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2014 IEEE MTT-S International Microwave Symposium (IMS2014)最新文献

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Improving 3G/4G receiver sensitivity (TIS) using antenna impedance matching networks 利用天线阻抗匹配网络提高3G/4G接收机灵敏度
2014 IEEE MTT-S International Microwave Symposium (IMS2014) Pub Date : 2014-06-01 DOI: 10.1109/MWSYM.2014.6848615
K. Ho, Hsin-chang Lin, Gabriel M. Rebeiz
{"title":"Improving 3G/4G receiver sensitivity (TIS) using antenna impedance matching networks","authors":"K. Ho, Hsin-chang Lin, Gabriel M. Rebeiz","doi":"10.1109/MWSYM.2014.6848615","DOIUrl":"https://doi.org/10.1109/MWSYM.2014.6848615","url":null,"abstract":"This paper explores new applications for antenna impedance matching networks. It is seen that a tunable matching network can improve the cell phone system noise figure and total integrated sensitivity (TIS) by at ~ 1 dB at 700 MHz - 3 GHz. The reason is that a mismatched low-noise amplifier has a higher noise figure and a lower gain than a noise-matched LNA, and therefore, a tunable matching network is important for noise matching in receiver applications. This would lead to shorter download times and more efficient 3G and 4G mobile networks.","PeriodicalId":262816,"journal":{"name":"2014 IEEE MTT-S International Microwave Symposium (IMS2014)","volume":"139 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124618797","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
Experimental validation of adverse weather effects on a 240 GHz multi-gigabit wireless link 240ghz多千兆无线链路恶劣天气影响的实验验证
2014 IEEE MTT-S International Microwave Symposium (IMS2014) Pub Date : 2014-06-01 DOI: 10.1109/MWSYM.2014.6848416
F. Boes, J. Antes, T. Mahler, U. Lewark, D. Meier, T. Messinger, R. Henneberger, A. Tessmann, T. Zwick, I. Kallfass
{"title":"Experimental validation of adverse weather effects on a 240 GHz multi-gigabit wireless link","authors":"F. Boes, J. Antes, T. Mahler, U. Lewark, D. Meier, T. Messinger, R. Henneberger, A. Tessmann, T. Zwick, I. Kallfass","doi":"10.1109/MWSYM.2014.6848416","DOIUrl":"https://doi.org/10.1109/MWSYM.2014.6848416","url":null,"abstract":"The influence of hydrometeors on a MMIC-based wireless data transmission at 240GHz carrier frequency was experimentally evaluated in a climatic wind tunnel over a distance of 90 m. Successful transmissions of up to 24 Gbit/s QPSK modulated signals through heavy rain at 43 mm/h and dense fog at 3 g/m3 is achieved. The climatic impact is evaluated in terms of EVM. Reducing the bandwidth makes a transmission still possible with a BER <; 1 × 10-3 under conditions, where a free space optical link would fail.","PeriodicalId":262816,"journal":{"name":"2014 IEEE MTT-S International Microwave Symposium (IMS2014)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127043481","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
Switchable dual-frequency barium strontium titanate film bulk acoustic resonators 可切换双频钛酸钡锶薄膜体声谐振器
2014 IEEE MTT-S International Microwave Symposium (IMS2014) Pub Date : 2014-06-01 DOI: 10.1109/MWSYM.2014.6848634
V. Lee, Seungku Lee, S. A. Sis, A. Mortazawi
{"title":"Switchable dual-frequency barium strontium titanate film bulk acoustic resonators","authors":"V. Lee, Seungku Lee, S. A. Sis, A. Mortazawi","doi":"10.1109/MWSYM.2014.6848634","DOIUrl":"https://doi.org/10.1109/MWSYM.2014.6848634","url":null,"abstract":"Innovative frequency selective microwave circuit designs are needed to reduce complexity, size, and cost of multi-standard transceivers. Here, the electric field induced piezoelectricity and electric field dependent permittivity of barium strontium titanate are utilized to design multi-frequency intrinsically switchable film bulk acoustic resonators. Individual resonators with different resonance frequencies are switched on and off by controlling the dc bias voltage applied across their terminals. A switchable dual-frequency resonator consisting of series connected 0.95 GHz and 1.15 GHz resonators is demonstrated. The small size and simple design of multi-frequency BST resonators are attractive for use in oscillators and filters for adaptive and reconfigurable radios.","PeriodicalId":262816,"journal":{"name":"2014 IEEE MTT-S International Microwave Symposium (IMS2014)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130569704","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
Experimental improvement of birefringence and response time in Liquid Crystals using surface preparation of polyimide at 20GHz 20GHz聚酰亚胺表面制备对液晶双折射率和响应时间的实验改进
2014 IEEE MTT-S International Microwave Symposium (IMS2014) Pub Date : 2014-06-01 DOI: 10.1109/MWSYM.2014.6848609
Melroy Machado, S. Ebadi, T. Driscoll, David R. Smith
{"title":"Experimental improvement of birefringence and response time in Liquid Crystals using surface preparation of polyimide at 20GHz","authors":"Melroy Machado, S. Ebadi, T. Driscoll, David R. Smith","doi":"10.1109/MWSYM.2014.6848609","DOIUrl":"https://doi.org/10.1109/MWSYM.2014.6848609","url":null,"abstract":"This paper presents an experimental study analyzing the effects of surface treated Polyimide (PI) on dielectric anisotropy and response time of Liquid Crystal (LC) in an In-Plane Switching (IPS) cell design. A Co-Planar Waveguide (CPW) transmission line is used as an in-plane interrogation architecture, with a layer of LC enclosed on top of the CPW. By applying different surface preparations of PI, we are able to derive an optimum condition to maximize birefringence and minimize response times at 20 GHz. Measured phase change is increased from 28 deg to 72 deg for the same length of the CPW line. At the same time, measurement results show that fall time is decreased from 9.32 s down to 4.1 s. These improvements will facilitate realization of LC in microwave devices in need of fast and tunable materials.","PeriodicalId":262816,"journal":{"name":"2014 IEEE MTT-S International Microwave Symposium (IMS2014)","volume":"210 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114331873","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
Synthesis of LTCC multi-band bandpass filter using reflection and transmission zeros 利用反射零和透射零合成LTCC多带通滤波器
2014 IEEE MTT-S International Microwave Symposium (IMS2014) Pub Date : 2014-06-01 DOI: 10.1109/MWSYM.2014.6848448
Yi-Chieh Lin, Hui-Hsiag Huang, T. Horng
{"title":"Synthesis of LTCC multi-band bandpass filter using reflection and transmission zeros","authors":"Yi-Chieh Lin, Hui-Hsiag Huang, T. Horng","doi":"10.1109/MWSYM.2014.6848448","DOIUrl":"https://doi.org/10.1109/MWSYM.2014.6848448","url":null,"abstract":"In this paper, a multi-band bandpass filter (BPF) based on a novel architecture and design method is presented. Very uniquely, its multi-band frequency response is synthesized by giving the transmission- and reflection-zero frequencies. To verify the proposed method, a miniaturized dual-band BPF is implemented using low-temperature co-fired ceramic (LTCC) technology. The size of filter is 2.0 mm × 1.25 mm × 1.0 mm with the two passbands at 2.4-2.5 GHz and 5.15-5.35 GHz for WLAN applications. Comparison of the filter S-parameters obtained by the synthesized prototype circuit, post-layout simulation and measurement shows good correlation.","PeriodicalId":262816,"journal":{"name":"2014 IEEE MTT-S International Microwave Symposium (IMS2014)","volume":"176 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114378432","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
Low-cost feature-based modeling of microwave structures 基于特征的低成本微波结构建模
2014 IEEE MTT-S International Microwave Symposium (IMS2014) Pub Date : 2014-06-01 DOI: 10.1109/MWSYM.2014.6848276
S. Koziel, J. Bandler, Q. Cheng
{"title":"Low-cost feature-based modeling of microwave structures","authors":"S. Koziel, J. Bandler, Q. Cheng","doi":"10.1109/MWSYM.2014.6848276","DOIUrl":"https://doi.org/10.1109/MWSYM.2014.6848276","url":null,"abstract":"A simple technique for accurate and low-cost modeling of microwave structures is presented. Our approach utilizes response surface approximation at the level of suitably selected response features rather than direct approximation of frequency responses (e.g., S-parameters) of the structure of interest. By exploiting the fact that dependence of the features on designable parameters is much less nonlinear than similar dependence for original responses, accurate quasi-global surrogates can be constructed at a fraction of computational cost necessary by conventional modeling techniques. Numerical verification involving two microstrip filters is provided.","PeriodicalId":262816,"journal":{"name":"2014 IEEE MTT-S International Microwave Symposium (IMS2014)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113987833","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
Wideband mmWave channels: Implications for design and implementation of adaptive beam antennas 宽频带毫米波通道:自适应波束天线设计与实现之意义
2014 IEEE MTT-S International Microwave Symposium (IMS2014) Pub Date : 2014-06-01 DOI: 10.1109/MWSYM.2014.6848596
Shu Sun, T. Rappaport
{"title":"Wideband mmWave channels: Implications for design and implementation of adaptive beam antennas","authors":"Shu Sun, T. Rappaport","doi":"10.1109/MWSYM.2014.6848596","DOIUrl":"https://doi.org/10.1109/MWSYM.2014.6848596","url":null,"abstract":"Millimeter wave mobile systems equipped with adaptive antennas show tremendous potential to provide much higher data rates than traditional cellular systems while offering comparable signal quality. This article presents channel measurement results obtained using a spread spectrum sliding correlator channel sounder at 28 GHz with an ultra-wide RF first null-to-null bandwidth of 800 MHz, collected in the dense urban environment of New York City. Statistics of multipath components, RMS delay spread, path loss, and angle distributions are investigated for antennas with different beamwidths. Theoretical beam combining analysis is performed, showing that the path loss can be reduced by 18.7 dB/decade in distance by coherently combining the four strongest beams at different pointing angles when compared to randomly pointed single beam antennas. Preliminary designs of beamforming and beam combining schemes using frequency domain equalization are proposed.","PeriodicalId":262816,"journal":{"name":"2014 IEEE MTT-S International Microwave Symposium (IMS2014)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114825932","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: 33
Surface-wave leakage from substrate integrated waveguide on grounded dielectric substrate 介电基片接地上基片集成波导的表面波泄漏
2014 IEEE MTT-S International Microwave Symposium (IMS2014) Pub Date : 2014-06-01 DOI: 10.1109/MWSYM.2014.6848551
Xinru Li, Ching-Kuang C. Tzuang, Hsien-Shun Wu
{"title":"Surface-wave leakage from substrate integrated waveguide on grounded dielectric substrate","authors":"Xinru Li, Ching-Kuang C. Tzuang, Hsien-Shun Wu","doi":"10.1109/MWSYM.2014.6848551","DOIUrl":"https://doi.org/10.1109/MWSYM.2014.6848551","url":null,"abstract":"This paper presents the surface-wave leakage from a substrate integrated waveguide (SIW) on a grounded dielectric substrate, which propagates the TM0 mode at the lowest order. The hybrid generalized scattering matrix (GSM) formulation, describing the electromagnetric field inside the rectangular waveguide walls, combined with the finite-element method(FEM), accurately depicting the fields surrounding the microstrip and distributing alongside the infinitely extended grounded substrate, establishes a rigorous formulation to tackle the periodic structure. The resulting lowest order dispersion characteristics show very good agreement with those of the TE10 mode of an ideal rectangular waveguide, when the gap between the posted walls is approaching one thousandth posted wall's diameter. Careful investigation of the electromagnetic field in the plane parallel to the ground plane shows that the leakage is 1) a TM0 surface mode, and 2) significant near and below the cutoff frequency of the rectangular waveguide section of the SIW.","PeriodicalId":262816,"journal":{"name":"2014 IEEE MTT-S International Microwave Symposium (IMS2014)","volume":"112 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124126770","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
Indoor Localization System for 2D measurement in European UWB band with single reference position 基于单一参考位置的欧洲UWB波段二维测量室内定位系统
2014 IEEE MTT-S International Microwave Symposium (IMS2014) Pub Date : 2014-06-01 DOI: 10.1109/MWSYM.2014.6848321
Rupesh Kumar, J. Cousin, B. Huyart, K. Mabrouk
{"title":"Indoor Localization System for 2D measurement in European UWB band with single reference position","authors":"Rupesh Kumar, J. Cousin, B. Huyart, K. Mabrouk","doi":"10.1109/MWSYM.2014.6848321","DOIUrl":"https://doi.org/10.1109/MWSYM.2014.6848321","url":null,"abstract":"In this paper a hybrid 2D-Measurement technique is utilized for the estimation of remote position of an active reflector unit (Tag), in terms of radial distance and azimuth angle. Technique is based on Interferometry and FMCW multistatic radar system which operates in the European UWB frequency band. Measurements have been performed in the real indoor environment for line-of-sight case with respect to a single known reference position. Estimated root-mean-square errors are under 1.58cm & 5.2°, respectively. This new technique offers a wide range of application in robotics, industrial automation and medical domain.","PeriodicalId":262816,"journal":{"name":"2014 IEEE MTT-S International Microwave Symposium (IMS2014)","volume":"226 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128119628","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
Compact 2–28 GHz planar multi-octave bandwidth Wilkinson power dividers 紧凑型2-28 GHz平面多倍频带宽威尔金森功率分压器
2014 IEEE MTT-S International Microwave Symposium (IMS2014) Pub Date : 2014-06-01 DOI: 10.1109/MWSYM.2014.6848660
F. Trenz, M. Hofmann, R. Weigel, G. Fischer, D. Kissinger
{"title":"Compact 2–28 GHz planar multi-octave bandwidth Wilkinson power dividers","authors":"F. Trenz, M. Hofmann, R. Weigel, G. Fischer, D. Kissinger","doi":"10.1109/MWSYM.2014.6848660","DOIUrl":"https://doi.org/10.1109/MWSYM.2014.6848660","url":null,"abstract":"In this paper, two broadband Wilkinson power dividers in microstrip technology are presented. A broadband operation from 2 to 28 GHz could be achieved by a multisectional layout. The dividers differ in the number of cascaded steps, which allows application dependent usage. Furthermore, the dividers make use of commercially available, surface mounted thinfilm-resistors, allowing a straightforward implementation. The maximum occupied area is around 30mm2 for the longer version and around 16mm2 for the shorter version. Measurements show a matching better than 13 dB and an isolation of better than 10 dB over the whole frequency range. The achieved bandwidth ratio of 14:1 represents, in combination with the compact layout, the highest ratio for Wilkinson dividers published so far.","PeriodicalId":262816,"journal":{"name":"2014 IEEE MTT-S International Microwave Symposium (IMS2014)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127921948","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
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