CN105226386A - Circularly polarized antenna structure for mobile terminal and mobile terminal - Google Patents

Circularly polarized antenna structure for mobile terminal and mobile terminal Download PDF

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Publication number
CN105226386A
CN105226386A CN201510613830.6A CN201510613830A CN105226386A CN 105226386 A CN105226386 A CN 105226386A CN 201510613830 A CN201510613830 A CN 201510613830A CN 105226386 A CN105226386 A CN 105226386A
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China
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line
mobile terminal
circularly polarized
slot line
polarized antenna
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CN201510613830.6A
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Chinese (zh)
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张大印
周昌文
刘红星
林规
母明
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深圳市万普拉斯科技有限公司
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Priority to CN201510613830.6A priority Critical patent/CN105226386A/en
Publication of CN105226386A publication Critical patent/CN105226386A/en

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Abstract

The invention relates to a circularly polarized antenna structure for a mobile terminal. A first trough line and a second trough line are arranged on a metal floor, namely the first trough line and the second trough line are taken as antenna patterns, so that a traditional antenna pattern can be replaced with the first trough line and the second trough line; and a circularly polarized antenna is achieved by combining with a feeding port, a microstrip transmission line and a dielectric layer. The traditional antenna assemblies are reduced; and the size of the circularly polarized antenna is reduced, so that the effect of optimizing the space of the mobile terminal is achieved; the application scene of the circularly polarized antenna is relatively wide; and meanwhile, the receiving and transmitting properties of a global position system (GPS) can also be improved by the circularly polarized antenna. In addition, the invention further provides the mobile terminal.

Description

移动终端的圆极化天线结构及移动终端 Circularly polarized antenna structure of the mobile terminal and the mobile terminal

技术领域 FIELD

[0001] 本发明涉及天线结构,特别是涉及一种空间优化的移动终端的圆极化天线结构及移动终端。 [0001] The present invention relates to an antenna structure, particularly to a structure of a circularly polarized antenna and a mobile terminal to optimize the space of the mobile terminal.

背景技术 Background technique

[0002] 现有移动终端的GPS天线多为线极化,而GPS通信的理想条件是圆极化,当无线电波的极化面与大地法线面之间的夹角从O〜360°周期的变化,即电场大小不变,方向随时间变化,电场矢量末端的轨迹在垂直于传播方向的平面上投影是一个圆时,称为圆极化。 GPS antenna [0002] The existing mobile terminal mostly linear polarization, and the ideal conditions of the GPS communication is circularly polarized, when the angle between the normal line and the ground plane of polarization of radio waves from the cycle O~360 ° changes, i.e. constant electric field magnitude, the direction of change over time, the end of the trajectory of the electric field vector in a plane perpendicular to the propagation direction of the projection is a circle, called a circular polarization. 而电场矢量在空间的取向固定不变的电磁波叫线极化。 And the electric field vector oriented in a fixed space is called linearly polarized wave. 因此,相比于线极化,理论上圆极化GPS天线比线极化GPS天线接收信号强度强。 Thus, compared to the linear polarization, circularly polarized signal intensity theoretically GPS antenna receives GPS antenna compared to linear polarization. 但是由于移动终端的小型化和成本控制等因素,对圆极化天线的大小要求较高。 However, due to downsizing and cost control factors of the mobile terminal, the size requirements for higher circularly polarized antenna.

发明内容 SUMMARY

[0003] 基于此,有必要提供一种空间优化的移动终端的圆极化天线结构。 [0003] Based on this, it is necessary to provide a structure of a circularly polarized antenna space optimization of the mobile terminal.

[0004] —种移动终端的圆极化天线结构,包括馈电端口、微带传输线、介质层及设于金属地板上的第一槽线和第二槽线; [0004] - species circularly polarized antenna structure of a mobile terminal, comprising a feed port, a microstrip transmission line, a slot line and the first dielectric layer on the metal floor and a second groove provided in the line;

[0005] 所述介质层与所述金属地板层叠设置;所述微带传输线设置于所述介质层远离所述金属地板的一面;所述微带传输线包括三段连接线,三段连接线汇集于一点,所述微带传输线的三段连接线的三自由端中的两自由端分别与所述第一槽线、所述第二槽线耦合连接,另一个自由端连接所述馈电端口;所述第一槽线和所述第二槽线分别沿所述金属地板相邻两边各自的长度方向延伸,且所述第一槽线与所述第二槽线不相交,所述第一槽线与所述第二槽线不超出所述金属地板的长度;所述微带传输线与所述金属边框连接的两端投影于金属地板后、分别与所述第一槽线和所述第二槽线相交。 [0005] The dielectric layer and the metal floor stacked; a microstrip transmission line disposed on one surface of the dielectric layer away from the metal floor; said microstrip transmission line comprises three sections of cable, cables together three sections in that the free ends of the three free ends of the microstrip transmission lines connecting three sections of respectively said first slot line, the second slot line coupling connected, the other free end of the feed port ; said first slot and said second slot line respectively along a line extending on both sides of the metal floor adjacent to a respective longitudinal direction, and the first slot line and the second slot line does not intersect the first slot line and the second slot line does not exceed the length of the metal floor; projection ends of the microstrip transmission line is connected to the metal frame of the metal to the floor, with said first and said second slot line two slot lines intersect.

[0006] 在其中一个实施例中,所述介质层采用印刷电路板的方式印刷于所述金属地板上。 [0006] In one embodiment, the printed circuit board using the embodiment printed on the metal floor of the dielectric layer.

[0007] 在其中一个实施例中,所述第一槽线大体为矩形,所述第一槽线的长宽比大于10:1 ; [0007] In one embodiment, the first groove line is substantially rectangular, the aspect ratio of the first groove line is larger than 10: 1;

[0008] 所述第二槽线大体为矩形,所述第二槽线的长宽比大于10:1。 [0008] The second slot line is substantially rectangular, the aspect ratio of the second groove line is larger than 10: 1.

[0009] 在其中一个实施例中,所述第一槽线或第二槽线的长度由移动终端工作频段决定。 [0009] In one embodiment, the length of the first slot line or the second slot line frequency is determined by the mobile terminal work.

[0010] 在其中一个实施例中,所述第一槽线的长度大于第二槽线的长度,所述第一槽线与所述第二槽线的长度差在5 %以内。 [0010] In one embodiment, the length of the first groove line is larger than the length of the second slot line, slot line length difference between the first and the second slot line is within 5%.

[0011] 在其中一个实施例中,所述微带传输线与所述馈电端口连接的一端的阻抗为50±5Ω ;所述微带传输线与所述金属边框的相邻两边连接的两端阻抗均为100±10Ω。 [0011] In one embodiment, the microstrip transmission line at one end of the electrical impedance of the feed port is 50 ± 5Ω; ends of the microstrip transmission line and the adjacent sides of the metal frame connected to the impedance were 100 ± 10Ω.

[0012] 在其中一个实施例中,所述微带传输线与所述金属边框相邻两边连接的两端为直线、曲线、矩形、圆形、十字形、三角形、扇形或半圆形。 [0012] In one embodiment, the microstrip transmission line is connected at both ends on both sides of the metal frame adjacent a straight line, curved, rectangular, circular, cross-shaped, triangular, or semicircular sector.

[0013] 在其中一个实施例中,所述微带传输线的三段连接线为直线或曲线。 [0013] In one embodiment, the microstrip transmission lines connecting three sections of straight or curved.

[0014] 在其中一个实施例中,还包括匹配网络,所述匹配网络用于连接所述馈电端口及所述微带传输线。 [0014] In one embodiment, further comprising a matching network, the matching circuit and the microstrip transmission line ports for connection to the feed network.

[0015] 此外还提供一种空间优化的移动终端。 [0015] In addition, to provide a space-optimized mobile terminals.

[0016] 一种移动终端包括上述天线结构。 [0016] A mobile terminal comprising the antenna structure.

[0017] 上述移动终端的圆极化天线结构及移动终端通过在金属地板上设置第一槽线和第二槽线,即将第一槽线和第二槽线作为天线图案,因而第一槽线和第二槽线能够代替传统的天线图案,再结合馈电端口、微带传输线及介质层实现圆极化天线。 [0017] The circularly polarized antenna structure of the mobile terminal and a mobile terminal by providing a first slot line and a second line on the metal floor grooves, i.e. the first slot line and a second slot line pattern as an antenna, so that the first slot line and a second slot line capable of replacing a conventional antenna pattern, combined with a feed port, a microstrip transmission line and the dielectric layer to achieve a circularly polarized antenna. 因此,减少了传统的天线组件,减小的圆极化天线的体积,从而实现了优化移动终端空间的效果,使得圆极化天线的应用场景更为广泛,同时圆极化天线也能够提高GPS的收发性能。 Accordingly, conventional antenna assembly is reduced, reducing the volume of the circularly polarized antenna, thereby achieving the effect of optimization of the space of the mobile terminal, so that the circularly polarized antenna scenario wider, while a circularly polarized antenna can be improved GPS transceiver performance.

附图说明 BRIEF DESCRIPTION

[0018] 图1为移动终端的圆极化天线结构的示意图之一; One schematic configuration of a circularly polarized antenna of the mobile terminal [0018] FIG 1;

[0019] 图2为移动终端的圆极化天线结构的层叠示意图; [0019] Fig 2 a schematic view of a laminated structure of the circularly polarized antenna of the mobile terminal;

[0020] 图3为移动终端的圆极化天线结构的示意图之二; [0020] FIG. 3 is a schematic of two circular polarization of the antenna structure of the mobile terminal;

[0021] 图4为移动终端的圆极化天线结构的示意图之三; [0021] FIG. 4 is a schematic ter circularly polarized antenna structure of the mobile terminal;

[0022] 图5为移动终端的圆极化天线结构的示意图之四; [0022] FIG. 5 is a circularly polarized antenna structure schematic view of the four mobile terminals;

[0023] 图6为移动终端的圆极化天线结构的示意图之五; [0023] FIG. 6 is a schematic diagram of a configuration of five circularly polarized antenna of the mobile terminal;

[0024] 图7为移动终端的圆极化天线结构的示意图之六; [0024] FIG. 7 is a schematic of a configuration of six circularly polarized antenna of the mobile terminal;

[0025] 图8为移动终端的圆极化天线结构的示意图之七; [0025] FIG. 8 is a schematic diagram of a configuration of seven circularly polarized antenna of the mobile terminal;

[0026] 图9为馈电端口的频率响应图; [0026] FIG. 9 is a frequency response diagram of the feed port;

[0027] 图10为圆极化天线结构的球坐标系轴比示意图。 [0027] FIG. 10 is a spherical coordinate system axes circularly polarized antenna structures than FIG.

具体实施方式 Detailed ways

[0028] 为了便于理解本发明,下面将参照相关附图对本发明进行更全面的描述。 [0028] To facilitate understanding of the present invention, with reference to the following drawings related to the present invention will be more fully described. 附图中给出了本发明的较佳的实施例。 It gives the preferred embodiments of the invention in the drawings. 但是,本发明可以以许多不同的形式来实现,并不限于本文所描述的实施例。 However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. 相反地,提供这些实施例的目的是使对本发明的公开内容的理解更加透彻全面。 Rather, these embodiments of the object is to be understood that the present disclosure more comprehensible comprehensive.

[0029] 需要说明的是,当元件被称为“固定于”另一个元件,它可以直接在另一个元件上或者也可以存在居中的元件。 [0029] Incidentally, when an element is referred to as being "fixed", which may or may present centering element directly to the other element. 当一个元件被认为是“连接”另一个元件,它可以是直接连接到另一个元件或者可能同时存在居中元件。 When an element is regarded as being "connected", it can be directly connected to another element or intervening elements may be present simultaneously. 本文所使用的术语“垂直的”、“水平的”、“左”、“右”以及类似的表述只是为了说明的目的。 As used herein, the term "vertical", "horizontal", "left", "right" and similar expressions are merely for illustrative purposes.

[0030] 除非另有定义,本文所使用的所有的技术和科学术语与属于本发明的技术领域的技术人员通常理解的含义相同。 [0030] Unless defined otherwise, the same meaning as all technical and scientific terms and belongs to the technical field of the invention As used herein, the art is generally understood. 本文中在本发明的说明书中所使用的术语只是为了描述具体的实施例的目的,不是旨在于限制本发明。 In the description herein, the terms used in the present invention only for the purposes of describing particular embodiments and are not intended to limit the invention. 本文所使用的术语“及/或”包括一个或多个相关的所列项目的任意的和所有的组合。 As used herein, the term "and / or" includes any one or more of the associated listed items and all combinations thereof.

[0031] 如图1所示,为移动终端的圆极化天线结构的示意图之一。 [0031] As shown in FIG. 1, a schematic view of one configuration of a circularly polarized antenna of the mobile terminal.

[0032] 在一个实施例中,一种移动终端的圆极化天线结构,包括馈电端口104、微带传输线103、介质层200及设于金属地板100上的第一槽线101和第二槽线102。 [0032] In one embodiment, the circularly polarized antenna structure of a mobile terminal, comprising a feed port 104, 103, dielectric layer 200 and the microstrip transmission line disposed on the metal floor of the first slot line 101 and the second 100 slot line 102.

[0033] 介质层200与金属地板100层叠设置;微带传输线103与金属地板100分设于介质层200的两面;微带传输线103包括三段连接线,三段连接线汇集于一点,为Y型,微带传输线103的三段连接线的三自由端中的两自由端分别与第一槽线101、所述第二槽线102耦合连接,另一个自由端连接馈电端口104 ;第一槽线101和第二槽线102分别沿金属地板100相邻两边各自的长度方向延伸,且第一槽线101与第二槽线102不相交,第一槽线101与第二槽线102不超出金属地板100的长度;微带传输线103与第一槽线101及第二槽线102耦合连接的两端投影于金属地板100后,分别与第一槽线101和第二槽线102相交。 [0033] The dielectric layer 200 and the metal floor 100 stacked; microstrip transmission line 103 and the metal floor 100 is divided on both sides of dielectric layer 200; microstrip transmission line 103 comprises three sections connected lines, three segments connecting lines together at one point, Y-shaped , the free end of the two free ends of three three sections of microstrip transmission line cable 103 in line with the first groove 101, the second slot line coupling 102 is connected, the other free end is connected to feed port 104; a first slot line 101 and the second slot line 102, respectively, extending along respective longitudinal direction of the metal on both sides adjacent to floor 100 and the first slot line 101 and the second slot line 102 does not intersect the first slot line 101 and the second slot line 102 is not exceeded the length of the metal floor 100; 103 a microstrip transmission line coupled to the first slot line 101 and the second slot line 102 is connected at both ends to the metal floor of the projection 100, 101 intersects the first slot line and a second slot line 102, respectively.

[0034] 由于第一槽线101和第二槽线102均在金属地板100上,实际上为在金属地板100上挖空形成第一槽线101和第二槽线102。 [0034] Since the first slot line 101 and the second slot line 102 on the metal floor 100 are, in fact, is hollowed out on the metal floor of the first groove 100 is formed a second slot line 101 and line 102. 第一槽线101和第二槽线102不相交,但两者的延长线正交(垂直)。 The first slot line 101 and the second slot line 102 do not intersect, but both an extension line normal (perpendicular). 第一槽线101和第二槽线102分别沿金属地板100相邻两边设置,并分别与金属地板100的两边平行设置。 The first slot line 101 and the second slot line 102, respectively, along both sides of the metal floor 100 disposed adjacent to, and parallel with each floor 100 is provided on both sides of the metal. 即将第一槽线101和第二槽线102作为天线图案。 Coming first slot line 101 and the second slot line 102 as the antenna pattern. 具体地,可以沿金属地板100的两个相互垂直的侧边的边缘开设第一槽线101和第二槽线102。 Specifically, line 101 defines a first slot and a second slot line 102 along an edge 100 of the metal floor two mutually perpendicular sides.

[0035] 因此,由于第一槽线101与第二槽线102设置于金属地板100上,并未增加天线结构中的元器件,反而是减少了天线结构中的元器件,同时配合馈电端口104、微带传输线103及金属地板100,使得圆极化天线结构不仅能够完成圆极化天线的功能,同时还能够提高GPS的收发功能。 [0035] Accordingly, since the first slot line 101 and the second slot line 102 is disposed on the metal floor 100, no increase of the components in the antenna structure, the antenna structure is to decrease the components in conjunction with a feed port 104, 103 and the microstrip transmission line metal floor 100, the circularly polarized antenna structure such that not only fulfill the functions of the circularly polarized antenna, a transceiver can be enhanced while the GPS function.

[0036] 在一个实施例中,第一槽线101大体为矩形,第一槽线101的长宽比大于10:1。 [0036] In one embodiment, the first slot line 101 is substantially rectangular, the aspect ratio of the first slot line 101 is greater than 10: 1. 第二槽线101大体为矩形,第二槽线102的长宽比大于10:1。 The second slot line 101 is substantially rectangular, the aspect ratio of the second slot line 102 is greater than 10: 1.

[0037] 第一槽线101或第二槽线102的长度由移动终端工作频段决定。 [0037] The first slot line 101 or the second slot length 102 is determined by a mobile terminal operating band. 第一槽线101或第二槽线102的长度方向可以为沿金属地板100的侧边延伸方向。 The first slot line 101 or the longitudinal direction of the second slot line 102 may be along the side of the metal floor 100 extends.

[0038] 第一槽线101的长度大于第二槽线102的长度,第一槽线101与第二槽线102的长度差在5%以内。 [0038] The length of the first slot line 101 is greater than the length of the second slot line 102, the length difference between the first slot line 101 and the second slot line 102 is within 5%.

[0039] 第一槽线101与第二槽线102的长度根据圆极化GPS天线的工作频段1.575GHz作为参考,一般为第一槽线101、第二槽线102在介质层200和金属地板100存在情况的导波波长的半波长。 [0039] The first slot line 101 and the length of the second slot line 102 according to the operating frequency of 1.575GHz circularly polarized GPS antenna as a reference, typically a first slot line 101, a dielectric layer 102 and the metal floor 200 in the second slot line the presence of the wave guide 100 is a half wavelength long. 第一槽线101略长于第二槽线102,两者的长度差在5%以内为佳。 The first slot line 101 is slightly longer than the second slot line 102, the difference in length between the two preferably within 5%.

[0040] 在一个实施例中,微带传输线103指输送电磁能的线状结构的设备。 [0040] In one embodiment, a microstrip transmission line device 103 refers to the delivery of electromagnetic energy linear structure. 它是电信系统的重要组成部分,用来把载有信息的电磁波,沿着微带传输线103规定的路由自一点输送到另一点。 It is an important part of a telecommunications system for the electromagnetic waves carrying information, the microstrip transmission line 103 along a predetermined route from the delivery point to another point. 在本实施例中,微带传输线103是将馈电端口104的信号传输到第一槽线101和第二槽线102。 In the present embodiment, the microstrip transmission line 103 is transmitting a signal to the power feeding port 104 of the first slot line 101 and the second slot line 102.

[0041] 微带传输线103与馈电端口104连接的一端的阻抗为50±5 Ω ;优选地,微带传输线103与馈电端口104连接的一端的阻抗为50 Ω。 [0041] One end of the impedance of the microstrip transmission line 103 and feed port 104 is connected to 50 ± 5 Ω; end impedance Preferably, the microstrip transmission line 103 connected to the feed port 104 is 50 Ω. 微带传输线103与所述金属边框的相邻两边连接的两端阻抗均为100±10Ω。 Both ends of the microstrip transmission line 103 connected to the adjacent sides of the metal frame are impedance 100 ± 10Ω. 优选地,微带传输线103连接金属边框的两端的阻抗为100 Ω O The metal frame is connected across the impedance Preferably, the microstrip transmission line 103 is 100 Ω O

[0042] 微带传输线103与金属边框相连接的两端分别跨过第一槽线101和第二槽线,即微带传输线103在金属地板100上的投影分别与第一槽线101和第二槽线102相交。 [0042] The microstrip transmission line at both ends of the metal frame 103 are connected across the first slot line and a second slot line 101, i.e., microstrip transmission line 103 on the metal floor of the projection 100 with the first slot line 101 and the second line 102 intersects the second groove.

[0043] 微带传输线103大体为Y型,其三自由端中的两自由端分别与第一槽线101、第二槽线102耦合连接,另一个自由端连接馈电端口104。 [0043] The microstrip line 103 is substantially Y-shaped, the free ends thereof three free ends of the first slot line 101, respectively, coupled to the second slot line 102 is connected to the free end of the other feed port 104.

[0044] 请结合图3-8。 [0044] Please 3-8 in conjunction with FIG.

[0045] 微带传输线103与金属边框相邻两边连接的两端点形状可变。 [0045] The microstrip transmission line 103 and a variable spot shape of the metal frame on both sides of both ends of the connector adjacent.

[0046] 具体的,微带传输线103与金属边框相邻两边连接的两端为直线、曲线、矩形、圆形、十字形、三角形、扇形或半圆形。 [0046] Specifically, both sides of both ends of the microstrip transmission line 103 connected to the adjacent metal frame is straight, curved, rectangular, circular, cross-shaped, triangular, or semicircular sector.

[0047]同时,微带传输线103本身线条形状可变,微带传输线103的三段连接线为直线或曲线。 [0047] Meanwhile, the shape of the line 103 a microstrip transmission line itself variable, three sections of microstrip transmission line connected to line 103 is a straight line or curve.

[0048] 馈电端口104为射频输入馈电端口,用于收发信号。 [0048] RF feed port 104 to the input feed port, for transmitting and receiving signals.

[0049] 介质层200采用印刷电路板的方式印刷于所述金属地板100上。 The printed circuit board 200 using the embodiment [0049] The dielectric layer is printed on the metal floor 100.

[0050] 请结合图2。 [0050] Please conjunction with FIG. 介质层200层叠设置在金属地板100 —面后,微带传输线103沿介质层200远离金属地板100的一面延伸并分别连接金属边框相邻的两边和馈电端口104。 A dielectric layer 200 stacked on the metal floor 100 - When surface, a microstrip transmission line dielectric layer 103 along the side 200 extending away from the metal floor 100 and are connected to two adjacent sides of the metal frame and the feed port 104.

[0051] 移动终端的圆极化天线结构还包括匹配网络,所述匹配网络用于连接所述馈电端口104及所述微带传输线103。 [0051] The circularly polarized antenna structure of the mobile terminal further comprises a matching network, the matching network for the transmission line connecting the feeding port 104 and the microstrip 103. 匹配网络用于馈电端口104与移动终端之间的匹配。 Matching network for matching between the feeding port 104 of the mobile terminal. 匹配网络还用于第一槽线101、第二槽线102与移动终端之间的共轭匹配。 A first matching network further slot line 101, conjugate match between the second slot line 102 and the mobile terminal. 因而增加匹配网络能够优化圆极化天线结构的性能。 Thus increasing the matching network to optimize the performance of the circular polarized antenna structure.

[0052] 基于上述所有实施例,圆极化是由两路幅度相等、相位差90°、极化方向正交(垂直)的两个线极化组合产生。 [0052] For all of the above-described embodiments, a circularly polarized two equal amplitude, phase difference of 90 °, the polarization direction orthogonal (perpendicular) to produce a combination of two linearly polarized. 因此,第一槽线101与第二槽线102相互垂直,满足极化方向正交(垂直)。 Thus, a first slot line 101 and the second slot line 102 are perpendicular to the direction of polarization meet the normal (perpendicular). 同时,微带传输线103等功率平分给第一槽线101和第二槽线102,从而满足幅度相等。 Meanwhile, like microstrip transmission line 103 to the first groove bisecting the power line 101 and the second slot line 102, to meet the same amplitude. 第一槽线101与第二槽线102长度近似但有差别,长度略长的第一槽线101相位在1.575GHz处超前45°,略短的第二槽线102相位在1.575GHz处滞后45°,因此,第一槽线101和第二槽线102在1.575GHz处相位差90°,满足圆极化产生条件。 The first slot line 101 is approximately 102, but differ from the length of the second slot line, slot line slightly longer first 45 ° phase lead 101 at 1.575GHz, slightly shorter second slot line 102 at 1.575GHz phase lag 45 °, therefore, the first slot line 101 and the second slot line 102 at a phase difference of 90 ° at 1.575GHz, satisfy conditions to produce circular polarization.

[0053] 在本实施例中,圆极化天线结构工作时,馈电端口104的频率响应图如图9所示。 [0053] In embodiments, when the circularly polarized antenna structure work, the frequency response of the feeding port 104 in FIG. 9 in this embodiment. 横轴为频率,单位GHz,纵轴横轴为频率,单位GHz,纵轴为S11,单位dB。 The horizontal axis represents frequency in GHz, the vertical axis and the horizontal axis is the frequency in GHz, vertical axis S11, in dB. 对应GPS工作频段 GPS band corresponds to work

1.575GHzο 1.575GHzο

[0054] 在本实施例中,圆极化天线结构的球坐标系轴比示意图如图10所示,横轴是Theta面角度,单位度,纵轴是轴比,单位dB。 [0054] In the present embodiment, a spherical coordinate system configuration of a circularly polarized antenna axis than the schematic shown in Figure 10, the horizontal axis represents the face angle Theta, in degrees, and the vertical axis is the axial ratio in dB. 在O度,也就是天线的正上方,轴比小于3dB,满足圆极化天线要求。 In the O degree, i.e. immediately above the antenna axial ratio of less than 3dB, satisfy the requirements of the circularly polarized antenna.

[0055] —种移动终端,包括上述所有实施例中的天线结构。 [0055] - a mobile terminal types, including an antenna structure of all of the above embodiments.

[0056] 上述移动终端的圆极化天线结构及移动终端通过在金属地板100上设置第一槽线101和第二槽线102,即将第一槽线101和第二槽线102作为天线图案,因而第一槽线101和第二槽线102能够代替传统的天线图案,再结合馈电端口104、微带传输线103及介质层200实现圆极化天线。 [0056] The circularly polarized antenna structure of the mobile terminal and the mobile terminal 101 by providing the first slot line 102 and the second slot line 100 on the metal floor, i.e. the first slot line 101 and the second slot line 102 as the antenna pattern, so that the first slot line 101 and the second slot line 102 can replace the conventional antenna pattern, combined with the feed port 104, the microstrip transmission line 103 and the dielectric layer 200 to achieve a circularly polarized antenna. 因此,减少了传统的天线组件,减小的圆极化天线的体积,从而实现了优化移动终端空间的效果,使得圆极化天线的应用场景更为广泛,同时圆极化天线也能够提高GPS的收发性能。 Accordingly, conventional antenna assembly is reduced, reducing the volume of the circularly polarized antenna, thereby achieving the effect of optimization of the space of the mobile terminal, so that the circularly polarized antenna scenario wider, while a circularly polarized antenna can be improved GPS transceiver performance.

[0057] 以上所述实施例的各技术特征可以进行任意的组合,为使描述简洁,未对上述实施例中的各个技术特征所有可能的组合都进行描述,然而,只要这些技术特征的组合不存在矛盾,都应当认为是本说明书记载的范围。 [0057] each of the above embodiments of the technical features of any combination can be, for the brevity, not each of the technical features of the embodiments described above are all the possible combinations will be described, however, as long as the combination of these features is not contradiction, they are to be considered in the scope described in this specification.

[0058] 以上所述实施例仅表达了本发明的几种实施方式,其描述较为具体和详细,但并不能因此而理解为对发明专利范围的限制。 [0058] The above embodiments are only expressed several embodiments of the present invention, and detailed description thereof is more specific, but can not therefore be understood to limit the scope of the invention. 应当指出的是,对于本领域的普通技术人员来说,在不脱离本发明构思的前提下,还可以做出若干变形和改进,这些都属于本发明的保护范围。 It should be noted that those of ordinary skill in the art, without departing from the spirit of the present invention, can make various changes and modifications, which fall within the protection scope of the present invention. 因此,本发明专利的保护范围应以所附权利要求为准。 Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1.一种移动终端的圆极化天线结构,其特征在于,包括馈电端口、微带传输线、介质层及设于金属地板上的第一槽线和第二槽线; 所述介质层与所述金属地板层叠设置;所述微带传输线设置于所述介质层远离所述金属地板的一面;所述微带传输线包括三段连接线,三段连接线汇集于一点,所述微带传输线的三段连接线的三自由端中的两自由端分别与所述第一槽线、所述第二槽线耦合连接,另一个自由端连接所述馈电端口;所述第一槽线和所述第二槽线分别沿所述金属地板相邻两边各自的长度方向延伸,且所述第一槽线与所述第二槽线不相交,所述第一槽线与所述第二槽线不超出所述金属地板的长度;所述微带传输线与所述第一槽线及所述第二槽线耦合连接的两端投影于所述金属地板后、分别与所述第一槽线和所述第二槽线相交。 A circularly polarized antenna structure of the mobile terminal, wherein the feed port comprising a microstrip transmission line, and a dielectric layer disposed on the metal floor of the first slot line and a second slot line; and said dielectric layer the stacked metal floor; the microstrip transmission line disposed on said dielectric layer remote from the metal floor side; the three sections comprising a microstrip transmission line cable, three wire segments connected together at one point, the microstrip transmission line the free end of the two free ends of the three sections of three connection lines in the first slot line, slot line coupling said second connector, respectively, the other free end of the feed port; a first slot line and the second slot line respectively extending along both sides of the metal floor adjacent to a respective longitudinal direction, and the first slot line and the second slot line does not intersect said first slot and said second slot line line does not exceed the length of the metal floor; the microstrip transmission line and the first slot line and the slot line coupling said second ends connected to the rear projection of the metal floor, with said first slot line and said second slot line intersect.
2.根据权利要求1所述的移动终端的圆极化天线结构,其特征在于,所述介质层采用印刷电路板的方式印刷于所述金属地板上。 2. The circularly polarized antenna structure of the mobile terminal according to claim 1, characterized in that the printed circuit board using the embodiment printed on the metal floor of the dielectric layer.
3.根据权利要求1所述的移动终端的圆极化天线结构,其特征在于,所述第一槽线大体为矩形,所述第一槽线的长宽比大于10:1; 所述第二槽线大体为矩形,所述第二槽线的长宽比大于10:1。 The circularly polarized antenna structure of the mobile terminal according to claim 1, wherein said first slot line is substantially rectangular, the aspect ratio of the first groove line is larger than 10: 1; the first two wire grooves are generally rectangular, the aspect ratio of the second groove line is larger than 10: 1.
4.根据权利要求1所述的移动终端的圆极化天线结构,其特征在于,所述第一槽线或第二槽线的长度由移动终端工作频段决定。 The circularly polarized antenna structure of the mobile terminal according to claim 1, characterized in that the length of the first slot line or the second slot line frequency is determined by the mobile terminal work.
5.根据权利要求1所述的移动终端的圆极化天线结构,其特征在于,所述第一槽线的长度大于第二槽线的长度,所述第一槽线与所述第二槽线的长度差在5%以内。 The circularly polarized antenna structure of the mobile terminal according to claim 1, characterized in that the length of the first groove line is larger than the length of the second slot line, said first slot line and the second groove line length difference within 5%.
6.根据权利要求1所述的移动终端的圆极化天线结构,其特征在于,所述微带传输线与所述馈电端口连接的一端的阻抗为50±5Ω ;所述微带传输线与所述金属边框的相邻两边连接的两端阻抗均为100 ± 10 Ω。 The circularly polarized antenna structure of the mobile terminal according to claim 1, wherein said microstrip transmission line one end of the impedance connected to the feed port was 50 ± 5Ω; and as the microstrip transmission line connecting both ends of adjacent sides of said metal frame are impedance 100 ± 10 Ω.
7.根据权利要求1所述的移动终端的圆极化天线结构,其特征在于,所述微带传输线与所述金属边框相邻两边连接的两端为直线、曲线、矩形、圆形、十字形、三角形、扇形或半圆形。 The circularly polarized antenna structure of the mobile terminal according to claim 1, wherein said microstrip transmission line and is connected to the metal frame on both sides adjacent both ends of a straight line, curved, rectangular, circular, ten shaped, triangular, or semicircular sector.
8.根据权利要求1所述的移动终端的圆极化天线结构,其特征在于,所述微带传输线的三段连接线为直线或曲线。 8. The circularly polarized antenna structure of the mobile terminal according to claim 1, wherein said three sections of microstrip transmission lines connecting the straight or curved.
9.根据权利要求1所述的移动终端的圆极化天线结构,其特征在于,还包括匹配网络,所述匹配网络用于连接所述馈电端口及所述微带传输线。 9. The circularly polarized antenna structure of the mobile terminal according to claim 1, characterized in that, further comprising a matching network, the matching network is connected to the feed port and the microstrip transmission line.
10.一种移动终端,其特征在于,包括权利要求1-9任意一项所述的天线结构。 10. A mobile terminal, characterized in that the antenna structure according to any one of claims 1-9 comprising a.
CN201510613830.6A 2015-09-23 2015-09-23 Circularly polarized antenna structure for mobile terminal and mobile terminal CN105226386A (en)

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