https://scholars.lib.ntu.edu.tw/handle/123456789/632304
標題: | A Compact Symmetrical Single-Cell Bidirectional Absorption Common-Mode Filter | 作者: | Liu H.-W Cheng C.-H TZONG-LIN WU |
關鍵字: | Absorption common-mode filter (A-CMF); common-mode (CM) noise; common-mode filter (CMF); electromagnetic interference (EMI); patterned ground structure (PGS) | 公開日期: | 2022 | 卷: | 12 | 期: | 4 | 起(迄)頁: | 655-664 | 來源出版物: | IEEE Transactions on Components, Packaging and Manufacturing Technology | 摘要: | A novel circuit with two mirror symmetry planes is proposed to synthesize bidirectional absorption common-mode filters (A-CMFs). In contrast to the literature, this proposed circuit first realizes bidirectional A-CMFs in only one stage (also called a single cell) featuring a compact size. Based on the symmetry property, bidirectional common-mode (CM) noise absorption can be achieved in the proposed single-cell circuit. Analytical design formulas have been found; thus, all circuit parameters can be straightforwardly determined. To validate the proposed circuit, two configurations are developed for CM noise absorption in the 2.4-GHz industrial, scientific, and medical (ISM) band. One uses a meander differential pair with a slotline, and the other applies a straight differential pair with a meander asymmetrical coplanar strip (MACPS). To obtain a better differential-mode (DM) signal integrity and 43% size reduction, the latter one, MACPS-type A-CMF, is fabricated and measured. The measurement results show that |Scc21|, |Scc12|, |Scc11|, and |Scc22| are less than -10 dB from 2.37 to 2.76 GHz to have the bidirectional CM absorption efficiency of more than 80%, and the -3-dB bandwidth of DM insertion loss reaches 7.83 GHz. In the time domain, the measured eye diagram of the proposed A-CMF is identical to that of a reference board for data rates up to 20 Gb/s. Above all, having a cost advantage, a compact size of 0.0317 λ2g in a two-layer printed circuit board (PCB) is presented. © 2011-2012 IEEE. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85126312659&doi=10.1109%2fTCPMT.2022.3158333&partnerID=40&md5=061cd485a28c3a108d95777c02fa124c https://scholars.lib.ntu.edu.tw/handle/123456789/632304 |
ISSN: | 21563950 | DOI: | 10.1109/TCPMT.2022.3158333 | SDG/關鍵字: | Electromagnetic pulse; Electromagnetic wave interference; Equivalent circuits; Printed circuit boards; Signal interference; Timing circuits; Absorption common-mode filter; Common-mode filter; Common-mode filters; Common-mode noise; Electromagnetic interference; Electromagnetics; Ground structure; Impedance; Patterned ground structure; Patterned grounds; Universal serial bus; Mirrors |
顯示於: | 電機工程學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。