Extension of Quasi-Load Insensitive Class-E Doherty Operation with Complex Load Trajectories - Archive ouverte HAL
Communication Dans Un Congrès Année : 2024

Extension of Quasi-Load Insensitive Class-E Doherty Operation with Complex Load Trajectories

Résumé

This paper extends the quasi-load insensitive (QLI) Class-E Doherty power amplifier (PA) design methodology to address Doherty PA combiners with complex load impedance trajectories. The analysis of the Class-E PA power and efficiency load-pull contours shows that changing the class-E network resonance factor allows rotating the loadpull contours to achieve QLI operation with various Doherty combiners. Moreover, an alternative approach using a modified class-E network is proposed to overcome the frequency limitation that might be caused by the class-E network resonance factor choice. To validate the proposed methodology, a 40 W Doherty PA is designed and simulated using commercial GaN HEMT transistors achieving more than 70% Efficiency over 6-dB output power back-off at 3.8 GHz.

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Dates et versions

hal-04634025 , version 1 (03-07-2024)

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Mehdi Otmani, Ayssar Serhan, Jean-Daniel Arnould, Estelle Lauga-Larroze, Alexandre Giry. Extension of Quasi-Load Insensitive Class-E Doherty Operation with Complex Load Trajectories. 19th Conference on Ph.D Research in Microelectronics and Electronics (PRIME 2024), Jun 2024, Larnaca, Cyprus. ⟨10.1109/PRIME61930.2024.10559702⟩. ⟨hal-04634025⟩
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