High-efficiency three-way Doherty power amplifier using reconfigurable PD
-
Shiwei Zhao
,
Jun Guan
Abstract
In this paper, a new reconfigurable power divider (PD) is proposed to improve the efficiency of the three-way Doherty power amplifier (DPA). The conventional λ/4 transmission line is replaced by the proposed reconfigurable PD in the input of peaking amplifier, where the 90° phase shift and impedance matching can be achieved. Furthermore, the output power distribution ratio (PDR) can be continuously adjusted in a large range by adjusting the reverse voltage of the varactor diodes. Therefore, the reconfigurable PD with the best PDR can assign input power to the peaking amplifier. Experiment results show that the maximum measured power added efficiency (PAE) of the proposed three-way DPA is 49%, which is improved by 5% compared with conventional three-way DPA.
Funding source: the Natural Science Foundation of Chongqing under Grant
Award Identifier / Grant number: cstc2018jcyjAX0014
Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
Research funding: This work was supported in part by the Natural Science Foundation of Chongqing under grant cstc2018jcyjAX0014.
Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
References
[1] R. S. Pengelly, “The Doherty power amplifier,” in 2015 IEEE MTT-S International Microwave Symposium, Phoenix, USA, IEEE, 2015, pp. 1–4.10.1109/MWSYM.2015.7166705Suche in Google Scholar
[2] H. Lyu and K. Chen, “Balanced-to-Doherty mode-reconfigurable power amplifier with high efficiency and linearity against load mismatch,” IEEE Trans. Microw. Theor. Tech., vol. 68, no. 5, pp. 1717–1728, 2020, https://doi.org/10.1109/tmtt.2020.2979844.Suche in Google Scholar
[3] S. Zhao, Y. Ren, and Y. Xu, “A high‐linearity Doherty power amplifier using metamaterial based on ferroelectric ceramics,” Microw. Opt. Technol. Lett., vol. 59, no. 11, pp. 2938–2942, 2017, https://doi.org/10.1002/mop.30844.Suche in Google Scholar
[4] J. Kim, “2.4 GHz Class-F−1 GaN Doherty amplifier with efficiency enhancement technique,” IEEE Microw. Wireless Compon. Lett., vol. 28, no. 1, pp. 34–36, 2017.10.1109/LMWC.2017.2767292Suche in Google Scholar
[5] Y. S. Lee, M. W. Lee, and Y. H. Jeong, “Linearity improvement of three-way Doherty amplifier using power tracking bias supply method,” Microw. Opt. Technol. Lett., vol. 50, no. 3, pp. 728–731, 2008, https://doi.org/10.1002/mop.23198.Suche in Google Scholar
[6] H. Jang, P. Roblin, C. Quindroit, et al.., “Asymmetric Doherty power amplifier designed using model-based nonlinear embedding,” IEEE Trans. Microw. Theor. Tech., vol. 62, no. 12, pp. 3436–3451, 2014, https://doi.org/10.1109/tmtt.2014.2366130.Suche in Google Scholar
[7] H. Kang, H. Lee, H. Oh, et al.., “Symmetric three-way Doherty power amplifier for high efficiency and linearity,” IEEE Trans. Circ. Syst. II: Express Briefs, vol. 64, no. 8, pp. 862–866, 2016.10.1109/TCSII.2016.2609460Suche in Google Scholar
[8] H. Koo, H. Kang, W. Lee, et al.., “GaN-HEMT asymmetric three-way Doherty power amplifier using GPD,” IET Microw., Antennas Propag., vol. 12, no. 13, pp. 2115–2121, 2018, https://doi.org/10.1049/iet-map.2018.5464.Suche in Google Scholar
[9] V. Camarchia, J. Fang, G. Ghione, et al., “Bandwidth extension of GaN Doherty power amplifier: effect on power, efficiency and linearity,” in 2013 IEEE International Wireless Symposium (IWS), Beijing, China, IEEE, 2013, pp. 1–4.10.1109/IEEE-IWS.2013.6616789Suche in Google Scholar
[10] J. Moon, J. Kim, I. Kim, et al.., “Highly efficient three-way saturated Doherty amplifier with digital feedback predistortion,” IEEE Microw. Wireless Compon. Lett., vol. 18, no. 8, pp. 539–541, 2008, https://doi.org/10.1109/lmwc.2008.2001016.Suche in Google Scholar
[11] A. Atanasković, N. Maleš-Ilić, and B. Milovanović, “Harmonic controlled three-way Doherty amplifier with improved efficiency and linearity,” in 2009 9th International Conference on Telecommunication in Modern Satellite, Cable, and Broadcasting Services, Nis, Serbia, IEEE, 2009, pp. 36–39.10.1109/TELSKS.2009.5339495Suche in Google Scholar
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Artikel in diesem Heft
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- High-efficiency three-way Doherty power amplifier using reconfigurable PD
Artikel in diesem Heft
- Frontmatter
- Research Articles
- Singular integral equations in plane wave scattering by infinite graphene strip grating with brake of periodicity
- Research on the electromagnetic scattering from foam sea based on SMCG
- Proximal gradient method based robust Capon beamforming against large DOA mismatch
- Design and implementation of microstrip array antenna for intelligent transportation systems application
- Compact antenna based on split ring resonator as high Q-factor antenna for liquid permittivity measurements
- Compact ultra-wideband monopole antenna with tunable notch bandwidth/frequency ratio
- Miniaturized bandpass filter using coupled lines for wireless applications
- Compact four-band diplexer using defected ground structures
- Design and experimental verification of compact dual-band SIW power dividers with arbitrary power division
- High-efficiency three-way Doherty power amplifier using reconfigurable PD
