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Paper Abstract and Keywords
Presentation 2007-07-27 15:40
A study of Hybrid Transmitter of LINC and EER
Takahiko Kishi (Samsung) SR2007-42
Abstract (in Japanese) (See Japanese page) 
(in English) The distortion of transmitters is an impediment of the improvement of frequency use. It causes the restriction of the actual transmission rate due to deterioration of modulation accuracy in the channel band, and gives interference to radios about the radio that uses neighboring frequencies outside the channel band. In this paper, LINC with excellent theoretical linearity but the low power efficiency in low power range and EER with excellent power efficiency and higher linearity than linear amplifiers in high power but lower distortion in low power are combined as the measures, and it is operated as EER in a high power range and LINC in a low power range. Then, issues of efficiency of LINC and dynamic range of EER are solved, and it is possible to balance excellent linearity and wide dynamic range. Furthermore, band limiting of the envelope amplifier in addi-tion to balance linearity and dynamic rage becomes possible because it combines this proposal and the band limiting envelope amplifier of EER. As a result, the feasibility of LINC system and EER system for which realization in broadband or high PAPR modulation systems improves by this proposal.
Keyword (in Japanese) (See Japanese page) 
(in English) LINC / EER / Power Amplifier / Power Efficiency / SDR / Cognitive Radio / Give Interference /  
Reference Info. IEICE Tech. Rep., vol. 107, no. 162, SR2007-42, pp. 137-144, July 2007.
Paper # SR2007-42 
Date of Issue 2007-07-19 (SR) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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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Conference Information
Committee SR  
Conference Date 2007-07-26 - 2007-07-27 
Place (in Japanese) (See Japanese page) 
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Paper Information
Registration To SR 
Conference Code 2007-07-SR 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A study of Hybrid Transmitter of LINC and EER 
Sub Title (in English)  
Keyword(1) LINC  
Keyword(2) EER  
Keyword(3) Power Amplifier  
Keyword(4) Power Efficiency  
Keyword(5) SDR  
Keyword(6) Cognitive Radio  
Keyword(7) Give Interference  
1st Author's Name Takahiko Kishi  
1st Author's Affiliation Samsung Yokohama Research Institute (Samsung)
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Date Time 2007-07-27 15:40:00 
Presentation Time 25 
Registration for SR 
Paper # SR2007-42 
Volume (vol) 107 
Number (no) no.162 
Page pp.137-144 
Date of Issue 2007-07-19 (SR) 

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