Abstract
AbstractA dielectric tape line consists of a dielectric material of rectangular or semi‐elliptical cross section having a small thickness‐to‐width ratio and placed on a conducting plane. Analysis is here conducted by using an elliptical coordinate system. Because of the use of new field functions in the interior of the tape line, convergence of the solution of the characteristic equation is much faster than other cases. In this paper, we study theoretically and experimentally the characteristics of the dominant mode. First, the analytical results are outlined. Next, the formula for the attenuation is derived and the attenuation mechanism is explained from numerical examples. The relative strength of the electric field in the horizontal and vertical directions is computed outside the tape and the results are given. We also study the relative intensity distribution of the interior electric field, the ratio of the power carried inside the tape to the total power transmitted, and the spread of the electromagnetic field. Analytical results of the attenuation characteristics and the relative intensity distribution of the external field agree very well with experimental results.
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