技术领域technical field
本发明属于HPM传输与发射技术领域，具体涉及一种测试材料射频响应性能的装置。The invention belongs to the technical field of HPM transmission and emission, and in particular relates to a device for testing the radio frequency response performance of materials.
背景技术Background technique
为了降低天线的体积重量，天线反射面材料从原来的金属材料演变至现在经常使用的碳纤维反射面材料及网面材料等，这些材料的应用不仅可以降低天线的重量而且可以减小天线的体积。In order to reduce the volume weight of the antenna, the reflector material of the antenna has evolved from the original metal material to the commonly used carbon fiber reflector material and mesh material. The application of these materials can not only reduce the weight of the antenna but also reduce the volume of the antenna.
相对于金属反射面材料，碳纤维及金属网面材料的反射性能都有所下降，同时也都存在一定的微波透射特性，因此，准确测试这些反射面材料的射频响应性能是最终确定天线性能的重要标准。Compared with metal reflector materials, the reflective performance of carbon fiber and metal mesh materials has decreased, and they also have certain microwave transmission characteristics. Therefore, accurate testing of the RF response performance of these reflector materials is an important criterion for final determination of antenna performance.
通常测试材料的方法有两种，如附图1所示，第一种方法为在波导内测试材料的射频响应性能，这种方法中材料样品的反射波直接反射回微波源，如果微波源的功率很大时，对微波源有可能会造成很大的影响，甚至损坏微波源，使系统不能正常工作。第二种方法是材料样品选用1m×1m的试件，测量时采用比较法，辐射单元的入射角为45°，与天线的实际应用接近，以相同大小的铝板在同样位置的测量结果作为参考。这种方法不仅工作量大，结构复杂，而且只能获得材料的反射性能，无法同时获得材料的透射性能等参数的测试结果。Generally, there are two methods for testing materials. As shown in Figure 1, the first method is to test the radio frequency response performance of the material in the waveguide. In this method, the reflected wave of the material sample is directly reflected back to the microwave source. If the power of the microwave source is large, it may have a great impact on the microwave source, or even damage the microwave source, so that the system cannot work normally. The second method is to select a 1m×1m specimen for the material sample, and use the comparative method for measurement. The incident angle of the radiation unit is 45°, which is close to the actual application of the antenna. The measurement results of the same size aluminum plate at the same position are used as a reference. This method not only has a large workload and complex structure, but also can only obtain the reflection performance of the material, and cannot simultaneously obtain the test results of the transmission performance and other parameters of the material.
发明内容Contents of the invention
为了克服现有技术的不足，本发明提供一种测试材料射频响应性能的装置，其可以同时获得材料反射及透射性能等参数的测试结果。In order to overcome the deficiencies of the prior art, the present invention provides a device for testing the radio frequency response performance of materials, which can simultaneously obtain test results of parameters such as material reflection and transmission properties.
本发明的技术解决方案是提供一种测试材料射频响应性能的装置，其特殊之处在于：包括孪生角锥喇叭和一般角锥喇叭，上述孪生角锥喇叭和一般角锥喇叭连接构成密闭腔体；The technical solution of the present invention is to provide a device for testing the radio frequency response performance of materials, which is special in that it includes twin pyramid horns and general pyramid horns, and the twin pyramid horns and general pyramid horns are connected to form a closed cavity;
测试样品置于孪生角锥喇叭与一般角锥喇叭的连接处；The test sample is placed at the connection between the twin pyramid horn and the general pyramid horn;
上述孪生角锥喇叭的一个端口接微波源；另一个端口位于反射波路上并接反射波测试装置；一般角锥喇叭的端口位于透射波路上并接透射波测试装置。One port of the twin pyramid horns is connected to the microwave source; the other port is located on the reflected wave path and connected to the reflected wave test device; the port of the general pyramid horn is located on the transmitted wave path and connected to the transmitted wave test device.
上述孪生角锥喇叭微波源注入端口的反射系数小于5％；反射波端口的传输系数高于90％。The reflection coefficient of the injection port of the twin pyramid horn microwave source is less than 5%; the transmission coefficient of the reflection wave port is higher than 90%.
为了可以光学诊断样品表面是否有击穿现象发生，上述密封腔体上开有观察窗口；优选的，上述窗口位于一般角锥喇叭上。In order to optically diagnose whether there is a breakdown phenomenon on the surface of the sample, an observation window is opened on the above-mentioned sealed cavity; preferably, the above-mentioned window is located on a general pyramid horn.
为了满足较大功率的微波测试，上述密封腔体上开有抽真空接口，可以通过抽真空设备获得真空腔体中需要的真空环境。In order to meet the higher power microwave test, the above-mentioned sealed cavity is provided with a vacuum interface, and the vacuum environment required in the vacuum cavity can be obtained through the vacuum equipment.
优选的，上述孪生角锥喇叭和一般角锥喇叭通过法兰连接。Preferably, the twin pyramid horns and the general pyramid horns are connected by flanges.
本发明还提供一种测试材料射频响应性能的方法，微波源输出的微波通过真空密封腔的孪生角锥喇叭的一个端口照射至待测材料样品上，反射波反射至孪生角锥喇叭的另一个端口，透射波传输至一般角锥喇叭；所述孪生角锥喇叭微波源注入端口的反射系数小于5％；反射波端口的传输系数高于90％。The present invention also provides a method for testing the radio frequency response performance of the material. The microwave output by the microwave source is irradiated onto the material sample to be tested through one port of the twin pyramid horn of the vacuum sealed cavity, the reflected wave is reflected to the other port of the twin pyramid horn, and the transmitted wave is transmitted to the general pyramid horn; the reflection coefficient of the microwave source injection port of the twin pyramid horn is less than 5%; the transmission coefficient of the reflected wave port is higher than 90%.
本发明的优点是：The advantages of the present invention are:
(1)相比于波导通道内测试材料射频响应性能，微波源输出微波通过真空密封腔孪生角锥喇叭的一个端口照射至材料样品上，反射波反射至孪生角锥喇叭的另一个端口，透射波传输至一般角锥喇叭，该方法的反射微波对微波源影响非常小，具有保护微波源不受反射微波影响的特点；(1) Compared with the radio frequency response performance of the test material in the waveguide channel, the output microwave of the microwave source is irradiated onto the material sample through one port of the twin pyramid horn in the vacuum sealed cavity, the reflected wave is reflected to the other port of the twin pyramid horn, and the transmitted wave is transmitted to the general pyramid horn. The reflected microwave of this method has very little influence on the microwave source, and has the characteristics of protecting the microwave source from the influence of reflected microwave;
(2)相比于用通常材料测试的第二种方法，该方法能同时获得材料的反射和透射特性，结构简单、安装便捷；(2) Compared with the second method of testing with common materials, this method can obtain the reflection and transmission characteristics of the material at the same time, and has a simple structure and convenient installation;
(3)该方法将材料样品置于真空密封腔中，能够在真空模拟环境中测试材料的射频响应性能。(3) In this method, the material sample is placed in a vacuum-sealed cavity, and the radio frequency response performance of the material can be tested in a vacuum simulation environment.
(4)通过观察窗口的视频诊断及对反射和透射波的测试，可以诊断材料表面是否发生击穿。(4) Through the video diagnosis of the observation window and the test of reflected and transmitted waves, it is possible to diagnose whether the breakdown of the material surface occurs.
附图说明Description of drawings
图1为现有的材料反射率波导反射法测试框图；Fig. 1 is the test block diagram of existing material reflectance waveguide reflection method;
图2为现有的被测材料反射率辐射反射法测试示意图；Fig. 2 is the test schematic diagram of existing measured material reflectance radiation reflectance method;
图3是本发明装置结构示意图。Fig. 3 is a schematic diagram of the structure of the device of the present invention.
图中附图标记为：1-被测部件，2-波导定向耦合器，3-波导同轴转换，4-波导匹配负载，5-辐射单元，6-孪生角锥喇叭的第一端口，7-孪生角锥喇叭的第二端口，8-一般角锥喇叭的端口，9-孪生角锥喇叭，10-密闭腔，11-一般角锥喇叭，12-观察窗，13-抽真空接口。The reference signs in the figure are: 1-measured component, 2-waveguide directional coupler, 3-waveguide coaxial conversion, 4-waveguide matching load, 5-radiation unit, 6-the first port of the twin pyramid horn, 7-the second port of the twin pyramid horn, 8-port of the general pyramid horn, 9-twin pyramid horn, 10-closed cavity, 11-general pyramid horn, 12-observation window, 13-vacuumizing interface.
具体实施方式Detailed ways
以下结合附图对本发明做进一步的描述。The present invention will be further described below in conjunction with the accompanying drawings.
如图3所示，本发明一种测试材料射频响应性能的装置，包括孪生角锥喇叭9和一般角锥喇叭11组成真空密封腔体10，测试样品1置于孪生角锥喇叭9与一般角锥喇叭11之间，通过孪生角锥喇叭9的第一端口接微波源，第二端口7接反射波测试装置，一般角锥喇叭11的端口8接透射波测试装置，真空密封腔10上开有观察窗口12和抽真空接口13；观察窗口12可以视频诊断样品1表面是否有击穿现象发生，通过抽真空接口13对密封腔10抽真空。As shown in Figure 3, a kind of device of testing material radio frequency response performance of the present invention comprises twin pyramid horn 9 and general pyramid horn 11 and forms vacuum-sealed chamber 10, and test sample 1 is placed between twin pyramid horn 9 and general pyramid horn 11, connects microwave source by the first port of twin pyramid horn 9, second port 7 connects reflected wave testing device, port 8 of general pyramid horn 11 connects transmitted wave testing device, has observation window 12 and vacuum interface 13 on the vacuum sealing chamber 10; 12 can video diagnose whether there is a breakdown phenomenon on the surface of the sample 1, and vacuum the sealed cavity 10 through the vacuum interface 13.
本发明原理：Principle of the present invention:
本发明实验装置的孪生角锥喇叭的口径为106.26×86.8mm，由π弯连接两个端口，端口为BJ100标准波导尺寸，一般角锥喇叭的口径与孪生角锥喇叭口径一致，端口也为BJ100标准波导尺寸。两者之间放置材料样品，通过夹持使材料样品满足所要求的平面度。在进行较大功率微波测试时，可以通过抽真空设备获得真空腔体中需要的真空环境。微波通过孪生角锥喇叭的一个端口注入，照射到材料样品上，通过另一个端口反射出去，一般角锥喇叭端口接收透射微波。The caliber of the twin pyramid horns of the experimental device of the present invention is 106.26×86.8mm, two ports are connected by a π bend, and the ports are the BJ100 standard waveguide size. Generally, the caliber of the pyramid horns is consistent with the caliber of the twin pyramid horns, and the ports are also the BJ100 standard waveguide size. A material sample is placed between the two, and the material sample meets the required flatness by clamping. When performing high-power microwave testing, the vacuum environment required in the vacuum chamber can be obtained by vacuuming equipment. Microwaves are injected through one port of the twin pyramid horns, irradiated on the material sample, and reflected through the other port. Generally, the ports of the pyramid horns receive transmitted microwaves.
| Application Number | Priority Date | Filing Date | Title |
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| CN201611247435.1ACN106850085B (en) | 2016-12-29 | 2016-12-29 | A device for testing the radio frequency response performance of materials |
| Application Number | Priority Date | Filing Date | Title |
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| CN201611247435.1ACN106850085B (en) | 2016-12-29 | 2016-12-29 | A device for testing the radio frequency response performance of materials |
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| CN106850085A CN106850085A (en) | 2017-06-13 |
| CN106850085Btrue CN106850085B (en) | 2023-07-21 |
| Application Number | Title | Priority Date | Filing Date |
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| CN201611247435.1AActiveCN106850085B (en) | 2016-12-29 | 2016-12-29 | A device for testing the radio frequency response performance of materials |
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