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2007 IEEE/MTT-S International Microwave Symposium最新文献

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Microwave FBAR Structures Fabricated using Micromachined GaN Membranes 微加工GaN膜制备微波FBAR结构
2007 IEEE/MTT-S International Microwave Symposium Pub Date : 2007-06-03 DOI: 10.1109/MWSYM.2007.380119
D. Neculoiu, G. Konstantinidis, A. Muller, A. Kostopoulos, D. Vasilache, K. Mutamba, C. Sydlo, H. Hartnagel, L. Bary, R. Plana
{"title":"Microwave FBAR Structures Fabricated using Micromachined GaN Membranes","authors":"D. Neculoiu, G. Konstantinidis, A. Muller, A. Kostopoulos, D. Vasilache, K. Mutamba, C. Sydlo, H. Hartnagel, L. Bary, R. Plana","doi":"10.1109/MWSYM.2007.380119","DOIUrl":"https://doi.org/10.1109/MWSYM.2007.380119","url":null,"abstract":"This paper reports on microwave characteristics of micromachined GaN-based thin-film bulk acoustic resonator devices. The 2.2 micron active piezoelectric layer was epitaxially grown on (111)-oriented high-resistivity silicon substrate. Bulk micromachining techniques were used for the release of the resonating GaN membrane structure. S-parameter measurements have shown a fundamental mode resonance around 1.3 GHz. Extracted material parameters such as an acoustic velocity of 5700 m/s and an effective coupling coefficient of about 2% are in good agreement with those reported in the literature using other fabrication methods.","PeriodicalId":213749,"journal":{"name":"2007 IEEE/MTT-S International Microwave Symposium","volume":"148 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123076617","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: 17
UWB Pulse Oscillator at 24 GHz with 2.1 GHz Bandwidth for Industrial Radar Sensor Applications 24 GHz超宽带脉冲振荡器，2.1 GHz带宽，用于工业雷达传感器应用
2007 IEEE/MTT-S International Microwave Symposium Pub Date : 2007-06-03 DOI: 10.1109/MWSYM.2007.380090
T. Wuchenauer, M. Nalezinski, W. Menzel
{"title":"UWB Pulse Oscillator at 24 GHz with 2.1 GHz Bandwidth for Industrial Radar Sensor Applications","authors":"T. Wuchenauer, M. Nalezinski, W. Menzel","doi":"10.1109/MWSYM.2007.380090","DOIUrl":"https://doi.org/10.1109/MWSYM.2007.380090","url":null,"abstract":"A fast pulse oscillator in thin film technique at 24 GHz for high resolution low power industrial radar sensor applications is presented. Both linear and nonlinear simulation techniques as well as a simple mathematical model are employed for design and optimization. The 3dB-bandwidth of the pulse envelope is more than 2.1 GHz, the time duration is less than 480 ps. The average power of the pulses is compliant with FCC regulations for a pulse repetition frequency between 1 MHz and 4 MHz. The oscillator is mounted in a low-cost commercial package for SMT without significant performance degradation. Application in a radar sensor results in a range resolution of 10 cm.","PeriodicalId":213749,"journal":{"name":"2007 IEEE/MTT-S International Microwave Symposium","volume":"94 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123124150","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
Compact Rat-Race Hybrid Coupler Implemented Through Artificial Left Handed and Right Handed Lines 通过人工左手和右手线实现的紧凑型大鼠混合耦合器
2007 IEEE/MTT-S International Microwave Symposium Pub Date : 2007-06-03 DOI: 10.1109/MWSYM.2007.380209
G. Sisó, J. Bonache, M. Gil, J. García-García, F. Martín
{"title":"Compact Rat-Race Hybrid Coupler Implemented Through Artificial Left Handed and Right Handed Lines","authors":"G. Sisó, J. Bonache, M. Gil, J. García-García, F. Martín","doi":"10.1109/MWSYM.2007.380209","DOIUrl":"https://doi.org/10.1109/MWSYM.2007.380209","url":null,"abstract":"In this work, a rat-race hybrid coupler based on left handed (LH) and right handed (RH) lines implemented by means of complementary split rings resonators (CSRRs) is designed and fabricated for the first time. The three 90deg transmission lines of the conventional device are replaced by RH artificial lines consisting on the combination of a CSRR and a shunt connected stub; the 270deg line is substituted by a -90deg LH line, where a CSRR is combined with a series gap. The resulting device is three times smaller than the conventional rat-race, the artificial lines do not include lumped elements, and device performance is good. Since dispersion in the artificial lines forming the device can be tailored, excellent characteristics in terms of phase-balance are obtained. These artificial lines can be applied to other microwave components. Size reduction and performance improvement are the key issues.","PeriodicalId":213749,"journal":{"name":"2007 IEEE/MTT-S International Microwave Symposium","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126576872","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: 23
Electromagnetic Dosimetry and Thermal Analysis of a New Exposure Setup for In Vitro Studies on a Large Frequency Band 一种用于大频段体外研究的新型暴露装置的电磁剂量学和热分析
2007 IEEE/MTT-S International Microwave Symposium Pub Date : 2007-06-03 DOI: 10.1109/MWSYM.2007.380402
A. Collin, M. Cueille, A. Perrin, C. Pivain, P. Lévêque
{"title":"Electromagnetic Dosimetry and Thermal Analysis of a New Exposure Setup for In Vitro Studies on a Large Frequency Band","authors":"A. Collin, M. Cueille, A. Perrin, C. Pivain, P. Lévêque","doi":"10.1109/MWSYM.2007.380402","DOIUrl":"https://doi.org/10.1109/MWSYM.2007.380402","url":null,"abstract":"A new in vitro exposure setup has been developed to expose cells in Petri dishes on a large frequency band (500 MHz to 5 GHz). The illumination is a far field irradiation made with a horn antenna in an anechoic chamber, and the setup has been designed to agitate the biological solution in the Petri dishes in order to obtain a homogeneous SAR in the Petri dishes. The incubator has got a cooling water system to have constant temperature inside the setup. An accurate dosimetry has been done to take into account all the reflections due to the incubator.","PeriodicalId":213749,"journal":{"name":"2007 IEEE/MTT-S International Microwave Symposium","volume":"166 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116058037","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
Single crystal FBAR with LiNbO3 and LiTaO3 piezoelectric substance layers 具有LiNbO3和LiTaO3压电物质层的单晶FBAR
2007 IEEE/MTT-S International Microwave Symposium Pub Date : 2007-06-03 DOI: 10.1109/MWSYM.2007.380118
Y. Osugi, T. Yoshino, K. Suzuki, T. Hirai
{"title":"Single crystal FBAR with LiNbO3 and LiTaO3 piezoelectric substance layers","authors":"Y. Osugi, T. Yoshino, K. Suzuki, T. Hirai","doi":"10.1109/MWSYM.2007.380118","DOIUrl":"https://doi.org/10.1109/MWSYM.2007.380118","url":null,"abstract":"The film bulk acoustic resonator (hereinafter referred to as FBAR) has been proposed for use as a high performance filter. FBAR consists of an acoustic resonator through use of a thin film deposition process. On the other hand, single crystals have been widely utilized as material for resonators due to their material uniformity, low material defect rates, and high material stability. The use of a single crystal to achieve a high frequency resonator will further expand FBAR's application ranges. In this paper, we present single crystal FBAR that is characterized by low loss and high bandwidth. Additionally, this device has the following features: the capability to fabricate a single crystal acoustic resonator through the use of single crystal micro processing technology, such as a single crystal wafer junction, polishing, and etching; and the capability of a wide range of desired filter bandwidths, each able to secure an ample amount of high performance characteristics by varying the single crystal's type and direction. LiNbO3 (LN) and LiTaO3 (LT), each with the large electromechanical coupling factor kt2, are used for the single crystal. 3-inch full-wafer processing is performed, thereby yielding superior uniformity resonators.","PeriodicalId":213749,"journal":{"name":"2007 IEEE/MTT-S International Microwave Symposium","volume":"129 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121699376","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: 39
Full wave analysis of image lines 全波分析图像线
2007 IEEE/MTT-S International Microwave Symposium Pub Date : 2007-06-03 DOI: 10.1109/MWSYM.2007.380029
M. Lucido, G. Panariello, F. Schettino
{"title":"Full wave analysis of image lines","authors":"M. Lucido, G. Panariello, F. Schettino","doi":"10.1109/MWSYM.2007.380029","DOIUrl":"https://doi.org/10.1109/MWSYM.2007.380029","url":null,"abstract":"Aim of this work is the analysis of natural modes of image lines. By introducing equivalent surface electric and magnetic currents, the boundary integral equations are obtained. The Galerkin method in the spectral domain with expansion functions factorizing the dominant edge behaviors of the unknowns is applied to reduce the system of integral equations to symmetric infinite-matrix equations the elements of which are single integrals that can be efficiently evaluated. In such a way the integral operator is discretized and analytically regularized thus leading to a fast converging method.","PeriodicalId":213749,"journal":{"name":"2007 IEEE/MTT-S International Microwave Symposium","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125262786","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
Low Cost Method for Localized Packaging of Temperature Sensitive Capacitive RF MEMS Switches in Liquid Crystal Polymer 液晶聚合物中温敏电容式RF MEMS开关的低成本本地化封装方法
2007 IEEE/MTT-S International Microwave Symposium Pub Date : 2007-06-03 DOI: 10.1109/MWSYM.2007.380295
M. Morton, N. Kingsley, J. Papapolymerou
{"title":"Low Cost Method for Localized Packaging of Temperature Sensitive Capacitive RF MEMS Switches in Liquid Crystal Polymer","authors":"M. Morton, N. Kingsley, J. Papapolymerou","doi":"10.1109/MWSYM.2007.380295","DOIUrl":"https://doi.org/10.1109/MWSYM.2007.380295","url":null,"abstract":"This work demonstrates a low cost localized heating packaging method on liquid crystal polymer (LCP) for temperature sensitive devices such as the capacitive RF MEMS switch. Simulations of the heating element structures are performed to examine the thermal characteristics of the bonded regions and switch. Heating lines are fabricated on LCP using the copper cladding, requiring only one photolithography and etch step. The MEMS cavity is formed with two 1 mil layers of low-temp LCP that are etched with a CO2 laser system. The layers are bonded with localized-heating by passing 7 A of DC current through the heating element while compressing the 4 layers together. The bonded switch is submerged in 60degC water for 24 hours to test seal quality. Before and after measurements are shown, providing evidence of a successful bond.","PeriodicalId":213749,"journal":{"name":"2007 IEEE/MTT-S International Microwave Symposium","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122441007","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
Design of a Compact Microwave Six-port Vector Voltmeter for UWB Applications 用于超宽带应用的紧凑型微波六端口矢量电压表的设计
2007 IEEE/MTT-S International Microwave Symposium Pub Date : 2007-06-03 DOI: 10.1109/MWSYM.2007.380224
M. Bialkowski, A. Abbosh, J. Swayn
{"title":"Design of a Compact Microwave Six-port Vector Voltmeter for UWB Applications","authors":"M. Bialkowski, A. Abbosh, J. Swayn","doi":"10.1109/MWSYM.2007.380224","DOIUrl":"https://doi.org/10.1109/MWSYM.2007.380224","url":null,"abstract":"This paper presents the design of a compact and ultra wideband (UWB) planar six-port vector voltmeter. By performing only scalar power measurements, the proposed device is capable of determining the ratio of two complex voltages or two complex wave amplitudes over an ultra wide frequency band of 3.1 to 10.6 GHz. The vector voltmeter is formed by an assembly of three quadrature couplers and one out-of-phase power divider in multi-layer microstrip/slotline technology. Its UWB operation is confirmed by simulations and measurements.","PeriodicalId":213749,"journal":{"name":"2007 IEEE/MTT-S International Microwave Symposium","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122926070","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
A Ka-band Correlation Radiometer for Human Presence Detection from a Moving Platform 一种用于移动平台人体存在检测的ka波段相关辐射计
2007 IEEE/MTT-S International Microwave Symposium Pub Date : 2007-06-03 DOI: 10.1109/MWSYM.2007.380452
J. Nanzer, R. Rogers
{"title":"A Ka-band Correlation Radiometer for Human Presence Detection from a Moving Platform","authors":"J. Nanzer, R. Rogers","doi":"10.1109/MWSYM.2007.380452","DOIUrl":"https://doi.org/10.1109/MWSYM.2007.380452","url":null,"abstract":"A correlation radiometer developed for use in human presence detection is presented. This paper introduces a new use for radiometers in correlation mode to detect the presence of a standing human. Results are shown demonstrating effectiveness as a mobile detector mounted to a moving platform. A divergence from traditional correlation techniques is the application of angling the antennas inwards to range-gate the correlation response in order to reduce responses due to undesired background objects. Algorithms based on analyses of signal peaks reduce responses due to background objects in extremely cluttered environments while responses due to humans are relatively unaffected.","PeriodicalId":213749,"journal":{"name":"2007 IEEE/MTT-S International Microwave Symposium","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131119370","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
Characterization of Multi-Walled Carbon Nanotube (MWNT) Papers Using X-Band Waveguides 用x波段波导表征多壁碳纳米管(MWNT)纸
2007 IEEE/MTT-S International Microwave Symposium Pub Date : 2007-06-03 DOI: 10.1109/MWSYM.2007.380341
H. Xin, Lu Wang, D. Carnahan
{"title":"Characterization of Multi-Walled Carbon Nanotube (MWNT) Papers Using X-Band Waveguides","authors":"H. Xin, Lu Wang, D. Carnahan","doi":"10.1109/MWSYM.2007.380341","DOIUrl":"https://doi.org/10.1109/MWSYM.2007.380341","url":null,"abstract":"Multi-walled carbon nanotubes (MWNT) are characterized at X-band (8-12 GHz) by waveguide measurements. The scattering parameters (S-parameters) of thin MWNT papers containing a large ensemble of randomly oriented nanotubes are measured by a vector network analyzer. An extraction algorithm has been developed to compute the effective complex permittivity (epsiv = epsiv' - j epsiv\") and permeability (mu = mu' - j mu\") of the MWNT papers from the measured S-parameters. The extracted effective medium parameters are verified by finite-element simulations using Ansoft HFSS. The uncertainties for this characterization method are analyzed. The extracted conductivity of the MWNT papers is on the order of 1500 S/m and the dielectric constant is on the order of -500. No significant magnetic responses are observed. To overcome the relatively large uncertainty associated with the reflection coefficient Sll, the extracted imaginary permittivity (epsiv\") is fitted by the Drude model and the dielectric constant (epsiv') and permeability are recalculated.","PeriodicalId":213749,"journal":{"name":"2007 IEEE/MTT-S International Microwave Symposium","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131173323","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
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