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Paper Abstract and Keywords
Presentation 2016-04-21 14:25
Efficiency Enhancement of Beam-switching Antenna Optimizing Beam Shape of Taper Structure in Rotman-lens Phase Shifter
Yuta Suzuki, Yasuhiro Imade, Kunio Sakakibara, Nobuyoshi Kikuma (NITech.)
Abstract (in Japanese) (See Japanese page) 
(in English) Multiple-beam antennas can cover wide angle with high gain, therefore, are attractive for high-speed wireless mobile communications and automotive radar systems in the millimeter-wave band. Rotman-lens phase shifter is a feeding circuit for array antennas and different beam-directions can be achieved by different phase inclination to the output ports assigned to each input port. Butler matrix and Blass circuit have similar functions, however, Rotman-lens operates broad frequency band width due to the lens principle. On the other hand, Rotman-lens suffers loss consumed into the dummy ports and reduction of aperture efficiency due to deviation from the uniform output illumination. In this work, angle and width at the connection of all input taper structures to the Rotman lens are adjusted to fit the radiation pattern in the parallel plate transmission line to the whole width of output ports. The effect of this structure is confirmed by simulation in this paper.
Keyword (in Japanese) (See Japanese page) 
(in English) Rotman-lens / beam-switching / feeding circuit / microstrip antenna / millimeter wave / / /  
Reference Info. IEICE Tech. Rep., vol. 116, no. 7, AP2016-4, pp. 19-24, April 2016.
Paper # AP2016-4 
Date of Issue 2016-04-14 (AP) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380

Conference Information
Committee AP  
Conference Date 2016-04-21 - 2016-04-22 
Place (in Japanese) (See Japanese page) 
Place (in English) Chub university 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Antennas and Propagation 
Paper Information
Registration To AP 
Conference Code 2016-04-AP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Efficiency Enhancement of Beam-switching Antenna Optimizing Beam Shape of Taper Structure in Rotman-lens Phase Shifter 
Sub Title (in English)  
Keyword(1) Rotman-lens  
Keyword(2) beam-switching  
Keyword(3) feeding circuit  
Keyword(4) microstrip antenna  
Keyword(5) millimeter wave  
1st Author's Name Yuta Suzuki  
1st Author's Affiliation Nagoya Institute of Technology (NITech.)
2nd Author's Name Yasuhiro Imade  
2nd Author's Affiliation Nagoya Institute of Technology (NITech.)
3rd Author's Name Kunio Sakakibara  
3rd Author's Affiliation Nagoya Institute of Technology (NITech.)
4th Author's Name Nobuyoshi Kikuma  
4th Author's Affiliation Nagoya Institute of Technology (NITech.)
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Date Time 2016-04-21 14:25:00 
Presentation Time 25 
Registration for AP 
Paper # IEICE-AP2016-4 
Volume (vol) IEICE-116 
Number (no) no.7 
Page pp.19-24 
#Pages IEICE-6 
Date of Issue IEICE-AP-2016-04-14 

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