Pub Date : 2006-10-01DOI: 10.1109/ISAPE.2006.353586
Hua-qing Xiao, X. Xiong, C. Liao
Based on the Ansoft 3D electromagnetic field software HFSS and the typical lumped equivalent-circuit model of spiral inductors on silicon (SIOS) for RF integrated circuits (RFICs), the comparison study of single-layered and double-layered differential symmetric circular spiral inductors has been given. The numerical analyses showed that the former can give better results of quality factor (QF) and self-resonant frequency (SRF) and the L value of the former can satisfied the nH level requirements where the Q factor obtains its highest value. Experimental results showed that the former can gives a 50.5% increase for the maximum Q value and 164.5% increase for the SRF whereas the latter can supply over 3 times larger L value. The simulation results have good agreements with the theoretical analyses. At last the design guidelines were given according to the simulation and experimental results.
{"title":"Comparison Study on Single-layered and Double-layered Differential Symmetric Circular Spiral Inductors","authors":"Hua-qing Xiao, X. Xiong, C. Liao","doi":"10.1109/ISAPE.2006.353586","DOIUrl":"https://doi.org/10.1109/ISAPE.2006.353586","url":null,"abstract":"Based on the Ansoft 3D electromagnetic field software HFSS and the typical lumped equivalent-circuit model of spiral inductors on silicon (SIOS) for RF integrated circuits (RFICs), the comparison study of single-layered and double-layered differential symmetric circular spiral inductors has been given. The numerical analyses showed that the former can give better results of quality factor (QF) and self-resonant frequency (SRF) and the L value of the former can satisfied the nH level requirements where the Q factor obtains its highest value. Experimental results showed that the former can gives a 50.5% increase for the maximum Q value and 164.5% increase for the SRF whereas the latter can supply over 3 times larger L value. The simulation results have good agreements with the theoretical analyses. At last the design guidelines were given according to the simulation and experimental results.","PeriodicalId":113164,"journal":{"name":"2006 7th International Symposium on Antennas, Propagation & EM Theory","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123493173","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 : 2006-10-01DOI: 10.1109/ISAPE.2006.353260
Sun Yu-fa, Yue Mei-jun, Xu Shan-jia, Chen Xue-quan
Characteristic basis function method (CBFM) is a novel approach for the efficient solution of electromagnetic scattering problems. In this paper, CBFM combined with the domain decomposition technique is used to calculate the radar cross sections from 2D electrically large conducting cylinder and dielectric cylinder. It is shown that the numerical results presented in this paper are in good agreement with that achieved by the traditional method of moments, while the computational efficiency is improved greatly.
{"title":"Analysis of EM scattering characteristics from 2D electrically large objects using characteristic basis function method","authors":"Sun Yu-fa, Yue Mei-jun, Xu Shan-jia, Chen Xue-quan","doi":"10.1109/ISAPE.2006.353260","DOIUrl":"https://doi.org/10.1109/ISAPE.2006.353260","url":null,"abstract":"Characteristic basis function method (CBFM) is a novel approach for the efficient solution of electromagnetic scattering problems. In this paper, CBFM combined with the domain decomposition technique is used to calculate the radar cross sections from 2D electrically large conducting cylinder and dielectric cylinder. It is shown that the numerical results presented in this paper are in good agreement with that achieved by the traditional method of moments, while the computational efficiency is improved greatly.","PeriodicalId":113164,"journal":{"name":"2006 7th International Symposium on Antennas, Propagation & EM Theory","volume":"8 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124462002","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 : 2006-10-01DOI: 10.1109/ISAPE.2006.353514
Yao Jing, Yi Dong-yun
Based on the spatial geometry relationships, a concise derivation of the flat earth effect and the terrain height effect is illustrated for across-track InSAR systems. The interferometric phase can be expressed in the form of a sum of these two kinds of effects through the derivation. The influences of the flat earth and the terrain height to the interferometric phase are simulated, which are in accordance with the theoretical analysis. The flat earth effect and the terrain height effect for distributed SAR systems are also discussed.
{"title":"A Concise Derivation of Flat Earth Effect and Terrain Height Effect for Across-track InSAR","authors":"Yao Jing, Yi Dong-yun","doi":"10.1109/ISAPE.2006.353514","DOIUrl":"https://doi.org/10.1109/ISAPE.2006.353514","url":null,"abstract":"Based on the spatial geometry relationships, a concise derivation of the flat earth effect and the terrain height effect is illustrated for across-track InSAR systems. The interferometric phase can be expressed in the form of a sum of these two kinds of effects through the derivation. The influences of the flat earth and the terrain height to the interferometric phase are simulated, which are in accordance with the theoretical analysis. The flat earth effect and the terrain height effect for distributed SAR systems are also discussed.","PeriodicalId":113164,"journal":{"name":"2006 7th International Symposium on Antennas, Propagation & EM Theory","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124463221","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 : 2006-10-01DOI: 10.1109/ISAPE.2006.353536
Jia-chun Wang, Jiaming Shi, Jiayin Wang, Y. Ling
A geometrical optics approximation method for sphere (called Gom) is developed to compute its absorption and scattering cross sections. And it is applied to calculate absorption coefficients, scattering coefficients and phase function of electromagnetic radiation by large fogdrops. The shapes of fogdrops are assumed to be spherical. Comparison between the results which are computed by using Mie code, Monte Carlo code and Gom separately indicates that the agreement is good. The optical properties research of fogdrops is benefit for further research as obscurant.
{"title":"Optical Properties of Large Fogdrops in the Geometrical Optics Approximation","authors":"Jia-chun Wang, Jiaming Shi, Jiayin Wang, Y. Ling","doi":"10.1109/ISAPE.2006.353536","DOIUrl":"https://doi.org/10.1109/ISAPE.2006.353536","url":null,"abstract":"A geometrical optics approximation method for sphere (called Gom) is developed to compute its absorption and scattering cross sections. And it is applied to calculate absorption coefficients, scattering coefficients and phase function of electromagnetic radiation by large fogdrops. The shapes of fogdrops are assumed to be spherical. Comparison between the results which are computed by using Mie code, Monte Carlo code and Gom separately indicates that the agreement is good. The optical properties research of fogdrops is benefit for further research as obscurant.","PeriodicalId":113164,"journal":{"name":"2006 7th International Symposium on Antennas, Propagation & EM Theory","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122943819","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 : 2006-10-01DOI: 10.1109/ISAPE.2006.353383
Liu Yong, Sun Jun, Lu Xin, S. Lei, Yan Yong, Lu Shidong, Chen Xue
The integrated design method of the millimeter-wave (Ka band) microstrip monopulse antenna array and infrared dual-sensor system is presented in this paper. The performance and structure of the sensor are optimized. Meanwhile, the simulated and measured results of the circular planar antenna with a IR aperture are also demonstrated, meanwhile the result improves that the infrared sensor also has effect upon the antenna array.
{"title":"Study of the Millimeter Microstrip Monopulse Antenna Array in the Dual-Sensor System","authors":"Liu Yong, Sun Jun, Lu Xin, S. Lei, Yan Yong, Lu Shidong, Chen Xue","doi":"10.1109/ISAPE.2006.353383","DOIUrl":"https://doi.org/10.1109/ISAPE.2006.353383","url":null,"abstract":"The integrated design method of the millimeter-wave (Ka band) microstrip monopulse antenna array and infrared dual-sensor system is presented in this paper. The performance and structure of the sensor are optimized. Meanwhile, the simulated and measured results of the circular planar antenna with a IR aperture are also demonstrated, meanwhile the result improves that the infrared sensor also has effect upon the antenna array.","PeriodicalId":113164,"journal":{"name":"2006 7th International Symposium on Antennas, Propagation & EM Theory","volume":" 99","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113948685","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 : 2006-10-01DOI: 10.1109/ISAPE.2006.353237
Meng Ren, Dong-ming Zhou, Feng Liu, Jian-guo He
The time-domain electric field integral equation (EFIE) is used along with marching-on in time for treating problems of transient scattering by arbitrary wires and surfaces. The conducting wire and surface are modeled by straight segments and planar triangular patches for numerical purposes. Comparisons of surface and wire current densities and backscattered far fields are made with the results from the inverse discrete Fourier transform (IDFT) of frequency-domain solution, and good agreement is obtained in each case.
{"title":"Transient Scattering by Arbitrary Wires and Surfaces","authors":"Meng Ren, Dong-ming Zhou, Feng Liu, Jian-guo He","doi":"10.1109/ISAPE.2006.353237","DOIUrl":"https://doi.org/10.1109/ISAPE.2006.353237","url":null,"abstract":"The time-domain electric field integral equation (EFIE) is used along with marching-on in time for treating problems of transient scattering by arbitrary wires and surfaces. The conducting wire and surface are modeled by straight segments and planar triangular patches for numerical purposes. Comparisons of surface and wire current densities and backscattered far fields are made with the results from the inverse discrete Fourier transform (IDFT) of frequency-domain solution, and good agreement is obtained in each case.","PeriodicalId":113164,"journal":{"name":"2006 7th International Symposium on Antennas, Propagation & EM Theory","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125275044","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 : 2006-10-01DOI: 10.1109/ISAPE.2006.353522
Zhang Changsen, Yang Caiping
With the development of mobile communication, quality of indoor communication is highly demanded by mobile consumers. This paper analyses the characteristic of indoor wireless communication system, studies ray-tracing method and bring forward the key points for designing indoor wireless communication.
{"title":"Study on indoor wireless overlay of mobile communication system","authors":"Zhang Changsen, Yang Caiping","doi":"10.1109/ISAPE.2006.353522","DOIUrl":"https://doi.org/10.1109/ISAPE.2006.353522","url":null,"abstract":"With the development of mobile communication, quality of indoor communication is highly demanded by mobile consumers. This paper analyses the characteristic of indoor wireless communication system, studies ray-tracing method and bring forward the key points for designing indoor wireless communication.","PeriodicalId":113164,"journal":{"name":"2006 7th International Symposium on Antennas, Propagation & EM Theory","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129271344","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 : 2006-10-01DOI: 10.1109/ISAPE.2006.353551
F. Yang, H.C. Wu, W. Dou, Z.L. Sun
FEM (finite element method) based on the weak form of Helmholtz equation is first here employed to deal with the inhomogeneous structure, shielded Y-junction microstrip circulator at millimeter-wave band. The scattering parameters of the circulator are computed in two steps. As a first step, the field distribution in the shielded microstrip is calculated in the two-dimensional (2-D) FEM. In second step, the three-dimensional (3-D) Vector-FEM is used to model the inhomogeneous structure of the circulator, and FEM field are matched with the field of microstrip at the 3 interfaces. So a sparse matrix equation is obtained, and it is solved with the SSOR-BICG algorithm. Numerical results of the circulator are presented and compared when the ferrite disk radius changed. Also, the electric field distribution in the ferrite disk is depicted to show the circulating process.
{"title":"Analysis of Millimeter Wave Y-Junction Microstrip Circulator","authors":"F. Yang, H.C. Wu, W. Dou, Z.L. Sun","doi":"10.1109/ISAPE.2006.353551","DOIUrl":"https://doi.org/10.1109/ISAPE.2006.353551","url":null,"abstract":"FEM (finite element method) based on the weak form of Helmholtz equation is first here employed to deal with the inhomogeneous structure, shielded Y-junction microstrip circulator at millimeter-wave band. The scattering parameters of the circulator are computed in two steps. As a first step, the field distribution in the shielded microstrip is calculated in the two-dimensional (2-D) FEM. In second step, the three-dimensional (3-D) Vector-FEM is used to model the inhomogeneous structure of the circulator, and FEM field are matched with the field of microstrip at the 3 interfaces. So a sparse matrix equation is obtained, and it is solved with the SSOR-BICG algorithm. Numerical results of the circulator are presented and compared when the ferrite disk radius changed. Also, the electric field distribution in the ferrite disk is depicted to show the circulating process.","PeriodicalId":113164,"journal":{"name":"2006 7th International Symposium on Antennas, Propagation & EM Theory","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130167035","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 : 2006-10-01DOI: 10.1109/ISAPE.2006.353318
Xue-xia Yang, Jun-shu Xu, Deming Xu
Rectennas operating on 10 GHz with high RF-DC conversion efficiency of 75% were studied in this paper. The circularly polarized quasi-square patches fed by aperture coupling were used as the receiving antennas, which were integrated and matched to the circuits of rectenna easily. The double-layer designing not only minimized the size of the rectennas but also decreased the effects of the circuits on the antenna and improve the bandwidth and gain of the receiving antennas.
{"title":"Compact Circularly Polarized Rectennas for Microwave Power Transmission Applications","authors":"Xue-xia Yang, Jun-shu Xu, Deming Xu","doi":"10.1109/ISAPE.2006.353318","DOIUrl":"https://doi.org/10.1109/ISAPE.2006.353318","url":null,"abstract":"Rectennas operating on 10 GHz with high RF-DC conversion efficiency of 75% were studied in this paper. The circularly polarized quasi-square patches fed by aperture coupling were used as the receiving antennas, which were integrated and matched to the circuits of rectenna easily. The double-layer designing not only minimized the size of the rectennas but also decreased the effects of the circuits on the antenna and improve the bandwidth and gain of the receiving antennas.","PeriodicalId":113164,"journal":{"name":"2006 7th International Symposium on Antennas, Propagation & EM Theory","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121659286","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 : 2006-10-01DOI: 10.1109/ISAPE.2006.353377
L. Wenxing
The noise of an active receiving antenna is analyzed in this paper. The design criterion and some design consideration for short wave active receiving antenna is given. The method to measure the noise figure of the active receiving antenna is proposed. It is simple efficient and no extra request for the detection performance of the measuring instrument. The experimental confirmation shown that this method is correct.
{"title":"Noise Analysis and Measurement of Active Antenna","authors":"L. Wenxing","doi":"10.1109/ISAPE.2006.353377","DOIUrl":"https://doi.org/10.1109/ISAPE.2006.353377","url":null,"abstract":"The noise of an active receiving antenna is analyzed in this paper. The design criterion and some design consideration for short wave active receiving antenna is given. The method to measure the noise figure of the active receiving antenna is proposed. It is simple efficient and no extra request for the detection performance of the measuring instrument. The experimental confirmation shown that this method is correct.","PeriodicalId":113164,"journal":{"name":"2006 7th International Symposium on Antennas, Propagation & EM Theory","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121933731","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：