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

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Injection-controlled charge pump and phased-locked loop array for beam-scanning in millimeter-wave automotive radar 用于毫米波汽车雷达波束扫描的注入控制电荷泵和锁相环阵列
2012 IEEE/MTT-S International Microwave Symposium Digest Pub Date : 2012-06-17 DOI: 10.1109/MWSYM.2012.6259506
M. Chia, S. Leong, S. Woon, Alda Mulya
{"title":"Injection-controlled charge pump and phased-locked loop array for beam-scanning in millimeter-wave automotive radar","authors":"M. Chia, S. Leong, S. Woon, Alda Mulya","doi":"10.1109/MWSYM.2012.6259506","DOIUrl":"https://doi.org/10.1109/MWSYM.2012.6259506","url":null,"abstract":"An injection-controlled method for charge pumped phase-locked loop (CP-PLL) has been developed for beam scanning in a 76–77 GHz automotive radar. It exploits an additional and external current source with the CP-PLL to control the voltage controlled oscillator in a production-ready SiGe front-end transceiver to create phase shift. A new 76 to 77 GHz phased array system has been implemented using this technique. The results from measurements and computer simulations validate its performance.","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":"85220629","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
A single-ended all-pass generalized negative-refractive-index transmission line using a bridged-T circuit 采用桥接t电路的单端全通广义负折射率传输线
2012 IEEE/MTT-S International Microwave Symposium Digest Pub Date : 2012-06-17 DOI: 10.1109/MWSYM.2012.6259660
C. G. Ryan, G. Eleftheriades
{"title":"A single-ended all-pass generalized negative-refractive-index transmission line using a bridged-T circuit","authors":"C. G. Ryan, G. Eleftheriades","doi":"10.1109/MWSYM.2012.6259660","DOIUrl":"https://doi.org/10.1109/MWSYM.2012.6259660","url":null,"abstract":"An all-pass microstrip generalized negative-refractive-index transmission line is presented. A very wide return loss bandwidth (1GHz – 8 GHz) is obtained while preserving the quad-band phase characteristics.","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":"82030605","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
Acoustic charge transport in graphene 石墨烯中的声波电荷输运
2012 IEEE/MTT-S International Microwave Symposium Digest Pub Date : 2012-06-17 DOI: 10.1109/MWSYM.2012.6259611
V. Mišeikis, J. Cunningham, K. Saeed, R. O’Rorke, A. Davies
{"title":"Acoustic charge transport in graphene","authors":"V. Mišeikis, J. Cunningham, K. Saeed, R. O’Rorke, A. Davies","doi":"10.1109/MWSYM.2012.6259611","DOIUrl":"https://doi.org/10.1109/MWSYM.2012.6259611","url":null,"abstract":"We present an experimental demonstration of acoustically induced current in graphene. CVD-grown layers of graphene were transferred to the surface of highly piezoelectric lithium niobate. This allowed integration of graphene with interdigital transducers used to generate and detect surface acoustic waves (SAWs). A continuous wave RF signal applied to the transducers at their resonant frequency generates a DC current flow, which has a linear dependence on the applied RF power and can be induced against an applied bias. These findings could provide the basis for new ways of studying electron transport in graphene.","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":"84517232","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
Results of field trials with wide-area ubiquitous network 广域泛在网络现场试验结果
2012 IEEE/MTT-S International Microwave Symposium Digest Pub Date : 2012-06-17 DOI: 10.1109/MWSYM.2012.6258344
Hitoshi Hayashi, O. Kagami, M. Harada
{"title":"Results of field trials with wide-area ubiquitous network","authors":"Hitoshi Hayashi, O. Kagami, M. Harada","doi":"10.1109/MWSYM.2012.6258344","DOIUrl":"https://doi.org/10.1109/MWSYM.2012.6258344","url":null,"abstract":"For the “Internet of Things,” wireless devices are required that have small size, long life, and long range communication capability. One technology that meets these requirements is the wide-area ubiquitous network. This paper reports the field trials conducted over three years; services were remote reading / remote control of gas meters and bicycle management (location estimation / radio reachability). The test results confirm that the network can well support remote monitoring service.","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":"84633357","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
Adaptive noise cancellation for two frequency radars using frequency doubling passive RF tags 基于倍频无源射频标签的双频雷达自适应噪声消除
2012 IEEE/MTT-S International Microwave Symposium Digest Pub Date : 2012-06-17 DOI: 10.1109/MWSYM.2012.6259694
Aditya Singh, V. Lubecke
{"title":"Adaptive noise cancellation for two frequency radars using frequency doubling passive RF tags","authors":"Aditya Singh, V. Lubecke","doi":"10.1109/MWSYM.2012.6259694","DOIUrl":"https://doi.org/10.1109/MWSYM.2012.6259694","url":null,"abstract":"The use of adaptive noise cancellation technique was explored in order to separate sources of motion for a two frequency Doppler radar system. Simulations and experiments were performed. The reference signal was obtained from a harmonic radar system using passive harmonic tags. The tag signal was effectively cancelled from data simultaneously obtained from a 2.45 GHz Doppler radar, facilitating the monitoring of un-tagged source of motion and providing reliable information about both motions.","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":"85463989","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
A comprehensive electrothermal GaN HEMT model including nonlinear thermal effects 一个包含非线性热效应的综合电热GaN HEMT模型
2012 IEEE/MTT-S International Microwave Symposium Digest Pub Date : 2012-06-17 DOI: 10.1109/MWSYM.2012.6259423
J. King, T. Brazil
{"title":"A comprehensive electrothermal GaN HEMT model including nonlinear thermal effects","authors":"J. King, T. Brazil","doi":"10.1109/MWSYM.2012.6259423","DOIUrl":"https://doi.org/10.1109/MWSYM.2012.6259423","url":null,"abstract":"A novel nonlinear high-power Gallium Nitride (GaN) High Electron-Mobility Transistor (HEMT) equivalent circuit model is described. Features of the model include a nonlinear thermal subnetwork extracted using straightforward measurement techniques, and a modified Angelov/Chalmers single function drain current equation. The model can very accurately predict the Pulsed IV (PIV) curves at different pulse widths and duty cycles from isothermal up to the safe-operating area (SOA) limit, with high voltage drain-source pulses. Large-signal one-tone-test results are presented and show good fidelity with measurements for the first three harmonics, as well as accurate prediction of bias point shifting with increasing input power.","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":"85469123","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
High power and efficiency power combining with multi-way TWTAs for satellite communications 高功率和高效率的电源与多路twta相结合，用于卫星通信
2012 IEEE/MTT-S International Microwave Symposium Digest Pub Date : 2012-06-17 DOI: 10.1109/MWSYM.2012.6259402
S. Dong, Yazhou Dong, Ying Wang, Liming Gong
{"title":"High power and efficiency power combining with multi-way TWTAs for satellite communications","authors":"S. Dong, Yazhou Dong, Ying Wang, Liming Gong","doi":"10.1109/MWSYM.2012.6259402","DOIUrl":"https://doi.org/10.1109/MWSYM.2012.6259402","url":null,"abstract":"A high efficiency power combining demonstration is presented in this paper of 4 K-band TWTAs based on magic-T corporate combiners. A low loss, amplitude and phase balanced, high power corporate magic-T combiner is designed. Power combining efficiencies of greater than 90% and output power of more than 340W over a 0.6 GHz frequency band are successfully demonstrated. Such hybrid junctions can also be considered as elements within a corporate combining architecture for much higher power generating for satellite communications or other industrial applications.","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":"82282543","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: 5
Development of a single board microwave sub-system based on substrate integrated waveguide (SIW) technology 基于衬底集成波导(SIW)技术的单板微波子系统的研制
2012 IEEE/MTT-S International Microwave Symposium Digest Pub Date : 2012-06-17 DOI: 10.1109/MWSYM.2012.6259473
Jixin Chen, W. Hong, Z. Hao, P. Yan, Xiaowei Zhu, Jianyi Zhou, Peng Chen, K. Wu
{"title":"Development of a single board microwave sub-system based on substrate integrated waveguide (SIW) technology","authors":"Jixin Chen, W. Hong, Z. Hao, P. Yan, Xiaowei Zhu, Jianyi Zhou, Peng Chen, K. Wu","doi":"10.1109/MWSYM.2012.6259473","DOIUrl":"https://doi.org/10.1109/MWSYM.2012.6259473","url":null,"abstract":"In this paper, a novel microwave planar integration scheme is proposed based on SIW technology. All the passive components in RF transceiver are implemented using SIW, including antenna, duplexer, TX/RX filters and LO power divider. A demonstration X-band transceiver is designed in a single layer printed circuit board. The design of SIW components and RF/IF circuits are discussed, as well as various aspects of system integration. To author's knowledge, this work is the first to demonstrate a fully integrated solution based on SIW-like technology.","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":"84003519","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
UWB time domain transmission sensor for free-space moisture measurements 用于自由空间湿度测量的UWB时域传输传感器
2012 IEEE/MTT-S International Microwave Symposium Digest Pub Date : 2012-06-17 DOI: 10.1109/MWSYM.2012.6258276
H. Mextorf, F. Daschner, M. Kent, R. Knochel
{"title":"UWB time domain transmission sensor for free-space moisture measurements","authors":"H. Mextorf, F. Daschner, M. Kent, R. Knochel","doi":"10.1109/MWSYM.2012.6258276","DOIUrl":"https://doi.org/10.1109/MWSYM.2012.6258276","url":null,"abstract":"This paper presents an UWB time domain transmission system for free-space moisture measurements. The system is capable of transmitting UWB signals having a bandwidth of several gigahertz which illuminate the samples. The size of the samples is in the range of some of the transmitted wavelengths and is smaller than the antennas' footprints. The scattered pulses are collected by an array of receiving antennas. The received signals can be sampled instantaneously with just one receiving channel and a special combiner, which adds a time shift to each antenna path in order to separate the signals in time. Multivariate calibration is applied in order to develop a statistical model for the moisture content of the samples. An accuracy for the determination of the moisture content of 0.61% is achieved while the range of moisture is varied from 1.7% to 20%.","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":"84083251","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
Simulation for microwave heating of catalysts for CO2 reduction to CO 微波加热CO2还原成CO催化剂的模拟
2012 IEEE/MTT-S International Microwave Symposium Digest Pub Date : 2012-06-17 DOI: 10.1109/MWSYM.2012.6259518
Thorsten Kayser, Andreas Melcher, G. Link, J. Jelonnek
{"title":"Simulation for microwave heating of catalysts for CO2 reduction to CO","authors":"Thorsten Kayser, Andreas Melcher, G. Link, J. Jelonnek","doi":"10.1109/MWSYM.2012.6259518","DOIUrl":"https://doi.org/10.1109/MWSYM.2012.6259518","url":null,"abstract":"Using the reverse water gas shift reaction (RWGS) one can produce carbon monoxide from carbon dioxide with the help of a catalyst. As the reaction is endothermic external energy in form of heat has to be applied. In the project CO2RRECT (CO2-Reaction using Regenerative Energies and Catalytic Technologies) [1], one task is to construct an applicator where the heating of the catalysts for the reaction is done by microwaves at a frequency of 2.45 GHz. This paper describes the simulation of such an applicator.","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":"80243734","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
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