| Paper Abstract and Keywords |
| Presentation |
2026-05-29 11:50
S-parameter and EVM evaluation on internal EMI shielding using various types of metals for a 6-GHz low-noise amplifier package Koyu Chinen (GLEX), Ichiko Kinjo (ONCT) EMCJ2026-12 |
| Abstract |
(in Japanese) |
(See Japanese page) |
| (in English) |
When a 6GHz LNA was packaged in an ADC mold and covered with a high-SER metal lid, a sharp S21peak at 5.2 GHz was observed. It was confirmed that the internal EM power multiple reflections rotate the total phase by 5π, which was incident on the LNA input stage, causing resonant oscillation at 5.2 GHz. When the Fe-powder-based EM wave shielding (EMWS) sheet was attached to the metal lid bottom, the shielding effect by absorption (SEA) was increased by about 10 dB, and the sharp peak on the S21curve disappeared. This phenomenon was also investigated during the EVM evaluation for 64QAM-OFDM. When the LNA was covered with an ADC lid, the EVM increased by approximately 10 dB due to increased quadrature error (Quad-Err). When the LNA was covered with an ADC/EMWS lid, the EVM and Quad-Err were substantially suppressed. |
| Keyword |
(in Japanese) |
(See Japanese page) |
| (in English) |
Internal EMI shielding / 6GHz-band LNA / Metal powder EM shielding / S-parameter / EVM / / / |
| Reference Info. |
IEICE Tech. Rep., vol. 126, no. 41, EMCJ2026-12, pp. 57-62, May 2026. |
| Paper # |
EMCJ2026-12 |
| Date of Issue |
2026-05-21 (EMCJ) |
| 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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EMCJ2026-12 |
| Conference Information |
| Committee |
EMCJ IEE-SPC IEE-EMC |
| Conference Date |
2026-05-28 - 2026-05-29 |
| Place (in Japanese) |
(See Japanese page) |
| Place (in English) |
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| Topics (in Japanese) |
(See Japanese page) |
| Topics (in English) |
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| Paper Information |
| Registration To |
EMCJ |
| Conference Code |
2026-05-EMCJ |
| Language |
Japanese |
| Title (in Japanese) |
(See Japanese page) |
| Sub Title (in Japanese) |
(See Japanese page) |
| Title (in English) |
S-parameter and EVM evaluation on internal EMI shielding using various types of metals for a 6-GHz low-noise amplifier package |
| Sub Title (in English) |
|
| Keyword(1) |
Internal EMI shielding |
| Keyword(2) |
6GHz-band LNA |
| Keyword(3) |
Metal powder EM shielding |
| Keyword(4) |
S-parameter |
| Keyword(5) |
EVM |
| Keyword(6) |
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| Keyword(7) |
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| Keyword(8) |
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| 1st Author's Name |
Koyu Chinen |
| 1st Author's Affiliation |
GLEX (GLEX) |
| 2nd Author's Name |
Ichiko Kinjo |
| 2nd Author's Affiliation |
National Institute of Technology (ONCT) |
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| Speaker |
Author-1 |
| Date Time |
2026-05-29 11:50:00 |
| Presentation Time |
25 minutes |
| Registration for |
EMCJ |
| Paper # |
EMCJ2026-12 |
| Volume (vol) |
vol.126 |
| Number (no) |
no.41 |
| Page |
pp.57-62 |
| #Pages |
6 |
| Date of Issue |
2026-05-21 (EMCJ) |