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| Presentation | 2007-03-09 13:30 [Invited Talk] * Makoto Taromaru (ATR)  RCS2006-276 MW2006-194 Link to ES Tech. Rep. Archives: MW2006-194 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | A new amplitude modulation scheme and its transmitter architecture are proposed. It modulates a constant envelope radio frequency (RF) signal, which may be the carrier wave or angle-modulated, with pulse-width modulated (PWM) amplitude signal by on-off keying as “burst width modulation” at the final stage. Through a band-pass filter, the burst-width modulated signal is transformed to an amplitude modulated transmitting signal whose envelope is proportional to the duty ratio of the PWM signal. The final stage amplifier can be operated on class-C bias point or by class-F mode in saturation region with high power efficiency at any time since the envelopes of input signals is constant as EER (Envelope Elimination and Restoration), or zero. In this talk, the signal processing of the proposed scheme is shown and the spurious characteristics as well as the criterion for selecting the PWM carrier frequency are discussed theoretically. This scheme is applicable to arbitrary modulation, band-limited PSK, multilevel QAM, and etc. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | efficiency / power apmplifier / amplitude modulation / PWM / EER / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 106, no. 560, MW2006-194, pp. 7-10, March 2007. | |
| Paper # | MW2006-194 | |
| Date of Issue | 2007-02-28 (RCS), 2007-03-02 (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 | RCS2006-276 MW2006-194 Link to ES Tech. Rep. Archives: MW2006-194 |
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| Conference Information | |
| Committee | RCS MoNA WBS SR MW |
| Conference Date | 2007-03-07 - 2007-03-09 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | YRP |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | MW |
| Conference Code | 2007-03-RCS-MoMuC-WBS-SR-MW |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | * |
| Sub Title (in English) | |
| Keyword(1) | efficiency |
| Keyword(2) | power apmplifier |
| Keyword(3) | amplitude modulation |
| Keyword(4) | PWM |
| Keyword(5) | EER |
| Keyword(6) | |
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| Keyword(8) | |
| 1st Author's Name | Makoto Taromaru |
| 1st Author's Affiliation | ATR (ATR) |
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| Speaker | Author-1 |
| Date Time | 2007-03-09 13:30:00 |
| Presentation Time | 30 minutes |
| Registration for | MW |
| Paper # | RCS2006-276, MW2006-194 |
| Volume (vol) | vol.106 |
| Number (no) | no.555(RCS), no.560(MW) |
| Page | pp.167-170(RCS), pp.7-10(MW) |
| #Pages | 4 |
| Date of Issue | 2007-02-28 (RCS), 2007-03-02 (MW) |
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