The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
A 0.38THz Traveling Wave Tube (TWT) based on the sine waveguide and sheet beam tunnel is proposed to amplify the terahertz wave. In this paper, the high frequency characteristics of sine waveguide with sheet beam tunnel are calculated by 3-D high frequency simulation software. From the particle-in-cell simulation results, this beam-wave interaction can produce output power 13W at 0.38THz, and the...
A sine waveguide traveling-wave tube with cylindrical electron beam tunnel is proposed to amplify the terahertz wave. In this paper, the high frequency characteristics of sine waveguide with cylindrical electron beam tunnel are calculated by 3-D high frequency simulation software. From the particle-in-cell simulation results, this beam-wave interaction circuit can produce several watts ranging from...
Analysis of a Ka-band relativistic sheet beam traveling-wave-tube (RTWT) by simulation method is presented in this paper. The single grating rectangular waveguide is chosen for its slow wave structure (SWS) due to its flat shape, better transmission characteristics and superiority for fabrication, mechanical robustness. The high-frequency characteristic of the single-grating rectangular, the transmission...
To achieve a narrow-band THz coherent Cherenkov radiation, the excited wakefield should be periodic and has a sin-like profile in time domain. Because the the wakefield pulse is similar to the driven bunch shape, the condition of narrow-band THz radiation is determined by a simple expression and verified by the commercial software CST PS.
Sine waveguide is a novel electromagnetic structure. The experimental and theoretical investigation work done on sine waveguide for terahertz vacuum electron devices is reported in this paper. One experimental model is fabricated in W-band, and its transmission loss is measured. At the same time, several terahertz traveling wave tube amplifiers and backward wave oscillators are designed in particle-in-cell...
An improved slow-wave structure (SWS), i.e., a dielectric-lined azimuthally periodic circular waveguide (DLAP-CW) that is a modified form of a conventional dielectric-lined circular waveguide (DL-CW), is proposed. The slow-wave characteristics are studied by the spatial harmonics method. Analytical solutions for the dispersion characteristics and interaction impedance are derived. The complicated...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.