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On the TWT based on a helix slow-wave structure sustained by rectangular dielectric rods

Research output: Contribution to journalJournal article


<mark>Journal publication date</mark>5/02/1999
<mark>Journal</mark>Microwave and Optical Technology Letters
Number of pages3
<mark>Original language</mark>English


Inhomogeneous dielectric loading is a necessary approach to obtain an accurate simulation of a helix slow-wave structure in traveling-wave tubes. In this paper a new expression for the effective dielectric constant to characterize each dielectric coaxial tube in which the region between the helix and the envelope is divided for the ease of a rectangular rod is proposed. The use of this expression in a rigorous analysis method results in a more accurate simulation of the helix slow-wave structure. (C) 1999 John Wiley & Sons, Inc.