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Paper Abstract and Keywords
Presentation 2019-11-14 17:05
Multifunctional CRLH Transmission Line Stubs for Compact Class-E/Inverse-Class-E Power Amplifiers
Hirotaka Asami, Shinichi Tanaka (Shibaura Inst. of Tech.) MW2019-109
Abstract (in Japanese) (See Japanese page) 
(in English) This report presents CRLH transmission line (TL) stubs for realizing compact high-efficiency class-E / inverse class-E power amplifiers (PAs). The CRLH TL stubs have capabilities of harmonics tuning, DC biasing and FET parasitic-capacitance compensation. The frequency response of the CRLH TL stubs can be controlled arbitrarily by modifying the dispersion diagram of the stub line. The feature leads to significant miniaturization of the length of the stub line as well as the main RF signal line comprising the harmonic tuning circuit (HTC) for class-E amplifier. As for the HTC for inverse class-E amplifier, it is shown that the inductor of the CRLH TL stub can be used to compensate the FET parasitic capacitance. The fabricated 2-GHz Class-E GaN HEMT PA demonstrated power performance of 38.9 dBm output power, 78.3% drain efficiency, 73.0% power-added efficiency.
Keyword (in Japanese) (See Japanese page) 
(in English) power amplifier / GaN / Class-E / Inverse class-E / CRLH / power-added efficiency / /  
Reference Info. IEICE Tech. Rep., vol. 119, no. 292, MW2019-109, pp. 53-58, Nov. 2019.
Paper # MW2019-109 
Date of Issue 2019-11-07 (MW) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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. (No. 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF MW2019-109

Conference Information
Committee MW  
Conference Date 2019-11-14 - 2019-11-15 
Place (in Japanese) (See Japanese page) 
Place (in English) Minami Daido Villa. Tamokuteki Koryu Center 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Microwave Technologies 
Paper Information
Registration To MW 
Conference Code 2019-11-MW 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Multifunctional CRLH Transmission Line Stubs for Compact Class-E/Inverse-Class-E Power Amplifiers 
Sub Title (in English)  
Keyword(1) power amplifier  
Keyword(2) GaN  
Keyword(3) Class-E  
Keyword(4) Inverse class-E  
Keyword(5) CRLH  
Keyword(6) power-added efficiency  
1st Author's Name Hirotaka Asami  
1st Author's Affiliation Shibaura Institute of Technology (Shibaura Inst. of Tech.)
2nd Author's Name Shinichi Tanaka  
2nd Author's Affiliation Shibaura Institute of Technology (Shibaura Inst. of Tech.)
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Date Time 2019-11-14 17:05:00 
Presentation Time 25 
Registration for MW 
Paper # IEICE-MW2019-109 
Volume (vol) IEICE-119 
Number (no) no.292 
Page pp.53-58 
#Pages IEICE-6 
Date of Issue IEICE-MW-2019-11-07 

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