Differential Switched Mode RF Power Amplifiers
The digitization of the analog radio frequency (RF) domain, carried out to realize flexible, low-cost software-defined radio transmitters, has reached the power amplifier (PA). Switched mode operation is used to implement a digital input interface and optimize the efficiency of RF amplifiers by mini...
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| Формат: | Online |
| Мова: | Англійська |
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FAU University Press
2025
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| Онлайн доступ: | ONIX_20250828T094736_9783961471522_41 |
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| _version_ | 1869525473466253312 |
|---|---|
| author | Kamper, Michael |
| author_browse | Kamper, Michael |
| author_facet | Kamper, Michael |
| author_sort | Kamper, Michael |
| collection | Directory of Open Access Books |
| description | The digitization of the analog radio frequency (RF) domain, carried out to realize flexible, low-cost software-defined radio transmitters, has reached the power amplifier (PA). Switched mode operation is used to implement a digital input interface and optimize the efficiency of RF amplifiers by minimizing the current-voltage overlap at the transistor. Differential (push-pull) operation is used to enhance the bandwidth of an amplifier by taking advantage of the symmetry to match even harmonics. This work discusses differential switched mode operation to design simultaneously efficient and wideband PAs. Using the example of the current mode class-D (CMCD) amplifier, the required harmonic output impedances in differential and common mode are derived from the ideal waveforms. In order to implement the output impedances with a large bandwidth, this thesis presents optimized designs of wideband output filters and planar baluns. The book concludes with several examples of differential switched mode RF PAs. Furthermore, the integration of antennas as differential loads for differential PAs is examined and an implementation of a so-called "amplitenna" is presented. |
| format | Online |
| id | doab-20.500.12854ir-166253 |
| institution | Directory of Open Access Books |
| language | eng |
| publishDate | 2025 |
| publishDateRange | 2025 |
| publishDateSort | 2025 |
| publisher | FAU University Press |
| publisherStr | FAU University Press |
| record_format | ojs |
| spelling | doab-20.500.12854ir-1662532025-10-16T12:40:59Z Differential Switched Mode RF Power Amplifiers Kamper, Michael Breitbandverstärker Schaltverstärker Leistungsverstärker Gegentaktverstärker thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes The digitization of the analog radio frequency (RF) domain, carried out to realize flexible, low-cost software-defined radio transmitters, has reached the power amplifier (PA). Switched mode operation is used to implement a digital input interface and optimize the efficiency of RF amplifiers by minimizing the current-voltage overlap at the transistor. Differential (push-pull) operation is used to enhance the bandwidth of an amplifier by taking advantage of the symmetry to match even harmonics. This work discusses differential switched mode operation to design simultaneously efficient and wideband PAs. Using the example of the current mode class-D (CMCD) amplifier, the required harmonic output impedances in differential and common mode are derived from the ideal waveforms. In order to implement the output impedances with a large bandwidth, this thesis presents optimized designs of wideband output filters and planar baluns. The book concludes with several examples of differential switched mode RF PAs. Furthermore, the integration of antennas as differential loads for differential PAs is examined and an implementation of a so-called "amplitenna" is presented. 2025-08-29T05:05:15Z 2025-08-29T05:05:15Z 2025-08-28T08:00:14Z 2018 book ONIX_20250828T094736_9783961471522_41 https://library.oapen.org/handle/20.500.12657/105797 9783961471522 9783961471515 https://directory.doabooks.org/handle/20.500.12854/166253 eng FAU Forschungen : Reihe B open access image/jpeg image/jpeg n/a n/a https://library.oapen.org/bitstream/20.500.12657/105797/1/9783961471522.pdf https://library.oapen.org/bitstream/20.500.12657/105797/1/9783961471522.pdf FAU University Press 10.25593/978-3-96147-152-2 10.25593/978-3-96147-152-2 2c600dea-eece-4066-87be-da335e323fdb 9783961471522 9783961471515 AG Universitätsverlage 191 Erlangen open access |
| spellingShingle | Breitbandverstärker Schaltverstärker Leistungsverstärker Gegentaktverstärker thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes Kamper, Michael Differential Switched Mode RF Power Amplifiers |
| title | Differential Switched Mode RF Power Amplifiers |
| title_full | Differential Switched Mode RF Power Amplifiers |
| title_fullStr | Differential Switched Mode RF Power Amplifiers |
| title_full_unstemmed | Differential Switched Mode RF Power Amplifiers |
| title_short | Differential Switched Mode RF Power Amplifiers |
| title_sort | differential switched mode rf power amplifiers |
| topic | Breitbandverstärker Schaltverstärker Leistungsverstärker Gegentaktverstärker thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes |
| topic_facet | Breitbandverstärker Schaltverstärker Leistungsverstärker Gegentaktverstärker thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes |
| url | ONIX_20250828T094736_9783961471522_41 |
| work_keys_str_mv | AT kampermichael differentialswitchedmoderfpoweramplifiers |