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

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Dualband frequency selective surface with double-four-legged loaded slots elements 双频选择表面与双四足加载槽元件
2008 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2008-04-21 DOI: 10.1109/ICMMT.2008.4540367
Chao Guo, Houjun Sun, Xin Lu
{"title":"Dualband frequency selective surface with double-four-legged loaded slots elements","authors":"Chao Guo, Houjun Sun, Xin Lu","doi":"10.1109/ICMMT.2008.4540367","DOIUrl":"https://doi.org/10.1109/ICMMT.2008.4540367","url":null,"abstract":"A design is presented for a dualband frequency selective surface (FSS) with double-four-legged loaded slots elements(DFLLSs). The four-legged loaded slots elements are first applied to design a dualband spatial bandpass filter. This type of FSS is constructed using two periodically different size four-legged loaded elements that have geometrical self similarity. And two dielectric slabs are added to each side of the single slotted surface. Its frequency performance is obtained by using numerical simulation software HFSS based on finite-element method (FEM). The simulated results show the good stability of the resonant frequency and bandwidth at different polarisation states and various incident angles.","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":"127191339","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
Microstrip bandpass filters using asymmetrical tapered-line resonators for improved stopband characteristics 微带带通滤波器采用非对称锥形线谐振器改善阻带特性
2008 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2008-04-21 DOI: 10.1109/ICMMT.2008.4540285
A. Namsang, P. Akkaraekthalin
{"title":"Microstrip bandpass filters using asymmetrical tapered-line resonators for improved stopband characteristics","authors":"A. Namsang, P. Akkaraekthalin","doi":"10.1109/ICMMT.2008.4540285","DOIUrl":"https://doi.org/10.1109/ICMMT.2008.4540285","url":null,"abstract":"This paper proposes new microstrip bandpass Alters using modified linear tapered-line resonators (LTR) which are asymmetrical structures for improving stopband performances. The design concept is based on step impedance resonator by adjusting width on one side of the linear tapered-line resonator to be asymmetrical structure. These filters provide wider upper stopbands resulting from resonator bandstop characteristics. The simulated and experimental results of stopband performances are better than 15 dB for a frequency range up to 5f0.","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":"124812985","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
Application of perturbed multiresolution preconditioner technique combined with MLFMA for scattering problem 微扰多分辨率预处理技术与MLFMA相结合在散射问题中的应用
2008 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2008-04-21 DOI: 10.1109/ICMMT.2008.4540572
J. Ding, J. Zhu, D. Ding, R. Chen, D.X. Wang, E. Yung
{"title":"Application of perturbed multiresolution preconditioner technique combined with MLFMA for scattering problem","authors":"J. Ding, J. Zhu, D. Ding, R. Chen, D.X. Wang, E. Yung","doi":"10.1109/ICMMT.2008.4540572","DOIUrl":"https://doi.org/10.1109/ICMMT.2008.4540572","url":null,"abstract":"A new multiresolution (MR) preconditioner is presented in this paper, and it is combined with the multilevel fast multipole algorithm (MLFMA) for the analysis of electromagnetic scatters; Furthermore, the MR preconditioner is modified to be more effective by including a perturbation which is constructed from the principle value term of the magnetic field integral equation (MFIE) operator for solving the electric field integral equation (EFIE), and the modified MR preconditioner is named perturbed MR preconditioner. The MR preconditioner is a physics-based preconditioning scheme for the Method-of- Moments (MoM) methods, which is derives from the generation of a MR basis. And the MR basis functions are constructed as linear combinations of Rao-Wilton-Glisson (RWG) basis functions. Unlike other preconditioners, the perturbed MR preconditioner requires a low memory occupation and computational cost for its generation and application. The use of the perturbed MR preconditioner combined with the MLFMA can speeds up the convergence rate of the iterative solvers effectively.","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":"125008027","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
Study and design on automatic gain control circuit for WCDMA repeater uplink system WCDMA中继器上行系统自动增益控制电路的研究与设计
2008 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2008-04-21 DOI: 10.1109/ICMMT.2008.4540877
Zhang Dan, Liu Yuan-an, Ji Haiying, Li Shulan, Tang Bihua
{"title":"Study and design on automatic gain control circuit for WCDMA repeater uplink system","authors":"Zhang Dan, Liu Yuan-an, Ji Haiying, Li Shulan, Tang Bihua","doi":"10.1109/ICMMT.2008.4540877","DOIUrl":"https://doi.org/10.1109/ICMMT.2008.4540877","url":null,"abstract":"In order to communicate successfully for mobile stations in signal dead zone, this paper presents an inverse-gain- feedback dual-loop automatic gain control (AGC) circuit used in WCDMA repeater uplink system. The repeater employs two stages radio frequency AGC circuits, which are gain control of input part and output part respectively, so that the system can work normally and automatically control the output power. Agilent advanced design system (ADS) is used as a simulation tool to analyze the performance. The results show that it is performed well, which has the characteristic of good frequency selectivity and channel selectivity, steady controllable output, large range of AGC gain and wide range of output power. Therefore, the proposed system is suitable to solve the problem of the dead zone in WCDMA communication.","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":"125741073","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
Photonic generation of millimeter-wave-band 16-QAM and 16-ASK signals based on orthogonal polarization multiplexing 基于正交偏振复用的毫米波16-QAM和16-ASK信号的光子产生
2008 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2008-04-21 DOI: 10.1109/ICMMT.2008.4540827
Ye Zhang, Kun Xu, Jianqiang Li, Hao Huang, Jian Wu, X. Hong, Jintong Lin
{"title":"Photonic generation of millimeter-wave-band 16-QAM and 16-ASK signals based on orthogonal polarization multiplexing","authors":"Ye Zhang, Kun Xu, Jianqiang Li, Hao Huang, Jian Wu, X. Hong, Jintong Lin","doi":"10.1109/ICMMT.2008.4540827","DOIUrl":"https://doi.org/10.1109/ICMMT.2008.4540827","url":null,"abstract":"Two novel schemes are proposed to generate 16-ary square quadrature amplitude modulation (16-QAM) signal and 16-ary amplitude shift keying (16-ASK) at millimeter-wave (mm- wave) band. The proposed schemes principally consist of three Mach-Zehnder modulators (MZMs) and a polarization splitter (PBS). The detailed theoretical analysis and simulation results are given out. Compared with the conventional methods, the electronic circuits are simplified in our proposed schemes by employing photonic vector modulator (PVM) in which only one single-wavelength laser and one high speed MZM are needed.","PeriodicalId":315133,"journal":{"name":"2008 International Conference on Microwave and Millimeter Wave Technology","volume":"16 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":"125624591","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
The design of EMI and EMC based on optical burst- module PCB 基于光突发模块PCB的电磁干扰和电磁兼容设计
2008 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2008-04-21 DOI: 10.1109/ICMMT.2008.4540434
A. Yin, Li Li, Xinliang Zhang, Qingmiao Zhang, Aiyun Zhan
{"title":"The design of EMI and EMC based on optical burst- module PCB","authors":"A. Yin, Li Li, Xinliang Zhang, Qingmiao Zhang, Aiyun Zhan","doi":"10.1109/ICMMT.2008.4540434","DOIUrl":"https://doi.org/10.1109/ICMMT.2008.4540434","url":null,"abstract":"Rapid development of semiconductor technology, high demand on the high-quality real-time processing, all these have led to growing popularity of the application of high-speed PCB.","PeriodicalId":315133,"journal":{"name":"2008 International Conference on Microwave and Millimeter Wave Technology","volume":"42 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":"126951668","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
Exposure reduction of S-band radar’s staff by designing a frequency selective surface 通过设计频率选择表面减少s波段雷达工作人员的暴露
2008 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2008-04-21 DOI: 10.1109/ICMMT.2008.4540297
M. Hosseinipanah, Qun Wu
{"title":"Exposure reduction of S-band radar’s staff by designing a frequency selective surface","authors":"M. Hosseinipanah, Qun Wu","doi":"10.1109/ICMMT.2008.4540297","DOIUrl":"https://doi.org/10.1109/ICMMT.2008.4540297","url":null,"abstract":"In this paper we propose an effective method to protect the staff of S-band radars against microwave radiation. A broadband frequency selective surface (FSS) applies to indoor radar environments to reduce the strength of scattered and reflected electromagnetic fields. This FSS has shown proper bandstop characteristics for 3.3 GHz signals while allows 950 MHz mobile phone, television and radio signals to pass through almost without attenuation. Simulations have been carried out by CST microwave studio at different frequencies in order to verify the frequency selectivity of FSS. The incidence waves were applied in different angle to confirm the ability of this structure to remove scattering waves. The FSS is modeled by equivalent circuit in its operational frequency range as a bandstop filter.","PeriodicalId":315133,"journal":{"name":"2008 International Conference on Microwave and Millimeter Wave Technology","volume":"15 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":"114919293","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
Application of CST time domain algorithm in the electromagnetic simulation standard of the SAR for mobile phone CST时域算法在手机SAR电磁仿真标准中的应用
2008 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2008-04-21 DOI: 10.1109/ICMMT.2008.4540803
Nan Qi, M. Zhang, T. Wittig, A. Prokop
{"title":"Application of CST time domain algorithm in the electromagnetic simulation standard of the SAR for mobile phone","authors":"Nan Qi, M. Zhang, T. Wittig, A. Prokop","doi":"10.1109/ICMMT.2008.4540803","DOIUrl":"https://doi.org/10.1109/ICMMT.2008.4540803","url":null,"abstract":"SAR is one of the important reference values in evaluation of electromagnetic radiation from mobile phones. The purpose of this paper is to present the SAR simulation results of a mobile phone, SAM head, and hand with the CST MICROWAVE STUDIOreg time-domain solver. Various IEEE SAR standards are introduced.","PeriodicalId":315133,"journal":{"name":"2008 International Conference on Microwave and Millimeter Wave Technology","volume":"173 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":"115176033","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
Effects of an electrically large rotation ellipsoid radome on the radiation characteristics of two kinds of antennas 电大旋转椭球天线罩对两种天线辐射特性的影响
2008 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2008-04-21 DOI: 10.1109/ICMMT.2008.4540672
Bing Hu, Xiaowen Xu, M. He, Ying Zheng
{"title":"Effects of an electrically large rotation ellipsoid radome on the radiation characteristics of two kinds of antennas","authors":"Bing Hu, Xiaowen Xu, M. He, Ying Zheng","doi":"10.1109/ICMMT.2008.4540672","DOIUrl":"https://doi.org/10.1109/ICMMT.2008.4540672","url":null,"abstract":"The effects of the electrically large rotation ellipsoid radome on the radiation characteristics of two kinds of wire antennas are analyzed by an improved hybrid method, which combines the method of moments (MOM) and physical optics (PO). Based on a group of associated integral equations, the mutual interactions among the antenna, the inner and outer surfaces of the radome are all considered. In the analysis, the antenna surface and the sharp tip part on the radome surface are modeled accurately by using MOM, while the smooth parts on the radome surfaces approximated by using PO method. Numerical results indicate that the radome parameters can affect the antenna radiation characteristics seriously.","PeriodicalId":315133,"journal":{"name":"2008 International Conference on Microwave and Millimeter Wave Technology","volume":"32 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":"115177661","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
Analyzing periodic arrays with the mutual admittance and spectral approaches 用互导纳和谱法分析周期阵列
2008 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2008-04-21 DOI: 10.1109/ICMMT.2008.4540492
Zhuo Yang, Weiming Li, Z. Xue, X. Lv, W. Ren
{"title":"Analyzing periodic arrays with the mutual admittance and spectral approaches","authors":"Zhuo Yang, Weiming Li, Z. Xue, X. Lv, W. Ren","doi":"10.1109/ICMMT.2008.4540492","DOIUrl":"https://doi.org/10.1109/ICMMT.2008.4540492","url":null,"abstract":"In this paper frequency selective surface (FSS) is analyzed by a method. It is the mixture of the mutual impedance approach and the spectral approach. To evaluate the transmission coefficient educed from this method, we need to apply the numerical algorithm. This paper adopts the method of moments to evaluate it. Compared with other ways, this technique spends less computing time and calculates more precisely. Moreover, it can analyze multilayer FSS which has various periodic surfaces sandwiched between arbitrary dielectric slabs.","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":"115515475","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
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