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The terahertz windows of the 5 meter Dome A Terahertz Explorer (DATE5) are primarily over the wavelengths between 350 and 200 μm. For studying the performance of the DATE5, based on a finite element model of the whole telescope assembly, the Eigen frequencies and Eigen modes of the DATE5 structure at different elevation angles are studied. The obtained results show the ranges of first 3 Eigen frequencies...
A formulation is presented to implement the second-order perfectly matched layer (PML) in the time-domain finite element (TDFE) simulation of electromagnetic problems. The formulation is validated by the numerical simulation of a waveguide, a stripline, and an antenna problem. The numerical results show clearly that the second-order PML implemented in the TDFE algorithm can effectively absorb both...
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