发布求助
文献互助 智能选刊 最新文献

2012 IEEE/MTT-S International Microwave Symposium Digest最新文献

筛选
英文 中文
Sampling of stochastic electromagnetic fields 随机电磁场的采样
2012 IEEE/MTT-S International Microwave Symposium Digest Pub Date : 2012-06-17 DOI: 10.1109/MWSYM.2012.6259785
J. Russer, T. Asenov, P. Russer
{"title":"Sampling of stochastic electromagnetic fields","authors":"J. Russer, T. Asenov, P. Russer","doi":"10.1109/MWSYM.2012.6259785","DOIUrl":"https://doi.org/10.1109/MWSYM.2012.6259785","url":null,"abstract":"Stochastic electromagnetic fields can be described by the auto- and cross correlation spectra of the electric and magnetic field values at pairs of points in space. In this work the characterization of noisy electromagnetic fields by sampling the field values in pairs of sampling points is discussed. Sampling of the electric or magnetic field values in all pairs of a set of sampling points yields the correlation matrix of the field samples. If the near-field in a surface of reference enclosing the stochastic field sources is sampled and characterized by its correlation matrix the field radiated in the space outside the surface of reference can be calculated and described by the field correlation spectra. Depending on the number of statistically independent field sources the eigenvalue decomposition of the correlation matrix yields a compact description of the measured EM noise field.","PeriodicalId":6385,"journal":{"name":"2012 IEEE/MTT-S International Microwave Symposium Digest","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85042874","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: 29
Detection of closely-spaced objects by a low-cost reader at 2.45 GHz 2.45 GHz低成本读取器对近距离物体的检测
2012 IEEE/MTT-S International Microwave Symposium Digest Pub Date : 2012-06-17 DOI: 10.1109/MWSYM.2012.6258364
N. Arbizzani, M. del Prete, D. Masotti, A. Costanzo
{"title":"Detection of closely-spaced objects by a low-cost reader at 2.45 GHz","authors":"N. Arbizzani, M. del Prete, D. Masotti, A. Costanzo","doi":"10.1109/MWSYM.2012.6258364","DOIUrl":"https://doi.org/10.1109/MWSYM.2012.6258364","url":null,"abstract":"A new long-distance microwave reading system is introduced, that we shall call RID (Remotely Identify and Detect), able to locate and identify objects in harsh indoor environments. This is obtained by augmenting standard RFID reader operations with the mono-pulse RADAR principle and electronic beam scanning capabilities. In this way reading failures due to operation in severe fading environments are effectively overcome. The technique is experimented at 2.45 GHz and may be frequency-scalable: the higher the operating frequency the closer can be the tags to be detected. The system is realized by a suitable combination of custom designed components, such as a double printed-monopole array with electronic scanning capability, and of low-power commercial transceivers and MCUs. This results in an handheld low cost device with total dimensions comparable with typical PDAs. The system capabilities are demonstrated in indoor scenarios locating and selecting closely-spaced tagged items, fixed or moving. From this view point RID could be an answer to the intense research and industrial interest solicited by the needs of interacting with systems of devices, such as sensors and actuators, capable of improving the living conditions both at home and in a work space.","PeriodicalId":6385,"journal":{"name":"2012 IEEE/MTT-S International Microwave Symposium Digest","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85077975","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
Thermal pyrolytic graphite composite with coefficient of thermal expansion matching for advanced thermal management 热膨胀系数匹配的热热解石墨复合材料，先进的热管理
2012 IEEE/MTT-S International Microwave Symposium Digest Pub Date : 2012-06-17 DOI: 10.1109/MWSYM.2012.6259582
W. Fan, Xiang Liu, John Mariner
{"title":"Thermal pyrolytic graphite composite with coefficient of thermal expansion matching for advanced thermal management","authors":"W. Fan, Xiang Liu, John Mariner","doi":"10.1109/MWSYM.2012.6259582","DOIUrl":"https://doi.org/10.1109/MWSYM.2012.6259582","url":null,"abstract":"As demonstrated in this study, bonding TPG with CTE-matched alloys, such as MoCu, simultaneously achieves high thermal conductivity (TC > 900 W/m-K) and low coefficient of thermal expansion (CTE < 9×10−6/K). The TC and CTE measurements as a function of TPG loadings on the TPG-MoCu composites match the theoretical calculation. Compared with the traditional 2-component architecture, heat spreaders made of this TPG composite not only increase the efficiency of thermal spreading, but also eliminate one thermal interface and reduce the integration cost.","PeriodicalId":6385,"journal":{"name":"2012 IEEE/MTT-S International Microwave Symposium Digest","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85580540","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
RF burn-in of dielectric-charging characteristics of micro-electromechanical capacitive switches 微机电电容开关介电充电特性的射频烧毁
2012 IEEE/MTT-S International Microwave Symposium Digest Pub Date : 2012-06-17 DOI: 10.1109/MWSYM.2012.6257778
D. Molinero, C. Palego, X. Luo, J. Hwang, C. Goldsmith
{"title":"RF burn-in of dielectric-charging characteristics of micro-electromechanical capacitive switches","authors":"D. Molinero, C. Palego, X. Luo, J. Hwang, C. Goldsmith","doi":"10.1109/MWSYM.2012.6257778","DOIUrl":"https://doi.org/10.1109/MWSYM.2012.6257778","url":null,"abstract":"We report, for the first time, the benefit of RF burn-in at power levels significantly higher than the nominal handling capacity of micro-electromechanical capacitive switches. The benefit appears to be permanent, so that, after burn-in, the switches remain less vulnerable to dielectric charging and, presumably, more reliable. It was speculated that high RF power permanently changed the bond configuration of the silicon-dioxide dielectric, which prevented charge injection under DC bias. Obviously, more detailed study is needed to elucidate the detailed burn-in mechanism. However, this initial result is very encouraging and can facilitate the application of these switches in many RF systems.","PeriodicalId":6385,"journal":{"name":"2012 IEEE/MTT-S International Microwave Symposium Digest","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85667305","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
220 GHz wireless data transmission experiments up to 30 Gbit/s 220 GHz无线数据传输实验高达30 Gbit/s
2012 IEEE/MTT-S International Microwave Symposium Digest Pub Date : 2012-06-17 DOI: 10.1109/MWSYM.2012.6259561
J. Antes, S. Konig, A. Leuther, H. Massler, J. Leuthold, O. Ambacher, I. Kallfass
{"title":"220 GHz wireless data transmission experiments up to 30 Gbit/s","authors":"J. Antes, S. Konig, A. Leuther, H. Massler, J. Leuthold, O. Ambacher, I. Kallfass","doi":"10.1109/MWSYM.2012.6259561","DOIUrl":"https://doi.org/10.1109/MWSYM.2012.6259561","url":null,"abstract":"A wireless data link using active MMIC components at a carrier frequency of 220 GHz is supporting record data rates of up to 30 Gbit/s. The paper presents receiver sensitivity measurements for data rates up to 30 Gbit/s and wireless data transmission experiments for distances up to 20 m. For this distance a 231 – 1 bit pattern with a data rate of 15 Gbit/s was transmitted. For a transmission distance of 10m it was possible to transmit a 25 Gbit/s signal.","PeriodicalId":6385,"journal":{"name":"2012 IEEE/MTT-S International Microwave Symposium Digest","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81086687","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: 22
Investigation of class-B/J continuous modes in broadband GaN power amplifiers 宽带GaN功率放大器中b /J类连续模式的研究
2012 IEEE/MTT-S International Microwave Symposium Digest Pub Date : 2012-06-17 DOI: 10.1109/MWSYM.2012.6258413
S. Preis, D. Gruner, G. Boeck
{"title":"Investigation of class-B/J continuous modes in broadband GaN power amplifiers","authors":"S. Preis, D. Gruner, G. Boeck","doi":"10.1109/MWSYM.2012.6258413","DOIUrl":"https://doi.org/10.1109/MWSYM.2012.6258413","url":null,"abstract":"The class-B/J mode continuum in power amplifiers (PAs) defined at the current source plane is discussed considering different parasitic elements including CDS as well as the package. Based on this realistic device description the change of the continuous load impedances depending on the reference plane is demonstrated. It is shown that the design flexibility predicted by the continuous mode theory decreases if the transistor package is taken into account. The presented investigations provide the basis for the design of a broadband GaN PA. In the frequency range of 0.9 GHz to 1.8 GHz, this PA achieves a saturated output power of more than 70 W with an efficiency η of 56–63 %. In the extended frequency band up to 2.3 GHz an output power of still 60 W with 53 % drain efficiency is available.","PeriodicalId":6385,"journal":{"name":"2012 IEEE/MTT-S International Microwave Symposium Digest","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81124116","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: 27
Miniaturized high-order UWB bandpass filter using third-order E-shape microstrip structure 采用三阶e型微带结构的小型化高阶超宽带带通滤波器
2012 IEEE/MTT-S International Microwave Symposium Digest Pub Date : 2012-06-17 DOI: 10.1109/MWSYM.2012.6258259
R. T. Hammed, D. Mirshekar-Syahkal
{"title":"Miniaturized high-order UWB bandpass filter using third-order E-shape microstrip structure","authors":"R. T. Hammed, D. Mirshekar-Syahkal","doi":"10.1109/MWSYM.2012.6258259","DOIUrl":"https://doi.org/10.1109/MWSYM.2012.6258259","url":null,"abstract":"Recently a new systematic design rule was proposed to realize high-order UWB bandpass filters using cascaded E-shape microstrip structures. The responses of these miniaturized filters show one transmission zero at the upper stop-band. In order to improve the selectivity at the lower stop-band, this paper proposes a new generation of miniaturized high-order UWB bandpass filters having an attenuation pole in the lower stopband. The filters, employing the E-shape microstrip structure, are the cascade of third-order UWB bandpass filters electromagnetically coupled through λ/4 microstrip lines realised on the dielectric superstrate of the structure. A high selectivity sixth-order UWB bandpass filter is designed, simulated, fabricated and measured. The dimension of the filter is about 4 mm × 6 mm × 0.5 mm excluding the feeding ports. The results from the simulation and measurement show good agreement. It is observed that this filter has attenuation better than 40 dB immediately after the passband, and over a large frequency range in the lower and upper stop bands.","PeriodicalId":6385,"journal":{"name":"2012 IEEE/MTT-S International Microwave Symposium Digest","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81973975","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
Implementing voltage controlled current source in electromagnetic full-wave simulation using the FDTD method 利用时域有限差分法实现了压控电流源在电磁全波仿真中的应用
2012 IEEE/MTT-S International Microwave Symposium Digest Pub Date : 2012-06-17 DOI: 10.1109/MWSYM.2012.6258366
K. ElMahgoub, A. Elsherbeni
{"title":"Implementing voltage controlled current source in electromagnetic full-wave simulation using the FDTD method","authors":"K. ElMahgoub, A. Elsherbeni","doi":"10.1109/MWSYM.2012.6258366","DOIUrl":"https://doi.org/10.1109/MWSYM.2012.6258366","url":null,"abstract":"The implementation of a voltage controlled current source (VCCS) in full-wave electromagnetic simulation using finite-difference time-domain (FDTD) is introduced. The VCCS is used to model a metal oxide semiconductor field effect transistor (MOSFET) commonly used in microwave circuits. This new approach is verified with several numerical examples including circuits with VCCS and MOSFET. Good agreement is obtained when the results are compared with those based on analytical solution and PSpice.","PeriodicalId":6385,"journal":{"name":"2012 IEEE/MTT-S International Microwave Symposium Digest","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73423308","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
Overlapped segment piece-wise polynomial pre-distortion for the linearisation of power amplifiers in the presence of high PAPR OFDM signals 在高PAPR OFDM信号存在下，用于功率放大器线性化的重叠分段分段多项式预失真
2012 IEEE/MTT-S International Microwave Symposium Digest Pub Date : 2012-06-17 DOI: 10.1109/MWSYM.2012.6259543
S. Bensmida, K. Mimis, K. Morris, M. Beach, J. Mcgeehan, J. Lees, J. Benedikt, P. Tasker
{"title":"Overlapped segment piece-wise polynomial pre-distortion for the linearisation of power amplifiers in the presence of high PAPR OFDM signals","authors":"S. Bensmida, K. Mimis, K. Morris, M. Beach, J. Mcgeehan, J. Lees, J. Benedikt, P. Tasker","doi":"10.1109/MWSYM.2012.6259543","DOIUrl":"https://doi.org/10.1109/MWSYM.2012.6259543","url":null,"abstract":"A modified piece-wise polynomial pre-distortion is proposed, investigated and compared against classic memoryless polynomial pre-distortion. The proposed enhanced piece-wise polynomial pre-distortion uses the overlap between segments to ensure continuity in the total pre-distortion function. The implementation of overlap allows the use of a simple error estimation algorithm to minimise hand over error. The classic and proposed piece-wise pre-distortion performances are assessed and compared for several sets of polynomial coefficients. The proposed method is shown to consistently outperform classical polynomial pre-distortion in terms of required coefficients and linearity improvement. The method is applied for the linearisation of an envelope tracking Class-J PA at 1.7GHz, under a 1.4MHz LTE signal with a 14.4dB PAPR.","PeriodicalId":6385,"journal":{"name":"2012 IEEE/MTT-S International Microwave Symposium Digest","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80454054","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
Microwave biosensors for identifying cancer cell aggressiveness grade 用于识别癌细胞侵袭性等级的微波生物传感器
2012 IEEE/MTT-S International Microwave Symposium Digest Pub Date : 2012-06-17 DOI: 10.1109/MWSYM.2012.6259539
Ling Yan Zhang, Christophe Bounaix Morand du Puch, A. Lacroix, C. Dalmay, A. Pothier, C. Lautrette, S. Battu, F. Lalloué, M. Jauberteau, P. Blondy
{"title":"Microwave biosensors for identifying cancer cell aggressiveness grade","authors":"Ling Yan Zhang, Christophe Bounaix Morand du Puch, A. Lacroix, C. Dalmay, A. Pothier, C. Lautrette, S. Battu, F. Lalloué, M. Jauberteau, P. Blondy","doi":"10.1109/MWSYM.2012.6259539","DOIUrl":"https://doi.org/10.1109/MWSYM.2012.6259539","url":null,"abstract":"This paper illustrates the potential of microwave frequencies for biological analysis. Once penetrating inside biological cells, microwaves can interact with their intracellular content and inform on their safe or malignant state. This work demonstrates that their cancer grade (i.e. aggressiveness level) can also be identified by this way. Hence, based on permittivity measurements on three colon cancer cell lines loading RF resonators, the presented results show significant differences of electromagnetic signature in the cancer grade of analyzed cells. This sensing method appears very promising to develop new powerful tools for early cancer diagnostic.","PeriodicalId":6385,"journal":{"name":"2012 IEEE/MTT-S International Microwave Symposium Digest","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82527011","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: 28
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