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Paper Abstract and Keywords
Presentation 2015-11-19 15:15
Bandwidth Enhancement of Negative Capacitance Generated by Operational Amplifier Based Negative Impedance Converter
Kenichi Matsumoto, Shoji Yamanaka, Yasushi Horii (Kansai Univ) MW2015-127
Abstract (in Japanese) (See Japanese page) 
(in English) We have succeeded to generate non-Foster reactance (negative capacitance) by using an operational amplifier OPA690 (Texas Instruments, GB product of 500MHz), but only in a frequency range from 40 MHz to 160 MHz so far. This report indicates that the upper limit of non-Foster frequency, 160 MHz, is determined by undesired inductance of circuit patterns on PCB, and proposes a method to suppress the influence of the pattern inductance by utilizing the differential behavior of operational amplifiers. In the demonstration, a negative capacitance of about -75 pF±10% is generated successfully from 64 MHz to 180 MHz.
Keyword (in Japanese) (See Japanese page) 
(in English) Negative impedance converter / NIC / non-Foster / Negative capacitance / / / /  
Reference Info. IEICE Tech. Rep., vol. 115, no. 314, MW2015-127, pp. 41-46, Nov. 2015.
Paper # MW2015-127 
Date of Issue 2015-11-12 (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 MW2015-127

Conference Information
Committee MW  
Conference Date 2015-11-19 - 2015-11-20 
Place (in Japanese) (See Japanese page) 
Place (in English) Univ. of the Ryukyus 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Microwave Technologies 
Paper Information
Registration To MW 
Conference Code 2015-11-MW 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Bandwidth Enhancement of Negative Capacitance Generated by Operational Amplifier Based Negative Impedance Converter 
Sub Title (in English)  
Keyword(1) Negative impedance converter  
Keyword(2) NIC  
Keyword(3) non-Foster  
Keyword(4) Negative capacitance  
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1st Author's Name Kenichi Matsumoto  
1st Author's Affiliation Kansai University (Kansai Univ)
2nd Author's Name Shoji Yamanaka  
2nd Author's Affiliation Kansai University (Kansai Univ)
3rd Author's Name Yasushi Horii  
3rd Author's Affiliation Kansai University (Kansai Univ)
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Speaker Author-1 
Date Time 2015-11-19 15:15:00 
Presentation Time 30 minutes 
Registration for MW 
Paper # MW2015-127 
Volume (vol) vol.115 
Number (no) no.314 
Page pp.41-46 
#Pages 6 
Date of Issue 2015-11-12 (MW) 

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