A waveform engineering approach to the design of improved efficiency wideband MMIC amplifiers

This paper describes a design methodology based on waveform engineering within a harmonic active load-pull system and utilizing the Cardiff Direct Look-Up Table (DLUT) model. The process seeks to address some of the key issues facing designers when using nonlinear simulation of high power microwave amplifiers: model validity, boundary conditions and yield. The application of this process to the design of a 0.5 W, 5–10 GHz GaAs pHEMT with good PAE is detailed.

[1]  Andrei Grebennikov,et al.  RF and Microwave Power Amplifier Design , 2004 .

[2]  F. van Raay,et al.  Load Pull Characterization of GaN/AlGaN HEMTs , 2006, 2006 International Workshop on Integrated Nonlinear Microwave and Millimeter-Wave Circuits.

[3]  P. J. Tasker,et al.  High speed non-linear device characterization and uniformity investigations at X-band frequencies exploiting behavioral models , 2011, 77th ARFTG Microwave Measurement Conference.

[4]  P. J. Tasker,et al.  Highly efficient operation modes in GaN power transistors delivering upwards of 81% efficiency and 12W output power , 2008, 2008 IEEE MTT-S International Microwave Symposium Digest.

[5]  P. J. Tasker,et al.  Systematic investigation of the impact of harmonic termination in the efficiency performance of above octave bandwidth microwave amplifiers , 2009, 2009 European Microwave Conference (EuMC).

[6]  J. Benedikt,et al.  Nonlinear Data Utilization: From Direct Data Lookup to Behavioral Modeling , 2009, IEEE Transactions on Microwave Theory and Techniques.

[7]  S. C. Cripps,et al.  RF Power Amplifiers for Wireless Communications , 1999 .

[8]  Andrei Grebennikov,et al.  TFA: RF and microwave power amplifier design , 2004, Intelligent Memory Systems.

[9]  Steve C. Cripps,et al.  RF Power Amplifiers for Wireless Communications, Second Edition (Artech House Microwave Library (Hardcover)) , 2006 .

[10]  K. N. Dollman,et al.  - 1 , 1743 .

[11]  P. J. Tasker,et al.  Novel wide band high-efficiency active harmonic injection power amplifier concept , 2010, 2010 IEEE MTT-S International Microwave Symposium.