A5100402620- Antenna Design and Analysis
- Advanced Antenna and Metasurface Technologies
- Metamaterials and Metasurfaces Applications
- Microwave Engineering and Waveguides
- Energy Harvesting in Wireless Networks
- Energy Efficient Wireless Sensor Networks
- Wireless Communication Networks Research
- High-Voltage Power Transmission Systems
- Wireless Power Transfer Systems
- RFID technology advancements
- Radio Frequency Integrated Circuit Design
- Power Systems and Technologies
- Full-Duplex Wireless Communications
- Advanced MIMO Systems Optimization
- Embedded Systems and FPGA Design
- Smart Grid and Power Systems
- Power Line Communications and Noise
- Photonic and Optical Devices
- Advanced Wireless Communication Techniques
- Plasmonic and Surface Plasmon Research
- Advanced Fiber Laser Technologies
- Indoor and Outdoor Localization Technologies
- Orbital Angular Momentum in Optics
- High voltage insulation and dielectric phenomena
- Advanced Wireless Network Optimization
Chinese Academy of Sciences
2001-2025
University of Chinese Academy of Sciences
2025
Institute of High Energy Physics
2022-2025
University of Electronic Science and Technology of China
2015-2024
Beijing University of Posts and Telecommunications
2010-2024
Huawei Technologies (China)
2014-2024
Nanjing University
2007-2024
National Laboratory of Solid State Microstructures
2007-2024
State Grid Corporation of China (China)
2010-2024
Nanchang Hangkong University
2024
A multi-input multi-output (MIMO) radar system, unlike standard phased-array radar, can transmit via its antennas multiple probing signals that may be correlated or uncorrelated with each other. This waveform diversity offered by MIMO enables superior capabilities compared a radar. One of the common practices in has been range compression. We first address question ldquoto compress not to compressrdquo considering both Cramer-Rao bound (CRB) and sufficient statistic for parameter estimation....
Abstract Optical encryption plays an increasingly important role in the field of information security owing to its parallel processing capability and low power consumption. Employing ultrathin metasurfaces optical has promoted miniaturization multifunctionality systems. Nevertheless, with few number degrees freedom (DoFs) multiplexed by single metasurface, both key space encoding are limited. To address this issue, we propose a high-security large-capacity scheme based on perfect...
We consider using a Doppler radar for accurate noncontact vital sign detection. The first captures and downconverts the wireless signal that is phase modulated by physiological movements, then identifies human heartbeat respiration rates processing baseband signal. When nonlinear modulation employed to monitor signs without contact, one of challenges we encounter presence undesired harmonic terms intermodulations other than sinusoids interest. A spectral estimation algorithm needed...
In this letter, based on a corner-cut square metasurface, planar polarization conversion structure is presented and the application for wide band low-profile circular (CP) slot antenna proposed. The mechanisms achieving CP state from linearly polarized incident wave broadening working bandwidth of conventional are analyzed theoretically. achieved with numerical optimizations parameter studies. Both simulations measurements performed to demonstrate proposed antenna, good agreements obtained....
Vehicle-to-vehicle (V2V) channels exhibit unique properties due to the highly dynamic environment and low elevation of antennas at both ends link. Of particular importance for behavior V2V channels, consequent reliability communication link, is severity dynamics blockage line-of-sight other multipath components (MPCs). The characteristics become more important as carrier frequency increases, ability signal penetrate through objects diminishes. To characterize effects vehicle blockage, we...
We synthesize and systematically characterize a novel type of magnetically tunable metamaterial absorber (MA) by integrating ferrite as substrate or superstrate into conventional passive MA. The nearly perfect absorption tunability this device is studied both numerically experimentally within X-band (8-12 GHz) in rectangular waveguide setup. Our measurements clearly show that the resonant frequency MA can be shifted across wide band continuous adjustment magnetic field acting on ferrite....
This letter presents a new broadband circularly polarized (CP) planar monopole antenna with simple structure and compact size. Broadband CP operation is achieved by vertically extending one side of the ground plane, while cross-shaped presence slot in plane assure broad impedance bandwidth. The successfully simulated, prototype fabricated. Measurement results indicate that 3 dB axial-ratio bandwidth about 42.6% (2.6 GHz, 4.8-7.4 GHz), fully covered -10 55.5% (3.35 4.36-7.71 GHz)....
Lifetime is one of the most critical indexes Wireless Sensor Network (WSN). In this paper, we propose a clustering protocol based on meta-heuristic approach (CPMA). CPMA takes network lifetime as primary consideration and consists two parts. The first part focuses online cluster head selection communication coordination. Harmony Search (HS) Algorithm, which aims to reduce total energy dissipation smooth distribution throughout network. Currently, protocols cannot automatically tune...
A tunable metasurface absorber (MA) based on polymer network liquid crystal is introduced in this paper. Despite the well-designed unit cell patterns, proposed MA can achieve both large frequency tunability and wide-angle stability. Compared with traditional crystal-based metasurfaces, measured results suggest that recovery time of structure was reduced by half. By applying an external voltage top electrode layer from 0 to a saturation 10 V, absorption peak be tuned 112.7 GHz 102.2 GHz,...
Many-core chip design has become a popular means to sustain the exponential growth of chip-level computing performance. The main advantage lies in exploitation parallelism, distributively and massively. Consequently, on-chip communication fabric becomes performance determinant. In meantime, introduction Ultra-Wideband (UWB) interconnect brings new opportunity for giga-bps bandwidth, milliwatts power, low cost implementation millimeter range future generations. this paper, we study...
In this communication, a compact and broadband coplanar waveguide-fed meandered-slot antenna is presented. Compact size of 0.3 × 0.2 λ <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> (30 20 mm on 1.6 thick FR4 dielectric substrate) achieved by employing modified meandered slot, slotted Y-shaped monopole, trident-shaped feed strip. The measurement results show an impedance bandwidth (defined for S <sub...
A high-efficiency inverse class-F microwave rectifier for wireless power transmission is described in this letter. The proposed harmonic termination network realized by connecting a λ/12 open-ended line parallel with the diode cathode, and λ/8 short-ended series anode. This structure yields compact layout, measurement results have demonstrated peak conversion efficiency of 80.4% an input 13 dBm at 2.35 GHz, larger than 60% within bandwidth 2.25-3 GHz wide range output loads.
In this article, a 2-D Airy beam is experimentally generated at microwave frequency by using simple and thin metasurface composed of single-layer square C-shaped complementary split-ring resonators (C-SRRs). It shown that the cross-polarization transmission coefficient, including magnitude phase, single C-SRR unit can be controlled modifying rotation angle, property herein used to reshape impinging field in accordance with desired profile. The designed then fabricated measure most...
Fe<sub>2</sub>O<sub>3</sub>-rGO behaves as an Earth-abundant NRR electrocatalyst for conversion of N<sub>2</sub> to NH<sub>3</sub> in 0.5 M LiClO<sub>4</sub>, achieving a large yield 22.13 μg h<sup>−1</sup> mg<sup>−1</sup><sub>cat</sub> and high faradaic efficiency 5.89%.
In this article, a Schottky diode-based microwave rectifier that employs coupled transmission lines (CTLs) is proposed. CTL herein used to enhance the voltage amplitude across diode with consequent increase in efficiency, especially for low input powers. It also shown multiple cascaded CTLs can further conversion even if benefit partially annihilated by increased insertion loss. Several compact prototypes single and dual 2.45 GHz have been fabricated measured different power levels....
This article describes the design of a dual-orthogonal <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$\pm$</tex-math> </inline-formula> 45 notation="LaTeX">$^\circ$</tex-math> polarized amplifying reconfigurable intelligent surface (RIS). To make possible use two orthogonal polarizations, an RIS architecture where single-port reflection amplifiers (RAs) are connected to antenna ports is considered....
In order to achieve minimum energy consumption in computerized numerical control (CNC) lathe processing under the premise of ensuring imposed roughness machined surface, a black hole-continuous ant colony optimization algorithm (BH-ACOR) is proposed optimize turning parameters. Taking specific and surface as objectives, test was designed. Subsequently, multi-objective mathematical model cutting stage formulated through application least-squares method fit data. The hole introduced mitigate...
Abstract To address the issues of low accuracy and high computational complexity in tra ditional channelization techniques for ultra-wideband signals, this paper proposes a novel rationally oversampled method to enhance efficiency sig nal processing. The proposed is evaluated by implementing comparing critically sampled integer algorithms. A detailed analysis impact different oversampling factors filter orders on performance provided. validity algorithm verified using baseband data from...
A broadband circularly polarized patch antenna with high gain and wide axial ratio beamwidths is proposed for ultra-highfrequency (UHF) RF identification (RFID) applications in this paper.The composed of a square patch, feed network printed on the bottom side substrates an radome.The CP radiation excited by four cylinder probes which transmit signals that have equal amplitude quadrature phase difference (0 • , 90 180 270 ) generated from network.To obtain optimum peak broad bandwidth, 100 Ω...
The smart substation, revolutionarily changing every aspect of the modern is developing fast in world and being massively deployed China quickly. A substation typically implemented with a sophisticated combination primary high-voltage equipment hierarchically networked secondary devices. Based on IEC61850 communication protocol, functionalities, such as information sharing interoperability among electric equipment, are realized substations. It regarded basis for development grid represents...