【作者】 钟淑蓉； 刘长军； 许小玲；

【Author】 Shurong Zhong Changjun Liu Xiaoling Xu College of Electronics and Information Engineering, Sichuan University, Chengdu

【机构】 四川大学电子信息学院；

【摘要】 探讨了影响矩形波导中心加载分层介质圆柱反射系数的因素,实验得到了矩形波导中装满水的玻璃试管反射系数的频率响应特性,数值模拟了正弦波频率、液体相对介电常数、液体柱高度改变时,试管对液体柱反射系数的影响。得到结论:仅当液体柱处丁非谐振状态,并且液体柱高度超过波导窄边高度的1／2时,试管对液体柱反射系数的影响可以忽略不计。结论对微波化学实验系统研究具有重要的参考价值。更多还原

【Abstract】 The factors that may affect on the reflection coefficient of a layered dielectric cylinder in the center of a rectangular waveguide are discussed in the paper. Experiments are performed to achieve the frequency response of a glass test tube filled with liquid. It is simulated to obtain the impact of the test tube on the reflection coefficient when the frequency of the incident electromagnetic wave, the relative permittivity and the height of the liquid cylinder are varied. It shows that only when the liquid cylinder is not under the resonance state and the height of liquid is above one half of the length of the narrow side of the waveguide, the influence caused by the test tube is negligible. It is of great importance to the research with micro-chemistry experiment system.更多还原