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Highly efficient Doherty power amplifier using continuous inverse class‐F and class‐J hybrid mode
Author(s) -
Wang Tao,
Cheng Zhiqun,
Liu Guohua
Publication year - 2020
Publication title -
international journal of rf and microwave computer‐aided engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.335
H-Index - 39
eISSN - 1099-047X
pISSN - 1096-4290
DOI - 10.1002/mmce.22464
Subject(s) - amplifier , power (physics) , mode (computer interface) , high electron mobility transistor , electrical engineering , inverse , rf power amplifier , electronic engineering , engineering , physics , mathematics , computer science , transistor , voltage , cmos , quantum mechanics , operating system , geometry
A continuous inverse class‐F (CCF −1 ) and class‐J hybrid mode for the carrier power amplifier (PA) of the Doherty power amplifier (DPA) is proposed in this paper. In this hybrid mode, the carrier PA works in the CCF −1 mode at the saturated output power and the class‐J mode at the low output power, which extends the design space of the conventional single continuous mode. A highly efficient Doherty power amplifier based on this hybrid mode is designed and fabricated using a CGH40010F 10 W GaN HEMT packaged device. The measurement results illustrate that drain efficiency (DE) of 67.2% to 81.7% at the saturated output power (Pout) and 50.4% to 60.1% at 6 dB output back‐off (OBO) is achieved across the band 1.5 to 2.1 GHz with the saturated output power is about 43.3 to 44.6 dBm.