zhou wei, xiao liu, su xiaobao. Interaction admittance of a thin tape helix surrounded by a dielectric[J]. High Power Laser and Particle Beams, 2009, 21.
Citation:
zhou wei, xiao liu, su xiaobao. Interaction admittance of a thin tape helix surrounded by a dielectric[J]. High Power Laser and Particle Beams, 2009, 21.
zhou wei, xiao liu, su xiaobao. Interaction admittance of a thin tape helix surrounded by a dielectric[J]. High Power Laser and Particle Beams, 2009, 21.
Citation:
zhou wei, xiao liu, su xiaobao. Interaction admittance of a thin tape helix surrounded by a dielectric[J]. High Power Laser and Particle Beams, 2009, 21.
An exact dispersion has been obtained and components of the electromagnetic fields have been evaluated by expanding the surface currents on a thin tape of a traveling wave tube(TWT) in a series of Chebyshev polynomials. And based on the axial components of the fields the interaction impedance and magnetic admittance are calculated. These are foundation of 3-D nonlinear theory to design TWT. An example is given and axial components of the electromagnetic fields are computed. It is found that the result of interaction impedance according to the fields and the one obtained by Chernin agree to good accuracy, which validates the expressions of the fields. The interaction admittance calculation is a part of the 3-D TWT CAD．
DownLoad: