A5100367093- Antenna Design and Analysis
- Antenna Design and Optimization
- Advanced Antenna and Metasurface Technologies
- Microwave Engineering and Waveguides
- Optical Network Technologies
- Advanced Wireless Communication Techniques
- Metamaterials and Metasurfaces Applications
- Wireless Communication Networks Research
- Advanced Measurement and Detection Methods
- RFID technology advancements
- Indoor and Outdoor Localization Technologies
- Advanced Optical Network Technologies
- PAPR reduction in OFDM
- Advanced Photonic Communication Systems
- Algorithms and Data Compression
- Error Correcting Code Techniques
- Wetland Management and Conservation
- Insect-Plant Interactions and Control
- Optical Wireless Communication Technologies
- Energy Harvesting in Wireless Networks
- Information Technology Governance and Strategy
- Millimeter-Wave Propagation and Modeling
- Icing and De-icing Technologies
- Calcium Carbonate Crystallization and Inhibition
- Plant and animal studies
Guilin University of Electronic Technology
2023-2025
National University of Defense Technology
2022-2024
Nanjing Xiaozhuang University
2023
Harbin Electric Corporation (China)
2022
State Key Laboratory of Millimeter Waves
2019-2021
Taiyuan University of Technology
2020-2021
Southeast University
2019-2021
China Academy of Engineering Physics
2014-2020
Air Force Engineering University
2020
Northwest Institute of Eco-Environment and Resources
2020
The Pacific oyster Crassostrea gigas belongs to one of the most species-rich but genomically poorly explored phyla, Mollusca. Here we report sequencing and assembly genome using short reads a fosmid-pooling strategy, along with transcriptomes development stress response proteome shell. is highly polymorphic rich in repetitive sequences, some transposable elements still actively shaping variation. Transcriptome studies reveal an extensive set genes responding environmental stress. expansion...
We propose a low-profile and high-gain pattern-reconfigurable planar array antenna (PRPAA) based on digital coding characterization. The radiating elements in the PRPAA are designed ingeniously to realize "0" "1" elements. By dynamically encoding with different patterns, various radiation beams can be achieved switched real time one aperture. More importantly, for number direction of well predicted. fabricate such validate its digital-controllable patterns experimentally. This communication...
An artificial neural network-based synthesis model is proposed for the design of single-feed circularly-polarized square microstrip antenna (CPSMA) with truncated corners. To obtain training data sets, resonant frequency and <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">Q</i> -factor antennas are calculated by empirical formulae. Then size corners operation best axial ratio obtained. Using Levenberg-Marquardt (LM) algorithm, a three hidden...
ABSTRACT Metasurfaces provide an unprecedented capability for manipulating electromagnetic waves. In this study, a wideband and high‐gain folded transmit‐array antenna (FTA) based on 3‐bit Fabry–Perot transmission polarizer (FPTP) metasurface was proposed realized. The FTA comprises three key components: (1) top‐layer FPTP metasurface, (2) bottom‐layer miniaturized waveguide horn feed, (3) reflector array. adopts sandwich structure, integrating two orthogonal metallic grids with embedded...
Since nearly all studies concerning the approximate Crank-Nicolson perfectly matched layer (CN-PML) are limited to 2-D cases, a computationally efficient implementation that can be used truncate 3-D finite-difference time-domain (FDTD) lattices is presented in this article. More precisely, it based on CN direct-splitting (DS) scheme and bilinear transform (BT) method. This article fully exploit unconditional stability of standard CN-FDTD method free from Courant-Friedrich-Lewy (CFL) limit;...
Chiral molecules that do not superimpose on their mirror images are the foundation of all life forms earth. exhibit chiroptical responses, i.e., they have different electromagnetic responses to light circular polarizations. However, in natural materials, such as dichroism and optical rotation dispersion, intrinsically small because size a chiral molecule is significantly shorter than wavelength wave. Conventional technology for enhancing signal entails demanding requirements precise...
Oases support human activities in arid and semiarid regions, their stability is important for regional sustainable development water resource management. Water consumption the major factor affecting of oases. On basis remote sensing images, evaporation socioeconomic data, this study first evaluates Dunhuang Oasis against expansion an oasis irrigation district planting structure changes from 1987 to 2015. Next, it calculates a suitable area using water–energy balance theory. The results are...
In this paper, a broadband 2-D phased array based on 16 identical planar quasi-Yagi elements is presented. Firstly, modified antenna with wide beamwidth developed. Then, by dividing the "card" to independent elements, inserting metal fence between front-back which as high antenna's ground plane, mutual coupling mitigated. After constructed Wilkinson power divider and T/R modules, fully functional active implemented. Measured radiation patterns show that X-band prototype can scan ±30 degree...
We report an ultrawideband array antenna charactered by coding method. The Vivaldi is chosen as radiating element and the fed a 1 to 8 power divider network. desired states are realized position reverse of feeding ports network matched loading three optimized stepped circuited stubs. A prototype was fabricated measured results show working bandwidth approximately 85.7% (from 4 10 GHz). More importantly, accurate dual-beam frequency scanning feature demonstrated angle ranges from 21° 54°...
This paper is concerned with the effect of multipath fading on performance frequency hop (FH) time synchronization and resultant bit-error rate (BER) performance. The expressions mean value variance estimated FH timing error BER are derived for case Rayleigh fading, which characterized by a path-delay vector path-strength distribution vector. Somewhat surprisingly, our results show that in comparison single-path does not degrade performance, but rather improves them owing to diversity....
Abstract Collective behaviors efficiently impart benefits to a diversity of species ranging from bacteria humans. Fly larvae tend cluster and form coordinated digging groups under crowded conditions, yet understanding the rules governing this behavior is in its infancy. We primarily took advantage Drosophila model investigate cooperative foraging behavior. Here, we report that ‐related black soldier fly have evolved conserved strategy food foraging. Subsequently, investigated relative...
A high-gain and low-sidelobe coaxial collinear (COCO) array antenna is developed in the UHF band. The bandwidth of element reaches to 5.8% gain 6.054dB. To suppress grating lobes, a new method spacing considered confirmed. 42×15 designed with this method. lobes down -30dB. finally 38dB, sidelobe level less than -30dB, Half-Power Beam Width (HPBW) 2.16 degrees E-plane, 2.12 H plane.
As an alternative to trellis coding, a binary convolutional code is considered for use with such nonbinary modulation schemes as quadrature amplitude (QAM). A Gray used map the encoder output M-ary QAM constellation. The focus on design of 16-ary coded rate 3/4 punctured constraint length 7. quantized metric generation method proposed and shown be suboptimum compared direct unquantized metric. Impressive coding gains bandwidth efficiency are in comparison uncoded systems.< <ETX...
In this paper, a broadband 2-D phased array based on 16 identical planar quasi-Yagi elements is presented. Firstly, modified antenna with wide beamwidth developed. Then, by dividing the "card" to independent elements, inserting metal fence between front-back which as high antenna's ground plane, mutual coupling mitigated. After constructed Wilkinson power divider and T/R modules, fully functional active implemented. Measured radiation patterns show that X-band prototype can scan ±30 degree...
Introduces the characters, principle and design considerations of 36GHz conformal rectangular patch antenna on a cone. And linear array is designed. With application Ansoft HFSS based finite element method, simulated.
In this article, a geometric-phase (GP) metasurface-inspired phase shifter with linear and continual response has been introduced. The output can be adjusted by only rotating the GP metasurface. Physically distinct from traditional phase-shifting techniques relying on dynamical (DP), variation based manipulation of is independent signal transmission time, leading to desirably stable performances in working band. To elaborate idea, phased model implemented circular waveguide loading...
Coupled mode theory is an effective tool for analysis and synthesis of overmoded waveguides, but the inverse problem has not been solved yet. This paper completed iterative procedure to solve problem. The new method can design automatically fast various converters, transducers horn antennas with special radial pattern. Compared conventional methods, structure using more advantages in electromagnetic structural properties. Two examples are given: dual band TM01-TE11 converter smooth-wall feed...
Abstract Forward error correction (FEC) has become a general requirement for digital satellite communications. The dominant technology is the use of convolutional codes with Viterbi decoding. At MPR (Microtel Pacific Research), single‐chip VLSI implementation encoder and decoder constraint length 7 been completed recently. In design application FEC chip, several practical issues had to be addressed. These include determination maximum variation in path metric, generation encoded sequence...