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| Presentation | 2008-07-11 14:20 A 425 MHz Narrow Channel Spacing Frequency Synthesizer Younwoong Chung, Junan Lee, Jinwook Burm (Sogang Univ)  ED2008-93 SDM2008-112 Link to ES Tech. Rep. Archives: ED2008-93 SDM2008-112 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | A 425MHz fractional-N frequency synthesizer as shown in Figure1 is implemented by on a 0.18・ CMOS technology with fully integrated LC-VCO and fractional-N division block (sigma delta modulator). A 425MHz fractional-N frequency synthesizer can be adopted for the Industrial, Scientific and Medical radio bands(ISM bands), there are many competitive ongoing research projects for low data rate, power and narrow bandwidth transceiver applications such as remote key entry, home automation, low power telemetry. Usually a fully integrated frequency synthesizer based on LC-VCO is hard to achieve low phase noise characteristics because of modeling of integrated inductor and varactor capacitor. Therefore, it is hard to achieve narrow band characteristics. The main focus of this paper is to design LC-VCO for low phase noise for ISM and, digital blocks using behavioral descriptions, and to implement of fully integrated frequency synthesizer. The designed circuits is simulated that phase noise is -130dBc/Hz, locking time is about 30・ and channel spacing is 12.5 kHz. These results are suitable for standard of ISM band RF transceivers. |
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| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | ISM band / LC-VCO / Frequency synthesizer / / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 108, no. 122, SDM2008-112, pp. 285-290, July 2008. | |
| Paper # | SDM2008-112 | |
| Date of Issue | 2008-07-02 (ED, SDM) | |
| 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 | ED2008-93 SDM2008-112 Link to ES Tech. Rep. Archives: ED2008-93 SDM2008-112 |
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| Conference Information | |
| Committee | SDM ED |
| Conference Date | 2008-07-09 - 2008-07-11 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kaderu２・７ |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | 2008 Asia-Pacific Workshop on Fundamentals and Applications of Advanced Semiconductor Devices |
| Paper Information | |
| Registration To | SDM |
| Conference Code | 2008-07-SDM-ED |
| Language | English |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A 425 MHz Narrow Channel Spacing Frequency Synthesizer |
| Sub Title (in English) | |
| Keyword(1) | ISM band |
| Keyword(2) | LC-VCO |
| Keyword(3) | Frequency synthesizer |
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| 1st Author's Name | Younwoong Chung |
| 1st Author's Affiliation | Sogang University (Sogang Univ) |
| 2nd Author's Name | Junan Lee |
| 2nd Author's Affiliation | Sogang University (Sogang Univ) |
| 3rd Author's Name | Jinwook Burm |
| 3rd Author's Affiliation | Sogang University (Sogang Univ) |
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| Speaker | Author-1 |
| Date Time | 2008-07-11 14:20:00 |
| Presentation Time | 15 minutes |
| Registration for | SDM |
| Paper # | ED2008-93, SDM2008-112 |
| Volume (vol) | vol.108 |
| Number (no) | no.121(ED), no.122(SDM) |
| Page | pp.285-290 |
| #Pages | 6 |
| Date of Issue | 2008-07-02 (ED, SDM) |
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