Abstract
The authors propose a coplanar waveguide stopband metasurface based on the Babinet principle. The resulting layout is a compact planar metal structure with complementary split ring resonators, which exhibits a high rejection stop band. The complementary rings provide a frequency band with an effective negative dielectric permittivity. Moreover, the rejected bandwidth can be expanded by introducing slots close to the rings. The authors provide a simple physical model which explains the impact of the slots. Simulations confirm the expected behavior and are in excellent agreement with the measurements.
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