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Paper Abstract and Keywords
Presentation 2019-02-13 14:50
Analysis and Compensation of Distortion in Non-linear Amplifiers based on A Complex Model
Osamu Ichiyoshi (HNB21C) SAT2018-71
Abstract (in Japanese) (See Japanese page) 
(in English) Nonlinear distortions of amplifiers can bring serious degradations in communication. A practical linearization method to reduce the nonlinear distortion is pre-distorter [1,2]. It is necessary to have the knowledge in advance about the nonlinear performances of the amplifiers in communication links to perform the pre-distortion. For that purpose Saleh model is widely used. Saleh model, useful for applications, is a mere mathematical model hence gives only poor physical interpretations. Furthermore the exact knowledge about the nonlinear amplifiers is not always available in advance. The conventional pre-distorters cannot follow the changes of the nonlinear properties of the amplifiers in time either.
In order to solve those problems the author invented a negative feedback linearizer for non-linear amplifiers based on a complex model a few years ago [3]. The negative feedback linearizer can not only cope with wide varieties of nonlinear properties of the amplifiers without the advance knowledge but also follow the changes in time.
The author has recently applied the model to analysis of the non-linear amplifiers to get some interesting results with clear physical meaning and practical applications. The cause of nonlinearity is also studied and reported.
Keyword (in Japanese) (See Japanese page) 
(in English) Non-linearity / AM/AM / AM/PM / Correlation / Uncorrelated / Stray capacity / Hooke's law / Saleh model  
Reference Info. IEICE Tech. Rep., vol. 118, no. 442, SAT2018-71, pp. 81-86, Feb. 2019.
Paper # SAT2018-71 
Date of Issue 2019-02-06 (SAT) 
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 SAT2018-71

Conference Information
Committee SANE SAT  
Conference Date 2019-02-13 - 2019-02-14 
Place (in Japanese) (See Japanese page) 
Place (in English) Tanegashima Island 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Satellite Application and General 
Paper Information
Registration To SAT 
Conference Code 2019-02-SANE-SAT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Analysis and Compensation of Distortion in Non-linear Amplifiers based on A Complex Model 
Sub Title (in English)  
Keyword(1) Non-linearity  
Keyword(2) AM/AM  
Keyword(3) AM/PM  
Keyword(4) Correlation  
Keyword(5) Uncorrelated  
Keyword(6) Stray capacity  
Keyword(7) Hooke's law  
Keyword(8) Saleh model  
1st Author's Name Osamu Ichiyoshi  
1st Author's Affiliation Human Network for Better 21 Century (HNB21C)
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Speaker Author-1 
Date Time 2019-02-13 14:50:00 
Presentation Time 25 minutes 
Registration for SAT 
Paper # SAT2018-71 
Volume (vol) vol.118 
Number (no) no.442 
Page pp.81-86 
#Pages 6 
Date of Issue 2019-02-06 (SAT) 

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