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Paper Abstract and Keywords
Presentation 2018-11-16 11:30
Realization of Flat Passband Characteristics for BPF Using Resistor Loaded Hairpin Shaped Resonators
Tomohiro Tsukushi, Satoshi Ono, Koji Wada (UEC) MW2018-109 Link to ES Tech. Rep. Archives: MW2018-109
Abstract (in Japanese) (See Japanese page) 
(in English) In this study, firstly, the single mode resistor loaded hairpin shaped resonator is proposed. It is shown using some equations and electromagnetic (EM) simulation that unloaded quality factor can be controlled by setting position of resistor. Secondary, an equivalent circuit of a chip resistor is estimated using measured reflection characteristics of a chip resistor. Furthermore, a fourth order bandpass filter (BPF) having good frequency selectivity caused by attenuation poles and a flat passband is constructed by parallel coupling resonators of different values of unloaded quality factors. In this design procedure, the fourth order BPF is divided to two sections which mean a second order BPF with higher unloaded quality factors and that with lower unloaded quality factors. The second order BPF with higher quality factor is constructed using opened loop shaped resonators. Other BPF with lower quality factor is constructed using resistor loaded hairpin shaped resonators. The design parameters as external quality factors, coupling coefficients, resonant frequencies and unloaded quality factors are calculated using coupling matrix. Also, input/output (I/O) transmission lines between two types of BPF structures are configured. Finally, the circuit structure of the fourth order BPF included I/O transmission lines is configured using EM simulator. It is good agreement with design specification. Sharp frequency selectivity and flat passband characteristics of fourth order BPF are realized.
Keyword (in Japanese) (See Japanese page) 
(in English) Resistor loaded hairpin shaped resonator / Opened loop resonator / Bandpass filter (BPF) / Frequency selectivity / Flat passband characteristics / Chip resistor / Coupling matrix /  
Reference Info. IEICE Tech. Rep., vol. 118, no. 308, MW2018-109, pp. 89-94, Nov. 2018.
Paper # MW2018-109 
Date of Issue 2018-11-08 (MW) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
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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 MW2018-109 Link to ES Tech. Rep. Archives: MW2018-109

Conference Information
Committee MW  
Conference Date 2018-11-15 - 2018-11-16 
Place (in Japanese) (See Japanese page) 
Place (in English) Fukue Cultural Hall 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Microwave Technologies 
Paper Information
Registration To MW 
Conference Code 2018-11-MW 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Realization of Flat Passband Characteristics for BPF Using Resistor Loaded Hairpin Shaped Resonators 
Sub Title (in English)  
Keyword(1) Resistor loaded hairpin shaped resonator  
Keyword(2) Opened loop resonator  
Keyword(3) Bandpass filter (BPF)  
Keyword(4) Frequency selectivity  
Keyword(5) Flat passband characteristics  
Keyword(6) Chip resistor  
Keyword(7) Coupling matrix  
Keyword(8)  
1st Author's Name Tomohiro Tsukushi  
1st Author's Affiliation University of Electro-Communications (UEC)
2nd Author's Name Satoshi Ono  
2nd Author's Affiliation University of Electro-Communications (UEC)
3rd Author's Name Koji Wada  
3rd Author's Affiliation University of Electro-Communications (UEC)
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Speaker Author-1 
Date Time 2018-11-16 11:30:00 
Presentation Time 25 minutes 
Registration for MW 
Paper # MW2018-109 
Volume (vol) vol.118 
Number (no) no.308 
Page pp.89-94 
#Pages
Date of Issue 2018-11-08 (MW) 


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