A5100606146- Antenna Design and Analysis
- Microwave Engineering and Waveguides
- Advanced Antenna and Metasurface Technologies
- Aluminum Alloys Composites Properties
- Magnesium Alloys: Properties and Applications
- Conducting polymers and applications
- Energy Harvesting in Wireless Networks
- Full-Duplex Wireless Communications
- Electrochemical sensors and biosensors
- Cooperative Communication and Network Coding
- Physical Unclonable Functions (PUFs) and Hardware Security
- Analytical Chemistry and Sensors
- Metal and Thin Film Mechanics
- Electrocatalysts for Energy Conversion
- RFID technology advancements
- Fuel Cells and Related Materials
- Radio Frequency Integrated Circuit Design
- Advanced Wireless Communication Technologies
- Analog and Mixed-Signal Circuit Design
- VLSI and Analog Circuit Testing
- Underwater Vehicles and Communication Systems
- Computational Fluid Dynamics and Aerodynamics
- Advancements in PLL and VCO Technologies
- Cryptographic Implementations and Security
- Advanced Chemical Sensor Technologies
Qingdao University of Technology
2014-2024
Qingdao University of Science and Technology
2017-2024
Hstar Technologies (United States)
2023
Technical University of Munich
2020-2022
Capital Medical University
2021
Beijing Chao-Yang Hospital
2021
State Key Laboratory of Metastable Materials Science and Technology
2019-2020
Yanshan University
2019-2020
Beijing University of Technology
2017-2020
ORCID
2018
A dual circularly polarized (CP) magnetoelectric dipole antenna is presented in this article. The dual-CP was devised to form a circular ring shape and fabricated using 3-D printing technology. To overcome the conflict between high (broadside) gain wide (half-power) beamwidth, new beamwidth broadening technique proposed. Twelve metacolumns were placed evenly along circumference close ring-shaped dipole. design approach elaborated, where number size of meta-columns decided according curves....
An effective, large-scale synthesis strategy for producing graphene nanoribbons (GNRs) with a nearly 100% yield has been proposed using stepwise, solution-based, lengthwise unzipping carbon nanotube (CNT) method. Detailed Raman and X-ray photoelectron spectroscopy (XPS) analysis suggest that GNRs tunable density of oxygen-containing functional groups on the GNR surfaces can be synthesized by adjusting oxidant concentration during CNT unzipping. The electrochemical characterization reveals...
In this paper, we introduce a reconfigurable artistic patch antenna with unidirectional circular-polarization (CP) radiation. The novel geometry composed of Chinese character Meng shaped and dual L-shaped feeding probes that are connected to PIN-diode-based switching circuit. simulated experimental results show the proposed achieves operating bandwidth from 2.4 2.5 GHz covers dynamically 14 channels IEEE 802.11/b/g/b/ax. By L-probes, either left-handed CP or right-handed can be generated...
This contribution presents a novel design of circularly polarized (CP) array antenna composed the Chinese character-shaped artistic patches: Zhong and Guo. Namely, CP Zhong-shaped patch Guo-shaped join together via feeding network to form two-element array. is country name China printed in boldfaced SimHei font. Attributed its nature, this first that breaks principles array, wherein, first, nonidentical radiating elements are used, second, nonrotated excited with quadrature phases. The...
Platinum-group-metal-free (PGM-free) catalysts are currently considered as potential oxygen-reduction-reaction (ORR) to replace costly and supply-limited platinum at the cathode side of proton exchange membrane fuel cells (PEMFCs). Extensive research efforts have led substantial progress with regards ORR activity PGM-free catalysts, but there is uncertainty about dependence mass on catalyst loading. In this study, effect loading investigated by means rotating disk electrode measurements well...
A decoupled aeromechanical system based on an advanced frequency-domain computational fluid dynamics finite element to CFD solver with fully nonlinear capability is presented that allows resonant vibration predictions be routinely performed during the design process. new energy method solves blade response without knowledge of original modeshape scales. robust mesh interface has been developed for industrial use can accurately deal differences in geometry, low density, and high gradients....
In this article, we present a comparative study into the directional sensitivity of patch-antenna-based strain sensors. Two linearly-polarized (LP) patch sensors vs circularly-polarized (CP) sensor with identical configurations are demonstrated. The occurred in real structures is commonly uncertain, usefulness LP-patch becomes limited. Like conventional gauges, it can only be used if direction known beforehand. Therefore, nearly-square CP-patch for multi-directional monitoring proposed here....
With the increase in working time, geometric errors of a Horizontal Machining Center (HMC) will also under load, temperature, and wear conditions, decreasing machining accuracy. As HMC is high-accuracy machine tool with high nonlinear system, there complex coupling relationship between errors. Therefore, how to thoroughly evaluate ability maintain its accuracy extension time an important way for control quality. In this paper, defined as reliability, that is, specified can work normally...
With the rapid application growing of internet and wireless network, information security becomes significant to protect commerce secret personal privacy. Encryption algorithm plays a crucial role for guarantee. In this paper, we evaluate performance two symmetric key encryption algorithms: CAST RC5 commonly used network data encryption. We analyzed security, evaluated speed power consumption both algorithms. Experimental results show that runs faster than while consumes less power, which is...
In this paper, the improved design of a small automatic-identification-system (AIS) based man overboard (MOB) device is described. The one state-of-the-art maritime vehicular technologies and has been widely used in marine vehicles for search rescue (SAR) purposes. Similar devices have available market years; however, methodology hardware circuitries never exposed literature. This paper first reviews basic principles Gaussian minimum-shift keying modulation direct digital frequency synthesis...
With the increasing risk of IP reuse in System on Chip (SoC) design, intellectual property (IP) techniques becomes one most important issues. Compare with watermarking, fingerprinting is a more effective method because not only protects owner's benefits but also user's rights. In this paper, we firstly propose multilevel for protection. typical field programmable gate array (FPGA) design flow, first embed watermarks into FPGA at netlist level by manipulating LUTs. When core compiled...