Herein, a dual-band tunable ideal absorber based on graphene array, and the dynamic tuning performance of perfect in terahertz band its sensing properties metamaterials are studied. The shows two absorption peaks at 1.01 1.86 THz, with an absorbance 99.5% 99.9%, respectively. With elevation angle range 0°–30° frequency 0.971–1.100 THz or 1.794–1.897 designed herein can achieve greater than 90%....

A new multi-layer substrate integrated waveguide (SIW) structure is developed to design dual-band evanescent-mode band-pass filters (BPFs). Two independent series LC circuits are implemented by incorporating metallic irises in the different layers of the structure. The combination of the metallic irises with capacitive-plates is embedded inside the SIW to independently excite two evane...

Articles you may be interested in A frequency and bandwidth tunable metamaterial absorber in x-band Ferrite based metamaterials with thermo-tunable negative refractive index Appl.

In this study, an all-dielectric metamaterial absorber consisting of a ring nanocavity array, spacer layer, and metallic substrate is designed investigated. The simulation results show that the two perfect absorption peaks (99.91% 99.96%) are achieved at 539 nm 673 nm. resonance modes caused by different electric magnetic field distributions structure lead to sensing properties. addition, influ...

Infrared imagers are important for reorganization and monitoring. This paper discusses the design of an infrared imager. Optical design in medium wavelength infrared (MWIR) and long wavelength infrared (LWIR) bands is different and needs distinct detectors and materials. Reflective systems are not suitable due to their small field of view (FOV) and vignetting. Refractive dual band optical syste...