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The influence of waveguide spacing on transmission response for parallel-plate waveguide with a single deep cavity has been experimentally studied. The results indicate the depth of cavity determines the maximum channel number and the channel number control can be achieved by changing the waveguide spacing. Results show that this structure can be used to be a promising tunable number-adjustable terahertz...
A tunable double-channel narrowband terahertz filter integrated with parallel plate waveguide cavities is described. The filter is formed by machining two rectangular grooves into upper and bottom plates of parallel plate waveguide, respectively. Tuning is achieved by a relative lateral shift of two metal plates with rectangle grooves. Simulation results show that both the resonance frequency and...
Simultaneously enhanced and opposite lateral shifts for TE and TM modes can be found experimentally on a symmetrical metal cladding waveguide. This phenomenon may lead to potential applications such as spatial polarization splitter.
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