A5078858854- Antenna Design and Analysis
- Millimeter-Wave Propagation and Modeling
- Metamaterials and Metasurfaces Applications
- Advanced Fiber Optic Sensors
- Microwave Engineering and Waveguides
- Advanced Antenna and Metasurface Technologies
- Advanced DC-DC Converters
- Multilevel Inverters and Converters
- Antenna Design and Optimization
- Plasmonic and Surface Plasmon Research
- Silicon Carbide Semiconductor Technologies
- Advanced MIMO Systems Optimization
- Photonic Crystal and Fiber Optics
- Photonic and Optical Devices
- Random lasers and scattering media
- Orbital Angular Momentum in Optics
- Power Systems and Renewable Energy
- Analytical Chemistry and Sensors
- Electromagnetic Compatibility and Noise Suppression
- Neural Networks and Reservoir Computing
- Advanced Wireless Communication Techniques
- Terahertz technology and applications
- Modular Robots and Swarm Intelligence
- Hearing Loss and Rehabilitation
- Radio Frequency Integrated Circuit Design
Anhui University
2023-2024
Dalian University of Technology
2023-2024
Huazhong University of Science and Technology
2021-2023
Fudan University
2006-2023
Changshu Institute of Technology
2022
North China University of Water Resources and Electric Power
2019-2021
Zaozhuang University
2020
North China Electric Power University
2017
It is vital and promising for portable disposable biosensing devices to achieve on-site detection analysis of cancer cells. Although traditional labeling techniques provide an accurate quantitative measurement, the complicated cell staining high-cost measurements limit their further development. Here, we demonstrate a nonimmune technology. The plasmonic biosensors, which are based on anisotropic resonant split ring resonators in terahertz range, successfully realize antibody-free recognition...
The high switching speeds of Wide BandGap (WBG) devices promise further breakthroughs in the development power modules. However, parasitic parameters bring more adverse effects at high-speed conditions, which makes WBG loss and ElectroMagnetic Interference (EMI) problems. In this article, a 1200-V/24-A SiC half-bridge module is presented with ultralow capacitance inductance for low common-mode (CM) EMI loss. This designed from stacked substrate hybrid package structure by optimizing layout...
In this study, a high-isolation and high-gain multiple-input multiple-output (MIMO) antenna array operating at 77 GHz is proposed. It consists of two columns transmitting (TX) sawtooth linear arrays rows receiving (RX) with rectangle ring layout. Each TX RX contains 12 24 units, respectively. The units adopt the same topology metal cavity fed by substrate-integrated waveguide (SIW) slot. We introduce several <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML"...
In this study, a 77 GHz phased array antenna based on substrate-integrated waveguide (SIW) is proposed. The proposed includes two columns of transmitting (TX) linear arrays and rows receiving (RX) arrays, which form rectangular ring distribution. These TX RX antennas are vertically polarized cavity fed by SIW slots. Simulation results show that the have good scanning capabilities ±30° in elevation direction ±45° azimuth at 75–81 GHz, respectively. order to verify performance antenna, we...
Despite the growing interests for controlling terahertz (THz) scatterings via metallic metasurfaces, avoidance of Ohmic loss resulting from interaction between light and phonons or free electrons remains an arduous task. Herein, we propose a new approach ultra-wideband low-loss control THz all-dielectric coding metasurface (DCMF). In our experiments, DCMFs manipulate waves remarkably in 900 GHz. When wave enters into DCMFs, it emerges split two beams with higher amplitude transmission up to...
In this paper, we exploit the temporal analogue of ghost imaging technique, demonstrating computational Brillouin optical time-domain reflectometry (BOTDR) that aims to reduce sampling rate requirement greatly compared traditional BOTDR, which realizes sensing purposes by sending a light pulse into an fiber and detecting its spontaneous scattering signal. The proposed approach regards signal associated one as image, can be retrieved correlating pre-known binary codes beam is modulated...
Traditional fast Fourier transform is used to extract the frequency component at cost of losing time domain, which critical for metasurface biosensing. In this Letter, a more comprehensive algorithm, continuous wavelet (CWT), process signals from THz time-domain spectroscopy introduced. By comparing metasurface-enhanced 2D time-frequency mappings (TFMs) HaCaT and HSC3 cells, two types biological cells can be clearly differentiated, showing great potential CWT in label-free recognition cells....
A novel photonic crystal fiber (PCF) sensor with three D-shaped holes based on surface plasmon resonance (SPR) is analyzed in this paper. Three are filled the analyte, and gold film deposited side of planes. The design outward expansion can effectively solve uniformity problem metallized nano-coating, it beneficial to filling analyte convenient for real-time measurement analyte. Compared hexagonal lattice structure, triangular arrangement clad air significantly reduce transmission loss light...
This paper demonstrates a unique voltage overshoot phenomenon of keep-off state devices in three level simplified neutral point clamped (3L-SNPC) inverter which comprises DC-DC chopper and three-phase two-level (2L) inverter. The issue is found to be related the switching action will introduce on constant 2L-inverter. transients different cases are analyzed reveal mechanism phenomenon. Based analysis, snubber circuit used suppress overshoot. Simulations using LTspice software validate...
Background Hearing loss has occurred as a critical concern for aging and health. However, it remains unknown whether nocturnal sleep midday napping duration are associated with hearing in middle-aged older adults. Methods The study comprised 9,573 adults from China Health Retirement Longitudinal Study, who have completed the survey characteristics subjective functional hearing. We collected self-reported (&lt;5, 5 to &lt;6, 6 &lt;7, 7 &lt;9, ≥9 h/night) (≤5, ≤30, &gt;30...
Abstract A low sidelobe 77 GHz centre‐fed microstrip patch array antenna is proposed for automotive radar application. The comprises eight linear arrays, each of which by a coplanar waveguide with ground transmission line at the back patches. Each contains 10 units, are connected through T‐type power divider network to achieve −30 dB Taylor weighted distribution. simulation results show that designed phased has good one‐dimensional scanning ability ±45° active voltage standing wave ratio...
In this letter, we proposed a wideband, gain-enhanced, and high radiation efficiency (REFF) groove gap waveguide (GGW) metal slot antenna using pin array. The consists of GGW feed layer layer. open short sides the contribute wide working bandwidth, while introduction arrays positioned on both enhances antenna's gain front-to-back ratio (FBR), promoting symmetry patterns. measured results agree well with simulation results. It exhibits bandwidth 63.4–88.8 GHz voltage standing wave (VSWR) less...
This paper proposes an analytical averaged loss model of a three-level Neutral Point Clamped (3L-NPC) converter using SiC devices with sinusoidal based PWM modulation. Both conducting and switching have been analyzed. Their relationship modulation index power factor angle has also studied. Finally, simulation carried out to verify the accuracy model. The result shows that parameters only provided by datasheet, maximum error calculation is 9.3% compared simulation, which means effective...
The characteristics of a photonic crystal fiber sensor with reuleaux triangle are studied by using the finite element method. wavelength sensitivity designed optical is related to arc radius triangle. Whether core area solid or liquid as well refractive index contributes sensitivity. simulation results show that larger leads higher can be improved introducing core, and achieved lower core. In addition, specific channel plated gold film polished then analyte deposited on surface, in which...
In this paper, a space vector based diagnosis method for switch open-circuit fault (SOCF) in Vienna rectifier is proposed by analyzing the characteristics of different states. With method, an SOCF can be detected and identified fast precisely during all period operation time, will bring considerable benefits terms avoiding occurrence over current. The needs no extra hardware or heavy calculation, inserted to any control loop easily. performance effectiveness are verified simulations experiments.