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Paper Abstract and Keywords
Presentation 2008-11-21 09:55
Frequency and Gain Tunable, Multiple Bandpass or Bandstop Differential Amplifiers
Toshio Shinohara, Masaki Shirata, Kazuyoshi Sakamoto, Yasushi Itoh (SHonan IT) MW2008-134 Link to ES Tech. Rep. Archives: MW2008-134
Abstract (in Japanese) (See Japanese page) 
(in English) Design, fabrication and performance of the frequency and gain tunable, multiple bandpass or bandstop differential amplifiers are presented. Active load circuits comprised of a varactor diode and a bipolar transistor are connected in parallel with LC resonators to achieve frequency and gain tunable performance. In addition, the individual resonant frequency of the LC resonator is adjusted to vary the number of matching bands. With the use of 0.35 m SiGe HBTs and C2V/C10V=2.5 varactor diodes, the implemented amplifiers show a frequency tunable range of 0.5 to 1.3GHz with a gain variation of 8.4dB for the bandpass amplifier as well as a frequency tunable range of 0.53 to 1.16GHz with a gain variation of 9.3dB for the bandstop amplifier. The number of bands can be changed from 1 to 2.
Keyword (in Japanese) (See Japanese page) 
(in English) Differential / Amplifier / SiGe HBT / Microwave / Frequency Tunable / Gain Variable / Multi-band /  
Reference Info. IEICE Tech. Rep., vol. 108, no. 311, MW2008-134, pp. 91-96, Nov. 2008.
Paper # MW2008-134 
Date of Issue 2008-11-13 (MW) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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 MW2008-134 Link to ES Tech. Rep. Archives: MW2008-134

Conference Information
Committee MW  
Conference Date 2008-11-20 - 2008-11-21 
Place (in Japanese) (See Japanese page) 
Place (in English) Nagasaki-Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To MW 
Conference Code 2008-11-MW 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Frequency and Gain Tunable, Multiple Bandpass or Bandstop Differential Amplifiers 
Sub Title (in English)  
Keyword(1) Differential  
Keyword(2) Amplifier  
Keyword(3) SiGe HBT  
Keyword(4) Microwave  
Keyword(5) Frequency Tunable  
Keyword(6) Gain Variable  
Keyword(7) Multi-band  
1st Author's Name Toshio Shinohara  
1st Author's Affiliation Shonan Institute of Technology (SHonan IT)
2nd Author's Name Masaki Shirata  
2nd Author's Affiliation Shonan Institute of Technology (SHonan IT)
3rd Author's Name Kazuyoshi Sakamoto  
3rd Author's Affiliation Shonan Institute of Technology (SHonan IT)
4th Author's Name Yasushi Itoh  
4th Author's Affiliation Shonan Institute of Technology (SHonan IT)
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Date Time 2008-11-21 09:55:00 
Presentation Time 25 
Registration for MW 
Paper # IEICE-MW2008-134 
Volume (vol) IEICE-108 
Number (no) no.311 
Page pp.91-96 
#Pages IEICE-6 
Date of Issue IEICE-MW-2008-11-13 

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