Paper Abstract and Keywords |
Presentation |
2010-09-09 13:55
Proposal of distortion reduction method for the GaN HEMT Doherty Power Amplifier with a Series Connected Load Satoshi Kawai, Yoichiro Takayama, Ryo Ishikawa, Kazuhiko Honjo (UEC) MW2010-67 Link to ES Tech. Rep. Archives: MW2010-67 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
Recently, much attention has been given to Doherty amplifiers as microwave power amplifiers that have the possibility of realizing high power efficiency and low-distortion characteristics with a wide dynamic range. Doherty introduced two types of concepts for high-efficiency linear amplifiers in 1936. One has a shunt connected load and the other has a series connected load. We proposed the microwave Doherty amplifier with a series connected load and fabricated a 1.9 GHz GaN HEMT Doherty power amplifier using baluns [5]-[7]. The amplifier realized high power efficiency with a wide dynamic range in comparison with a conventional push-pull amplifier. In this paper, we propose distortion reduction method for the Doherty amplifier with a series connected load and achieved reduction of the third-order intermodulation distortion more than 15 dB at the output power from 5 to 20 dBm. The amplifier realized power added-efficiency (PAE) of 31 % at the output power of 24 dBm at 10 dB input backoff from the saturated output power of 31 dBm with PAE of 58 % and a third-order intermodulation distortion of lower than –35 dBc at output backoff of lower than 14 dB from the saturated output power of 31 dBm. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Doherty amplifier / series connected load type / microwave amplifiers / GaN HEMT / balun / third-order intermodulation distortion / / |
Reference Info. |
IEICE Tech. Rep., vol. 110, no. 197, MW2010-67, pp. 7-12, Sept. 2010. |
Paper # |
MW2010-67 |
Date of Issue |
2010-09-02 (MW) |
ISSN |
Print edition: ISSN 0913-5685 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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MW2010-67 Link to ES Tech. Rep. Archives: MW2010-67 |
Conference Information |
Committee |
MW |
Conference Date |
2010-09-09 - 2010-09-10 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Tokyo Inst. of Tech. |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
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Paper Information |
Registration To |
MW |
Conference Code |
2010-09-MW |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Proposal of distortion reduction method for the GaN HEMT Doherty Power Amplifier with a Series Connected Load |
Sub Title (in English) |
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Keyword(1) |
Doherty amplifier |
Keyword(2) |
series connected load type |
Keyword(3) |
microwave amplifiers |
Keyword(4) |
GaN HEMT |
Keyword(5) |
balun |
Keyword(6) |
third-order intermodulation distortion |
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1st Author's Name |
Satoshi Kawai |
1st Author's Affiliation |
The University of Electro-Communications (UEC) |
2nd Author's Name |
Yoichiro Takayama |
2nd Author's Affiliation |
The University of Electro-Communications (UEC) |
3rd Author's Name |
Ryo Ishikawa |
3rd Author's Affiliation |
The University of Electro-Communications (UEC) |
4th Author's Name |
Kazuhiko Honjo |
4th Author's Affiliation |
The University of Electro-Communications (UEC) |
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Speaker |
Author-1 |
Date Time |
2010-09-09 13:55:00 |
Presentation Time |
20 minutes |
Registration for |
MW |
Paper # |
MW2010-67 |
Volume (vol) |
vol.110 |
Number (no) |
no.197 |
Page |
pp.7-12 |
#Pages |
6 |
Date of Issue |
2010-09-02 (MW) |