Design of a Broadband Continuous-Mode Doherty Power Amplifier Using a High-Order Filter Integrated Matching Network
Source abstract
Abstract
To meet the demand for high efficiency in modern broadband communication systems, this paper presents a novel continuous-mode Doherty power amplifier design method based on integrated high-order filter prototypes. By deeply merging the filter structure with the output matching network, broadband impedance transformation and harmonic suppression are simultaneously achieved within the 1.6–2.2 GHz frequency range. This approach resolves the bandwidth limitations and efficiency degradation caused by the conventional separation of matching and harmonic control stages. Using a CGH40010F GaN transistor, the impedance space was determined through load-pull analysis, and the design flexibility was enhanced by applying continuous Class-F mode theory. The implemented amplifier demonstrates a saturated efficiency of 68–72%, a 6 dB back-off efficiency of 58.9–64.9%, a saturated output power exceeding 45 dBm, an in-band gain greater than 11.2 dB, and a return loss better than −15 dB. The proposed method offers an effective solution for the design of high-performance broadband power amplifiers.
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Research context
OpenAlex topics: Advanced Power Amplifier Design · Microwave Engineering and Waveguides · Radio Frequency Integrated Circuit Design
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Science (School of Chip Industry), Hubei University of Technology, Wuhan 430068, China
College of Physics and Mechanical and Electrical Engineering, Hubei University of Education, Wuhan 430205, China
References (28)
Show source-provided references
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