Paper Abstract and Keywords |
Presentation |
2021-03-02 10:50
A Study on the bandwidth of the matching circuit using transformer Satoshi Tanaka (Murata Manufacturing) CAS2020-79 CS2020-86 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
With the spread of the fifth generation mobile phone, the increase of the output power of power amplifier (PA) has become important, and in recent years, differential amplifiers that can increase the output voltage amplitude for the power supply voltage have been examined from the viewpoint of power synthesis.
In the case of a differential PA, in addition to the advantage of voltage amplitude, the load impedance can be set 4 times as much as that of a single-ended PA, which makes it possible to reduce the impact of parasitic resistance.
With the study of the differential PA, many transformer matching circuits have been studied in addition to the LC matching circuits that have been widely used in the past.
The transformer matching circuit can easily realize the differential-single conversion, and the transformer matching circuit is an indispensable technology in the differential PA.
As with the LC matching circuit, widening the bandwidth of the transformer matching circuit is an issue.
In this report, we analyze the characteristics of basic transformer matching circuits by adding input/output shunt capacitance to transformers and clarify the conditions of bandwidth improvement. |
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. 385, CAS2020-79, pp. 41-46, March 2021. |
Paper # |
CAS2020-79 |
Date of Issue |
2021-02-22 (CAS, CS) |
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) |
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CAS2020-79 CS2020-86 |
Conference Information |
Committee |
CAS CS |
Conference Date |
2021-03-01 - 2021-03-02 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Online |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
Network processor, Signal processing and circuits for communications, Wireless LAN / PAN, etc. |
Paper Information |
Registration To |
CAS |
Conference Code |
2021-03-CAS-CS |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
A Study on the bandwidth of the matching circuit using transformer |
Sub Title (in English) |
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Mobile phone |
Keyword(2) |
Power amplifier |
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Matching circuit |
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RF |
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Transformer |
Keyword(6) |
LC |
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1st Author's Name |
Satoshi Tanaka |
1st Author's Affiliation |
Murata Manufacturing Co., Ltd. (Murata Manufacturing) |
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Speaker |
Author-1 |
Date Time |
2021-03-02 10:50:00 |
Presentation Time |
25 minutes |
Registration for |
CAS |
Paper # |
CAS2020-79, CS2020-86 |
Volume (vol) |
vol.120 |
Number (no) |
no.385(CAS), no.386(CS) |
Page |
pp.41-46 |
#Pages |
6 |
Date of Issue |
2021-02-22 (CAS, CS) |
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