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A Sub-6 GHz Compact GaN MMIC Doherty PA with a 49.5% 6 dB back-off PAE for 5G Communications
Conference paper

A Sub-6 GHz Compact GaN MMIC Doherty PA with a 49.5% 6 dB back-off PAE for 5G Communications

Sih-Han Li, Shawn S. H. Hsu, Jie Zhang and Keh-Ching Huang
IEEE MTT-S International Microwave Symposium Digest, Vol.2018-June, pp.805-807
08/2018
DOI: https://doi.org/10.1109/MWSYM.2018.8439474
Appears in  keyword about Physics

Abstract

5G communication Doherty Gallium Nitride (GaN) MMIC PAE power amplifier Radiation Condensed Matter Physics Electrical and Electronic Engineering
This paper presents a sub-6 GHz MMIC Doherty power amplifier (DPA) for 5G communication applications based on a 0.25-μ mGaN HEMT process. The impedance inverter of the DPA is realized by combining a compact transmission line network with two shunt capacitors. Also, the ratio of power cells in the main and auxiliary amplifiers is optimized to achieve a high efficiency in output power back-off. The measured peak output power and P1d B are 38.7 and 32.1 dBm, respectively at 5.9 GHz. The power-added-efficiency (PAE) at a 6-dB output power backoff is up to 49.5%.

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