2010 IEEE MTT-S International Microwave Symposium最新文献_第10页

A 3-5 GHz impulse radio UWB transceiver IC optimized for precision localization at longer ranges 一个3-5 GHz脉冲无线电超宽带收发器IC优化在更远距离的精确定位

2010 IEEE MTT-S International Microwave Symposium Pub Date : 2010-05-23 DOI: 10.1109/MWSYM.2010.5517396

J. Xia, C. Law, K. S. Koh, Yuan Zhou, Chao Fang

引用次数: 8

Behavioral modeling and digital predistortion of Power Amplifiers with memory using Two Hidden Layers Artificial Neural Networks 基于两隐层人工神经网络的记忆功率放大器行为建模与数字预失真

2010 IEEE MTT-S International Microwave Symposium Pub Date : 2010-05-23 DOI: 10.1109/MWSYM.2010.5517039

F. Mkadem, M. B. Ayed, S. Boumaiza, J. Wood, P. Aaen

{"title":"Behavioral modeling and digital predistortion of Power Amplifiers with memory using Two Hidden Layers Artificial Neural Networks","authors":"F. Mkadem, M. B. Ayed, S. Boumaiza, J. Wood, P. Aaen","doi":"10.1109/MWSYM.2010.5517039","DOIUrl":"https://doi.org/10.1109/MWSYM.2010.5517039","url":null,"abstract":"This paper presents a novel Two Hidden Layers Artificial Neural Networks (2HLANN) model for behavioral modeling and linearization of RF Power Amplifiers (PAs). Starting with a feedback loop principle model of a PA, an appropriate neural networks structure is deduced. This structure was then optimized to form a real valued and feed-forward 2HLANN based model capable of predicting the nonlinear behavior and the memory effects of wideband PAs. The validation of the proposed model in mimicking the behavior of a Device Under Test (DUT) is carried out in terms of its accuracy in predicting the output spectrum, dynamic AM/AM and AM/PM characteristics and the normalized mean square error. In addition, the 2HLANN model was used to linearize two 250 Watt peak-envelope-power Doherty PAs (DPAs) driven with 20 MHz bandwidth signals. The linearization of these DPAs using the 2HLANN enabled attaining an output power of up to 46.8 dBm and an average efficiency of up to 47.5% coupled with an Adjacent Channel Power Ratio higher than 50 dBc. When compared to a number of previously published behavioral and DPD schemes, the 2HLANN model demonstrated an excellent modeling accuracy and linearization capability.","PeriodicalId":341557,"journal":{"name":"2010 IEEE MTT-S International Microwave Symposium","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133666345","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

Geometric characteristics, physical mechanism, and electrical analysis of quasi-TEM waveguides with dipole-FSS walls 具有偶极子- fss壁的准tem波导的几何特性、物理机理和电学分析

2010 IEEE MTT-S International Microwave Symposium Pub Date : 2010-05-23 DOI: 10.1109/MWSYM.2010.5514699

Duochuan Li, K. Wu

引用次数: 5

Switch-controlled multi-octave bandwidth radial power divider/combiner 开关控制的多倍频宽径向功率分配器/合并器

2010 IEEE MTT-S International Microwave Symposium Pub Date : 2010-05-23 DOI: 10.1109/MWSYM.2010.5518214

Young-Pyo Hong, D. Kimball, J. Yook, P. Asbeck, L. Larson

引用次数: 2

Low cost electronically scanned arrays based on surface mount active antennas FS-4 基于表面贴装有源天线FS-4的低成本电子扫描阵列

2010 IEEE MTT-S International Microwave Symposium Pub Date : 2010-05-23 DOI: 10.1109/MWSYM.2010.5515000

M. Sánchez-Barbetty, R. Jackson

引用次数: 2

A C-band GaAs-pHEMT MMIC low phase noise VCO for space applications using a new cyclostationary nonlinear noise model 采用新的循环平稳非线性噪声模型的c波段GaAs-pHEMT MMIC低相位噪声压控振荡器

2010 IEEE MTT-S International Microwave Symposium Pub Date : 2010-05-23 DOI: 10.1109/MWSYM.2010.5515080

C. Florian, P. Traverso, M. Feudale, F. Filicori

{"title":"A C-band GaAs-pHEMT MMIC low phase noise VCO for space applications using a new cyclostationary nonlinear noise model","authors":"C. Florian, P. Traverso, M. Feudale, F. Filicori","doi":"10.1109/MWSYM.2010.5515080","DOIUrl":"https://doi.org/10.1109/MWSYM.2010.5515080","url":null,"abstract":"This paper describes the design and implementation of a C-band MMIC VCO developed in the framework of activities oriented to the improvement of products for space applications. The circuit exploits a single device with a microstrip integrated resonator coupled with varactors. The exploited technology is a space-qualified GaAs 0.25-um pHEMT process. The MMIC exhibits 350-MHz bandwidth at 7.3 GHz, with 14 dBm output power and −86 dBc/Hz single side-band phase noise at 100 kHz from the carrier. Measured performances are in good agreement with simulations. The active device adopted for the design was characterized in terms of both low-frequency noise in quiescent bias-dependent operation and its up-conversion into phase noise under large-signal RF oscillating conditions, using in-house developed measurement setups. A new compact nonlinear noise model was identified, implemented and exploited for phase noise simulations. The model features cyclostationary equivalent noise generators. Comparisons between measurements and simulations show that the nonlinear cyclostationary modeling approach is more accurate than conventional noise models in oscillator phase noise analyses of pHEMT based circuits.","PeriodicalId":341557,"journal":{"name":"2010 IEEE MTT-S International Microwave Symposium","volume":"309 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133705674","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

Advanced architecture for a low cost Multifunction Phased Array Radar 低成本多功能相控阵雷达的先进架构

2010 IEEE MTT-S International Microwave Symposium Pub Date : 2010-05-23 DOI: 10.1109/MWSYM.2010.5517661

J. Herd, S. Duffy, M. Weber, G. Brigham, C. Weigand, D. Cursio

引用次数: 22

Robust multi-fidelity simulation-driven design optimization of microwave structures 鲁棒多保真度仿真驱动微波结构设计优化

2010 IEEE MTT-S International Microwave Symposium Pub Date : 2010-05-23 DOI: 10.1109/MWSYM.2010.5516859

S. Koziel, S. Ogurtsov

引用次数: 36

Active simultaneous harmonic source and load pull assisted by local polyharmonic distortion models 局部多谐失真模型辅助下的有源同步谐波和负载拉

2010 IEEE MTT-S International Microwave Symposium Pub Date : 2010-05-23 DOI: 10.1109/MWSYM.2010.5516051

R. Leoni, S. Harris, David G. Ries

引用次数: 6

THz electronics projects at DARPA: Transistors, TMICs, and amplifiers DARPA的太赫兹电子项目:晶体管、tmic和放大器

2010 IEEE MTT-S International Microwave Symposium Pub Date : 2010-05-23 DOI: 10.1109/MWSYM.2010.5517258

John D. Albrecht, M. Rosker, H. Bruce Wallace, Tsu-Hsi Chang

引用次数: 47