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| Presentation | 2016-05-19 15:50 A Novel 4-Port Lumped Element Circulator for High-isolation Front-end system Kei Matsutani, Takaya Wada, Yusuke Kusumoto, Masayoshi Koshino, Makoto Kawashima (Murata)  MW2016-11 Link to ES Tech. Rep. Archives: MW2016-11 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | A novel 4-port circulator for multi-standard and multi-band cellular handsets has been successfully developed by using the Core-Circulator technique. The circulator is realized with lumped element circuits and a weak magnetic field operation. The insertion loss of 1.3dB maximum in 777-787MHz (Band 13) and the TX-RX isolation of 20dB minimum in 35% fractional bandwidth which is including cellular whole low-band have been obtained. Its size is 2.0 mm width X 2.0 mm length X 0.5 mm height. Experimental results of the combination of conventional SAW filters and the developed 4-port circulator have exhibited an extremely high isolation performance of 79dB and robustness against variations of antenna impedance. |
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| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Lumped element microwave circuit / circulator / duplexer / ferrites / microwave devices / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 116, no. 51, MW2016-11, pp. 11-14, May 2016. | |
| Paper # | MW2016-11 | |
| Date of Issue | 2016-05-12 (MW) | |
| 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 | MW2016-11 Link to ES Tech. Rep. Archives: MW2016-11 |
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| Conference Information | |
| Committee | MW |
| Conference Date | 2016-05-19 - 2016-05-20 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kyoto Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Microwave Technologies |
| Paper Information | |
| Registration To | MW |
| Conference Code | 2016-05-MW |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Novel 4-Port Lumped Element Circulator for High-isolation Front-end system |
| Sub Title (in English) | |
| Keyword(1) | Lumped element microwave circuit |
| Keyword(2) | circulator |
| Keyword(3) | duplexer |
| Keyword(4) | ferrites |
| Keyword(5) | microwave devices |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Kei Matsutani |
| 1st Author's Affiliation | Murata Manufacturing Co., Ltd. (Murata) |
| 2nd Author's Name | Takaya Wada |
| 2nd Author's Affiliation | Murata Manufacturing Co., Ltd. (Murata) |
| 3rd Author's Name | Yusuke Kusumoto |
| 3rd Author's Affiliation | Murata Manufacturing Co., Ltd. (Murata) |
| 4th Author's Name | Masayoshi Koshino |
| 4th Author's Affiliation | Murata Manufacturing Co., Ltd. (Murata) |
| 5th Author's Name | Makoto Kawashima |
| 5th Author's Affiliation | Murata Manufacturing Co., Ltd. (Murata) |
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| Speaker | Author-1 |
| Date Time | 2016-05-19 15:50:00 |
| Presentation Time | 25 minutes |
| Registration for | MW |
| Paper # | MW2016-11 |
| Volume (vol) | vol.116 |
| Number (no) | no.51 |
| Page | pp.11-14 |
| #Pages | 4 |
| Date of Issue | 2016-05-12 (MW) |
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