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

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Novel even harmonic mixer for 3G mobile receivers 新型3G移动接收机均匀谐波混频器
2008 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2008-04-21 DOI: 10.2528/PIERM08012703
S. Shamsinejad, M. Soleimani, M. Tayarani, N. Komjani
{"title":"Novel even harmonic mixer for 3G mobile receivers","authors":"S. Shamsinejad, M. Soleimani, M. Tayarani, N. Komjani","doi":"10.2528/PIERM08012703","DOIUrl":"https://doi.org/10.2528/PIERM08012703","url":null,"abstract":"This paper reports a high IIP3 even harmonic mixer with a new circuit configuration. This mixer employs an antiparallel diode pair, open and short circuited stubs and a radial stub as filters to separate RF input signal, baseband output signal and LO power. This mixer is used for down converting 3G mobile downlink signal at 2140 MHz to baseband by using a local oscillator at 1070 MHz in direct conversion configuration. This mixer must comply with the requirements specified by 3G UMTS: 3rd order input intercept point=14.466 dBm ges 11 dBm, noise figure=9 dB and conversion loss=11 dB.","PeriodicalId":315133,"journal":{"name":"2008 International Conference on Microwave and Millimeter Wave Technology","volume":"14 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":"115917721","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
A compact square-ring printed monopole ultra wideband antenna 一种紧凑的方环印刷单极超宽带天线
2008 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2008-04-21 DOI: 10.1109/ICMMT.2008.4540781
H.-W. Deng, Xiaoxiang He, B. Yao, Yonggang Zhou
{"title":"A compact square-ring printed monopole ultra wideband antenna","authors":"H.-W. Deng, Xiaoxiang He, B. Yao, Yonggang Zhou","doi":"10.1109/ICMMT.2008.4540781","DOIUrl":"https://doi.org/10.1109/ICMMT.2008.4540781","url":null,"abstract":"A simple and compact microstrip-fed ultra wideband (UWB) printed monopole antenna is proposed in this paper. The antenna is composed of a square ring and occupies about 7.91 GHz bandwidth covering 3.09-11 GHz. The experimental and simulated results exhibit good agreement. The characteristics of the proposed antenna are analyzed, and the geometry parameters for optimal performance are also investigated in detail. A quasi-omnidirectionally and quasi- symmetrically radiation pattern in y-z plane is obtained. The results measured or simulated validated that the antenna satisfies the requirements of UWB communications, and will be a good solution for UWB applications.","PeriodicalId":315133,"journal":{"name":"2008 International Conference on Microwave and Millimeter Wave Technology","volume":"114 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":"132189974","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: 8
A more efficient mechanism of FDTD method based on message passing interface 基于消息传递接口的FDTD方法的一种更有效的机制
2008 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2008-04-21 DOI: 10.1109/ICMMT.2008.4540489
Xu Zhang, Xiaoming Liu, Shaohua Liu, Junsheng Yu, Ran Ding, Bingran Liu, Rui Xiao
{"title":"A more efficient mechanism of FDTD method based on message passing interface","authors":"Xu Zhang, Xiaoming Liu, Shaohua Liu, Junsheng Yu, Ran Ding, Bingran Liu, Rui Xiao","doi":"10.1109/ICMMT.2008.4540489","DOIUrl":"https://doi.org/10.1109/ICMMT.2008.4540489","url":null,"abstract":"Based on the message passing interface (MPI) implement of parallel FDTD, this paper puts forward a more efficient mechanism, which decreases the time of communication and synchronization so as to enhance the efficiency of parallel FDTD. The efficient mechanism mainly consists of overlapping model and logic layer model. In addition, this paper also analyzes the performance gain in various network environments. Meanwhile the mechanism reduces the interdependence between processes so that expanding parallel FDTD into grid computing (Foster et al., 2003) environment is feasible.","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":"132328169","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
A mobility pattern adaptive location management algorithm for GEO mobile satellite system GEO移动卫星系统移动模式自适应定位管理算法
2008 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2008-04-21 DOI: 10.1109/ICMMT.2008.4540883
Lick-Ho Song, Ai-jun Liu, Y. Ma
{"title":"A mobility pattern adaptive location management algorithm for GEO mobile satellite system","authors":"Lick-Ho Song, Ai-jun Liu, Y. Ma","doi":"10.1109/ICMMT.2008.4540883","DOIUrl":"https://doi.org/10.1109/ICMMT.2008.4540883","url":null,"abstract":"Different from the terrestrial cellular systems, the GEO mobile satellite system exhibits its own characteristics, such as the extremely large beams (cells), the long propagation delay, the stringent resources restriction and the diversity of the MES (mobile Earth station) velocity. Therefore, a location management algorithm with low complexity, called as MPA (mobility pattern adaptive) algorithm is proposed. In this algorithm, a restraining updating strategy was applied to the low velocity MES while the high velocity MES will establish a location area visiting list and adjust its updating strategy adaptively based on its mobility pattern which is learned from the visiting list. The algorithm proposed can remarkably reduce the average signaling load on location management. Furthermore, this algorithm has a favorable adaptability to the MES with various CMR (call mobility ratio) value.","PeriodicalId":315133,"journal":{"name":"2008 International Conference on Microwave and Millimeter Wave Technology","volume":"90 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":"132500865","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
Modified motion parameter estimation for space object imaging 空间目标成像的改进运动参数估计
2008 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2008-04-21 DOI: 10.1109/ICMMT.2008.4540895
Zhen Fu, Zhiping Yin, Dongchen Zhang, Weidong Chen
{"title":"Modified motion parameter estimation for space object imaging","authors":"Zhen Fu, Zhiping Yin, Dongchen Zhang, Weidong Chen","doi":"10.1109/ICMMT.2008.4540895","DOIUrl":"https://doi.org/10.1109/ICMMT.2008.4540895","url":null,"abstract":"Aiming at the engineering background of inverse synthetic aperture radar (ISAR) imaging for hypervelocity space object, the problem of motion parameter estimation is put forward for radial velocity compensation. Based on sparse component analysis, an algorithm named BP (base pursuit) is proposed to resolve the problem in noise-free environment. For the noise suppression, a modified algorithm based on parameter regularization is introduced in this paper. Simulation results show that this method behaves well in signal de-noising and could get accurate estimation for motion parameter from signals corrupted by noise..","PeriodicalId":315133,"journal":{"name":"2008 International Conference on Microwave and Millimeter Wave Technology","volume":"11 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":"129997097","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
A design procedure for tunnel diode microwave oscillators 隧道二极管微波振荡器的设计程序
2008 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2008-04-21 DOI: 10.1109/ICMMT.2008.4540529
Liquan Wang, E. Wasige
{"title":"A design procedure for tunnel diode microwave oscillators","authors":"Liquan Wang, E. Wasige","doi":"10.1109/ICMMT.2008.4540529","DOIUrl":"https://doi.org/10.1109/ICMMT.2008.4540529","url":null,"abstract":"Negative differential resistance (NDR) devices such as Esaki tunnel diodes or resonant tunnelling diodes are ideal for the realisation of high frequency oscillators. However, the oscillation frequency cannot usually be predicted precisely and the output power is quite weak. In this paper, a tunnel diode oscillator topology to which the conventional negative resistance oscillator methodology can be employed is shown to yield predictable oscillation frequencies, delivering the maximum possible output power. Methods for DC and RF characterization of NDR devices are also described.","PeriodicalId":315133,"journal":{"name":"2008 International Conference on Microwave and Millimeter Wave Technology","volume":"57 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":"130232977","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: 12
The new fiber-optic stain sensor 新型光纤染色传感器
2008 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2008-04-21 DOI: 10.1109/ICMMT.2008.4540527
Li Yunjing, Wang Xueguang
{"title":"The new fiber-optic stain sensor","authors":"Li Yunjing, Wang Xueguang","doi":"10.1109/ICMMT.2008.4540527","DOIUrl":"https://doi.org/10.1109/ICMMT.2008.4540527","url":null,"abstract":"In this paper, we introduced a new fiber-optic strain sensor with white light interferometric principle based on Fabry-Perot, which is capable of providing measurement for the building strain. The signal processing of system is that the optical signal wavelength is modulated in the Fabry-Perot cavity and is demodulated during the optical-electricity transform. Compared with a common optical fiber strain sensor, it has more advantages, such as low cost, high stability, and high anti-interference. The resolution of the fiber-optic strain sensor is up to 1mu epsiv within the test range being plusmn 5000 mu epsiv .The fiber-optic strain sensor system made up of this fiber-optic strain sensor is put into use in many fields for monitoring in real time and intelligent evaluating.","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":"134137278","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
External Q computation by fuzzy inference method; Application to microstrip filter design 模糊推理法计算外部Q值;应用于微带滤波器的设计
2008 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2008-04-21 DOI: 10.1109/ICMMT.2008.4540570
P. Rezaee, N. N. Esfahani, M. Tayarani
{"title":"External Q computation by fuzzy inference method; Application to microstrip filter design","authors":"P. Rezaee, N. N. Esfahani, M. Tayarani","doi":"10.1109/ICMMT.2008.4540570","DOIUrl":"https://doi.org/10.1109/ICMMT.2008.4540570","url":null,"abstract":"Coupling factor of a resonator to an external circuit is described by the external Q which is an important parameter for designing microwave filters. Analytical computation of external Q needs exact determination of the field distribution around the coupling port. But the complexities of I/O ports in microwave/millimeter wave filters make this procedure a very complicated process. On the other hand lack of analytical solution for field distribution in some kinds of resonators such as square open loop resonators cause to increase the complexity of external Q computation. In this paper a very fast and accurate fuzzy inference method is implemented to overcome this drawback. The fuzzy modeling method is explained and a four pole Chebychev filter is designed as an example to show the accuracy and efficiency of the introduced method. The simulated response of the designed filter is compared with an ideal four pole Chebychev one. The results are in a very good agreement.","PeriodicalId":315133,"journal":{"name":"2008 International Conference on Microwave and Millimeter Wave Technology","volume":"61 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":"134250082","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
A wide stopband microstrip bandpass filter using defected ground structure 采用缺陷接地结构的宽阻带微带带通滤波器
2008 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2008-04-21 DOI: 10.1109/ICMMT.2008.4540390
Yong Zhang
{"title":"A wide stopband microstrip bandpass filter using defected ground structure","authors":"Yong Zhang","doi":"10.1109/ICMMT.2008.4540390","DOIUrl":"https://doi.org/10.1109/ICMMT.2008.4540390","url":null,"abstract":"Defected ground structure (DGS) has the characteristics of slow wave, wide stopband and compact size. A coupled-line bandpass microstrip filter with the central frequency of 12 GHz is designed by using computer-aided design (CAD) tools, and then, the DGS shape is proposed to optimize the stopband and to restrain the spurious passband. Thus, the stopband of the filter is wider than that of conventional coupled-line filter. The experimental results on a fabricated parallel coupled-line filter using DGS agree with the simulation results very well.","PeriodicalId":315133,"journal":{"name":"2008 International Conference on Microwave and Millimeter Wave Technology","volume":"11 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":"134437006","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: 8
The analysis of a new class of microstrip antennas based on the idea of cockroach antenna 基于蟑螂天线思想的一类新型微带天线的分析
2008 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2008-04-21 DOI: 10.1109/ICMMT.2008.4540336
H. Elkamchouchi, M. Mahmoud, T. EINozahy, I. Aly
{"title":"The analysis of a new class of microstrip antennas based on the idea of cockroach antenna","authors":"H. Elkamchouchi, M. Mahmoud, T. EINozahy, I. Aly","doi":"10.1109/ICMMT.2008.4540336","DOIUrl":"https://doi.org/10.1109/ICMMT.2008.4540336","url":null,"abstract":"Insects posses garden variety of traits, but for some who lack the ability of vision, their species would have been extinct long ago. Through ingenuity of creation, these species adapted to the environment by developing antennas where they can use the basic principles of wave-propagation to feel the surrounding objects. In this paper a new design for broadband microstrip antennas was investigated. The main aim is to make the patch like a cockroach antenna. The antenna has shown to yield percentage bandwidth about 120% for a substrate with permittivity of 4.5. For using air substrate the antenna was fabricated and the percentage bandwidth was 42%. Furthermore some modifications were made to increase the bandwidth of air substrate antennas until it successfully reached 114%.","PeriodicalId":315133,"journal":{"name":"2008 International Conference on Microwave and Millimeter Wave Technology","volume":"5 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":"134164379","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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