TY - JOUR
T1 - An accurate calibrate-able multiharmonic active load-pull system based on the envelope load-pull concept
AU - Hashmi, Mohammad S.
AU - Clarke, Alan L.
AU - Woodington, Simon P.
AU - Lees, Jonathan
AU - Benedikt, Johannes
AU - Tasker, Paul J.
N1 - Funding Information:
Manuscript received August 05, 2009. First published February 08, 2010; current version published March 12, 2010. This work was supported in part by the Engineering and Physical Research Council (EPSRC), Automatic Radio Frequency Techniques Group (ARFTG), Mimix Broadband (Europe), and Cobham, and in part by the ARFTG under a fellowship.
PY - 2010/3
Y1 - 2010/3
N2 - After calibration, since the systematic imperfections of the envelop loadpull (ELP) components were now fully accounted for, the user is able to rapidly set accurate terminations with full Smith chart coverage. This functionality has been achieved by optimizing the hardware configuration of the envelop loadpull concept. Development of a system whose systematic errors could be described by a magnitude invariant error flow model was critical. As a consequence, a robust calibration mechanism, that is analogous to the one-port error correction of a vector network analyzer, was exploited and comprehensively verified. After calibration, since the systematic imperfections of the ELP components were now fully accounted for, the user is able to set accurately terminations with full Smith chart coverage.
AB - After calibration, since the systematic imperfections of the envelop loadpull (ELP) components were now fully accounted for, the user is able to rapidly set accurate terminations with full Smith chart coverage. This functionality has been achieved by optimizing the hardware configuration of the envelop loadpull concept. Development of a system whose systematic errors could be described by a magnitude invariant error flow model was critical. As a consequence, a robust calibration mechanism, that is analogous to the one-port error correction of a vector network analyzer, was exploited and comprehensively verified. After calibration, since the systematic imperfections of the ELP components were now fully accounted for, the user is able to set accurately terminations with full Smith chart coverage.
KW - Active closed-loop load?pull
KW - Harmonic load?pull
KW - Nonlinear measurements
KW - Rapid load?pull calibration
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U2 - 10.1109/TMTT.2010.2040403
DO - 10.1109/TMTT.2010.2040403
M3 - Article
AN - SCOPUS:77949540143
SN - 0018-9480
VL - 58
SP - 656
EP - 664
JO - IEEE Transactions on Microwave Theory and Techniques
JF - IEEE Transactions on Microwave Theory and Techniques
IS - 3
M1 - 5409539
ER -