5 December 2012 Double channel mechanically tunable terahertz filter based on parallel plate waveguide cavities
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Abstract
Theoretical and experimental works were carried out on a double channel mechanically tunable terahertz filter integrated with parallel plate waveguide cavities. The filter includes two rectangular grooves on upper and bottom plates of waveguide, respectively. The filter frequencies can be quasilinearly tuned by altering the overlap length between two rectangle grooves on metal plates. From the experiment, we found low (high) resonant frequency can be adjusted from 0.417(0.346) THz to 0.399(0.374) THz when the overlap length is altered from 0 to 500 μm, respectively. The Q values can reach 46 with the resonant frequency (0.41THz), overlap length (220 μm) and waveguide spacing (650 μm). Theoretical results show good agreement with experiment.
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Lin Chen, Lin Chen, Yiming Zhu, Yiming Zhu, } "Double channel mechanically tunable terahertz filter based on parallel plate waveguide cavities", Proc. SPIE 8562, Infrared, Millimeter-Wave, and Terahertz Technologies II, 85620O (5 December 2012); doi: 10.1117/12.2008761; https://doi.org/10.1117/12.2008761
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