High conversion efficiencies of both forward and backward phase﹎atching second harmonic generations can be realized by judiciously adjusting the bias voltage applied to the unit structure of the nonlinear spoof surface plasmon polariton metawaveguide loaded with tunable varactor diodes. This work opens ...
Fig. 3: The simulated near-field distributions of the proposed SSPP waveguide. a The fundamental mode at 2.6 GHz. b The high-order mode at 6.42 GHz. Full size image We note that the dispersion curves of both fundamental and high-order modes are all on the right side of the ligh...
Overall, TMA exhibits a single-resonance in TE mode and dual-resonance in TM mode. In TE mode, the single resonance exhibits a red-shift from 1.80 THz to 0.925 THz. Similar red-shifts are obtained in TM mode with its first and second resonances (ωA and ωB) shifting from 2.825 THz ...
state (f1) and c-state (f2), respectively.bSchematic of the setup for imaging multi-depth targets. Top-view photograph of the target consisting of two patterned samples overlapped at an angle of 45°. Camera images of the dual-depth target acquired by stationary metalens in a- and c-...
et al. Electronically reconfigurable reflectarray antenna based on single-layer liquid crystal with independent dual-polarization control. IEEE Trans. Antennas Propag. 72, 5626–5636 (2024). Article MATH Google Scholar Perez-Palomino, G. et al. Design and demonstration of an electronically scanned ...
We create a reconfigurable transmission cavity though cascading two adjacent waveguide-bends, where the released energies are shown to possess different transmission bandwidths when the C-slit meta-gates are inserted into the bending corners with different rotating angles....
This can be seen in the designs achieving a range of 6.16–6.47 GHz43 or dual-band antennas that operate at 1.68–1.93 GHz and 2.11–2.51 GHz for the low-band and high-band modes, respectively49. This work presents a reconfigurable compliant mechanism antenna (CMA) with stable ...
The proposed unit cell is further used to design a PIN diode based elements reconfigurable metasurface antenna for the realization of dual band operation at mmWave frequencies. The main contributions of this chapter are summarized as follows: Firstly, a demonstration of a step-by-step procedure on...