| Title: |
Extension of quasi-load insensitive generalized Class-E Doherty operation with complex load trajectories |
| Authors: |
Otmani, Mehdi; Serhan, Ayssar; Arnould, Jean-Daniel; Lauga-Larroze, Estelle; Reynier, Pascal; Giry, Alexandre |
| Contributors: |
Département Systèmes (DSYS); Commissariat à l'énergie atomique et aux énergies alternatives - Laboratoire d'Electronique et de Technologie de l'Information (CEA-LETI); Direction de Recherche Technologique (CEA) (DRT (CEA)); Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Direction de Recherche Technologique (CEA) (DRT (CEA)); Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA); Reliable RF and Mixed-signal Systems (TIMA-RMS); Techniques de l'Informatique et de la Microélectronique pour l'Architecture des systèmes intégrés (TIMA); Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP); Université Grenoble Alpes (UGA)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP); Université Grenoble Alpes (UGA); ANR-22-PEFT-0004,NF-PERSEUS,Power-efficient radio interface for sub-7GHz distributed massive MIMO infrastructUres(2022) |
| Source: |
ISSN: 2674-0729 ; Chips ; https://cea.hal.science/cea-05071533 ; Chips, 2025, 4 (2), pp.26. ⟨10.3390/chips4020026⟩ ; https://www.mdpi.com/2674-0729/4/2/26. |
| Publisher Information: |
CCSD; MDPI |
| Publication Year: |
2025 |
| Collection: |
Université Grenoble Alpes: HAL |
| Subject Terms: |
generalized class-E; quasi-load insensitive; power amplifier; load modulation; Doherty; bond wire; [SPI.TRON]Engineering Sciences [physics]/Electronics |
| Description: |
International audience ; 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. Ad-ditionally, the QLI operation is analyzed for generalized class-E output matching network taking into account an input series inductance. The analysis of the Class-E PA power and efficiency load-pull contours shows that changing the class-E output matching network resonance factor and the input series inductance allows rotating the loadpull contours to achieve QLI operation with various Doherty combiners. Moreover, a modified class-E output network is proposed to over-come the frequency limitation that might be caused by the class-E network resonance factor choice. The impact of the resonance factor and the series inductance on the auxiliary off-state impedance is studied. 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. |
| Document Type: |
article in journal/newspaper |
| Language: |
English |
| DOI: |
10.3390/chips4020026 |
| Availability: |
https://cea.hal.science/cea-05071533; https://cea.hal.science/cea-05071533v1/document; https://cea.hal.science/cea-05071533v1/file/Extension%20of%20Generalized%20Class-E%20Quasi-Load%20Insensitive%20Operation%20for%20Complex%20Load%20Modulation_submission_28_03_2025.pdf; https://doi.org/10.3390/chips4020026 |
| Rights: |
https://creativecommons.org/licenses/by/4.0/ ; info:eu-repo/semantics/OpenAccess |
| Accession Number: |
edsbas.1AAA72AC |
| Database: |
BASE |