HFSS TM Modelling Anomalies with THz Metal-Pipe Rectangular Waveguide Structures at Room Temperature
作者： Yun Zhou , Stepan Lucyszyn
DOI: 10.2529/PIERS080907072308
关键词:
摘要: Air-fllled metal-pipe rectangular waveguides (MPRWGs) represent one of the most important forms guided-wave structure for terahertz applications. Well-known commercial electromagnetic modelling software packages currently employ over-simplifled intrinsic frequency dispersion models bulk conductivity normal metals used in structures at room temperature. This paper has compared various strategies temperature and characterized associated cavity resonators between 0.9 12THz. An expression geometrical factor a resonator been derived general case metal with "r 6 1 !? > 0. In addition, method determining corresponding lossless oscillation given flrst time such models. Using these techniques, quantitative analysis application difierent to describe nature undertaken. When use accurate relaxation-efiect model, it found that HFSS TM (Versions 10 11) gives default error attenuation constant MPRWGs 108% 12THz 41% errors both Q-factor overall detuning 7.3THz resonator. With former, measured transmission losses will be signiflcantly lower than those predicted using current version , which may lead an underestimate THz attributed extrinsic efiects. latter error, detuning, positions return loss zeros, within multi-pole fllter, not accurately by . highlighted signiflcant source modeling structures, operating temperatures, can rectifled adopting classical model dispersive behavior metals.
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