Work

An Adaptive Bi-Band Doherty PA with Main-Peak Amplifier Swapping and Extended Bandwidth Performance

Year: 2025

Type: article

Abstract: This paper presents the design, implementation, and characterization of a broadband power amplifier (PA) with a reconfigurable architecture, capable of efficient operation across a wide frequency range of 0.2–3.6 GHz. Leveraging Gallium Nitride (GaN) devices, the PA achieves high efficiency and power, essential for broadband and high-frequency applications. By swapping the roles of the main and peak amplifiers, the PA achieves Doherty behavior at two related frequencies, 1.4 and 2.8 GHz, where the first is exactly half of the second, while maintaining consistent efficiency and output power across the remaining band in non-Doherty modes. Characterization results confirm the reliability and versatility of the proposed design, showcasing its ability to deliver robust performance across both Doherty and non-Doherty operational ranges. This combination of GaN technology and innovative reconfigurability makes the PA highly suitable for broadband applications requiring high efficiency, flexibility, and wideband coverage. Moreover, the simplicity of the proposed design makes it not only practical for implementation but also highly competitive among state-of-the-art solutions.

Source: Inventions

DOI: 10.3390/inventions10040069

Authors: Jorge Julian Moreno Rubio, Edison Ferney Angarita Malaver, Jairo Alonso Mesa Lara

Institution: Pedagogical and Technological University of Colombia

Language: English

Topic: Advanced Power Amplifier Design

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,172

Funder: Keysight Technologies