135 results about "Beam wave" patented technology

The invention discloses a comb-shaped slow-wave structure for a multi-band electron beam channel. The comb-shaped slow-wave structure for the multi-band electron beam channel comprises a rectangular wave guide wall of which the two ends are open; double rows of comb-shaped teeth are arranged on the inner walls of the upper end surface and the lower end surface of the rectangular wave guide wall in a staggered way; a plurality of insertion pieces are inserted into the rectangular wave guide wall at equal intervals; XYZ three-dimensional coordinates are established by taking the lower-left corner of the front end surface of the rectangular wave guide wall of which the two ends are open as an original point; the direction which is upwards vertical to the original point is the Z-axis; the direction which is leftwards horizontally is the Y-axis; the direction which is backwards horizontally is the X-axis; the teeth are at equal intervals and are parallel to the YZ plane; and the insertion pieces are parallel to the XZ plane. The comb-shaped slow-wave structure for the multi-band electron beam channel has a simple main structure, is easy to machine and is compatible with the modern micro electronic mechanical system (MEMS) technology; a transverse edge effect of the comb teeth can be ignored; the working frequency band is widened obviously; the beam-wave interaction efficiency is high; the working current is improved; the output power is increased; and the comb-shaped slow-wave structure is a novel slow-wave structure which extremely has application potential.

The invention provides a terahertz source amplifying device based on a multiple-cascade high-frequency structure. The terahertz source amplifying device is a cascaded multi-electron-beam terahertz radiation source combining a backward wave amplifier and a traveling wave amplifier. A THz excitation signal is input to the backward wave amplifier and is amplified through backward wave electron beam-wave interaction, a backward wave signal is output to a traveling wave high-frequency structure through dual ports, multistage amplification and band broadening are realized through multiple beam-wave interaction at a traveling wave section, and power synthesis is carried out on signals output by the multiple-cascade structure. The terahertz source amplifying device based on multiple-cascade high-frequency structure has the characteristics of high power, high gain and wide band, has absolute advantages in implementing a THz integrated vacuum electronic device and has important application prospects in aspects such as THz radar, communication, danger detection and imaging.

The invention provides a technical scheme of an RKA (relativistic klystron amplifier) output cavity with an inner conductor arranged inside. According to the scheme, the output cavity comprises a drift tube, an output cavity body, an output cavity end cover, an output coaxial outer conductor, a collector, the inner conductor, inner support rods and outer support rods, wherein the drift tube is connected with the output cavity end cover; the output coaxial outer conductor is arranged on the outer wall of the output cavity body; the collector is fixed in the output coaxial outer conductor through the outer support rods; an outer nose cone is arranged on the collector; the inner conductor is arranged at one end, close to the outer nose cone, in the collector and connected with the outer nose cone on the collector through the inner support rods. The structure of the RKA output cavity is improved, the minimum energy required when electrons arrive at an output cavity gap can be reduced, and the output microwave power and the beam wave conversion efficiency of an RKA can be improved.