【作者】 杨丰铭； 朱铧丞； 杨阳； 黄卡玛；

【Author】 Fengming Yang;Huachneg Zhu;Yang Yang;Kama Huang;the College of Electronics and Information Engineering, Sichuan University;

【机构】 四川大学电子信息学院；

【摘要】 传统微波连续流加热系统的性能会受到复杂温度、流量和液体类型的影响。本文基于非对称传播波导设计了一种具有自适应阻抗的高效流体加热系统。首先,通过变换光学设计了微波非对称传播波导。将两种介电常数逐渐增大的超材料放置在波导的窄边上,以控制波数沿波传播方向增加,反方向减少。其次,在非对称波导中设置水流通道,利用微波的非对称传输特性,提高液体对微波的吸收效率,实现不同介电常数液体的阻抗适应。最后,测试了波导的非对称传输,并测试了不同介电常数液体的吸水性能。结果表明,该系统可以实现不同介电常数液体的高效加热。更多还原

【Abstract】 The performance of traditional microwave continuous flow heating systems can be affected by complex temperatures, flow rates and liquid types. In this paper, an efficient fluid heating system with adaptive impedance is designed based on an asymmetric propagating waveguide. First, a microwave asymmetric propagation waveguide is designed by transformation optics. Two metamaterials with progressively increasing dielectric constants were placed on the narrow sides of the waveguide to control the wavenumber to increase along the wave propagation direction and decrease in the opposite direction. Secondly, a water flow channel is set in the asymmetric waveguide, and the asymmetric transmission characteristics of microwaves are used to improve the absorption efficiency of the liquid to the microwave, and realize the impedance adaptation of liquids with different dielectric constants. Finally, the asymmetric transmission of the waveguide was tested, and the water absorption properties of liquids with different dielectric constants were tested. The results show that the system can achieve efficient heating of liquids with different dielectric constants.更多还原