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A high-power dual-gate GaN switching-amplifier in the GHz-range 一种ghz范围的大功率双栅GaN开关放大器
WAMICON 2011 Conference Proceedings Pub Date : 2011-04-18 DOI: 10.1109/WAMICON.2011.5872895
S. Heck, A. Brackle, M. Berroth, S. Maroldt, R. Quay
{"title":"A high-power dual-gate GaN switching-amplifier in the GHz-range","authors":"S. Heck, A. Brackle, M. Berroth, S. Maroldt, R. Quay","doi":"10.1109/WAMICON.2011.5872895","DOIUrl":"https://doi.org/10.1109/WAMICON.2011.5872895","url":null,"abstract":"A high efficient GaN switch-mode amplifier for Gbit data rates is presented. The design uses GaN HEMTs with a gate length of 250 nm. It consists of a dual-gate transistor configuration in the output stage. This allows an increase of supply voltage in order to increase the output power. If an increase of power is not required, device size can be reduced which comes along with a better RF-performance. The presented amplifier exhibits an output signal with peak-to-peak voltages up to 60 V and achieves a broadband output power of 17 W with a PAE of 79.5 % at 0.9 Gbps. Considering a bit rate of 5.2 Gbps, the corresponding values are 40 V, 4 W and 38.6 %. To the authors knowledge, the presented amplifier is the first GaN switch-mode amplifier with a dual-gate transistor in the output stage. Its measured results are the best concerning the combination of a high frequency and a high power at the same time.","PeriodicalId":253374,"journal":{"name":"WAMICON 2011 Conference Proceedings","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130022801","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
Effect of the connectivity on the performance of Cooperative Network Coding 网络连通性对协同网络编码性能的影响
WAMICON 2011 Conference Proceedings Pub Date : 2011-04-18 DOI: 10.1109/WAMICON.2011.5872893
G. Arrobo, R. Gitlin
{"title":"Effect of the connectivity on the performance of Cooperative Network Coding","authors":"G. Arrobo, R. Gitlin","doi":"10.1109/WAMICON.2011.5872893","DOIUrl":"https://doi.org/10.1109/WAMICON.2011.5872893","url":null,"abstract":"Cooperative Network Coding is a novel technology that synergistically integrates Network Coding with cluster-based Cooperative Communications to produce enhanced network reliability and security features, while improving the throughput. In this paper, we consider the effect of the connectivity on the performance of wireless sensor networks using Cooperative Network Coding, and we present scenarios where the values of the connectivity optimize the throughput. Generally, Cooperative Network Coding provides its optimal throughput when the number of nodes in the first cluster connected to the source node is equal to the number of source packets, the number of nodes in cluster i+1 connected to the node (i, j) is at least 4 and the destination node is connected to all the nodes in the last cluster. However, if for any reason the connectivity of nodes between two adjacent clusters is reduced, Cooperative Network Coding can increase its performance by connecting all the nodes in the first cluster to the source node.","PeriodicalId":253374,"journal":{"name":"WAMICON 2011 Conference Proceedings","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128233640","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
GPS data analysis and acquisition software over IP platform 基于IP平台的GPS数据分析与采集软件
WAMICON 2011 Conference Proceedings Pub Date : 2011-04-18 DOI: 10.1109/WAMICON.2011.5872906
H. R. Chamorro, A. M. Cruz, F. Nino, R. Ferro., E. Gomez, E. Cantor
{"title":"GPS data analysis and acquisition software over IP platform","authors":"H. R. Chamorro, A. M. Cruz, F. Nino, R. Ferro., E. Gomez, E. Cantor","doi":"10.1109/WAMICON.2011.5872906","DOIUrl":"https://doi.org/10.1109/WAMICON.2011.5872906","url":null,"abstract":"This paper presents an innovative acquisition, analysis and processing software for many GPS data bit streams provided from an electronic receiver, it is able to extract a great variety of information remotely and make possible monitoring it from Internet using IP. Some other technologies are needed on this application such a web server and ZigBee antennas in order to test the platform performance in a homing robot. The graphical interface design presented describes what data are acquired. Finally the results confirm the GPS location according the dispersion index in real time.","PeriodicalId":253374,"journal":{"name":"WAMICON 2011 Conference Proceedings","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126759103","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
Joint circuit and system evaluation of nonlinear compensation in RF/Microwave front-ends 射频/微波前端非线性补偿联合电路及系统评估
WAMICON 2011 Conference Proceedings Pub Date : 2011-04-18 DOI: 10.1109/WAMICON.2011.5872854
Farasat Munir, M. Omer, M. Masood, J. Kenney
{"title":"Joint circuit and system evaluation of nonlinear compensation in RF/Microwave front-ends","authors":"Farasat Munir, M. Omer, M. Masood, J. Kenney","doi":"10.1109/WAMICON.2011.5872854","DOIUrl":"https://doi.org/10.1109/WAMICON.2011.5872854","url":null,"abstract":"With the ongoing theme of software-defined-radios and the development of nonlinear theory, there is a large variety of PA architectures and predistortion techniques available. Each of the amplifier architectures responds in a unique way to the attempts at its linearization through predistortion. The traditional attempts at evaluation of linearization performance have to work with the amplifier models and enact linearization algorithms based on them. The idea of co-simulating circuits and algorithms for linearization has been picking off recently in most part due to the ever tightening specifications of communication standards. In this work, we look at the problem of co-simulating a linearization system with circuits and signal processing algorithms. The ultimate goal is to provide a full characterization system to act as a linearization test-bed with circuit level simulations and complete signal processing algorithms. This paper provides the first few steps in that direction by yoking together the two most widely used tools of circuits and systems simulation.","PeriodicalId":253374,"journal":{"name":"WAMICON 2011 Conference Proceedings","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129079124","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
Optimum wireless power transmission from air to lossy media 从空气到有损媒体的最佳无线电力传输
WAMICON 2011 Conference Proceedings Pub Date : 2011-04-18 DOI: 10.1109/WAMICON.2011.5872881
Shan Jiang, S. Georgakopoulos
{"title":"Optimum wireless power transmission from air to lossy media","authors":"Shan Jiang, S. Georgakopoulos","doi":"10.1109/WAMICON.2011.5872881","DOIUrl":"https://doi.org/10.1109/WAMICON.2011.5872881","url":null,"abstract":"Wireless communications for sensors embedded in lossy media are studied here. Our analytical formulations rely on the plane wave propagation models, and focus on calculating the transmission loss and propagation loss of RF waves penetrating various media. Our results illustrate the existence of optimum frequencies for RF communications with sensors inside fresh water, soil and concrete, while providing minimum power transmission attenuation and the maximum propagation depth.","PeriodicalId":253374,"journal":{"name":"WAMICON 2011 Conference Proceedings","volume":"157 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132805858","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
Wireless power transmission to sensors embedded in concrete via Magnetic Resonance 无线电力传输到嵌入在混凝土中的传感器通过磁共振
WAMICON 2011 Conference Proceedings Pub Date : 2011-04-18 DOI: 10.1109/WAMICON.2011.5872857
O. Jonah, S. Georgakopoulos
{"title":"Wireless power transmission to sensors embedded in concrete via Magnetic Resonance","authors":"O. Jonah, S. Georgakopoulos","doi":"10.1109/WAMICON.2011.5872857","DOIUrl":"https://doi.org/10.1109/WAMICON.2011.5872857","url":null,"abstract":"The feasibility of efficient wireless power transfer through Strongly Coupled Magnetic Resonance (SCMR) in non-homogenous interface such as air-concrete is studied here. Specifically, the efficiency of wireless power transmission from a source in air to a sensor embedded in concrete via strongly coupled magnetic resonance is analyzed. The concrete material is modeled for various humidity levels using the extended Debye's model. The efficiency of the SCMR is also analyzed for various depths inside the concrete.","PeriodicalId":253374,"journal":{"name":"WAMICON 2011 Conference Proceedings","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131290699","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: 27
Transmission improvement of UMTS and Wi-Fi signals through energy saving glass using FSS 利用FSS改善UMTS和Wi-Fi信号通过节能玻璃的传输
WAMICON 2011 Conference Proceedings Pub Date : 2011-04-18 DOI: 10.1109/WAMICON.2011.5872858
I. Ullah, Xiaoli Zhao, D. Habibi, G. Kiani
{"title":"Transmission improvement of UMTS and Wi-Fi signals through energy saving glass using FSS","authors":"I. Ullah, Xiaoli Zhao, D. Habibi, G. Kiani","doi":"10.1109/WAMICON.2011.5872858","DOIUrl":"https://doi.org/10.1109/WAMICON.2011.5872858","url":null,"abstract":"This paper presents a dual-bandpass (DBP) frequency selective surface (FSS) based on hard-coating energy saving glass (ESG). The objective of this study is to generate a novel design of FSS on ESG, which is to be used for future energy smart buildings at Edith Cowan University (ECU). The ESG is made of a transparent coating of conducting layer on glass substrate, which attenuates infrared (IR) radiations for energy saving purpose. However the coating also attenuates useful UMTS and Wi-Fi signals which are necessary for the communication systems within the University. FSS technique is used to improve transmission of RF/MW signals through ESG by generating an array of patterns in the hard coating layer. The design of the DBP-FSS presented here has achieved transmission requirements for two specific frequency bands, with stable frequency response for both transverse electric (TE) and transverse magnetic (TM) polarization at normal and oblique incidence angles up to 60°. The double square loop (DSL)-FSS sustains 92.7% efficiency of ESG by attenuating IR radiations. This design methodology can be adapted as a general reference, which is suitable for applications under similar circumstances. Optimized design and theoretical results are presented.","PeriodicalId":253374,"journal":{"name":"WAMICON 2011 Conference Proceedings","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122508784","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: 32
A load-pull-based behavioral model for Doherty PA design 基于荷载-拉力的Doherty PA设计行为模型
WAMICON 2011 Conference Proceedings Pub Date : 2011-04-18 DOI: 10.1109/WAMICON.2011.5872868
M. Marbell, M. Simcoe, Ronald E. Wilson, M. Chidurala, S. Ward
{"title":"A load-pull-based behavioral model for Doherty PA design","authors":"M. Marbell, M. Simcoe, Ronald E. Wilson, M. Chidurala, S. Ward","doi":"10.1109/WAMICON.2011.5872868","DOIUrl":"https://doi.org/10.1109/WAMICON.2011.5872868","url":null,"abstract":"A fundamental-only behavioral model is extracted from DUT-level swept power load-pull data that is capable of accurately predicting output power, gain and efficiency of high power RF transistors as a function of input drive level, load impedances, frequency and gate bias. The model is implemented with a sub-set of the X-parameter components and is easily ported to modern CAD tools as an X-parameter file. It provides a convenient method for evaluating the performance of RF power transistors in different Doherty PA architectures and can be used to design and optimize matching network, phasing lines and dynamic load modulation for efficient Doherty operation. The model was used to design a symmetric LDMOS DPA with first-pass success, that achieved 55% drain efficiency at average power of 45dBm with 62dBc ACPR after DPD correction using a 4-C GSM, 6.2dB PAR signal at 1.842GHz.","PeriodicalId":253374,"journal":{"name":"WAMICON 2011 Conference Proceedings","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124921722","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: 7
A 20 W GaN HEMT VHF/UHF Class-D power amplifier 20w GaN HEMT VHF/UHF d类功率放大器
WAMICON 2011 Conference Proceedings Pub Date : 2011-04-18 DOI: 10.1109/WAMICON.2011.5872897
Song Lin, A. Fathy
{"title":"A 20 W GaN HEMT VHF/UHF Class-D power amplifier","authors":"Song Lin, A. Fathy","doi":"10.1109/WAMICON.2011.5872897","DOIUrl":"https://doi.org/10.1109/WAMICON.2011.5872897","url":null,"abstract":"A 50 to 550 MHz wideband gallium nitride (GaN) HEMT power amplifier with over 20 W output power and 63% drain efficiency has been successfully developed. The demonstrated wideband power amplifier utilizes two GaN HEMTs and operates in a push-pull voltage mode Class D (VMCD). The design is based on a large signal simulation to optimize the power amplifier's output power and efficiency. To assure a wideband operation, a coaxial line impedance transformer has been used as part of the input matching network; meanwhile, a wideband a 1∶1 ferrite loaded balun and low pass filters are utilized on the amplifier's output side instead of the conventional serial harmonic termination.","PeriodicalId":253374,"journal":{"name":"WAMICON 2011 Conference Proceedings","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127930962","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
Advanced diamond based metal matrix composites for thermal management of RF devices 用于射频器件热管理的先进金刚石基金属基复合材料
WAMICON 2011 Conference Proceedings Pub Date : 2011-04-18 DOI: 10.1109/WAMICON.2011.5872860
K. Loutfy, H. Hirotsuru
{"title":"Advanced diamond based metal matrix composites for thermal management of RF devices","authors":"K. Loutfy, H. Hirotsuru","doi":"10.1109/WAMICON.2011.5872860","DOIUrl":"https://doi.org/10.1109/WAMICON.2011.5872860","url":null,"abstract":"GaN based RF devices are pushing the threshold on existing thermal management materials. High heat fluxes and the need for a heat spreader material with low CTE that is a close match to the device material (e.g. Silicon Carbide) is driving the need for higher thermal conductivity (>450W/mK) solutions. Aluminum diamond has been developed to meet this need with a CTE of 7.5ppm/K and thermal conductivity of 500W/mK.","PeriodicalId":253374,"journal":{"name":"WAMICON 2011 Conference Proceedings","volume":"92 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116746795","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
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