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Paper Abstract and Keywords
Presentation 2008-12-18 11:25
Two-bit Variable Frequency Resonator using Transmission Line and RF switches
Jun-ichi Ohtsuka, Hiroki Mori, Ryo-ta Fukuda, Yasushi Yamao (The University of Electro-Communications) RCS2008-156
Abstract (in Japanese) (See Japanese page) 
(in English) Since multiple frequency bands are used for mobile communication systems, the current terminals are installed with multiple radio circuits that cover each frequency band individually and one of them is selected for use. In order to make efficient use of frequency specrum and to reduce circuit scale of terminals in the future, reconfigurable RF circuits will be necessary that are able to change flexibly many frequencies. This paper proposes two-bit variable frequency resonator that can change four resonance frequencies with two RF switches and a transmission line. Three kinds of variable resonance circuits, employing /2 resonance mode, /4 resonance mode and their combined mode, are included in the proposal. After the advantages for the three mode circuits are compared, frequency characteristics are analyzed by circuit simulations. A preliminary prototype using a high dielectric print substrate has been fabricated and evaluated for the /4 resonance mode resonator, which has advantage in conpactness.
Keyword (in Japanese) (See Japanese page) 
(in English) Reconfigurable RF circuit / /4 resonator / Transmission line resonator / RF switch / / / /  
Reference Info. IEICE Tech. Rep., vol. 108, no. 358, RCS2008-156, pp. 31-36, Dec. 2008.
Paper # RCS2008-156 
Date of Issue 2008-12-11 (RCS) 
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 RCS2008-156

Conference Information
Committee RCS SAT  
Conference Date 2008-12-18 - 2008-12-19 
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 RCS 
Conference Code 2008-12-RCS-SAT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Two-bit Variable Frequency Resonator using Transmission Line and RF switches 
Sub Title (in English)  
Keyword(1) Reconfigurable RF circuit  
Keyword(2) /4 resonator  
Keyword(3) Transmission line resonator  
Keyword(4) RF switch  
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1st Author's Name Jun-ichi Ohtsuka  
1st Author's Affiliation The University of Electro-Communications (The University of Electro-Communications)
2nd Author's Name Hiroki Mori  
2nd Author's Affiliation The University of Electro-Communications (The University of Electro-Communications)
3rd Author's Name Ryo-ta Fukuda  
3rd Author's Affiliation The University of Electro-Communications (The University of Electro-Communications)
4th Author's Name Yasushi Yamao  
4th Author's Affiliation The University of Electro-Communications (The University of Electro-Communications)
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Speaker Author-1 
Date Time 2008-12-18 11:25:00 
Presentation Time 25 minutes 
Registration for RCS 
Paper # RCS2008-156 
Volume (vol) vol.108 
Number (no) no.358 
Page pp.31-36 
#Pages 6 
Date of Issue 2008-12-11 (RCS) 

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