Performance Enhancement of Dual-Input Frequency-Periodic Load Modulated Power Amplifier at 1–5.7-GHz Bandwidth With Co-Designed Biasing Network
This study proposes a novel dual input power amplifier (PA) with a frequency-periodic load modulated output matching network supported by a broadband biasing network. The output matching network consists of two transmission lines which enable the dual-input PA to operate in Doherty or outphasing mod...
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IEEE
2025-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/11095680/ |
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| author | Takuma Torii Yuji Komatsuzaki Shintaro Shinjo Ryo Ishikawa |
| author_facet | Takuma Torii Yuji Komatsuzaki Shintaro Shinjo Ryo Ishikawa |
| author_sort | Takuma Torii |
| collection | DOAJ |
| description | This study proposes a novel dual input power amplifier (PA) with a frequency-periodic load modulated output matching network supported by a broadband biasing network. The output matching network consists of two transmission lines which enable the dual-input PA to operate in Doherty or outphasing modes depending on the frequency. The proposed broadband biasing network simply consists of a short stub circuit that cooperates with the output matching network. The biasing network not only provides a bias to PA, but also improves the bandwidth in the back-off operation over the broadband characteristic of 145%. The two independent input signals are utilized to optimize the operation of Doherty and outphasing mode. The dual-input PA is implemented using a <inline-formula> <tex-math notation="LaTeX">$0.15~\mu $ </tex-math></inline-formula> m GaN HEMT process. The fabricated PA shows a saturated output power of 35.2 dBm to 38.1 dBm with a power added efficiency (PAE) of 36.6% to 62% for the broadband 1 GHz to 5.7 GHz. The fabricated PA demonstrated an averaged output power of 27.7 dBm to 31.8 dBm, a PAE of 35% to 56.2% and an adjacent channel power Ratio (ACPR) of -41 to -55 dBc. |
| format | Article |
| id | doaj-art-01c2abfdbff8411d8486518a90e50676 |
| institution | DOAJ |
| issn | 2169-3536 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj-art-01c2abfdbff8411d8486518a90e506762025-08-20T03:09:37ZengIEEEIEEE Access2169-35362025-01-011313185613186810.1109/ACCESS.2025.359223811095680Performance Enhancement of Dual-Input Frequency-Periodic Load Modulated Power Amplifier at 1–5.7-GHz Bandwidth With Co-Designed Biasing NetworkTakuma Torii0https://orcid.org/0000-0003-3406-0661Yuji Komatsuzaki1https://orcid.org/0009-0003-1584-8207Shintaro Shinjo2https://orcid.org/0000-0003-2825-4750Ryo Ishikawa3https://orcid.org/0000-0002-7532-1664Information Technology Research and Development Center, Mitsubishi Electric Corporation, Kamakura, Kanagawa, JapanInformation Technology Research and Development Center, Mitsubishi Electric Corporation, Kamakura, Kanagawa, JapanInformation Technology Research and Development Center, Mitsubishi Electric Corporation, Kamakura, Kanagawa, JapanDepartment of Computer and Network Engineering, The University of Electro-Communications, Chofu, Tokyo, JapanThis study proposes a novel dual input power amplifier (PA) with a frequency-periodic load modulated output matching network supported by a broadband biasing network. The output matching network consists of two transmission lines which enable the dual-input PA to operate in Doherty or outphasing modes depending on the frequency. The proposed broadband biasing network simply consists of a short stub circuit that cooperates with the output matching network. The biasing network not only provides a bias to PA, but also improves the bandwidth in the back-off operation over the broadband characteristic of 145%. The two independent input signals are utilized to optimize the operation of Doherty and outphasing mode. The dual-input PA is implemented using a <inline-formula> <tex-math notation="LaTeX">$0.15~\mu $ </tex-math></inline-formula> m GaN HEMT process. The fabricated PA shows a saturated output power of 35.2 dBm to 38.1 dBm with a power added efficiency (PAE) of 36.6% to 62% for the broadband 1 GHz to 5.7 GHz. The fabricated PA demonstrated an averaged output power of 27.7 dBm to 31.8 dBm, a PAE of 35% to 56.2% and an adjacent channel power Ratio (ACPR) of -41 to -55 dBc.https://ieeexplore.ieee.org/document/11095680/Doherty power amplifierdual-input power amplifierefficiency and linearity enhancementGaNload modulationout phasing |
| spellingShingle | Takuma Torii Yuji Komatsuzaki Shintaro Shinjo Ryo Ishikawa Performance Enhancement of Dual-Input Frequency-Periodic Load Modulated Power Amplifier at 1–5.7-GHz Bandwidth With Co-Designed Biasing Network IEEE Access Doherty power amplifier dual-input power amplifier efficiency and linearity enhancement GaN load modulation out phasing |
| title | Performance Enhancement of Dual-Input Frequency-Periodic Load Modulated Power Amplifier at 1–5.7-GHz Bandwidth With Co-Designed Biasing Network |
| title_full | Performance Enhancement of Dual-Input Frequency-Periodic Load Modulated Power Amplifier at 1–5.7-GHz Bandwidth With Co-Designed Biasing Network |
| title_fullStr | Performance Enhancement of Dual-Input Frequency-Periodic Load Modulated Power Amplifier at 1–5.7-GHz Bandwidth With Co-Designed Biasing Network |
| title_full_unstemmed | Performance Enhancement of Dual-Input Frequency-Periodic Load Modulated Power Amplifier at 1–5.7-GHz Bandwidth With Co-Designed Biasing Network |
| title_short | Performance Enhancement of Dual-Input Frequency-Periodic Load Modulated Power Amplifier at 1–5.7-GHz Bandwidth With Co-Designed Biasing Network |
| title_sort | performance enhancement of dual input frequency periodic load modulated power amplifier at 1 x2013 5 7 ghz bandwidth with co designed biasing network |
| topic | Doherty power amplifier dual-input power amplifier efficiency and linearity enhancement GaN load modulation out phasing |
| url | https://ieeexplore.ieee.org/document/11095680/ |
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