Abstract

For less the losses in wave guide or cavity, it operates on a fundamental (dominant) mode. For this reason, a computer program based on the finite difference method was designed and written. The present program allows studying magnetic field, trajectories of electron in electron gun and characterized the dominant mode TE1n in a rectangular and circular waveguide. The program was carried out to show the effecting the dimensions of waveguide on the cut off frequency for the propagation of TE1n mode by calculation the cut off frequency for this mode and the parasitic modes in different sizes of wave guide. Other calculations were the velocity of mode as a function of frequency (i.e. v (f)) and the impedance of mode as a function of frequency (i.e. Z( f )) in a rectangular wave-guide with length a and width b and circular wave- guide with radius r. The present results exhibit good agreement with published experimental and theoretical results. The present results can employment in applications of connecting microwave transmitters and receivers to their antennas, in equipment as radar sets, satellite communications

Keywords

The article was added to IASJ on 2020-12-11

87 Total full text downloads since the date of addition