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Bai N.,Nanjing Southeast University | Feng J.,National Key Laboratory for Vacuum Electronics | Liao F.,National Key Laboratory for Vacuum Electronics | Sun X.,Nanjing Southeast University
AEU - International Journal of Electronics and Communications | Year: 2013

A fast analysis method, cell modified compact finite-difference time-domain method (CMC-FDTD), is presented to analyze the performance of electromagnetic band gap waveguides. The method calculates band diagrams in orthogonal coordinate system by translating nonorthogonal lattice to orthogonal lattice. It has highly stability for calculating dielectric and metallic material, either TE or TM mode, and reduces the requirement for memory. The comparisons are made among two numerical results and experimental one to validate the method. © 2013 Elsevier GmbH. Source


Bai N.,Nanjing Southeast University | Feng J.,National Key Laboratory for Vacuum Electronics | Liao F.,National Key Laboratory for Vacuum Electronics | Sun X.,Nanjing Southeast University
2010 IEEE International Vacuum Electronics Conference, IVEC 2010 | Year: 2010

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 ratio of diameter and period is simulated and high transmisstivity between rectangle waveguide and EBG waveguide can be attained by the asymmetric coupling cavity. © 2010 IEEE. Source


Bai N.,Nanjing Southeast University | Fan H.,Nanjing Southeast University | Zhao X.,Nanjing Southeast University | Liao F.,National Key Laboratory for Vacuum Electronics | And 2 more authors.
2010 IEEE International Vacuum Electronics Conference, IVEC 2010 | Year: 2010

A high space resolution platform has been built to measure the cold test parameters of Electromagnetic Band Gap (EBG) waveguide. The space resolution of this platform can be reached to 4μm and controlled by FPGA and computer through LABVIEW. An EBG waveguide is fabricated for measurement. The mode field of cross section and propagate constants have been simulated by our coding and tested by this platform. . © 2010 IEEE. Source

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