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1. A Hepta-Band Monopole Antenna With Low Nonground Height for LTE/WWAN Mobile Phone | |||
Wen Jiang | |||
Electrics, Communication and Autocontrol Technology 18 April 2017 | |||
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Abstract:An hepta-band antenna for mobile phones with the size of 80mm×5mm×4mm is proposed and studied. The proposed antenna is composed of a coupled line, a monopole stub and a grounded stub. By using the multi-mode method, the lower band(824-960MHz) and the higher band (1710-2690MHz) are covered. The working mechanism is analysed by dividing the proposed antenna into three parts as reference antenna. The simulated -6dB impedance bandwidths are 150MHz (830-980MHz) and 0.98GHz (1700MHz-2680MHz) at the lower band and higher band, respectively. The proposed antenna is capable of covering the GSM850, GSM900, GSM1800, GSM1900, UMTS, LTE2300,and LTE2500 bands. | |||
TO cite this article:Wen Jiang. A Hepta-Band Monopole Antenna With Low Nonground Height for LTE/WWAN Mobile Phone[OL].[18 April 2017] http://en.paper.edu.cn/en_releasepaper/content/4725417 |
2. A Reconfigurable Proximity Coupled Antenna with Frequency and Polarization Switching Capabilities | |||
Wen Jiang | |||
Electrics, Communication and Autocontrol Technology 18 April 2017 | |||
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Abstract:A compact reconfigurable proximity coupled antenna with frequency and polarization switching capabilities is presented in this paper. The frequency and polarization switching capabilities are realized by using six PIN diodes across an eye-shaped slot on the ground plane. The proposed antenna has six different operation status including linear polarization (LP), right-hand circular polarization (RHCP) and left-hand circular polarization (LHCP) wave. Due to the frequency and polarization switching capabilities, the overall capacity of the antenna in the wireless transmissions could be potentially enlarged. | |||
TO cite this article:Wen Jiang. A Reconfigurable Proximity Coupled Antenna with Frequency and Polarization Switching Capabilities[OL].[18 April 2017] http://en.paper.edu.cn/en_releasepaper/content/4725420 |
3. Deduction of Electromagnetic Fields of a Vortex Radio Beam Based on Circular Antenna Array | |||
Feng Xiaomeng,Ji Yanli,Wang Chaowei,Wang Weidong | |||
Electrics, Communication and Autocontrol Technology 17 October 2016 | |||
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Abstract:This paper demonstrates that the circular antenna array with its nth element dipole phased by an accurate setting can generate the vortex radio beams possessing orbital angular momentum (OAM). Theoretical formulations of its radiation far-field are deduced in the spherical coordinate system and are used to analyze radiation pattern and phase distribution of vortex radio beams. The model of a simulated configuration for circular antenna array is proposed and conducted to validate the theoretical results using 4nec2. Simulation results match well with the theoretical analysis. Both calculated results and simulation results show vortex radio beams possess amplitude null on radiation pattern. | |||
TO cite this article:Feng Xiaomeng,Ji Yanli,Wang Chaowei, et al. Deduction of Electromagnetic Fields of a Vortex Radio Beam Based on Circular Antenna Array[OL].[17 October 2016] http://en.paper.edu.cn/en_releasepaper/content/4706784 |
4. A broadband flexible metamaterial absorber with a transparent window | |||
WANG Lingling,LIU Shaobin,KONG Xiangkun | |||
Electrics, Communication and Autocontrol Technology 26 May 2016 | |||
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Abstract:A novel, broadband flexible metamaterial absorber is designed. The absorber is consisted of loaded high-impedance surfaces (HIS) on a flexible polyethylene terephthalate (PET) substrate and the back-metal layer replaced with a polarization-insensitive frequency-selective surface separated by a dielectric layer. The proposed absorber can obtain the bandwidth with the reflectivity below ?10dB in the frequency range of 7-16GHz with a transparent window at 2.9 GHz. Losses in the high-impedance surface are introduced by printing the periodic pattern through resistive inks and hence avoiding the typical soldering of lumped resistors. | |||
TO cite this article:WANG Lingling,LIU Shaobin,KONG Xiangkun. A broadband flexible metamaterial absorber with a transparent window[OL].[26 May 2016] http://en.paper.edu.cn/en_releasepaper/content/4691304 |
5. A Fast Time-Domain Volume Surface Integral Equation Solver Using the Equivalent Dipole Moment | |||
HU Yanlong,LI Zhaolong,CHEN Rushan | |||
Electrics, Communication and Autocontrol Technology 25 May 2016 | |||
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Abstract:The equivalent dipole moment (EDM) method is introduced into the marching-on-in-time (MOT) solver of time domain volume surface integral equation (VSIE) for the analysis of transient electromagnetic scattering from the composite structures comprising PEC and dielectric materials. It is the extension of frequency domain EDM to the time domain. Numerical examples demonstrate the efficiency of the proposed method. | |||
TO cite this article:HU Yanlong,LI Zhaolong,CHEN Rushan. A Fast Time-Domain Volume Surface Integral Equation Solver Using the Equivalent Dipole Moment[OL].[25 May 2016] http://en.paper.edu.cn/en_releasepaper/content/4694997 |
6. A Novel Broadband Absorber with Honeycomb Lattices Based on the Flexible Metamaterial | |||
HU Yuehong,LIU Shaobin,KONG Xiangkun | |||
Electrics, Communication and Autocontrol Technology 21 May 2016 | |||
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Abstract:A novel, broadband flexible metamaterial absorber is designed. The absorber is consisted of loaded high-impedance Surface. In this paper, a monolayer high-impedance surface broadband absorber with honeycomb lattices based on the flexible metamaterial are designed. The simulated results are shown that the absorption bandwidth is from 13 to 19.1 GHz, also it can be observed that the simulated absorption exceeds 95% almost from13.1 to 19GHz and the absorber is polarization insensitive for the incident wave under the normal incidence. Comparing with the absorber with traditional square lattices, the proposed absorber has advantages in the properties of absorbing, when it is bended . Even the bended absorber with honeycomb lattices has better absorption than the plane absorber. The proposed absorber can be worked as a polarization insensitive, conformal and broadband metamaterial absorber in radomes, cloaking and other microwave applications. | |||
TO cite this article:HU Yuehong,LIU Shaobin,KONG Xiangkun. A Novel Broadband Absorber with Honeycomb Lattices Based on the Flexible Metamaterial[OL].[21 May 2016] http://en.paper.edu.cn/en_releasepaper/content/4691385 |
7. A Wideband Dual-Polarized Antenna with Vertically-Extruded Ring for Base Station Applications | |||
ZHANG Guanxi,SUN Baohua | |||
Electrics, Communication and Autocontrol Technology 13 May 2016 | |||
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Abstract:This paper presents a novel wideband dual-polarized antenna for 2G/3G/4G, WLAN and WiMAX base station applications. By using the curve parasitic elements and vertically-extruded square ring, wide impedance bandwidth and stable radiation patterns are obtained. Both measured and simulated results show that the proposed antenna achieves 77.5% impedance bandwidth (VSWR<2) from 1.69-3.83 GHz, with a port isolation higher than 23 dB. Moreover, stable radiation patterns with a peak gain of 7 dBi - 9 dBi, a cross polarization under -17 dB and a front-to-back ratio better than 15 dB are obtained across the operating band. | |||
TO cite this article:ZHANG Guanxi,SUN Baohua. A Wideband Dual-Polarized Antenna with Vertically-Extruded Ring for Base Station Applications[OL].[13 May 2016] http://en.paper.edu.cn/en_releasepaper/content/4690289 |
8. Effective Solution of Time-Domain Magnetic Field Integral Equation for Transient Electromagnetic Scattering by Conductors | |||
WAN Guochun, ZHANG Yunjin,Jie Zhang,Mei Song Tong | |||
Electrics, Communication and Autocontrol Technology 16 December 2015 | |||
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Abstract:Transient electromagnetic (EM) scattering by conductors is formulated by time-domain magnetic field integral equation (TDMFIE). The TDMFIE is important because the time-domain combined field integral equation involves it and also it appears in the time-domain integral equations of penetrable media as an operator. The TDMFIE is usually solved by combining the method of moments (MoM) in spatial domain and a march-on in time (MOT) scheme in temporal domain. This paper proposes a different approach in which a Nystr"{o}m scheme is used in spatial domain while a Galerkin method (GM) with Laguerre basis and testing functions is employed in temporal domain. The approach includes the merits of Nystr"{o}m scheme in spatial domain and also fully eliminates the late-time instability of the MOT. Moreover, the Laguerre basis function can naturally enforce the causality of signals and the GM can simplify the time-domain implementation. Numerical examples for transient EM scattering by typically-shaped conductors are presented to illustrate the approach and its robustness has been demonstrated. | |||
TO cite this article:WAN Guochun, ZHANG Yunjin,Jie Zhang, et al. Effective Solution of Time-Domain Magnetic Field Integral Equation for Transient Electromagnetic Scattering by Conductors[OL].[16 December 2015] http://en.paper.edu.cn/en_releasepaper/content/4671791 |
9. A Wide Bandgap Slot Fractal UC-EBG Based on Moore Space-Filling Geometry | |||
Zhang Jing,Tian Huiping | |||
Electrics, Communication and Autocontrol Technology 18 September 2015 | |||
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Abstract:In this paper A wide bandgap slot fractal uniplanar compact electromagnetic bandgap (UC-EBG) structure based on 3rd iteration of Moore space-filling geometry (MSF-UC-EBG) is proposed. By changing the dimensions of the structureand the substrate materials, different bandgap characteristics can be obtained. In this paper, we design two kinds of MSF-UC-EBG structures, fabricated on FR4 and RogersRO3010 substrate, denoted as FR4_EBG and Rogers_EBG, respectively. Two wide bandgaps of 1.43-5.89 GHz (relative bandwidth 121.8%) and 1.09-4.57 GHz (relative bandwidth 122.9%) are achieved when 5 MSF-UC-EBG unit cells are arranged periodically. The measurements agree well with simulations. | |||
TO cite this article:Zhang Jing,Tian Huiping. A Wide Bandgap Slot Fractal UC-EBG Based on Moore Space-Filling Geometry[OL].[18 September 2015] http://en.paper.edu.cn/en_releasepaper/content/4654944 |
10. A Novel Dual-Band Bandpass Filter Using Composite Metamaterial Resonators | |||
JIN Yuting,SI Li-Ming,XU Zhan,ZHANG Qingle,HUANG Hui,HU Weidong,WU Yuming,Wei-Hua Yu,LV Xin | |||
Electrics, Communication and Autocontrol Technology 29 March 2015 | |||
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Abstract:A novel dual-band bandpass filter is proposed with metamaterial-inspired transmission line structure. The filter is composed of one outer square closed-ring resonator (SCRR) and two inner electric-LC (ELC) resonators developed on conductor-backed coplanar waveguide (CBCPW). Through full-wave electromagnetic simulations based on finite-element method, it is shown that both passbands can be individually contorted by tuning the structural parameters of the composite metamaterial resonators. The complex dispersion relations are derived from the scattering parameters to better understand the mechanism. Two passbands of the filter are centered at 8.76 GHz and 11.04 GHz, with 3-dB bandwidths of 130 MHz and 290 MHz, respectively. The simulated and measured results are in good agreement. | |||
TO cite this article:JIN Yuting,SI Li-Ming,XU Zhan, et al. A Novel Dual-Band Bandpass Filter Using Composite Metamaterial Resonators[OL].[29 March 2015] http://en.paper.edu.cn/en_releasepaper/content/4636972 |
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