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Paper Abstract and Keywords
Presentation 2023-05-23 10:40
A Study of Wide-null Forming in Near Field Region by a Phased Array Antenna
Takashi Uno, Narihiro Nakamoto, Toru Fukasawa, Toru Takahashi, Yoshio Inasawa (Mitsubishi Electric Corp.) SANE2023-4
Abstract (in Japanese) (See Japanese page) 
(in English) In combining multiple radars and receiving reflected waves from targets of other radars, direct waves from other radars are also received, degrading the S/N ratio. In order to reduce these direct waves, it is necessary to form a wide null on the nearby antenna plane. Conventionally, there is an excitation distribution design method that forms a null point in the near field, but there are cases where a wide-planar null is not formed. In this paper, we propose a wide-null forming method in near field region by a phased array antenna. In the proposed method, the evaluation function is defined as the sum of the power in the null
target region in the near field and the difference between the gain at the beam scanning angle and the desired gain. As a result of applying the proposed method to a 256-element array antenna, it is confirmed by analysis that a planar null of less than −40 dB is formed in the null target region. As a result of the experimental evaluation of this method, a null of less than −37.8 dB is formed in the null target region, demonstrating the effectiveness of the proposed method.
Keyword (in Japanese) (See Japanese page) 
(in English) Phased Array Antenna / Null / Near Field / Excitation Distribution / / / /  
Reference Info. IEICE Tech. Rep., vol. 123, no. 46, SANE2023-4, pp. 18-23, May 2023.
Paper # SANE2023-4 
Date of Issue 2023-05-16 (SANE) 
ISSN Online edition: ISSN 2432-6380
Copyright
and
reproduction		 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 SANE  
Conference Date 2023-05-23 - 2023-05-23 
Place (in Japanese) (See Japanese page) 
Place (in English) Information Technology R & D Center, MITSUBISHI Electric Corp. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Radar, EW and generals 
Paper Information
Registration To SANE 
Conference Code 2023-05-SANE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Study of Wide-null Forming in Near Field Region by a Phased Array Antenna 
Sub Title (in English)  
Keyword(1) Phased Array Antenna  
Keyword(2) Null  
Keyword(3) Near Field  
Keyword(4) Excitation Distribution  
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1st Author's Name Takashi Uno  
1st Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric Corp.)
2nd Author's Name Narihiro Nakamoto  
2nd Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric Corp.)
3rd Author's Name Toru Fukasawa  
3rd Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric Corp.)
4th Author's Name Toru Takahashi  
4th Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric Corp.)
5th Author's Name Yoshio Inasawa  
5th Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric Corp.)
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Speaker Author-1 
Date Time 2023-05-23 10:40:00 
Presentation Time 20 minutes 
Registration for SANE 
Paper # SANE2023-4 
Volume (vol) vol.123 
Number (no) no.46 
Page pp.18-23 
#Pages 6 
Date of Issue 2023-05-16 (SANE) 

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