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On the dependability of load dependent X-parameter models for varying loads 负荷相关x参数模型在变负荷下的可靠性研究
2017 Integrated Nonlinear Microwave and Millimetre-wave Circuits Workshop (INMMiC) Pub Date : 2017-04-01 DOI: 10.1109/INMMIC.2017.7927306
B. Pichler, N. Leder, G. Magerl, H. Arthaber
{"title":"On the dependability of load dependent X-parameter models for varying loads","authors":"B. Pichler, N. Leder, G. Magerl, H. Arthaber","doi":"10.1109/INMMIC.2017.7927306","DOIUrl":"https://doi.org/10.1109/INMMIC.2017.7927306","url":null,"abstract":"Load dependent X-parameter models offer an accurate description of nonlinear devices, especially in mismatched environments. However, the model prediction is ambiguous in many cases, because the model contains X-parameter sets on a predefined load pull grid. Hence, the prediction of the model is strongly dependent on its implementation and the underlying interpolation of the X-parameters. As shown in this work, this has a significant impact on the overall modeling error. As the interpolation behavior is seldomly specified, even commercially available simulators tend to generate predictions that suffer from relatively large model errors. This work compares these results with other known interpolation approaches, namely with a nearest neighbor approach and with a weighted superposition using several sets of X-parameters. The modeling errors are determined and compared by using these model implementations and measured load dependent X-parameter models as well as verification measurements. All the measurements are gained from the same GaN HEMT produced by Cree.","PeriodicalId":322300,"journal":{"name":"2017 Integrated Nonlinear Microwave and Millimetre-wave Circuits Workshop (INMMiC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129945248","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: 4
Nonlinear characterisation for microstrip filters with low passive intermodulation 低无源互调微带滤波器的非线性特性
2017 Integrated Nonlinear Microwave and Millimetre-wave Circuits Workshop (INMMiC) Pub Date : 2017-03-10 DOI: 10.1109/INMMIC.2017.7927323
A. Shitvov, D. Kozlov
{"title":"Nonlinear characterisation for microstrip filters with low passive intermodulation","authors":"A. Shitvov, D. Kozlov","doi":"10.1109/INMMIC.2017.7927323","DOIUrl":"https://doi.org/10.1109/INMMIC.2017.7927323","url":null,"abstract":"This paper presents an RF CAD assisted approach to accurate characterisation of microstrip nonlinearities in planar microwave circuits fabricated on commercial printed circuit board laminates. The proposed methodology is employed for the analysis of the nonlinear effects in microstrip filters due to weak intrinsic distributed nonlinearity. The results of this study provide useful insights on the optimum design, modelling and characterisation of planar microwave components under linearity constraints.","PeriodicalId":322300,"journal":{"name":"2017 Integrated Nonlinear Microwave and Millimetre-wave Circuits Workshop (INMMiC)","volume":"166 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113991448","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: 4
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