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Paper Abstract and Keywords
Presentation 2009-07-30 13:00
Development of a Fully Solid State Wide band Short-wave Transmitter of PSM modulation method using DC to RF conversion technology
Masahiko Yamazoe (NHK), Kazuhisa Haeiwa (Hiroshima City Univ.), Shoji Hirose (NHK), Masayoshi Fukumoto (NEC), Hideo Sato (NIHON KOUSHUHA) EE2009-7
Abstract (in Japanese) (See Japanese page) 
(in English) We developed an evolutional wideband (3M～26MHz) short-wave transmitter with an output of 1kW using PSM (Pulse Step Modulation) that digital (DRM: Digital Radio Mondiale) and analog AM modulation are possible. This equipment employs digital processed PSM method that high sound quality can be easily achieved in the modulation section and class E amplification for obtaining higher efficiency in the PA section composed of eight 125W PA. In addition, new output circuit for phase compensation of the load impedance. As a result, in the 125W PA, a drain efficiency of 95% at 3.925MHz and 86% at 25.885MHz was obtained. As analog AM characteristics, S/N of 54dB and above, distortion factor of 4% and under were obtained ranging from 3M to 26MHz. In digital modulation (DRM), S/N of about 24.5dB that satisfies target performance sufficiently was obtained.
Keyword (in Japanese) (See Japanese page) 
(in English) Short-wave band / All solid-state transmitter / Wide band / Class-E amplifier / PSM / DRM / /  
Reference Info. IEICE Tech. Rep., vol. 109, no. 156, EE2009-7, pp. 1-6, July 2009.
Paper # EE2009-7 
Date of Issue 2009-07-23 (EE) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
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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 EE2009-7

Conference Information
Committee EE  
Conference Date 2009-07-30 - 2009-07-31 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To EE 
Conference Code 2009-07-EE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Development of a Fully Solid State Wide band Short-wave Transmitter of PSM modulation method using DC to RF conversion technology 
Sub Title (in English)  
Keyword(1) Short-wave band  
Keyword(2) All solid-state transmitter  
Keyword(3) Wide band  
Keyword(4) Class-E amplifier  
Keyword(5) PSM  
Keyword(6) DRM  
Keyword(7)  
Keyword(8)  
1st Author's Name Masahiko Yamazoe  
1st Author's Affiliation NHK Engineering Administration Department (NHK)
2nd Author's Name Kazuhisa Haeiwa  
2nd Author's Affiliation Hiroshima City University (Hiroshima City Univ.)
3rd Author's Name Shoji Hirose  
3rd Author's Affiliation JAPAN BROADCASTING CORPORATION (NHK)
4th Author's Name Masayoshi Fukumoto  
4th Author's Affiliation NEC Corporation (NEC)
5th Author's Name Hideo Sato  
5th Author's Affiliation NIHON KOUSHUHA (NIHON KOUSHUHA)
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Speaker Author-1 
Date Time 2009-07-30 13:00:00 
Presentation Time 25 minutes 
Registration for EE 
Paper # EE2009-7 
Volume (vol) vol.109 
Number (no) no.156 
Page pp.1-6 
#Pages 6 
Date of Issue 2009-07-23 (EE) 

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