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Paper Abstract and Keywords
Presentation 2026-03-06 13:55
A Study of Optimizing Attachment Patterns for End Launch Connecters
Makoto Yoshida (CDEX), Yuki kawahara (KMCO), Junichi Hayasaka (DENJIKEN) MW2025-217
Abstract (in Japanese) (See Japanese page) 
(in English) Radio frequency (RF) passive devices such as filters, 90° hybrids, and directional couplers can be manufactured at low cost using printed circuit board (PCB) or semiconductor fabrication technologies. For the evaluation of these RF devices, it is general practice to measure S-parameters using a vector network analyzer, the measurements use probes or coaxial connectors considering calibration kits and other factors. Currently, coaxial end launch connectors without soldering have been put into practical use and used in RF frequency research and development. The manufacturers provide recommended attachment patterns for end launch connectors, these are limited to specific PCB materials, PCB thicknesses, and transmission lines. In this study, the end launch connectors were evaluated in some attachment patterns, and we studied optimizing parameters for attachment patterns by experiments.
Keyword (in Japanese) (See Japanese page) 
(in English) End launch / Coaxial / Attachment pattern / GCPW / MSL / S-Parameter / /  
Reference Info. IEICE Tech. Rep., vol. 125, no. 394, MW2025-217, pp. 112-117, March 2026.
Paper # MW2025-217 
Date of Issue 2026-02-26 (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 MW2025-217

Conference Information
Committee MW  
Conference Date 2026-03-05 - 2026-03-06 
Place (in Japanese) (See Japanese page) 
Place (in English) Setoda city hall 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Microwave, etc. 
Paper Information
Registration To MW 
Conference Code 2026-03-MW 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Study of Optimizing Attachment Patterns for End Launch Connecters 
Sub Title (in English)  
Keyword(1) End launch  
Keyword(2) Coaxial  
Keyword(3) Attachment pattern  
Keyword(4) GCPW  
Keyword(5) MSL  
Keyword(6) S-Parameter  
Keyword(7)  
Keyword(8)  
1st Author's Name Makoto Yoshida  
1st Author's Affiliation CDEX Co. Ltd. (CDEX)
2nd Author's Name Yuki kawahara  
2nd Author's Affiliation Kawashima Manufacturing, Co., Ltd. (KMCO)
3rd Author's Name Junichi Hayasaka  
3rd Author's Affiliation DENJIKEN-Research Institute for Electromagnetic Materials (DENJIKEN)
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Speaker Author-1 
Date Time 2026-03-06 13:55:00 
Presentation Time 25 minutes 
Registration for MW 
Paper # MW2025-217 
Volume (vol) vol.125 
Number (no) no.394 
Page pp.112-117 
#Pages 6 
Date of Issue 2026-02-26 (MW) 

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