The needed slow-wave structures must support a radio frequency (RF) electric field with a longitudinal component; the structures are periodic in the direction of the beam and behave like microwave filters with passbands and stopbands. Due to the periodicity of the geometry, the fields are identical from cell to cell except for a constant phase shift Φ. This phase shift, a purely real number in a passband of a lossless structure, varies with frequency. According to Floquet's t… Webb2 juli 2007 · Slow-wave structure in that wave velocity is much smaller than the light's velocity (3.10e8). And in contrast, fast-wave structure in that wave velocity can be …

Types and characteristics of slow wave structures - YouTube

WebbThe array of elements of the Yagi antenna can be described as a slow wave structure. The Yagi antenna is categorized to as Traveling-Wave Antenna , therefore. So the traveling … Webb10 apr. 2024 · Abstract An investigation is performed of the possibility of using oversized slow-wave structures in travelling-wave tubes for the sub-millimeter range of wavelengths. A linear theory is proposed for analyzing the properties of such slow-wave structures. Results are presented from a theoretical analysis of hot dispersion characteristics of … fish blank image

Electronics Free Full-Text Multiple Dielectric-Supported Ridge ...

WebbFigure 4 - Helical slow-wave structures with an attenuator coating (Structure I) on the outer surface of a dielectric tube and (Structure H) on the inner surface of a didectric tube. A … WebbAn improved slow-wave structure (SWS) for a 340 GHz traveling wave tube (TWT) is proposed. The dispersion curve and transmission characteristics of SWS have been … Webb31 jan. 2024 · Slow wave structure Metamaterials Backward wave oscillators Wave mechanics ABSTRACT An all-metal metamaterial slow-wave structure (MSWS), which … fish blanks ready for painting