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2009 IEEE 10th Annual Wireless and Microwave Technology Conference最新文献

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Study of a polar sigma-delta transmitter associated to a high efficiency switched mode power amplifier for mobile WiMax 与移动WiMax高效率开关模式功率放大器相关联的极性sigma-delta发射机的研究
2009 IEEE 10th Annual Wireless and Microwave Technology Conference Pub Date : 2009-04-20 DOI: 10.1109/WAMICON.2009.5207294
F. Robert, Martha L. Suarez P., A. Diet, M. Villegas, G. Baudoin
{"title":"Study of a polar sigma-delta transmitter associated to a high efficiency switched mode power amplifier for mobile WiMax","authors":"F. Robert, Martha L. Suarez P., A. Diet, M. Villegas, G. Baudoin","doi":"10.1109/WAMICON.2009.5207294","DOIUrl":"https://doi.org/10.1109/WAMICON.2009.5207294","url":null,"abstract":"This paper presents the analysis and simulation of a high efficiency transmitter combining a polar sigma-delta modulator and a high efficiency amplifier. This study is carried out considering high PAPR (Peak to Average Power Ratio) mobile WiMax signals. Due to its high efficiency, the Class E amplifier was chosen. Performances and behavior of the designed amplifier were validated through simulations. In a second step the amplifier was associated to the polar transmitter to analyze the overall performances. Results confirm the challenges of transmitting high PAPR signals. Perspectives encourage the possibilities of providing efficient power amplification using a polar ΣΔ architecture.","PeriodicalId":132141,"journal":{"name":"2009 IEEE 10th Annual Wireless and Microwave Technology Conference","volume":"115 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127518726","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
Modeling, simulation, testing, and measurements of wireless communication systems: A laboratory based approach 无线通信系统的建模、仿真、测试和测量:基于实验室的方法
2009 IEEE 10th Annual Wireless and Microwave Technology Conference Pub Date : 2009-04-20 DOI: 10.1109/WAMICON.2009.5207233
Sabih Guzelgoz, H. Arslan
{"title":"Modeling, simulation, testing, and measurements of wireless communication systems: A laboratory based approach","authors":"Sabih Guzelgoz, H. Arslan","doi":"10.1109/WAMICON.2009.5207233","DOIUrl":"https://doi.org/10.1109/WAMICON.2009.5207233","url":null,"abstract":"Several challenges such as inter-operability, global seamless connectivity, and spectral crowding became more of a concern after the tremendous growth in wireless industry and the diversity in wireless systems and standards. Software defined radio (SDR) is envisioned to be a promising solution for all these challenges. From the point of education, all these challenges along with the introduction of new concepts such as SDR necessitate the establishment of new platforms where students can model, simulate and test wireless systems from various aspects. This paper gives an overview of a laboratory course incorporating the use of SDR capable devices. A brief description of all the laboratory experiments is included, whereas only one of the experiments focusing on synchronization in wireless systems is discussed in detail due to space limitations.","PeriodicalId":132141,"journal":{"name":"2009 IEEE 10th Annual Wireless and Microwave Technology Conference","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130826322","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
Bandwidth enhancement for patch antenna using PBG slot structure for 5, 6 and 9 GHz applications 基于PBG槽结构的贴片天线在5,6和9ghz应用中的带宽增强
2009 IEEE 10th Annual Wireless and Microwave Technology Conference Pub Date : 2009-04-20 DOI: 10.1109/WAMICON.2009.5207267
H. Abutarboush, H. Al-Raweshidy, R. Nilavalan
{"title":"Bandwidth enhancement for patch antenna using PBG slot structure for 5, 6 and 9 GHz applications","authors":"H. Abutarboush, H. Al-Raweshidy, R. Nilavalan","doi":"10.1109/WAMICON.2009.5207267","DOIUrl":"https://doi.org/10.1109/WAMICON.2009.5207267","url":null,"abstract":"A design strategy using Photonic Band Gap (PBG) structure on ground plane to achieve wider bandwidth for patch antenna is presented. It is found that, the impedance bandwidth has improved from 3.72% to 31.9 % at centre frequency 9 GHz after adding PBG on the ground plane. The antenna has multi band operations at 5, 6 and 9 GHz. E-Plane and H-plane radiation patter is satisfied within this bands.","PeriodicalId":132141,"journal":{"name":"2009 IEEE 10th Annual Wireless and Microwave Technology Conference","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121110831","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
RF/wireless engineering - a core discipline for the mobile internet 射频/无线工程-移动互联网的核心学科
2009 IEEE 10th Annual Wireless and Microwave Technology Conference Pub Date : 2009-04-20 DOI: 10.1109/WAMICON.2009.5207231
J. Laskar
{"title":"RF/wireless engineering - a core discipline for the mobile internet","authors":"J. Laskar","doi":"10.1109/WAMICON.2009.5207231","DOIUrl":"https://doi.org/10.1109/WAMICON.2009.5207231","url":null,"abstract":"RF and Wireless engineering has roots which date back to the early 20th century. Since those early years, wireless engineering has come a long way. Most of the basic principles of the sophisticated radio architecture, as we see it today, were developed using vacuum tubes around 1930. Starting with the basic foundation provided by Maxwell (1883), and with subsequent inventions in wave propagation and wireless telegraphy by Hertz, Marconi, and others, wireless technology was born around 1900 in a very primitive form. Demonstration of a superheterodyne receiver by Armstrong dates back to as early as 1924. A major milestone was set by the invention of the transistor by Bardeen, Brattain, and Schockley in 1948, which changed the world of vacuum tubes.","PeriodicalId":132141,"journal":{"name":"2009 IEEE 10th Annual Wireless and Microwave Technology Conference","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121388838","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
5-GHz low-phase noise quadrature VCO in 0.13−μm RF CMOS process technology 采用0.13 μm RF CMOS工艺技术的5ghz低相位噪声正交压控振荡器
2009 IEEE 10th Annual Wireless and Microwave Technology Conference Pub Date : 2009-04-20 DOI: 10.1109/WAMICON.2009.5207300
S. Zafar, M. Awan, T. Zulkifli
{"title":"5-GHz low-phase noise quadrature VCO in 0.13−μm RF CMOS process technology","authors":"S. Zafar, M. Awan, T. Zulkifli","doi":"10.1109/WAMICON.2009.5207300","DOIUrl":"https://doi.org/10.1109/WAMICON.2009.5207300","url":null,"abstract":"In this paper, a 5 GHz low-phase noise RF CMOS quadrature voltage controlled oscillator (QVCO) is presented. The quadrature signals are generated by coupling two VCOs through pMOS coupling transistors. The tail biasing MOS current mirror is replaced with tail biasing resistor of 100Ω multifingers gate structure of pMOS varactor (3.125 μm width of each gate finger) and source damping resistor of 40 are the techniques which are used to achieve low phase noise in proposed QVCO. The pMOS varactor releases the frequency tuning range of 5.26 % from the center frequency of 5.13 GHz. The proposed QVCO core power dissipation is 3.7 mW from 1.2 V dc power supply. The QVCO exhibits the measured phase noise of –118.24 dBc/Hz at the offset frequency of 1 MHz. The calculated figure of merit is –186.7. The proposed QVCO is implemented utilizing 0.13 µm 1 poly 8 metal RF CMOS process technology.","PeriodicalId":132141,"journal":{"name":"2009 IEEE 10th Annual Wireless and Microwave Technology Conference","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126314626","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
Three dimensional micromachining for millimeter-wave circuits 毫米波电路的三维微加工
2009 IEEE 10th Annual Wireless and Microwave Technology Conference Pub Date : 2009-04-20 DOI: 10.1109/WAMICON.2009.5207246
J. R. Reid, V. Vasilyev, R. T. Webster
{"title":"Three dimensional micromachining for millimeter-wave circuits","authors":"J. R. Reid, V. Vasilyev, R. T. Webster","doi":"10.1109/WAMICON.2009.5207246","DOIUrl":"https://doi.org/10.1109/WAMICON.2009.5207246","url":null,"abstract":"Recent advances in three dimensional metal micromachining processes provide new opportunities for millimeter-wave circuit fabrication. Using these processes, enclosed transmission lines can operate to frequencies over 200 GHz, have very low crosstalk, and be routed arbitrarily. These processes also allow the integration of resonators with quality factors in excess of 500 allowing low loss filters to be fabricated at the same time as the transmission lines. Finally, the precision of the processes allows the design and realization of passive components such as cross-overs and couplers. The further development of these processes will enable highly integrated millimeter-wave systems.","PeriodicalId":132141,"journal":{"name":"2009 IEEE 10th Annual Wireless and Microwave Technology Conference","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126739997","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
Behavioral modeling for polar transmitters 极性发射机行为建模
2009 IEEE 10th Annual Wireless and Microwave Technology Conference Pub Date : 2009-04-20 DOI: 10.1109/WAMICON.2009.5207250
J. Kenney
{"title":"Behavioral modeling for polar transmitters","authors":"J. Kenney","doi":"10.1109/WAMICON.2009.5207250","DOIUrl":"https://doi.org/10.1109/WAMICON.2009.5207250","url":null,"abstract":"In this paper, we have shown that behavioral modeling is an important tool for not only predicting PA distortion performance, but is also indispensable for correcting such signal degradation in the transmit path. Digital pre-D has proven to be an effective means to suppress ACPR in base station applications, but is too costly and complex for mobile applications. Mobile PA architectures are increasing utilizing polar transmitter architectures to improve efficiency for digitally modulated signals. We have shown that the combination of polar architectures combined with digital pre-D allows high efficiency operation while still achieving adequate distortion performance. Future work will include development of multiple-input/mulitiple output (MIMO) transmitters for use in mobile platforms.","PeriodicalId":132141,"journal":{"name":"2009 IEEE 10th Annual Wireless and Microwave Technology Conference","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126634512","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
WAMICON 2009 IEEE Wireless and Microwave Technology Conference WAMICON 2009 IEEE无线与微波技术会议
2009 IEEE 10th Annual Wireless and Microwave Technology Conference Pub Date : 1900-01-01 DOI: 10.1109/wamicon.2009.5207315
U. Rohde
{"title":"WAMICON 2009 IEEE Wireless and Microwave Technology Conference","authors":"U. Rohde","doi":"10.1109/wamicon.2009.5207315","DOIUrl":"https://doi.org/10.1109/wamicon.2009.5207315","url":null,"abstract":"","PeriodicalId":132141,"journal":{"name":"2009 IEEE 10th Annual Wireless and Microwave Technology Conference","volume":"45 8","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121016346","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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