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Comparative analysis on the fast rising edge pulse source with two kinds of avalanche transistor 两种雪崩晶体管快速上升沿脉冲源的对比分析
2013 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference Pub Date : 2013-07-21 DOI: 10.1109/CSQRWC.2013.6657451
Qingxi Yang, Zhou Xing, Qing-guo Wang, Zhao Min
{"title":"Comparative analysis on the fast rising edge pulse source with two kinds of avalanche transistor","authors":"Qingxi Yang, Zhou Xing, Qing-guo Wang, Zhao Min","doi":"10.1109/CSQRWC.2013.6657451","DOIUrl":"https://doi.org/10.1109/CSQRWC.2013.6657451","url":null,"abstract":"A fast rising edge pulse can be generated by Marx circuit based on avalanche transistors. The avalanche principle of a Marx circuit is analysed. and the triggering circuit and ten stages Marx circuit board are designed. A series of negative pulses with falling edge time about 2ns,voltage amplitude from about 700V to 1600V and pulse width below 6ns are obtained when the Marx circuit is ten stages based on the FMMT415 and FMMT417 by changing the charging voltage and the capacity. The pulse waveforms based two kinds of avalanche transistors are compared. The results are that a higher peak pulse can be get based on the FMMT417 than the FMMT415, the peak value will be lager when the charging voltage is higher, and pulse-width will be lager when the capacities are bigger within a certain limit.","PeriodicalId":355180,"journal":{"name":"2013 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125745186","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: 6
An insert-fed Ku-band microstrip antenna array for DBS application 用于DBS应用的插入馈电ku波段微带天线阵列
2013 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference Pub Date : 2013-07-21 DOI: 10.1109/CSQRWC.2013.6657386
Hui Zhang, Zeng Li, Junhong Wang, Xueqin Zhang, Yaoqing Yang
{"title":"An insert-fed Ku-band microstrip antenna array for DBS application","authors":"Hui Zhang, Zeng Li, Junhong Wang, Xueqin Zhang, Yaoqing Yang","doi":"10.1109/CSQRWC.2013.6657386","DOIUrl":"https://doi.org/10.1109/CSQRWC.2013.6657386","url":null,"abstract":"This paper presents the design and implementation of a novel Ku -band microstrip antenna array with an insert feeding network for direct broadcast satellite (DBS) application. The proposed antenna array features fewer elements, lower profile, and better performance than existing designs. The insert microstrip feeding network makes it convenient to adjust input impedance of the array. The optimal structure of the antenna array was determined by investigating the effect of antenna structure parameters on return loss of the array. The antenna array with optimal structure dimension was fabricated and measured. Both simulation and measurement results show that the operating frequency bandwidth of the antenna array for |S11| >10 dB covers a wider bandwidth of 11.4 GHz - 12.8GHz. Far field measurements in the E and H planes show that the proposed design can achieve the desired radiation patterns.","PeriodicalId":355180,"journal":{"name":"2013 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126730558","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: 3
Design of a passive self-interference cancellation network with high cancellation ratio 高对消比无源自干扰对消网络的设计
2013 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference Pub Date : 2013-07-21 DOI: 10.1109/CSQRWC.2013.6657345
Jinxin Li, Shiwen Yang, Z. Nie
{"title":"Design of a passive self-interference cancellation network with high cancellation ratio","authors":"Jinxin Li, Shiwen Yang, Z. Nie","doi":"10.1109/CSQRWC.2013.6657345","DOIUrl":"https://doi.org/10.1109/CSQRWC.2013.6657345","url":null,"abstract":"A passive self-interference cancellation network (SICN) is proposed in this paper. The network is composed of three directional couplers and microstrip delay lines. By adjusting the coupling factor of the two parallel coupled line directional couplers and the length of the delay lines, the proposed SICN is able to produce an optimized reference signal with approximate equal amplitude and 180° phase difference to the self-interference signal (SIS), and the cancellation of SIS is thus achieved. Numerical simulation results of the proposed network shows a better reflection coefficient level less than -23 dB over the LTE band of 2.5GHz - 2.57GHz. The cancellation ratio is more than 12dB, while the insertion loss of receive channel is about 0.12dB. Another numerical example for the band of 2.62GHz - 2.69GHz is also simulated and discussed. Details of the proposed cancellation network designs are described and the simulated results are presented and discussed.","PeriodicalId":355180,"journal":{"name":"2013 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference","volume":"138 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133898009","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 design of layered luneberg lens with radially-drilled-hole-structure 径向钻孔结构层状luneberg透镜的设计
2013 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference Pub Date : 2013-07-21 DOI: 10.1109/CSQRWC.2013.6657394
Xiaofeng He, Shiwen Yang, Long Yuan, Z. Nie
{"title":"The design of layered luneberg lens with radially-drilled-hole-structure","authors":"Xiaofeng He, Shiwen Yang, Long Yuan, Z. Nie","doi":"10.1109/CSQRWC.2013.6657394","DOIUrl":"https://doi.org/10.1109/CSQRWC.2013.6657394","url":null,"abstract":"In this paper, a novel design method for layered concentric Luneberg lens with radially drilled holes in the low loss dielectrics is presented, based on the effective medium theories (EMT's). The radially-drilled-holes structure of the effective dielectric is illustrated and the formulas for calculating the dielectric constant are also presented. Base on the design method, a 30cm two-layered luneberg lens, operating at Ku/K band, is then designed, and a hemisphere lens with reflective ground plane is also taken into account in the design to reduce the profile height and the weight of the antenna. Simulated results are then presented. The gain/efficiency of the antenna is 31.0dBi/81.6% and 34.5dBi/67.9% at 12.5G and 20.45G respectively. It is shown that the lens made from this effective material with radially-drilled-hole structure has the advantage of low loss and isotropy as compared to those made from the traditional foamed dielectric.","PeriodicalId":355180,"journal":{"name":"2013 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129359166","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 hybrid belief propagation decoding algorithms of LDPC codes for fast convergence 一种LDPC码快速收敛的混合信念传播译码算法
2013 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference Pub Date : 2013-07-21 DOI: 10.1109/CSQRWC.2013.6657436
Tso-Cho Chen, Chia-Jung Li, E. Lu
{"title":"A hybrid belief propagation decoding algorithms of LDPC codes for fast convergence","authors":"Tso-Cho Chen, Chia-Jung Li, E. Lu","doi":"10.1109/CSQRWC.2013.6657436","DOIUrl":"https://doi.org/10.1109/CSQRWC.2013.6657436","url":null,"abstract":"A hybrid belief propagation (BP) decoding algorithm for low-density parity-check code is proposed to accelerate the convergence of decoding and reduce the number of decoding iterations. The hybrid scheme is presented by integrating the BP algorithm with the bit-flipping function which is used as adaptive weighted factor in the BP iteration decoding. The adaptive weighting factor is based on the average weighted reliability measure of the hard output of decoder. The proposed hybrid adaptive weighted iteration scheme can efficiently increase the convergence speed of the belief propagation decoding and therefore improve the error performance. Simulation results show that the proposed algorithm can significantly reduce the decoding complexity and achieve better error performances as compared with the sum-product algorithm.","PeriodicalId":355180,"journal":{"name":"2013 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131118861","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: 3
Aquaculture monitoring system based on fuzzy-PID algorithm and intelligent sensor networks 基于模糊pid算法和智能传感器网络的水产养殖监测系统
2013 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference Pub Date : 2013-07-21 DOI: 10.1109/CSQRWC.2013.6657435
Bo Chang, Xinrong Zhang
{"title":"Aquaculture monitoring system based on fuzzy-PID algorithm and intelligent sensor networks","authors":"Bo Chang, Xinrong Zhang","doi":"10.1109/CSQRWC.2013.6657435","DOIUrl":"https://doi.org/10.1109/CSQRWC.2013.6657435","url":null,"abstract":"According to the development needs of aquaculture modernization, the wireless sensor network (WSN) technology is introduced into the development of aquaculture monitoring system, which can effectively solve the problem of complex work environment, scattered monitoring locations, and high wiring cost in the aquaculture. The system uses CC2530 as the core to develop wireless sensor nodes which follow the ZigBee protocol, uses the data collection terminal with high-precision sensor to collect data of the environment for achieving real-time monitoring of aquaculture environment and uses the fuzzy PID control algorithm to process environmental parameters for improving the accuracy of test data. The management function of various sensor nodes is achieved based on embedded database. The system realized the real time measurement and control for the dissolved oxygen, temperature, pH and other parameters of the culture water, reduced energy consumption, reduced latency and increased intensification and intelligent level of aquaculture. The monitoring results have shown that this system is usefulness and efficiency and can meet the application requirement of monitoring environmental parameters in aquaculture.","PeriodicalId":355180,"journal":{"name":"2013 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference","volume":"234 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121245322","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: 13
Research on the influence of tactic maneuver of target detection 战术机动对目标探测的影响研究
2013 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference Pub Date : 2013-07-21 DOI: 10.1109/CSQRWC.2013.6657425
Zhou Chao, Zhang Xiao-kuan, Zhuang Ya-qiang, Zhang Chen-xin, Liu Cang
{"title":"Research on the influence of tactic maneuver of target detection","authors":"Zhou Chao, Zhang Xiao-kuan, Zhuang Ya-qiang, Zhang Chen-xin, Liu Cang","doi":"10.1109/CSQRWC.2013.6657425","DOIUrl":"https://doi.org/10.1109/CSQRWC.2013.6657425","url":null,"abstract":"In view of the application problem of the tactic maneuver of stealth target, the electromagnetic model of one typical stealth target is established and all airspace static RCS is gained in firstly. Secondly, the relationship between tactic maneuver and the line of sight of radar is analyzed. And then the dynamic RCS series is exhibited through different yaw, pitch and rolling maneuver. Finally, the detection probability calculation model is structured and the influence on detection probability is simulated through MATLAB programs when tactic maneuver is adopted by stealth target. Also the conclusions are generally obtained through simulation and the simulation provided a method foundation and experiment evidence for application of tactic maneuver of stealth aircraft.","PeriodicalId":355180,"journal":{"name":"2013 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116483622","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
Influences of loading layout on parameters and coaxial cable coupling laws in reverberation chamber 加载布置对混响室参数及同轴电缆耦合规律的影响
2013 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference Pub Date : 2013-07-21 DOI: 10.1109/CSQRWC.2013.6657339
Wang Shuqiao, W. Qingguo, Jia Rui
{"title":"Influences of loading layout on parameters and coaxial cable coupling laws in reverberation chamber","authors":"Wang Shuqiao, W. Qingguo, Jia Rui","doi":"10.1109/CSQRWC.2013.6657339","DOIUrl":"https://doi.org/10.1109/CSQRWC.2013.6657339","url":null,"abstract":"Through the test of field intensity, power and the S21 of reverberation chamber, the Q value and the independent sampling points with absorbing material loaded in different positions are calculated in this paper, and the result show that as the loading position varies the parameters of reverberation chamber mentioned above differ. And this paper presents the method of using network analyzer and electro-optical conversion equipment to test the laws of coaxial cable coupling. The impact of loadings on coaxial cable coupling is also analyzed.","PeriodicalId":355180,"journal":{"name":"2013 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference","volume":"349 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116499242","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 on electromagnetic scattering from Gaussian rough surface of layered medium with circular polarized wave incidence 圆极化波入射层状介质高斯粗糙表面电磁散射研究
2013 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference Pub Date : 2013-07-21 DOI: 10.1109/CSQRWC.2013.6657416
X. Ren
{"title":"Study on electromagnetic scattering from Gaussian rough surface of layered medium with circular polarized wave incidence","authors":"X. Ren","doi":"10.1109/CSQRWC.2013.6657416","DOIUrl":"https://doi.org/10.1109/CSQRWC.2013.6657416","url":null,"abstract":"The electromagnetic scattering from the rough surface of layered medium with circular polarized wave incidence is studied, the formulae of the scattering coefficient for different polarization is derived using the small perturbation method. A Gaussian rough surface is presented for describing the natural surface of layered medium, the formulae of the bistatic scattering coefficient is deduced. The angular distribution of the bistatic scattering coefficient that the incident wave and scattering wave are right-handed circular polarization are obtained by numerical implementation, the influence of the permittivity of substrate medium, the permittivity and the mean layer thickness of intermediate medium, the roughness surface parameters and the frequency of the incident wave on the bistatic scattering coefficient is discussed. The numerical results show that the influence of the permittivity of substrate medium, the permittivity and the mean layer thickness of intermediate medium, the roughness surface parameters and the frequency of the incident wave on the bistatic scattering coefficient is very complex.","PeriodicalId":355180,"journal":{"name":"2013 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124906273","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
The analysis and measurement of FSS radome for antenna RCS reduction FSS天线罩降低天线RCS的分析与测量
2013 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference Pub Date : 2013-07-21 DOI: 10.1109/CSQRWC.2013.6657413
Wenming Tian, X. Hou, Yongxing Che
{"title":"The analysis and measurement of FSS radome for antenna RCS reduction","authors":"Wenming Tian, X. Hou, Yongxing Che","doi":"10.1109/CSQRWC.2013.6657413","DOIUrl":"https://doi.org/10.1109/CSQRWC.2013.6657413","url":null,"abstract":"This paper investigates the application of bandpass FSS radome with an enclosed antenna to reduce its backward RCS outside of its operating band. A planar array antenna covered with FSS radome is designed and constructed. In order to study the effects of a dielectric embedded FSS on an enclosed antenna pattern, we adopt the ray tracing technique to compute the near field pattern of the antenna-FSS configuration, from which the transmission coefficient and the far field patterns can be calculated. The results show that the backward RCS of antenna array with FSS radome has dramatically reduced than the common antenna array at out of operating band.","PeriodicalId":355180,"journal":{"name":"2013 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126070636","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: 6
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