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The Simulation of Impedance-Frequency Characteristics for filter-loaded output circuit of klystrons by probe-technique 用探针技术模拟速调管负载滤波器输出电路的阻抗-频率特性
CSQRWC 2012 Pub Date : 2012-07-23 DOI: 10.1109/CSQRWC.2012.6294980
Jing Cao, Pu-kun Liu, Yao-gen Ding, Bin Shen, Dongping Gao
{"title":"The Simulation of Impedance-Frequency Characteristics for filter-loaded output circuit of klystrons by probe-technique","authors":"Jing Cao, Pu-kun Liu, Yao-gen Ding, Bin Shen, Dongping Gao","doi":"10.1109/CSQRWC.2012.6294980","DOIUrl":"https://doi.org/10.1109/CSQRWC.2012.6294980","url":null,"abstract":"The simulation of Impedance-Frequency Characteristics for filter-loaded output circuit by probe technique in Transient-solver, the swept frequency cold-test technique of filter-loaded output circuit, and their relationship as well, were theoretically analyzed in detail. The simulation method of shunt impedance in output circuit with filter by probe is obtained, which is validated in design by the point-by-point frequency cold-test, and more simple and intuitive than Zhao's method and transmission-method.","PeriodicalId":250360,"journal":{"name":"CSQRWC 2012","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126854204","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 of the influence of rain backscattering enhancement on MMW radar performance 雨水后向散射增强对毫米波雷达性能影响的研究
CSQRWC 2012 Pub Date : 2012-07-23 DOI: 10.1109/CSQRWC.2012.6294994
Yang Ruike, Z. Xiaobo, Liu Kexiang, Ma Huihui
{"title":"Study of the influence of rain backscattering enhancement on MMW radar performance","authors":"Yang Ruike, Z. Xiaobo, Liu Kexiang, Ma Huihui","doi":"10.1109/CSQRWC.2012.6294994","DOIUrl":"https://doi.org/10.1109/CSQRWC.2012.6294994","url":null,"abstract":"In this paper, the multiple scattering and backscattering enhancement theory is discussed. The multiple scattering and backscattering enhancement caused by rain is analyzed for 35 and 95GHz millimeter wave (MMW). The higher frequency, the more backscattering enhancement by rain is. The influence of the rain backscattering enhancement on MMW radar detection performance is studied. The results show that the signal to clutter ratio for MMW radar is evidently decreased and the clutter to noise ratio is increased considering the rain backscattering enhancement. The MMW radar detection performance can be degenerated severely due to the backscattering enhancement of rain.","PeriodicalId":250360,"journal":{"name":"CSQRWC 2012","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128505206","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
Accurate computation of input admittance of the antennas on the platform using the advanced delta-gap source model 利用先进的差隙源模型精确计算平台上天线的输入导纳
CSQRWC 2012 Pub Date : 2012-07-23 DOI: 10.1109/CSQRWC.2012.6295001
Tao Liu, Yanwen Zhao, Yu-teng Zheng, Miao-miao Jia
{"title":"Accurate computation of input admittance of the antennas on the platform using the advanced delta-gap source model","authors":"Tao Liu, Yanwen Zhao, Yu-teng Zheng, Miao-miao Jia","doi":"10.1109/CSQRWC.2012.6295001","DOIUrl":"https://doi.org/10.1109/CSQRWC.2012.6295001","url":null,"abstract":"The gap source model is extensively used in modeling monopole antennas in the method of moments (MOM), due to its simple expression form. But it is not accurate to calculate the input impedance then, the advanced delta-gap source model can solve this problem. Instead of using a shorted-circuited conductor to represent a zero-width exciting gap according to the conventional method, the approach is then set equal to the coaxial fed to estimate the fed position with respect to the working wavelength. Geometry Meshing and the accurate calculation of the impedance matrix elements are applied to the new model to improve the calculation precision. Numerical results are presented to show the high accuracy of the advanced delta-gap source model.","PeriodicalId":250360,"journal":{"name":"CSQRWC 2012","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127857094","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
The effect of mutual coupling on the self-impedance of linear microstrip array 相互耦合对线性微带阵列自阻抗的影响
CSQRWC 2012 Pub Date : 2012-07-23 DOI: 10.1109/CSQRWC.2012.6295008
Cheng-Nan Hu, E. Lee, Chao-Hsiang Liao, Wei-Yuan Huang, Kai-Hong Jheng
{"title":"The effect of mutual coupling on the self-impedance of linear microstrip array","authors":"Cheng-Nan Hu, E. Lee, Chao-Hsiang Liao, Wei-Yuan Huang, Kai-Hong Jheng","doi":"10.1109/CSQRWC.2012.6295008","DOIUrl":"https://doi.org/10.1109/CSQRWC.2012.6295008","url":null,"abstract":"It has been shown that the MIMO performance is strongly affected by the effects of mutual coupling between antenna elements. This study numerically and experimentally investigates the mutual coupling effects on the self-impedance of a five-element microstrip antenna array. Experimental validation shows the effectiveness of the numerical method using GEMS EM Simulator for the further analysis on the communication system performance.","PeriodicalId":250360,"journal":{"name":"CSQRWC 2012","volume":"221 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124385864","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
The study of the rf field in a plasma reactor 等离子体反应器中射频场的研究
CSQRWC 2012 Pub Date : 2012-07-23 DOI: 10.1109/CSQRWC.2012.6294987
R. Wu, Gao Ben-qing, Xue Zhenghui, L. Weiming
{"title":"The study of the rf field in a plasma reactor","authors":"R. Wu, Gao Ben-qing, Xue Zhenghui, L. Weiming","doi":"10.1109/CSQRWC.2012.6294987","DOIUrl":"https://doi.org/10.1109/CSQRWC.2012.6294987","url":null,"abstract":"Capacitively coupled plasma reactors are commonly used for plasma enhanced deposition or dry etching in semiconductor applications. The rf field driven at one single-frequency source in the plasma reactor is very important for the quality of finished semiconductor products, so how to generate an uniform rf field distribution is the key technology in applications. This paper discusses two techniques to improve the uniform characteristics of rf field, one is using more rf excitation sources and the other is using shaped rf electrodes. The paper also gives some simulation results analyzed by FDTD method, which proves the effectiveness of the technology.","PeriodicalId":250360,"journal":{"name":"CSQRWC 2012","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123314001","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
A novel wide-band patch antenna using differential-fed 一种新型的差分馈电宽带贴片天线
CSQRWC 2012 Pub Date : 2012-07-23 DOI: 10.1109/CSQRWC.2012.6295003
K. Wang, Li Gao, H. Lai, K. So, H. Wong, Q. Xue, Xiu Yin Zhang
{"title":"A novel wide-band patch antenna using differential-fed","authors":"K. Wang, Li Gao, H. Lai, K. So, H. Wong, Q. Xue, Xiu Yin Zhang","doi":"10.1109/CSQRWC.2012.6295003","DOIUrl":"https://doi.org/10.1109/CSQRWC.2012.6295003","url":null,"abstract":"A novel differential-fed patch antenna (DFPA) is proposed in this letter. Based on a capacitance coupling feed, an impedance bandwidth (SWR2) of 102% has been obtained. The cross-polarization is less than -15dB across the operating bandwidth because of the differential-fed.","PeriodicalId":250360,"journal":{"name":"CSQRWC 2012","volume":"139 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122682952","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
An energy-efficient routing algorithm for data gathering in wireless sensor networks 一种无线传感器网络数据采集的节能路由算法
CSQRWC 2012 Pub Date : 2012-07-23 DOI: 10.1109/CSQRWC.2012.6294959
Bo Chang, Xinrong Zhang
{"title":"An energy-efficient routing algorithm for data gathering in wireless sensor networks","authors":"Bo Chang, Xinrong Zhang","doi":"10.1109/CSQRWC.2012.6294959","DOIUrl":"https://doi.org/10.1109/CSQRWC.2012.6294959","url":null,"abstract":"Data gathering is a basic function in wireless sensor networks (WSNs). With the energy constrained nature of the wireless sensor nodes, energy-efficient routing algorithms need to be carefully designed before wireless sensor networks are widely deployed for data gathering. This article proposed an energy-efficient cluster routing algorithm (ECRA) for data gathering in wireless sensor networks. Firstly, ECRA divided the nodes in WSNs into clusters. Secondly, a chain was formed in each by an improved nearest neighbor algorithm. Finally, the multi-hop was used to transmit the gathered data from clusterhead to the base station. The simulation results show that the proposed approach can distribute energy consumption uniformly among the sensor nodes, and thus prolong the network lifetime.","PeriodicalId":250360,"journal":{"name":"CSQRWC 2012","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134647454","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
An authenticated encryption scheme for automatic dependent surveillance-broadcast data link 一种自动相关监视-广播数据链路的认证加密方案
CSQRWC 2012 Pub Date : 2012-07-23 DOI: 10.1109/CSQRWC.2012.6294960
Tso-Cho Chen
{"title":"An authenticated encryption scheme for automatic dependent surveillance-broadcast data link","authors":"Tso-Cho Chen","doi":"10.1109/CSQRWC.2012.6294960","DOIUrl":"https://doi.org/10.1109/CSQRWC.2012.6294960","url":null,"abstract":"To meet future demand for air transport growth, break the traditional ground navigation aids facilities limitations and effectively enhance flight safety and efficiency, a new generation of air surveillance system will use automatic dependent surveillance-broadcast (ADS-B) system. However, ADS-B data link is a wireless broadcast-type link which is without designed-in security measures. Therefore potential security vulnerabilities and threats remain to be assessed and resolved. This paper aims to assess security of the ADS-B data link, and build encryption and authentication capability on the ADS-B data link to provide privacy and integrity of broadcast information. In the paper, a data link authenticated encryption (DLAE) scheme is designed for simultaneously protecting both message's privacy and its authenticity. Traditionally, these two security goals had been handled separately by means of encryption schemes and message authentication codes. The proposed DLAE can increase significantly the processing speed in comparison with the traditional design methods.","PeriodicalId":250360,"journal":{"name":"CSQRWC 2012","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114307698","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
Experimental research on degenerated four wave mixing in photonic crystal fibers 光子晶体光纤中简并四波混频的实验研究
CSQRWC 2012 Pub Date : 2012-07-23 DOI: 10.1109/CSQRWC.2012.6294964
Wenping Ge, H Zhao, Juan Chen
{"title":"Experimental research on degenerated four wave mixing in photonic crystal fibers","authors":"Wenping Ge, H Zhao, Juan Chen","doi":"10.1109/CSQRWC.2012.6294964","DOIUrl":"https://doi.org/10.1109/CSQRWC.2012.6294964","url":null,"abstract":"We investigated the continuous wave degenerated FWM characteristic of SMF28 and PCF and measured the efficiency of the newly created frequency with respect to wavelength difference between pump and signal waves, and the FWM conversion polarization dependence on pump and signal light. The dispersion, dispersion slope and nonlinear coefficient of the fiber were determined.","PeriodicalId":250360,"journal":{"name":"CSQRWC 2012","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121602320","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
An 11/19-GHz VCO using switchable transformer in 0.18-µm CMOS 采用0.18µm CMOS的可开关变压器的11/19 ghz压控振荡器
CSQRWC 2012 Pub Date : 2012-07-23 DOI: 10.1109/CSQRWC.2012.6294977
Jie-Ying Zhong, Sen Wang
{"title":"An 11/19-GHz VCO using switchable transformer in 0.18-µm CMOS","authors":"Jie-Ying Zhong, Sen Wang","doi":"10.1109/CSQRWC.2012.6294977","DOIUrl":"https://doi.org/10.1109/CSQRWC.2012.6294977","url":null,"abstract":"This paper presents a novel switchable transformer to enhance the quality factors, to reduce the chip area, and to increase the inductance tuning range. The proposed switchable transformer is applied to an LC-tank of a VCO which is designed with two wide oscillating frequency bands. By controlling the switches of the transformer, the dual-band VCO verified in a 0.18-μm CMOS can operate at two wide bands. The post-simulation phase noises are -101 dBc/Hz and -90 dBc/Hz at 1 MHz offset at 11 GHz and 19 GHz, respectively. Moreover, the tuning range is 13% at 11 GHz and 6% at 19GHz. The chip area is merely 0.3mm2.","PeriodicalId":250360,"journal":{"name":"CSQRWC 2012","volume":"305 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122117562","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
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