摘要
本文根据椭圆环微带谐振器的频域理论，对工作在２４５０ ＭＨｚ 医用椭圆环微带照射器在有耗介质复盖时进行近场分布的理论计算，分析椭圆环的不同偏心率对其近场分布的影响，并制作了数个典型的偏心率值的照射器进行阻抗匹配及红外摄象实验，得到的热象与理论计算热象定性符合。分析近场分布结果，可以选择较满意的椭圆环结构参数，以适合于医学应用。
Near field distributions of elliptic microstrip applicators, working at 2450MHz for medical treatment, were calculated in frequency domain when the applicators were covered with lossy media, revealing the effects of applicators′ eccentricity on the distributions. For a few tipical values of eccentricity, experiments on impedance matching and infra red imaging were carried out. The experimental and the theoretical heating patterns were in conformity qualitatively. From the results of near field distributions we may select the best parameter of structure of these elliptic rings for medical application.
出处
《中国生物医学工程学报》
CAS
CSCD
北大核心
1999年第4期409-416,共8页
Chinese Journal of Biomedical Engineering
关键词
椭圆环
微波疗法
偏心率
近场分布
微带照射器
Elliptic microstrip ring applicator
Eccentricity
Near bield distributions
Heating pattern
Parameter of structure
