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

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A wideband Sequential Power Amplifier 一种宽带顺序功率放大器
2014 IEEE MTT-S International Microwave Symposium (IMS2014) Pub Date : 2014-06-01 DOI: 10.1109/MWSYM.2014.6848592
B. Merrick, J. King, T. Brazil
{"title":"A wideband Sequential Power Amplifier","authors":"B. Merrick, J. King, T. Brazil","doi":"10.1109/MWSYM.2014.6848592","DOIUrl":"https://doi.org/10.1109/MWSYM.2014.6848592","url":null,"abstract":"In this work, a wide bandwidth Sequential Power Amplifier (SPA) is demonstrated for the first time. Using wideband and high efficiency 10W and 45W amplifiers, an SPA is described, capable of delivering high efficiency at back-off without the bandwidth limitations of the traditional Doherty PA. Measurement results of the implemented amplifier are presented, with an average back-off drain efficiency of 59% achieved between 1.45 GHz and 2.4 GHz, and a peak back-off drain efficiency of 65% at 1.7 GHz.","PeriodicalId":262816,"journal":{"name":"2014 IEEE MTT-S International Microwave Symposium (IMS2014)","volume":"32 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":"116571827","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
Adaptive beam-steering antenna for improved coverage of non-contact vital sign radar detection 改进非接触式生命体征雷达探测覆盖的自适应波束导向天线
2014 IEEE MTT-S International Microwave Symposium (IMS2014) Pub Date : 2014-06-01 DOI: 10.1109/MWSYM.2014.6848388
Chien-Ming Nieh, Jenshan Lin
{"title":"Adaptive beam-steering antenna for improved coverage of non-contact vital sign radar detection","authors":"Chien-Ming Nieh, Jenshan Lin","doi":"10.1109/MWSYM.2014.6848388","DOIUrl":"https://doi.org/10.1109/MWSYM.2014.6848388","url":null,"abstract":"This paper presents an adaptive beam-steering antenna for non-contact vital sign radar system at 5.8 GHz. A 2X2 microstrip patch antenna and two phase shifters are manufactured on the same board. Phase shifters consisting of 4 single pole double throw (SPDT) switches are integrated into the matching network of the phase array antenna to save the area. Beam-steering function is controlled by the active phase shifter. The DC bias circuit of the phase shifter is connected with the back side of the antenna through headers. Both simulation and measurement show an antenna bandwidth of 200 MHz centered at 5.8 GHz, which is suitable for a 5.8 GHz non-contact vital sign radar system. The radiation beam of this antenna can steer from -22° to 22° in H-plane, which increases the antenna coverage to 85° without sacrificing antenna gain. Measurement shows the adaptive beam-steering antenna can successfully detect human vital signs while the fixed-beam 2×2 antenna fails due to the limited and fixed antenna beam coverage. The improved performance without increasing antenna area makes the adaptive beam-steering antenna more suitable for commercial application.","PeriodicalId":262816,"journal":{"name":"2014 IEEE MTT-S International Microwave Symposium (IMS2014)","volume":"13 4 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":"122362070","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
Frequency scalable large signal transistor behavioral model based on admittance domain formulation 基于导纳域公式的频率可调大信号晶体管行为模型
2014 IEEE MTT-S International Microwave Symposium (IMS2014) Pub Date : 2014-06-01 DOI: 10.1109/MWSYM.2014.6848287
M. Koh, J. Bell, D. Williams, A. Patterson, J. Lees, D. Root, P. Tasker
{"title":"Frequency scalable large signal transistor behavioral model based on admittance domain formulation","authors":"M. Koh, J. Bell, D. Williams, A. Patterson, J. Lees, D. Root, P. Tasker","doi":"10.1109/MWSYM.2014.6848287","DOIUrl":"https://doi.org/10.1109/MWSYM.2014.6848287","url":null,"abstract":"This paper introduces the first formulation and approach that enables measurement based non-linear behavioral look-up table transistor models to be frequency scalable. The experimental results on a M/A-COM GaN HFET from 2 GHz to 8 GHz, support theoretical analysis that frequency domain behavioral models defined in the admittance domain have frequency scalable model coefficients. Load-pull results indicate that the model can accurately predict non-linear behavior at frequencies where the large signal measurements were not performed.","PeriodicalId":262816,"journal":{"name":"2014 IEEE MTT-S International Microwave Symposium (IMS2014)","volume":"41 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":"122907584","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: 11
A novel ka band dual mode super Q Cavity Filter 一种新型ka波段双模超Q腔滤波器
2014 IEEE MTT-S International Microwave Symposium (IMS2014) Pub Date : 2014-06-01 DOI: 10.1109/MWSYM.2014.6848452
B. Yassini, Ming Yu
{"title":"A novel ka band dual mode super Q Cavity Filter","authors":"B. Yassini, Ming Yu","doi":"10.1109/MWSYM.2014.6848452","DOIUrl":"https://doi.org/10.1109/MWSYM.2014.6848452","url":null,"abstract":"A novel Ka band filter with extremely high quality factor is realized using 22nd and 23rd modes of circular waveguide. A dual mode structure with good spurious performance is presented first time in literature. A cross coupled filter with side launched is demonstrated in this work. The results are supported by measured performance at ambient and over temperature.","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":"123023015","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
7.5–15 MHz organic frequency doubler made with pentacene-based diode and paper substrate 7.5 - 15mhz有机倍频器，采用五苯基二极管和纸衬底
2014 IEEE MTT-S International Microwave Symposium (IMS2014) Pub Date : 2014-06-01 DOI: 10.1109/MWSYM.2014.6848395
M. Virili, Giulia Casula, C. Mariotti, G. Orecchini, F. Alimenti, P. Cosseddu, P. Mezzanotte, A. Bonfiglio, L. Roselli
{"title":"7.5–15 MHz organic frequency doubler made with pentacene-based diode and paper substrate","authors":"M. Virili, Giulia Casula, C. Mariotti, G. Orecchini, F. Alimenti, P. Cosseddu, P. Mezzanotte, A. Bonfiglio, L. Roselli","doi":"10.1109/MWSYM.2014.6848395","DOIUrl":"https://doi.org/10.1109/MWSYM.2014.6848395","url":null,"abstract":"This work describes the realization of a fully organic “chip-less” tag, based on the harmonic RFID architecture, operating at 7.5 and 15 MHz. The tag is fabricated on paper substrate and includes an organic pentacene-based diode, as a non-linear component, to generate harmonics. The communication between reader and tag is provided by coupled resonators operating at the fundamental and harmonic frequencies. A measure campaign of the complete reader-tag system has been performed and the results are here reported.","PeriodicalId":262816,"journal":{"name":"2014 IEEE MTT-S International Microwave Symposium (IMS2014)","volume":"14 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":"114585658","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: 14
Physics-based large-signal modeling of intrinsically tunable and switchable ferroelectric FBARs 基于物理的本质可调谐和可切换铁电fbar的大信号建模
2014 IEEE MTT-S International Microwave Symposium (IMS2014) Pub Date : 2014-06-01 DOI: 10.1109/MWSYM.2014.6848610
Seungku Lee, V. Lee, S. A. Sis, A. Mortazawi
{"title":"Physics-based large-signal modeling of intrinsically tunable and switchable ferroelectric FBARs","authors":"Seungku Lee, V. Lee, S. A. Sis, A. Mortazawi","doi":"10.1109/MWSYM.2014.6848610","DOIUrl":"https://doi.org/10.1109/MWSYM.2014.6848610","url":null,"abstract":"An improved large-signal model for intrinsically tunable and switchable ferroelectric FBARs is presented. Ferroelectric FBARs based on multifunctional materials such as BST possess electric-field-tunable permittivity and electric-field-induced piezoelectricity. These properties are promising for the design of a new class of high-power reconfigurable RF devices for frequency-agile radios. Availability of a simple yet accurate large-signal model is indispensable when designing such devices. In this paper, an improved physics-based large-signal model is developed. Modeling results show great agreement with measurement results.","PeriodicalId":262816,"journal":{"name":"2014 IEEE MTT-S International Microwave Symposium (IMS2014)","volume":"140 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":"117089497","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
A new method to fabricate low-loss chip-scale RF inductors 一种制造低损耗芯片级射频电感器的新方法
2014 IEEE MTT-S International Microwave Symposium (IMS2014) Pub Date : 2014-06-01 DOI: 10.1109/MWSYM.2014.6848504
Joshua C. Nation, J. Fiering, Doug White, Michael P. Abban, M. Culpepper, A. Duwel
{"title":"A new method to fabricate low-loss chip-scale RF inductors","authors":"Joshua C. Nation, J. Fiering, Doug White, Michael P. Abban, M. Culpepper, A. Duwel","doi":"10.1109/MWSYM.2014.6848504","DOIUrl":"https://doi.org/10.1109/MWSYM.2014.6848504","url":null,"abstract":"A new method is presented for integrating high performance wire-based inductors into thin, planar, chip-scale formats. The method is designed for compatibility with commonly-used rapid prototyping tools, and fabrication can be automated for volume production. The chip-scale inductors are designed for inductances in the 1-10 nH range, self-resonant frequencies above 5 GHz, and quality factors exceeding 75-100. The process can produce a stand-alone chip or can be integrated with existing multi-chip modules and integrated circuits.","PeriodicalId":262816,"journal":{"name":"2014 IEEE MTT-S International Microwave Symposium (IMS2014)","volume":"32 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":"117092062","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
A multi-resolution FDTD method for uncertainty quantification in the time-domain modeling of microwave structures 用于微波结构时域建模不确定性量化的多分辨率 FDTD 方法
2014 IEEE MTT-S International Microwave Symposium (IMS2014) Pub Date : 2014-06-01 DOI: 10.1109/MWSYM.2014.6848540
Luyu Wang, C. Sarris
{"title":"A multi-resolution FDTD method for uncertainty quantification in the time-domain modeling of microwave structures","authors":"Luyu Wang, C. Sarris","doi":"10.1109/MWSYM.2014.6848540","DOIUrl":"https://doi.org/10.1109/MWSYM.2014.6848540","url":null,"abstract":"Recent research on parameter uncertainty quantification via the Finite-Difference Time-Domain (FDTD) method has led to several approaches aimed at outperforming the conventional Monte-Carlo technique. Among those, the use of polynomial chaos (PC) is characterized by mathematical robustness and computational efficiency. However, it still requires either multiple FDTD runs (in non-intrusive PC methods) or the execution of one large simulation to compute the PC expansion coefficients for all field nodes and time steps (in the intrusive case). This paper presents an intrusive PC-FDTD method stemming from a wavelet-based PC expansion of field components, with respect to the uncertain parameters. This multi-resolution expansion implements a sparse adaptive grid in the uncertain parameter space, which produces significant performance gains, without sacrificing accuracy.","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":"129712823","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
Finite-Difference Time-Domain electromagnetic and thermal modeling of skeletal muscle exposed to millimeter waves 毫米波作用下骨骼肌的时域有限差分电磁和热模拟
2014 IEEE MTT-S International Microwave Symposium (IMS2014) Pub Date : 2014-06-01 DOI: 10.1109/MWSYM.2014.6848513
Robert C Terhune, I. Chatterjee, Jihwan Yoon, G. L. Craviso
{"title":"Finite-Difference Time-Domain electromagnetic and thermal modeling of skeletal muscle exposed to millimeter waves","authors":"Robert C Terhune, I. Chatterjee, Jihwan Yoon, G. L. Craviso","doi":"10.1109/MWSYM.2014.6848513","DOIUrl":"https://doi.org/10.1109/MWSYM.2014.6848513","url":null,"abstract":"Investigations of 94 GHz millimeter wave bioeffects have used an intact fast twitch muscle, isolated from a mouse hind foot, which is 3 mm long and 1 mm thick. Since the muscle does not have an intact vascular system to efficiently remove heat possibly generated by the exposure, observed effects on muscle contraction may be thermal in nature. To address this issue, a detailed model of the skeletal muscle was used to compute the electric fields within the muscle, using the Finite-Difference Time-Domain (FDTD) method, and the resulting temperature change distribution. Results indicate little evidence of micro-heating during exposures.","PeriodicalId":262816,"journal":{"name":"2014 IEEE MTT-S International Microwave Symposium (IMS2014)","volume":"78 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":"128293971","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
Tag-to-reader harmonic link in passive UHF RFID 无源超高频RFID中标签-阅读器谐波链路
2014 IEEE MTT-S International Microwave Symposium (IMS2014) Pub Date : 2014-06-01 DOI: 10.1109/MWSYM.2014.6848442
G. Andia Vera, Y. Duroc, S. Tedjini
{"title":"Tag-to-reader harmonic link in passive UHF RFID","authors":"G. Andia Vera, Y. Duroc, S. Tedjini","doi":"10.1109/MWSYM.2014.6848442","DOIUrl":"https://doi.org/10.1109/MWSYM.2014.6848442","url":null,"abstract":"This paper presents a new communication concept for the passive UHF RFID technology, by means of the exploitation of harmonics signals generated by passive UHF RFID chips. The presence of information carried on the harmonics is experimentally shown by conducted measurements on three different EPC Class-1 Gen2 RFID chips. Therefore, and in compliance with the standard requirements, these results are used in the optimal design of a new tag that increases the power level of the harmonic response, while operating also at the fundamental frequency. The performance of this solution is illustrated from simulation and measurement. Results show an improvement of 11 dB on the 3rd harmonic response compared to commercial tags, thereby, enabling new applications, concepts and functionalities for the RFID technology. To the knowledge of the authors, no similar study has been presented in the literature.","PeriodicalId":262816,"journal":{"name":"2014 IEEE MTT-S International Microwave Symposium (IMS2014)","volume":"23 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":"128704220","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
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