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| Presentation | 2007-12-13 14:50 A method to expand variable phase range for phase shifter by 3dB hybrid Hiroyuki Arai (Yokohama Natl. Univ.)  AP2007-119 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Analog phase shifters play important roles in phased array antenna systems and adaptive radiation pattern control for advanced antenna systems. Mechanically controlled analog phase shifters are used for the low speed applications, whereas electrically controlled phase shifters are required for the high speed applications with low loss and wide variable range of phase. This report presents analog phase shifters using 3 dB hybrid coupler with variable capacitors for reflection phase shifters. By the conventional technique of high impedance transmission line connection, a prototype phase shifter in 800 MHz range has achieved the variable phase range of 157.4 with the insertion loss of 0.97 to 1.88 dB and reflection coefficient less than -12.37 dB. A novel method by combining high impedance transmission line and variable quasi-transmission line reactance proposed in this report gives the variable phase range of 264.8 with the insertion loss of 1.58 to 3.16 dB and reflection coefficient less than -9.94 dB. The proposed method increased the variable phase range of 13%. This report also examined a pair of varactor diodes to suppress harmonic component excitation for high power applications. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Array antenna / Analog phase shifter / Reflection phase shifter / Variable capacitance / Quasi-transmission line / Harmonic characteristics / / | |
| Reference Info. | IEICE Tech. Rep., vol. 107, no. 377, AP2007-119, pp. 25-28, Dec. 2007. | |
| Paper # | AP2007-119 | |
| Date of Issue | 2007-12-06 (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 | AP2007-119 |
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| Conference Information | |
| Committee | AP |
| Conference Date | 2007-12-13 - 2007-12-13 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kikai-Shinko-Kaikan Bldg. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | etc. |
| Paper Information | |
| Registration To | AP |
| Conference Code | 2007-12-AP |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A method to expand variable phase range for phase shifter by 3dB hybrid |
| Sub Title (in English) | |
| Keyword(1) | Array antenna |
| Keyword(2) | Analog phase shifter |
| Keyword(3) | Reflection phase shifter |
| Keyword(4) | Variable capacitance |
| Keyword(5) | Quasi-transmission line |
| Keyword(6) | Harmonic characteristics |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Hiroyuki Arai |
| 1st Author's Affiliation | Yokohama National University (Yokohama Natl. Univ.) |
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| Speaker | Author-1 |
| Date Time | 2007-12-13 14:50:00 |
| Presentation Time | 25 minutes |
| Registration for | AP |
| Paper # | AP2007-119 |
| Volume (vol) | vol.107 |
| Number (no) | no.377 |
| Page | pp.25-28 |
| #Pages | 4 |
| Date of Issue | 2007-12-06 (AP) |
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