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2012 International Conference on Microwave and Millimeter Wave Technology (ICMMT)最新文献

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Out-of-phase unequal power divider based on parallel dual-lines structure 基于并联双线结构的非等分功率分配器
2012 International Conference on Microwave and Millimeter Wave Technology (ICMMT) Pub Date : 2012-05-05 DOI: 10.1109/ICMMT.2012.6230373
F. Fan, Zehong Yan
{"title":"Out-of-phase unequal power divider based on parallel dual-lines structure","authors":"F. Fan, Zehong Yan","doi":"10.1109/ICMMT.2012.6230373","DOIUrl":"https://doi.org/10.1109/ICMMT.2012.6230373","url":null,"abstract":"The design of a novel compact out-of-phase unequal power divider is presented. By employing a special parallel dual striplines (PDSL) structure, out-of-phase unequal power divider is realized. The out-of-phase characteristic between the two output ports is frequency independent owing to this special structure, and the unequal power-dividing ratio can be easily obtained avoiding high impedance transmission lines like conventional power divider. At last, a 2:1 out-of-phase PDSL power divider has been designed, fabricated and measured. The experimental results show good agreement with simulated ones.","PeriodicalId":421574,"journal":{"name":"2012 International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122977632","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
Broadband power-equalization amplifier 宽带功率均衡放大器
2012 International Conference on Microwave and Millimeter Wave Technology (ICMMT) Pub Date : 2012-05-05 DOI: 10.1109/ICMMT.2012.6230212
P. Zhou, Xiaoqiang Xie, Jun Xie, Jiao Li, Qiuquan Lu
{"title":"Broadband power-equalization amplifier","authors":"P. Zhou, Xiaoqiang Xie, Jun Xie, Jiao Li, Qiuquan Lu","doi":"10.1109/ICMMT.2012.6230212","DOIUrl":"https://doi.org/10.1109/ICMMT.2012.6230212","url":null,"abstract":"The paper presents a new method to design microwave gain equalizer with terminal open line resonators. By changing the electrical length of main transmission line in a certain range, the return loss is improved obviously while transmission parameter changes slightly. Comparing to use the traditional method of optimizing by simulation software, this method greatly reduces the simulation time, improves the design efficiency and precision. This paper designs one microwave gain equalizer and one broadband power-equalization amplifier with the method. The frequency is from 2 GHz to 6 GHz, the maximal output power of broadband power-equalization amplifier is 29.2 dBm at 6 GHz, the value of equalization is 10 dB, and the precision within 1.5 dB.","PeriodicalId":421574,"journal":{"name":"2012 International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116077953","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 cavity backed slot with integrated balun 内置平衡器的空腔背槽
2012 International Conference on Microwave and Millimeter Wave Technology (ICMMT) Pub Date : 2012-05-05 DOI: 10.1109/ICMMT.2012.6230413
Shen Jun-hao, Wang Xiao, Zhang Yuanyuan, Zhao Guoxiang, Xu Xuan
{"title":"A cavity backed slot with integrated balun","authors":"Shen Jun-hao, Wang Xiao, Zhang Yuanyuan, Zhao Guoxiang, Xu Xuan","doi":"10.1109/ICMMT.2012.6230413","DOIUrl":"https://doi.org/10.1109/ICMMT.2012.6230413","url":null,"abstract":"A wideband hemispherical-coverage antenna is described. It is a cavity backed slot radiating element with an integrated microstrip balun. The balun structure provides double-tuning of the slot impedance, yielding a combination with a SWR of 2 or lower and a bandwidth in excess of 24 percent. The slot/balun's structure is simple, has a low profile and easy to construct a conformal antenna or an array. Some measured results are presented.","PeriodicalId":421574,"journal":{"name":"2012 International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115301031","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 broadband diode power sensor covering 0.01GHz to 50GHz 覆盖范围为0.01GHz ~ 50GHz的宽带二极管功率传感器的设计与实现
2012 International Conference on Microwave and Millimeter Wave Technology (ICMMT) Pub Date : 2012-05-05 DOI: 10.1109/ICMMT.2012.6229980
Jinxian Liu
{"title":"Design and implementation of a broadband diode power sensor covering 0.01GHz to 50GHz","authors":"Jinxian Liu","doi":"10.1109/ICMMT.2012.6229980","DOIUrl":"https://doi.org/10.1109/ICMMT.2012.6229980","url":null,"abstract":"This paper reports on the design and experiment of an broadband power sensor based on zero-biase diodes. High performance was achieved across the entire frequency band from 0.01GHz to 50GHz. Emphasis is on the design of the matching circuits using a new method. Other details during the realization of the microwave end such as the choice of diodes and the design of a high precision attenuator are also discussed.","PeriodicalId":421574,"journal":{"name":"2012 International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123827941","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 influence of feed tube changes on performance of log periodic dipole antenna 馈电管的变化对对数周期偶极子天线性能的影响
2012 International Conference on Microwave and Millimeter Wave Technology (ICMMT) Pub Date : 2012-05-05 DOI: 10.1109/ICMMT.2012.6230340
Qiuying Zhao, Xinghui Yin
{"title":"The influence of feed tube changes on performance of log periodic dipole antenna","authors":"Qiuying Zhao, Xinghui Yin","doi":"10.1109/ICMMT.2012.6230340","DOIUrl":"https://doi.org/10.1109/ICMMT.2012.6230340","url":null,"abstract":"Changes in feed tube spacing and the location of feed point will affect the performance of Log Periodic Dipole Antenna (LPDA). In this paper, two log periodic dipole antennas, one works in a higher frequency band and another works in a lower frequency band, will change their own Voltage Standing Wave Ratio (VSWR) with the changes in feed tube spacing and the location of feed point. Based on plenty of frequency sweep in HFSS software and data analysis, this paper gives a method on how to change the feed tube to get the best VSWR.","PeriodicalId":421574,"journal":{"name":"2012 International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"171 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121354372","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
A novel four stage 200W Doherty power amplifier for DVB-T transmitter 一种新型的DVB-T发射机用4级200W Doherty功率放大器
2012 International Conference on Microwave and Millimeter Wave Technology (ICMMT) Pub Date : 2012-05-05 DOI: 10.1109/ICMMT.2012.6230000
Jincong Yao, Guoqin Shen, Guangfei Zhang, Jun Chen
{"title":"A novel four stage 200W Doherty power amplifier for DVB-T transmitter","authors":"Jincong Yao, Guoqin Shen, Guangfei Zhang, Jun Chen","doi":"10.1109/ICMMT.2012.6230000","DOIUrl":"https://doi.org/10.1109/ICMMT.2012.6230000","url":null,"abstract":"In this paper, a novel high efficiency four-stage Doherty power amplifier architecture which is convenient for practical implementation in high power applications for modern communication and digital television standards has been proposed and fabricated. In practical verification, two push-poll LDMOS FET MRF6P3450 are used as the carrier amplifier and peak amplifiers with the transmission lines load network to form a symmetric four-stage Doherty PA. In a CW operation mode, an output power of 800W with a drain efficiency of 62% was achieved. In a DVB-T OFDM with PAR of 9.5 dB operation mode, a high drain efficiency of 52% was achieved at an average output power of 53 dBm, with ACPR measured at -30 dBc level.","PeriodicalId":421574,"journal":{"name":"2012 International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125200938","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
A dual-band dual-sense circularly polarized square-ring slot antenna 一种双频双感圆极化方环槽天线
2012 International Conference on Microwave and Millimeter Wave Technology (ICMMT) Pub Date : 2012-05-05 DOI: 10.1109/ICMMT.2012.6230174
Shui-Wei Zhou, Ping Li, Yang Wang
{"title":"A dual-band dual-sense circularly polarized square-ring slot antenna","authors":"Shui-Wei Zhou, Ping Li, Yang Wang","doi":"10.1109/ICMMT.2012.6230174","DOIUrl":"https://doi.org/10.1109/ICMMT.2012.6230174","url":null,"abstract":"A new dual-band dual-sense circularly polarized (CP) square-ring slot antenna is designed in this paper. By notching two square-ring slots in the ground plane, and changing the gap width in one of the diagonals of the two slots to achieve dual-band CP radiation. If the perturbations of the two slots are symmetrically placed about the microstrip feeding line, then a dual-sense CP radiation is obtained. The proposed antenna is implemented and measured. Simulated and measured results show that the antenna is with good circularly polarized radiations at the two resonant frequencies.","PeriodicalId":421574,"journal":{"name":"2012 International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122460270","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
Study of multiple layer dielectric loaded elliptical ridge waveguide by edge finite element method 多层介质加载椭圆脊波导的边缘有限元研究
2012 International Conference on Microwave and Millimeter Wave Technology (ICMMT) Pub Date : 2012-05-05 DOI: 10.1109/ICMMT.2012.6230133
Guojian Li, A. Ma, Yinqin Cheng
{"title":"Study of multiple layer dielectric loaded elliptical ridge waveguide by edge finite element method","authors":"Guojian Li, A. Ma, Yinqin Cheng","doi":"10.1109/ICMMT.2012.6230133","DOIUrl":"https://doi.org/10.1109/ICMMT.2012.6230133","url":null,"abstract":"A new kind of multiple layer dielectric loaded elliptical ridge waveguide is presented in this paper. Variations of the cutoff wavelength and single-mode bandwidth with the ridge dimensions for different values of dielectric constant have been investigated in detail by using edge element method. The field patterns of the waveguide also have been presented. The results will be of practical significance in designing ridge waveguide components in microwave and millimeter wave engineering.","PeriodicalId":421574,"journal":{"name":"2012 International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122796047","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
Impact of 3D rotation on the characteristics of dual-polarized antenna systems 三维旋转对双极化天线系统特性的影响
2012 International Conference on Microwave and Millimeter Wave Technology (ICMMT) Pub Date : 2012-05-05 DOI: 10.1109/ICMMT.2012.6230086
Yuan Yao, Jianfeng Zheng, Zhenghe Feng
{"title":"Impact of 3D rotation on the characteristics of dual-polarized antenna systems","authors":"Yuan Yao, Jianfeng Zheng, Zhenghe Feng","doi":"10.1109/ICMMT.2012.6230086","DOIUrl":"https://doi.org/10.1109/ICMMT.2012.6230086","url":null,"abstract":"The impact of 3D rotation on the characteristic parameters of dual-polarized antenna systems, including inter-antenna envelope correlation coefficient and cross-polar discrimination (XPD), are analyzed theoretically. The variable parameters are the 3D rotation angle of antennas and the initial environment XPD. Some special rotation cases that are much likely to happen in practices are discussed specifically. It is shown that the conventional 2D rotation analysis in previous literatures is a special case of the 3D analytical model, which validates our theoretical results.","PeriodicalId":421574,"journal":{"name":"2012 International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131106058","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 wideband sigma-delta PLL based phase modulator with pre-distortion filter 带预失真滤波器的宽带sigma-delta锁相环相位调制器
2012 International Conference on Microwave and Millimeter Wave Technology (ICMMT) Pub Date : 2012-05-05 DOI: 10.1109/ICMMT.2012.6230316
Shuai Jiang, F. You, Songbai He
{"title":"A wideband sigma-delta PLL based phase modulator with pre-distortion filter","authors":"Shuai Jiang, F. You, Songbai He","doi":"10.1109/ICMMT.2012.6230316","DOIUrl":"https://doi.org/10.1109/ICMMT.2012.6230316","url":null,"abstract":"A wideband sigma-delta PLL based phase modulator is presented in this paper. In the proposed architecture a pre-distortion filter is applied to balance the phase signals, compensating the suppression beyond the loop bandwidth. By properly balancing the PLL transmission characteristics, the data rate limitation is relieved to the sigma-delta PLL bandwidth. The applicable condition of pre-distortion filter is also analyzed in this paper. The simulation results show that with PLL bandwidth of 1MHz the maximum phase error is no more than 10° and that RMS error is only 0.06° when transmitting 2.85 Mbps GMSK signals.","PeriodicalId":421574,"journal":{"name":"2012 International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131422323","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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