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Paper Abstract and Keywords
Presentation 2021-09-09 14:00
Matching Circuit Design of Frequency Dispersive Phase Shifter for Dual Band Base Station Antenna
Toshiki Soma, Keizo Cho (Chiba Inst. Tech.), Naobumi Michishita (National Defense Academy), Takayoshi Sasaki, Keisuke Sato, Ichiro Oshima (DKK), Hiroaki Nakabayashi (Chiba Inst. Tech.) AP2021-56
Abstract (in Japanese) (See Japanese page) 
(in English) In a base station antenna that shares multiple frequency bands, The direction of radiation is the same in the shared frequency band, but there is a problem that the beam in the low frequency band spreads due to the difference in electrical length and interferes with the adjacent area.
To solve this problem, a phase shifter has been proposed that can change The direction of radiation in the frequency band by utilizing the phase characteristics of frequency dispersion of the CRLH transmission line.
However, in this phase shifter, the impedance changes depending on the set phase, and matching with the 50Ω line has become an issue.
In this paper, the matching circuit configuration is clarified by equivalent circuit analysis using random search, and the result of designing the realized structure on the electromagnetic field analysis simulator using the value is described.
Keyword (in Japanese) (See Japanese page) 
(in English) Phase Shifter / CRLH-TL / Equivalent Circuit Analysis / / / / /  
Reference Info. IEICE Tech. Rep., vol. 121, no. 168, AP2021-56, pp. 1-5, Sept. 2021.
Paper # AP2021-56 
Date of Issue 2021-09-02 (AP) 
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 AP2021-56

Conference Information
Committee MW AP  
Conference Date 2021-09-09 - 2021-09-10 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Microwave, Millimeter wave 
Paper Information
Registration To AP 
Conference Code 2021-09-MW-AP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Matching Circuit Design of Frequency Dispersive Phase Shifter for Dual Band Base Station Antenna 
Sub Title (in English)  
Keyword(1) Phase Shifter  
Keyword(2) CRLH-TL  
Keyword(3) Equivalent Circuit Analysis  
1st Author's Name Toshiki Soma  
1st Author's Affiliation Chiba Institute of Technology (Chiba Inst. Tech.)
2nd Author's Name Keizo Cho  
2nd Author's Affiliation Chiba Institute of Technology (Chiba Inst. Tech.)
3rd Author's Name Naobumi Michishita  
3rd Author's Affiliation National Defense Academy (National Defense Academy)
4th Author's Name Takayoshi Sasaki  
4th Author's Affiliation DKK Co., Ltd. (DKK)
5th Author's Name Keisuke Sato  
5th Author's Affiliation DKK Co., Ltd. (DKK)
6th Author's Name Ichiro Oshima  
6th Author's Affiliation DKK Co., Ltd. (DKK)
7th Author's Name Hiroaki Nakabayashi  
7th Author's Affiliation Chiba Institute of Technology (Chiba Inst. Tech.)
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Date Time 2021-09-09 14:00:00 
Presentation Time 25 
Registration for AP 
Paper # IEICE-AP2021-56 
Volume (vol) IEICE-121 
Number (no) no.168 
Page pp.1-5 
#Pages IEICE-5 
Date of Issue IEICE-AP-2021-09-02 

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