Abstract
Longitudinal dielectric rods in helix traveling-wave tubes (TWTs) contribute to the determination of the performance. A study on nonrounded rectangular rods that exhibit improved dielectric loading with respect to typical rectangular rods is proposed. The expressions for computing the effective dielectric constants for the inhomogeneous dielectric loading model are proposed. Simulated dispersion characteristics are compared with measured data from literature. An analysis method based on rigorous solutions of the field equations is adopted. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 47: 101–103, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21093
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