| IEICE Technical Committee Submission System Conference Paper's Information |
Online Proceedings [Sign in] Tech. Rep. Archives |
| Go Top Page | Go Previous | [Japanese] / [English] |
| Paper Abstract and Keywords | ||
| Presentation | 2009-03-04 13:00 Experimental Study on Efficiency of EER Transmitter Using Envelope PWM Satoshi Tsukamoto, Takayuki Umaba, Keizo Inagaki, Makoto Taromaru (ATR)  SR2008-88 |
|
| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Improving efficiency of radio power amplifier has been an important issue for portable radio terminals since it directly affects the battery life. Class-E and F amplifiers, which control the output harmonics effectively, are typical approaches to realize high efficiency for the transmitters of constant envelope modulation. For linear (non-constant envelope) modulations, however, class-A amplifiers have to be operated with enough back-off in low efficiency. OFDM modulation is getting widely used recently, however the efficiency of the power amplifier is quite low since it requires much more back-off due to the high PAPR (peak to average power ratio). EER (envelope elimination and restoration) is a promising solution to this problem, and the authors have studied a new EER with "envelope PWM" that switches the phase modulated RF signal at the input of the final stage power amplifier by the PWM signal of the amplitude/envelope component of the modulation. In this paper, power added efficiency (PAE) is evaluated when a carrier wave signal is switched by the switching pulses of several duty ratios as the PWM signal by experiments. Experimental results show that the PAE is improved comparing to that of the class-A amplifier at the corresponding operating point to the each duty ratio. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | power added effeciency / power amplifier / pulse width moduration / EER / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 108, no. 446, SR2008-88, pp. 1-6, March 2009. | |
| Paper # | SR2008-88 | |
| Date of Issue | 2009-02-25 (SR) | |
| 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 | SR2008-88 |
|
| Conference Information | |
| Committee | RCS AN MoNA SR |
| Conference Date | 2009-03-04 - 2009-03-06 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | YRP |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Workshop on Mobile Communications |
| Paper Information | |
| Registration To | SR |
| Conference Code | 2009-03-RCS-AN-MoMuC-SR |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Experimental Study on Efficiency of EER Transmitter Using Envelope PWM |
| Sub Title (in English) | |
| Keyword(1) | power added effeciency |
| Keyword(2) | power amplifier |
| Keyword(3) | pulse width moduration |
| Keyword(4) | EER |
| Keyword(5) | |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Satoshi Tsukamoto |
| 1st Author's Affiliation | Advanced Telecommunications Research Institute International (ATR) |
| 2nd Author's Name | Takayuki Umaba |
| 2nd Author's Affiliation | Advanced Telecommunications Research Institute International (ATR) |
| 3rd Author's Name | Keizo Inagaki |
| 3rd Author's Affiliation | Advanced Telecommunications Research Institute International (ATR) |
| 4th Author's Name | Makoto Taromaru |
| 4th Author's Affiliation | Advanced Telecommunications Research Institute International (ATR) |
| 5th Author's Name | |
| 5th Author's Affiliation | () |
| 6th Author's Name | |
| 6th Author's Affiliation | () |
| 7th Author's Name | |
| 7th Author's Affiliation | () |
| 8th Author's Name | |
| 8th Author's Affiliation | () |
| 9th Author's Name | |
| 9th Author's Affiliation | () |
| 10th Author's Name | |
| 10th Author's Affiliation | () |
| 11th Author's Name | |
| 11th Author's Affiliation | () |
| 12th Author's Name | |
| 12th Author's Affiliation | () |
| 13th Author's Name | |
| 13th Author's Affiliation | () |
| 14th Author's Name | |
| 14th Author's Affiliation | () |
| 15th Author's Name | |
| 15th Author's Affiliation | () |
| 16th Author's Name | |
| 16th Author's Affiliation | () |
| 17th Author's Name | |
| 17th Author's Affiliation | () |
| 18th Author's Name | |
| 18th Author's Affiliation | () |
| Speaker | Author-1 |
| Date Time | 2009-03-04 13:00:00 |
| Presentation Time | 20 minutes |
| Registration for | SR |
| Paper # | SR2008-88 |
| Volume (vol) | vol.108 |
| Number (no) | no.446 |
| Page | pp.1-6 |
| #Pages | 6 |
| Date of Issue | 2009-02-25 (SR) |
[Return to Top Page]