发布求助
文献互助 智能选刊 最新文献

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

筛选
英文 中文
Time Domain Analysis of UWB Pulsed Field Diffraction 超宽带脉冲场衍射的时域分析
2007 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2007-04-18 DOI: 10.1109/ICMMT.2007.381343
Wang Yang, Zhang Qinyu, Zhang Nai-tong, Zhi Xin-wei
{"title":"Time Domain Analysis of UWB Pulsed Field Diffraction","authors":"Wang Yang, Zhang Qinyu, Zhang Nai-tong, Zhi Xin-wei","doi":"10.1109/ICMMT.2007.381343","DOIUrl":"https://doi.org/10.1109/ICMMT.2007.381343","url":null,"abstract":"A time-domain version of the uniform geometrical theory of diffraction (TD-UTD) is introduced to describe, in closed form, the UWB transient electromagnetic diffracted by a perfectly conducting wedge. This TD-UTD impulse response is obtained by a Fourier inversion of the corresponding frequency domain UTD solution. The UWB pulsed diffracted excitation of the wedge may be found via its convolution with the closed form time domain dyadic diffraction coefficient. Some numerical examples, which illustrate the utility of these developments and give more intrinsically interpretations for the mechanics as well as characteristics of UWB pulse diffraction, are presented.","PeriodicalId":409971,"journal":{"name":"2007 International Conference on Microwave and Millimeter Wave Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2007-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122514241","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 and Design of the Dual-Band Low Noise Amplifier 双频低噪声放大器的研究与设计
2007 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2007-04-18 DOI: 10.1109/ICMMT.2007.381399
Wu Pan, Bing Long, J. Ye
{"title":"Study and Design of the Dual-Band Low Noise Amplifier","authors":"Wu Pan, Bing Long, J. Ye","doi":"10.1109/ICMMT.2007.381399","DOIUrl":"https://doi.org/10.1109/ICMMT.2007.381399","url":null,"abstract":"A dual-band source-inductive-degeneration cascoded low noise amplifier, whose center frequencies are 940 MHz and 2020 MHz respectively, based on common usage of the component independent of the frequency, was investigated and designed in this paper. The interstage mutual coupled inductors provide the required input impedance matching and interstage impedance transformation. The circuit's reverse isolation for the cascoded LNA is improved. The parallel capacitance between the MOSFET's gate and source optimize noise factor of the LNA. The matching network design, the noise optimizing were analyzed hereof. The development of LNA and the methods of NF optimization were studied. The designed LNA achieves power gains of 26 dB and 25 dB, and minimum noise figure of 1.1 dB and 2.0 dB, and power of 10.5 mw with 1.5 voltages respectively.","PeriodicalId":409971,"journal":{"name":"2007 International Conference on Microwave and Millimeter Wave Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2007-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124394437","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
Optical Properties of Ellipsoidal Particles in the Geometrical Optics Approximation 几何光学近似中椭球粒子的光学性质
2007 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2007-04-18 DOI: 10.1109/ICMMT.2007.381322
Yanjun Gong, Zhensen Wu, Wenying Yu
{"title":"Optical Properties of Ellipsoidal Particles in the Geometrical Optics Approximation","authors":"Yanjun Gong, Zhensen Wu, Wenying Yu","doi":"10.1109/ICMMT.2007.381322","DOIUrl":"https://doi.org/10.1109/ICMMT.2007.381322","url":null,"abstract":"A new geometric-optics model has been developed for the calculation of polarization properties for ellipsoidal particles. The model uses the ray-tracing technique to solve the near field on the ellipsoidal particle surface, which is then transformed to the far field on the basis of the electromagnetic equivalence theorem. Sphere is special ellipsoid, so this method can calculate polarization properties of sphere particles. From comparisons with the results computed by the Mie method for sphere particle, we show that the novel geometric-optics method can be applied to the computation of the phase function of ellipsoidal particles whose size parameters along the minimum dimension are larger than 30.","PeriodicalId":409971,"journal":{"name":"2007 International Conference on Microwave and Millimeter Wave Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2007-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127648430","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
Generation of Transmission Zero through Electric and Magnetic Mixed Coupling 通过电磁混合耦合产生传动零
2007 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2007-04-18 DOI: 10.1109/ICMMT.2007.381425
Huan Wang, Q. Chu
{"title":"Generation of Transmission Zero through Electric and Magnetic Mixed Coupling","authors":"Huan Wang, Q. Chu","doi":"10.1109/ICMMT.2007.381425","DOIUrl":"https://doi.org/10.1109/ICMMT.2007.381425","url":null,"abstract":"A novel method to generate a transmission zero is proposed through both electric and magnetic mixed coupling between two coupled resonators without using any additional cross coupling. A novel equivalent circuit model of two coupled resonators with both electric and magnetic mixed coupling is given to analyze the principle of this approach. An example of two coupled TE01 mode dielectric resonators coupled by both an iris and a probe is illustrated to prove the availability of the proposed method.","PeriodicalId":409971,"journal":{"name":"2007 International Conference on Microwave and Millimeter Wave Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2007-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116339185","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: 10
Microwave analog and simulation in open quantum dots 开放量子点微波模拟与仿真
2007 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2007-04-18 DOI: 10.1109/ICMMT.2007.381351
X. Luo, B. Zeng
{"title":"Microwave analog and simulation in open quantum dots","authors":"X. Luo, B. Zeng","doi":"10.1109/ICMMT.2007.381351","DOIUrl":"https://doi.org/10.1109/ICMMT.2007.381351","url":null,"abstract":"Electrons in open quantum dots could be regarded as resonance of electron wave in a potential. The relationship between the wave function of quantum dots and the electromagnetic wave in open resonance cavity was studied by theoretically. On this base, the characters including transmission function and distribution of field in corresponding open cavity were simulated by using electromagnetic code: HFSS (High Frequency Structure Simulator). The simulation results agree with the experimental results. This method could be used study the properties of quantum dots and electron wave guide.","PeriodicalId":409971,"journal":{"name":"2007 International Conference on Microwave and Millimeter Wave Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2007-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114184106","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
Spectral Methods for Accurate Identification and Quantification of Memory Effects of Wideband RF Power Amplifiers 宽带射频功率放大器记忆效应准确识别和定量的光谱方法
2007 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2007-04-18 DOI: 10.1109/ICMMT.2007.381477
Taijun Liu, Yan Ye, Xingbin Zeng, S. Boumaiza, Jiaming He, F. Ghannouchi
{"title":"Spectral Methods for Accurate Identification and Quantification of Memory Effects of Wideband RF Power Amplifiers","authors":"Taijun Liu, Yan Ye, Xingbin Zeng, S. Boumaiza, Jiaming He, F. Ghannouchi","doi":"10.1109/ICMMT.2007.381477","DOIUrl":"https://doi.org/10.1109/ICMMT.2007.381477","url":null,"abstract":"In this paper, a spectral method based on the memoryless predistortion technique is presented to identify accurately the memory effects of wideband RF power amplifiers stimulated by practical modulated signals. According to this new definition of the memory effects, a novel metric to measure quantitatively the memory effects in wideband power amplifiers is proposed. With the proposed memory effect metrics, the intensity of the memory effects for different power amplifiers, under a variety of the excitation modulated signals, can be quantitatively evaluated.","PeriodicalId":409971,"journal":{"name":"2007 International Conference on Microwave and Millimeter Wave Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2007-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125338923","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
A New Equivalent Circuit Model of MIM Capacitor for RFIC 一种新的RFIC用MIM电容等效电路模型
2007 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2007-04-18 DOI: 10.1109/ICMMT.2007.381401
Li Lintao, Wan Jinxiang, Feng-Chang Lai
{"title":"A New Equivalent Circuit Model of MIM Capacitor for RFIC","authors":"Li Lintao, Wan Jinxiang, Feng-Chang Lai","doi":"10.1109/ICMMT.2007.381401","DOIUrl":"https://doi.org/10.1109/ICMMT.2007.381401","url":null,"abstract":"A new scalable Metal-Insulator-Metal (MIM) capacitor model is presented for RF (Radio Frequency) applications. Four MIM capacitors were fabricated in 0.13 U m CMOS technology. Using physical analysis based on the new model, parameter optimization and curve fitting, the scaling rules are given for all elements on the circuit model. The model fits very well with the measured data in the frequency range 500 MHz-10.01 GHz. The results show that the proposed model provides accurate results, while retaining the physical properties of every element in the model.","PeriodicalId":409971,"journal":{"name":"2007 International Conference on Microwave and Millimeter Wave Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2007-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126338803","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
3D-Fractal Rectangular Koch Dipole and Hilbert Dipole Antennas 三维分形矩形科赫偶极子和希尔伯特偶极子天线
2007 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2007-04-18 DOI: 10.1109/ICMMT.2007.381294
H. Elkamchouchi, M. Nasr
{"title":"3D-Fractal Rectangular Koch Dipole and Hilbert Dipole Antennas","authors":"H. Elkamchouchi, M. Nasr","doi":"10.1109/ICMMT.2007.381294","DOIUrl":"https://doi.org/10.1109/ICMMT.2007.381294","url":null,"abstract":"3D-fractal rectangular Koch dipole and 3D-fractal Hilbert dipole antennas made of wires are introduced. Theses antennas exhibit lower resonant frequencies and small volume occupations. The performance characteristics of the proposed antennas are examined and compared with successive iterations for the same antenna height for the 3D-fractal rectangular Koch dipole antenna and for the same wire length for the 3D-fractal Hilbert dipole antenna. The radiation properties are considered including input impedance and VSWR as functions of frequency. Also resonant frequencies and their corresponding radiation resistance, quality factor Q and radiation patterns are presented.","PeriodicalId":409971,"journal":{"name":"2007 International Conference on Microwave and Millimeter Wave Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2007-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124801727","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: 9
Room temperature pre-aberrational technology applied in the microwave equalizer design 室温预像差技术在微波均衡器设计中的应用
2007 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2007-04-18 DOI: 10.1109/ICMMT.2007.381423
Yang Mingshan, D. Xiaoyan, Niu Zhongxia
{"title":"Room temperature pre-aberrational technology applied in the microwave equalizer design","authors":"Yang Mingshan, D. Xiaoyan, Niu Zhongxia","doi":"10.1109/ICMMT.2007.381423","DOIUrl":"https://doi.org/10.1109/ICMMT.2007.381423","url":null,"abstract":"The gain frequency characteristic and input-output characteristic of microwave vacuum tube were analyzed. That the attenuation frequency characteristic of matched equalizer is not a single curve but a permitted range was expatiated. Normally, averaging the upper limit and lower limit acts as room equalized curve, this should be controlled not to overrun the limit in all different conditions. The rule of equalized curve shift with temperature was concluded from large amount of measured data analysis; the shifts are not symmetry in high temperature and low temperature but complex with many influence factors. Room temperature aberrant equalized curve at some frequency band, where some substructural resonant curves shifted beyond the limit, was designed to considered all-inclusive property at room temperature, high temperature and low temperature. The pre-aberration technology, which needs large amount of design and tuning again and again to get experience, is an effective method in the equalizer design and other similar microwave device design.","PeriodicalId":409971,"journal":{"name":"2007 International Conference on Microwave and Millimeter Wave Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2007-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123279078","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
One Mathematical Model for Analyzing DBF Error in Smart Antenna System 智能天线系统DBF误差分析的数学模型
2007 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2007-04-18 DOI: 10.1109/ICMMT.2007.381298
Qingchun Zhang, Weizhao Li, Meng Cao, Zhengyi Li, Zhenghe Feng
{"title":"One Mathematical Model for Analyzing DBF Error in Smart Antenna System","authors":"Qingchun Zhang, Weizhao Li, Meng Cao, Zhengyi Li, Zhenghe Feng","doi":"10.1109/ICMMT.2007.381298","DOIUrl":"https://doi.org/10.1109/ICMMT.2007.381298","url":null,"abstract":"Nowadays, digital beam forming (DBF) technology is more and more widely used in communication and radar systems. But in most situations, lots of errors such as the array position uncertainty or RF channel dissimilarity, A/D sampling deviation, etc., usually make the actual result deviated from the theory analysis. In this paper, firstly, the effects caused by these uncertainties are illustrated, then a new mathematical model is set up to estimate these errors, and finally the model is proved very useful by the simulation results.","PeriodicalId":409971,"journal":{"name":"2007 International Conference on Microwave and Millimeter Wave Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2007-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131718213","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
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信