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A new approach to improve the Q value of the spiral inductor is proposed. Full wave Finite Difference Method in Time Domain(FDTD) is used to analyse the non-uniform current distribution arousing from the increasing number of turns of the spiral inductor. The Electromagnetic Bandgap(EBG) hole structure is utilized to suppress the surface wave and mitigate the eddy effect for the spiral inductor with...
A new double-septums in main wave guide and single septum in side waveguide ortho-mode transducer (OMT) is proposed in this paper. Finite difference method in time domain (FDTD) and genetic algorithms (GAs) are combined to analysis and optimize this new OMT. The simulation results of the OMT together with the feed horn validate the better characteristics of the new OMT than that of the common structure...
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