Harmonic Load-Pull Techniques: An Overview of Modern Systems

The characterization of microwave devices under nonlinear conditions is fundamental for device technology development, to improve device large signal model accuracy and reliability, as well as an essential tool to support the design of power amplifiers (PAs). Since the input and output device terminations at fundamental and harmonics frequencies play a crucial role to set the device behaviors and performances, load-pull (LP) measurements are today one of the prominent characterization solutions at RF, micro-, and millimeter waves. In this article, a concise but comprehensive overview of the most important LP techniques available today is presented and pros and cons of the several approaches are highlighted and discussed.

[1]  Rodney S. Tucker,et al.  Computer-Aided Error Correction of Large-Signal Load-Pull Measurements , 1984 .

[2]  A. Ferrero,et al.  A novel methodology for fast harmonic-load control with a passive tuner and an active loop , 2010, 2010 IEEE MTT-S International Microwave Symposium.

[3]  Valeria Teppati,et al.  Advanced load-pull techniques-From single-ended to multiport/differential measurement systems , 2007 .

[4]  J. Lees,et al.  High power active harmonic load-pull system for characterization of high power 100-watt transistors , 2005, 2005 European Microwave Conference.

[5]  K. Andersson,et al.  Fast Multiharmonic Active Load–Pull System With Waveform Measurement Capabilities , 2012, IEEE Transactions on Microwave Theory and Techniques.

[6]  Valeria Teppati,et al.  Evaluation and Reduction of Calibration Residual Uncertainty in Load-Pull Measurements at Millimeter-Wave Frequencies , 2012, IEEE Transactions on Instrumentation and Measurement.

[7]  Y. Takayama.  A New Load-Pull Characterization Method for Microwave Power Transistors , 1976 .

[8]  A. Ferrero,et al.  A Novel Active Differential/Common-Mode Load for True Mixed-Mode Load-Pull Systems , 2006, 2006 IEEE MTT-S International Microwave Symposium Digest.

[9]  S. Corbellini,et al.  Microwave Measurements Part II Non-linear Measurements , 2007, IEEE Instrumentation & Measurement Magazine.

[10]  Umberto Pisani,et al.  Active load technique for load-pull characterisation at microwave frequencies , 1982 .

[11]  D. Hartskeerl,et al.  Large-signal characterization of an 870 MHz inverse class-F cross-coupled push-pull PA using active mixed-mode load-pull , 2006, IEEE Radio Frequency Integrated Circuits (RFIC) Symposium, 2006.

[12]  Wei Liu,et al.  Load pull characterization system for differential devices , 2003, Conference, 2003. Fall 2003. 62nd ARFTG Microwave Measurements.

[13]  R.B. Stancliff,et al.  Harmonic Load-Pull , 1979, 1979 IEEE MTT-S International Microwave Symposium Digest.

[14]  Jan Verspecht,et al.  Black Box Modelling of Power Transistors in the Frequency Domain , 1999 .

[15]  Andrea Pierenrico Ferrero,et al.  An improved calibration technique for on-wafer large-signal transistor characterization , 1993 .

[16]  Andrea Ferrero,et al.  Recent Advances in Real-Time Load-Pull Systems , 2008, IEEE Transactions on Instrumentation and Measurement.

[17]  L.C.N. de Vreede,et al.  A High-Efficiency 100-W GaN Three-Way Doherty Amplifier for Base-Station Applications , 2008, IEEE Transactions on Microwave Theory and Techniques.

[18]  J. Benedikt,et al.  Active harmonic load-pull system for characterizing highly mismatched high power transistors , 2005, IEEE MTT-S International Microwave Symposium Digest, 2005..

[19]  S. Perlow,et al.  Automatic Load Contour Mapping for Microwave Power Transistors , 1974 .

[20]  P. Colantonio,et al.  An approach to harmonic load- and source-pull measurements for high-efficiency PA design , 2004, IEEE Transactions on Microwave Theory and Techniques.

[21]  N CORPORATIO,et al.  Active Harmonic Load-Pull With Realistic Wideband Communications Signals , 2010 .