Computation of Microwave Attenuation on Coplanar Waveguide with Conformal ADI-FDTD Method |
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| Authors: | Haiyan Chen and Xiaoyong Gan |
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| Institution: | (1) School of Science, Yangtze University, Jingzhou, 434023, People's Republic of China;(2) School of Optoelectronic Information, University of Electronic Science and Technology of China, Chengdu, 610054, People's Republic of China |
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| Abstract: | A novel Conformal Finite-Difference Time-Domain based on Alternating-Direction Implicit Method(ADI-CFDTD) used to calculate the microwave attenuation on coplanar waveguide(CPW) with complicated cross-section up to 200GHz is presented. This ADI-CFDTD algorithm is the combination of conformal algorithm dealing with the deformed cell with ADI-FDTD, and has unconditionally stable. The difference equations are derived from the Faraday's and Ampere's law. To validate its accuracy and efficiency, as an example, a CPW fabricated on lithium niobate is proposed. Numerical results demonstrate that this new ADI-CFDTD algorithm has more accuracy than that of quasi-static and CFDTD and shows good agreement with experiment data. When frequency is up to millimeter wave band the radiation loss is not negligible in total power loss. |
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| Keywords: | ADI-CFDTD algorithm Coplanar waveguide micrometer attenuation lithium niobate loss |
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