In order to develop high power millimeter wave and terahertz radiation sources, the simulation research of high-current over-mode annular beam extended interaction device is carried out in this paper. By embedding a concentric metal cylinder with periodic array holes in a circular waveguide with periodic radial grooves, the radial electric field distribution of TM02-like mode is optimized. The ann...Show More
The excitation modes of plasma usually include gas discharge, dielectric barrier discharge, capacitor discharge and so on. Atmospheric pressure nonequilibrium plasma can be produced under non-vacuum conditions, which makes plasma in biomedicine, sewage treatment, aerospace, food sterilization and other directions have more applications. In this paper, a small size low-temperature plasma jet device...Show More
In order to realize the output requirements of RBWO, a high-power microwave radiation system is designed for the X-band placed in the outer cavity, including a mode converter and a compact antenna output structure. The electromagnetic simulation software was used to numerically simulate and optimize the mode converter and antenna structure. The results show that the X-band coaxial TEM-circular wav...Show More
An overmoded terahertz (THz) extended interaction oscillator (EIO) with high beam loading capability is presented. Through the reconstruction of the high-order mode field, a super-large beam processing mechanism is established. It proves that the overmoded operation oriented by increasing the circuit size has more potential technology expansions related to beam-wave energy conversion. This EIO is ...Show More
