CN107834166A - A kind of double frequency omnibearing high ferro antenna - Google Patents
A kind of double frequency omnibearing high ferro antenna Download PDFInfo
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/32—Adaptation for use in or on road or rail vehicles
- H01Q1/3208—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- 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
- H01Q5/10—Resonant antennas
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- 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
- H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
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- 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
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- 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
- H01Q5/50—Feeding or matching arrangements for broad-band or multi-band operation
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Abstract
本发明公开了一种双频全向高铁天线，包括天线辐射振子、金属底板和天线外罩，天线辐射振子立于金属底板上，外罩设置在天线辐射振子外，其特征在于，天线辐射振子包括高频辐射枝节、低频辐射枝节、辐射振子馈电部分和辐射振子接地枝节，高频辐射枝节与低频辐射枝节连接，辐射振子馈电部分、辐射振子接地枝节分别连接于低频辐射枝节与金属底板之间，辐射振子低频枝节与金属底板平行，高频辐射枝节包含与金属底板垂直的部分和平行部分。本发明结构简单，具有全向辐射特点。
The invention discloses a dual-frequency omnidirectional high-speed rail antenna, which includes an antenna radiation oscillator, a metal base plate and an antenna cover, the antenna radiation oscillator stands on the metal base plate, and the outer cover is arranged outside the antenna radiation oscillator, and is characterized in that the antenna radiation oscillator includes a high The high-frequency radiation branch, the low-frequency radiation branch, the feeding part of the radiation oscillator and the grounding branch of the radiation oscillator, the high-frequency radiation branch is connected with the low-frequency radiation branch, the feeding part of the radiation oscillator, and the grounding branch of the radiation oscillator are respectively connected between the low-frequency radiation branch and the metal base plate , the low-frequency branch of the radiation oscillator is parallel to the metal base, and the high-frequency radiation branch includes a part perpendicular to the metal bottom and a part parallel to it. The invention has a simple structure and has the characteristics of omnidirectional radiation.
Description
技术领域technical field
本发明涉及移动通信技术领域，特别是一种全向高铁天线。The invention relates to the technical field of mobile communication, in particular to an omnidirectional high-speed rail antenna.
背景技术Background technique
在移动通信技术飞速发展的今天，无线通信已经成为人们日常生活不可或缺的联系方式。另一方面，高铁由于其舒适高速便捷的优点，成为人们中远距离出行的首选交通方式，日前我国的高铁技术全球领先，而在高铁通信技术上，仍然存在一些问题需要解决。在高铁高速运行的状态下，如果仍然利用沿线基站切换来实现无线通信，这很难保证通信的可靠性，正在研究的5G通信技术，也将动中通作为需要实现的核心技术之一。在高铁上采用直放站可以解决如上问题。Today, with the rapid development of mobile communication technology, wireless communication has become an indispensable way of contact in people's daily life. On the other hand, due to its advantages of comfort, high speed and convenience, high-speed rail has become the preferred mode of transportation for people to travel long distances. Recently, my country's high-speed rail technology is leading the world, but there are still some problems to be solved in high-speed rail communication technology. When the high-speed rail is running at high speed, it is difficult to guarantee the reliability of the communication if the base station switching along the line is still used to realize the wireless communication. The 5G communication technology under research also regards mobile communications as one of the core technologies that need to be realized. Using repeaters on high-speed rail can solve the above problems.
在传统的高铁天线中，大都采用定向天线来与沿线基站实现数据交换，这样存在的问题是在信号覆盖弱的方向，通信可靠性降低，存在误码率增高或者掉线的风险。在高速运行中，这种风险会进一步增大，这显然不能满足人们对通信可靠性的要求。Most of the traditional high-speed rail antennas use directional antennas to exchange data with base stations along the line. The problem is that in the direction of weak signal coverage, communication reliability is reduced, and there is a risk of increased bit error rate or dropped calls. In high-speed operation, this risk will further increase, which obviously cannot meet people's requirements for communication reliability.
发明内容Contents of the invention
本发明的目的就是为了解决现有技术之不足而提供的一种制作工艺简单，满足全向覆盖的双频全向高铁天线。The object of the present invention is to provide a dual-frequency omnidirectional high-speed rail antenna with simple manufacturing process and omnidirectional coverage in order to solve the shortcomings of the prior art.
本发明是采用如下技术解决方案来实现上述目的：一种双频全向高铁天线，包括天线辐射振子、金属底板和天线外罩，天线辐射振子立于金属底板上，外罩设置在天线辐射振子外，其特征在于，天线辐射振子包括高频辐射枝节、低频辐射枝节、辐射振子馈电部分和辐射振子接地枝节，高频辐射枝节与低频辐射枝节连接，辐射振子馈电部分、辐射振子接地枝节分别连接于低频辐射枝节与金属底板之间，辐射振子低频枝节与金属底板平行，高频辐射枝节包含与金属底板垂直的部分和平行部分，实现了天线双频段覆盖。The present invention uses the following technical solutions to achieve the above object: a dual-frequency omnidirectional high-speed rail antenna, including an antenna radiation oscillator, a metal base plate and an antenna cover, the antenna radiation oscillator stands on the metal base plate, and the outer cover is arranged outside the antenna radiation oscillator. It is characterized in that the antenna radiation oscillator includes a high-frequency radiation branch, a low-frequency radiation branch, a radiation oscillator feeding part and a radiation oscillator grounding branch, the high-frequency radiation branch is connected to the low-frequency radiation branch, and the radiation oscillator feeding part and the radiation oscillator grounding branch are respectively connected Between the low-frequency radiation branch and the metal base plate, the low-frequency branch of the radiation oscillator is parallel to the metal base plate, and the high-frequency radiation branch includes a part perpendicular to the metal base plate and a parallel part, realizing dual-band coverage of the antenna.
作为上述方案的进一步说明，所述辐射振子馈电部分包括馈电探针和馈电圆弧，可以实现较宽范围阻抗匹配，馈电圆弧的圆弧部分镂空有半圆形孔，可以延长电流路径实现小型化，同时能够减轻天线整体重量。As a further illustration of the above solution, the feeding part of the radiation oscillator includes a feeding probe and a feeding arc, which can achieve a wide range of impedance matching. The arc part of the feeding arc is hollowed out with a semicircular hole, which can be extended The current path can be miniaturized and the overall weight of the antenna can be reduced at the same time.
进一步地，所述辐射振子接地枝节靠近馈电圆弧部分，与金属底板垂直，辐射振子接地枝节的接地点的面积从上往下逐渐增大，加强结构稳定性。Further, the grounding branch of the radiating oscillator is close to the feeding arc and is perpendicular to the metal base plate, and the area of the grounding point of the grounding branch of the radiating oscillator gradually increases from top to bottom, thereby enhancing structural stability.
进一步地，天线辐射振子的边角采用倒圆角处理，倒角半径根据谐振点做微调。Further, the corners of the antenna radiation oscillator are rounded, and the radius of the chamfer is fine-tuned according to the resonance point.
所述天线辐射振子采用一定厚度的金属材料制成，材料可以为铜、铝、合金等。The antenna radiating element is made of a metal material with a certain thickness, and the material may be copper, aluminum, alloy or the like.
所述金属底板的轮廓为两个半圆柱和一个长方体组合而成。The profile of the metal bottom plate is composed of two half cylinders and a cuboid.
本发明采用上述技术解决方案所能达到的有益效果是：The beneficial effect that the present invention can reach by adopting above-mentioned technical solution is:
本发明采用主要由高频辐射枝节、低频辐射枝节、辐射振子馈电部分和辐射振子接地枝节构成的天线辐射振子结构，通过设计具有含有类半圆孔的圆弧形状的馈电枝节，实现了宽带阻抗匹配，并且减轻了天线整体重量，通过设计水平的低频枝节和含垂直部分和水平部分的高频枝节，实现了天线双频段覆盖，通过采用具有一定厚度的金属材质，进一步是实现了阻抗匹配和保证了天线结构可靠性。通过接地点和馈电点合理的位置关系设计，能保证天线的全向辐射；通过对辐射振子边角进行倒角设计，方便加工制作；该天线具有双频段覆盖1300-1500MHz和1620-2000MHz(VSWR＜1.5)，具有全向辐射特点，不圆度小于4dB。The present invention adopts the antenna radiation oscillator structure mainly composed of high-frequency radiation branch, low-frequency radiation branch, radiation oscillator feeding part and radiation oscillator grounding branch, and realizes broadband Impedance matching, and the overall weight of the antenna is reduced. By designing the horizontal low-frequency branch and the high-frequency branch including the vertical part and the horizontal part, the dual-band coverage of the antenna is realized. By using a metal material with a certain thickness, the impedance matching is further realized. And ensure the reliability of the antenna structure. The omnidirectional radiation of the antenna can be guaranteed through the reasonable positional relationship design of the grounding point and the feeding point; through the chamfering design of the corners of the radiation oscillator, it is convenient for processing; the antenna has a dual-band coverage of 1300-1500MHz and 1620-2000MHz ( VSWR<1.5), with omnidirectional radiation characteristics, out of roundness less than 4dB.
附图说明Description of drawings
图1为本发明的天线整体结构示意图；1 is a schematic diagram of the overall structure of the antenna of the present invention;
图2为本发明的辐射振子侧视图；Fig. 2 is a side view of the radiation oscillator of the present invention;
图3为本发明天线磁仿真反射系数曲线图；Fig. 3 is a curve diagram of the magnetic simulation reflection coefficient of the antenna of the present invention;
图4为本发明水平面方向图和不圆度(1457MHz、1795MHz)；Fig. 4 is the horizontal plane pattern and out-of-roundness (1457MHz, 1795MHz) of the present invention;
图5为本发明水平面上仰10°方向图和不圆度(1457MHz、、1795MHz)。Fig. 5 is a 10° upward direction diagram and out-of-roundness (1457MHz, 1795MHz) on the horizontal plane of the present invention.
附图标记说明：1、天线外罩；2、天线辐射振子；2-1、馈电探针；2-2、馈电圆弧；2-3、辐射振子低频枝节；2-4、高频辐射枝节；2-5、辐射振子接地枝节；3、金属底板。Explanation of reference signs: 1. Antenna cover; 2. Antenna radiation oscillator; 2-1. Feed probe; 2-2. Feed arc; 2-3. Radiation oscillator low-frequency branch; 2-4. High-frequency radiation Branches; 2-5, radiation oscillator grounding branches; 3, metal bottom plate.
具体实施方式Detailed ways
以下结合具体实施例对本技术方案作详细的描述。The technical solution will be described in detail below in conjunction with specific embodiments.
如图1-图2所示，本发明是一种双频全向高铁天线，包括天线辐射振子2、金属底板3和天线外罩1，天线辐射振子立于金属底板上，为倒F形式的变形，外罩呈流线型，设置在天线辐射振子外，天线辐射振子2包括高频辐射枝节2-4、低频辐射枝节2-3、辐射振子馈电部分和辐射振子接地枝节2-5，高频辐射枝节与低频辐射枝节连接，辐射振子馈电部分、辐射振子接地枝节分别连接于低频辐射枝节与金属底板之间，辐射振子低频枝节2-3与金属底板平行，高频辐射枝节包含与金属底板垂直的部分和平行部分，实现了天线双频段覆盖。所述辐射振子馈电部分包括馈电探针2-1和馈电圆弧2-2，可以实现较宽范围阻抗匹配，馈电圆弧的圆弧部分镂空有半圆形孔，可以延长电流路径实现小型化，同时能够减轻天线整体重量。As shown in Figures 1-2, the present invention is a dual-frequency omnidirectional high-speed rail antenna, which includes an antenna radiation oscillator 2, a metal base plate 3, and an antenna cover 1. The antenna radiation oscillator stands on the metal base plate and is a deformation of an inverted F form. , the outer cover is streamlined, set outside the antenna radiation oscillator, the antenna radiation oscillator 2 includes a high-frequency radiation branch 2-4, a low-frequency radiation branch 2-3, a radiation oscillator feeding part and a radiation oscillator grounding branch 2-5, a high-frequency radiation branch It is connected with the low-frequency radiation branch, the feed part of the radiation oscillator and the grounding branch of the radiation oscillator are respectively connected between the low-frequency radiation branch and the metal base plate. The part and the parallel part realize the dual-band coverage of the antenna. The feeding part of the radiating oscillator includes a feeding probe 2-1 and a feeding arc 2-2, which can achieve a wide range of impedance matching. The arc part of the feeding arc is hollowed out with a semicircular hole, which can extend the current The path can be miniaturized while reducing the overall weight of the antenna.
进一步地，所述辐射振子接地枝节靠近馈电圆弧部分，并与馈电圆弧部分之间有间隔；辐射振子接地枝节与金属底板垂直，辐射振子接地枝节的接地点的面积从上往下逐渐增大，加强结构稳定性。天线辐射振子的边角采用倒圆角处理，倒角半径根据谐振点做微调。天线辐射振子采用一定厚度的金属材料，材料可以为铜、铝、合金等。Further, the grounding branch of the radiating oscillator is close to the feeding circular arc part, and there is a gap between the feeding circular arc part; the grounding branch of the radiating oscillator is perpendicular to the metal base plate, and the grounding point of the radiating oscillator grounding branch is from top to bottom. Gradually increase to enhance structural stability. The corners of the antenna radiation oscillator are rounded, and the radius of the chamfer is fine-tuned according to the resonance point. The radiating element of the antenna is made of a metal material with a certain thickness, and the material can be copper, aluminum, alloy or the like.
进一步地，所述金属底板的轮廓为两个半圆和一个矩形组合而成。为模拟真实高铁环境，天线仿真时底部加载一半径0.5m金属圆盘，由图3可知，所设计高铁天线满足覆盖1300-1500MHz和1620-2000MHz(VSWR＜1.5)，由图4和图5可知，所设计高铁天线具有全向辐射特性，水平面不圆度和水平面上仰10°不圆度满足小于4dB。Further, the outline of the metal bottom plate is a combination of two semicircles and a rectangle. In order to simulate the real high-speed rail environment, a metal disc with a radius of 0.5m is loaded on the bottom of the antenna during simulation. It can be seen from Figure 3 that the designed high-speed rail antenna meets the coverage of 1300-1500MHz and 1620-2000MHz (VSWR<1.5), as can be seen from Figure 4 and Figure 5 , the designed high-speed rail antenna has omnidirectional radiation characteristics, and the out-of-roundness of the horizontal plane and the out-of-roundness of 10° upward on the horizontal plane are less than 4dB.
本发明与现有技术相比，采用合理的馈电和接地结构实现了高铁天线的全向覆盖；同时，简化了天线的结构，优化了生产工序，较低生产成本，方便大批量生产。Compared with the prior art, the present invention adopts a reasonable feeding and grounding structure to realize the omnidirectional coverage of the high-speed rail antenna; at the same time, the structure of the antenna is simplified, the production process is optimized, the production cost is low, and mass production is convenient.
以上所述的仅是本发明的优选实施方式，应当指出，对于本领域的普通技术人员来说，在不脱离本发明创造构思的前提下，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。What has been described above is only a preferred embodiment of the present invention. It should be pointed out that for those of ordinary skill in the art, some modifications and improvements can be made without departing from the inventive concept of the present invention, and these all belong to the present invention. protection scope of the invention.
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| CN109411871A (en) * | 2018-11-16 | 2019-03-01 | 广东盛路通信科技股份有限公司 | A kind of wide band high-gain high-speed rail mimo antenna |
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| CN109411871B (en) * | 2018-11-16 | 2023-12-19 | 广东盛路通信科技股份有限公司 | Broadband high-gain high-speed railway MIMO antenna |
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Application publication date: 20180323 |
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