Doherty power amplifier and GaN technology

In this paper, the features of GaN HEMT technology and Doherty Power Amplifier architecture will be investigated, as a possible answer for the stringent requirements of the next generation of wireless systems. In particular, the attention will be focused on the capabilities and the relevant drawbacks of a GaN HEMT technology when designing DPAs. The discussion of the most important DPA's design aspects will be done through the presentation of several hybrid prototypes. Experimental results will be also given to support the theoretical aspects.

[1]  Franco Giannini,et al.  The AB-C Doherty power amplifier. Part II: Validation , 2009 .

[2]  Franco Giannini,et al.  A design approach to increase gain feature of a Doherty Power Amplifier , 2009, 2009 European Microwave Integrated Circuits Conference (EuMIC).

[3]  W.H. Doherty,et al.  A New High Efficiency Power Amplifier for Modulated Waves , 1936, Proceedings of the Institute of Radio Engineers.

[4]  Jangheon Kim,et al.  Microwave Doherty Power Amplifier for High Efficiency and Linearity , 2006, 2006 International Workshop on Integrated Nonlinear Microwave and Millimeter-Wave Circuits.

[5]  Franco Giannini,et al.  The Doherty power amplifier , 2009 .

[6]  Jangheon Kim,et al.  The Doherty power amplifier , 2006, IEEE Microwave Magazine.

[7]  P. Colantonio,et al.  Theory and Experimental Results of a Class F AB-C Doherty Power Amplifier , 2009, IEEE Transactions on Microwave Theory and Techniques.

[8]  Franco Giannini,et al.  Compact harmonic control network for Doherty power amplifier , 2009 .

[9]  Jangheon Kim,et al.  Analysis of a Fully Matched Saturated Doherty Amplifier With Excellent Efficiency , 2008, IEEE Transactions on Microwave Theory and Techniques.

[10]  F.M. Ghannouchi,et al.  Design Optimization and DPD Linearization of GaN-Based Unsymmetrical Doherty Power Amplifiers for 3G Multicarrier Applications , 2009, IEEE Transactions on Microwave Theory and Techniques.

[11]  Jangheon Kim,et al.  Optimum operation of asymmetrical-cells-based linear Doherty power Amplifiers-uneven power drive and power matching , 2005 .

[12]  Bumman Kim,et al.  A highly efficient Doherty power amplifier employing optimized carrier cell , 2009, 2009 European Microwave Conference (EuMC).

[13]  M. Iwamoto,et al.  Linearity Improvement of HBT-Based Doherty Power Amplifiers Based on a Simple Analytical Model , 2006, IEEE Transactions on Microwave Theory and Techniques.

[14]  Y. Suzuki,et al.  Highly efficient feed-forward amplifier using a Class-F Doherty amplifier , 2003, IEEE MTT-S International Microwave Symposium Digest, 2003.

[15]  S.P. Stapleton,et al.  Linearity optimization of a high power Doherty amplifier based on post-distortion compensation , 2005, IEEE Microwave and Wireless Components Letters.