Abstract
A transmissive terahertz quarter-wave plate that allows linear-to-circular polarization conversion over a wide bandwidth is proposed. This proposed quarter-wave plate is designed by employing an extended semi-analytical approach involving equivalent circuit model, transmission line theory, and genetic algorithm. Simulation results predict that the designed quarter-wave plate can achieve a 3-dB axial ratio bandwidth of 53.3% from 205 to 354 GHz, while the insertion losses remaining lower than 1.5 dB in the entire operating frequency band. This approach can be readily extended for designing other metasurfaces that realize wavefront and polarization control with improved bandwidth.
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CITATION STYLE
You, X., Fumeaux, C., & Withayachumnankul, W. (2019). Broadband Terahertz Quarter-Wave Plate Design. In International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz (Vol. 2019-September). IEEE Computer Society. https://doi.org/10.1109/IRMMW-THz.2019.8874192
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