Radio-Frequency Inverters With Transmission-Line Input Networks
A soft-switching inverter topology (the Class Phi ) is presented which draws dc source current through a transmission line or a lumped-network approximation of a distributed line. By aligning the inverter switching frequency just below the line's lambda/4-wave resonance, the Class Phi topology...
| Main Authors: | , , |
|---|---|
| Other Authors: | |
| Format: | Article |
| Language: | en_US |
| Published: |
Institute of Electrical and Electronics Engineers (IEEE)
2014
|
| Online Access: | http://hdl.handle.net/1721.1/86972 https://orcid.org/0000-0002-5765-4369 https://orcid.org/0000-0002-0746-6191 |
| _version_ | 1811071077407784960 |
|---|---|
| author | Phinney, Joshua W. Perreault, David J. Lang, Jeffrey H. |
| 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 Phinney, Joshua W. Perreault, David J. Lang, Jeffrey H. |
| author_sort | Phinney, Joshua W. |
| collection | MIT |
| description | A soft-switching inverter topology (the Class Phi ) is presented which draws dc source current through a transmission line or a lumped-network approximation of a distributed line. By aligning the inverter switching frequency just below the line's lambda/4-wave resonance, the Class Phi topology enforces odd-and even-harmonic content in its drain voltage and input current, respectively. The symmetrizing action of the transmission-line dynamics results in natural square-wave operation of the switch, reducing the inverter stresses (relative to a Class E) for a given power throughput. The inverter waveforms and normalized power-output capability are analyzed in simple terms, and supported by measurements of an inverter built around a length of distributed line, and an inverter incorporating a lumped L-C ladder network. The latter implementation is constructed with air-core magnetics and inter-layer capacitances that are integrated into the thickness of a printed-circuit board. A comparison with a Class E inverter of similar size and ratings demonstrates the small passive-component values and manufacturing advantages afforded by the Class Phi topology. |
| first_indexed | 2024-09-23T08:45:43Z |
| format | Article |
| id | mit-1721.1/86972 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T08:45:43Z |
| publishDate | 2014 |
| publisher | Institute of Electrical and Electronics Engineers (IEEE) |
| record_format | dspace |
| spelling | mit-1721.1/869722022-09-23T14:22:33Z Radio-Frequency Inverters With Transmission-Line Input Networks Phinney, Joshua W. Perreault, David J. Lang, Jeffrey H. Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science Perreault, David J. Perreault, David J. Lang, Jeffrey H. A soft-switching inverter topology (the Class Phi ) is presented which draws dc source current through a transmission line or a lumped-network approximation of a distributed line. By aligning the inverter switching frequency just below the line's lambda/4-wave resonance, the Class Phi topology enforces odd-and even-harmonic content in its drain voltage and input current, respectively. The symmetrizing action of the transmission-line dynamics results in natural square-wave operation of the switch, reducing the inverter stresses (relative to a Class E) for a given power throughput. The inverter waveforms and normalized power-output capability are analyzed in simple terms, and supported by measurements of an inverter built around a length of distributed line, and an inverter incorporating a lumped L-C ladder network. The latter implementation is constructed with air-core magnetics and inter-layer capacitances that are integrated into the thickness of a printed-circuit board. A comparison with a Class E inverter of similar size and ratings demonstrates the small passive-component values and manufacturing advantages afforded by the Class Phi topology. National Science Foundation (U.S.) (Award 0401278) 2014-05-15T13:59:08Z 2014-05-15T13:59:08Z 2007-07 2006-10 Article http://purl.org/eprint/type/JournalArticle 0885-8993 1941-0107 http://hdl.handle.net/1721.1/86972 Phinney, Joshua W., David J. Perreault, and Jeffrey H. Lang. “Radio-Frequency Inverters With Transmission-Line Input Networks.” IEEE Trans. Power Electron. 22, no. 4 (n.d.): 1154–1161. © 2007 IEEE https://orcid.org/0000-0002-5765-4369 https://orcid.org/0000-0002-0746-6191 en_US http://dx.doi.org/10.1109/TPEL.2007.900465 IEEE Transactions on Power Electronics 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) Vabulas |
| spellingShingle | Phinney, Joshua W. Perreault, David J. Lang, Jeffrey H. Radio-Frequency Inverters With Transmission-Line Input Networks |
| title | Radio-Frequency Inverters With Transmission-Line Input Networks |
| title_full | Radio-Frequency Inverters With Transmission-Line Input Networks |
| title_fullStr | Radio-Frequency Inverters With Transmission-Line Input Networks |
| title_full_unstemmed | Radio-Frequency Inverters With Transmission-Line Input Networks |
| title_short | Radio-Frequency Inverters With Transmission-Line Input Networks |
| title_sort | radio frequency inverters with transmission line input networks |
| url | http://hdl.handle.net/1721.1/86972 https://orcid.org/0000-0002-5765-4369 https://orcid.org/0000-0002-0746-6191 |
| work_keys_str_mv | AT phinneyjoshuaw radiofrequencyinverterswithtransmissionlineinputnetworks AT perreaultdavidj radiofrequencyinverterswithtransmissionlineinputnetworks AT langjeffreyh radiofrequencyinverterswithtransmissionlineinputnetworks |