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Dispersion-Minimized Rod and Tube Dielectric Waveguides at <inline-formula> <tex-math notation="LaTeX">$W$ </tex-math> </inline-formula>-Band and <inline-formula> <tex-math notation="LaTeX">$D$ </tex-math> </inline-formula>-Band Frequencies

2018; IEEE Microwave Theory and Techniques Society; Volume: 28; Issue: 7 Linguagem: Inglês

10.1109/lmwc.2018.2839649

1558-1764

André Meyer, Kristina Kruger, Martin Schneider,

Semiconductor Lasers and Optical Devices

For multigigabit communication links, dielectric waveguides (DWGs) are a cost-efficient alternative to conventional transmission lines such as (coaxial or paired) copper cables or optical fibers. The DWG can be optimized in different ways: optimization can be done for low attenuation or low dispersion to increase the data rate and link distance or for high guiding behavior to realize small bending radii. In this letter, dispersion minimization of DWGs with a circular cross section is investigated. An analytical approach is used to calculate the waveguide dispersion of rod and tube DWGs for different combinations of outer and inner diameters as well as different materials at W-band and D-band frequencies. As a result, design guidelines for dispersion-minimized DWGs are presented. Finally, a dispersion-minimized tubular DWG was realized and measured to prove the results of the optimization.