A broadband Doherty power amplifier with harmonic suppression |
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| Affiliation: | 1. Electrical Engineering Department, Faculty of Engineering, Razi University, Tagh-E-Bostan, Kermanshah 67149, Iran;2. Computational Intelligence Research Centre, Razi University, Tagh-E-Bostan, Kermanshah 67149, Iran;1. Electrical Engineering Department, Faculty of Engineering, Razi University, Tagh-E-Bostan, Kermanshah 67149, Iran;2. Computational Intelligence Research Centre, Razi University, Tagh-E-Bostan, Kermanshah 67149, Iran;1. Department of Respiratory and Critical Care Medicine, Ludwig Boltzmann Institute for COPD, Otto Wagner Hospital, Sanatoriumstrasse 2, 1140 Vienna, Austria;2. Hartmann Hospital, Nikolsdorfergasse 26-36, 1050 Vienna, Austria;3. St. Anna Children''s Hospital, Kinderspitalgasse 6, 1090 Vienna, Austria;1. Institute of Physics, Polish Academy of Sciences, Al. Lotnikow 32/46, 02-668 Warsaw, Poland;2. Faculty of Physics, University of Warsaw, ul. Hoza 69, 00-681 Warsaw, Poland;1. College of Information and Electrical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China;2. College of Electrical and Information Engineering, Hunan University, Changsha 410082, China |
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| Abstract: | In this paper, the design and implementation of the broadband, Doherty power amplifier (DPA) with 2nd and 3rd harmonics suppression, with theoretical analysis is presented. In the proposed structure a novel harmonic suppressed Wilkinson power divider used in DPA, which results in harmonic suppression with high level of attenuation. Moreover the proposed DPA has major advantages in terms of the linearity and works on a wideband frequency range (2.1–2.7 GHz) with minimum 40% drain efficiency (DE). The linearity of the proposed DPA is increased extremely, which significant improvement (7 dBm) is achieved from the main amplifier. In the proposed DPA, the main and the auxiliary amplifiers are implemented using Class-AB and Class-C topology respectively with equal MRF6S27015N MOTOROLA transistors in LDMOS technology. |
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| Keywords: | Doherty power amplifier (DPA) Harmonic suppression High efficiency Power amplifier (PA) Wideband |
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