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In this paper, we analyze the propagation effects of hilly and mountainous terrain on lightning magnetic fields by using a three-dimensional (3-D) finite-difference time domain (FDTD) method. We show that the waveshape, peak value and time delay of the magnetic fields can be significantly affected when propagating along a hilly terrain. It is found in particular that the time delay of the magnetic...
The basic operation principle of microwave oscillators, such as magnetrons, is based on the motion of electrons under a combined influence of electric and magnetic fields. In such process, the DC energy is converted into the RF energy via the interaction process between the electrons and the surrounding electromagnetic field. This nonlinear process provides sufficient conditions in generating rather...
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