用于毫米波焦面成像阵的介质加载波导阵元分析

ANALYSIS OF WAVEGUIDE LOADED WITH DIELECTRIC USED AS MILLIMETER WAVE FOCAL IMAGING ARRAY ELEMENTS

分析了有望用于毫米波成像焦面阵的介质加载波导阵元 .采用时域有限差分法 (FDTD)计算输入特性 ,优化了输入基本匹配时的结构尺寸参数 .

Waveguide loaded with dielectric, which is used as focal-plane array element in millimeter wave imaging, was analyzed. Input properties of the element were analyzed and optimized for matching between feed waveguide and radiation element by finite difference time domain (FDTD) method. The coupling efficiency of radiation waveguide and the Airy' pattern from imaging lens was calculated, and compared with that of other array elements.