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A terahertz (THz) metasurface, with the unit cells consisting of double metal loops and a metallic back film on both sides of the dielectric layer, is investigated to find the connection between reflectivity and pattern geometry. An equivalent circuit of the unit cell is also given to ease the analysis and predication of the reflection coefficient and also to provide a guideline for tuning the impedance...
A metasurface with double square loops is studied in this paper. Moreover, an equivalent circuit model of the metasurface is proposed. The input impedances and reflection coefficients of both the unit cell and its equivalent circuit agree reasonably well, which proves the validity of the equivalent circuit. Therefore, the operation principle of the unit cell can be understood through observing the...
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