Minimizing Dispersion in a TEM Waveguide Bend by a Layered Approximation of a Graded Dielectric Material
نویسندگان
چکیده
Waveguide bends pose a problem for high-voltage uh.ra-wideband (UWB) systems or for any tr.ansmission-line system with low-loss/fast-risetime requirements, since only a straight section of conventional transmission line can support the pure TEM mode necessary to preserve the risetime of a transmitted pulse. Here we consider alternative concepts for compensation of waveguide bends. One concept, a layered approximation of a graded dielectric strip line bend, is built and tested. By reducing the dispersion of a transmitted voltage step, this strip line bend demonstrates the principle of compensation of a waveguide bend by a graded dielectric lens.
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