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| Presentation | 2022-12-15 15:25 Two-Power-Level Impedance Match for Out-phasing Amplifier Takashi Maehata, Takashi Sumiyoshi (SEI), Ren Furumoto, Kenjiro Nishikawa (Kagoshima University)  MW2022-136 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | The outphasing amplifier (OPA) has been attracting attention as an amplifier that achieves high efficiency from saturated output to high back-off output. Moreover, mixed mode outphasing amplifiers (MOPA), which change amplitude as well as phase below high back-off, are focused on. Generally, an outphasing amplifier consists of two amplifiers and a non-isolated Chireix power combiner. Matching circuit design for MOPA requires a highly challenging optimization process due to the mutual interference of the four complicated matching conditions at the output ports of the two amplifiers under two power level conditions. In this paper, MOPA design is simplified by deriving an analytical solution for simultaneous matching with the optimum load under two power conditions, using the invariants of a lossless matching circuit. Next, a matching circuit, using offset lines, was introduced to enable independent adjustment of the four matching conditions. A result of the simulation and measurement, it was confirmed that the power efficiency agreed within about 1% and output power and efficiency of MOPA were 46dBm and 70%, respectively. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Outphasing / Invariant / Matching Network / / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 122, no. 313, MW2022-136, pp. 27-32, Dec. 2022. | |
| Paper # | MW2022-136 | |
| Date of Issue | 2022-12-08 (MW) | |
| ISSN | Online edition: ISSN 2432-6380 | |
| Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | MW2022-136 |
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| Conference Information | |
| Committee | MW |
| Conference Date | 2022-12-15 - 2022-12-16 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Jingu-Kaikan(Ise) |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Microwave, etc. |
| Paper Information | |
| Registration To | MW |
| Conference Code | 2022-12-MW |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Two-Power-Level Impedance Match for Out-phasing Amplifier |
| Sub Title (in English) | |
| Keyword(1) | Outphasing |
| Keyword(2) | Invariant |
| Keyword(3) | Matching Network |
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| 1st Author's Name | Takashi Maehata |
| 1st Author's Affiliation | Sumitomo Electric Industries Ltd. (SEI) |
| 2nd Author's Name | Takashi Sumiyoshi |
| 2nd Author's Affiliation | Sumitomo Electric Industries Ltd. (SEI) |
| 3rd Author's Name | Ren Furumoto |
| 3rd Author's Affiliation | Kagoshima University (Kagoshima University) |
| 4th Author's Name | Kenjiro Nishikawa |
| 4th Author's Affiliation | Kagoshima University (Kagoshima University) |
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| Speaker | Author-1 |
| Date Time | 2022-12-15 15:25:00 |
| Presentation Time | 25 minutes |
| Registration for | MW |
| Paper # | MW2022-136 |
| Volume (vol) | vol.122 |
| Number (no) | no.313 |
| Page | pp.27-32 |
| #Pages | 6 |
| Date of Issue | 2022-12-08 (MW) |
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