JOURNAL BROWSE
Search
Advanced SearchSearch Tips
Split Slant-End Stubs for the Design of Broadband Efficient Power Amplifiers
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
Split Slant-End Stubs for the Design of Broadband Efficient Power Amplifiers
Park, Youngcheol; Kang, Taeggu;
  PDF(new window)
 Abstract
This paper suggests a class-F power amplifier with split open-end stubs to provide a broadband high-efficiency operation. These stubs are designed to have wide bandwidth by splitting wide open-end stubs into narrower stubs connected in shunt in an output matching network for class-F operation. In contrast to conventional wideband class-F designs, which theoretically need a large number of matching lines, this method requires fewer transmission lines, resulting in a compact circuit implementation. In addition, the open-end stubs are designed with slant ends to achieve additional wide bandwidth. To verify the suggested design, a 10-W class-F power amplifier operating at 1.7 GHz was implemented using a commercial GaN transistor. The measurement results showed a peak drain efficiency of 82.1% and 750 MHz of bandwidth for an efficiency higher than 63%. Additionally, the maximum output power was 14.45 W at 1.7 GHz.
 Keywords
Broadband;Class-F;Efficiency;Power Amplifier;
 Language
English
 Cited by
 References
1.
Y. Park and J. Kim, "A small-sized class-J power amplifier from combined multi-harmonic voltage reflection functions," IEICE Electronics Express, vol. 10, no. 8, pp. 1-7, 2013.

2.
S. C. Cripps, RF Power Amplif iers for Wireless Communications, 2nd ed.,Boston, MA: Artech House, 2006.

3.
T. Sharma, R. Darraji, and F. Ghannouchi, "Design methodology of high efficiency continuous mode transfer power amplifiers with one octave bandwidth," in Proceedings of 2014 21st IEEE International Conference on Electronics, Circuits and Systems (ICES), Marseille, France, 2014, pp. 674-677.

4.
N. Tuffy, A. Zhu, and T. J. Brazil, "Novel realisation of a broadband high-efficiency continuous class-F power amplifier," in Proceedings of 2011 European Microwave Integrated Circuits Conference (EuMIC), Manchester, UK, 2011, pp. 120-123.

5.
K. Chen and D. Peroulis, "A 3.1-GHz class-F power amplifier with 82% power-added-efficiency," IEEE Microwave and Wireless Components Letters, vol. 23, no. 8, pp. 436-438, 2013. crossref(new window)

6.
V. Carrubba, J. Lees, J. Benedikt, P. J. Tasker, and S. C. Cripps, "A novel highly efficient broadband continuous class-F RFPA delivering 74% average efficiency for an octave bandwidth," in Proceedings of IEEE MTT-S International Microwave Symposium Digest, Baltimore, MD, 2011, pp. 1-4.

7.
T. Kang and Y. Park, "Expanding bandwidth of class-F power amplifier with harmonic structures," in Proceedings of 2013 Asia-Pacif ic Microwave Conference (APMC), Seoul, Korea, 2013, pp. 748-750.

8.
D. M. Pozar, Microwave Engineering, 4th ed.,Hoboken, NJ: Wiley, 2012.

9.
Y. Park and H. Ku, "Geo-electrical design of wideband, efficient class-F power amplifiers," IEICE Transactions on Electronics, vol. 98, no. 10, pp. 987-990, 2015.