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| Presentation | 2023-06-22 14:25 A Suitable for S-LMBA Consideration of wideband harmonic tuning circuit Hirotaka Asami, Takashi Sumiyoshi, Hiroshi Yamamoto, Takashi Maehata (SEI)  MW2023-22 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | In next-generation mobile communications, broadband modulation signals are used to achieve high-capacity and high-speed communications. Wideband modulated signals have a large instantaneous power-to-average power ratio (PAPR), which requires power amplifiers to provide highly efficient amplification over a wide bandwidth and wide dynamic range, and the Dougherty amplifier (DPA) is conventionally used as a countermeasure. However, in the case of further broadband amplification in the future, the impedance conversion circuit using a λ/4 line in the output matching circuit is considered to be an issue to be addressed. Balanced Amplifier (LMBA), which is a load modulated amplifier that does not depend on the λ/4 impedance conversion line, has attracted attention as one of the post-Doherty amplifiers. In this paper, we design a wideband harmonic processing circuit for the Sequential-LMBA (S-LMBA), which is a highly efficient amplifier with wide bandwidth and wide dynamic range using the BA as an auxiliary amplifier, by introducing a right- and left-handed combined line (CRLH) system. The proposed method demonstrates a harmonic processing circuit with a high reflection coefficient of more than 0.9 for large-signal operation with a doubled impedance in the 3.2-4.2 GHz bandwidth, and the simulation results show that a saturation efficiency of 75.8-70.1% and an efficiency of 56.0-50.3% at 8dBO are expected to be obtained. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Load Modulated Balanced Amplifier / Wide dynamic range / Wideband / GaN HEMT / CRLH / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 123, no. 87, MW2023-22, pp. 13-18, June 2023. | |
| Paper # | MW2023-22 | |
| Date of Issue | 2023-06-15 (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 | MW2023-22 |
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| Conference Information | |
| Committee | MW |
| Conference Date | 2023-06-22 - 2023-06-23 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Yugawara-machi Shou-Kou-Kai Bldg. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Microwave, etc. |
| Paper Information | |
| Registration To | MW |
| Conference Code | 2023-06-MW |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Suitable for S-LMBA Consideration of wideband harmonic tuning circuit |
| Sub Title (in English) | |
| Keyword(1) | Load Modulated Balanced Amplifier |
| Keyword(2) | Wide dynamic range |
| Keyword(3) | Wideband |
| Keyword(4) | GaN HEMT |
| Keyword(5) | CRLH |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Hirotaka Asami |
| 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 | Hiroshi Yamamoto |
| 3rd Author's Affiliation | Sumitomo Electric Industries, Ltd (SEI) |
| 4th Author's Name | Takashi Maehata |
| 4th Author's Affiliation | Sumitomo Electric Industries, Ltd (SEI) |
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| Speaker | Author-1 |
| Date Time | 2023-06-22 14:25:00 |
| Presentation Time | 25 minutes |
| Registration for | MW |
| Paper # | MW2023-22 |
| Volume (vol) | vol.123 |
| Number (no) | no.87 |
| Page | pp.13-18 |
| #Pages | 6 |
| Date of Issue | 2023-06-15 (MW) |
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