Paper Abstract and Keywords |
Presentation |
2021-11-18 11:45
Distortion Analysis of RF Power Amplifier Using Probability Density of Input Signal and AM-AM Characteristics Satoshi Tanaka (Murata Manufacturing) CAS2021-43 MSS2021-23 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
When confirming the ACLR (adjacent channel leakage power ratio), which are representative indicators of distortion in the design of PA (power amplifier), it is well known how to calculate the AM-AM/PM characteristics of PA, input time series data of modulated signals, and analyze the output by Fourier analysis. In 5G (5th generation) mobile phones, not only QPSK (quadrature phase shift keying) modulation but also 16QAM (quadrature modulation), 64QAM, and 256QAM are becoming more multivalued as modulation signals. In addition, the modulation band may exceed 100 MHz, and the amount of time series data increases, and the increase in calculation time becomes a problem. In order to shorten the calculation time, it is considered that calculating the total amount of distortion generated by PA from the probability density of the modulation signal and the AM (amplitude modulation)-AM/PM (phase modulation) characteristics of PA. In this paper, we first focus on the AM-AM characteristics of PA, and compare the Fourier analysis of the IMD3 (inter modulation distortion 3) when two-tone signals are input and those obtained from probability density. As a result, it was confirmed that the two agree well when the nonlinearity is somewhat small. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Mobile Phone / Power Amplifier / Non-Linear / AM-AM / Probability Density / IMD / / |
Reference Info. |
IEICE Tech. Rep., vol. 121, no. 249, CAS2021-43, pp. 34-39, Nov. 2021. |
Paper # |
CAS2021-43 |
Date of Issue |
2021-11-11 (CAS, MSS) |
ISSN |
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) |
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CAS2021-43 MSS2021-23 |
Conference Information |
Committee |
MSS CAS IPSJ-AL |
Conference Date |
2021-11-18 - 2021-11-19 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Online |
Topics (in Japanese) |
(See Japanese page) |
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Paper Information |
Registration To |
CAS |
Conference Code |
2021-11-MSS-CAS-AL |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Distortion Analysis of RF Power Amplifier Using Probability Density of Input Signal and AM-AM Characteristics |
Sub Title (in English) |
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Keyword(1) |
Mobile Phone |
Keyword(2) |
Power Amplifier |
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Non-Linear |
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AM-AM |
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Probability Density |
Keyword(6) |
IMD |
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1st Author's Name |
Satoshi Tanaka |
1st Author's Affiliation |
Murata Manufacturing Co. Ltd. (Murata Manufacturing) |
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Speaker |
Author-1 |
Date Time |
2021-11-18 11:45:00 |
Presentation Time |
25 minutes |
Registration for |
CAS |
Paper # |
CAS2021-43, MSS2021-23 |
Volume (vol) |
vol.121 |
Number (no) |
no.249(CAS), no.250(MSS) |
Page |
pp.34-39 |
#Pages |
6 |
Date of Issue |
2021-11-11 (CAS, MSS) |
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