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Paper Abstract and Keywords
Presentation 2024-10-18 14:00
Study on phase distortion in high-frequency circuits
Satoshi Tanaka, Takeshi Yoshida, Minoru Fujishima (Hiroshima Univ.) CAS2024-55 NLP2024-85
Abstract (in Japanese) (See Japanese page) 
(in English) The output signals of radio frequency (RF) amplifiers and other devices used in wireless systems vary in amplitude and phase depending on the amplitude of the input and output signals due to the distortion characteristics of the circuit. Quadrature modulation consisting of I (in phase) and Q (quadrature phase) signals is often used in wireless systems. The nonlinear characteristics of the RF amplifier distort the quadrature modulation signal, resulting in degradation of the error vector magnitude (EVM) and the adjacent channel leakage power ratio (ACLR). AM-AM (amplitude-amplitude) and AM-PM (amplitude-phase) of the circuit are obtained by circuit simulation. In this report, we present a method to calculate signal distortion using the probability density function of the amplitude of the input signal as a simple way to check distortion characteristics without using such system simulation. In particular, the case of amplitude-phase distortion in the circuit is discussed.
Keyword (in Japanese) (See Japanese page) 
(in English) Probability density function / IQ modulation signal / IMD / RF / Phase distortion / / /  
Reference Info. IEICE Tech. Rep., vol. 124, no. 207, CAS2024-55, pp. 140-145, Oct. 2024.
Paper # CAS2024-55 
Date of Issue 2024-10-10 (CAS, NLP) 
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)
Download PDF CAS2024-55 NLP2024-85

Conference Information
Committee NLP CAS  
Conference Date 2024-10-17 - 2024-10-18 
Place (in Japanese) (See Japanese page) 
Place (in English) Information Center, Tottori University 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Nonlinear Problems, Circuits and Systems, etc. 
Paper Information
Registration To CAS 
Conference Code 2024-10-NLP-CAS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Study on phase distortion in high-frequency circuits 
Sub Title (in English)  
Keyword(1) Probability density function  
Keyword(2) IQ modulation signal  
Keyword(3) IMD  
Keyword(4) RF  
Keyword(5) Phase distortion  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Satoshi Tanaka  
1st Author's Affiliation Hiroshima University (Hiroshima Univ.)
2nd Author's Name Takeshi Yoshida  
2nd Author's Affiliation Hiroshima University (Hiroshima Univ.)
3rd Author's Name Minoru Fujishima  
3rd Author's Affiliation Hiroshima University (Hiroshima Univ.)
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Speaker Author-1 
Date Time 2024-10-18 14:00:00 
Presentation Time 20 minutes 
Registration for CAS 
Paper # CAS2024-55, NLP2024-85 
Volume (vol) vol.124 
Number (no) no.207(CAS), no.208(NLP) 
Page pp.140-145 
#Pages 6 
Date of Issue 2024-10-10 (CAS, NLP) 

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