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2007 International Conference on Microwave and Millimeter Wave Technology最新文献

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Electromagnetic Scattering by a Homogeneous Sphere Located in a 2D on-axis Gaussian Beam 二维高斯光束中均匀球的电磁散射
2007 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2007-04-18 DOI: 10.1109/ICMMT.2007.381388
Liu Haiying, Wu Zhensen
{"title":"Electromagnetic Scattering by a Homogeneous Sphere Located in a 2D on-axis Gaussian Beam","authors":"Liu Haiying, Wu Zhensen","doi":"10.1109/ICMMT.2007.381388","DOIUrl":"https://doi.org/10.1109/ICMMT.2007.381388","url":null,"abstract":"Studying on electromagnetic scattering by particles plays an important role in atmosphere monitoring, space remote sensing and some other fields. Scattering by a homogeneous sphere located in a 2D Gaussian beam is discussed in the paper. Expansions of cylindrical vector wave functions in terms of spherical ones are introduced simply. With the expansions, the beam coefficients in a spherical coordinates are obtained from the forms in cylindrical coordinates. For a homogeneous sphere, scattering coefficients in generalized Lorenz Mie theory are deduced in detail. According to the formula of scattering coefficients, scattering characteristic of a sphere in a 2D Gaussian beam can be analyzed.","PeriodicalId":409971,"journal":{"name":"2007 International Conference on Microwave and Millimeter Wave Technology","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128643642","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
Eigenvalue solver based on Finite Integration Technology 基于有限积分技术的特征值求解器
2007 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2007-04-18 DOI: 10.1109/ICMMT.2007.381356
X. Zhu, Zhonghai Yang, Bin Li, Jian Qing Li, Tao Huang, Q. Hu, Y. Hu, P. Gao, Li Liao, Liyi Xiao, GuoXian He
{"title":"Eigenvalue solver based on Finite Integration Technology","authors":"X. Zhu, Zhonghai Yang, Bin Li, Jian Qing Li, Tao Huang, Q. Hu, Y. Hu, P. Gao, Li Liao, Liyi Xiao, GuoXian He","doi":"10.1109/ICMMT.2007.381356","DOIUrl":"https://doi.org/10.1109/ICMMT.2007.381356","url":null,"abstract":"HFCS, a 3D ElectroMagnetic (EM) simulator, is developed based on the Finite Integration Technology (FIT) so that Maxwell equations in any arbitrary geometry with known boundary conditions and free sources can be solved. As a first step, the FDTD-type grid is adopted. Thereafter, the Maxwell equations in integral form are discretized into the Maxwell Grid Equations through FIT and the eigenmode equation is obtained. Assigning material properties and boundary conditions, the eigenmode problem for a 3D geometry is established and then solved.","PeriodicalId":409971,"journal":{"name":"2007 International Conference on Microwave and Millimeter Wave Technology","volume":"202 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129043780","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
10 GHz GaInP/GaAs HBT Injection-Locked Frequency Divider 10ghz GaInP/GaAs HBT注入锁定分频器
2007 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2007-04-18 DOI: 10.1109/ICMMT.2007.381437
H. Wei, C. Meng, YuWen Chang, G. Huang
{"title":"10 GHz GaInP/GaAs HBT Injection-Locked Frequency Divider","authors":"H. Wei, C. Meng, YuWen Chang, G. Huang","doi":"10.1109/ICMMT.2007.381437","DOIUrl":"https://doi.org/10.1109/ICMMT.2007.381437","url":null,"abstract":"The first integrated GaInP/GaAs heterojunction bipolar transistor (HBT) injection-locked frequency divider (ILFD) with the stacked transformers is demonstrated at 9.60-10.38 GHz. The stacked transformers formed by only two metal layers provide the inductive coupling in the cross feedback and separate biasing for base and collector to allow for the larger voltage swing in the LC tank and increasing locking range. Under the supply voltage of 5 V and core power consumption of 20.5 mW, the locking range is up to 7.8% of the center operating frequency. Compared to other high frequency ILFDs employing a current source as signal injector, the design has a good performance in locking range. The chip size is 1.0 mm times 1.0 mm.","PeriodicalId":409971,"journal":{"name":"2007 International Conference on Microwave and Millimeter Wave Technology","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124975741","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
Design of Triple-band Bandpass Filter Using Trn-section Stepped-Impedance Resonators 三频带带通滤波器的阶跃阻抗谐振器设计
2007 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2007-04-18 DOI: 10.1109/ICMMT.2007.381479
X. Lin, Q. Chu
{"title":"Design of Triple-band Bandpass Filter Using Trn-section Stepped-Impedance Resonators","authors":"X. Lin, Q. Chu","doi":"10.1109/ICMMT.2007.381479","DOIUrl":"https://doi.org/10.1109/ICMMT.2007.381479","url":null,"abstract":"On the basis of tri-section stepped-impedance resonator (SIR), a novel triple-band bandpass filter (BPF) is presented, which has a triple-band feature of three passbands at desired frequencies and high out-of-band suppression. The new coupling scheme at the input and output can improve the performance of the BPF, and the hairpin structure helps to reduce the size. A microstrip filter was designed and simulated, proving the concept in an excellent way. The prototype of the BPF achieved insertion loss of 2.2, 1.8 and 1.7 dB at 1.0, 2.4, 3.6 GHz, respectively.","PeriodicalId":409971,"journal":{"name":"2007 International Conference on Microwave and Millimeter Wave Technology","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125141634","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: 56
Blind Estimation of the Symbol Period of a Long-Code DS-SS Signal 长码DS-SS信号符号周期的盲估计
2007 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2007-04-18 DOI: 10.1109/ICMMT.2007.381485
Haiyuan Xu, Zhitao Huang, Yiyu Zhou
{"title":"Blind Estimation of the Symbol Period of a Long-Code DS-SS Signal","authors":"Haiyuan Xu, Zhitao Huang, Yiyu Zhou","doi":"10.1109/ICMMT.2007.381485","DOIUrl":"https://doi.org/10.1109/ICMMT.2007.381485","url":null,"abstract":"Direct-Sequence Spread Spectrum (DS-SS) signals are widely used in modern communications. The detection and parameter estimation of DS-SS signals in non- cooperative context have been paid many attentions. Up to now, most of the proposed methods consider only short-code DS-SS signals, and long-code DS-SS signals have hardly any been studied. In this paper, a method for blind estimation of the symbol period of a long-code DS-SS signal is proposed. The proposed method is based on further processing of the autocorrelation estimator. Simulation results are provided to illustrate the approach.","PeriodicalId":409971,"journal":{"name":"2007 International Conference on Microwave and Millimeter Wave Technology","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128410150","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: 7
Application of Micro Genetic Algorithm to Optimization of Time-Domain Ultra-Wide Band Antenna Array 微遗传算法在时域超宽带天线阵优化中的应用
2007 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2007-04-18 DOI: 10.1109/ICMMT.2007.381381
Yan-Ming Qin, C. Liao, Tao Wei
{"title":"Application of Micro Genetic Algorithm to Optimization of Time-Domain Ultra-Wide Band Antenna Array","authors":"Yan-Ming Qin, C. Liao, Tao Wei","doi":"10.1109/ICMMT.2007.381381","DOIUrl":"https://doi.org/10.1109/ICMMT.2007.381381","url":null,"abstract":"The application of antenna array is an effective way to improve the gain and directivity of ultra-wide band (UWB) antenna and reduce the side lobe. It is different from the traditional narrowband antenna based on frequency domain that the finite-difference time-domain method (FDTD) was used to make simulated analysis of a UWB TEM horn antenna in time domain. According to the principle of superposition, the information of time-domain radiated field of a 9-elements linear TEM horn array was then acquired and the universal characteristic of time-domain UWB antenna array was discussed. Combined with micro genetic algorithm (MGA), the energy pattern of linear array is optimized and a narrow beam-width is available, while the maximal side-lobe level of the array is limited.","PeriodicalId":409971,"journal":{"name":"2007 International Conference on Microwave and Millimeter Wave Technology","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122851784","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: 13
Basic Time-Domain Electromagnetic Emanation Models of Information Technology Equipment 信息技术设备的基本时域电磁辐射模型
2007 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2007-04-18 DOI: 10.1109/ICMMT.2007.381347
S. Dong, Jiadong Xu, S. Shang, Wei Ma
{"title":"Basic Time-Domain Electromagnetic Emanation Models of Information Technology Equipment","authors":"S. Dong, Jiadong Xu, S. Shang, Wei Ma","doi":"10.1109/ICMMT.2007.381347","DOIUrl":"https://doi.org/10.1109/ICMMT.2007.381347","url":null,"abstract":"The standing-wave dipole and the traveling-wave monopole in time domain are proposed to model information technology equipment. The standing-wave dipole model can be easily got from some other references and the traveling-wave monopole model is built based on Rothwell's work with some revision made. The condition, on which selection can be made, is included. Features of the transient near zone and far zone fields are discussed of both models through examples. Good agreement is got between analysis and computed results plotted in the paper. Index Terms-standing-wave dipole, traveling-wave monopole, current pulse, transient fields.","PeriodicalId":409971,"journal":{"name":"2007 International Conference on Microwave and Millimeter Wave Technology","volume":"368 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122770167","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 shifting on wires and split ring resonators 移位对导线和分环谐振器的影响
2007 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2007-04-18 DOI: 10.1109/ICMMT.2007.381323
Yu Feng, Jian Wu, Jianping Song
{"title":"The effect of shifting on wires and split ring resonators","authors":"Yu Feng, Jian Wu, Jianping Song","doi":"10.1109/ICMMT.2007.381323","DOIUrl":"https://doi.org/10.1109/ICMMT.2007.381323","url":null,"abstract":"Based on finite integration technique, the effect of shifting introduced in wires and split ring resonators on the pass band and resonant frequency of wires and split ring resonators is investigated. We similar pass bands and resonant frequency for two shifting structures of negative refractive index materials.The results show that there exists a shifting for resonant frequency and a narrowing in pass band deduced by the introduction of shifting wires and SRRs into materials.","PeriodicalId":409971,"journal":{"name":"2007 International Conference on Microwave and Millimeter Wave Technology","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121841450","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
An Effectual Method for Analyzing Rectangular Waveguide and H-Waveguide Filled with Multilayer Dielectric 多层介质填充矩形波导和h波导的一种有效分析方法
2007 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2007-04-18 DOI: 10.1109/ICMMT.2007.381349
B. Cao, Fuyong Xu
{"title":"An Effectual Method for Analyzing Rectangular Waveguide and H-Waveguide Filled with Multilayer Dielectric","authors":"B. Cao, Fuyong Xu","doi":"10.1109/ICMMT.2007.381349","DOIUrl":"https://doi.org/10.1109/ICMMT.2007.381349","url":null,"abstract":"The rectangular waveguide filled with multilayer dielectric is analyzed by using Fourier's expansion-differential method. Through calculating and comparing the cut-off wave numbers with theoretical referenced values of the rectangular guide filled with different width of dielectric, the correctness of the new method is verified. In addition, the cut-off and dispersion characteristics of H-waveguide filled with multilayer dielectric is numerically computed and analyzed. The method is more effective to calculate some complex dielectric problems. It is of important referenced values for design and application of microwave and millimeter wave components.","PeriodicalId":409971,"journal":{"name":"2007 International Conference on Microwave and Millimeter Wave Technology","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126361886","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
Field Computation of Waveguide Loaded High Order Mode Output Cavity 波导加载高阶模输出腔的场计算
2007 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2007-04-18 DOI: 10.1109/ICMMT.2007.381361
Wang Yong, Xie Jingxin
{"title":"Field Computation of Waveguide Loaded High Order Mode Output Cavity","authors":"Wang Yong, Xie Jingxin","doi":"10.1109/ICMMT.2007.381361","DOIUrl":"https://doi.org/10.1109/ICMMT.2007.381361","url":null,"abstract":"This paper describes a new numerical method based on the boundary element method (BEM) for the field computation of waveguide loaded high order mode output cavity (HMOC). A computer program is developed and the resonant frequency, external Q value and field distribution of a TM210 HMOC are computed. The results agree well with those of ISFEL3D.","PeriodicalId":409971,"journal":{"name":"2007 International Conference on Microwave and Millimeter Wave Technology","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126532073","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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