Results 11 to 20 of about 842 (116)
Results in Physics, 2020 In this study, a new mechanism is proposed to develop a second virtual cathode (VC2). An axial vircator was simulated by adding a floating zone plate (ZP) inside the drift tube, which is designed at the dominant frequency of 3.42 GHz.
Sohail Mumtaz +5 more
doaj +1 more source
IEEE Access, 2020 The performances of Vircators have been reported in different studies showing that a high discrepancy between the simulated and measured output peak power and radiating frequency can be encountered. Limited investigations have been reported where the one-
Mae Almansoori +5 more
doaj +1 more source
Improved Vlasov Antenna with Curved Cuts and Optimized Reflector Position and Shape
International Journal of Antennas and Propagation, Volume 2015, Issue 1, 2015., 2015 This paper presents a Vlasov antenna with curved cut shape and improved reflector position and geometry suitable for high power microwave applications. The curved shape of the proposed cut totally eliminates the sharp edges and angles present in Vlasov antennas with step and bevel cuts.
H. M. El Misilmani +3 more
wiley +1 more source
On the virtual cathode oscillator’s energy optimization
AIP Advances, 2018 This paper presents a method for the maximization of the energy radiated by a Vircator at a given band of frequencies. The research focuses on axially extracted Vircators.
E. Neira, Y.-Z. Xie, F. Vega
doaj +1 more source
, 2021 Uncertainty quantification and variability analysis are two domains of interest when looking at the efficiency of HPEM sources. Vircator is known to be a low efficiency high power microwave source subject to several generally volatile phenomena such as ...
M. Almansoori +7 more
semanticscholar +1 more source
Resonance effect on a coaxial vircator
Acta Physica Sinica, 2006 Some experiments at Institute of Applied Electronics of CAEP showed that the interaction between the virtual cathode oscillator and the cavity is a key factor in determining the output microwave power and propagating modes. Particularly, we observed that the E-beam plays an important role in the cavity formation.
null Luo Xiong +3 more
openaire +1 more source
Simulation of an Axial Vircator
, 2013 An algorithm of particle-in-cell simulations is described and tested to aid further the actual design of simple vircators working on axially symmetric modes. The methods of correction of the numerical solution, have been chosen and jointly tested, allow the stable simulation of the fast nonlinear multiflow dynamics of virtual cathode formation and ...
Tikhomirov, V. V., Siahlo, S. E.
openaire +3 more sources
Enhancing Vircator Efficiency Using Tapered Reflectors With Increasing Interreflector Distance
International journal of RF and microwave computer-aided engineeringThe effectiveness of virtual cathode oscillator (Vircator) applications has been restricted due to the low efficiency in converting the electron beam to microwave. This research introduces the design of an axial Vircator that achieves higher power output
K. L. Khan +4 more
semanticscholar +1 more source
Dimensional Bounds on Vircator Emission [PDF]
IEEE Transactions on Plasma Science, 2016 6 ...
openaire +2 more sources
Весці Нацыянальнай акадэміі навук Беларусі: Серыя фізіка-тэхнічных навук, 2016 An algorithm of particle in cell simulations is described and tested to aid further the actual design of simple vircators working on axially symmetric modes.
V. V. Tikhomirov, S. E. Siahlo
doaj