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2008 International Conference on Microwave and Millimeter Wave Technology最新文献

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A modified broadband transmission line model for rectangular patch antennas 矩形贴片天线的改进宽带传输线模型
2008 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2008-11-01 DOI: 10.1109/AMTA.2008.4763194
K. Mousskhani, A. Ghorbani
{"title":"A modified broadband transmission line model for rectangular patch antennas","authors":"K. Mousskhani, A. Ghorbani","doi":"10.1109/AMTA.2008.4763194","DOIUrl":"https://doi.org/10.1109/AMTA.2008.4763194","url":null,"abstract":"The purpose of this paper is to present a broadband circuit model for rectangular patch antennas. It has been shown that how the transmission line model can still be used to determine the input characteristic over a large band of frequencies with minor adjustments. The models developed by Deanley and Pues have been chosen as the basis for this work as they fairly complete and give good results. Pues model has been applied with adjustment for fundamental mode, whereas for obtaining accurate model for higher modes, Wilkinson power divider is used to combine them and filters and matching networks are added to obtain broadband circuit model, the effect of higher order modes excited in the patch, can easily be incorporated in CAD software, with little computational effort. Eventually, we have introduced a broadband circuit model for rectangular microstrip antennas. Finally our results are compared with the results obtained form Method of Moment for same antennas.","PeriodicalId":315133,"journal":{"name":"2008 International Conference on Microwave and Millimeter Wave Technology","volume":"16 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134359973","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
Power statistical analysis for digitally modulated signals and its applications 数字调制信号的功率统计分析及其应用
2008 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2008-06-13 DOI: 10.1109/ICMMT.2008.4540468
Zhao Hao, Leng Peng
{"title":"Power statistical analysis for digitally modulated signals and its applications","authors":"Zhao Hao, Leng Peng","doi":"10.1109/ICMMT.2008.4540468","DOIUrl":"https://doi.org/10.1109/ICMMT.2008.4540468","url":null,"abstract":"Digital modulation has created a revolution in RF and microwave communications. The traditional methods of peak power measurement can no longer fully satisfy its test requirements. So the statistical methods are introduced to analyze the characteristics of the digitally modulated signals. In this paper, the techniques used in peak power measurement are firstly proposed. Then the usual probability functions and their implementations in a peak power analyzer are discussed in detail. According to the complex digitally modulated signals in modern wireless communications and their power measurement demand, the statistical method of CCDF is fully studied. Emphasis is placed on the selection of modulation scheme, the design and test of RF component and the evaluation of spread-spectrum. In the end we draw a conclusion that CCDF can effectively describe the power statistical characteristics of digitally modulated signals and is becoming a necessary design and testing tool in wireless communication.","PeriodicalId":315133,"journal":{"name":"2008 International Conference on Microwave and Millimeter Wave Technology","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126683916","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
An investigation of statistical distribution properties in reverberation chamber 混响室内统计分布特性的研究
2008 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2008-04-21 DOI: 10.1109/ICMMT.2008.4540714
Qu Min, Lu Guizhen, Lin Jincai, Wang Yue, Guan Yalin
{"title":"An investigation of statistical distribution properties in reverberation chamber","authors":"Qu Min, Lu Guizhen, Lin Jincai, Wang Yue, Guan Yalin","doi":"10.1109/ICMMT.2008.4540714","DOIUrl":"https://doi.org/10.1109/ICMMT.2008.4540714","url":null,"abstract":"In the paper, the measurements for statistical model in the reverberation chamber (RC) are presented. The model of probability density function (PDF) is studied. The results of measurements are analyzed with respect to the corresponding ideal theoretical model. The function is observed over a frequency range that allows for the conditions in the chamber to vary from under-moded operation to overmoded operation (1 GHz- 9 GHz). Ultimately, the paper states that the distribution of the field power density at the certain position in the RC fits a Weibull distribution.","PeriodicalId":315133,"journal":{"name":"2008 International Conference on Microwave and Millimeter Wave Technology","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115365646","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
Wideband microstrip bandpass filter using single patch resonator 采用单贴片谐振器的宽带微带带通滤波器
2008 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2008-04-21 DOI: 10.1109/ICMMT.2008.4540723
Jian‐Kang Xiao, Hui-fen Huang, Wu‐Sheng Ji
{"title":"Wideband microstrip bandpass filter using single patch resonator","authors":"Jian‐Kang Xiao, Hui-fen Huang, Wu‐Sheng Ji","doi":"10.1109/ICMMT.2008.4540723","DOIUrl":"https://doi.org/10.1109/ICMMT.2008.4540723","url":null,"abstract":"Fractal-shaped microwave passive circuits attract much attention recently, but dominantly applied in antennas. In this report, new fractal bandpass filters using equilateral triangular patch resonator are presented to implement high performances of multi-transmission zeros, wide passband and stopband, and low passband insertion loss as well as miniaturization. Using fractal defection in patch, multi higher order modes are driven for coupling a much wider passband, and parasitical harmonics are effectively suppressed as well. Compared with some literatures, sizes of the new filters reduced and performances are greatly enhanced. The proposed filters have compact and simple structures, small sizes, high selectivity and so on, and all these features are the requirement of wireless communication systems.","PeriodicalId":315133,"journal":{"name":"2008 International Conference on Microwave and Millimeter Wave Technology","volume":"92 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124424290","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
Two kind of structure configurations small size LTCC filters 两种结构配置的小尺寸LTCC滤波器
2008 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2008-04-21 DOI: 10.1109/ICMMT.2008.4540366
Z. Xiangjun
{"title":"Two kind of structure configurations small size LTCC filters","authors":"Z. Xiangjun","doi":"10.1109/ICMMT.2008.4540366","DOIUrl":"https://doi.org/10.1109/ICMMT.2008.4540366","url":null,"abstract":"The design of two kind structure configurations of LTCC filters was introduced, which is based on classical design theory of bandpass filter. The first kind of filter uses conventional LC-type resonators with a feed back capacitor between the input and output. The second kind of filter exploits multilayer coupled stripline structure configuration, the structure shows the promising application potential in miniaturized RF components. The measured results of first kind of filter agree very well with the full-wave electromagnetic simulation results. Comparisons between these two kinds of filters are made for guiding filter design.","PeriodicalId":315133,"journal":{"name":"2008 International Conference on Microwave and Millimeter Wave Technology","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116991362","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
Research on transmission characteristics of upswept-ridge waveguide by the FEM 上掠脊波导传输特性的有限元研究
2008 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2008-04-21 DOI: 10.1109/ICMMT.2008.4540440
Hai Sun, Mai Lu
{"title":"Research on transmission characteristics of upswept-ridge waveguide by the FEM","authors":"Hai Sun, Mai Lu","doi":"10.1109/ICMMT.2008.4540440","DOIUrl":"https://doi.org/10.1109/ICMMT.2008.4540440","url":null,"abstract":"The finite element method is introduced to analyze the transmission characteristics of upswept-ridge waveguide, variations of the cutoff wavelength of the dominant mode and single-mode bandwidth with the ridge dimensions for different values are calculated, field patterns of the dominant mode and the first higher-order TE mode are also illustrated. Numerical results in this article provide an extension to the existing design model of rectangular-ridge waveguides and considered to be helpful in practical applications.","PeriodicalId":315133,"journal":{"name":"2008 International Conference on Microwave and Millimeter Wave Technology","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117051157","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
The studies on coupling characteristics of microstrip complementary split ring resonators (CSRRs) 微带互补劈裂环谐振器耦合特性研究
2008 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2008-04-21 DOI: 10.1109/ICMMT.2008.4540364
S. Zhang, Falin Liu
{"title":"The studies on coupling characteristics of microstrip complementary split ring resonators (CSRRs)","authors":"S. Zhang, Falin Liu","doi":"10.1109/ICMMT.2008.4540364","DOIUrl":"https://doi.org/10.1109/ICMMT.2008.4540364","url":null,"abstract":"The coupling characteristics of three typical coupling structures for double CSRRs are studied in this paper firstly. One CSRR can couple to the other through electric coupling, magnetic coupling and mixed electromagnetic coupling respectively. Different coupling structures can cause different frequency responses, especially the stopband characteristics and the position of transmission poles. In order to find the influence of coupling spacing, a novel compact ultra-wideband (UWB) low-pass filter using double CSRRs is proposed. By adjusting the coupling spacing between two CSRRs, the spurious passband can be successfully suppressed. The stopband shows ultra-wideband and excellent insertion loss characteristics.","PeriodicalId":315133,"journal":{"name":"2008 International Conference on Microwave and Millimeter Wave Technology","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117115410","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: 3
Impact of the weighted mean temperature on the estimation of GPS precipitable water vapor 加权平均温度对GPS可降水量估算的影响
2008 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2008-04-21 DOI: 10.1109/ICMMT.2008.4540519
Yunchang Cao, Feifei Zheng, Yifeng Xie, Y. Bi
{"title":"Impact of the weighted mean temperature on the estimation of GPS precipitable water vapor","authors":"Yunchang Cao, Feifei Zheng, Yifeng Xie, Y. Bi","doi":"10.1109/ICMMT.2008.4540519","DOIUrl":"https://doi.org/10.1109/ICMMT.2008.4540519","url":null,"abstract":"The relationship of the weighted mean temperature and the surface temperature was obtained using the radiosonde observation in Anqing from 2004 to 2007. The weighted mean temperature estimated from the regressed formula is higher than that from the Bevis formula when the surface temperature increases, which introduces the difference of approximate 1.9% of the GPS precipitable water vapor when the surface temperature gets to 40degC, and smaller difference in the lower surface temperature. The different regressions between different years induce the difference of 0.72% of the GPS PWV when the surface temperature reaches 40degC, and the difference of 2.17% of the GPS PWV in the surface temperature of -10degC. It suggests that the regressed formula to estimate the weighted mean temperature will be beneficial for the estimation of the GPS PWV in the summer, while it has little positive impact on the estimation in the winter.","PeriodicalId":315133,"journal":{"name":"2008 International Conference on Microwave and Millimeter Wave Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117233057","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: 6
A novel diversity-multiplexing switched MIMO systems in rayleigh fading channels 一种新型的瑞利衰落信道分集复用切换MIMO系统
2008 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2008-04-21 DOI: 10.1109/ICMMT.2008.4540309
Zhibin Xie, Jinkuan Wang, Yun Wang, Jing Gao
{"title":"A novel diversity-multiplexing switched MIMO systems in rayleigh fading channels","authors":"Zhibin Xie, Jinkuan Wang, Yun Wang, Jing Gao","doi":"10.1109/ICMMT.2008.4540309","DOIUrl":"https://doi.org/10.1109/ICMMT.2008.4540309","url":null,"abstract":"This paper proposes a new switched criterion based on minimum error rate for multiple-input multiple-output (MIMO) systems. The proposed scheme is a closed-loop MIMO system, and the tradeoff between the diversity and multiplexing gains that can simultaneously achieved over a low-rate feedback channel with limited bits. Based on this criterion, a low complexity decision algorithm is proposed. The proposed scheme improves the performance of the receivers, achieves good performance close to the optimal algorithm, has much lower cost, and meets the real-time and rapidity requirements of communication systems. Simulation results demonstrate that the proposed decision algorithm achieves excellent performance.","PeriodicalId":315133,"journal":{"name":"2008 International Conference on Microwave and Millimeter Wave Technology","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121243057","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
Hardware-in-the-Loop simulation and testing system for Millimeter-Wave seeker 毫米波导引头半实物仿真与测试系统
2008 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2008-04-21 DOI: 10.1109/ICMMT.2008.4540473
Zhang Wei, Sun Hou-jun, L. Xin
{"title":"Hardware-in-the-Loop simulation and testing system for Millimeter-Wave seeker","authors":"Zhang Wei, Sun Hou-jun, L. Xin","doi":"10.1109/ICMMT.2008.4540473","DOIUrl":"https://doi.org/10.1109/ICMMT.2008.4540473","url":null,"abstract":"The implementation of integrated hardware-in-the-loop (HWIL) simulation and testing system for millimeter-wave (MMW) seeker was presented. The system can implement dynamic real-time testing for MMW seeker. The seeker's ability of detecting, identifying and tracking the target, can be checked and tested in a realistic flight scenario. The system configuration is described, and the implementation of its chief components was proposed which are the MMW scene generator, the high speed data acquisition subsystem, and the central control unit. This system could be applied to the simulation and testing of some types of MMW seeker which are on development.","PeriodicalId":315133,"journal":{"name":"2008 International Conference on Microwave and Millimeter Wave Technology","volume":"61 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121332371","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
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