Paper Abstract and Keywords |
Presentation |
2022-01-27 13:15
An Inductor-Less Broadband Active Balun with Imbalance Correction and Active Peaking Keisuke Kawahara, Yohtaro Umeda, Kyoya Takano (TUS) ED2021-62 MW2021-104 Link to ES Tech. Rep. Archives: ED2021-62 MW2021-104 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
This paper presents an area-efficient broadband active balun with low gain error and phase error. An ideal balun has a differential output with the same amplitude and a phase difference of 180°. However, process variations and parasitic elements degrade the gain and phase errors at high frequencies. In a previous study, a method called MPCCT (Magnitude and Phase Concurrent Correction Technique) was proposed to reduce the errors by taking the difference of differential outputs using a feedback circuit. In this study, we analyzed the MPCCT in detail, and a capacitor we added improves the common-mode rejection ratio at high frequencies. Besides, we revealed that the feedback loops in the MPCCT are available for active peaking, and the additional capacitor also improves the high-frequency gain. In addition, we devised a bias circuit configuration using a current mirror for the input of the MPCCT to obtain a good current balance without tuning. An active balun using the proposed technique was fabricated using a 180 nm CMOS process and evaluated by S-parameter measurements. The developed balun demonstrates a bandwidth of 8.0 GHz, and the gain and phase errors within the bandwidth are less than 0.33 dB and 1.36°, respectively, including the process variation. The core area is 0.0058 square millimeters, which is smaller than previous studies. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Baluns / CMOS integrated circuits / Fiber-optic communications / MPCCT / Active peaking / / / |
Reference Info. |
IEICE Tech. Rep., vol. 121, no. 361, MW2021-104, pp. 1-6, Jan. 2022. |
Paper # |
MW2021-104 |
Date of Issue |
2022-01-20 (ED, 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 |
ED2021-62 MW2021-104 Link to ES Tech. Rep. Archives: ED2021-62 MW2021-104 |
Conference Information |
Committee |
ED MW |
Conference Date |
2022-01-27 - 2022-01-27 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Online |
Topics (in Japanese) |
(See Japanese page) |
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Paper Information |
Registration To |
MW |
Conference Code |
2022-01-ED-MW |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
An Inductor-Less Broadband Active Balun with Imbalance Correction and Active Peaking |
Sub Title (in English) |
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Keyword(1) |
Baluns |
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CMOS integrated circuits |
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Fiber-optic communications |
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MPCCT |
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Active peaking |
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1st Author's Name |
Keisuke Kawahara |
1st Author's Affiliation |
Tokyo University of Science (TUS) |
2nd Author's Name |
Yohtaro Umeda |
2nd Author's Affiliation |
Tokyo University of Science (TUS) |
3rd Author's Name |
Kyoya Takano |
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Tokyo University of Science (TUS) |
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Speaker |
Author-1 |
Date Time |
2022-01-27 13:15:00 |
Presentation Time |
25 minutes |
Registration for |
MW |
Paper # |
ED2021-62, MW2021-104 |
Volume (vol) |
vol.121 |
Number (no) |
no.360(ED), no.361(MW) |
Page |
pp.1-6 |
#Pages |
6 |
Date of Issue |
2022-01-20 (ED, MW) |
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