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ICMMT 4th International Conference on, Proceedings Microwave and Millimeter Wave Technology, 2004.最新文献

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Study on the weighting methods of suppressing sidelobe for pulse compression of chirp signal 啁啾信号脉冲压缩中抑制旁瓣的加权方法研究
ICMMT 4th International Conference on, Proceedings Microwave and Millimeter Wave Technology, 2004. Pub Date : 2004-08-18 DOI: 10.1109/ICMMT.2004.1411614
Hu Hang
{"title":"Study on the weighting methods of suppressing sidelobe for pulse compression of chirp signal","authors":"Hu Hang","doi":"10.1109/ICMMT.2004.1411614","DOIUrl":"https://doi.org/10.1109/ICMMT.2004.1411614","url":null,"abstract":"The sidelobe suppression is an important topic in the pulse compression technique. We study the sidelobe suppression for the pulse compression of the chirp signal, and analyze the spectrum weighting and the impulse response weighting method. For the two methods, we discuss the Fresnel spectrum smoothing effect, the pulse compression performance and the quantization effect of the digital pulse compression by using the computer simulations. Some of the useful conclusions are drawn.","PeriodicalId":393410,"journal":{"name":"ICMMT 4th International Conference on, Proceedings Microwave and Millimeter Wave Technology, 2004.","volume":"111 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131966905","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
Analysis of electromagnetic crystals in rectangular waveguide using lattice sums technique 用点阵和技术分析矩形波导中的电磁晶体
ICMMT 4th International Conference on, Proceedings Microwave and Millimeter Wave Technology, 2004. Pub Date : 2004-08-18 DOI: 10.1109/ICMMT.2004.1411636
K. Yasumoto, H. Jia
{"title":"Analysis of electromagnetic crystals in rectangular waveguide using lattice sums technique","authors":"K. Yasumoto, H. Jia","doi":"10.1109/ICMMT.2004.1411636","DOIUrl":"https://doi.org/10.1109/ICMMT.2004.1411636","url":null,"abstract":"Electromagnetic crystals formed by vertical full posts stacked in a rectangular waveguide are analyzed using the image theory and the lattice sums technique. It is shown that the frequency response of the crystals consisting of circular posts can be obtained by a simpler matrix calculus based on the one-dimensional lattice sums, the T-matrix of a circular cylinder in free space, and the generalized reflection and transmission matrices.","PeriodicalId":393410,"journal":{"name":"ICMMT 4th International Conference on, Proceedings Microwave and Millimeter Wave Technology, 2004.","volume":"36 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132256462","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
Experimental verification of 2-D periodically loaded transmission line metamaterial 二维周期性加载传输线超材料的实验验证
ICMMT 4th International Conference on, Proceedings Microwave and Millimeter Wave Technology, 2004. Pub Date : 2004-08-18 DOI: 10.1109/ICMMT.2004.1411577
Haitao Liao, Yewen Zhang, Li He, Hong-qiang Li, Hong Chen
{"title":"Experimental verification of 2-D periodically loaded transmission line metamaterial","authors":"Haitao Liao, Yewen Zhang, Li He, Hong-qiang Li, Hong Chen","doi":"10.1109/ICMMT.2004.1411577","DOIUrl":"https://doi.org/10.1109/ICMMT.2004.1411577","url":null,"abstract":"The L-C lumped-elements loaded transmission line (TL) two dimensional (2-D) network is presented as metamaterial possessing both \"left handed\" and \"right handed\" natures. The dispersion equation and diagram of the L-C loaded TL 2-D network is obtained analytically based on the Bloch-Floquet theory and Kirchhoff's theory, and the band structure is intuitively explained. Finally, a series of L loaded TL 2-D network was designed, and the experimentally obtained dispersion data and S/sub 21/ magnitude exhibits agreement with the periodical analysis.","PeriodicalId":393410,"journal":{"name":"ICMMT 4th International Conference on, Proceedings Microwave and Millimeter Wave Technology, 2004.","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130292126","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
Study on the broadband properties of a wire conical monopole antenna 线锥单极天线宽带特性研究
ICMMT 4th International Conference on, Proceedings Microwave and Millimeter Wave Technology, 2004. Pub Date : 2004-08-18 DOI: 10.1109/ICMMT.2004.1411455
Qi Wang, Chengli Ruan, Qing-qiang He
{"title":"Study on the broadband properties of a wire conical monopole antenna","authors":"Qi Wang, Chengli Ruan, Qing-qiang He","doi":"10.1109/ICMMT.2004.1411455","DOIUrl":"https://doi.org/10.1109/ICMMT.2004.1411455","url":null,"abstract":"Using the wire construction technique, a conical monopole antenna is fabricated. With the method of moments, the dependence of the antenna's VSWR on the number of the trapezoid wire elements, conical angles, feed gaps, feed radius and wire radius are investigated through a variety of comparisons. The main purpose of the study is to illustrate how the wire conical antenna exhibits the broadband properties for various geometric parameters directly from the viewpoint of VSWR.","PeriodicalId":393410,"journal":{"name":"ICMMT 4th International Conference on, Proceedings Microwave and Millimeter Wave Technology, 2004.","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127949792","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
Angle glint suppression for millimeter-wave radar based on polarization filtering 基于偏振滤波的毫米波雷达角闪烁抑制
ICMMT 4th International Conference on, Proceedings Microwave and Millimeter Wave Technology, 2004. Pub Date : 2004-08-18 DOI: 10.1109/ICMMT.2004.1411609
Song Lizhong, Qiao Xiaolin, M. Xiande
{"title":"Angle glint suppression for millimeter-wave radar based on polarization filtering","authors":"Song Lizhong, Qiao Xiaolin, M. Xiande","doi":"10.1109/ICMMT.2004.1411609","DOIUrl":"https://doi.org/10.1109/ICMMT.2004.1411609","url":null,"abstract":"For the millimeter wave radar, angle glint of extended targets is the main angle error. A new kind of dual polarization wide band millimeter wave radar is proposed and a glint suppression technology based on polarization filtering is studied in this paper. Firstly the echo-signal is processed into one dimension range profile based on high range resolution of millimeter wave radar and the effective strong scattering centers are detected, secondly the polarization filtering is used to the signals in the range cell where the scattering centers exist in order to suppress clutter and increase the angle measurement precision of single scattering center, finally the angle of each scattering center is measured by amplitude sum/difference and the target average angle is obtained by weighting all the scattering centers, which can realize the correct track on the target. Theoretical analysis and simulation results indicate that the technology can obviously increase the angle measurement precision of the whole target.","PeriodicalId":393410,"journal":{"name":"ICMMT 4th International Conference on, Proceedings Microwave and Millimeter Wave Technology, 2004.","volume":"189 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131696041","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
Comparison of different calculating methods for path loss in ray-tracing method at 2GHz 2GHz下射线追踪法路径损耗计算方法的比较
ICMMT 4th International Conference on, Proceedings Microwave and Millimeter Wave Technology, 2004. Pub Date : 2004-08-18 DOI: 10.1109/ICMMT.2004.1411492
Yinghua Li, Zhengwei Du, Ke Gong
{"title":"Comparison of different calculating methods for path loss in ray-tracing method at 2GHz","authors":"Yinghua Li, Zhengwei Du, Ke Gong","doi":"10.1109/ICMMT.2004.1411492","DOIUrl":"https://doi.org/10.1109/ICMMT.2004.1411492","url":null,"abstract":"Ray-tracing method is an effective method for wireless propagation predictions. In general there are two methods to calculate the path loss for a given receive point. One is by summing up the individual ray's power; the other is to sum up individual ray's electronic field. In this paper a ray-tracing simulation program is used and the two methods are compared at 2GHz. The simulation results show that the second method more agrees with the measurement results. Then, the properties of the K-factor in the indoor environment are analyzed using this tool.","PeriodicalId":393410,"journal":{"name":"ICMMT 4th International Conference on, Proceedings Microwave and Millimeter Wave Technology, 2004.","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125480404","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: 5
Equivalent radiometric section coefficient of metal solid objects 金属固体的等效辐射截面系数
ICMMT 4th International Conference on, Proceedings Microwave and Millimeter Wave Technology, 2004. Pub Date : 2004-08-18 DOI: 10.1109/ICMMT.2004.1411687
Guang-feng Zhang, Zuyin Zhang, W. Guo
{"title":"Equivalent radiometric section coefficient of metal solid objects","authors":"Guang-feng Zhang, Zuyin Zhang, W. Guo","doi":"10.1109/ICMMT.2004.1411687","DOIUrl":"https://doi.org/10.1109/ICMMT.2004.1411687","url":null,"abstract":"It is necessary to study the radiation characteristic of metal solid objects for millimeter wave passive guidance. On the basis of discussing the grounded theory, the antenna temperature contrast formula of metal solid objects is presented. Furthermore equivalent radiometric section coefficient based on scale-shrinking measuring theory is proposed in favor of engineering applications. The 8 mm theoretical calculation and actual measurement are mostly below 1K. So, equivalent radiometric section coefficient gives a virtual way for engineering measurement of metal solid objects.","PeriodicalId":393410,"journal":{"name":"ICMMT 4th International Conference on, Proceedings Microwave and Millimeter Wave Technology, 2004.","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126720921","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
Implementation of mixed feedback/feedforward analog and digital AGC 混合反馈/前馈模拟和数字AGC的实现
ICMMT 4th International Conference on, Proceedings Microwave and Millimeter Wave Technology, 2004. Pub Date : 2004-08-18 DOI: 10.1109/ICMMT.2004.1411545
Wang Wenzhao, Chen Yaqin, Zhou Qi
{"title":"Implementation of mixed feedback/feedforward analog and digital AGC","authors":"Wang Wenzhao, Chen Yaqin, Zhou Qi","doi":"10.1109/ICMMT.2004.1411545","DOIUrl":"https://doi.org/10.1109/ICMMT.2004.1411545","url":null,"abstract":"AGC usually be used in receiver for regulating an arbitrary input-signal to some specified power level. Every kind of AGC form have themselves advantages and disadvantages. In this paper, some kinds of AGC are compared. Basis of the comparison, this paper describe a new AGC named as mixed feedback/feedforward analog and digital AGC, and implement the AGC in a RF receiver used in the wireless communication.","PeriodicalId":393410,"journal":{"name":"ICMMT 4th International Conference on, Proceedings Microwave and Millimeter Wave Technology, 2004.","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122539309","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
Spatial interpolation method for solution of electromagnetic scattering from objects located in half-space 求解半空间物体电磁散射的空间插值方法
ICMMT 4th International Conference on, Proceedings Microwave and Millimeter Wave Technology, 2004. Pub Date : 2004-08-18 DOI: 10.1109/ICMMT.2004.1411487
Liming Xu, Z. Nie, Jun Hu, Jun Wang
{"title":"Spatial interpolation method for solution of electromagnetic scattering from objects located in half-space","authors":"Liming Xu, Z. Nie, Jun Hu, Jun Wang","doi":"10.1109/ICMMT.2004.1411487","DOIUrl":"https://doi.org/10.1109/ICMMT.2004.1411487","url":null,"abstract":"Efficient evaluation of spatial Green's functions is a key to solve radiation and scattering from the objects located in half-space by integral equation method. In this paper, tabulation and interpolation for Sommerfeld integrals are discussed to calculate spatial Green's functions for half-space. If the object is located in the same half-space, a 2D interpolation scheme is requested; if penetration occurs, 3D one is requested. In order to reduce the number of sampling points and to obtain better accuracy, a modified interpolation technique is employed to smoothen the interpolated functions from which an oscillatory term or a singular factor is extracted out. Since the proposed method makes the best of the slowly varying spatial characteristics, spatial repetition and cylindrical symmetry of the spatial Green's functions, tremendous computation effort is avoided as well as efficiency of impedance matrix filling is enhanced.","PeriodicalId":393410,"journal":{"name":"ICMMT 4th International Conference on, Proceedings Microwave and Millimeter Wave Technology, 2004.","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122334483","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: 4
Reduced-size microstrip antenna for mobile communication 用于移动通信的小尺寸微带天线
ICMMT 4th International Conference on, Proceedings Microwave and Millimeter Wave Technology, 2004. Pub Date : 2004-08-18 DOI: 10.1109/ICMMT.2004.1411465
Sun Zhigang, Liu Ping
{"title":"Reduced-size microstrip antenna for mobile communication","authors":"Sun Zhigang, Liu Ping","doi":"10.1109/ICMMT.2004.1411465","DOIUrl":"https://doi.org/10.1109/ICMMT.2004.1411465","url":null,"abstract":"Microstrip antenna is considered to reduce its size for mobile communication terminal where limited antenna size is a premium. Several techniques which can be used to effectively reduce the antenna size are introduced. Subsequently valuable insight to the optimum design, namely broad bandwidth, small size, and ease of manufacturing, is given.","PeriodicalId":393410,"journal":{"name":"ICMMT 4th International Conference on, Proceedings Microwave and Millimeter Wave Technology, 2004.","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124994194","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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