Pub Date : 2013-07-21DOI: 10.1109/CSQRWC.2013.6657425
Zhou Chao, Zhang Xiao-kuan, Zhuang Ya-qiang, Zhang Chen-xin, Liu Cang
In view of the application problem of the tactic maneuver of stealth target, the electromagnetic model of one typical stealth target is established and all airspace static RCS is gained in firstly. Secondly, the relationship between tactic maneuver and the line of sight of radar is analyzed. And then the dynamic RCS series is exhibited through different yaw, pitch and rolling maneuver. Finally, the detection probability calculation model is structured and the influence on detection probability is simulated through MATLAB programs when tactic maneuver is adopted by stealth target. Also the conclusions are generally obtained through simulation and the simulation provided a method foundation and experiment evidence for application of tactic maneuver of stealth aircraft.
{"title":"Research on the influence of tactic maneuver of target detection","authors":"Zhou Chao, Zhang Xiao-kuan, Zhuang Ya-qiang, Zhang Chen-xin, Liu Cang","doi":"10.1109/CSQRWC.2013.6657425","DOIUrl":"https://doi.org/10.1109/CSQRWC.2013.6657425","url":null,"abstract":"In view of the application problem of the tactic maneuver of stealth target, the electromagnetic model of one typical stealth target is established and all airspace static RCS is gained in firstly. Secondly, the relationship between tactic maneuver and the line of sight of radar is analyzed. And then the dynamic RCS series is exhibited through different yaw, pitch and rolling maneuver. Finally, the detection probability calculation model is structured and the influence on detection probability is simulated through MATLAB programs when tactic maneuver is adopted by stealth target. Also the conclusions are generally obtained through simulation and the simulation provided a method foundation and experiment evidence for application of tactic maneuver of stealth aircraft.","PeriodicalId":355180,"journal":{"name":"2013 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116483622","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}
Pub Date : 2013-07-21DOI: 10.1109/CSQRWC.2013.6657378
Cao Le, Wei Bing, Zhao-Hang Peng, He Qiong
The far field formulation of an arbitrarily oriented electric dipole located at the interface of layered anisotropic half space is deduced based on the reciprocity theorem. Then, considering the optical path difference of the directed wave and reflected wave, the formulation of the electric dipole located above the interface of layered anisotropic half space is discussed. The General Transmitting Matrix (GTM) method is used to compute the reflection coefficients of anisotropic layered half space. Finally, numerical example of the electric dipole located at the interface of anisotropic half space is given. The numerical results show that this method can be used in the fast computation of far radiation field of an arbitrarily oriented dipole above layered anisotropic half space.
{"title":"Computation of far radiation field of an arbitrarily oriented dipole above anisotropic half space","authors":"Cao Le, Wei Bing, Zhao-Hang Peng, He Qiong","doi":"10.1109/CSQRWC.2013.6657378","DOIUrl":"https://doi.org/10.1109/CSQRWC.2013.6657378","url":null,"abstract":"The far field formulation of an arbitrarily oriented electric dipole located at the interface of layered anisotropic half space is deduced based on the reciprocity theorem. Then, considering the optical path difference of the directed wave and reflected wave, the formulation of the electric dipole located above the interface of layered anisotropic half space is discussed. The General Transmitting Matrix (GTM) method is used to compute the reflection coefficients of anisotropic layered half space. Finally, numerical example of the electric dipole located at the interface of anisotropic half space is given. The numerical results show that this method can be used in the fast computation of far radiation field of an arbitrarily oriented dipole above layered anisotropic half space.","PeriodicalId":355180,"journal":{"name":"2013 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126246309","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}
Pub Date : 2013-07-21DOI: 10.1109/CSQRWC.2013.6657381
Geng Chen, Lei Zhao, Wen Li, Huadong Zhao, Yuan Wenhua
This paper studies a novel acceleration technique for the FDTD method using new Intel instruction extensions - Intel Advanced Vector Extensions (AVX). We compare two configurations of FDTD algorithm (one enabled with AVX and a second without AVX) and present a performance evolution of the two settings. The numerical results show that the FDTD with AVX gives over 7 times speedup ratio compared to the FDTD without AVX.
{"title":"Performance study of AVX instructions for the FDTD method","authors":"Geng Chen, Lei Zhao, Wen Li, Huadong Zhao, Yuan Wenhua","doi":"10.1109/CSQRWC.2013.6657381","DOIUrl":"https://doi.org/10.1109/CSQRWC.2013.6657381","url":null,"abstract":"This paper studies a novel acceleration technique for the FDTD method using new Intel instruction extensions - Intel Advanced Vector Extensions (AVX). We compare two configurations of FDTD algorithm (one enabled with AVX and a second without AVX) and present a performance evolution of the two settings. The numerical results show that the FDTD with AVX gives over 7 times speedup ratio compared to the FDTD without AVX.","PeriodicalId":355180,"journal":{"name":"2013 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125414156","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}
Pub Date : 2013-07-21DOI: 10.1109/CSQRWC.2013.6657414
Ruike Yang, Li Li, Zhenwei Zhao, Tongya Lu
Clouds have fractal characteristic, self-similarity structure. In this paper, the fractal theory is used to simulate the spatial distribution of clouds density. Where there is larger density, there is larger liquid water content. Using analogy technique, the distribution of liquid water content in clouds is simulated. Specific attenuation of different liquid water content within clouds is calculated at Ka band. Based on the statistic of liquid water content in clouds at Xi'an area, the cloud specific attenuation and the attenuation of simulating rain cloud are calculated on slant path. It is shown that the clouds and the distribution of liquid water content in the clouds may be simulated by means of fractal. Utilizing the simulated cloud, cloud attenuation may be estimated at Ka band.
{"title":"Cloud simulation and attenuation at Ka band on slant path","authors":"Ruike Yang, Li Li, Zhenwei Zhao, Tongya Lu","doi":"10.1109/CSQRWC.2013.6657414","DOIUrl":"https://doi.org/10.1109/CSQRWC.2013.6657414","url":null,"abstract":"Clouds have fractal characteristic, self-similarity structure. In this paper, the fractal theory is used to simulate the spatial distribution of clouds density. Where there is larger density, there is larger liquid water content. Using analogy technique, the distribution of liquid water content in clouds is simulated. Specific attenuation of different liquid water content within clouds is calculated at Ka band. Based on the statistic of liquid water content in clouds at Xi'an area, the cloud specific attenuation and the attenuation of simulating rain cloud are calculated on slant path. It is shown that the clouds and the distribution of liquid water content in the clouds may be simulated by means of fractal. Utilizing the simulated cloud, cloud attenuation may be estimated at Ka band.","PeriodicalId":355180,"journal":{"name":"2013 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125618153","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}
Pub Date : 2013-07-21DOI: 10.1109/CSQRWC.2013.6657416
X. Ren
The electromagnetic scattering from the rough surface of layered medium with circular polarized wave incidence is studied, the formulae of the scattering coefficient for different polarization is derived using the small perturbation method. A Gaussian rough surface is presented for describing the natural surface of layered medium, the formulae of the bistatic scattering coefficient is deduced. The angular distribution of the bistatic scattering coefficient that the incident wave and scattering wave are right-handed circular polarization are obtained by numerical implementation, the influence of the permittivity of substrate medium, the permittivity and the mean layer thickness of intermediate medium, the roughness surface parameters and the frequency of the incident wave on the bistatic scattering coefficient is discussed. The numerical results show that the influence of the permittivity of substrate medium, the permittivity and the mean layer thickness of intermediate medium, the roughness surface parameters and the frequency of the incident wave on the bistatic scattering coefficient is very complex.
{"title":"Study on electromagnetic scattering from Gaussian rough surface of layered medium with circular polarized wave incidence","authors":"X. Ren","doi":"10.1109/CSQRWC.2013.6657416","DOIUrl":"https://doi.org/10.1109/CSQRWC.2013.6657416","url":null,"abstract":"The electromagnetic scattering from the rough surface of layered medium with circular polarized wave incidence is studied, the formulae of the scattering coefficient for different polarization is derived using the small perturbation method. A Gaussian rough surface is presented for describing the natural surface of layered medium, the formulae of the bistatic scattering coefficient is deduced. The angular distribution of the bistatic scattering coefficient that the incident wave and scattering wave are right-handed circular polarization are obtained by numerical implementation, the influence of the permittivity of substrate medium, the permittivity and the mean layer thickness of intermediate medium, the roughness surface parameters and the frequency of the incident wave on the bistatic scattering coefficient is discussed. The numerical results show that the influence of the permittivity of substrate medium, the permittivity and the mean layer thickness of intermediate medium, the roughness surface parameters and the frequency of the incident wave on the bistatic scattering coefficient is very complex.","PeriodicalId":355180,"journal":{"name":"2013 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124906273","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}
Pub Date : 2013-07-21DOI: 10.1109/CSQRWC.2013.6657361
Weibo Cui, Xiao Zhang, Xiaonan Lu, Yuxing Ren, Mingzhou Zhan, B. Yan
In this paper, an X-band frequency source based on DDS and PLL whose output is 11.75~12.25GHz is developed. The DDS can be controlled through FPGA and PC. According to fast-locked analysis, low spurious analysis and low phase noise analysis, the optimal loop parameter is selected upon MATLAB simulation. Then low phase noise, frequency agile and low spurious are achieved. On the basis of the test results, the best frequency switching time is less than 10us, the phase-noise is better than -104dBc/Hz@10kHz, the spurious are better than -50dBc and step size 2.5kHz.
{"title":"The design of high performance X-band frequency synthesizer based on DDS and PLL","authors":"Weibo Cui, Xiao Zhang, Xiaonan Lu, Yuxing Ren, Mingzhou Zhan, B. Yan","doi":"10.1109/CSQRWC.2013.6657361","DOIUrl":"https://doi.org/10.1109/CSQRWC.2013.6657361","url":null,"abstract":"In this paper, an X-band frequency source based on DDS and PLL whose output is 11.75~12.25GHz is developed. The DDS can be controlled through FPGA and PC. According to fast-locked analysis, low spurious analysis and low phase noise analysis, the optimal loop parameter is selected upon MATLAB simulation. Then low phase noise, frequency agile and low spurious are achieved. On the basis of the test results, the best frequency switching time is less than 10us, the phase-noise is better than -104dBc/Hz@10kHz, the spurious are better than -50dBc and step size 2.5kHz.","PeriodicalId":355180,"journal":{"name":"2013 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130097966","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}
Pub Date : 2013-07-21DOI: 10.1109/CSQRWC.2013.6657356
Tong Chuang-ming, Peng Peng, Li Dan
A novel spiraled compact microstrip resonant cell (SCMRC) is proposed and applied to the design of half-mode substrate integrated waveguide (HMSIW) bandpass filter. SCMRC can lower the cutoff frequency of HMSIW while keeping the size and good transmission characteristics. The HMSIW filter with SCMRC has a passband between 3.46GHz and 3.71GHz, besides, it has both smaller size and better return loss compared with other EBG structure SIW or HMSIW filter. In this paper, such a filter is designed, manufactured and measured. Good agreement between measurement and simulation results demonstrates that the design is effective.
{"title":"A novel design of half-mode substrate integrated waveguide(HMSIW) filter with SCMRC","authors":"Tong Chuang-ming, Peng Peng, Li Dan","doi":"10.1109/CSQRWC.2013.6657356","DOIUrl":"https://doi.org/10.1109/CSQRWC.2013.6657356","url":null,"abstract":"A novel spiraled compact microstrip resonant cell (SCMRC) is proposed and applied to the design of half-mode substrate integrated waveguide (HMSIW) bandpass filter. SCMRC can lower the cutoff frequency of HMSIW while keeping the size and good transmission characteristics. The HMSIW filter with SCMRC has a passband between 3.46GHz and 3.71GHz, besides, it has both smaller size and better return loss compared with other EBG structure SIW or HMSIW filter. In this paper, such a filter is designed, manufactured and measured. Good agreement between measurement and simulation results demonstrates that the design is effective.","PeriodicalId":355180,"journal":{"name":"2013 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128092986","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}
Pub Date : 2013-07-21DOI: 10.1109/CSQRWC.2013.6657385
A. Gu, Shiwen Yang, Z. Nie
A well performed miniaturized ultra-wideband conical log spiral antenna is designed and fabricated in this paper. The conical log spiral antenna which is able to cover S to X band is designed and simulated based on the antenna requirement and commercial software HFSS. A microstrip balun (balanced-to-unbalanced transformer) is also designed to match the designed antenna and the coaxial line. Then, the balun is added to the conical spiral antenna, and the whole model is being simulated and optimized. The axial ratio and the VSWR of the low frequency are greatly improved by introducing resistance and absorbing material. The conical log spiral antenna is then fabricated and measured. Measured results are in reasonable agreement with the simulated results, which show that the antenna has a wide beamwidth of about 100°, an axial ratio of less than 3dB and a VSWR of less than 2.0 over an ultrawideband of 6:1.
{"title":"Analysis and design of miniaturized ultra-wideband conical log spiral antennas","authors":"A. Gu, Shiwen Yang, Z. Nie","doi":"10.1109/CSQRWC.2013.6657385","DOIUrl":"https://doi.org/10.1109/CSQRWC.2013.6657385","url":null,"abstract":"A well performed miniaturized ultra-wideband conical log spiral antenna is designed and fabricated in this paper. The conical log spiral antenna which is able to cover S to X band is designed and simulated based on the antenna requirement and commercial software HFSS. A microstrip balun (balanced-to-unbalanced transformer) is also designed to match the designed antenna and the coaxial line. Then, the balun is added to the conical spiral antenna, and the whole model is being simulated and optimized. The axial ratio and the VSWR of the low frequency are greatly improved by introducing resistance and absorbing material. The conical log spiral antenna is then fabricated and measured. Measured results are in reasonable agreement with the simulated results, which show that the antenna has a wide beamwidth of about 100°, an axial ratio of less than 3dB and a VSWR of less than 2.0 over an ultrawideband of 6:1.","PeriodicalId":355180,"journal":{"name":"2013 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131929856","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}
In this paper, a second order Koch fractal log-periodic dipole antenna (LPK2DA) with broadband is proposed. Koch iteration technique has been applied here in order to obtain a small physical size. And the overall size of the proposed antenna is 57.5×88.9×0.5 mm3. The antenna has a broadband which ranges from 2 GHz to 8 GHz. Furthermore, the antenna has end-fire radiation patterns along its horizontal axis, which is very suitable for receiving antennas and conformal applications.
{"title":"A small and wideband second order Koch-fractal log-periodic antenna","authors":"Longdan Tan, Zengrui Li, Q. Guo, Hui Zhang, Jie Wang, Guosheng Liu, Xueqin Zhang","doi":"10.1109/CSQRWC.2013.6657406","DOIUrl":"https://doi.org/10.1109/CSQRWC.2013.6657406","url":null,"abstract":"In this paper, a second order Koch fractal log-periodic dipole antenna (LPK2DA) with broadband is proposed. Koch iteration technique has been applied here in order to obtain a small physical size. And the overall size of the proposed antenna is 57.5×88.9×0.5 mm3. The antenna has a broadband which ranges from 2 GHz to 8 GHz. Furthermore, the antenna has end-fire radiation patterns along its horizontal axis, which is very suitable for receiving antennas and conformal applications.","PeriodicalId":355180,"journal":{"name":"2013 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference","volume":"272 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134039126","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}
Pub Date : 2013-07-21DOI: 10.1109/CSQRWC.2013.6657365
R. Zhang, X. Q. Lin, C. Li, F. Cheng, Y. Fan
In this paper, a high-efficiency wireless power transmission (WPT) circuit for 15.22 MHz based on strongly coupled magnetic resonances is proposed using a new structure of coaxial resonators. The coaxial resonators are manufactured on a substrate. It has the advantages of compactness, ease of fabrication, high efficiency and low cost. The detail structure of the resonators and experimental results are presented. When it is a short-distance application, the efficiency of the circuit can be very high (91.62%) and when the distance increases to 1.5 times of the diameter (18 cm), still there is an efficiency of 52.48%.
{"title":"A high-efficiency wireless power transmission circuit using coaxial resonators welded on a substrate","authors":"R. Zhang, X. Q. Lin, C. Li, F. Cheng, Y. Fan","doi":"10.1109/CSQRWC.2013.6657365","DOIUrl":"https://doi.org/10.1109/CSQRWC.2013.6657365","url":null,"abstract":"In this paper, a high-efficiency wireless power transmission (WPT) circuit for 15.22 MHz based on strongly coupled magnetic resonances is proposed using a new structure of coaxial resonators. The coaxial resonators are manufactured on a substrate. It has the advantages of compactness, ease of fabrication, high efficiency and low cost. The detail structure of the resonators and experimental results are presented. When it is a short-distance application, the efficiency of the circuit can be very high (91.62%) and when the distance increases to 1.5 times of the diameter (18 cm), still there is an efficiency of 52.48%.","PeriodicalId":355180,"journal":{"name":"2013 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116490216","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}
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