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Asymmetric two-dimensional (2D) electromagnetic band gap (EBG) waveguide with hexagonal lattice is theoretical investigated. The EBG cavity is made of metal rods with hexagonal lattice, which has an air hole in the center formed by remove a metal rod and two rods with different diameter. Changing the defect rod diameter, the eigenfrequency and S parameter can be simulated. The EBG cavity with large...
A novel add-drop filter based on microring embedded with several resonator cavities is proposed, and the effects of the numbers and radius of the cavities, as well as gaps between cavities and microring, on the performance of this filter are analyzed. The simulations show the spectrum of the filter could be improved when the resonance of cavities inside the microring are excited. This filter exhibits...
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