NUMERICAL-STUDIES ON NONLINEAR COUPLING OF HIGH-POWER MICROWAVE PULSES INTO A CYLINDRICAL CAVITY

In this paper, we use Maxwell's equations and a set of electron-fluid equations to study the nonlinear coupling processes, which occur when high-power microwave pulses are incident on a cylindrical cavity with a cylindrical aperture, We use Einstein's theory of relativity to revi se the electron equations of momentum conservation, Making use of the finite-difference time-domain method, we simulate nonlinear microwave couplings under different atmospheric conditions, Compared with linear coupling results, some new nonlinear coupling phenomena are observed and explained.