2017/05/25 by Hansik Oh, Hyunuk Kang, Hwiseob Lee +10 · 70 citations
Engineering · #Advanced Power Amplifier Design #Amplifier #CMOS #Electrical engineering #Electronic engineering #Engineering #Linear amplifier #Materials science #Microwave Engineering and Waveguides #Physics #Power (physics) #Power bandwidth #Power gain #Power-added efficiency #RF power amplifier #Radio Frequency Integrated Circuit Design #dBm
paper · doi:10.1109/tmtt.2017.2701376
published in IEEE Transactions on Microwave Theory and Techniques 65(11), 4190-4197 (IEEE Microwave Theory and Techniques Society)
openalex publication_date 2017/05/25 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01
This paper presents a Doherty power amplifier (DPA) based on asymmetric cells using an even input power drive and an appropriate peak fundamental current ratio (FCR) between the peaking amplifier and the carrier amplifier. Using an appropriate output combiner and an even input power drive for the DPA, not only better load modulation but also enhanced power gain can be achieved. After providing an analysis for the fundamental currents, a design guide for the proposed DPA using the peak FCR is presented. For verification, conventional and proposed DPAs were designed using GaN-HEMTs for the 2.14-GHz band. Using a downlink long-term evolution signal having a peak-to-average power ratio of 6.5 dB, comparably better performances were achieved than the conventional DPAs, such as a high power-added efficiency of 55.7% and a power gain of as high as 16.6 dB, at an average output power level of 36.9 dBm.