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Wideband Envelope Modulator Design for Wideband Power Amplifiers 宽带功率放大器的宽带包络调制器设计
2008 38th European Microwave Conference Pub Date : 2008-10-27 DOI: 10.1109/EUMC.2008.4751797
Jiafeng Zhou, Li Wang, K. Morris
{"title":"Wideband Envelope Modulator Design for Wideband Power Amplifiers","authors":"Jiafeng Zhou, Li Wang, K. Morris","doi":"10.1109/EUMC.2008.4751797","DOIUrl":"https://doi.org/10.1109/EUMC.2008.4751797","url":null,"abstract":"A wideband and high-efficiency envelope modulator is proposed for envelope tracking and envelope elimination and restoration transmitters. The modulator can achieve a power added efficiency of 80% for the envelope of WLAN 802.11a/g signal. The modulator is tested with a high efficiency power amplifier. In the transmitter, the phase signal fed into the power amplifier is modulated by the clipped envelope signal. This relaxes the critical time alignment requirement between the envelope and the phase signal paths in a traditional envelope elimination and restoration transmitter. As a result, the transmitter can achieve an overall PAE of 34.3% while complying with the WLAN 802.11a/g spectrum mask.","PeriodicalId":308339,"journal":{"name":"2008 38th European Microwave Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128464425","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
Analysis of the Frequency Locking Region of Coupled Oscillators Applied to 1-D Antenna Arrays 一维天线阵列耦合振荡器锁频区分析
2008 38th European Microwave Conference Pub Date : 2008-10-27 DOI: 10.1109/EUMC.2008.4751710
N.Y. Tohme, J. Paillot, D. Cordeau, P. Coirault
{"title":"Analysis of the Frequency Locking Region of Coupled Oscillators Applied to 1-D Antenna Arrays","authors":"N.Y. Tohme, J. Paillot, D. Cordeau, P. Coirault","doi":"10.1109/EUMC.2008.4751710","DOIUrl":"https://doi.org/10.1109/EUMC.2008.4751710","url":null,"abstract":"During the past decade, coupled oscillators have shown their efficiency as simple methods for phase control in microwave antenna arrays, and hence as alternatives to conventional electronic beam steering methods. In this paper, a new writing of the nonlinear equations proposed by R. York to describe the oscillators locked states is presented. This has allowed the elaboration of a CAD tool which provides, in a considerably short simulation time, the frequency locking region of the coupled oscillators. This region is plotted versus the oscillators' tunings referred to the resonant frequency of the coupling circuit. A prototype circuit consisting of a five oscillators array is currently under test to validate the theory.","PeriodicalId":308339,"journal":{"name":"2008 38th European Microwave Conference","volume":"52 7","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131776531","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
Kalman filtering algorithm for on-line memory polynomial predistortion 在线记忆多项式预失真的卡尔曼滤波算法
2008 38th European Microwave Conference Pub Date : 2008-10-27 DOI: 10.1109/EUMC.2008.4751517
M. Djamai, S. Bachir, C. Duvanaud
{"title":"Kalman filtering algorithm for on-line memory polynomial predistortion","authors":"M. Djamai, S. Bachir, C. Duvanaud","doi":"10.1109/EUMC.2008.4751517","DOIUrl":"https://doi.org/10.1109/EUMC.2008.4751517","url":null,"abstract":"A new adaptive technique for digital predistortion is presented. The proposed method uses the real-time digital processing of baseband signals to compensate the nonlinearities and memory effects in radio-frequency power amplifier. Kalman filtering algorithm with sliding time-window is adapted to track the changes in the PA characteristics. Simulation and measurement results, using digital signal processing, are presented for multicarrier signals to demonstrate the effectiveness of this new approach.","PeriodicalId":308339,"journal":{"name":"2008 38th European Microwave Conference","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134189315","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: 8
Band Reject Filter in BAW Technology BAW技术中的带阻滤波器
2008 38th European Microwave Conference Pub Date : 2008-10-27 DOI: 10.1109/EUMC.2008.4751460
L. Mourot, P. Bar, S. Bila, G. Parat, P. Ancey, J. Carpentier
{"title":"Band Reject Filter in BAW Technology","authors":"L. Mourot, P. Bar, S. Bila, G. Parat, P. Ancey, J. Carpentier","doi":"10.1109/EUMC.2008.4751460","DOIUrl":"https://doi.org/10.1109/EUMC.2008.4751460","url":null,"abstract":"This document shows the feasibility of a band reject filter in Bulk Acoustic Wave (BAW) technology. This type of filter is usually composed of series and shunt resonators. We present two setups centred at 2.5 GHz which measurement is agreed with simulation for rejection band. Filters give a -20 dB rejection on a bandwidth greater than 60 MHz for each topology. The best measured filter achieves a -1.4 dB insertion loss in the passband with a 200 MHz bandwidth.","PeriodicalId":308339,"journal":{"name":"2008 38th European Microwave Conference","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116039029","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
Millimeter Wave Devices Based on a 3-D Electromagnetic Band Gap Crystal Manufactured by Layer-By-Layer Ceramic Stereolithography 基于三维电磁带隙晶体的毫米波器件的逐层陶瓷立体光刻
2008 38th European Microwave Conference Pub Date : 2008-10-27 DOI: 10.1109/EUMC.2008.4751511
N. Delhote, D. Baillargeat, S. Verdeyme, C. Delage, C. Chaput
{"title":"Millimeter Wave Devices Based on a 3-D Electromagnetic Band Gap Crystal Manufactured by Layer-By-Layer Ceramic Stereolithography","authors":"N. Delhote, D. Baillargeat, S. Verdeyme, C. Delage, C. Chaput","doi":"10.1109/EUMC.2008.4751511","DOIUrl":"https://doi.org/10.1109/EUMC.2008.4751511","url":null,"abstract":"A 3D Electromagnetic band gap layer-by-layer crystal is studied in the millimeter wave domain. It has been designed and manufactured by 3D ceramic stereolithography with the ceramic material called zircon. Its particular properties have been used to design a high unloaded quality factor cavity (structural defect) localized within this crystal. This cavity has been measured at 30.5 GHz to demonstrate the concept in the millimeter wave domain. This resonant defect has also theoretically been studied while considering a low loss ceramic material such as BZT. It shows that an unloaded Q close to 10 000 can be obtained at this frequency.","PeriodicalId":308339,"journal":{"name":"2008 38th European Microwave Conference","volume":"327 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115885289","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
Modeling and identification of continuous-time system for RF amplfiers 射频放大器连续时间系统的建模与辨识
2008 38th European Microwave Conference Pub Date : 2008-10-27 DOI: 10.1109/EUMC.2008.4751621
M. Djamai, S. Bachir, C. Duvanaud
{"title":"Modeling and identification of continuous-time system for RF amplfiers","authors":"M. Djamai, S. Bachir, C. Duvanaud","doi":"10.1109/EUMC.2008.4751621","DOIUrl":"https://doi.org/10.1109/EUMC.2008.4751621","url":null,"abstract":"In this paper, we present a new identification procedure for radio frequency power amplifier (PA) in the presence of nonlinear distortion and memory effects. The proposed procedure uses a continuous-time model where PA dynamics are modeled with a multivariable filter and a general polynomial function. Using the baseband input and output data, model parameters are obtained by an iterative identification algorithm. Finally, the proposed estimation method is tested and validated on experimental data by comparison of the quadrature IQ signals in time domain.","PeriodicalId":308339,"journal":{"name":"2008 38th European Microwave Conference","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115676920","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
An Efficiency Optimized Controlling Scheme for Dynamic Load Modulation of Power Amplifiers 一种功率放大器动态负载调制效率优化控制方案
2008 38th European Microwave Conference Pub Date : 2008-10-01 DOI: 10.1109/EUMC.2008.4751519
H. Nemati, C. Fager, U. Gustavsson, H. Zirath
{"title":"An Efficiency Optimized Controlling Scheme for Dynamic Load Modulation of Power Amplifiers","authors":"H. Nemati, C. Fager, U. Gustavsson, H. Zirath","doi":"10.1109/EUMC.2008.4751519","DOIUrl":"https://doi.org/10.1109/EUMC.2008.4751519","url":null,"abstract":"An efficiency optimized controlling scheme for dynamic load modulation (DLM) of power amplifiers (PAs) is proposed. In this scheme, both the input signal and load impedance are controlled to allow high efficiency operation of PAs for a desired output signal modulation. The proposed technique is demonstrated by two 1 GHz, LDMOS, switched mode power amplifiers (SMPAs) which are characterized by varying the input power during load-pull measurements. It is shown that the power-added efficiency (PAE) of the PAs in back-off operation can significantly be improved by the optimum controlling scheme.","PeriodicalId":308339,"journal":{"name":"2008 38th European Microwave Conference","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123127675","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 Three-Dimensional Unconditionally-Stable FDTD Method Based on Split-Step Scheme and Crank-Nicolson Scheme 基于分步格式和Crank-Nicolson格式的三维无条件稳定FDTD方法
2008 38th European Microwave Conference Pub Date : 2008-10-01 DOI: 10.1109/EUMC.2008.4751539
Q. Chu, Yong-Dan Kong
{"title":"A Three-Dimensional Unconditionally-Stable FDTD Method Based on Split-Step Scheme and Crank-Nicolson Scheme","authors":"Q. Chu, Yong-Dan Kong","doi":"10.1109/EUMC.2008.4751539","DOIUrl":"https://doi.org/10.1109/EUMC.2008.4751539","url":null,"abstract":"A new three dimensional split-step finite-difference time-domain (FDTD) method bases on Crank-Nicolson scheme is presented, which provides simple algorithm implementation and new splitting forms along the x, y and z coordinate directions. Through three sub-steps, the corresponding scheme translates a 3-D problem into three 1-D problems to reduce computational complexity. The proposed method is proven to be unconditionally stable and has second-order accuracy in time and space. In the application of a cavity, the proposed method produces 10% reduction of the run time than the alternating-direction implicit (ADI)-FDTD method and 35% than the split-step (SS)-FDTD (2,2) method.","PeriodicalId":308339,"journal":{"name":"2008 38th European Microwave Conference","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121829214","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
An Automatic, Statistical-based Detection of Outliers in an Inter-laboratory Comparison of Nonlinear Measurements 实验室间非线性测量比较中异常值的自动、基于统计的检测
2008 38th European Microwave Conference Pub Date : 2008-10-01 DOI: 10.1109/EUMC.2008.4751615
W. van Moer, K. Barbé, Y. Rolain
{"title":"An Automatic, Statistical-based Detection of Outliers in an Inter-laboratory Comparison of Nonlinear Measurements","authors":"W. van Moer, K. Barbé, Y. Rolain","doi":"10.1109/EUMC.2008.4751615","DOIUrl":"https://doi.org/10.1109/EUMC.2008.4751615","url":null,"abstract":"This paper describes the comparison of calibrated nonlinear Radio-Frequency (RF) measurements performed on a nonlinear device by five different measurement laboratories. The device-under-test is a nonlinear active semiconductor device that is designed to generate a maximum number of harmonic tones. The goal is to obtain a simple, automated method that allows detecting if some laboratory had measurement problems during the measurement campaign. The developed comparison method is based on the Analysis of Variance (ANOVA) technique.","PeriodicalId":308339,"journal":{"name":"2008 38th European Microwave Conference","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117116934","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: 2
Small Signal and Noise Equivalent Circuit for CMOS 65 nm up to 110 GHz 小信号和噪声等效电路的CMOS 65纳米高达110 GHz
2008 38th European Microwave Conference Pub Date : 2008-10-01 DOI: 10.1109/EUMC.2008.4751453
N. Waldhoff, C. Andrei, D. Gloria, F. Danneville, G. Dambrine
{"title":"Small Signal and Noise Equivalent Circuit for CMOS 65 nm up to 110 GHz","authors":"N. Waldhoff, C. Andrei, D. Gloria, F. Danneville, G. Dambrine","doi":"10.1109/EUMC.2008.4751453","DOIUrl":"https://doi.org/10.1109/EUMC.2008.4751453","url":null,"abstract":"In this paper, a measurement procedure with S parameters and Noise modelling for advanced MOSFET technology is presented. The complete methodology is described from the VNA (Vector Network Analyser) calibration to the simulation results using a complex de-embedding procedure. A noise measurement bench in W band (75-110 GHz) has been developed using the well known F50 method. The comparison between measurements and model simulation shows good agreement up to 110 GHz. Such methodology leads to a robust MOSFET model designated for millimetre wave integrated circuit.","PeriodicalId":308339,"journal":{"name":"2008 38th European Microwave Conference","volume":"165 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121096254","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
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