Theory and Implementation of RF-Input Outphasing Power Amplification
Conventional outphasing power amplifier systems require both a radio frequency (RF) carrier input and a separate baseband input to synthesize a modulated RF output. This work presents an RF-input/RF-output outphasing power amplifier that directly amplifies a modulated RF input, eliminating the need...
| Main Authors: | , |
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
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Institute of Electrical and Electronics Engineers (IEEE)
2017
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| Online Access: | http://hdl.handle.net/1721.1/111633 https://orcid.org/0000-0002-0746-6191 |
| _version_ | 1826213979814363136 |
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| author | Barton, Taylor W. Perreault, David J |
| author2 | Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science |
| author_facet | Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science Barton, Taylor W. Perreault, David J |
| author_sort | Barton, Taylor W. |
| collection | MIT |
| description | Conventional outphasing power amplifier systems require both a radio frequency (RF) carrier input and a separate baseband input to synthesize a modulated RF output. This work presents an RF-input/RF-output outphasing power amplifier that directly amplifies a modulated RF input, eliminating the need for multiple costly IQ modulators and baseband signal component separation as in previous outphasing systems. An RF signal decomposition network directly synthesizes the phase- and amplitude-modulated signals used to drive the branch power amplifiers (PAs). With this approach, a modulated RF signal including zero-crossings can be applied to the single RF input port of the outphasing RF amplifier system. The proposed technique is demonstrated at 2.14 GHz in a four-way lossless outphasing amplifier with transmission-line power combiner. The RF decomposition network is implemented using a transmission-line resistance compression network with nonlinear loads designed to provide the necessary amplitude and phase decomposition. The resulting proof-of-concept outphasing power amplifier has a peak CW output power of 93 W, peak drain efficiency of 70%, and performance on par with a previously-demonstrated outphasing and power combining system requiring four IQ modulators and a digital signal component separator. |
| first_indexed | 2024-09-23T15:57:53Z |
| format | Article |
| id | mit-1721.1/111633 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T15:57:53Z |
| publishDate | 2017 |
| publisher | Institute of Electrical and Electronics Engineers (IEEE) |
| record_format | dspace |
| spelling | mit-1721.1/1116332022-09-29T17:22:08Z Theory and Implementation of RF-Input Outphasing Power Amplification Barton, Taylor W. Perreault, David J Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science Perreault, David J Conventional outphasing power amplifier systems require both a radio frequency (RF) carrier input and a separate baseband input to synthesize a modulated RF output. This work presents an RF-input/RF-output outphasing power amplifier that directly amplifies a modulated RF input, eliminating the need for multiple costly IQ modulators and baseband signal component separation as in previous outphasing systems. An RF signal decomposition network directly synthesizes the phase- and amplitude-modulated signals used to drive the branch power amplifiers (PAs). With this approach, a modulated RF signal including zero-crossings can be applied to the single RF input port of the outphasing RF amplifier system. The proposed technique is demonstrated at 2.14 GHz in a four-way lossless outphasing amplifier with transmission-line power combiner. The RF decomposition network is implemented using a transmission-line resistance compression network with nonlinear loads designed to provide the necessary amplitude and phase decomposition. The resulting proof-of-concept outphasing power amplifier has a peak CW output power of 93 W, peak drain efficiency of 70%, and performance on par with a previously-demonstrated outphasing and power combining system requiring four IQ modulators and a digital signal component separator. 2017-09-25T17:27:41Z 2017-09-25T17:27:41Z 2015-11 2015-09 Article http://purl.org/eprint/type/JournalArticle 0018-9480 1557-9670 http://hdl.handle.net/1721.1/111633 Barton, Taylor W., and Perreault, David J. “Theory and Implementation of RF-Input Outphasing Power Amplification.” IEEE Transactions on Microwave Theory and Techniques 63, 12 (December 2015): 4273–4283 © 2015 Institute of Electrical and Electronics Engineers (IEEE) https://orcid.org/0000-0002-0746-6191 en_US http://dx.doi.org/10.1109/tmtt.2015.2495358 IEEE Transactions on Microwave Theory and Techniques Creative Commons Attribution-Noncommercial-Share Alike http://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf Institute of Electrical and Electronics Engineers (IEEE) MIT Web Domain |
| spellingShingle | Barton, Taylor W. Perreault, David J Theory and Implementation of RF-Input Outphasing Power Amplification |
| title | Theory and Implementation of RF-Input Outphasing Power Amplification |
| title_full | Theory and Implementation of RF-Input Outphasing Power Amplification |
| title_fullStr | Theory and Implementation of RF-Input Outphasing Power Amplification |
| title_full_unstemmed | Theory and Implementation of RF-Input Outphasing Power Amplification |
| title_short | Theory and Implementation of RF-Input Outphasing Power Amplification |
| title_sort | theory and implementation of rf input outphasing power amplification |
| url | http://hdl.handle.net/1721.1/111633 https://orcid.org/0000-0002-0746-6191 |
| work_keys_str_mv | AT bartontaylorw theoryandimplementationofrfinputoutphasingpoweramplification AT perreaultdavidj theoryandimplementationofrfinputoutphasingpoweramplification |