CN104779434A - Anti-interference WiFi (wireless fidelity) dielectric printed antenna - Google Patents
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Abstract
本发明公开一种WIFI抗干扰介质版印刷天线，所述天线包括介质板、金属辐射贴片、金属微带线、金属背板和馈电接头，所述金属微带线与金属辐射贴片电连接并印刷在介质板的正面，所述金属背板印刷在介质板的背面且金属背板半包围金属辐射贴片，馈电接头的中心馈电针与金属微带线连接，馈电接头的外导体与金属背板连接。金属背板对信号起到抑制作用，因此本发明的天线为非全向辐射天线，在一个方向的辐射能力较弱，从而很好地抑制该方向的干扰信号，而且本发明为平面结构，尺寸较小，结构简单，便于生产加工。
The invention discloses a WIFI anti-jamming dielectric plate printing antenna. The antenna includes a dielectric plate, a metal radiation patch, a metal microstrip line, a metal backplane and a feeder connector. The metal microstrip line and the metal radiation patch are electrically connected. Connected and printed on the front of the dielectric board, the metal backplane is printed on the back of the dielectric board and the metal backplane half surrounds the metal radiation patch, the central feed pin of the feed connector is connected to the metal microstrip line, and the feed connector’s The outer conductor is connected to the metal backplane. The metal backplane suppresses the signal, so the antenna of the present invention is a non-omnidirectional radiation antenna, and the radiation ability in one direction is weak, so that the interference signal in this direction is well suppressed, and the present invention has a planar structure, and the size Small, simple structure, easy to produce and process.
Description
技术领域 technical field
本发明涉及无线电天线领域，更具体地，涉及一种WIFI抗干扰介质版印刷天线。 The invention relates to the field of radio antennas, in particular to a WIFI anti-jamming dielectric plate printing antenna.
背景技术 Background technique
WIFI天线的原理是无线电发射机输出的射频信号通过馈线输送到天线，天线以电磁波的形式辐射出去。现有的WIFI天线多为全向辐射天线，其电磁波从各个方向辐射出去，其缺陷是当两个WIFI全向辐射天线比较靠近时，两个天线相互间的干扰将严重影响用户的接入速率和数据传输速率。 The principle of the WIFI antenna is that the radio frequency signal output by the radio transmitter is sent to the antenna through the feeder, and the antenna radiates out in the form of electromagnetic waves. Most of the existing WIFI antennas are omnidirectional radiation antennas, and their electromagnetic waves radiate from all directions. The defect is that when two WIFI omnidirectional radiation antennas are relatively close, the mutual interference between the two antennas will seriously affect the user access rate. and data transfer rate.
发明内容 Contents of the invention
本发明为现有的WIFI天线易受干扰、从而严重影响接入速率和数据传输速率的缺陷，提供一种结构简单且能够有效降低干扰源影响的WIFI抗干扰介质版印刷天线。 The present invention provides a WIFI anti-jamming dielectric plate printing antenna with simple structure and capable of effectively reducing the influence of interference sources for the defect that existing WIFI antennas are susceptible to interference, thereby seriously affecting the access rate and data transmission rate.
为解决上述技术问题，本发明的技术方案如下： In order to solve the problems of the technologies described above, the technical solution of the present invention is as follows:
一种WIFI抗干扰介质板印刷天线，所述天线包括介质板、金属辐射贴片、金属微带线、金属背板和馈电接头，所述金属微带线与金属辐射贴片电连接并印刷在介质板的正面，所述金属背板印刷在介质板的背面且金属背板半包围金属辐射贴片，馈电接头的中心馈电针与金属微带线连接，馈电接头的外导体与金属背板连接。 A WIFI anti-jamming dielectric plate printed antenna, the antenna includes a dielectric plate, a metal radiation patch, a metal microstrip line, a metal backplane and a feed connector, the metal microstrip line is electrically connected to the metal radiation patch and printed On the front of the dielectric board, the metal backplane is printed on the backside of the dielectric board and the metal backplane half surrounds the metal radiation patch. The central feed pin of the feed connector is connected to the metal microstrip line, and the outer conductor of the feed connector is connected to the metal microstrip line. Metal backplane connection.
在一种优选的方案中，所述金属辐射贴片为矩形、圆形或不规则形状，其尺寸为天线工作频率的四分之一波长。 In a preferred solution, the metal radiation patch is rectangular, circular or irregular in shape, and its size is a quarter wavelength of the operating frequency of the antenna.
在一种优选的方案中，所述介质板为矩形介质板。 In a preferred solution, the dielectric board is a rectangular dielectric board.
在一种优选的方案中，所述金属背板与金属辐射贴片的相对位置根据天线的性能及阻抗匹配要求确定。 In a preferred solution, the relative positions of the metal backplane and the metal radiation patch are determined according to the antenna performance and impedance matching requirements.
在一种优选的方案中，所述金属背板为L型，L型金属背板半包围所述金属辐射贴片。 In a preferred solution, the metal backplane is L-shaped, and the L-shaped metal backplane half surrounds the metal radiation patch.
在一种优选的方案中，L型金属背板的凸起部分长度大于天线工作频率的四分之一波长。 In a preferred solution, the length of the raised portion of the L-shaped metal back plate is greater than a quarter wavelength of the operating frequency of the antenna.
与现有技术相比，本发明技术方案的有益效果是：本发明WIFI抗干扰介质板印刷天线，金属背板印刷在介质板的背面且金属背板半包围金属辐射贴片，金属背板对信号起到抑制作用，因此本发明的天线为非全向辐射天线，在一个方向的辐射能力较弱，从而很好地抑制该方向的干扰信号，而且本发明为平面结构，尺寸较小，结构简单，便于生产加工。 Compared with the prior art, the beneficial effect of the technical solution of the present invention is: the WIFI anti-jamming dielectric plate of the present invention prints the antenna, the metal back plate is printed on the back of the dielectric plate and the metal back plate half surrounds the metal radiation patch, and the metal back plate is on the The signal plays a suppression role, so the antenna of the present invention is a non-omnidirectional radiation antenna, and the radiation ability in one direction is relatively weak, thereby suppressing the interference signal in this direction well, and the present invention is a planar structure with a small size and a Simple and convenient for production and processing.
附图说明 Description of drawings
图1为本发明WIFI抗干扰介质板印刷天线的正面示意图。 Fig. 1 is a schematic front view of the WIFI anti-jamming dielectric plate printed antenna of the present invention.
图2为本发明WIFI抗干扰介质板印刷天线的背面示意图。 Fig. 2 is a schematic diagram of the back side of the WIFI anti-jamming dielectric plate printed antenna of the present invention.
图3为本发明WIFI抗干扰介质板印刷天线的正面透视示意图。 Fig. 3 is a front perspective schematic diagram of the WIFI anti-jamming dielectric plate printed antenna of the present invention.
图4为本发明WIFI抗干扰介质板印刷天线的背面透视示意图。 Fig. 4 is a perspective schematic view of the back side of the WIFI anti-jamming dielectric plate printed antenna of the present invention.
图5是本发明的天线辐射方向图。 Fig. 5 is a radiation pattern diagram of the antenna of the present invention.
其中：1、介质板；2、金属辐射贴片；3、金属微带线；4、金属背板；5、馈电接头；5-1、中心馈电针；5-2、外导体。 Among them: 1. Dielectric board; 2. Metal radiation patch; 3. Metal microstrip line; 4. Metal backplane; 5. Feed connector; 5-1. Center feed needle; 5-2. Outer conductor.
具体实施方式 Detailed ways
附图仅用于示例性说明，不能理解为对本专利的限制； The accompanying drawings are for illustrative purposes only and cannot be construed as limiting the patent;
为了更好说明本实施例，附图某些部件会有省略、放大或缩小，并不代表实际产品的尺寸； In order to better illustrate this embodiment, some parts in the drawings will be omitted, enlarged or reduced, and do not represent the size of the actual product;
对于本领域技术人员来说，附图中某些公知结构及其说明可能省略是可以理解的。 For those skilled in the art, it is understandable that some well-known structures and descriptions thereof may be omitted in the drawings.
下面结合附图和实施例对本发明的技术方案做进一步的说明。 The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.
实施例1 Example 1
一种WIFI抗干扰介质板印刷天线，如图1-4所示，所述天线包括介质板1、金属辐射贴片2、金属微带线3、金属背板4和馈电接头5，所述金属微带线3与金属辐射贴片2电连接并印刷在介质板1的正面，所述金属背板4印刷在介质板1的背面且金属背板4半包围金属辐射贴片1，馈电接头5的中心馈电针5-1与金属微带线3连接，馈电接头5的外导体5-2与金属背板4连接。 A kind of WIFI anti-jamming dielectric board printing antenna, as shown in Figure 1-4, described antenna comprises dielectric board 1, metal radiation patch 2, metal microstrip line 3, metal backplane 4 and feed connector 5, described The metal microstrip line 3 is electrically connected to the metal radiation patch 2 and printed on the front of the dielectric board 1, the metal backplane 4 is printed on the back of the dielectric board 1 and the metal backplane 4 half surrounds the metal radiation patch 1, feeding The central feed pin 5 - 1 of the connector 5 is connected to the metal microstrip line 3 , and the outer conductor 5 - 2 of the feed connector 5 is connected to the metal backplane 4 .
在具体实施过程中，所述金属辐射贴片2为矩形、圆形或不规则形状，本实施例中采用矩形的金属辐射贴片2，其尺寸为天线工作频率的四分之一波长。 In a specific implementation process, the metal radiation patch 2 is rectangular, circular or irregular in shape. In this embodiment, a rectangular metal radiation patch 2 is used, and its size is a quarter wavelength of the antenna's operating frequency.
在具体实施过程中，所述介质板1为矩形介质板。 In a specific implementation process, the dielectric board 1 is a rectangular dielectric board.
在具体实施过程中，所述金属背板4与金属辐射贴片2的相对位置根据天线的性能及阻抗匹配要求确定。 In a specific implementation process, the relative positions of the metal backplane 4 and the metal radiation patch 2 are determined according to the antenna performance and impedance matching requirements.
在具体实施过程中，所述金属背板4为L型，L型金属背板4半包围所述金属辐射贴片2。 In a specific implementation process, the metal backplane 4 is L-shaped, and the L-shaped metal backplane 4 half surrounds the metal radiation patch 2 .
在具体实施过程中，L型金属背板4的凸起部分长度大于天线工作频率的四分之一波长。 In a specific implementation process, the length of the raised portion of the L-shaped metal back plate 4 is greater than a quarter wavelength of the antenna's operating frequency.
本实施例WIFI抗干扰介质板印刷天线，金属背板4印刷在介质板1的背面且金属背板4半包围金属辐射贴片2，金属背板4对信号起到抑制作用，因此本发明的天线为非全向辐射天线，在一个方向的辐射能力较弱，从而很好地抑制该方向的干扰信号，而且本发明为平面结构，尺寸较小，结构简单，便于生产加工。 In this embodiment, the WIFI anti-jamming dielectric board prints the antenna, the metal backboard 4 is printed on the back side of the dielectric board 1 and the metal backboard 4 half surrounds the metal radiation patch 2, and the metal backboard 4 suppresses the signal, so the present invention The antenna is a non-omnidirectional radiation antenna, and its radiation ability in one direction is relatively weak, so that the interference signal in this direction can be well suppressed. Moreover, the invention has a planar structure, small size, simple structure, and is convenient for production and processing.
图5为本发明WIFI抗干扰介质板印刷天线的水平面辐射方向图，天线工作频率为2.4GHz，由于L型金属背板的凸起部分长度大于四分之一天线工作波长，金属背板起到抑制、反射信号的作用，天线在遮挡方向的辐射能力较弱，比最大辐射方向低15dB，除了该方向外其他方向保持较好的辐射能力。因此，可以将天线的辐射能力最弱的方向朝向干扰源，从而降低天线接收到干扰源信号的强度，同时兼顾了其他方向上无线信号的发射和接收。 Fig. 5 is the horizontal plane radiation pattern of the WIFI anti-jamming dielectric board printing antenna of the present invention, and the operating frequency of the antenna is 2.4 GHz. Since the length of the raised part of the L-shaped metal backboard is greater than a quarter of the working wavelength of the antenna, the metal backboard plays The function of suppressing and reflecting signals, the radiation ability of the antenna in the shielding direction is weak, which is 15dB lower than the maximum radiation direction, and the radiation ability in other directions except this direction is relatively good. Therefore, the direction with the weakest radiation capability of the antenna can be directed towards the interference source, thereby reducing the strength of the interference source signal received by the antenna, while taking into account the transmission and reception of wireless signals in other directions.
相同或相似的标号对应相同或相似的部件； The same or similar reference numerals correspond to the same or similar components;
附图中描述位置关系的用语仅用于示例性说明，不能理解为对本专利的限制； The terms describing the positional relationship in the drawings are only for illustrative purposes and cannot be interpreted as limitations on this patent;
显然，本发明的上述实施例仅仅是为清楚地说明本发明所作的举例，而并非是对本发明的实施方式的限定。对于所属领域的普通技术人员来说，在上述说明的基础上还可以做出其它不同形式的变化或变动。这里无需也无法对所有的实施方式予以穷举。凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明权利要求的保护范围之内。 Apparently, the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, rather than limiting the implementation of the present invention. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. All modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the claims of the present invention.
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- 2015-04-01 CN CN201510150895.1A patent/CN104779434A/en active Pending
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| GB2396746A (en) * | 2002-12-07 | 2004-06-30 | Zhipeng Wu | Dielectric resonator antenna with asymmetrical microstrip feedline and virtual ground |
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