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Nonrounded dielectric rectangular rods in helix traveling‐wave tubes
Author(s) -
Paoloni Claudio
Publication year - 2005
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.21093
Subject(s) - rod , dielectric , microwave , helix (gastropod) , materials science , dispersion (optics) , field (mathematics) , optics , acoustics , engineering , physics , optoelectronics , mathematics , telecommunications , medicine , alternative medicine , pathology , snail , pure mathematics , ecology , biology
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