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When a hypersonic vehicle reenters into the Earth s atmosphere, the vehicle will be covered by a plasma sheath which is inhomogeneous and time-varying. In order to investigate the effects of electromagnetic (EM) wave how to spread in the plasma sheath, a modified finite-difference time-domain (JEC-FDTD) algorithm is applied to three-dimensional (3-D) time-varying plasma. Analyze the radar cross section...
In this paper, a compact third-order balanced filter with quasi-elliptic function response is synthesized based on mixed electric and magnetic(EM) coupled stepped-impedance resonators(SIRs). The filter has enhanced differential-mode(DM) transmission response since two DM transmission zeros(TZs) are generated on both sides of the passband. Existence of these two TZs is investigated by the mixed EM...
This paper presents a novel band-pass filter with four transmission zeros based on SIW structure. In this structure, we use TE10d mode and TE20d mode achieve the typical CT filter that introduces one transmission zero. While coupling microstrip line for source-load coupling will introduce the other three, which is controllable by coupling length and gap. In 8.4GHz band, the filter has return loss...
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