Tuning gain and bandwidth of traveling wave tubes using metamaterial beam-wave interaction structures

Journal Article · Tue Oct 14 00:00:00 EDT 2014 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4897235· OSTI ID:22305802

Lipton, Robert; Polizzi, Anthony ^[1]

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1. Department of Mathematics, Louisiana State University, Baton Rouge, Louisiana 70803-4918 (United States)

We employ metamaterial beam-wave interaction structures for tuning the gain and bandwidth of short traveling wave tubes. The interaction structures are made from metal rings of uniform cross section, which are periodically deployed along the length of the traveling wave tube. The aspect ratio of the ring cross sections is adjusted to control both gain and bandwidth. The frequency of operation is controlled by the filling fraction of the ring cross section with respect to the size of the period cell.

• OSTI ID: 22305802
• Journal Information: Journal of Applied Physics, Vol. 116, Issue 14; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ASPECT RATIO
BEAMS
CROSS SECTIONS
GAIN
INTERACTIONS
SPATIAL DISTRIBUTION
TRAVELLING WAVE TUBES