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2018 12th International Symposium on Antennas, Propagation and EM Theory (ISAPE)最新文献

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Performance Analysis of a Massive MIMO System in Indoor Scenario 室内场景下大规模MIMO系统性能分析
2018 12th International Symposium on Antennas, Propagation and EM Theory (ISAPE) Pub Date : 2018-12-01 DOI: 10.1109/ISAPE.2018.8634053
Qichang Li, Liu Liu, C. Tao, Yanping Lu, T. Zhou, Zhongliang Wei
{"title":"Performance Analysis of a Massive MIMO System in Indoor Scenario","authors":"Qichang Li, Liu Liu, C. Tao, Yanping Lu, T. Zhou, Zhongliang Wei","doi":"10.1109/ISAPE.2018.8634053","DOIUrl":"https://doi.org/10.1109/ISAPE.2018.8634053","url":null,"abstract":"Massive multiple-input multiple-output (MIMO) is a potential candidate key technology for the fifth generation of wireless communication systems. In research to date, many investigations are based on theoretical channels with independent and identically distributed (i.i.d.) Rayleigh channels. In this paper, we focus on how a massive MIMO system performs in real propagation environments, specifically on channel performance of a realistic indoor scenario using large linear and circular antenna arrays. With massive MIMO, as the number of antennas increases and becomes much larger than the number of users, we get smaller singular value spreads and better orthogonality between user channels, what's more, the singular value spreads become more stable over channel realizations. The stability of singular value spread implies that bad channel conditions can be largely avoided. By analyzing the singular value spread of a massive MIMO system, it shows the measured channel can achieve performance close to the i.i.d. Rayleigh channel. So it can be conclude that the theoretical advantages of massive MIMO can also be harvest in real channel.","PeriodicalId":297368,"journal":{"name":"2018 12th International Symposium on Antennas, Propagation and EM Theory (ISAPE)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125571240","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
The Effect of Discharge Gap on Microwave Discharge 放电间隙对微波放电的影响
2018 12th International Symposium on Antennas, Propagation and EM Theory (ISAPE) Pub Date : 2018-12-01 DOI: 10.1109/ISAPE.2018.8634022
Zhongli Wang, Yaoyao Wang, J. Shan, Liang Zhu, Wendong Ma
{"title":"The Effect of Discharge Gap on Microwave Discharge","authors":"Zhongli Wang, Yaoyao Wang, J. Shan, Liang Zhu, Wendong Ma","doi":"10.1109/ISAPE.2018.8634022","DOIUrl":"https://doi.org/10.1109/ISAPE.2018.8634022","url":null,"abstract":"In order to study the effect of discharge gap on microwave discharge, the paper has carried out a simulation for the particles' density distribution, conductivity distribution and the resulting frequency drift in discharge gaps of different sizes. The results show that, the smaller the gap radius and the greater the gap depth, the higher the resonance frequency; the gap size affected the change of particle concentration during the resonance process; and the parameters of resonance characteristics were different at the equilibrium time.","PeriodicalId":297368,"journal":{"name":"2018 12th International Symposium on Antennas, Propagation and EM Theory (ISAPE)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129843720","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Particles Releasing Process Using Injections for the Exploration of Active Space Experiment 主动空间探索实验中粒子注入释放过程研究
2018 12th International Symposium on Antennas, Propagation and EM Theory (ISAPE) Pub Date : 2018-12-01 DOI: 10.1109/ISAPE.2018.8634350
Lei Li, Shou-tian Zhao, C. Han, Xiaoxia Lu, Mingming Chai, Jiawei Wang
{"title":"The Particles Releasing Process Using Injections for the Exploration of Active Space Experiment","authors":"Lei Li, Shou-tian Zhao, C. Han, Xiaoxia Lu, Mingming Chai, Jiawei Wang","doi":"10.1109/ISAPE.2018.8634350","DOIUrl":"https://doi.org/10.1109/ISAPE.2018.8634350","url":null,"abstract":"The techniques of Active Space Experiments (ASE) include the particles injection and electromagnetic beams emission into geospace from ground or space. Based on the mechanism of the interaction between dusty particles and plasmas in ionosphere, this paper analyses the effect of particle shape on the charge effects of plasma. The processes of superfine particles injection and particle clouds formation are also discussed. This paper presents some results from theoretical analysis, experimental results and numerical simulations. The results show that the well-organized local space structure of nanoscale slender particles cloud display scattering effect to electromagnetic waves along with stronger electron adsorption capacity. The results also show that the nanoscale particles behave the shorter relaxation time than the microscale particles and in mesosphere a particles cloud of 800 meter scale can be produced using the injections method.","PeriodicalId":297368,"journal":{"name":"2018 12th International Symposium on Antennas, Propagation and EM Theory (ISAPE)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129246527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
SAL imaging method based on Kirchhoff approximation 基于Kirchhoff近似的SAL成像方法
2018 12th International Symposium on Antennas, Propagation and EM Theory (ISAPE) Pub Date : 2018-12-01 DOI: 10.1109/ISAPE.2018.8634143
Chenglin Han, Yanhui Li, Zhensen Wu
{"title":"SAL imaging method based on Kirchhoff approximation","authors":"Chenglin Han, Yanhui Li, Zhensen Wu","doi":"10.1109/ISAPE.2018.8634143","DOIUrl":"https://doi.org/10.1109/ISAPE.2018.8634143","url":null,"abstract":"Synthenic aperture lidar(SAL) has been widely used for Its high-precision image of remote targets. In order to study the influence of different shapes and different roughness targets on SAL image in Thz band, the SAL images of different with different roughness are numerically simulated in this paper. Rough surface is generated by monte-calro method, and rough object modeling by rough surface. By using Kirchhoff approximation(KA) the back-scattering filed of a rough object is obtained, and the SAL image of a rough object is obtained by the backscattering filed at different azimuth angles and frequencies. In this paper, the SAL image of simple plate target, circular and complex target are simulated, the result of SAL image show that the image can reflect not only the shape of the target but also the roughness of the target, it is specifically analyzed in this paper. During the imaging, different frequency-domain width, frequency-domin sampling accuracy and angular sampling accuracy will affect the SAL image. The wider frequency-domin width, the higher the accuracy, the better the imaging result, but only need to meet the requirements within a reasonable range, this paper analyzed that.","PeriodicalId":297368,"journal":{"name":"2018 12th International Symposium on Antennas, Propagation and EM Theory (ISAPE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129486607","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Single Feed Broadband Circularly Polarized Antenna With Parasitic Patch 带寄生贴片的单馈宽带圆极化天线
2018 12th International Symposium on Antennas, Propagation and EM Theory (ISAPE) Pub Date : 2018-12-01 DOI: 10.1109/ISAPE.2018.8634278
Zepei Jiang, Fushun Zhang
{"title":"Single Feed Broadband Circularly Polarized Antenna With Parasitic Patch","authors":"Zepei Jiang, Fushun Zhang","doi":"10.1109/ISAPE.2018.8634278","DOIUrl":"https://doi.org/10.1109/ISAPE.2018.8634278","url":null,"abstract":"A single feed broadband circularly polarized (CP) antenna is proposed. The antenna is composed of single feeding loop structure which provides sequential phase, four driven patches, and one parasitic patches. The driven patches, which are capacitively coupled by the feeding structure, generate one CP mode due to the sequentially rotated structure. One parasitic patch produces additional CP mode. By combining single feeding loop structure with four driven patches and one parasitic patch, the axial ratio (AR) bandwidth is greatly broadened. The results of the simulation show that the antenna achieves a broad impedance bandwidth of 20.7% (4.38–5.39 GHz) and a 3-dB AR bandwidth of 14.2% (4.65–5.36 GHz). In addition, the proposed antenna has a flat gain within the operating frequency band and a size of $boldsymbol{Phi} 0.97boldsymbol{lambda}_{0}times 0.15boldsymbol{lambda}_{0}$ at 5.0 GHz.","PeriodicalId":297368,"journal":{"name":"2018 12th International Symposium on Antennas, Propagation and EM Theory (ISAPE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121196698","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
A Dual Frequency Fabry-Perot Antenna Based on Metamaterial Lens 基于超材料透镜的双频法布里-珀罗天线
2018 12th International Symposium on Antennas, Propagation and EM Theory (ISAPE) Pub Date : 2018-12-01 DOI: 10.1109/ISAPE.2018.8634017
Jian Yang, F. Xu, Siyuan Yao
{"title":"A Dual Frequency Fabry-Perot Antenna Based on Metamaterial Lens","authors":"Jian Yang, F. Xu, Siyuan Yao","doi":"10.1109/ISAPE.2018.8634017","DOIUrl":"https://doi.org/10.1109/ISAPE.2018.8634017","url":null,"abstract":"A Fabry-Perot resonator antenna (FPRA) fed by air-coupled patch antenna with metamaterial lens is presented in this paper. The Fabry-Perot resonator consists of a partially reflective surface (PRS) formed by one metamaterial substrate, one layer of frequency selective surface (FSS) and metal ground plane. That two layers of substrate stuck together as lens above the feed antenna is to construct dual frequency working and to enhance the directive performance. The influence of a left-handed metamaterial (LHM) substrate attached to the FSS is illustrated. From the results obtained, it is noted that in the presence of the LHM substrate, the Fabry-Perot resonator antenna is able to work with dual frequency, has an electrically small effect and a radiation enhancement at 12.8GHz and 13.2GHz","PeriodicalId":297368,"journal":{"name":"2018 12th International Symposium on Antennas, Propagation and EM Theory (ISAPE)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127115114","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Microwave technology used for plasma diagnostic in complicated situations 微波技术用于复杂情况下的等离子体诊断
2018 12th International Symposium on Antennas, Propagation and EM Theory (ISAPE) Pub Date : 2018-12-01 DOI: 10.1109/ISAPE.2018.8634218
J. Yao, Zhi Yu, C. Yuan, Zhongxiang Zhou, Hailu Wang, Zebin Li
{"title":"Microwave technology used for plasma diagnostic in complicated situations","authors":"J. Yao, Zhi Yu, C. Yuan, Zhongxiang Zhou, Hailu Wang, Zebin Li","doi":"10.1109/ISAPE.2018.8634218","DOIUrl":"https://doi.org/10.1109/ISAPE.2018.8634218","url":null,"abstract":"In this paper, the microwave technology has been applied to measure the plasma parameters in large-volume AC glow discharge with coaxial gridded hollow electrodes. By measuring the phase shift of microwave through the plasma, the characteristics of the plasma density changing with the input power in hollow ac discharge plasma has been confirmed. The phase shift of the microwave is determined by vector network analyzer (PNA-N5234A) with antennas, and the selected microwave frequency is 30GHz. Then, the experimental results are compared with the theoretical results and are in good agreement. Additionally, using the improved probe technology, the plasma parameters also are obtained by probe diagnostics. And the probe results are compared to the microwave technology, which indicates that in the AC glow discharge the microwave diagnostic is more stable and accurate.","PeriodicalId":297368,"journal":{"name":"2018 12th International Symposium on Antennas, Propagation and EM Theory (ISAPE)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127231679","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Efficient High Frequency Solver for Calculating the Scattered Fields from the Electrically Large Scatterers 计算电大散射体散射场的高效高频求解器
2018 12th International Symposium on Antennas, Propagation and EM Theory (ISAPE) Pub Date : 2018-12-01 DOI: 10.1109/ISAPE.2018.8634362
N. Zhang, A. Wu, Yu Mao Wu, Yaqiu Jin
{"title":"The Efficient High Frequency Solver for Calculating the Scattered Fields from the Electrically Large Scatterers","authors":"N. Zhang, A. Wu, Yu Mao Wu, Yaqiu Jin","doi":"10.1109/ISAPE.2018.8634362","DOIUrl":"https://doi.org/10.1109/ISAPE.2018.8634362","url":null,"abstract":"In this work, the fast physical optics (FPO) method is proposed to calculate the scattered fields from the coated scatterers. Different from the plane discretization, the quadratic patches are used to model the surface of the scatterers. Hence the number of the meshes would reduce greatly. With adopting the Lagrange interpolation and the closed-form formulation, the scattered fields could be represented as the analytical formulations. Numerical results demonstrate the accuracy and the efficiency of this method.","PeriodicalId":297368,"journal":{"name":"2018 12th International Symposium on Antennas, Propagation and EM Theory (ISAPE)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125353736","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Low Profile SIW Cavity-Backed Magneto-Electric Dipole with Wide Beamwidth Radiation Patterns 具有宽波束宽度辐射模式的低轮廓SIW腔背磁电偶极子
2018 12th International Symposium on Antennas, Propagation and EM Theory (ISAPE) Pub Date : 2018-12-01 DOI: 10.1109/ISAPE.2018.8634259
Guanghua Duan, Fushun Zhang
{"title":"Low Profile SIW Cavity-Backed Magneto-Electric Dipole with Wide Beamwidth Radiation Patterns","authors":"Guanghua Duan, Fushun Zhang","doi":"10.1109/ISAPE.2018.8634259","DOIUrl":"https://doi.org/10.1109/ISAPE.2018.8634259","url":null,"abstract":"Based on the complementary antenna concept of combining an electric dipole with a magnetic dipole, a linearly polarized substrate integrated waveguide(SIW) cavity-backed magneto-electric(ME) dipole antenna has been proposed. This antenna has wide beamwidth radiation patterns. The half-power beamwidths (HPBW) are 175° in E-plane and 130° in H-plane. Besides, the proposed antenna has a low profile of about $0.03 lambda_{0}$ ($lambda_{0}$ is the space wavelength at center operating frequency) with good radiation performances across the impedance bandwidth including a stable gain, symmetrically unidirectional radiation patterns in both of the two principal planes and especially, a significantly low cross polarization. The antenna is designed, fabricated and measured. Measured results show a good agreement with the simulated ones.","PeriodicalId":297368,"journal":{"name":"2018 12th International Symposium on Antennas, Propagation and EM Theory (ISAPE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121026468","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Optimization Analysis of Non-Uniform Array Antennas for Millimeter Waves 毫米波非均匀阵列天线的优化分析
2018 12th International Symposium on Antennas, Propagation and EM Theory (ISAPE) Pub Date : 2018-12-01 DOI: 10.1109/ISAPE.2018.8634041
S. Tuan
{"title":"Optimization Analysis of Non-Uniform Array Antennas for Millimeter Waves","authors":"S. Tuan","doi":"10.1109/ISAPE.2018.8634041","DOIUrl":"https://doi.org/10.1109/ISAPE.2018.8634041","url":null,"abstract":"The non-uniformly spaced sparse array antenna can save a lot of cost, and adopts the method that the antenna array element is thinned on a certain aperture to realize the array design, and can obtain higher gain through fewer antenna array elements, thereby achieving higher resolution which in turn simplifies the structure and reduces the cost, has therefore become a hot topic of research. This paper proposed genetic algorithm to analyze the optimization characteristics of uniform and non-uniformly spaced sparse array antennas for millimeter wave.","PeriodicalId":297368,"journal":{"name":"2018 12th International Symposium on Antennas, Propagation and EM Theory (ISAPE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124361159","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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