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Paper Abstract and Keywords
Presentation 2022-11-15 13:00
Improvement of Output Back-off Performance on Outphasing Operation by Using 50-Ω Design Power Amplifiers at Quasi-Millimeter-Wave Band
Nao Ashizawa, Kazuhiko Honjo, Ryo Ishikawa (UEC) MW2022-111 Link to ES Tech. Rep. Archives: MW2022-111
Abstract (in Japanese) (See Japanese page) 
(in English) In order to handle digital modulation signals used in beyond 5G systems, RF power amplifiers with a wide-dynamic-range characteristic are required. However, the circuit configuration of the wide-dynamic-range power amplifiers is complex. Therefore, circuit insertion loss degrades efficiency performance, especially at a quasi-millimeter-wave region.In this report, a quasi-millimeter-wave-band outphasing power amplifier with simple structure has been designed using two 50-Ω design power amplifiers. It is expected that incorporating a 50-Ω design power amplifier into an outphasing power amplifier can simplify the circuit and reduce losses.In this configuration, the matching circuit must be carefully designed to achieve high efficiency at both low and high input power levels.The details of the design concept and the measured results of the fabricated GaN HEMT outphasing amplifiers at 28-GHz band are reported.
Keyword (in Japanese) (See Japanese page) 
(in English) power amplifiers / quasi-millimeter wave / outphasing / wide dynamic range / load modulation / / /  
Reference Info. IEICE Tech. Rep., vol. 122, no. 250, MW2022-111, pp. 13-18, Nov. 2022.
Paper # MW2022-111 
Date of Issue 2022-11-08 (MW) 
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 MW2022-111 Link to ES Tech. Rep. Archives: MW2022-111

Conference Information
Committee MW  
Conference Date 2022-11-15 - 2022-11-16 
Place (in Japanese) (See Japanese page) 
Place (in English) Fukue-Bunka-Kaikan 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Microwave, etc. 
Paper Information
Registration To MW 
Conference Code 2022-11-MW 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Improvement of Output Back-off Performance on Outphasing Operation by Using 50-Ω Design Power Amplifiers at Quasi-Millimeter-Wave Band 
Sub Title (in English)  
Keyword(1) power amplifiers  
Keyword(2) quasi-millimeter wave  
Keyword(3) outphasing  
Keyword(4) wide dynamic range  
Keyword(5) load modulation  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Nao Ashizawa  
1st Author's Affiliation The University of Electro-Communications (UEC)
2nd Author's Name Kazuhiko Honjo  
2nd Author's Affiliation The University of Electro-Communications (UEC)
3rd Author's Name Ryo Ishikawa  
3rd Author's Affiliation The University of Electro-Communications (UEC)
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Speaker Author-1 
Date Time 2022-11-15 13:00:00 
Presentation Time 25 minutes 
Registration for MW 
Paper # MW2022-111 
Volume (vol) vol.122 
Number (no) no.250 
Page pp.13-18 
#Pages 6 
Date of Issue 2022-11-08 (MW) 

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