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Paper Abstract and Keywords
Presentation 2008-01-25 16:10
A Low Spurious SiGe-MMIC Direct Conversion Transceiver for Cognitive Radio Using 2 fLO LO Switching Configuration
Koji Tsutsumi, Fumiki Onoma, Jun Koide, Mikio Uesugi, Noriharu Suematsu (Mitsubishi Electric), Hiroshi Harada (NICT) SR2007-84
Abstract (in Japanese) (See Japanese page) 
(in English) An RF-IC for multi-mode cognitive wireless system is required multi-band / multi-mode characteristics. One of the difficult issues for multi-band / multi-mode RF-IC is to lower the Tx spurious. In this paper, 2$f_{LO}$ LO switching configuration is proposed for low Tx spurious characteristics. Theoretically, this configuration doubles offset frequency of adjacent Tx spurious in FDD mode, compared to the conventional configuration. The direct conversion transceiver MMIC using 2fLO LO switching configuration is fabricated in 0.18m SiGe-BiCMOS process. Measured results show a high accurate modulation characteristics over 400M-6GHz, and low Tx spurious characteristics in FDD mode.
Keyword (in Japanese) (See Japanese page) 
(in English) Cognitive Radio / Direct conversion / SiGe-MMIC / isolation / FDD / TDD / /  
Reference Info. IEICE Tech. Rep., vol. 107, no. 452, SR2007-84, pp. 115-120, Jan. 2008.
Paper # SR2007-84 
Date of Issue 2008-01-17 (SR) 
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 SR  
Conference Date 2008-01-24 - 2008-01-25 
Place (in Japanese) (See Japanese page) 
Place (in English) Tateyama Prince hotel (Ohmachi city, Nagano prefecture) 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To SR 
Conference Code 2008-01-SR 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Low Spurious SiGe-MMIC Direct Conversion Transceiver for Cognitive Radio Using 2 fLO LO Switching Configuration 
Sub Title (in English)  
Keyword(1) Cognitive Radio  
Keyword(2) Direct conversion  
Keyword(3) SiGe-MMIC  
Keyword(4) isolation  
Keyword(5) FDD  
Keyword(6) TDD  
Keyword(7)  
Keyword(8)  
1st Author's Name Koji Tsutsumi  
1st Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric)
2nd Author's Name Fumiki Onoma  
2nd Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric)
3rd Author's Name Jun Koide  
3rd Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric)
4th Author's Name Mikio Uesugi  
4th Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric)
5th Author's Name Noriharu Suematsu  
5th Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric)
6th Author's Name Hiroshi Harada  
6th Author's Affiliation National Institute of Information and Communications Technology (NICT)
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Speaker Author-1 
Date Time 2008-01-25 16:10:00 
Presentation Time 25 minutes 
Registration for SR 
Paper # SR2007-84 
Volume (vol) vol.107 
Number (no) no.452 
Page pp.115-120 
#Pages 6 
Date of Issue 2008-01-17 (SR) 

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