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Paper Abstract and Keywords
Presentation 2025-12-19 10:00
1.75-43.75 GHz N-path Harmonic Mixer with Folded Noise Cancellation
Yuki Tsukui, Yoshiaki Morino, Kazutomi Mori (Mitsubishi Electric), Tomoyuki Furuichi, Noriharu Sematsu (Tohoku Univ.), Akihito Hirai, Koji Yamanaka (Mitsubishi Electric) MW2025-170
Abstract (in Japanese) (See Japanese page) 
(in English) We propose a wideband harmonic N‑path mixer with a switchable number of paths to enable folded noise cancellation. A prototype of the N-path harmonic mixer, which can switch the number of paths from 1 to 4, is fabricated using a 45nm SOI-CMOS process. In the case of 1 path, wideband operation is achieved by varying the harmonic order of the mixing LO signal according to the RF frequency. Additionally, when the number of paths is increased to N, folded noise from harmonics other than multiples of N can be canceled, improving the noise figure (NF). As a result of the prototype, for the case of 1 path, we confirmed operation from 1.75 GHz to 43.75 GHz with the world's best relative bandwidth by using the 1st to 12th harmonics of the LO signal for frequency conversion. By switching the number of paths from 1 to 4, we achieved a 5.1 dB reduction in NF, attaining an NF of 26.5 dB as a 12th harmonic mixer.
Keyword (in Japanese) (See Japanese page) 
(in English) CMOS / millimeter-wave / N-path / harmonic mixer / / / /  
Reference Info. IEICE Tech. Rep., vol. 125, no. 306, MW2025-170, pp. 7-12, Dec. 2025.
Paper # MW2025-170 
Date of Issue 2025-12-12 (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 MW2025-170

Conference Information
Committee MW  
Conference Date 2025-12-19 - 2025-12-19 
Place (in Japanese) (See Japanese page) 
Place (in English) Hidajibasan 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Measurement Techniques, Microwave, etc. 
Paper Information
Registration To MW 
Conference Code 2025-12-MW 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) 1.75-43.75 GHz N-path Harmonic Mixer with Folded Noise Cancellation 
Sub Title (in English)  
Keyword(1) CMOS  
Keyword(2) millimeter-wave  
Keyword(3) N-path  
Keyword(4) harmonic mixer  
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1st Author's Name Yuki Tsukui  
1st Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric)
2nd Author's Name Yoshiaki Morino  
2nd Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric)
3rd Author's Name Kazutomi Mori  
3rd Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric)
4th Author's Name Tomoyuki Furuichi  
4th Author's Affiliation Tohoku University (Tohoku Univ.)
5th Author's Name Noriharu Sematsu  
5th Author's Affiliation Tohoku University (Tohoku Univ.)
6th Author's Name Akihito Hirai  
6th Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric)
7th Author's Name Koji Yamanaka  
7th Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric)
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Speaker Author-1 
Date Time 2025-12-19 10:00:00 
Presentation Time 25 minutes 
Registration for MW 
Paper # MW2025-170 
Volume (vol) vol.125 
Number (no) no.306 
Page pp.7-12 
#Pages 6 
Date of Issue 2025-12-12 (MW) 

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