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Paper Abstract and Keywords
Presentation 2009-09-25 17:15
[Special Talk] Anlysis and Design of a Dynamic Predistorter for WCDMA Handsets Power Amplifier
Shingo Yamanouchi, Yuuichi Aoki, Kazuaki Kunihiro (NEC), Tomohisa Hirayama (NEC Electronics Corp.), Takashi Miyazaki (NEC), Hikaru Hida (NEC Electronics Corp.) MW2009-90
Abstract (in Japanese) (See Japanese page) 
(in English) This paper presents a dynamic predistorter (PD), which linearizes dynamic AM-AM and AM-PM of a wide-band CDMA (WCDMA) handset power amplifier (PA). The dynamic PD allows an ACPR improvement of 15.7 dB, which is superior to conventional PDs that linearize static AM-AM and AM-PM. The third-order inter-modulation distortion (IMD3) amplitude and phase of the dynamic PD are designed by load impedance at RF fundamental band and baseband, respectively. Dynamic AM-AM and AM-PM of the dynamic PD are also designed through the IMD3 design. The fabricated two-stage InGaP/GaAs HBT PA module with the dynamic PD exhibited an ACPR of -40 dBc and a PAE of 50% at an average output power of 26.8 dBm with a quiescent current of 20 mA.
Keyword (in Japanese) (See Japanese page) 
(in English) Adjacent channel leakage power ratio (ACPR) / intermodulation distortion (IMD) / linearization / nonlinear distortion / power amplifiers (PAs) / predistorter (PD) / /  
Reference Info. IEICE Tech. Rep., vol. 109, no. 210, MW2009-90, pp. 93-98, Sept. 2009.
Paper # MW2009-90 
Date of Issue 2009-09-18 (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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Conference Information
Committee MW  
Conference Date 2009-09-25 - 2009-09-25 
Place (in Japanese) (See Japanese page) 
Place (in English) Univ. of Electro-Communications 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Microwave Technologies 
Paper Information
Registration To MW 
Conference Code 2009-09-MW 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Anlysis and Design of a Dynamic Predistorter for WCDMA Handsets Power Amplifier 
Sub Title (in English)  
Keyword(1) Adjacent channel leakage power ratio (ACPR)  
Keyword(2) intermodulation distortion (IMD)  
Keyword(3) linearization  
Keyword(4) nonlinear distortion  
Keyword(5) power amplifiers (PAs)  
Keyword(6) predistorter (PD)  
Keyword(7)  
Keyword(8)  
1st Author's Name Shingo Yamanouchi  
1st Author's Affiliation NEC Corporation (NEC)
2nd Author's Name Yuuichi Aoki  
2nd Author's Affiliation NEC Corporation (NEC)
3rd Author's Name Kazuaki Kunihiro  
3rd Author's Affiliation NEC Corporation (NEC)
4th Author's Name Tomohisa Hirayama  
4th Author's Affiliation NEC Electronics Corporation (NEC Electronics Corp.)
5th Author's Name Takashi Miyazaki  
5th Author's Affiliation NEC Corporation (NEC)
6th Author's Name Hikaru Hida  
6th Author's Affiliation NEC Electronics Corporation (NEC Electronics Corp.)
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Speaker Author-1 
Date Time 2009-09-25 17:15:00 
Presentation Time 25 minutes 
Registration for MW 
Paper # MW2009-90 
Volume (vol) vol.109 
Number (no) no.210 
Page pp.93-98 
#Pages 6 
Date of Issue 2009-09-18 (MW) 

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