置。 Since the performance of the antenna is mainly determined by the position and shape and structure of the main radiating strip 1, the auxiliary radiating strip 2 only functions to expand the impedance matching frequency band. Therefore, the auxiliary radiating strip 2 can be disposed closer to the speaker 4. .
为了保证天线在 GSM/DCS/PCS频段都可以能够正常工作， 天线的主 辐射条 1与辅助辐射条 2之间只留对应可容许的辐射效率最低门限值 30% 的空隙 （该空隙数值对应 GSM工作频段约为 lmni左右）。 在建模时， 天 线的辅助辐射条 1 只取最窄宽度以满足频带宽度要求， 并连接于手机的 馈电点处。
在对天线完成建模后， 仿真比较各种形状下， 天线主辐射条 1上的 电流分布、 电场分布、 能量传送效率、 天线增益等关键特征及参数， 从 而找到可以同时满足天线分布面积最小且天线辐射效率等于所迷最低门 限值 30%的天线形状。 In order to ensure that the antenna can work normally in the GSM/DCS/PCS frequency band, only the gap corresponding to the minimum allowable radiation efficiency threshold of 30% is left between the main radiating strip 1 and the auxiliary radiating strip 2 of the antenna (the gap value corresponds to The GSM operating frequency band is about lmni). When modeling, the auxiliary radiation strip 1 of the antenna takes only the narrowest width to meet the bandwidth requirement and is connected to the feeding point of the mobile phone. After modeling the antenna, the simulation compares the key characteristics and parameters such as current distribution, electric field distribution, energy transmission efficiency, and antenna gain on the main radiating strip 1 of the antenna under various shapes, so as to find that the antenna distribution area can be minimized at the same time. The antenna radiation efficiency is equal to the antenna shape of the lowest threshold of 30%.
至此， 就得到了可以同时满足分布面积最小且辐射效率不低于 30% 的手机天线。 At this point, a mobile phone antenna that can simultaneously satisfy the minimum distribution area and a radiation efficiency of not less than 30% is obtained.
由于天线主辐射条 1 宽度与天线高次模有关系， 宽度越大则高次模 越多， 因此控制天线主辐射条 1宽度使天线只辐射 GSM/DCS/PCS频段内 所需模式， 是提高天线辐射效率的办法之一； 另外， 在不增大主辐射条 1 宽度的条件下， 增大天线覆盖面积可以增大电流分布面积， 增加天线辐 射能量和达到全方向辐射的效果。 因此， 为了进一步提高手机天线的辐 射效率， 还可以对手机天线进行进一步优化， 根据所需要达到的天线性 能调整天线主辐射条 1的宽度、 辅助辐射条 2的宽度以及所述两辐射条 之间的间隔空隙， 从而确定优化后的天线形状。 Since the width of the main radiating strip 1 of the antenna is related to the higher-order mode of the antenna, the larger the width, the more the higher-order mode. Therefore, controlling the width of the main radiating strip 1 of the antenna causes the antenna to radiate only the required mode in the GSM/DCS/PCS band, which is an improvement. One of the methods of antenna radiation efficiency; in addition, without increasing the width of the main radiating strip 1, increasing the antenna coverage area can increase the current distribution area, increase the antenna radiation energy and achieve the effect of omnidirectional radiation. Therefore, in order to further improve the radiation efficiency of the mobile phone antenna, the mobile phone antenna can be further optimized, and the width of the main radiating strip 1 of the antenna, the width of the auxiliary radiating strip 2, and the between the two radiating strips can be adjusted according to the required antenna performance. The gaps are spaced to determine the optimized antenna shape.
在应用本发明方法提高天线辐射性能的过程中， 如果将天线主辐射 条 1集中布设在手机的一侧， 则主辐射条 1的非对称性将造成天线的辐 射方向图出现非对称性， 因此在对天线进行建模的时候， 还应当尽量将 天线的主辐射条 1 布设在手机的顶部中间位置以达到天线辐射方向图对 称的目的。 In the process of applying the method of the present invention to improve the radiation performance of the antenna, if the antenna main radiating strip 1 is concentrated on one side of the mobile phone, the asymmetry of the main radiating strip 1 will cause the radiation pattern of the antenna to be asymmetrical, When modeling the antenna, the main radiating strip 1 of the antenna should also be placed in the middle of the top of the mobile phone to achieve the purpose of symmetry of the radiation pattern of the antenna.
如图 1 所示， 应用本发明的方法优化后得到的、 可以在 GSM900/DCS/PCS 三频段工作的、 极端小分布面积状态下的天线， 其分布 面积约为 22 X 18平方毫米， 所占体积仅为 2. 8立方厘米， 远小于现有文 献报道的最小天线体积值 4. 2立方厘米。 在 GSM频段， 该天线的辐射效 率在 30%与 45%之间； 在 DCS/PCS频段， 该天线的辐射效率在 35%与 70% 之间， 上述辐射效率均超过了手机射频性能参数的最低门限值 30%的要 求。 As shown in FIG. 1 , an antenna with an extremely small distribution area that can be optimized in the GSM900/DCS/PCS tri-band, which is optimized by the method of the present invention, has a distribution area of about 22×18 square millimeters. 2立方厘米。 The volume is only 2. 8 cubic centimeters, much smaller than the minimum reported in the literature reported that the minimum antenna volume value of 4. 2 cubic centimeters. In the GSM band, the radiation efficiency of the antenna is between 30% and 45%; in the DCS/PCS band, the radiation efficiency of the antenna is between 35% and 70%, and the above radiation efficiency exceeds the minimum of the RF performance parameters of the mobile phone. The threshold is 30%.
通过使用本发明的优化方法， 同时解决了天线辐射效率高与天线尺 寸小， 天线辐射面积最小化与天线辐射方向图最优化之间的矛盾， 有效 地提高了天线辐射效率和增益并改善了手机性能。
本领域技术人员可以理解： 在不背离本发明广义范围的前提下， 可 以对上述实施例进行改动。 因而， 本发明并不仅限于所公开的特定实施 例， 其范围应当涵盖所附权利要求书限定的本发明核心及保护范围内的 所有变化。
By using the optimization method of the invention, the contradiction between the antenna radiation efficiency and the antenna size is small, the antenna radiation area is minimized and the antenna radiation pattern is optimized, the antenna radiation efficiency and gain are effectively improved, and the mobile phone is improved. performance. It will be appreciated by those skilled in the art that the above-described embodiments may be modified without departing from the scope of the invention. Therefore, the invention is not limited to the specific embodiments disclosed, and the scope of the invention should be
Claims
1. 一种提高手机天线辐射效率的方法， 其特征在于， 该方法主要包 括以下几个步骤： A method for improving the radiation efficiency of a mobile phone antenna, characterized in that the method mainly comprises the following steps:
( 1 )对天线附近喇叭中的铁磁物质及铁环、 摄像头介盾、 天线区域 附近的金属环、 天线覆盖区域下的射频接口件、 音频接口件进行建模； (1) Modeling the ferromagnetic material and the iron ring in the speaker near the antenna, the camera shield, the metal ring near the antenna area, the RF interface member under the antenna coverage area, and the audio interface device;
( 2 )对天线进行建模， 将天线主辐射条共形地布设在远离手机喇叭 中的铁磁物质及铁环且围绕摄像头介质切割孔的位置， 将手机天线中的 辅助辐射条布设在靠近手机喇叭中的铁磁物盾及铁环且距离所述主辐射 条预定间隔空隙的位置； (2) Modeling the antenna, and arranging the main radiating strip of the antenna in a shape away from the ferromagnetic material and the iron ring in the mobile phone speaker and surrounding the cutting hole of the camera medium, and arranging the auxiliary radiation strip in the mobile phone antenna close to a ferromagnetic shield and a hoop in the handset speaker and a predetermined distance from the main radiator strip;
( 3 )通过仿真调试确定可以同时满足天线分布面积最小且天线辐射 效率等于一最低门限值的天线形状。 (3) It is determined by simulation debugging that the shape of the antenna that can satisfy the minimum antenna distribution area and the antenna radiation efficiency is equal to a minimum threshold value is simultaneously satisfied.
2.如权利要求 1所述的提高手机天线辐射效率的方法，其特征在于， 在步骤（ 3 )之后， 还包括根据所需要达到的天线性能调整主辐射条的宽 度、 辅助辐射条的宽度以及所述两辐射条之间的间隔空隙， 从而确定优 化后的天线形状的步骤。 2 . The method of claim 1 , further comprising, after step ( 3 ), adjusting a width of the main radiation strip, a width of the auxiliary radiation strip, and a width of the auxiliary radiation strip according to the required antenna performance. The step of spacing the gap between the two strips to determine the shape of the optimized antenna.
3. 如前述权利要求 1或 2所述的提高手机天线辐射效率的方法， 其 特征在于， 将主辐射条布设在手机的顶部中间位置。
3. A method of increasing the radiation efficiency of a cell phone antenna according to claim 1 or 2, characterized in that the main radiating strip is arranged at the top intermediate position of the handset.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2006/002371 WO2008031276A1 (en) | 2006-09-13 | 2006-09-13 | A method for raising the radiating efficiency of the antenna of mobile telephone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2006/002371 WO2008031276A1 (en) | 2006-09-13 | 2006-09-13 | A method for raising the radiating efficiency of the antenna of mobile telephone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2008031276A1 true WO2008031276A1 (en) | 2008-03-20 |
Family
ID=39183359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2006/002371 WO2008031276A1 (en) | 2006-09-13 | 2006-09-13 | A method for raising the radiating efficiency of the antenna of mobile telephone |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2008031276A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110994134A (en) * | 2019-12-19 | 2020-04-10 | 深圳市信维通信股份有限公司 | Antenna structure and mobile terminal |
| CN112257245A (en) * | 2020-10-16 | 2021-01-22 | 昆山睿翔讯通通信技术有限公司 | Mobile phone antenna and design method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2476881Y (en) * | 2000-12-30 | 2002-02-13 | 深圳市中兴通讯股份有限公司 | Built-in planar aerial for mobile phone |
| CN1405675A (en) * | 2002-10-31 | 2003-03-26 | 西安海天天线科技股份有限公司 | Base-station antenna analysing method |
| EP1580838A1 (en) * | 2004-03-22 | 2005-09-28 | Sony Ericsson Mobile Communications AB | Raising antenna efficiency for a portable communication device |
| US20050225487A1 (en) * | 2004-04-08 | 2005-10-13 | Fujitsu Limited | Portable terminal apparatus |
-
2006
- 2006-09-13 WO PCT/CN2006/002371 patent/WO2008031276A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2476881Y (en) * | 2000-12-30 | 2002-02-13 | 深圳市中兴通讯股份有限公司 | Built-in planar aerial for mobile phone |
| CN1405675A (en) * | 2002-10-31 | 2003-03-26 | 西安海天天线科技股份有限公司 | Base-station antenna analysing method |
| EP1580838A1 (en) * | 2004-03-22 | 2005-09-28 | Sony Ericsson Mobile Communications AB | Raising antenna efficiency for a portable communication device |
| US20050225487A1 (en) * | 2004-04-08 | 2005-10-13 | Fujitsu Limited | Portable terminal apparatus |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110994134A (en) * | 2019-12-19 | 2020-04-10 | 深圳市信维通信股份有限公司 | Antenna structure and mobile terminal |
| CN112257245A (en) * | 2020-10-16 | 2021-01-22 | 昆山睿翔讯通通信技术有限公司 | Mobile phone antenna and design method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Stanley et al. | A novel reconfigurable metal rim integrated open slot antenna for octa-band smartphone applications | |
| Deng et al. | MIMO mobile handset antenna merging characteristic modes for increased bandwidth | |
| Ban et al. | A dual-loop antenna design for hepta-band WWAN/LTE metal-rimmed smartphone applications | |
| JP5002598B2 (en) | Multiband antenna | |
| Deng et al. | TCM-based bezel antenna design with small ground clearance for mobile terminals | |
| US8754814B2 (en) | Antenna for multi mode MIMO communication in handheld devices | |
| JP6008352B2 (en) | Multi-mode broadband antenna module and wireless terminal | |
| US20090273529A1 (en) | Multiple antenna arrangement | |
| Deng et al. | A novel low-profile hepta-band handset antenna using modes controlling method | |
| US8259021B2 (en) | Electromagnetic radiation apparatus and method for forming the same | |
| CN103247850A (en) | Antenna suitable for handheld mobile communication terminal with metal outer frame | |
| Luomaniemi et al. | Designing hand-immune handset antennas with adaptive excitation and characteristic modes | |
| Kim et al. | Design of a compact tri-band PIFA based on independent control of the resonant frequencies | |
| Ji et al. | Low mutual coupling design for 5G MIMO antennas using multi-feed technology and its application on metal-rimmed mobile phones | |
| US20110156972A1 (en) | Loop resonator apparatus and methods for enhanced field control | |
| Chiu et al. | A meandered loop antenna for LTE/WWAN operations in a smart phone | |
| Qiu et al. | Low-profile compact antenna for octa-band metal-rimmed mobile phone applications | |
| CA2776339A1 (en) | Antenna for multi mode mimo communication in handheld devices | |
| CN112768875B (en) | Electronic equipment | |
| Ali et al. | Design and analysis of an R-shaped dual-band planar inverted-F antenna for vehicular applications | |
| Stanley et al. | LTE MIMO antenna using unbroken metallic rim and non resonant CCE element | |
| WO2008031276A1 (en) | A method for raising the radiating efficiency of the antenna of mobile telephone | |
| CN201853809U (en) | Ringlike multiband aerial and wireless communication device thereof | |
| Zhong et al. | Biplanar monopole with DSPSL feed and coupling line for broadband mobile phone | |
| Yang et al. | A reconfigurable LTE full-band antenna for smartphones with high screen-to-body ratio |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 06790979 Country of ref document: EP Kind code of ref document: A1 |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| 32PN | Ep: public notification in the ep bulletin as address of the adressee cannot be established |
Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC OF 25-06-2009 |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 06790979 Country of ref document: EP Kind code of ref document: A1 |