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| 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 |
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| 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 |
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| 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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