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Paper Abstract and Keywords
Presentation 2017-04-21 15:00
A Study of Gain reduction with Restricted Amplitude Control Range for Active Phased Array Antennas
Takayuki Nakanishi, Kazunari Kihira, Toru Takahashi, Yoshio Inasawa, Hiroaki Miyashita (Mitsubishi Electric Corp.) AP2017-19
Abstract (in Japanese) (See Japanese page) 
(in English) An active phased array antenna is capable of controlling not only the phase of each element but also the amplitude, and can therefore form a highly accurate beam. When an amplitude distribution range is wide, there occurs the problem of the power efficiency of an amplifier connected to each element decreasing. To operate the amplifier with high efficiency, it is necessary to limit an amplitude control range. This paper proposes a new pattern synthesis algorithm adapted to optimize the excitation amplitudes and phases of an APAA within a predetermined amplitude control range. The proposed method enables designing within the predetermined amplitude control range by introducing a mapping function representing the amplitude of a driven element, although the values of independent variables to be optimized using a conjugate gradient method are not limited. In addition, the proposed method does not require iterative calculation, and makes it possible to obtain the optimum excitation amplitudes and phases by only performing optimization design once. The proposed algorithm will be described while taking null formation by a linear array antenna as an example, and effectiveness will be examined by simulation.
Keyword (in Japanese) (See Japanese page) 
(in English) Active Phased Array Antenna / Pattern Synthesis / Restricted Amplitude / Power Efficiency / Null Beam Forming / / /  
Reference Info. IEICE Tech. Rep., vol. 117, no. 2, AP2017-19, pp. 95-100, April 2017.
Paper # AP2017-19 
Date of Issue 2017-04-13 (AP) 
ISSN Print edition: ISSN 0913-5685    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)
Download PDF AP2017-19

Conference Information
Committee AP  
Conference Date 2017-04-20 - 2017-04-21 
Place (in Japanese) (See Japanese page) 
Place (in English) Osaka university 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Antennas and Propagation 
Paper Information
Registration To AP 
Conference Code 2017-04-AP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Study of Gain reduction with Restricted Amplitude Control Range for Active Phased Array Antennas 
Sub Title (in English)  
Keyword(1) Active Phased Array Antenna  
Keyword(2) Pattern Synthesis  
Keyword(3) Restricted Amplitude  
Keyword(4) Power Efficiency  
Keyword(5) Null Beam Forming  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Takayuki Nakanishi  
1st Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric Corp.)
2nd Author's Name Kazunari Kihira  
2nd Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric Corp.)
3rd Author's Name Toru Takahashi  
3rd Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric Corp.)
4th Author's Name Yoshio Inasawa  
4th Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric Corp.)
5th Author's Name Hiroaki Miyashita  
5th Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric Corp.)
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Speaker Author-1 
Date Time 2017-04-21 15:00:00 
Presentation Time 25 minutes 
Registration for AP 
Paper # AP2017-19 
Volume (vol) vol.117 
Number (no) no.2 
Page pp.95-100 
#Pages 6 
Date of Issue 2017-04-13 (AP) 

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