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Transient analysis of radiation for high gain and directivity antennas 高增益和指向性天线的瞬态辐射分析
CSQRWC 2012 Pub Date : 2012-07-23 DOI: 10.1109/CSQRWC.2012.6294979
S. Tuan, H. Chou
{"title":"Transient analysis of radiation for high gain and directivity antennas","authors":"S. Tuan, H. Chou","doi":"10.1109/CSQRWC.2012.6294979","DOIUrl":"https://doi.org/10.1109/CSQRWC.2012.6294979","url":null,"abstract":"The time domain analysis of scattering field for high gain and directivity antennas are presented in this paper. A time domain (TD) transient analysis of the electromagnetic (EM) fields scattered from a perfectly conducting parabolic reflector antenna when it is illuminated by impulsive plane wave and general astigmatic Gaussian Beam (GB) fields, then elliptical reflector antenna illuminated by impulsive plane wave. The potential applications of near-field antennas continue to grow dramatically and desire more exploration in the near future. Phased array antennas for near field focusing radiation are also presented in this paper.","PeriodicalId":250360,"journal":{"name":"CSQRWC 2012","volume":"19 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":"134145516","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
Analysis of three kinds of quick startup tests on an S-band Klystron s波段速调管三种快速启动试验分析
CSQRWC 2012 Pub Date : 2012-07-23 DOI: 10.1109/CSQRWC.2012.6294982
Baoli Shen, Yunping Huang, Zhaochuan Zhang
{"title":"Analysis of three kinds of quick startup tests on an S-band Klystron","authors":"Baoli Shen, Yunping Huang, Zhaochuan Zhang","doi":"10.1109/CSQRWC.2012.6294982","DOIUrl":"https://doi.org/10.1109/CSQRWC.2012.6294982","url":null,"abstract":"Three different kinds of 4 min quick startup tests on an S-band klystron are performed in order to find out the beam emission and output power performance of the klystron In the first 4mins, the current of the heater is set to different values, and at the 5th minute the klystron starts up. The results show that the klystron can work steadily, and from the 5th to the 15th minute the beam average current and the output power are slowly increased, but less than the full values It's concluded that the 4mins quick startup can satisfy the demand for an emergency of the klystron, but it isn't used often because of the decrease of the cathode's lifetime.","PeriodicalId":250360,"journal":{"name":"CSQRWC 2012","volume":"70 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":"132769140","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
Chair's message 椅子上的信息
CSQRWC 2012 Pub Date : 2012-07-23 DOI: 10.1109/CSQRWC.2012.6295012
Dau-Chyrh Chang
{"title":"Chair's message","authors":"Dau-Chyrh Chang","doi":"10.1109/CSQRWC.2012.6295012","DOIUrl":"https://doi.org/10.1109/CSQRWC.2012.6295012","url":null,"abstract":"As an annual conference, CSQRWC offers and active forum for exchanging creative ideas and experiences of the latest developments, designs in the areas of Radio Science and Wireless Technology for professors, researchers, engineers and students from Cross Strait Quad-Region of China and all over the world. The CSQRWC in 2012 in hosted by Communication Research Center, Oriental Institute of Technology.","PeriodicalId":250360,"journal":{"name":"CSQRWC 2012","volume":"30 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":"122302813","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
Particle Swarm Optimization of frequency selective surface 频率选择曲面的粒子群优化
CSQRWC 2012 Pub Date : 2012-07-23 DOI: 10.1109/CSQRWC.2012.6294988
Bo Zhang, Z. Xue, Weiming Li, W. Ren, Xinqing Sheng
{"title":"Particle Swarm Optimization of frequency selective surface","authors":"Bo Zhang, Z. Xue, Weiming Li, W. Ren, Xinqing Sheng","doi":"10.1109/CSQRWC.2012.6294988","DOIUrl":"https://doi.org/10.1109/CSQRWC.2012.6294988","url":null,"abstract":"Particle Swarm Optimization (PSO) has been successfully applied in the design and optimization of electromagnetic structures. Combined with FDTD technique, PSO is applied in the design of frequency selective surfaces. Together with the GPU acceleration, the FDTD program runs about 100 times faster while preserves the broad-band nature of the algorithm. Standard PSO and binary PSO are applied to deal with known cell structure and unknown cell structure optimization respectively. The entire optimization scheme is verified by the numerical results.","PeriodicalId":250360,"journal":{"name":"CSQRWC 2012","volume":"61 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":"124652151","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
Research of Multi-mode Noise suppression based on variable step-size NLMS-Newton algorithm 基于变步长NLMS-Newton算法的多模噪声抑制研究
CSQRWC 2012 Pub Date : 2012-07-23 DOI: 10.1109/CSQRWC.2012.6294991
S. Dalabaev, Chang Liao, A. Muhammad, B. Ahmetov
{"title":"Research of Multi-mode Noise suppression based on variable step-size NLMS-Newton algorithm","authors":"S. Dalabaev, Chang Liao, A. Muhammad, B. Ahmetov","doi":"10.1109/CSQRWC.2012.6294991","DOIUrl":"https://doi.org/10.1109/CSQRWC.2012.6294991","url":null,"abstract":"In reality, there are Multi-mode Noise (as a whole, they are non-Gaussian noise), it causes serious damage and loss to the signals. Traditional LMS algorithm can not suppress the noise well, not only slowing down the convergence, but also occurring a big steady-state error and the offset amount. This paper combined with the advantages of LMS algorithm and the Newton algorithm, to propose the amendment of autocorrelation matrix and take variable step-size which changes by the SNR. Simulation results show that the proposed algorithm in this paper has greatly improved in convergence rate, steady state error and the offset amount. It also can well suppress multi-mode noise to take useful signal.","PeriodicalId":250360,"journal":{"name":"CSQRWC 2012","volume":"1 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":"129080094","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
Design and implementation of a wireless power transmission system with green energy concept 基于绿色能源理念的无线电力传输系统设计与实现
CSQRWC 2012 Pub Date : 2012-07-23 DOI: 10.1109/CSQRWC.2012.6294965
M. Her, Pao-Hsun Wu, Wenhai Huang, Yu‐Lin Wang, Shih-Hao Kung
{"title":"Design and implementation of a wireless power transmission system with green energy concept","authors":"M. Her, Pao-Hsun Wu, Wenhai Huang, Yu‐Lin Wang, Shih-Hao Kung","doi":"10.1109/CSQRWC.2012.6294965","DOIUrl":"https://doi.org/10.1109/CSQRWC.2012.6294965","url":null,"abstract":"With current trend of international environmental protection standard, the features and perspective of development in communication system is wireless power transmission and green energy. This paper provides a smart wireless charging device which can charge different types of hand-held devices and power down to sleep mode to save power when charging process is completed.","PeriodicalId":250360,"journal":{"name":"CSQRWC 2012","volume":"32 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":"129508623","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 circularly polarized curved surface array antenna with high gain 一种高增益圆极化曲面阵列天线
CSQRWC 2012 Pub Date : 2012-07-23 DOI: 10.1109/CSQRWC.2012.6295004
S. Deng, Ching‐Long Tsai, S. Bor, Wei-Chung Tseng, Chih-Chiang Chen
{"title":"A circularly polarized curved surface array antenna with high gain","authors":"S. Deng, Ching‐Long Tsai, S. Bor, Wei-Chung Tseng, Chih-Chiang Chen","doi":"10.1109/CSQRWC.2012.6295004","DOIUrl":"https://doi.org/10.1109/CSQRWC.2012.6295004","url":null,"abstract":"A circularly polarized curved surface array antenna with high gain is presented. The array, which can perform circular polarization operation, is constructed on a cured plane. The measured 10dB return loss (RL) bandwidth is 15 % (5.25 to 6.1 GHz), and the measured 3dB AR bandwidth is 53% (5.4 to 8.4 GHz). Not only does the proposed antenna feature broadband operation, but it also possesses high-gain characteristic. The antenna gain is significantly enhanced to 20 dBic by the introducing of the multiple array.","PeriodicalId":250360,"journal":{"name":"CSQRWC 2012","volume":"16 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":"122577810","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
Compact UWB bandpass filter using localized substrate integrated artificial dielectric (L-SIAD) 基于局域衬底集成人工介电介质(L-SIAD)的紧凑型UWB带通滤波器
CSQRWC 2012 Pub Date : 2012-07-23 DOI: 10.1109/CSQRWC.2012.6294963
Xiaoke Wang, Cheng Wang, Wanchun Tang
{"title":"Compact UWB bandpass filter using localized substrate integrated artificial dielectric (L-SIAD)","authors":"Xiaoke Wang, Cheng Wang, Wanchun Tang","doi":"10.1109/CSQRWC.2012.6294963","DOIUrl":"https://doi.org/10.1109/CSQRWC.2012.6294963","url":null,"abstract":"In this paper, a multiple-mode resonator (MMR) using localized substrate integrated artificial dielectric (L-SIAD) is proposed to construct a compact ultra-wideband (UWB) bandpass filter (BPF). Due to the electromagnetic bandgap (EBG) property of L-SIAD, this MMR provides a broad upper stopband for the BPF. Meanwhile, broadside coupled-lines are used to provide tight coupling and sharp skirt for the BPF by the coupling transmission zero. Finally, such a UWB BPF is designed and fabricated. The measured results demonstrated that this filter has broad upper stopband, sharp rejection skirt, and low insertion loss in passband with flat group delay.","PeriodicalId":250360,"journal":{"name":"CSQRWC 2012","volume":"146 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":"122736775","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
Development of C-band CW broadband klystron c波段连续波宽带速调管的研制
CSQRWC 2012 Pub Date : 2012-07-23 DOI: 10.1109/CSQRWC.2012.6294981
Bin Shen, Jing Cao, Hong-hong Gu, Caiying Wang
{"title":"Development of C-band CW broadband klystron","authors":"Bin Shen, Jing Cao, Hong-hong Gu, Caiying Wang","doi":"10.1109/CSQRWC.2012.6294981","DOIUrl":"https://doi.org/10.1109/CSQRWC.2012.6294981","url":null,"abstract":"The design of the electron optics system, RF interaction section and broadband output coupling systems of the klystron will be described in this paper.","PeriodicalId":250360,"journal":{"name":"CSQRWC 2012","volume":"68 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":"121787622","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
Integral equation based on domain decomposition method for PEC body of translation 基于区域分解法的PEC平移体积分方程
CSQRWC 2012 Pub Date : 2012-07-23 DOI: 10.1109/CSQRWC.2012.6294969
Jiang Ming, Jun Hu, R. Zhao, Z. Nie
{"title":"Integral equation based on domain decomposition method for PEC body of translation","authors":"Jiang Ming, Jun Hu, R. Zhao, Z. Nie","doi":"10.1109/CSQRWC.2012.6294969","DOIUrl":"https://doi.org/10.1109/CSQRWC.2012.6294969","url":null,"abstract":"In this paper, a hybrid scheme named IE-DDMMLFMA with forward-backward method is proposed to calculate the scattering from the perfect electric conductor body of translation. The computational body of translation can be partitioned into concentric non-overlapping subdomains. Each of integral equation systems are solved separately, thus reducing the complexity of the original problem. Moreover, by applying two sets of MLFMA grids, a more efficient matrix-vector multiplication is implemented because of the translation invariant feature of each subdomain. The main advantage offered by this technique is a reduction in memory requirements. For the solution of the resulting linear systems we describe appropriate iterative solution strategies using generalized forward-backward method. At the same time, the iterative procedure for each subdomain is accelerated by block-diagonal pre-conditioner and OpenMP techniques. Various numerical examples are presented that illustrate its potential.","PeriodicalId":250360,"journal":{"name":"CSQRWC 2012","volume":"43 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":"126776784","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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