Iltcho Angelovl, A. Samelis, M. Fernández-Barciela, Tino Mojon
{"title":"Modeling of Multi-Finger SiGe HBTs and the Error Metrics of the Large Signal Model Performances","authors":"Iltcho Angelovl, A. Samelis, M. Fernández-Barciela, Tino Mojon","doi":"10.1109/INMMIC.2006.283512","DOIUrl":"https://doi.org/10.1109/INMMIC.2006.283512","url":null,"abstract":"A compact large-signal model for multi-finger SiGe HBTs is proposed and experimentally validated. The model formulation leads to a simple parameter extraction procedure. Model development was carried out for a multi-finger SiGe HBT fabricated in a commercial process technology. It consisted of 72 fingers each with a drawn emitter geometry of 2times20times0.5 mum2. Results show good fit between measured and simulated DC, S-parameter and LS characteristics","PeriodicalId":202183,"journal":{"name":"2006 International Workshop on Integrated Nonlinear Microwave and Millimeter-Wave Circuits","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123571309","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}
M. Myslinski, K. Remley, M. Mckinley, D. Schreurs, B. Nauwelaers
{"title":"A Measurement-Based Multisine Design Procedure","authors":"M. Myslinski, K. Remley, M. Mckinley, D. Schreurs, B. Nauwelaers","doi":"10.1109/INMMIC.2006.283507","DOIUrl":"https://doi.org/10.1109/INMMIC.2006.283507","url":null,"abstract":"This work presents a procedure to design a multisine with probability density function (PDF) similar to that of a measured realistic digitally modulated signal. We discuss important practical issues crucial to the successful multisine construction and related to the measurement-based nature of this method. This procedure has been successfully applied to extract a multisine emulating the orthogonal frequency division multiplexing (OFDM) signal, typically used in the IEEE 802.11a wireless LAN (WLAN) standard","PeriodicalId":202183,"journal":{"name":"2006 International Workshop on Integrated Nonlinear Microwave and Millimeter-Wave Circuits","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125379495","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}
{"title":"Accuracy Improvement of Oscilloscope Based Modulated RF Measurements","authors":"C. Fager, K. Andersson","doi":"10.1109/INMMIC.2006.283496","DOIUrl":"https://doi.org/10.1109/INMMIC.2006.283496","url":null,"abstract":"A statistical averaging method based on an extended Kalman filter is applied to digital sampling oscilloscope (DSO) measurements of modulated RF signals. Various measurements using a 48 Mbit/s 802.11a signal modulated onto a 1.9 GHz carrier are used to demonstrate significant performance enhancements as compared to traditional measurement techniques. The method presented shows that a general purpose high frequency DSO can replace more expensive and dedicated equipment for accurate characterization of microwave devices under modulated signal excitation","PeriodicalId":202183,"journal":{"name":"2006 International Workshop on Integrated Nonlinear Microwave and Millimeter-Wave Circuits","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125448258","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}
T. Reveyrand, D. Barataud, G. Neveux, J. Nebus, E. Ngoya, J. Teyssier, R. Quéré
{"title":"Overview on System Level Simulation Environment for Characterization, Modeling and Simulation of RF and Microwave devices","authors":"T. Reveyrand, D. Barataud, G. Neveux, J. Nebus, E. Ngoya, J. Teyssier, R. Quéré","doi":"10.1109/INMMIC.2006.283527","DOIUrl":"https://doi.org/10.1109/INMMIC.2006.283527","url":null,"abstract":"This paper presents an overview of research activities on system level design characterization and analysis for RF and microwave devices. The strategy consists on the use of a development platform for both simulation and instrumentation. The kernel of this platform was developed under Scilab/Scicos environment. This open-source development tool drives both instrumentation and simulation algorithms. The measurement setup, interfaced within Scilab and dedicated to the system level analysis will be described. Some measurement based models, extracted from this characterization setup, and recent advanced in system level simulation with Scicos will be also presented. The use of Scilab/Scicos for both characterization and simulation enables an \"hardware in the loop\" in system level simulations in order to allow an high flexibility for device characterization and modeling processes","PeriodicalId":202183,"journal":{"name":"2006 International Workshop on Integrated Nonlinear Microwave and Millimeter-Wave Circuits","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128182578","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}
Bumman Kim, Jangheon Kim, Ildu Kim, J. Cha, Sungchul Hong
{"title":"Microwave Doherty Power Amplifier for High Efficiency and Linearity","authors":"Bumman Kim, Jangheon Kim, Ildu Kim, J. Cha, Sungchul Hong","doi":"10.1109/INMMIC.2006.283499","DOIUrl":"https://doi.org/10.1109/INMMIC.2006.283499","url":null,"abstract":"This paper explains the basic circuit configuration of microwave Doherty amplifier and additional design methods for wide bandwidth and high power applications. This paper also presents the recent experimental results of the group using the uneven power drive. Most of the previous works about microwave Doherty amplifier have employed identical input drives. In this works, two 1:1(2-way) and a 1:2(3-way) Doherty amplifiers are implemented at 2.14GHz center frequency using LDMOS with a peak envelope power of 180 watt and 285 watt, respectively. The 2-way Doherty amplifiers are optimized at 25 watt average output power for high efficiency and linearity and the 3-way Doherty amplifier at 16 watt average output power for high linearity. The amplifiers are tested using WCDMA 4FA signal. The performances of the 2-way Doherty amplifier are compared with that of the comparable class AB amplifier and the Doherty amplifier with even power drive. The performances of the 3-way Doherty amplifier are compared with that of the comparable class AB amplifier. The experimental results show the superior performances of our Doherty amplifiers","PeriodicalId":202183,"journal":{"name":"2006 International Workshop on Integrated Nonlinear Microwave and Millimeter-Wave Circuits","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116348425","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}
{"title":"Bias Networks Impact on the Dynamic AM/AM Contours in Microwave Power Amplifiers","authors":"P. Cabral, J. Pedro, N. Carvalho","doi":"10.1109/INMMIC.2006.283503","DOIUrl":"https://doi.org/10.1109/INMMIC.2006.283503","url":null,"abstract":"It is well known that AM/AM distortion introduced by power amplifiers, PAs, is responsible for the degradation of the transmitted signals. Understanding the origins and behavior of that deterioration is thus of paramount importance for PA performance improvement. This paper is devoted to analyze the impact of bias networks on the dynamic AM/AM contours of microwave PAs and, using that knowledge, to give an interpretation to the often observed hysteretic paths' shape","PeriodicalId":202183,"journal":{"name":"2006 International Workshop on Integrated Nonlinear Microwave and Millimeter-Wave Circuits","volume":"315 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129392581","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}
V. Camarchia, S. Donati Guerrieri, M. Pirola, V. Teppati, G. Ghione
{"title":"GaN HEMT Technology Development Assessment through Nonlinear Characterization","authors":"V. Camarchia, S. Donati Guerrieri, M. Pirola, V. Teppati, G. Ghione","doi":"10.1109/INMMIC.2006.283510","DOIUrl":"https://doi.org/10.1109/INMMIC.2006.283510","url":null,"abstract":"HEMT devices based on AlGaN/GaN heterostructures exhibit constantly improving power performances. Nonlinear characterization is needed at each new device generation, both to assess the maximum power capabilities and to guide the next technological step, by highlighting open problems related to the device layout or material defects. This paper demonstrates the capabilities of the Politecnico di Torino dedicated test-set to nonlinear characterization of SELEX-SI GaN HEMTs, including the investigation of the device scaling properties and the maximum output power in different classes of operation and with several loading condition. The set-up overcomes measurements problems related to high power dissipation and device heating, high output reflection coefficients required for optimum load conditions, and the risk of device damage as a consequence of high voltage operation. The acquisition of the time-domain gate and drain waveforms together with a real-time active load-pull characterization is shown to lead to better insight into the device power performances","PeriodicalId":202183,"journal":{"name":"2006 International Workshop on Integrated Nonlinear Microwave and Millimeter-Wave Circuits","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127635794","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}
{"title":"Prior Knowledge Input Neural Network for Microwave Power Amplifier Modeling","authors":"J. Dooley, B. O'Brien, T. Brazil","doi":"10.1109/INMMIC.2006.283535","DOIUrl":"https://doi.org/10.1109/INMMIC.2006.283535","url":null,"abstract":"In this paper we present a novel neural network based behavioral level model for a microwave power amplifier (PA) utilizing a prior knowledge technique. Model parameters are extracted and verified using independent wideband digitally modulated signals in the time domain. Both quasi-memoryless and neural network models without any prior knowledge inputs are also extracted and tested with the same sets of data. Comparison of the various methods using goodness of fit statistics, show the new model presented here performs better and has improved generalization capabilities compared to models without prior knowledge inputs","PeriodicalId":202183,"journal":{"name":"2006 International Workshop on Integrated Nonlinear Microwave and Millimeter-Wave Circuits","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124858802","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}
M. Steer, N. Kriplani, S. Luniya, F. Hart, J. Lowry, C. Christoffersen
{"title":"fREEDA: An Open Source Circuit Simulator","authors":"M. Steer, N. Kriplani, S. Luniya, F. Hart, J. Lowry, C. Christoffersen","doi":"10.1109/INMMIC.2006.283523","DOIUrl":"https://doi.org/10.1109/INMMIC.2006.283523","url":null,"abstract":"fREEDAtrade is capable of transient, wavelet, harmonic balance, DC and AC analysis of circuits. Of these it is transient analysis has the greatest capability of revolutionizing the ability to design of RF circuits. fREEDAtrade uses a number of new strategies to achieve a dynamic range in transient simulation exceeding 160 dB, large signal noise analysis, modeling of oscillator phase noise, handling arbitrarily long time delays, and capturing mixed-physics. For the first time the overall philosophy behind fREEDAtrade is outlined with particular attention to topology","PeriodicalId":202183,"journal":{"name":"2006 International Workshop on Integrated Nonlinear Microwave and Millimeter-Wave Circuits","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124275974","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}
{"title":"A Methodology to Model and Predistort Short-Term Memory Nonlinearities in Power Amplifiers","authors":"P. Gilabert, G. Montoro, E. Bertran","doi":"10.1109/INMMIC.2006.283531","DOIUrl":"https://doi.org/10.1109/INMMIC.2006.283531","url":null,"abstract":"This paper presents a study on the suitability of using certain dynamic nonlinear models for modelling the power amplifier (PA) with memory effects in terms of accuracy (that is how it resembles the real data) and complexity (number of coefficients needed in the parameterization). Later, focusing in the digital predistorter (PD) model identification and taking into account the main predistortion quality indicators (adjacent channel power ratio ACPR, error vector magnitude EVM at the transmitter, and the bit error rate BER at the receiver), a Hammerstein based predistorter is proposed and a new empirical method for choosing the best delays contributing in the Hammerstein model is presented. This previous empirical study permits the use of the most significant delays contributing in the predistortion process. Therefore the digital predistorter remains scalable which is an important factor of merit since it has to be capable of being implemented in a digital signal processor","PeriodicalId":202183,"journal":{"name":"2006 International Workshop on Integrated Nonlinear Microwave and Millimeter-Wave Circuits","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128873646","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}