JPWO2011052374A1 - コモンモードフィルタ - Google Patents
コモンモードフィルタ Download PDFInfo
- Publication number
- JPWO2011052374A1 JPWO2011052374A1 JP2011538334A JP2011538334A JPWO2011052374A1 JP WO2011052374 A1 JPWO2011052374 A1 JP WO2011052374A1 JP 2011538334 A JP2011538334 A JP 2011538334A JP 2011538334 A JP2011538334 A JP 2011538334A JP WO2011052374 A1 JPWO2011052374 A1 JP WO2011052374A1
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- Prior art keywords
- common mode
- differential
- differential delay
- series
- mode filter
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- 239000003990 capacitor Substances 0.000 claims abstract description 57
- 230000006698 induction Effects 0.000 claims description 20
- 238000010521 absorption reaction Methods 0.000 description 12
- 230000005540 biological transmission Effects 0.000 description 12
- 238000010586 diagram Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 10
- 230000008878 coupling Effects 0.000 description 6
- 238000010168 coupling process Methods 0.000 description 6
- 238000005859 coupling reaction Methods 0.000 description 6
- 230000002238 attenuated effect Effects 0.000 description 3
- 230000005670 electromagnetic radiation Effects 0.000 description 3
- 230000001902 propagating effect Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910001120 nichrome Inorganic materials 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/42—Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns
- H03H7/425—Balance-balance networks
- H03H7/427—Common-mode filters
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/075—Ladder networks, e.g. electric wave filters
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/09—Filters comprising mutual inductance
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/17—Structural details of sub-circuits of frequency selective networks
- H03H7/1708—Comprising bridging elements, i.e. elements in a series path without own reference to ground and spanning branching nodes of another series path
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/17—Structural details of sub-circuits of frequency selective networks
- H03H7/1716—Comprising foot-point elements
- H03H7/1725—Element to ground being common to different shunt paths, i.e. Y-structure
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/17—Structural details of sub-circuits of frequency selective networks
- H03H7/1716—Comprising foot-point elements
- H03H7/1733—Element between different shunt or branch paths
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/17—Structural details of sub-circuits of frequency selective networks
- H03H7/1741—Comprising typical LC combinations, irrespective of presence and location of additional resistors
- H03H7/1766—Parallel LC in series path
Landscapes
- Filters And Equalizers (AREA)
Abstract
Description
図7には、入力されたコモンモードノイズの電力に対する通過、反射および吸収の電力分配比率を示す。図7から分かるとおり、図5に示す構成は、2.5GHz以上で60%〜70%の吸収を示し、図4に示すような特定の周波数での吸収ピークを持たないことが分かる。
1A、1B 差動入力端子(入力側)
2A、2B 差動出力端子(出力側)
5 梯子型差動4端子網
Co、Co/2、Co/4、Ca キャパシタ
DL 集中定数差動遅延線
dl1、dl2、dl3、dl4 差動遅延素子(差動4端子回路)
Lo、Lo/2 インダクタ
L1、L2、L3、L4 コモンモードノイズ減衰用インダクタ(ノイズ減衰用受動2端子回路)
R1、R2、R3、R4、R10、R12、R23、R34、R40 コモンモードノイズ減衰用抵抗(ノイズ減衰用受動2端子回路)
T1、T2、T3、T4 接続点
+vd、−vd 差動電源
Vc コモンモードノイズ源
Claims (10)
- 差動線路中に直列的に配置されたインダクタを含む受動直列素子および前記差動線路間に並列的に配置されたキャパシタを含む受動並列素子からなる梯子型の差動4端子回路を有してなる集中定数差動遅延線であって、前記キャパシタが、当該キャパシタと等価にして値の等しい2個の直列接続されたキャパシタからなる集中定数差動遅延線と、
直列接続された前記キャパシタどうしの接続点とグランド電位との間に接続され、コモンモードノイズ減衰用の抵抗、インダクタと抵抗の直列回路、又はインダクタと抵抗の並列回路からなるノイズ減衰用受動2端子回路と、
を具備することを特徴とするコモンモードフィルタ。 - 前記集中定数差動遅延線は、定K型構成である請求項1記載のコモンモードフィルタ。
- 前記集中定数差動遅延線は、誘導m型構成である請求項1記載のコモンモードフィルタ。
- 前記集中定数差動遅延線は、全域通過型構成である請求項1記載のコモンモードフィルタ。
- 前記集中定数差動遅延線および前記ノイズ減衰用受動2端子回路を1区間の差動遅延素子とし、前記差動線路に前記差動遅延素子が梯子型に複数直列配置され複数区間が構成された請求項1〜4いずれか1記載のコモンモードフィルタ。
- 上記差動遅延素子の間に前記集中定数差動遅延線が梯子状に直列配置されて構成された請求項5記載のコモンモードフィルタ。
- 前記複数区間の前記集中定数差動遅延線における前記キャパシタどうしの複数の接続点間に、抵抗が接続された請求項5又は6記載のコモンモードフィルタ。
- 一部の前記集中定数差動遅延線における前記キャパシタどうしの接続点とグランド電位との間に、コモンモード減衰用インダクタのみが接続された請求項5又は6記載のコモンモードフィルタ。
- 前記集中定数差動遅延線は、定K型、誘導m型および全域通過型の差動遅延素子中から異なる2個又は3個を複合した構成である請求項5〜8いずれか1記載のコモンモードフィルタ。
- 前記差動遅延素子における前記ノイズ減衰用受動2端子回路の定数を区間毎に異ならせてなる請求項5〜9いずれか1記載のコモンモードフィルタ。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011538334A JP5341201B2 (ja) | 2009-11-02 | 2010-10-13 | コモンモードフィルタ |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009252046 | 2009-11-02 | ||
JP2009252046 | 2009-11-02 | ||
PCT/JP2010/067918 WO2011052374A1 (ja) | 2009-11-02 | 2010-10-13 | コモンモードフィルタ |
JP2011538334A JP5341201B2 (ja) | 2009-11-02 | 2010-10-13 | コモンモードフィルタ |
Publications (2)
Publication Number | Publication Date |
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JPWO2011052374A1 true JPWO2011052374A1 (ja) | 2013-03-21 |
JP5341201B2 JP5341201B2 (ja) | 2013-11-13 |
Family
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JP2011538334A Active JP5341201B2 (ja) | 2009-11-02 | 2010-10-13 | コモンモードフィルタ |
Country Status (4)
Country | Link |
---|---|
US (1) | US8847705B2 (ja) |
JP (1) | JP5341201B2 (ja) |
CN (1) | CN102474235B (ja) |
WO (1) | WO2011052374A1 (ja) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5352881B2 (ja) * | 2009-09-25 | 2013-11-27 | 松江エルメック株式会社 | コモンモードフィルタ |
US9875841B2 (en) * | 2013-04-24 | 2018-01-23 | Applied Energy Llc | Systems and methods for a DC phaseback choke |
TWI530093B (zh) * | 2014-05-02 | 2016-04-11 | 國立臺灣大學 | 共模雜訊抑制電路 |
JP6392865B2 (ja) | 2014-05-27 | 2018-09-19 | エルメック株式会社 | コモンモードフィルタ |
US10018716B2 (en) * | 2014-06-26 | 2018-07-10 | Honeywell International Inc. | Systems and methods for calibration and optimization of frequency modulated continuous wave radar altimeters using adjustable self-interference cancellation |
JP6471619B2 (ja) * | 2015-06-12 | 2019-02-20 | 株式会社デンソー | 電子装置 |
KR101968585B1 (ko) * | 2016-02-05 | 2019-04-12 | 주식회사 아모텍 | 차동 및 공통 모드 겸용 필터 |
US10333410B2 (en) * | 2016-09-15 | 2019-06-25 | Futurewei Technologies, Inc. | Common-mode (CM) electromagnetic interference (EMI) reduction in resonant converters |
TWI692145B (zh) | 2016-11-04 | 2020-04-21 | 國立臺灣大學 | 共模訊號吸收器及其等效電路 |
US10499489B2 (en) | 2017-07-14 | 2019-12-03 | Hewlett Packard Enterprise Development Lp | Defected ground structure with void having resistive material along perimeter to improve EMI suppression |
CN112564663A (zh) * | 2020-10-16 | 2021-03-26 | 安波科技股份有限公司 | 共模噪声滤波器 |
TWI731806B (zh) | 2020-10-16 | 2021-06-21 | 安波科技股份有限公司 | 共模雜訊濾波器 |
WO2023153283A1 (ja) * | 2022-02-09 | 2023-08-17 | 株式会社村田製作所 | フィルタ装置、高周波モジュール、および通信装置 |
Family Cites Families (16)
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US1866525A (en) * | 1928-04-14 | 1932-07-12 | Rca Corp | Filter |
US1942488A (en) * | 1931-09-16 | 1934-01-09 | Bell Telephone Labor Inc | Electric wave filter |
US4126837A (en) * | 1974-07-01 | 1978-11-21 | Nippon Telegraph And Telephone Public Corporation | Impedance element and band-rejection filter using the same |
NL7810086A (nl) * | 1978-10-06 | 1980-04-09 | Philips Nv | Voedingsbrug voor een abonneestroomloop. |
US4383229A (en) * | 1981-07-20 | 1983-05-10 | Circuit Research Labs | Resonant filter clipper circuit |
JPS59159187U (ja) * | 1983-04-12 | 1984-10-25 | ティーディーケイ株式会社 | スイッチング電源装置 |
US4761623A (en) * | 1986-12-04 | 1988-08-02 | Corcom Inc. | Broadband RFI power line filter |
JPH059023U (ja) * | 1991-07-12 | 1993-02-05 | リヨービ株式会社 | 電動機の雑音防止回路 |
JPH06233521A (ja) * | 1993-01-29 | 1994-08-19 | Yokogawa Electric Corp | ノイズフィルタ回路 |
JP3576367B2 (ja) * | 1998-01-30 | 2004-10-13 | 沖電気工業株式会社 | 弾性表面波フィルタ |
JP3000998B1 (ja) | 1998-08-12 | 2000-01-17 | 株式会社村田製作所 | 差動伝送線路用コモンモードチョークコイル |
US6608536B2 (en) * | 2000-11-09 | 2003-08-19 | Broadcom Corporation | Constant impedance filter |
JP2004266634A (ja) | 2003-03-03 | 2004-09-24 | Tdk Corp | 電力線通信用モデム |
JP2009220549A (ja) | 2008-03-18 | 2009-10-01 | Yuzo Ogawa | ボールペンに現物よる広告、ならびにインク中軸を利用した広告 |
CN201215956Y (zh) * | 2008-07-14 | 2009-04-01 | 深圳新飞通光电子技术有限公司 | 一种数字光接收器的低通滤波电路 |
JP5352881B2 (ja) | 2009-09-25 | 2013-11-27 | 松江エルメック株式会社 | コモンモードフィルタ |
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2010
- 2010-10-13 CN CN201080026928.7A patent/CN102474235B/zh active Active
- 2010-10-13 US US13/376,094 patent/US8847705B2/en active Active
- 2010-10-13 WO PCT/JP2010/067918 patent/WO2011052374A1/ja active Application Filing
- 2010-10-13 JP JP2011538334A patent/JP5341201B2/ja active Active
Also Published As
Publication number | Publication date |
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WO2011052374A1 (ja) | 2011-05-05 |
CN102474235B (zh) | 2015-06-10 |
US8847705B2 (en) | 2014-09-30 |
JP5341201B2 (ja) | 2013-11-13 |
CN102474235A (zh) | 2012-05-23 |
US20120075036A1 (en) | 2012-03-29 |
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