Outphasing Energy Recovery Amplifier With Resistance Compression for Improved Efficiency
We describe a new outphasing energy recovery amplifier (OPERA) which replaces the isolation resistor in the conventional matched combiner with a resistance-compressed rectifier for improved efficiency. The rectifier recovers the power normally wasted in the isolation resistor back to the power suppl...
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| Format: | Article |
| Language: | en_US |
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Institute of Electrical and Electronics Engineers
2010
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| Online Access: | http://hdl.handle.net/1721.1/59392 https://orcid.org/0000-0002-0746-6191 |
| _version_ | 1826188770443001856 |
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| author | Godoy, Philip Andrew Perreault, David J. Dawson, Joel L. |
| 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 Godoy, Philip Andrew Perreault, David J. Dawson, Joel L. |
| author_sort | Godoy, Philip Andrew |
| collection | MIT |
| description | We describe a new outphasing energy recovery amplifier (OPERA) which replaces the isolation resistor in the conventional matched combiner with a resistance-compressed rectifier for improved efficiency. The rectifier recovers the power normally wasted in the isolation resistor back to the power supply, while a resistance compression network (RCN) reduces the impedance variation of the rectifier as the output power varies. Because the combiner requires a fixed resistance at the isolation port to ensure matching and isolation between the two outphased power amplifiers (PAs), the RCN serves to maintain high linearity as well as high efficiency in the switching-mode PAs. For demonstration, a prototype OPERA system is designed and implemented with discrete components at an operating frequency of 48 MHz, delivering 20.8 W peak power with 82.9% PAE. The measurement results show an efficiency improvement from 17.9% to 42.0% for a 50-kHz 16-QAM signal with a peak-to-average power ratio of 6.5 dB. |
| first_indexed | 2024-09-23T08:04:29Z |
| format | Article |
| id | mit-1721.1/59392 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T08:04:29Z |
| publishDate | 2010 |
| publisher | Institute of Electrical and Electronics Engineers |
| record_format | dspace |
| spelling | mit-1721.1/593922022-09-30T07:17:50Z Outphasing Energy Recovery Amplifier With Resistance Compression for Improved Efficiency Godoy, Philip Andrew Perreault, David J. Dawson, Joel L. Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science Perreault, David J. Godoy, Philip Andrew Perreault, David J. Dawson, Joel L. resistance compression radio-frequency (RF) power amplifier outphasing Linear amplification with nonlinear components (LINC) We describe a new outphasing energy recovery amplifier (OPERA) which replaces the isolation resistor in the conventional matched combiner with a resistance-compressed rectifier for improved efficiency. The rectifier recovers the power normally wasted in the isolation resistor back to the power supply, while a resistance compression network (RCN) reduces the impedance variation of the rectifier as the output power varies. Because the combiner requires a fixed resistance at the isolation port to ensure matching and isolation between the two outphased power amplifiers (PAs), the RCN serves to maintain high linearity as well as high efficiency in the switching-mode PAs. For demonstration, a prototype OPERA system is designed and implemented with discrete components at an operating frequency of 48 MHz, delivering 20.8 W peak power with 82.9% PAE. The measurement results show an efficiency improvement from 17.9% to 42.0% for a 50-kHz 16-QAM signal with a peak-to-average power ratio of 6.5 dB. 2010-10-18T18:53:11Z 2010-10-18T18:53:11Z 2009-12 2009-09 Article http://purl.org/eprint/type/JournalArticle 0018-9480 INSPEC Accession Number: 11019192 http://hdl.handle.net/1721.1/59392 Godoy, P.A., D.J. Perreault, and J.L. Dawson. “Outphasing Energy Recovery Amplifier With Resistance Compression for Improved Efficiency.” Microwave Theory and Techniques, IEEE Transactions on 57.12 (2009): 2895-2906. © Copyright 2010 IEEE https://orcid.org/0000-0002-0746-6191 en_US http://dx.doi.org/10.1109/tmtt.2009.2033976 IEEE Transactions on Microwave Theory and Techniques Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf Institute of Electrical and Electronics Engineers IEEE |
| spellingShingle | resistance compression radio-frequency (RF) power amplifier outphasing Linear amplification with nonlinear components (LINC) Godoy, Philip Andrew Perreault, David J. Dawson, Joel L. Outphasing Energy Recovery Amplifier With Resistance Compression for Improved Efficiency |
| title | Outphasing Energy Recovery Amplifier With Resistance Compression for Improved Efficiency |
| title_full | Outphasing Energy Recovery Amplifier With Resistance Compression for Improved Efficiency |
| title_fullStr | Outphasing Energy Recovery Amplifier With Resistance Compression for Improved Efficiency |
| title_full_unstemmed | Outphasing Energy Recovery Amplifier With Resistance Compression for Improved Efficiency |
| title_short | Outphasing Energy Recovery Amplifier With Resistance Compression for Improved Efficiency |
| title_sort | outphasing energy recovery amplifier with resistance compression for improved efficiency |
| topic | resistance compression radio-frequency (RF) power amplifier outphasing Linear amplification with nonlinear components (LINC) |
| url | http://hdl.handle.net/1721.1/59392 https://orcid.org/0000-0002-0746-6191 |
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