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| Presentation | 2012-03-02 16:00 Development of Low-Pass-Filter with Voltage Variable Cutoff Frequency Goh Kobayashi, Yoshiki Kayano, Hiroshi Inoue (Akita Univ.)  EMD2011-138 Link to ES Tech. Rep. Archives: EMD2011-138 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | A wideband variable frequency oscillator (Voltage Controlled Oscillator) can be used in the area of signal processing. The distortion of output voltage of the VCO should be suppressed for the performance. In order to realize the single-chip VCO with wideband oscillation for diagnosing EMC，we newly attempt to establish the method for designing Low-Pass-Filter (LPF) with voltage variable cutoff frequency, which corresponds to the oscillation frequency of the VCO. The LPF consists of MOS transistor and capacitor. The resistor between drain and source in MOS transistor behaves as voltage variable resistor. Firstly，effects of the circuit configuration and the parasitic capacitor in the MOS transistor on the frequency characteristics are discussed by circuit simulation. Secondly, it is demonstrated that the use of multistage is applicable to improve the frequency characteristics of the LPF. This study reveals the basic characteristics of the single-chip system for EMC application. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Filter / cutoff frequency / variable resistor / MOS transistor / VCO / harmonic / / | |
| Reference Info. | IEICE Tech. Rep., vol. 111, no. 460, EMD2011-138, pp. 49-52, March 2012. | |
| Paper # | EMD2011-138 | |
| Date of Issue | 2012-02-24 (EMD) | |
| 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 | EMD2011-138 Link to ES Tech. Rep. Archives: EMD2011-138 |
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| Conference Information | |
| Committee | EMD |
| Conference Date | 2012-03-02 - 2012-03-02 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Tanagawa Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | EMD |
| Conference Code | 2012-03-EMD |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Development of Low-Pass-Filter with Voltage Variable Cutoff Frequency |
| Sub Title (in English) | |
| Keyword(1) | Filter |
| Keyword(2) | cutoff frequency |
| Keyword(3) | variable resistor |
| Keyword(4) | MOS transistor |
| Keyword(5) | VCO |
| Keyword(6) | harmonic |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Goh Kobayashi |
| 1st Author's Affiliation | Akita University (Akita Univ.) |
| 2nd Author's Name | Yoshiki Kayano |
| 2nd Author's Affiliation | Akita University (Akita Univ.) |
| 3rd Author's Name | Hiroshi Inoue |
| 3rd Author's Affiliation | Akita University (Akita Univ.) |
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| Speaker | Author-1 |
| Date Time | 2012-03-02 16:00:00 |
| Presentation Time | 15 minutes |
| Registration for | EMD |
| Paper # | EMD2011-138 |
| Volume (vol) | vol.111 |
| Number (no) | no.460 |
| Page | pp.49-52 |
| #Pages | 4 |
| Date of Issue | 2012-02-24 (EMD) |
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