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| Presentation | 2022-02-18 13:55 [Invited Lecture] Cross-polarization reduction of a Ku-band phased array with a rotatable polarization plane Makoto Sano, Koh Hashimoto, Kentaro Wada (Toshiba)  AP2021-175 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | The authors have been developing a Ku-band phased array that can change the main-beam direction and the polarization plane by the control of the excitation phase of radiating elements. Right-hand and left-hand circular polarizations radiated from dual circularly polarized elements are combined to generate a linearly polarized wave, whose polarization plane changes depending on the phase difference between the two circular polarizations. Beam steering is performed by changing the excitation phase among the radiating elements. In the present work, a four-element linear array of dual circularly polarized patch antennas operating in the Ku-band for uplink (13.75--14.5,GHz) is connected to a beamformer, and beam steering and polarization plane control via excitation phase control are validated by measurement. Furthermore, the cross polarization is reduced to below $-25$,dB by correcting the excitation coefficients, including small amount of amplitude, based on the measured active electric field of the radiating elements. The loss due to the amplitude correction is below 1.2,dB. |
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| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | phased array / polarization agile / Ku band / mobile-satellite communication / array calibration / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 121, no. 370, AP2021-175, pp. 93-98, Feb. 2022. | |
| Paper # | AP2021-175 | |
| Date of Issue | 2022-02-10 (AP) | |
| 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) | |
| Download PDF | AP2021-175 |
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| Conference Information | |
| Committee | AP |
| Conference Date | 2022-02-17 - 2022-02-18 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Industrial Session, Antennas and Propagation |
| Paper Information | |
| Registration To | AP |
| Conference Code | 2022-02-AP |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Cross-polarization reduction of a Ku-band phased array with a rotatable polarization plane |
| Sub Title (in English) | |
| Keyword(1) | phased array |
| Keyword(2) | polarization agile |
| Keyword(3) | Ku band |
| Keyword(4) | mobile-satellite communication |
| Keyword(5) | array calibration |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Makoto Sano |
| 1st Author's Affiliation | Toshiba Corporation (Toshiba) |
| 2nd Author's Name | Koh Hashimoto |
| 2nd Author's Affiliation | Toshiba Corporation (Toshiba) |
| 3rd Author's Name | Kentaro Wada |
| 3rd Author's Affiliation | Toshiba Corporation (Toshiba) |
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| Speaker | Author-1 |
| Date Time | 2022-02-18 13:55:00 |
| Presentation Time | 25 minutes |
| Registration for | AP |
| Paper # | AP2021-175 |
| Volume (vol) | vol.121 |
| Number (no) | no.370 |
| Page | pp.93-98 |
| #Pages | 6 |
| Date of Issue | 2022-02-10 (AP) |
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