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Paper Abstract and Keywords
Presentation 2007-09-28 09:30
The Optimal design of the T-type NULL Circuit with a Quartz Crystal Resonator
Koichi Hirama (Univ. Yananashi), Takehiko Adachi (Yokohama Nat. Univ.), Yasuhiko Nakagawa (Univ. Yananashi), Takeshi Yanagisawa (Tokyo Inst. Tech.) US2007-43
Abstract (in Japanese) (See Japanese page) 
(in English) We searched in an open-loop state for two conditions that give the optimal setup of circuit constants in a T-type null circuit with three branches comprising a coil in one series branch, a capacitor in the other series branch, and a crystal resonator in a shunt branch in order to improve the short-term frequency stability. First, we searched for conditions that maximize the effective Q value of the circuit. Second, we defined an evaluation index as the product of the contribution index and power transfer index. The contribution index is expressed as the ratio of the relative change in the transmission loss of the circuit to the relative change in the impedance of the crystal resonator. Consequently, the addition of the coil enables us to set up a wide range of circuit constant values.
Keyword (in Japanese) (See Japanese page) 
(in English) T-type null circuit / Coil / Quartz resonator / Effective quality factor / Relative sensitivity ratio / Short term frequency stability / /  
Reference Info. IEICE Tech. Rep., vol. 107, no. 233, US2007-43, pp. 1-6, Sept. 2007.
Paper # US2007-43 
Date of Issue 2007-09-21 (US) 
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 US  
Conference Date 2007-09-27 - 2007-09-28 
Place (in Japanese) (See Japanese page) 
Place (in English) Tohoku Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) General 
Paper Information
Registration To US 
Conference Code 2007-09-US 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) The Optimal design of the T-type NULL Circuit with a Quartz Crystal Resonator 
Sub Title (in English)  
Keyword(1) T-type null circuit  
Keyword(2) Coil  
Keyword(3) Quartz resonator  
Keyword(4) Effective quality factor  
Keyword(5) Relative sensitivity ratio  
Keyword(6) Short term frequency stability  
Keyword(7)  
Keyword(8)  
1st Author's Name Koichi Hirama  
1st Author's Affiliation University of Yamanashi (Univ. Yananashi)
2nd Author's Name Takehiko Adachi  
2nd Author's Affiliation Ykohama National University (Yokohama Nat. Univ.)
3rd Author's Name Yasuhiko Nakagawa  
3rd Author's Affiliation University of Yamanashi (Univ. Yananashi)
4th Author's Name Takeshi Yanagisawa  
4th Author's Affiliation tokyo Institute of Technology (Tokyo Inst. Tech.)
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Speaker Author-1 
Date Time 2007-09-28 09:30:00 
Presentation Time 30 minutes 
Registration for US 
Paper # US2007-43 
Volume (vol) vol.107 
Number (no) no.233 
Page pp.1-6 
#Pages 6 
Date of Issue 2007-09-21 (US) 

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