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Paper Abstract and Keywords
Presentation 2010-01-15 10:55
A Low-Voltage, Broadband Operation HBT Power Amplifier for CDMA Applications
Kazuya Yamamoto, Atsushi Okamura, Takayuki Matsuzuka, Yutaka Yoshii, Satoshi Suzuki, Masatoshi Nakayama, Teruyuki Shimura, Naohito Yoshida (Mitsubishi Electric Corp.) ED2009-193 MW2009-176
Abstract (in Japanese) (See Japanese page) 
(in English) This paper describes circuit design and measurement results of an HBT MMIC power amplifier module (PA) operating with a 2.5-V low reference (Vref) and 2.8-V low collector supply voltages (Vcc). While covering 824-925-MHz broadband CDMA operation at 2.8-V Vcc, the PA allows a 1.1-V low Vcc and 18-dBm Pout operation. This is realized by an on-chip step quiescent current selector monitoring collector voltage. Measurement results under the 2.8/1.1-V Vcc and 2.5-V Vref bias conditions show that the PA meets J-/W-CDMA power and distortion specifications sufficiently over a wide temperature range from –20 to 85°C while operating over a wideband from 824 to 925 MHz. For J-CDMA (IS-95B) modulation, the PA can deliver a 28-dBm Pout, a 36% PAE, and a –50-dBc ACPR, while a 29-dBm Pout, a 38% PAE, and a –40-dBc ACLR are achieved for W-CDMA (R99) modulation. In addition, the PA is capable of delivering a 18-dBm Pout and more than 23% PAE under 824-925-MHz and 1.1-V J-CDMA modulation test conditions. To the best of author’s knowledge, this is the first report on a broadband CDMA PA operating with low Vref and low Vcc.
Keyword (in Japanese) (See Japanese page) 
(in English) Power Amplifiers / HBT / MMIC / CDMA / Low-voltage / Broadband / /  
Reference Info. IEICE Tech. Rep., vol. 109, no. 360, ED2009-193, pp. 105-110, Jan. 2010.
Paper # ED2009-193 
Date of Issue 2010-01-06 (ED, 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 ED2009-193 MW2009-176

Conference Information
Committee ED MW  
Conference Date 2010-01-13 - 2010-01-15 
Place (in Japanese) (See Japanese page) 
Place (in English) Kikai-Shinko-Kaikan Bldg 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To ED 
Conference Code 2010-01-ED-MW 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Low-Voltage, Broadband Operation HBT Power Amplifier for CDMA Applications 
Sub Title (in English)  
Keyword(1) Power Amplifiers  
Keyword(2) HBT  
Keyword(3) MMIC  
Keyword(4) CDMA  
Keyword(5) Low-voltage  
Keyword(6) Broadband  
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Keyword(8)  
1st Author's Name Kazuya Yamamoto  
1st Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric Corp.)
2nd Author's Name Atsushi Okamura  
2nd Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric Corp.)
3rd Author's Name Takayuki Matsuzuka  
3rd Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric Corp.)
4th Author's Name Yutaka Yoshii  
4th Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric Corp.)
5th Author's Name Satoshi Suzuki  
5th Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric Corp.)
6th Author's Name Masatoshi Nakayama  
6th Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric Corp.)
7th Author's Name Teruyuki Shimura  
7th Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric Corp.)
8th Author's Name Naohito Yoshida  
8th Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric Corp.)
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Speaker Author-1 
Date Time 2010-01-15 10:55:00 
Presentation Time 25 minutes 
Registration for ED 
Paper # ED2009-193, MW2009-176 
Volume (vol) vol.109 
Number (no) no.360(ED), no.361(MW) 
Page pp.105-110 
#Pages 6 
Date of Issue 2010-01-06 (ED, MW) 

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