Journal: Scientific Reports

Article Title: Wide-angle, wide-band, polarization-insensitive metamaterial absorber for thermal energy harvesting

doi: 10.1038/s41598-020-73368-7

Figure Lengend Snippet: The proposed metamaterial perfect absorber (MPA) structure ( a ) 3D isometric view, ( b ) top view showing the design parameters of the split-ring-resonator (SRR) and crossed ellipses, ( c ) Cross-sectional view of the MPA showing the metal–insulator-metal (MIM) 3-layers with thicknesses as design parameters. (ANSYS HFSS 2018, https://www.ansys.com/ ).

Article Snippet: These calculations were obtained using FEM simulations in both ANSYS HFSS and COMSOL Multiphysics, and the corresponding field distributions are presented in Fig. (a-f).

Techniques:

Journal: Scientific Reports

Article Title: Wide-angle, wide-band, polarization-insensitive metamaterial absorber for thermal energy harvesting

doi: 10.1038/s41598-020-73368-7

Figure Lengend Snippet: The distribution of the magnetic field intensity |H| 2 of the proposed MPA structure calculated at two peaks of 9.7 μm and 10 μm, respectively. ( a , b ) at the cross section at the interface between the top resonators and the dielectric layer below, where the darker color represents higher magnetic field intensity, all plots at the same scale. ( c , d ) the grey scale spectrum maps the magnetic field intensity at XZ-plane cross-section, while the red arrows show the electric field distribution at both resonance wavelengths emphasizing the creation of magnetic resonances. The cross-section is cut along the CE arm in ( c ), while it passes through the circumference of the QSRR in ( d ). ( e , f ) YZ-plane cross-section illustrates the dominant source of the resonance occurs at each absorption peak; the left one shows the field beneath the crossed ellipses resonance is dominating, while the right one reveals the domination of QSRR resonance. (ANSYS HFSS 2018, https://www.ansys.com/ , COMSOL Multiphysics 5.3 ).

Article Snippet: These calculations were obtained using FEM simulations in both ANSYS HFSS and COMSOL Multiphysics, and the corresponding field distributions are presented in Fig. (a-f).

Techniques:

Journal: Scientific Reports

Article Title: Wide-angle, wide-band, polarization-insensitive metamaterial absorber for thermal energy harvesting

doi: 10.1038/s41598-020-73368-7

Figure Lengend Snippet: ( a ) A schematic representation for the array of connected rectennas using the proposed MPA structure with control lines in green (horizontal) and red (vertical), (ANSYS HFSS 2018, https://www.ansys.com/ ) ( b ) The absorption efficiency of the proposed MPA structure calculated for the substrate (green), load (blue) and metal (red) of the MPA with PI substrate.

Article Snippet: These calculations were obtained using FEM simulations in both ANSYS HFSS and COMSOL Multiphysics, and the corresponding field distributions are presented in Fig. (a-f).

Techniques: Control

Journal: Sensors (Basel, Switzerland)

Article Title: Design and Validation of a Reflectarray Antenna with Optimized Beam for Ground Target Monitoring with a DVB-S-Based Passive Radar

doi: 10.3390/s21165263

Figure Lengend Snippet: RCS simulation model and estimated BRCS in each range bin for the two trial scenarios in the two possible trajectories along the roads: moving away from the PR or approaching it.

Article Snippet: The Bistatic Radar Cross Section (BRCS) of a model similar to the car employed as controlled target in the first deployment was simulated in ANSYS HFSS employing a multi-bounce rays approach with the physical theory of diffraction (PTD) correction.

Techniques:

Journal: Sensors (Basel, Switzerland)

Article Title: Design and Validation of a Reflectarray Antenna with Optimized Beam for Ground Target Monitoring with a DVB-S-Based Passive Radar

doi: 10.3390/s21165263

Figure Lengend Snippet: Curves of coverage ranges versus target BRCS for the measured antenna gain. System sensitivity equals−148.5 dBm calculated for P D = 80 % and P F A = 10 − 4 ( S N R D E T = 16 dB).

Article Snippet: The Bistatic Radar Cross Section (BRCS) of a model similar to the car employed as controlled target in the first deployment was simulated in ANSYS HFSS employing a multi-bounce rays approach with the physical theory of diffraction (PTD) correction.

Techniques: