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PHENOMENOLOGICAL DESCRIPTION OF MICROWAVE
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admittance amplifier amplitude analysis assumed attenuator backward-wave becomes boundary conditions capacitance cathode cavity Chapter charge computed cosh coth coupling Courtesy current density curves cylindrical d-c velocity delay lines derived described determined direction discussed drift region effects electric field electromagnetic electron beam electron stream equal to zero equation equivalent exist expression factor field components finite forward-wave function give given by Eq group velocity helical sheath helix hence impedance input kinetic power klystron linear longitudinal M-type magnetic field magnetron Maxwell's equations microwave tubes mode noise figure O-type obtains oscillation output parameter phase constant phase velocity plane potential power flow Poynting vector propagation constant quantities relation resonance shown in Fig sinh slow wave slow-wave guide solutions of Eq space harmonics space-charge waves structure surface tanh theory tion transmission line transverse traveling-wave tubes values vector velocity modulation voltage wave traveling waveguides wavelength written