混合小型化波导热疗天线设计  

Design of Hybrid Miniaturized Waveguide Thermal Therapy Antenna

作　　者：王婷 杜永兴[1] 李敏超 李晨璐 李宝山[1] WANG Ting;DU Yongxing;LI Minchao;LI Chenglu;LI Baoshan(School of Information Engineering,Inner Mongolia University of Science and Technology,Baotou 014010,China)

机构地区：[1]内蒙古科技大学信息工程学院,包头014010

出　　处：《微波学报》2024年第1期28-33,43,共7页Journal of Microwaves

基　　金：国家自然科学基金(61961033);内蒙古自然科学基金(2021MS06021);内蒙古自治区研究生教育教学改革研究与实践项目(YJG20191012710);内蒙古自治区科技重大专项(2019ZD025)。

摘　　要：热疗天线由于体积较大,辐射的微波能量范围也较大,天线设计使用较为复杂,不适用于治疗体积较小的肿瘤。针对这一问题设计了一种小型化波导热疗天线来治疗小体积肿瘤,考虑到透热深度与天线体积的兼顾,选用了915 MHz的中心频率,使用混合小型化技术将天线小型化,即通过对天线加脊的同时加入短路探针将天线半径缩小到了19 mm,其高为36 mm。比吸收率仿真时馈入1 W的能量最高点能够达到45 W/kg,温度场仿真时馈入20 W能量加热30分钟后最热的区域温度可达45℃,体模实验结果与仿真实验相吻合,这些实验结果均表明其能够达到治疗乳房内部肿瘤的效果。Due to the large size and large microwave energy range,the design and use of thermal therapy antenna is complicated,which is not suitable for treating small tumors.To solve this problem,a miniaturized waveguide thermal therapy antenna is designed to treat small tumors,and the center frequency of 915 MHz is chosen to balance the depth of heat transmission and the size of the antenna.The hybrid miniaturization technology is used to miniaturize the antenna.The antenna radius is reduced to 19 mm and its height is 36 mm by adding a short-circuit probe while adding a ridge to the antenna.The highest point is 45W/kg when 1 W is fed,and the hottest area can be heated to 45°C after 30 minutes when 20 W is fed in the temperature field simulation,and the results of the body model experiments are consistent with the simulation experiments,which show that it can achieve the effect of treating internal breast tumors.

关 键 词：微波热疗 小型化 波导天线 体模热疗 

分 类 号：TN820[电子电信—信息与通信工程] R454[医药卫生—治疗学]