A5062291724- Pulsed Power Technology Applications
- Antenna Design and Analysis
- Advanced Antenna and Metasurface Technologies
- Gyrotron and Vacuum Electronics Research
- Microwave Engineering and Waveguides
- Electromagnetic Effects on Materials
- Metamaterials and Metasurfaces Applications
- Thin-Film Transistor Technologies
- Silicon Nanostructures and Photoluminescence
- Silicon and Solar Cell Technologies
- Electromagnetic Compatibility and Measurements
- Electromagnetic wave absorption materials
- Advanced Energy Technologies and Civil Engineering Innovations
- Technology and Security Systems
- solar cell performance optimization
- Topological Materials and Phenomena
- Power Systems and Technologies
- Graphene research and applications
- Lightning and Electromagnetic Phenomena
- Electromagnetic Launch and Propulsion Technology
- Electromagnetic Compatibility and Noise Suppression
- Thermal Radiation and Cooling Technologies
- Electrical Fault Detection and Protection
China Academy of Engineering Physics
2019-2022
Mianyang Normal University
2020
In this work, we demonstrate that the performance of c-Si/ZnO heterojunction ultrathin-film solar cells (SCs) is enhanced by an integrated structure c-Si trapezoidal pyramids on top a active layer and Al in back electrode. The pyramid (TTP) increases absorption short wavelengths lengthening propagation distance incident light coupling into photonic modes layer. bottom (BP) improves overall optical especially for long wavelength band forming surface plasmon resonance (SPR) mode As result,...
We find that the solar energy absorption efficiency is high under a spectrum at AM 1.5, and it also has polarization-independence incidence insensitivity. Our absorber widest operating band compared with similar absorbers reported previously.
This paper proposes a tunable sensing detector based on Bulk Dirac semimetals (BDS). The bottom-middle-top structure of the is metal-dielectric-Dirac semimetal. designed simulated in frequency domain by finite element method (FEM). And simulation results indicate that achieves three perfect absorption peaks with absorptivity greater than 99.8% range 2.4-5.2 THz. We analyze cause peak using random phase approximation theory. device exhibits good angular insensitivity different incident angle...
In this work, the absorption of solar energy thin-film c-silicon (silicon is 1 μm) heterojunction cells (SSCs) with combination Ag nanoparticles (NPs) and TiO2 inverted triangular prism (IP) enhanced significantly. The top IP increases short wavelengths by coupling incident light into photonic modes in active layer. bottom NPs primarily enhances longer surface plasmon resonance (SPR). Thus, average 91.40% under AM 1.5 spectrum. geometries are optimized that based on maximum values Jsc. Jsc...
This letter demonstrates an ultra-wideband circularly polarized cavity-backed crossed-dipole antenna. It consists of a modified and cavity. Each arm the is mainly made up by combination triangle fan-shaped sector, arms within same layer substrate are connected vacant-quarter ring. The cavity composed rectangular cavity, four coupled rotated vertical metallic plates, sequentially steps. Through combining together, characteristics in terms - 10-dB impedance bandwidth (IBW) 3-dB axial-ratio...
In order to analyze the electromagnetic coupling path of real complex electronic system in high power microwave more conveniently and effectively, based on topology theory, a signal flow graph drawing simplification method port is proposed, assignment principle are given. The new can satisfy construction environment with multiple interference sources different bandwidths. Furthermore, aiming at bidirectional problem shortest calculation under limit encountered practical engineering...
Shielding effectiveness (SE) dominates the shielding performance of materials. Under excitation high-intensity transient electromagnetic pulse, especially wide-band how to characterize and calculate SE materials is not clear. In order reveal towards a systematic experimental investigation was performed on home-made measurement system. The `peak value reduction ( <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">PR</sub> )' verified be an effective...
A single-layer microstrip-fed patch antenna with ultra-wideband harmonic suppression is demonstrated. compact and novel defected ground structure (DGS) introduced. The filtering characteristics of the microstrip have been improved. working frequency 3.13 GHz (f <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">C</sub> ) designed manufactured. proposed has an ultra-wide bandwidth range from 2f to 5f , which better than earlier design (2f 4f )....
Suppressing higher-order modes up to sixth harmonics of the fundamental working frequency in a single-layer microstrip line-fed patch antenna has been successfully demonstrated. Higher-order are suppressed by simultaneously employing circular head open stub connected feed line and novel defected ground structure (DGS) beneath line. The filtering property improved DGS significantly. role played is carefully analyzed, effect some key parameters further discussed. A with 3.13 GHz (fc) designed...
It is one of the main coupling ways broadband high power microwave pulse to enter into electronic equipment in form field line and produce effect. However, both signal test data contain a certain interval dispersion, which may conceal inherent law In order clearly understand quantify inheritance two signals, large sample single-core cable signals were tested based on plate-cable model, parameter characteristics distribution sets impulse statistically analyzed, between them was tested. This...
In order to systematically analysis the damage mechanism of typical radio fuze caused by narrow band high power microwave (NB-HPM), we developed an standard experiment system. Through several rounds experiments form L X band, threshold value, sensitive parameters and main energy coupled channel are defined. By full wave simulation coupling testing at key points, components is identified. Finally, explained multiple physical field simulation. All above work shows that unlike ultra-band HPM,...
Shielding effectiveness (SE) is the most important parameter of electromagnetic shielding materials. But under excitation time domain pulse such as wide band pulse, how to characterize and calculate SE materials not particularly clear. A systematic study has been finished for purpose clarifying pulse. We find that experimental objects, calculated based on "peak value reduction (SEPR)", "energy (SEWR)" "frequency FFT (SE <sub xmlns:mml="http://www.w3.org/1998/Math/MathML"...
This paper presents an analysis of time-domain electromagnetic pulse coupling to single wire. A field-to-line model was established. The simulation is performed using the uniform plane wave excitation defined by measured high-altitude nuclear (HEMP) field signal, induced currents two load terminals are simulated. validation measurement wire above grounding plate conducted in bounded simulator. frequency response actual coupled current signal monitoring system considered data preprocessing....