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

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Parameter correction of the microwave differential technique for dielectric constant measurement based on numerical simulation 基于数值模拟的介电常数微波差分测量技术参数校正
2008 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2008-04-21 DOI: 10.1109/ICMMT.2008.4540477
M. Noruzi, A. Abdipour, G. Moradi
{"title":"Parameter correction of the microwave differential technique for dielectric constant measurement based on numerical simulation","authors":"M. Noruzi, A. Abdipour, G. Moradi","doi":"10.1109/ICMMT.2008.4540477","DOIUrl":"https://doi.org/10.1109/ICMMT.2008.4540477","url":null,"abstract":"A resonant-cavity based microwave differential technique has been developed and used for the detection of a dielectric constant and for correction of the virial coefficients of Clausius-Mossotti equation. The determination of changes in dielectric constant is related to the shift in the resonant frequency of a measuring cavity compared to a reference cavity. In this article we investigate the best conditions for the measurement to increase the sensitivity of system. Because of some unavoidable differences in the physical dimensions and electrical characteristics of the setup components, we studied the variation of the circuit parameters that could significantly have an impact on the sensitivity of the method.","PeriodicalId":315133,"journal":{"name":"2008 International Conference on Microwave and Millimeter Wave Technology","volume":"18 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":"115409462","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
A novel efficient algorithm for surface mesh segmentation 一种新的高效曲面网格分割算法
2008 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2008-04-21 DOI: 10.1109/ICMMT.2008.4540501
Junhe Zhou, M. Zhang, Hongli Wang
{"title":"A novel efficient algorithm for surface mesh segmentation","authors":"Junhe Zhou, M. Zhang, Hongli Wang","doi":"10.1109/ICMMT.2008.4540501","DOIUrl":"https://doi.org/10.1109/ICMMT.2008.4540501","url":null,"abstract":"In this paper, we propose a novel point in triangle-mesh polyhedron algorithm, which is based on the Jordan theorem, for surface mesh segmentation. The algorithm tried to find whether there is intersection between the radial initiating from the point and the triangle by judging whether the point is inside a tetrahedron. The point in tetrahedron algorithm could be efficient by simply comparing the volume of the tetrahedron and summation of the volumes of the four small tetrahedrons. The efficiency of the algorithm is greatly improved in comparison with the simple Jordan algorithm.","PeriodicalId":315133,"journal":{"name":"2008 International Conference on Microwave and Millimeter Wave Technology","volume":"6 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":"115472201","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
Measurement and error analysis for C-band 15 meter TT&C station antenna G/T using Taurus A 金牛座A型c波段15米测控站天线G/T的测量与误差分析
2008 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2008-04-21 DOI: 10.1109/ICMMT.2008.4540478
Shun-you Qin, Xiao-qiang Wang
{"title":"Measurement and error analysis for C-band 15 meter TT&C station antenna G/T using Taurus A","authors":"Shun-you Qin, Xiao-qiang Wang","doi":"10.1109/ICMMT.2008.4540478","DOIUrl":"https://doi.org/10.1109/ICMMT.2008.4540478","url":null,"abstract":"Principle and method of measuring the earth station antenna G/T are described simply using radio stars. Calculating formula of various correct factors are given. Operating frequency band performance of C-band 15 meter TT&C station antenna G/T are measured directly using Taurus A, and measuring results accord well with prediction. Finally, G/T measurement error is analyzed, the results show that max RMS error of G/T measurement is less than or equal to plusmn0.38 dB in operating frequency band.","PeriodicalId":315133,"journal":{"name":"2008 International Conference on Microwave and Millimeter Wave Technology","volume":"56 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":"124298117","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
Application of two-dimensional Nonuniform Fast Fourier Transform (2-D NUFFT) technique in synthetic aperture radiometer imaging 二维非均匀快速傅里叶变换(2-D NUFFT)技术在合成孔径辐射计成像中的应用
2008 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2008-04-21 DOI: 10.1109/ICMMT.2008.4540524
Xiaoping Zhou, Jiwei He, Xin Lu
{"title":"Application of two-dimensional Nonuniform Fast Fourier Transform (2-D NUFFT) technique in synthetic aperture radiometer imaging","authors":"Xiaoping Zhou, Jiwei He, Xin Lu","doi":"10.1109/ICMMT.2008.4540524","DOIUrl":"https://doi.org/10.1109/ICMMT.2008.4540524","url":null,"abstract":"This paper presents an accelerating Nonuniform Fast Fourier Transform (NUFFT) algorithm for imaging reconstruction of two-dimensional synthetic aperture radiometer. This algorithm relies on a mixture of the fast Gaussian gridding algorithm and the judicious use of the FFT on an oversampled grid. It is not limited for an equal spaced visibility function sampling, and has the advantage in storage compared with the traditional gridding method. It is also beneficial for the system optimization by testing a new antenna array configuration. The numerical simulation results indicate that the proposed algorithm is accurate and high-speed.","PeriodicalId":315133,"journal":{"name":"2008 International Conference on Microwave and Millimeter Wave Technology","volume":"113 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":"124359942","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
Researchment and design of CMOS low noise amplifier in UHF band 超高频CMOS低噪声放大器的研究与设计
2008 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2008-04-21 DOI: 10.1109/ICMMT.2008.4540351
Hua-qing Xiao, X. Xiong, C. Liao
{"title":"Researchment and design of CMOS low noise amplifier in UHF band","authors":"Hua-qing Xiao, X. Xiong, C. Liao","doi":"10.1109/ICMMT.2008.4540351","DOIUrl":"https://doi.org/10.1109/ICMMT.2008.4540351","url":null,"abstract":"To overcome difficulties among power, noise figure(NF) and match in the design of low-noise amplifier(LNA), a novel approach that can realize effective compromise among them is presented through analyzing the cascade LNA configuration. Under the premise that power can be accepted, the new approach can be achieved by adopting series inductors in input port, adding capacitors between gate and source nodes and appending series inductor-resistance to the output port. Experimental results show that, with the proposed approach, a 0.18 mum CMOS LNA at 2.4 GHz could provide a maximum NF of 0.46 dB, a minimum power gain of 22 dB in 3 dB bandwidth, input and output VSWRs which are better than 1.12, the output P1dB power of 1.07 dBm and 25.02 mW whole power consume. Theory analysis agrees well with the simulation results.","PeriodicalId":315133,"journal":{"name":"2008 International Conference on Microwave and Millimeter Wave Technology","volume":"41 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":"116884673","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
Optimized desgin of circularly polarized wideband stacked microstrip antenna with single-fed 单馈圆极化宽带堆叠微带天线的优化设计
2008 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2008-04-21 DOI: 10.1109/ICMMT.2008.4540783
Ye Jianfeng, Pang Weizheng, Wang Yufeng, Lv Daxin, Chen Yan
{"title":"Optimized desgin of circularly polarized wideband stacked microstrip antenna with single-fed","authors":"Ye Jianfeng, Pang Weizheng, Wang Yufeng, Lv Daxin, Chen Yan","doi":"10.1109/ICMMT.2008.4540783","DOIUrl":"https://doi.org/10.1109/ICMMT.2008.4540783","url":null,"abstract":"A method of developing the quality of circularly polarized microstrip antennas using the \"almost square\" patch is presented particularly. Antennas are designed and optimized with patches printed on foam and common dielectric substrate, which separately have over 17% and 14% 3 dB axial ratio (AR) bandwidth. The latter has been fabricated and measured, the measurements agree well with simulated results.","PeriodicalId":315133,"journal":{"name":"2008 International Conference on Microwave and Millimeter Wave Technology","volume":"8 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":"123627873","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
Impact of signal bandwidth on airborne wideband radar echoes 信号带宽对机载宽带雷达回波的影响
2008 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2008-04-21 DOI: 10.1109/ICMMT.2008.4540741
Zhao Jian-hong, Yang Jian-yu, Peng Wei, Tang Bin
{"title":"Impact of signal bandwidth on airborne wideband radar echoes","authors":"Zhao Jian-hong, Yang Jian-yu, Peng Wei, Tang Bin","doi":"10.1109/ICMMT.2008.4540741","DOIUrl":"https://doi.org/10.1109/ICMMT.2008.4540741","url":null,"abstract":"Model the output echo power from the matched filter of airborne radar receiver. Based on the same pulse time width, the same transmitted power and the same radar operation scene, signal-clutter-noise power ratio of the matched filter output is presented, and some new results different from the intuitionistic viewpoints is put forward. The impact of signal bandwidth on airborne radar echoes and target detector is discussed in detail. At last, computer simulations about typical airborne radar operation scene provide the verification and analysis.","PeriodicalId":315133,"journal":{"name":"2008 International Conference on Microwave and Millimeter Wave Technology","volume":"27 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":"123654910","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
A folded dipole antenna for RFID tag 用于RFID标签的折叠偶极子天线
2008 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2008-04-21 DOI: 10.1109/ICMMT.2008.4540601
Bing Yang, Q. Feng
{"title":"A folded dipole antenna for RFID tag","authors":"Bing Yang, Q. Feng","doi":"10.1109/ICMMT.2008.4540601","DOIUrl":"https://doi.org/10.1109/ICMMT.2008.4540601","url":null,"abstract":"In this paper we designed a folded dipole antenna for RFID tag, the influence of the antenna's geometrical parameter to the antenna's resonant frequency and impedance is presented, The simulation results demonstrate that the changing geometrical parameter of the folded dipole antenna is an effect method to adjust the input impedance and resonant frequency, and it is better than half wave dipole antenna in adjustability, it's suitable for the application of RFID tag antenna.","PeriodicalId":315133,"journal":{"name":"2008 International Conference on Microwave and Millimeter Wave Technology","volume":"250 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":"124756860","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: 16
An unconditionally-stable FDTD method based on split-step scheme for solving three-dimensional maxwell equations 基于分步格式的无条件稳定时域有限差分法求解三维麦克斯韦方程组
2008 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2008-04-21 DOI: 10.1109/ICMMT.2008.4540338
Yong-Dan Kong, Q. Chu
{"title":"An unconditionally-stable FDTD method based on split-step scheme for solving three-dimensional maxwell equations","authors":"Yong-Dan Kong, Q. Chu","doi":"10.1109/ICMMT.2008.4540338","DOIUrl":"https://doi.org/10.1109/ICMMT.2008.4540338","url":null,"abstract":"A new split-step finite-difference time-domain (FDTD) method for solving three-dimensional Maxwell's equations is presented, which is proven to be unconditionally-stable and has simpler procedure formulation than the operator splitting (OS) FDTD method based on exponential evolution operator scheme. The proposed method has the new splitting forms along the x, y and z coordinate directions to reduce computational complexity and the second-order accuracy in both time and space. In the application of a cavity, the proposed method produces 35% reduction of the run time than the split-step (SS)-FDTD (2, 2) method.","PeriodicalId":315133,"journal":{"name":"2008 International Conference on Microwave and Millimeter Wave Technology","volume":"64 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":"129522688","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: 11
Approaches for improving LO-RF isolation of MMIC 90°-hybrid-IRM 提高90°MMIC -hybrid-IRM低射频隔离的方法
2008 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2008-04-21 DOI: 10.1109/ICMMT.2008.4540455
Shen Yiming, Peng Longxin
{"title":"Approaches for improving LO-RF isolation of MMIC 90°-hybrid-IRM","authors":"Shen Yiming, Peng Longxin","doi":"10.1109/ICMMT.2008.4540455","DOIUrl":"https://doi.org/10.1109/ICMMT.2008.4540455","url":null,"abstract":"Image reject mixer (IRM) is one of common devices used in microwave receivers. A classical structure is IQ output single balanced Schottky diode mixer using 90deg hybrid. It's widely used in many engineering areas. The advantages of this structure are high-dynamic range capability, good VSWRs and suppression of noises. But the disadvantage caused by this structure is poor LO-RF isolation. This paper gives some methods to improve the LO-RF isolation of MMIC IQ output single balanced Schottky diode mixer and analyses the influence on the other performances. It also gives a simulative and experimental result of MMIC Ka-band mixer design using these methods.","PeriodicalId":315133,"journal":{"name":"2008 International Conference on Microwave and Millimeter Wave Technology","volume":"2 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":"129682964","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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