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| Presentation | 2021-01-29 12:50 A Study on the matching circuit using transformer Satoshi Tanaka (Murata)  CAS2020-62 ICTSSL2020-47 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | An LC multi-stage matching circuit is widely used as a matching circuit for a power amplifier (PA) for mobile communication. On the other hand, in recent years, in the study of PA using CMOS-FET (Complementary Metal-Oxide-Semiconductor Field-Effect Transistor) with low power supply voltage, a differential amplifier that can increase the output voltage amplitude with respect to the power supply voltage has been studied. Along with this, many matching circuits using transformers have been studied. In the case of a differential PA, in addition to the advantage of voltage amplitude, the load impedance can be set twice as much as that of a single-ended PA, which makes it possible to reduce the impact of parasitic resistance. Therefore, a wide band is expected in the matching circuit using transformer. In this report, we outline the transformer matching circuit and examine the matching circuit with the most basic configuration, which is one transformer plus one capacitance. Furthermore, the fractional band width is compared with the LC matching circuit, and the problem is described. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Mobile phone / Power amplifier / Matching circuit / RF / Transformer / LC / / | |
| Reference Info. | IEICE Tech. Rep., vol. 120, no. 346, CAS2020-62, pp. 118-123, Jan. 2021. | |
| Paper # | CAS2020-62 | |
| Date of Issue | 2021-01-21 (CAS, ICTSSL) | |
| 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 | CAS2020-62 ICTSSL2020-47 |
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| Conference Information | |
| Committee | CAS ICTSSL |
| Conference Date | 2021-01-28 - 2021-01-29 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Students session, General session |
| Paper Information | |
| Registration To | CAS |
| Conference Code | 2021-01-CAS-ICTSSL |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Study on the matching circuit using transformer |
| Sub Title (in English) | |
| Keyword(1) | Mobile phone |
| Keyword(2) | Power amplifier |
| Keyword(3) | Matching circuit |
| Keyword(4) | RF |
| Keyword(5) | Transformer |
| Keyword(6) | LC |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Satoshi Tanaka |
| 1st Author's Affiliation | Murata Manufacturing Co., Ltd. (Murata) |
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| Speaker | Author-1 |
| Date Time | 2021-01-29 12:50:00 |
| Presentation Time | 25 minutes |
| Registration for | CAS |
| Paper # | CAS2020-62, ICTSSL2020-47 |
| Volume (vol) | vol.120 |
| Number (no) | no.346(CAS), no.347(ICTSSL) |
| Page | pp.118-123 |
| #Pages | 6 |
| Date of Issue | 2021-01-21 (CAS, ICTSSL) |
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