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Paper Abstract and Keywords
Presentation 2012-05-24 14:25
Performance Improvement for W-CDMA Multi Power Amplifier
Katsuya Kato, Naoko Matsunaga, Shintaro Shinjo, Kenichi Horiguchi, Morishige Hieda (Mitsubishi Electric) MW2012-10
Abstract (in Japanese) (See Japanese page) 
(in English) In This paper describes a newly developed triple power mode power amplifier for W-CDMA handset applications. The amplifier uses our proposed output circuit without switch, bypass circuit to reduce the number of bypass switch and switching feedback functions for first amplifier which are effective in realizing high efficiency operation and good receive band noise at the high power mode compared with conventional stage-bypass power amplifier. While satisfying adjacent channel power ratio of less than -40 dBc under the measurement condition of a 1.95 GHz W-CDMA(R99) modulated signal and a 3.4 V supply voltage, our prototype amplifier achieves a 28.25 dBm high output power (Po) with power added efficiency (PAE) as high as 40% at the high power mode, 17.0 dBm of Po with 23% of PAE at the middle power mode, and 7.0 dBm with 13% in the low power mode. Due to the switching feedback function, the amplifier can also achieve good receive band noise characteristics of -136 dBm/Hz (190 MHz offset) at 28.25 dBm of Po.
Keyword (in Japanese) (See Japanese page) 
(in English) W-CDMA / Power Amplifier / Stage-bypass Power Amplifier / High Efficiency / / / /  
Reference Info. IEICE Tech. Rep., vol. 112, no. 56, MW2012-10, pp. 7-10, May 2012.
Paper # MW2012-10 
Date of Issue 2012-05-17 (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)
Download PDF MW2012-10

Conference Information
Committee MW WPT  
Conference Date 2012-05-24 - 2012-05-25 
Place (in Japanese) (See Japanese page) 
Place (in English) Kyoto Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Microwave Technologies 
Paper Information
Registration To MW 
Conference Code 2012-05-MW-WPT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Performance Improvement for W-CDMA Multi Power Amplifier 
Sub Title (in English)  
Keyword(1) W-CDMA  
Keyword(2) Power Amplifier  
Keyword(3) Stage-bypass Power Amplifier  
Keyword(4) High Efficiency  
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1st Author's Name Katsuya Kato  
1st Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric)
2nd Author's Name Naoko Matsunaga  
2nd Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric)
3rd Author's Name Shintaro Shinjo  
3rd Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric)
4th Author's Name Kenichi Horiguchi  
4th Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric)
5th Author's Name Morishige Hieda  
5th Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric)
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Speaker Author-1 
Date Time 2012-05-24 14:25:00 
Presentation Time 25 minutes 
Registration for MW 
Paper # MW2012-10 
Volume (vol) vol.112 
Number (no) no.56 
Page pp.7-10 
#Pages 4 
Date of Issue 2012-05-17 (MW) 

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