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Paper Abstract and Keywords
Presentation 2019-01-25 11:00
Basic Evaluation of a Planar Magic-T Based Balun and Its Application to Variable Phase Shift Balun
Takuya Kitamura, Takayuki Tanaka, Ichihiko Toyoda (Saga Univ.)
Abstract (in Japanese) (See Japanese page) 
(in English) In this study, a novel magic-T based planar balun and its application to a variable phase shift balun are proposed. The proposed balun consists of a planar magic-T and a quarter-wavelength microstrip line only. In addition, by connecting variable capacitances to the proposed balun, a variable phase shift balun which changes the transmission phase in the balanced-unbalanced transformation is realized. Prototypes of the planar balun and variable phase shift balun are designed, fabricated and measured to confirm the proposed concept. Better than 2-dB insertion loss and 10-dB return loss were obtained from 4.5 to 5.8 GHz for the planar balun. Furthermore, better than 3-dB insertion loss and 198-degree phase shift were obtained for the proposed variable phase shift balun. Functions of balance-unbalance transforming and variable phase shift are integrated in a simple structure.
Keyword (in Japanese) (See Japanese page) 
(in English) Balun / Magic-T / Variable Phase Shift / / / / /  
Reference Info. ITE Tech. Rep., vol. 43, no. 2, BCT2019-14, pp. 59-62, Jan. 2019.
Paper # BCT2019-14 
Date of Issue 2019-01-17 (BCT) 
ISSN Print edition: ISSN 1342-6893    Online edition: ISSN 2424-1970
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Conference Information
Conference Date 2019-01-24 - 2019-01-25 
Place (in Japanese) (See Japanese page) 
Place (in English) Kyushu Sangyo Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Students and Young Researcher Session, etc. 
Paper Information
Registration To BCT 
Conference Code 2019-01-BCT-KYUSHU-AP-S-FUKUOKA 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Basic Evaluation of a Planar Magic-T Based Balun and Its Application to Variable Phase Shift Balun 
Sub Title (in English)  
Keyword(1) Balun  
Keyword(2) Magic-T  
Keyword(3) Variable Phase Shift  
1st Author's Name Takuya Kitamura  
1st Author's Affiliation Saga University (Saga Univ.)
2nd Author's Name Takayuki Tanaka  
2nd Author's Affiliation Saga University (Saga Univ.)
3rd Author's Name Ichihiko Toyoda  
3rd Author's Affiliation Saga University (Saga Univ.)
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Speaker Author-1 
Date Time 2019-01-25 11:00:00 
Presentation Time 20 minutes 
Registration for BCT 
Paper # BCT2019-14 
Volume (vol) vol.43 
Number (no) no.2 
Page pp.59-62 
Date of Issue 2019-01-17 (BCT) 

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