Wideband Active Load Modulation in RF Power Amplifiers
For almost a century, active load modulation techniques have been used to increase the backoff efficiency of high frequency power amplifiers. The Doherty architecture, which is based on active load modulation, has become the standard power amplifier architecture in cellular base station transmitters...
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| Format: | Online |
| Idioma: | anglès |
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FAU University Press
2025
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| Accés en línia: | ONIX_20250828T094736_9783961472062_4 |
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| _version_ | 1869518600360951808 |
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| author | Musolff, Christian Karl |
| author_browse | Musolff, Christian Karl |
| author_facet | Musolff, Christian Karl |
| author_sort | Musolff, Christian Karl |
| collection | Directory of Open Access Books |
| description | For almost a century, active load modulation techniques have been used to increase the backoff efficiency of high frequency power amplifiers. The Doherty architecture, which is based on active load modulation, has become the standard power amplifier architecture in cellular base station transmitters and makes a significant contribution to the energy-efficient operation of cellular mobile radio networks today. In recent times, the increasing availability of ever more powerful digital signal processing also led to a paradigm shift in the field of transmitter systems. The application of complex digital predistortion algorithms opens up new ways to overcome some of the bandwidth limitations that are inherent to classic power amplifier architectures based on active load modulation and thus allows to exploit the efficiency advantages of active load modulation also for the increasingly important wideband operation. In this work, a universal and illustrative method of analysis of multi-harmonic load modulation spaces is developed and the possibilities and characteristics of hybrid modes within the ‘Doherty-Outphasing continuum’ with regard to wideband operation are investigated. In the last part of the work, the theoretical findings are verified using a wideband Doherty PA demonstrator with a peak output power of 300 W in the frequency range of 680 to 1020 MHz. |
| format | Online |
| id | doab-20.500.12854ir-166240 |
| institution | Directory of Open Access Books |
| language | eng |
| publishDate | 2025 |
| publishDateRange | 2025 |
| publishDateSort | 2025 |
| publisher | FAU University Press |
| publisherStr | FAU University Press |
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| spelling | doab-20.500.12854ir-1662402025-10-16T12:17:05Z Wideband Active Load Modulation in RF Power Amplifiers Musolff, Christian Karl Leistungsverstärker Hochfrequenztechnik Mobilfunksendeanlage Breitbandverstärker Doherty-Verstärker Hochfrequenzverstärker thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TJ Electronics and communications engineering::TJF Electronics engineering thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TJ Electronics and communications engineering::TJK Communications engineering / telecommunications For almost a century, active load modulation techniques have been used to increase the backoff efficiency of high frequency power amplifiers. The Doherty architecture, which is based on active load modulation, has become the standard power amplifier architecture in cellular base station transmitters and makes a significant contribution to the energy-efficient operation of cellular mobile radio networks today. In recent times, the increasing availability of ever more powerful digital signal processing also led to a paradigm shift in the field of transmitter systems. The application of complex digital predistortion algorithms opens up new ways to overcome some of the bandwidth limitations that are inherent to classic power amplifier architectures based on active load modulation and thus allows to exploit the efficiency advantages of active load modulation also for the increasingly important wideband operation. In this work, a universal and illustrative method of analysis of multi-harmonic load modulation spaces is developed and the possibilities and characteristics of hybrid modes within the ‘Doherty-Outphasing continuum’ with regard to wideband operation are investigated. In the last part of the work, the theoretical findings are verified using a wideband Doherty PA demonstrator with a peak output power of 300 W in the frequency range of 680 to 1020 MHz. 2025-08-29T05:01:56Z 2025-08-29T05:01:56Z 2025-08-28T07:58:21Z 2019 book ONIX_20250828T094736_9783961472062_4 https://library.oapen.org/handle/20.500.12657/105760 9783961472062 9783961472055 https://directory.doabooks.org/handle/20.500.12854/166240 eng FAU Forschungen : Reihe B open access image/jpeg image/jpeg n/a n/a https://library.oapen.org/bitstream/20.500.12657/105760/1/9783961472062.pdf https://library.oapen.org/bitstream/20.500.12657/105760/1/9783961472062.pdf FAU University Press 10.25593/978-3-96147-206-2 10.25593/978-3-96147-206-2 2c600dea-eece-4066-87be-da335e323fdb 9783961472062 9783961472055 AG Universitätsverlage 169 Erlangen open access |
| spellingShingle | Leistungsverstärker Hochfrequenztechnik Mobilfunksendeanlage Breitbandverstärker Doherty-Verstärker Hochfrequenzverstärker thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TJ Electronics and communications engineering::TJF Electronics engineering thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TJ Electronics and communications engineering::TJK Communications engineering / telecommunications Musolff, Christian Karl Wideband Active Load Modulation in RF Power Amplifiers |
| title | Wideband Active Load Modulation in RF Power Amplifiers |
| title_full | Wideband Active Load Modulation in RF Power Amplifiers |
| title_fullStr | Wideband Active Load Modulation in RF Power Amplifiers |
| title_full_unstemmed | Wideband Active Load Modulation in RF Power Amplifiers |
| title_short | Wideband Active Load Modulation in RF Power Amplifiers |
| title_sort | wideband active load modulation in rf power amplifiers |
| topic | Leistungsverstärker Hochfrequenztechnik Mobilfunksendeanlage Breitbandverstärker Doherty-Verstärker Hochfrequenzverstärker thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TJ Electronics and communications engineering::TJF Electronics engineering thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TJ Electronics and communications engineering::TJK Communications engineering / telecommunications |
| topic_facet | Leistungsverstärker Hochfrequenztechnik Mobilfunksendeanlage Breitbandverstärker Doherty-Verstärker Hochfrequenzverstärker thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TJ Electronics and communications engineering::TJF Electronics engineering thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TJ Electronics and communications engineering::TJK Communications engineering / telecommunications |
| url | ONIX_20250828T094736_9783961472062_4 |
| work_keys_str_mv | AT musolffchristiankarl widebandactiveloadmodulationinrfpoweramplifiers |