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2012 19th International Conference on Microwaves, Radar & Wireless Communications最新文献

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Investigation of the improved method for TDOA estimation with chirp signals 基于啁啾信号的TDOA估计改进方法研究
2012 19th International Conference on Microwaves, Radar & Wireless Communications Pub Date : 2012-05-21 DOI: 10.1109/MIKON.2012.6233478
P. Zietek, J. Kołakowski, J. Modelski
{"title":"Investigation of the improved method for TDOA estimation with chirp signals","authors":"P. Zietek, J. Kołakowski, J. Modelski","doi":"10.1109/MIKON.2012.6233478","DOIUrl":"https://doi.org/10.1109/MIKON.2012.6233478","url":null,"abstract":"This paper includes results of the extensive measurement campaign aimed at verifying the novel method for TDOA estimation in positioning systems utilizing chirp transmissions. The proposed solution consists in determination of LOS component instantaneous frequency and correction algorithm based on statistical properties of the signal. The performed simulations and experiments prove that the proposed TDOA estimation method shows good accuracy and thus has the potential to be used in indoor location applications.","PeriodicalId":425104,"journal":{"name":"2012 19th International Conference on Microwaves, Radar & Wireless Communications","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127203640","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
Terahertz properties of metallic layers and grids 金属层和网格的太赫兹特性
2012 19th International Conference on Microwaves, Radar & Wireless Communications Pub Date : 2012-05-21 DOI: 10.1109/MIKON.2012.6233514
J. Szczytko, M. Stolarek, B. Piętka, J. Lusakowski, A. Wawro, A. Barańska, E. Papis, R. Adomavisius, A. Krotkus, N. Pałka, P. Zagrajek
{"title":"Terahertz properties of metallic layers and grids","authors":"J. Szczytko, M. Stolarek, B. Piętka, J. Lusakowski, A. Wawro, A. Barańska, E. Papis, R. Adomavisius, A. Krotkus, N. Pałka, P. Zagrajek","doi":"10.1109/MIKON.2012.6233514","DOIUrl":"https://doi.org/10.1109/MIKON.2012.6233514","url":null,"abstract":"Metallic layers and grids are a part of THz semiconductor devices and a detailed understanding of their properties is required. We carried out experimental and numerical studies of properties of Au layers and grids on GaAs surface. The results allow for a better modelling of devices and understanding their THz response.","PeriodicalId":425104,"journal":{"name":"2012 19th International Conference on Microwaves, Radar & Wireless Communications","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131688182","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
Channel impulse response inside a magnetic resonance imaging device at 0.8 GHz to 27 GHz 磁共振成像设备内部0.8 GHz至27 GHz通道脉冲响应
2012 19th International Conference on Microwaves, Radar & Wireless Communications Pub Date : 2012-05-21 DOI: 10.1109/MIKON.2012.6233474
M. Wiehl, S. Schwarzer, G. Fischer, R. Weigel, A. Koelpin
{"title":"Channel impulse response inside a magnetic resonance imaging device at 0.8 GHz to 27 GHz","authors":"M. Wiehl, S. Schwarzer, G. Fischer, R. Weigel, A. Koelpin","doi":"10.1109/MIKON.2012.6233474","DOIUrl":"https://doi.org/10.1109/MIKON.2012.6233474","url":null,"abstract":"Up to now, wireless transmission in a magnetic resonance imaging (MRI) device is not used extensively for sensor networks or data transmission. Wireless sensors measuring physiological parameters like pulse, ECG, blood pressure or temperature would increase patient safety during a measurement. Beside and rather more interesting is the transmission of MRI sensor data. Patients benefit from higher comfort in the magnet and faster preparation for a measurement procedure. The wireless channels in an MRI device are not well studied at present. In this paper we give a first overview of the available antenna configurations for wireless links and summarize published results. As an MRI device is located in a shielded chamber, the frequency range for a transmission can be chosen freely above the resonance frequencies of the nuclei. To get an insight in the MRI channels we studied in a first approach three exemplary channels at the GSM-900 band, the 5 GHz WLAN band and the 24 GHz ISM band in three scenarios: empty, a real patient, a NaCl-filled tube.","PeriodicalId":425104,"journal":{"name":"2012 19th International Conference on Microwaves, Radar & Wireless Communications","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134314551","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
Designing and optimization of microstrip rectangular patch antenna to work on human body 适用于人体的微带矩形贴片天线的设计与优化
2012 19th International Conference on Microwaves, Radar & Wireless Communications Pub Date : 2012-05-21 DOI: 10.1109/MIKON.2012.6233634
M. Wozniak, A. Durka, M. Bugaj, R. Przesmycki, L. Nowosielski, M. Wnuk
{"title":"Designing and optimization of microstrip rectangular patch antenna to work on human body","authors":"M. Wozniak, A. Durka, M. Bugaj, R. Przesmycki, L. Nowosielski, M. Wnuk","doi":"10.1109/MIKON.2012.6233634","DOIUrl":"https://doi.org/10.1109/MIKON.2012.6233634","url":null,"abstract":"A microstrip rectangular patch antenna for wearable applications is presented. The antenna is suitable for GSM 1800 operated at 1710-1785 MHz and 1805-1880 MHz. This suggested antenna is designed as a 101.3 mm wide, 159.172 mm long and 1.524 mm thick structure that is optimized for performance on the human body. The antenna was tested with a human user wearing it. As the result of the characteristics measurements made in the anechoic chamber, the S11 parameter was shown to be -33 dB (-10 dB bandwidth: 34 MHz, center frequency: 1.79 GHz).","PeriodicalId":425104,"journal":{"name":"2012 19th International Conference on Microwaves, Radar & Wireless Communications","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130958203","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: 12
Inexpensive approach to dielectric measurements 廉价的电介质测量方法
2012 19th International Conference on Microwaves, Radar & Wireless Communications Pub Date : 2012-05-21 DOI: 10.1109/MIKON.2012.6233486
P. Korpas, W. Wojtasiak, J. Krupka, W. Gwarek
{"title":"Inexpensive approach to dielectric measurements","authors":"P. Korpas, W. Wojtasiak, J. Krupka, W. Gwarek","doi":"10.1109/MIKON.2012.6233486","DOIUrl":"https://doi.org/10.1109/MIKON.2012.6233486","url":null,"abstract":"Split post dielectric resonators (SPDR) are commonly used for measurements of complex permittivity and losses measurements of many materials. The permittivity of the sample is calculated basing on the change in a resonance curve of the loaded and unloaded SPDR. The paper presents an inexpensive replacement for Vector Network Analyser normally used to determine the resonator's Q-factor. The proposed system is recommended for those customers, who don't need such rich-featured equipment as VNAs.","PeriodicalId":425104,"journal":{"name":"2012 19th International Conference on Microwaves, Radar & Wireless Communications","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115314054","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: 4
Electrodynamical characteristic particularities of waveguides and scattering structures made of modern strong absorptive materials 现代强吸收材料制成的波导和散射结构的电动力学特性
2012 19th International Conference on Microwaves, Radar & Wireless Communications Pub Date : 2012-05-21 DOI: 10.1109/MIKON.2012.6233593
L. Nickelson
{"title":"Electrodynamical characteristic particularities of waveguides and scattering structures made of modern strong absorptive materials","authors":"L. Nickelson","doi":"10.1109/MIKON.2012.6233593","DOIUrl":"https://doi.org/10.1109/MIKON.2012.6233593","url":null,"abstract":"Here electrodynamical characteristics of open cylindrical waveguides and cylindrical scatterers made of strong absorptive materials are presented. There are unusual peaks (extremums) on characteristic curves of waveguide and scatterer structures. These electrodynamical characteristics are differ from such ones when the structures are made of lossless or low-loss materials. The complex longitudinal propagation constant of the main mode of open SiC waveguide at the temperature 1800°C and several waveguide radii from 1.6 mm till 3.2 mm are demonstrated here. We see that for some radii of waveguides are extremums of phase and attenuation constants. The extremums' frequency is dependent on the waveguide radius. The ones are shifted to the low frequency with increasing of radius. We show here dependences of absorbed powers of incident microwave by a multilayered cylinder with a radius 2 mm. The cylinder consists of a conductor core that is coated by the twenty four lossy n-Si semiconductor and acrylic-glass alternative layers. Here is presented characteristics of multilayered cylinder with the external acrylic-glass layer. The dispersion dependency of semiconductor loss is taken into account here. The thickness of all layers as well as the radius of the conductor core are the same and equal to 0.08 mm. We have compared absorbed power dependences on the microwave polarization and the n-Si specific resistivity. We discovered specific dependences of absorbed powers on the parameters.","PeriodicalId":425104,"journal":{"name":"2012 19th International Conference on Microwaves, Radar & Wireless Communications","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123889108","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
Comparison of regular and floating bulk transistors in ultra-wideband CMOS T/R switches 超宽带CMOS T/R开关中常规和浮动体晶体管的比较
2012 19th International Conference on Microwaves, Radar & Wireless Communications Pub Date : 2012-05-21 DOI: 10.1109/MIKON.2012.6233540
Tao Zhang, V. Subramanian, G. Boeck
{"title":"Comparison of regular and floating bulk transistors in ultra-wideband CMOS T/R switches","authors":"Tao Zhang, V. Subramanian, G. Boeck","doi":"10.1109/MIKON.2012.6233540","DOIUrl":"https://doi.org/10.1109/MIKON.2012.6233540","url":null,"abstract":"This work presents the theoretical analysis, circuit realization and characterization of two types of CMOS T/R switches based on the conventional NMOS and floating bulk NMOS transistors. An improved biasing circuit for floating bulk has been proposed. Two DC to 30 GHz CMOS T/R switches have been fabricated and measured in a 130 nm CMOS process. The regular switch has an insertion loss of 3.6 dB and an isolation of 28 dB up to 30 GHz while the floating bulk switch has an insertion loss of 2.8 dB and an isolation of 19 dB up to 30 GHz. The chip sizes are only 0.01 mm2. The obtained results compare the state-of-the-art realizations.","PeriodicalId":425104,"journal":{"name":"2012 19th International Conference on Microwaves, Radar & Wireless Communications","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122745731","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
Controlling the THz heterodyne — Lesson learned from HIFI/Herschel mission 控制太赫兹外差- HIFI/Herschel任务的经验教训
2012 19th International Conference on Microwaves, Radar & Wireless Communications Pub Date : 2012-05-21 DOI: 10.1109/MIKON.2012.6233606
P. Orleanski, M. Michalska, W. Nowosielski, J. Pearson, M. Ciechanowicz, T. Klein, C. Risacher, F. Helmich, H. Jacobs, W. Jellema, A. D. de Jonge, P. Roelfsema, R. Shipman, A. D. di Giorgio, D. Teyssier
{"title":"Controlling the THz heterodyne — Lesson learned from HIFI/Herschel mission","authors":"P. Orleanski, M. Michalska, W. Nowosielski, J. Pearson, M. Ciechanowicz, T. Klein, C. Risacher, F. Helmich, H. Jacobs, W. Jellema, A. D. de Jonge, P. Roelfsema, R. Shipman, A. D. di Giorgio, D. Teyssier","doi":"10.1109/MIKON.2012.6233606","DOIUrl":"https://doi.org/10.1109/MIKON.2012.6233606","url":null,"abstract":"The Local Oscillator Subsystem (LOS/S) is a part of the HIFI (Heterodyne Instrument for the Far Infrared) project, an infrared heterodyne instrument for astronomical observations on the ESA HERSCHEL Space Observatory. Local Oscillator Subsystem uses the set of sensitive microwave components, essential for frequency multiplication from K/Ka Bands to 480/1910GHz. The paper presents the methods of biasing of the LOU independent microwave amplifiers and diodes. The special care at the design phase was given to different methods of protection against wrong biasing of such components. The results of the protection, implemented in LCU hardware and software, are discussed at the paper, based on the lessons learned from more than four years of pre-launch activities and almost three years of HIFI operations on the orbit.","PeriodicalId":425104,"journal":{"name":"2012 19th International Conference on Microwaves, Radar & Wireless Communications","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128312523","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
Semiconductor plasma rod attenuation dependencies of modes on the concentration of light and heavy holes 半导体等离子体棒衰减模式与轻、重空穴浓度的关系
2012 19th International Conference on Microwaves, Radar & Wireless Communications Pub Date : 2012-05-21 DOI: 10.1109/MIKON.2012.6233592
A. Bubnelis, L. Nickelson, R. Martavičius
{"title":"Semiconductor plasma rod attenuation dependencies of modes on the concentration of light and heavy holes","authors":"A. Bubnelis, L. Nickelson, R. Martavičius","doi":"10.1109/MIKON.2012.6233592","DOIUrl":"https://doi.org/10.1109/MIKON.2012.6233592","url":null,"abstract":"In this work are examined the phase and attenuation constants of open magnetoactive p-Ge rod waveguides. Our algorithm allows analyzing the very high waveguide losses. Dispersion characteristics of p-Ge with two component hole charge carriers waveguide are calculated when the ratio of heavy holes' concentration in the material is equal to 25%, 50% and 75% of the total free carrier concentration. Dispersion characteristics of the main helicon and eight higher helicon modes are presented here. There are the degeneration and the transformation of higher hybrid modes at some heavy holes' concentrations. The waveguide broadbandwidth can be considerably extended due to the fact that the losses of the higher modes are considerably larger in comparisons to the main mode loss at the certain heavy holes' concentration.","PeriodicalId":425104,"journal":{"name":"2012 19th International Conference on Microwaves, Radar & Wireless Communications","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114651180","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
User specific tilt in multicell cooperative transmission cellular systems 多蜂窝协同传输系统中的用户特定倾斜
2012 19th International Conference on Microwaves, Radar & Wireless Communications Pub Date : 2012-05-21 DOI: 10.1109/MIKON.2012.6233599
R. Lapszow, J. Modelski
{"title":"User specific tilt in multicell cooperative transmission cellular systems","authors":"R. Lapszow, J. Modelski","doi":"10.1109/MIKON.2012.6233599","DOIUrl":"https://doi.org/10.1109/MIKON.2012.6233599","url":null,"abstract":"A cooperative multicell signal processing (CoMP) has a big potential to become and attractive solution for 4G networks. However CoMP has a number of drawbacks, some of them are discussed in this paper. Additionally to joint transmission concept realized in distributed antenna system environment an implementation of user specific tilt (UST) is concerned. UST is proposed as an alternative to multi-input-multi-output (MIMO) techniques. A concept of UST offering physical separation intercell areas by adapting codebook to form a user specific beam is presented.","PeriodicalId":425104,"journal":{"name":"2012 19th International Conference on Microwaves, Radar & Wireless Communications","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116998385","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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