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| Presentation | 2010-12-17 09:00 Analysis and evaluation of oscillator Q for the FET oscillators with a coaxial resonator Tomoya Morimasa, Kenji Itoh, Shin-ichi Betsudan, Shigeru Makino, Tetsuo Hirota, Keisuke Noguchi (Kanazawa Inst. of Tech), Takashi Ohira (Toyohashi Univ. of Tech), Masaomi Tsuru, Hiroshi Ikematsu (Mitsubishi Electric)  MW2010-128 Link to ES Tech. Rep. Archives: MW2010-128 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Leeson's formula is well-known one for phase noise behaviour in oscillators. However relationship between Q factor Qosc in Leeson's formula and resonator's Q has not been analyzed in past works. Recently Ohira clarified the method to formulate oscillators' Q factor Qosc from circuit parameters. In this report, formulation of Qosc by Ohira's method is presented for the oscillator with the coaxial resonator. Furthermore the relationship between Qosc and resonator's Q is formulated and the formula represents that Qosc is proportional to resonator's Q under some assumptions. This is the well-known fact with experimental approaches, and is the first analytical clarification. In addition to above, experimental investigations of phase noise are demonstrated for several oscillators with different resonator's Q factors. Measured phase noise is agreed with theoretical prediction by analyzed Qosc within 1.3dB. This is the first experimental confirmation of Qosc defined by Ohira. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Q factor / phase noise / oscillator / resonator / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 110, no. 343, MW2010-128, pp. 35-40, Dec. 2010. | |
| Paper # | MW2010-128 | |
| Date of Issue | 2010-12-09 (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 | MW2010-128 Link to ES Tech. Rep. Archives: MW2010-128 |
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| Conference Information | |
| Committee | MW |
| Conference Date | 2010-12-16 - 2010-12-17 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kanazawa Inst. of Tech. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | MW |
| Conference Code | 2010-12-MW |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Analysis and evaluation of oscillator Q for the FET oscillators with a coaxial resonator |
| Sub Title (in English) | |
| Keyword(1) | Q factor |
| Keyword(2) | phase noise |
| Keyword(3) | oscillator |
| Keyword(4) | resonator |
| Keyword(5) | |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Tomoya Morimasa |
| 1st Author's Affiliation | Kanazawa Institute of Technology (Kanazawa Inst. of Tech) |
| 2nd Author's Name | Kenji Itoh |
| 2nd Author's Affiliation | Kanazawa Institute of Technology (Kanazawa Inst. of Tech) |
| 3rd Author's Name | Shin-ichi Betsudan |
| 3rd Author's Affiliation | Kanazawa Institute of Technology (Kanazawa Inst. of Tech) |
| 4th Author's Name | Shigeru Makino |
| 4th Author's Affiliation | Kanazawa Institute of Technology (Kanazawa Inst. of Tech) |
| 5th Author's Name | Tetsuo Hirota |
| 5th Author's Affiliation | Kanazawa Institute of Technology (Kanazawa Inst. of Tech) |
| 6th Author's Name | Keisuke Noguchi |
| 6th Author's Affiliation | Kanazawa Institute of Technology (Kanazawa Inst. of Tech) |
| 7th Author's Name | Takashi Ohira |
| 7th Author's Affiliation | Toyohashi University of technology (Toyohashi Univ. of Tech) |
| 8th Author's Name | Masaomi Tsuru |
| 8th Author's Affiliation | Mitsubishi Electric (Mitsubishi Electric) |
| 9th Author's Name | Hiroshi Ikematsu |
| 9th Author's Affiliation | Mitsubishi Electric (Mitsubishi Electric) |
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| Speaker | Author-1 |
| Date Time | 2010-12-17 09:00:00 |
| Presentation Time | 25 minutes |
| Registration for | MW |
| Paper # | MW2010-128 |
| Volume (vol) | vol.110 |
| Number (no) | no.343 |
| Page | pp.35-40 |
| #Pages | 6 |
| Date of Issue | 2010-12-09 (MW) |
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