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Paper Abstract and Keywords
Presentation 2020-01-23 13:20
[Poster Presentation] Dielectric loss Reduction of Liquid Crystal for Microwave Frequency Phase Shifters
Yoichi Murakami, Yosei Shibata, Hiroyasu Sato, Takahiro ishinabe, Qiang Chen, Hideo Fujikake (Tohoku Univ.)
Abstract (in Japanese) (See Japanese page) 
(in English) In this study, we evaluated the relationship between the molecular structure of liquid crystal exhibiting a nematic phase at room temperature and dielectric loss in the microwave band for realization of liquid crystal phase shifter. The phase shifter can continuously control the microwave band beam along any direction. As the results, we clarified that relatively rigid molecular structure, fluorine in polar group and the temperature reduction in the operating environment leads to a decreasing of dielectric loss. We considered that suppression of thermal vibration in liquid crystal molecules improved dielectric loss.
Keyword (in Japanese) (See Japanese page) 
(in English) nematic liquid crystal / phase shifter / molecular vibration / dielectric loss / / / /  
Reference Info. ITE Tech. Rep., vol. 44, no. 1, IDY2020-5, pp. 13-16, Jan. 2020.
Paper # IDY2020-5 
Date of Issue 2020-01-16 (IDY) 
ISSN Print edition: ISSN 1342-6893  Online edition: ISSN 2424-1970
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Conference Information
Committee IDY IEICE-EID IEIJ-SSL SID-JC IEE-EDD  
Conference Date 2020-01-23 - 2020-01-24 
Place (in Japanese) (See Japanese page) 
Place (in English) Tottori Univ 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To IDY 
Conference Code 2020-01-IDY-EID-SSL-JC-EDD 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Dielectric loss Reduction of Liquid Crystal for Microwave Frequency Phase Shifters 
Sub Title (in English)  
Keyword(1) nematic liquid crystal  
Keyword(2) phase shifter  
Keyword(3) molecular vibration  
Keyword(4) dielectric loss  
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1st Author's Name Yoichi Murakami  
1st Author's Affiliation Tohoku University (Tohoku Univ.)
2nd Author's Name Yosei Shibata  
2nd Author's Affiliation Tohoku University (Tohoku Univ.)
3rd Author's Name Hiroyasu Sato  
3rd Author's Affiliation Tohoku University (Tohoku Univ.)
4th Author's Name Takahiro ishinabe  
4th Author's Affiliation Tohoku University (Tohoku Univ.)
5th Author's Name Qiang Chen  
5th Author's Affiliation Tohoku University (Tohoku Univ.)
6th Author's Name Hideo Fujikake  
6th Author's Affiliation Tohoku University (Tohoku Univ.)
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Speaker
Date Time 2020-01-23 13:20:00 
Presentation Time
Registration for IDY 
Paper # ITE-IDY2020-5 
Volume (vol) ITE-44 
Number (no) no.1 
Page pp.13-16 
#Pages ITE-4 
Date of Issue ITE-IDY-2020-01-16 


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