A5039969407- Antenna Design and Analysis
- Advanced Antenna and Metasurface Technologies
- Interconnection Networks and Systems
- Microwave Engineering and Waveguides
- Embedded Systems Design Techniques
- Energy Harvesting in Wireless Networks
- VLSI and FPGA Design Techniques
- Face and Expression Recognition
- Geochemistry and Elemental Analysis
- Advanced Memory and Neural Computing
- Remote-Sensing Image Classification
- Medical Imaging and Analysis
- Radiomics and Machine Learning in Medical Imaging
- Geomagnetism and Paleomagnetism Studies
- Geology and Paleoclimatology Research
- Advanced Algorithms and Applications
- Medical Image Segmentation Techniques
- graph theory and CDMA systems
- Parallel Computing and Optimization Techniques
- Advanced Computing and Algorithms
- Network Security and Intrusion Detection
- Antenna Design and Optimization
- Multi-Criteria Decision Making
- Advanced Clustering Algorithms Research
- Artificial Immune Systems Applications
Xi’an University of Posts and Telecommunications
2019
Xidian University
2008-2015
University of Electronic Science and Technology of China
2015
Xi'an University of Science and Technology
2008
Northwestern Polytechnical University
2005
A frequency-reconfigurable coplanar-waveguide (CPW) fed monopole antenna using switchable stubbed ground structure is presented.Four PIN diodes are employed in the stubs stretching from to make reconfigurable three operating modes: a single-band mode (2.4-2.9GHz), dual-band (2.4 2.9 GHz/5.09-5.47GHz) and triple-band .The resonating at 2.4 GHz, while produce other frequency bands covering number of wireless communication systems, including WLAN, WiMAX, Cband, ITU.Furthermore, an optimized...
A broadband circularly polarized (CP) slot antenna array fed by an asymmetric coplanar waveguide (CPW) with stepped and inverted T-shaped strips is proposed. Using four square elements sequential rotation oblique feed a modifled sequential-phase (SP) feeding network, CP can be achieved. The measured i10dB re∞ection coe-cient bandwidth 3dB axial ratio (AR) are 55.4% (1.63{2.88GHz) 58% (1.65{3GHz), respectively. Good radiation characteristics gain more than 6dBic over the operating band...
A folded printed quadrifllar helical antenna (FPQHA) with an integrated and compact feeding network is proposed. The axial length of the proposed miniaturized about 54.7% than conventional PQHA by folding helix arms into several elements. T-junction power divider combining two Wilkinson dividers utilized to feed antenna. fabricated prototype FPQHA using presented. measured positive gain bandwidth covers 380{430MHz re∞ection coe-cient below i20dB, ratio 1.5dB a half-power beamwidth 120 - ....
A broadband printed quadrifllar helical antenna (BPQHA) integrated with a feeding network for satellite communications is proposed. Using multiple arm technique, satisfactory characteristics over wide bandwidth are realized. To feed the antenna, novel compact composed of frequency independent 180 - out-of-phase power divider, two Wilkinson dividers and 90 phase shifters designed. The measured boresight gain remains positive re∞ection coe-cient lower than i11dB approximately 26%. axial ratio...
A single‐arm helical antenna with the width of arm varying periodically for a circularly polarised (CP) tilted beam is introduced. The proposed radiates CP beam, when following two conditions are met: (i) circumference >4 λ 0 /3 ( wavelength in free space at centre frequency) and (ii) varies periodically. designed procedure reveals that maximum radiation direction not sensitive to change frequency. simulated measured results show θ max = 32°. 10 dB return loss bandwidth 12.8% from 2.33...
A miniature folded printed quadrifllar helical antenna (FPQHA) using a novel compact feeding network is proposed. Folding and meandering techniques are used to obtain 66% of size reduction for the axial length antenna. an out-of-phase power divider based on double-sided parallel-strip lines Wilkinson designed. fabricated prototype FPQHA employing presented. The measured positive gain bandwidth from 380MHz 425MHz with re∞ection coe-cient less than i20dB ratio below 2dB. maximum 3.08dBic at...
A broadband circularly polarized (CP) slot antenna array fed by a coplanar waveguide (CPW) is proposed. fan-shaped feed line and three L-shaped grounded strips are embedded in the square element to enlarge bandwidth. Simulated results show that can obtain wide impedance bandwidth with i10dB re∞ection coe-cient covering 1.7{6.3GHz (about 115% relative bandwidth) 3dB axial ratio (AR) 2.6{5.2GHz 66%). Using four elements sequential phase feed, measured of be enhanced 105% (1.65{5.35GHz) 71.3%...
With the feature size of semiconductor technology reducing and intellectual properties (IP) cores increasing, on chip communication architectures have a great influence performance area System-on-Chip (SoC) design. Network-on-Chip (NoC) has been proposed as promising solution to complex SoC problems widely accepted by academe industry. This paper discusses how choose suitable topology node encoding scheme for NoC, proposes two-dimensional plane code based Johnson Code combination Torus with...
A new printed helical antenna (PHA) for a circularly polarized (CP) titled beam is proposed. With the introduction of multiple sections technique into PHA's arm, radiates CP beam. To feed antenna, matching network composed 50 Ω microstrip transmission line and two symmetrical λ0/8 open stubs designed. The simulated measured results show that PHA tilted with maximum radiation direction (θmax, ϕmax )=( 32 ◦ , 135 ) at f0 =2 .11 GHz. bandwidth reflection coefficient lower than −10 dB 11.8%...
Network topology and routing are key problems for the design of network on chip (NoC). The paper discusses how to choose suitable node encoding scheme NoC, proposes a two-dimensional plane code based Johnson Code by combination with corresponding coding. coding implies relation between neighbouring nodes their links global information routing. Utilizing code, improved algorithm X- Y is presented, which implemented only two or three logic operations in middle nodes. experimental results show...
Node coding and routing methods are important to the design of network on chip (NoC). By combination topology with corresponding, a two-dimensional code based Johnson in torus is proposed. The node implies relation between neighbouring nodes has good scalable characteristic. two for compressing also presented reduce storage space address increase utilization rate channel bandwidth. improved algorithm X-Y structure designed. experimental results show can simplify implementation NoC, decrease...
Hypercubes utilizing Gray Code are used widely as the interconnection networks of parallel computer systems. But an n-dimensional hypercube has 2n nodes, when size a network have been increases added nodes must be 2i times more than its and increase degree , which affects scalable characteristic. The paper puts forward based on Combination with Johnson Code(GJCode(s, t)). GJCode(s, t) flexible characteristics important properties both is there exists link between two only if their binary...
Hypercubes utilizing Gray Code are used widely as the interconnection networks of parallel computer systems. But an n-dimensional hypercube has 2 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">n</sup> nodes, which limits scalability when degree nodes is invariable. The paper puts forward a scalable based on Combination with Johnson (GJCode (s, t)). GJCode t) good characteristics and important properties both Code. In t), there two adjustable...