Full model análisis of a radial line slot antena and efficiency assesment as functions of slot pair design

摘要

A full-model structure of CA-RLSA with feeder has been analyzed by using the MoM. The results of the calculated udaperture-field show reasonable agreement with the experimental ones on the outermost round of slot pairs by the full-model analysis. We estimate effect of distance between slot pairs in φ-direction. As a result of design, udenhance of the aperture efficiency is 2%. We propose a design method by using this full-model analysis. The ρ-positions of the slot pairs are adjusted respectively to suppress the deviation of the phase in the φ−direction. As a result of calculation in the 22 GHzband, dielectric udconstant εr=2.2, height h=3.2 mm, the three kind of parameters are determined as the aperture efficiency is high.