发布求助
文献互助 智能选刊 最新文献

2009 European Microwave Conference (EuMC)最新文献

筛选
英文 中文
Envelope tracking technique applied on a 10W 2nd harmonic tuned power amplifier at 2.14 GHz 包络跟踪技术应用于2.14 GHz的10W二次谐波调谐功率放大器
2009 European Microwave Conference (EuMC) Pub Date : 2009-09-01 DOI: 10.23919/eumc.2009.5296257
E. Cipriani, P. Colantonio, F. Giannini, R. Giofré, L. Piazzon
{"title":"Envelope tracking technique applied on a 10W 2nd harmonic tuned power amplifier at 2.14 GHz","authors":"E. Cipriani, P. Colantonio, F. Giannini, R. Giofré, L. Piazzon","doi":"10.23919/eumc.2009.5296257","DOIUrl":"https://doi.org/10.23919/eumc.2009.5296257","url":null,"abstract":"In this contribution, the simulated and measured results of a 2nd harmonic tuned power amplifier managed with envelope tracking technique are presented. From experimental results, the bias tracking leads to an average efficiency improvement from 30.6% to 43.6% considering 12dB of input power back-off, with respect to the same power amplifier with fixed bias point. In both cases the same behaviour for output power, which reaches 40.4 dBm, and a constant gain (12.4 dB) has been observed.","PeriodicalId":232128,"journal":{"name":"2009 European Microwave Conference (EuMC)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125412951","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
Electromagnetic simulation of electrically large scenarios using the incoherent transmission line matrix method: Theory and application 使用非相干传输线矩阵法的电大场景电磁仿真:理论与应用
2009 European Microwave Conference (EuMC) Pub Date : 2009-09-01 DOI: 10.23919/eumc.2009.5296222
S. Hipp, U. Siart, P. Russer
{"title":"Electromagnetic simulation of electrically large scenarios using the incoherent transmission line matrix method: Theory and application","authors":"S. Hipp, U. Siart, P. Russer","doi":"10.23919/eumc.2009.5296222","DOIUrl":"https://doi.org/10.23919/eumc.2009.5296222","url":null,"abstract":"Electromagnetic simulations in electrically large scenarios often require a huge amount of computation time and memory, due to the need for small discretization and therefore high numbers of discretization cells. We present the incoherent transmission line matrix (ITLM) approach which allows discretization intervals in the order of the wavelength or even larger. This is achieved by frequency averaging of the computed energy densities and neglecting interference phenomena. This results in an approximation comparable to geometrical optics. In complex environments the ITLM method requires less numerical effort than ray tracing. The paper discusses the theoretical foundations as well as a validation of the method by solving a benchmark problem and, as a practical application, by modelling the propoagation of a radar signal in an automobile production hall.","PeriodicalId":232128,"journal":{"name":"2009 European Microwave Conference (EuMC)","volume":"187 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116144878","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
Power amplifier behavioural model mismatch sensitivity and the impact on digital predistortion performance 功率放大器行为模型失配灵敏度及其对数字预失真性能的影响
2009 European Microwave Conference (EuMC) Pub Date : 2009-09-01 DOI: 10.1109/EUMC.2009.5296131
P. Landin, O. Bengtsson, M. Isaksson
{"title":"Power amplifier behavioural model mismatch sensitivity and the impact on digital predistortion performance","authors":"P. Landin, O. Bengtsson, M. Isaksson","doi":"10.1109/EUMC.2009.5296131","DOIUrl":"https://doi.org/10.1109/EUMC.2009.5296131","url":null,"abstract":"This paper presents an investigation of power amplifier behavioural model performance sensitivity to in-band reflections. The measurement system and model extraction process is presented together with the results and an analysis of the effect of parameter variations in a digitally predistorted system. A load-pull system is used together with a digital baseband model extraction system to identify the impact on modelling performance. The results show that the model performance varies greatly with in-band reflection magnitude and phase on the amplifier output. It is also shown that a digital predistortion based on a model extracted at matched conditions, where it gives an excellent improvement of 20 dB in adjacent channel leakage ratio (ACLR), gives a poor improvement of 7 dB for miss-matched conditions with as low reflections as Γ=0.2 (return loss 14 dB). This indicates that in-band reflections need to be considered and adaptive predistortion used also for low VSWR system like base-stations for telecommunication.","PeriodicalId":232128,"journal":{"name":"2009 European Microwave Conference (EuMC)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122334461","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: 8
Fast calculation of theoretical response curves for induction depth sounding 感应测深理论响应曲线的快速计算
2009 European Microwave Conference (EuMC) Pub Date : 2009-09-01 DOI: 10.23919/eumc.2009.5296541
S. Cristina, M. Parise
{"title":"Fast calculation of theoretical response curves for induction depth sounding","authors":"S. Cristina, M. Parise","doi":"10.23919/eumc.2009.5296541","DOIUrl":"https://doi.org/10.23919/eumc.2009.5296541","url":null,"abstract":"A quasi-analytical method is presented for efficiently evaluating the integral expression for the magnetic field (MF) vertical component generated on the surface of a layered earth structure by exposure to an induction depth sounding loop source. The radial distribution of the vertical MF is expressed in closed-form as a linear combination of Hankel functions. The field strength versus induction number is calculated assuming a two-layer earth model. The obtained results are in good agreement with the ones provided by the commonly used digital filter algorithms.","PeriodicalId":232128,"journal":{"name":"2009 European Microwave Conference (EuMC)","volume":"105 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122441103","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
Design of multilayered substrate-integrated waveguide cross-slot couplers 多层基板集成波导交叉槽耦合器的设计
2009 European Microwave Conference (EuMC) Pub Date : 2009-09-01 DOI: 10.23919/eumc.2009.5296094
V. Labay, J. Bornemann, T. Rao
{"title":"Design of multilayered substrate-integrated waveguide cross-slot couplers","authors":"V. Labay, J. Bornemann, T. Rao","doi":"10.23919/eumc.2009.5296094","DOIUrl":"https://doi.org/10.23919/eumc.2009.5296094","url":null,"abstract":"This paper introduces multilayered cross-guide cross-slot directional coupler designs in substrate-integrated waveguide (SIW) technology. Interface ports are modeled by dielectric-filled waveguides which allow for a higher dynamic range in scattering parameters than conventionally used microstrip-to-SIW transitions. It is demonstrated that in double-or triple-layered configurations, coupling values between 10 dB and 25 dB can be achieved over almost an entire waveguide band. Several Ka-band double- or triple-layered cross-guide coupler designs are presented using an Ansoft's HFSS design environment. CST's Microwave Studio is used for performance verification","PeriodicalId":232128,"journal":{"name":"2009 European Microwave Conference (EuMC)","volume":"221 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116865365","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
Near field focusing in large reflectarray antennas using 1-bit digital phase shifters 使用1位数字移相器的大型反射天线近场聚焦
2009 European Microwave Conference (EuMC) Pub Date : 2009-09-01 DOI: 10.1109/EUMC.2009.5296377
S. Ebadi, R. V. Gatti, L. Marcaccioli, R. Sorrentino
{"title":"Near field focusing in large reflectarray antennas using 1-bit digital phase shifters","authors":"S. Ebadi, R. V. Gatti, L. Marcaccioli, R. Sorrentino","doi":"10.1109/EUMC.2009.5296377","DOIUrl":"https://doi.org/10.1109/EUMC.2009.5296377","url":null,"abstract":"The procedure for scanning the beam of a reflectarray antenna in its near field region using 1-bit digital phase shifters will be discussed. Different simulation results will show the performance of the reflectarray in this mode of operation. Effects of parameters such as number of reflecting elements and distance between the illuminating source and the array will be studied. The proposed 77GHz reflectarray antenna is under development as a part of an imaging system in the framework of ARASCOM project (European 7th framework program) and will have a resolution of 1cm at 1m distance from the array with sidelobe levels lower than −10dB in ±2m scanning range.","PeriodicalId":232128,"journal":{"name":"2009 European Microwave Conference (EuMC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129592701","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
A direct CPW-to-rectangular waveguide transition using a dipole slot antenna 使用偶极子槽天线的直接cpw到矩形波导的过渡
2009 European Microwave Conference (EuMC) Pub Date : 2009-09-01 DOI: 10.23919/eumc.2009.5296536
R. Fang, Cheng-Tze Wang, Chun-Long Wang
{"title":"A direct CPW-to-rectangular waveguide transition using a dipole slot antenna","authors":"R. Fang, Cheng-Tze Wang, Chun-Long Wang","doi":"10.23919/eumc.2009.5296536","DOIUrl":"https://doi.org/10.23919/eumc.2009.5296536","url":null,"abstract":"A direct CPW-to-rectangular waveguide transition using a dipole slot antenna is proposed in this paper. The advantage of this transition is that no intermediate transition and vias are needed in this transition. Parameter studies demonstrate that a transition having a fractional bandwidth of 22.85%, for which the return loss is larger than 15 dB, is achieved in the X-band (8.2–12.4 GHz). In order to verify our results, we fabricate and measure a back-to-back transition for which the measurement results agree well with the simulation results.","PeriodicalId":232128,"journal":{"name":"2009 European Microwave Conference (EuMC)","volume":"145 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128431342","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
Investigations of transmission lines and resonant structures on flexed liquid crystal polymer (LCP) substrates up to 67 GHz 67ghz弯曲液晶聚合物(LCP)衬底传输线和谐振结构的研究
2009 European Microwave Conference (EuMC) Pub Date : 2009-09-01 DOI: 10.23919/eumc.2009.5296557
A. Geise, U. Strohmaier, A. Jacob
{"title":"Investigations of transmission lines and resonant structures on flexed liquid crystal polymer (LCP) substrates up to 67 GHz","authors":"A. Geise, U. Strohmaier, A. Jacob","doi":"10.23919/eumc.2009.5296557","DOIUrl":"https://doi.org/10.23919/eumc.2009.5296557","url":null,"abstract":"This paper deals with the effects of bending flexible circuits on liquid crystal polymer (LCP) substrates in the gigahertz range. It investigates how the performance of passive circuit elements is influenced by the bends. For this purpose, four common types of transmission lines and a band-pass filter on flexible LCP substrate are analyzed concerning possible effects caused by sharp bending. Field simulation and measurements up to 67GHz show that the occurring effects are small and negligible for several broadband applications. However, bending the substrate leads to small material deformation which could shift the frequency characteristics of resonant structures in a significant manner.","PeriodicalId":232128,"journal":{"name":"2009 European Microwave Conference (EuMC)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128475318","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: 19
Extending antenna theory to the optical domain 将天线理论扩展到光学领域
2009 European Microwave Conference (EuMC) Pub Date : 2009-09-01 DOI: 10.23919/eumc.2009.5296376
C. Angelis, A. Locatelli, D. Modotto, S. Boscolo, M. Midrio, F. Sacchetto, A. Capobianco, F. M. Pigozzo, C. Someda
{"title":"Extending antenna theory to the optical domain","authors":"C. Angelis, A. Locatelli, D. Modotto, S. Boscolo, M. Midrio, F. Sacchetto, A. Capobianco, F. M. Pigozzo, C. Someda","doi":"10.23919/eumc.2009.5296376","DOIUrl":"https://doi.org/10.23919/eumc.2009.5296376","url":null,"abstract":"We describe an algorithm that yields new design rules for linear wire optical antennas. The ground work of our analysis is to derive first, and then solve, an integro-differential equation that gives the current on the wire antenna, at optical frequencies. Consequently, we compute the near field of these antennas, and thereby determine their equivalent-circuit parameters. An illustrative example is the effective length of a linear wire antenna, whereby we evaluate the field enhancement achievable at the feed gap.","PeriodicalId":232128,"journal":{"name":"2009 European Microwave Conference (EuMC)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128349196","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
Interlaboratory tests in scope of measurement of radio disturbance 无线电干扰测量范围内的实验室间试验
2009 European Microwave Conference (EuMC) Pub Date : 2009-09-01 DOI: 10.23919/eumc.2009.5296286
L. Nowosielski, M. Wnuk, C. Ziółkowski
{"title":"Interlaboratory tests in scope of measurement of radio disturbance","authors":"L. Nowosielski, M. Wnuk, C. Ziółkowski","doi":"10.23919/eumc.2009.5296286","DOIUrl":"https://doi.org/10.23919/eumc.2009.5296286","url":null,"abstract":"In the paper are discussed and reviewed methods of comparative analysis of the measurement data obtained during interlaboratory comparative tests in scope of measurements of radio disturbance according to norm EN 55022. Measures and criteria of evaluation of the tests results are presented. We also present results of the exemplary comparative analysis using discussed in article analytical methods based on the data gathered during actual interlaboratory analysis coordinated by Laboratory of Electromagnetic Compatibility, Faculty of Electronics, Military University of Technology.","PeriodicalId":232128,"journal":{"name":"2009 European Microwave Conference (EuMC)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128647767","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: 18
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信