后向辐射 meaning in English
backward radiation
Examples
- This antenna is a transmission line structure with propagation constant increasing from negative to positive values , providing the backward to forward scanning capability as frequency is increasing
这种天线基于传输线结构，其传播常数由负值增加到正值，显现出一种随频率增加而具有的由后向辐射变为前向辐射的特性。 - Finally applies this structure in antenna , and gives a example of rectangular patch antenna . from the example , it can be observed that the high impedance surface can restrain the backwards radiation . 2
最后将这种高阻抗表面运用到天线上,给出了一个矩形贴片天线的仿真例子,从中观察到了高阻抗表面能抑制后向辐射,增强辐射效率的作用。 - The results indicate that compared with the antenna without reflecting structure , the proposed antenna achieves broader impedance bandwidth , increases the forward radiation gain and has stronger backward radiation suppression
结果表明，与没有地平面反射结构的天线相比，该印制偶极子天线增加了抗带宽，提高了前向辐射增益，抑制了后向辐射。 - The result shows that the pbg structure has obvious character of forbidden band at the suitable size , and can be designed to good performance microwave filter . the pbg structure have the character of high resistance , that can reinforce the forward radiation , and reduce the backward radiation , increase the directivity , improve the gain and ameliorate the performance of the antenna . in addition , the pbg structure can also greatly increase the isolation and significantly decrease the coupling between the antenna elements
研究结果表面，取合适的尺寸时， pbg结构具有明显的禁带特性，可以设计成性能良好的微波滤波器； pbg结构具有高阻特性，把这种特性用于微波天线时， pbg结构可以加强前向辐射，减小后向辐射，增大天线的方向性系数，从而提高天线的增益，改善天线的性能，另外， pbg结构还可以大大提高天线单元之间的隔离度，显著减小天线单元间的耦合。