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Paper Abstract and Keywords
Presentation 2018-11-22 10:10
Design of Multi-layer Transmit-phased-array with Varactor Diodes Using Matrix Calculation for Two-dimensional Beam-scanning
Tomihiro Ikegami, Kunio Sakakibara, Shota Ino, Nobuyoshi Kikuma (NITech) AP2018-130
Abstract (in Japanese) (See Japanese page) 
(in English) For automotive-radars and next generation mobile communicators, two-dimensional beam scanning systems are required. Various transmit-arrays equiped in front of an aperture antenna are developed to form the beam toward arbitrary angle. Transmit-array is composed of metal planar periodic pattern and dielctric plate. Multi layer is necessary to achieve 360 deg. phase rotation. Transmission phase distribution is controlled by systhesis of reflections and transmittions of all layers. By mounting varactor diodes on the metal patterns and varying reverse bias voltage, transmission phase of each cell are controlled indipendently and beam of transmission wave of transmit-array can be scaned over wide angle. It is difficult to design considering return loss by capasitance variation for desired phase distribution. In this paper, transmit-array with low reflection was designed by matrix calculation of its equivalent circuit. A 5x5 array was designed at 79GHz.
Keyword (in Japanese) (See Japanese page) 
(in English) Metamaterial / Metasurface / Phased Array / Transmit Array / Equivalent Circuit / / /  
Reference Info. IEICE Tech. Rep., vol. 118, no. 310, AP2018-130, pp. 161-166, Nov. 2018.
Paper # AP2018-130 
Date of Issue 2018-11-13 (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)
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Conference Information
Committee RCS AP  
Conference Date 2018-11-20 - 2018-11-22 
Place (in Japanese) (See Japanese page) 
Place (in English) Okinawa Industry Support Center 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Adaptive Antenna, Equalization, Interference Canceler, MIMO, Wireless Communications, etc. 
Paper Information
Registration To AP 
Conference Code 2018-11-RCS-AP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Design of Multi-layer Transmit-phased-array with Varactor Diodes Using Matrix Calculation for Two-dimensional Beam-scanning 
Sub Title (in English)  
Keyword(1) Metamaterial  
Keyword(2) Metasurface  
Keyword(3) Phased Array  
Keyword(4) Transmit Array  
Keyword(5) Equivalent Circuit  
1st Author's Name Tomihiro Ikegami  
1st Author's Affiliation Nagoya Institute of Technology (NITech)
2nd Author's Name Kunio Sakakibara  
2nd Author's Affiliation Nagoya Institute of Technology (NITech)
3rd Author's Name Shota Ino  
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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Speaker Author-1 
Date Time 2018-11-22 10:10:00 
Presentation Time 20 minutes 
Registration for AP 
Paper # AP2018-130 
Volume (vol) vol.118 
Number (no) no.310 
Page pp.161-166 
Date of Issue 2018-11-13 (AP) 

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