Investigation of distribution of high-frequency currents in filter strip conductors based on a 2D electromagnetic crystal

Annotation: The design of the bandpass filter based on a 2D electromagnetic crystal is suggested. Parametric synthesis of the construction was carried out with the help of numerical electrodynamic analysis of 3D-model. Also distributions of highfrequency currents at the frequencies of four resonances forming bandwidth were observed. At first resonance frequencies of the of high-frequency current vectors, in all segments of parallel gaunt strip conductors, are co-directional. At frequencies of the fourth resonance – on the contrary, all of the vectors are counter-directional. At frequencies of the second and third resonances the vectors on one parallel section are codirectional, but on other section they are counter-directional. Due to unique topology of strip conductors, the signal sequentially propagate from one resonator to other. Therefore the studied filter of the fourth order possesses high frequencyselective properties: increased steepness of both slopes of bandwidth and expanded high-frequency stop band.