WO2005101771B1 - Common mode detecting apparatus - Google Patents

Common mode detecting apparatus

Info

Publication number
WO2005101771B1
WO2005101771B1 PCT/JP2005/007668 JP2005007668W WO2005101771B1 WO 2005101771 B1 WO2005101771 B1 WO 2005101771B1 JP 2005007668 W JP2005007668 W JP 2005007668W WO 2005101771 B1 WO2005101771 B1 WO 2005101771B1
Authority
WO
WIPO (PCT)
Prior art keywords
amended
power lines
transmitting apparatus
conductors
pair
Prior art date
Application number
PCT/JP2005/007668
Other languages
French (fr)
Other versions
WO2005101771A3 (en
WO2005101771A2 (en
Filing date
Publication date
Priority claimed from JP2004121455A external-priority patent/JP2005311411A/en
Priority claimed from JP2004121456A external-priority patent/JP2005311412A/en
Application filed filed Critical
Priority to EP05734057A priority Critical patent/EP1741202A2/en
Publication of WO2005101771A2 publication Critical patent/WO2005101771A2/en
Publication of WO2005101771A3 publication Critical patent/WO2005101771A3/en
Publication of WO2005101771B1 publication Critical patent/WO2005101771B1/en

Links

Abstract

A line state detecting apparatus provided in a balanced transmission system includes, in transmission lines comprising a pair of conductors W1, W2 connected to a transmitting portion 13, current transformers T11, T12 primary sides of which are inserted to respectives thereof in series therewith and secondary sides of which are connected in series to cancel currents or voltages of the two transformer by each other, and a detecting portion 11 for detecting currents or voltages on secondary sides of the current transformers T11, T12. By an output of the detecting portion 11, a difference of currents or voltages of the conductors W1, W2 of the transmission lines is provided and an unbalance component between the conductors W1, W2 is detected.

Claims

AMENDED CLAIMS[received by the International Bureau on 06 January 2006 (06.01.06); original claims 1, 3-16, 22, 24-33 amended; original claims 2, 17-21, 23, 34-38 cancelled;
1. (amended) A transmitting apparatus which transmits a transmission signal by using a pair of power lines, the transmitting apparatus comprising: an unbalance component detector for directly detecting an unbalance component between the pair of power lines; a line state calculator for calculating a state detecting signal indicating a line state of the pair of power lines based on the unbalance component detected by the unbalance component detector; a transmitter for transmitting the transmission signal to the pair of power lines; and a transmission signal controller for controlling the transmission signal by transmitted by the transmitter based on the state detecting signal calculated by the line state calculator.
2. (Cancelled)
3. (amended) The transmitting apparatus according to Claim 1, wherein the unbalance component detector comprises: current transformers primary windings of which are inserted to respectives of the pair of power lines in series therewith and secondary windings of which are connected in series and a detector for detecting currents or voltages of the secondary windings connected in series, wherein the secondary windings of the current transformers are connected to cancel the currents or the voltages of the two transformers by each other.
4. (amended) The transmitting apparatus according to Claim 1, wherein the unbalance component detector comprises: a common mode coil a first and a second winding of which are inserted to respectives of the pair of power lines in series therewith and including a third winding for detecting a common mode and a detector for detecting a voltage or a current induced in the third winding.
5. (amended) A power source connecting apparatus used for a transmitting
49 apparatus for detecting a state of a transmission line in a balanced transmission system for transmitting a data by using a pair of power lines and comprising an unbalance component detector for directly detecting an unbalance component between the pair of power lines, said power source connecting apparatus comprising: a common mode coil a first and a second winding of which, are inserted to respectives of the pair of power lines in series therewith and including a third winding for detecting a common mode as the unbalance component detector.
50
6. (amended) The transmitting apparatus according to Claim 2, wherein the unbalance component detector comprises an impedance provided between the pair of power lines and a detector for detecting a current or a voltage between a middle point of the impedance and the ground.
7. (amended) The transmitting apparatus according to Claim 6, further comprising: a detection transformer a primary winding of which is inserted between the middle point of the impedance and the ground; wherein the detector detects a current or a voltage of a second winding of the detection transformer.
8. (amended) The transmitting apparatus according to Claim 6, wherein the impedance serves also as a terminator of the pair of power lines.
9. (amended) The transmitting apparatus according to Claim 1, wherein the pair of power lines are connected to a transmitting apparatus or a receiving apparatus by way of a transmission transformer; and wherein the unbalance component detector comprises an impedance connected to a middle point of a winding on a side of the pair of power lines of the transmission transformer and a voltage detector for detecting a voltage between the impedance and the ground.
10. (amended) The transmitting apparatus according to Claim 1, wherein the pair of power lines are connected to a transmitting apparatus or a receiving apparatus by way of a transmission transformer; and wherein the unbalance component detector comprises a detector for detecting a current or a voltage between a middle point of a winding on a side of the pair of power lines of the transmission transformer and the ground.
51
11. (amended) The transmitting apparatus according to Claim 9, further comprising: a detection transformer a primary winding of which is inserted between the middle point of the winding on the side of the pair of power lines of the transmission transformer and the ground; wherein the detector detects a current or a voltage of the secondary winding of the detection transformer.
12. (amended) The transmitting apparatus according to Claim 10, further comprising: a detection transformer a primary winding of which is inserted between the middle point of the winding on the side of the pair of power lines of the transmission transformer and the ground; wherein the detector detects a current or a voltage of the secondary winding of the detection transformer.
13. (amended) The transmitting apparatus according to Claim 1, wherein the unbalance component detector detects an amplitude and a direction of the unbalance component between the pair of power lines.
14. (amended) The transmitting apparatus according to Claim 13, wherein the unbalance component detector compares phases of a transmission signal outputted to the conductors and a difference of a current or a voltage in a forward line and a rearward line of the conductors.
15. (amended) The transmitting apparatus according to Claim 13, wherein the unbalance component detector calculates a product of the transmission signal outputted to the conductor by the difference of the current or the voltage in the forward line and the rearward line of the conductors.
52
16. (amended) The transmitting apparatus according to Claim 13, further comprising- a phase shifter for controlling a phase of at least one of a transmission signal outputted to the conductors and a difference of a current or a voltage of in a forward line and a rearward line of the conductors.
17. (Cancelled)
18. (Cancelled)
19. (Cancelled)
20. (Cancelled)
21. (Cancelled)
22. (amended) A transmitting apparatus which transmits a transmission signal by using a pair of power lines, the transmitting apparatus comprising: an electrical component detector for detecting currents flowing in the power lines or voltages of the power lines or the both thereof for the respective power lines; an unbalance component calculator for calculating a difference of the currents of the respective power lines or a difference of the voltages of the respective power lines or both thereof detected by the electrical component detector; a transmitter for transmitting the transmission signal to the pair of power lines; and a transmission signal controller for controlling the transmission signal by transmitted by the transmitter based on the difference of the currents or the difference of the voltages or both thereof calculated by the unbalance component calculator.
23. (Cancelled)
24. (amended) The transmitting apparatus according to Claim 22, wherein the electrical component detector includes a current detector for detecting the currents flowing in the conductors for the respective conductors.
54
25. (amended) The transmitting apparatus according to Claim 24, wherein the current detector includes impedances inserted to respectives of the pair of power lines in series therewith and a voltage detector for detecting voltages across both ends of the impedances.
26. (amended) The line detecting apparatus according to Claim 24, wherein the current detector includes current transformers primary windings of which are inserted to respectives of the pair of power lines in series therewith and a current detector for detecting currents or voltages of secondary windings of the current transformers.
27. (amended) The transmitting apparatus according to Claim 22, wherein the electrical component detector includes a voltage detector for detecting voltages of the conductors relative to a predetermined reference potential for the respective conductors.
28. (amended) The transmitting apparatus according to Claim 22, wherein the unbalance component calculator calculates at least one of a difference of currents of a forward line and a rearward line of the respective conductors and a common mode amount of voltages of the respective conductors as the difference.
29. (amended) The transmitting apparatus according to Claim 22, wherein the unbalance component calculator calculates an amplitude and a direction of an unbalance component between the pair of power lines based on the difference.
30. (amended) The transmitting apparatus according to Claim 29, wherein the unbalance component calculator compares phases of a transmission signal outputted to the conductors or the currents or the voltages of the conductors and the difference of the currents of the forward line and the rearward line of the conductors or the amount of the common mode voltage.
31. (amended) The transmitting apparatus according to Claim 29, wherein the unbalance component calculator calculates a product of the transmission signal outputted to the conductors or the currents or the voltages of the conductors by the difference of the currents of the forward line and the rearward line of the conductor or
55 the amount of the common mode voltage.
56
32. (amended) The transmitting apparatus according to 30, further comprising: a phase shifter for controlling at least one of the phases of the transmission signal outputted to the conductors or the currents or the voltages of the conductors and the difference of the currents of the forward line and the rearward line of the conductors or the amount of the common mode voltage.
33. (amended) The transmitting apparatus according to 31, further comprising: a phase shifter for controlling at least one of the phases of the transmission signal outputted to the conductors or the currents or the voltages of the conductors and the difference of the currents of the forward line and the rearward line of the conductors or the amount of the common mode voltage.
34. (Cancelled)
35. (Cancelled)
36. (Cancelled)
57
AMENDED SHEET (AF; HCLE !9)
37. (Cancelled)
38. (Cancelled)
58
PCT/JP2005/007668 2004-04-16 2005-04-15 Common mode detecting apparatus WO2005101771A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP05734057A EP1741202A2 (en) 2004-04-16 2005-04-15 Common mode detecting apparatus

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2004-121455 2004-04-16
JP2004-121456 2004-04-16
JP2004121455A JP2005311411A (en) 2004-04-16 2004-04-16 Line state detecting apparatus, and transmitter and receiver in balanced transmission system
JP2004121456A JP2005311412A (en) 2004-04-16 2004-04-16 Line state detecting apparatus, and transmitter and receiver in balanced transmission system

Publications (3)

Publication Number Publication Date
WO2005101771A2 WO2005101771A2 (en) 2005-10-27
WO2005101771A3 WO2005101771A3 (en) 2006-01-12
WO2005101771B1 true WO2005101771B1 (en) 2006-03-02

Family

ID=34965364

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2005/007668 WO2005101771A2 (en) 2004-04-16 2005-04-15 Common mode detecting apparatus

Country Status (3)

Country Link
US (1) US8139759B2 (en)
EP (1) EP1741202A2 (en)
WO (1) WO2005101771A2 (en)

Families Citing this family (107)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5386055B2 (en) * 2005-08-30 2014-01-15 株式会社日立製作所 Characteristic evaluation apparatus and characteristic evaluation method
US7519328B2 (en) * 2006-01-19 2009-04-14 Murata Manufacturing Co., Ltd. Wireless IC device and component for wireless IC device
CN101416353B (en) 2006-04-10 2013-04-10 株式会社村田制作所 Wireless IC device
WO2007119304A1 (en) 2006-04-14 2007-10-25 Murata Manufacturing Co., Ltd. Wireless ic device
JP4135770B2 (en) * 2006-04-14 2008-08-20 株式会社村田製作所 antenna
US9064198B2 (en) 2006-04-26 2015-06-23 Murata Manufacturing Co., Ltd. Electromagnetic-coupling-module-attached article
WO2007125752A1 (en) * 2006-04-26 2007-11-08 Murata Manufacturing Co., Ltd. Article provided with feed circuit board
JP4325744B2 (en) * 2006-05-26 2009-09-02 株式会社村田製作所 Data combiner
JPWO2007138836A1 (en) * 2006-05-30 2009-10-01 株式会社村田製作所 Information terminal equipment
ATE507538T1 (en) 2006-06-01 2011-05-15 Murata Manufacturing Co HIGH FREQUENCY IC ARRANGEMENT AND COMPOSITE COMPONENT FOR A HIGH FREQUENCY IC ARRANGEMENT
WO2007145053A1 (en) * 2006-06-12 2007-12-21 Murata Manufacturing Co., Ltd. Electromagnetically coupled module, wireless ic device inspecting system, electromagnetically coupled module using the wireless ic device inspecting system, and wireless ic device manufacturing method
CN101467209B (en) 2006-06-30 2012-03-21 株式会社村田制作所 Optical disc
JP4957724B2 (en) * 2006-07-11 2012-06-20 株式会社村田製作所 Antenna and wireless IC device
WO2008023636A1 (en) 2006-08-24 2008-02-28 Murata Manufacturing Co., Ltd. Wireless ic device inspecting system and wireless ic device manufacturing method using the same
WO2008050535A1 (en) 2006-09-26 2008-05-02 Murata Manufacturing Co., Ltd. Electromagnetically coupled module and article with electromagnetically coupled module
CN101523750B (en) * 2006-10-27 2016-08-31 株式会社村田制作所 The article of charged magnetic coupling module
CN101542995B (en) 2006-11-23 2015-04-22 Nxp股份有限公司 RDID communication system and method for exchanging data
CN101542927B (en) * 2006-11-24 2013-05-22 Nxp股份有限公司 Signal transmission system
WO2008090943A1 (en) 2007-01-26 2008-07-31 Murata Manufacturing Co., Ltd. Container with electromagnetically coupling module
WO2008096576A1 (en) 2007-02-06 2008-08-14 Murata Manufacturing Co., Ltd. Packing material provided with electromagnetically coupled module
US8009101B2 (en) 2007-04-06 2011-08-30 Murata Manufacturing Co., Ltd. Wireless IC device
ATE555453T1 (en) 2007-04-06 2012-05-15 Murata Manufacturing Co RADIO IC DEVICE
JP4697332B2 (en) * 2007-04-09 2011-06-08 株式会社村田製作所 Wireless IC device
US7762472B2 (en) 2007-07-04 2010-07-27 Murata Manufacturing Co., Ltd Wireless IC device
US8235299B2 (en) 2007-07-04 2012-08-07 Murata Manufacturing Co., Ltd. Wireless IC device and component for wireless IC device
WO2008136226A1 (en) * 2007-04-26 2008-11-13 Murata Manufacturing Co., Ltd. Wireless ic device
JP4666101B2 (en) 2007-04-27 2011-04-06 株式会社村田製作所 Wireless IC device
WO2008136257A1 (en) 2007-04-27 2008-11-13 Murata Manufacturing Co., Ltd. Wireless ic device
CN101568934A (en) 2007-05-10 2009-10-28 株式会社村田制作所 Wireless IC device
JP4666102B2 (en) 2007-05-11 2011-04-06 株式会社村田製作所 Wireless IC device
ATE545174T1 (en) * 2007-06-27 2012-02-15 Murata Manufacturing Co WIRELESS IC DEVICE
CN101542831B (en) * 2007-07-09 2014-06-25 株式会社村田制作所 Wireless ic device
CN104540317B (en) 2007-07-17 2018-11-02 株式会社村田制作所 printed wiring substrate
US7830311B2 (en) 2007-07-18 2010-11-09 Murata Manufacturing Co., Ltd. Wireless IC device and electronic device
CN101682113B (en) * 2007-07-18 2013-02-13 株式会社村田制作所 Wireless ic device
US20090021352A1 (en) * 2007-07-18 2009-01-22 Murata Manufacturing Co., Ltd. Radio frequency ic device and electronic apparatus
JP4434311B2 (en) 2007-07-18 2010-03-17 株式会社村田製作所 Wireless IC device and manufacturing method thereof
JPWO2009031404A1 (en) * 2007-09-04 2010-12-09 株式会社アドバンテスト Transmission circuit, transmitter, receiver, and test apparatus
EP2408064B1 (en) 2007-12-20 2020-08-05 Murata Manufacturing Co., Ltd. Wireless IC device
EP2717196B1 (en) 2007-12-26 2020-05-13 Murata Manufacturing Co., Ltd. Antenna device and wireless IC device
WO2009110381A1 (en) 2008-03-03 2009-09-11 株式会社村田製作所 Wireless ic device and wireless communication system
JP4518211B2 (en) * 2008-03-03 2010-08-04 株式会社村田製作所 Compound antenna
EP2256861B1 (en) * 2008-03-26 2018-12-05 Murata Manufacturing Co., Ltd. Radio ic device
WO2009128437A1 (en) * 2008-04-14 2009-10-22 株式会社村田製作所 Radio ic device, electronic device, and method for adjusting resonance frequency of radio ic device
CN103295056B (en) 2008-05-21 2016-12-28 株式会社村田制作所 Wireless IC device
WO2009142068A1 (en) * 2008-05-22 2009-11-26 株式会社村田製作所 Wireless ic device and method for manufacturing the same
JP5218558B2 (en) 2008-05-26 2013-06-26 株式会社村田製作所 Wireless IC device system and authentication method for wireless IC device
KR101148534B1 (en) * 2008-05-28 2012-05-21 가부시키가이샤 무라타 세이사쿠쇼 Wireless ic device and component for a wireless ic device
JP4557186B2 (en) 2008-06-25 2010-10-06 株式会社村田製作所 Wireless IC device and manufacturing method thereof
WO2010001987A1 (en) * 2008-07-04 2010-01-07 株式会社村田製作所 Wireless ic device
CN102124605A (en) * 2008-08-19 2011-07-13 株式会社村田制作所 Wireless IC device and method for manufacturing same
ES2378585T3 (en) * 2008-08-20 2012-04-16 Sony Corporation Device for determining a common mode signal in a power line communications network
JP5429182B2 (en) * 2008-10-24 2014-02-26 株式会社村田製作所 Wireless IC device
DE112009002399B4 (en) * 2008-10-29 2022-08-18 Murata Manufacturing Co., Ltd. Radio IC device
JP4605318B2 (en) 2008-11-17 2011-01-05 株式会社村田製作所 Antenna and wireless IC device
CN102273012B (en) 2009-01-09 2013-11-20 株式会社村田制作所 Wireless IC device, wireless IC module and wireless IC module manufacturing method
CN102204011B (en) * 2009-01-16 2013-12-25 株式会社村田制作所 High frequency device and wireless IC device
JP5267578B2 (en) 2009-01-30 2013-08-21 株式会社村田製作所 Antenna and wireless IC device
CA2751254A1 (en) 2009-02-05 2010-08-12 Enphase Energy, Inc. Method and apparatus for determining a corrected monitoring voltage
JP5510450B2 (en) 2009-04-14 2014-06-04 株式会社村田製作所 Wireless IC device
CN102405556B (en) 2009-04-21 2013-04-10 株式会社村田制作所 Antenna apparatus and resonant frequency setting method of same
WO2010140429A1 (en) 2009-06-03 2010-12-09 株式会社村田製作所 Wireless ic device and production method thereof
WO2010146944A1 (en) 2009-06-19 2010-12-23 株式会社村田製作所 Wireless ic device and method for coupling power supply circuit and radiating plates
WO2011001709A1 (en) 2009-07-03 2011-01-06 株式会社村田製作所 Antenna and antenna module
WO2011037234A1 (en) 2009-09-28 2011-03-31 株式会社村田製作所 Wireless ic device and method for detecting environmental conditions using same
WO2011040393A1 (en) 2009-09-30 2011-04-07 株式会社村田製作所 Circuit substrate and method of manufacture thereof
JP5304580B2 (en) * 2009-10-02 2013-10-02 株式会社村田製作所 Wireless IC device
JP5522177B2 (en) 2009-10-16 2014-06-18 株式会社村田製作所 Antenna and wireless IC device
CN102598413A (en) 2009-10-27 2012-07-18 株式会社村田制作所 Transmitting/receiving apparatus and wireless tag reader
WO2011055702A1 (en) 2009-11-04 2011-05-12 株式会社村田製作所 Wireless ic tag, reader/writer, and information processing system
JP5327334B2 (en) 2009-11-04 2013-10-30 株式会社村田製作所 Communication terminal and information processing system
CN108063314A (en) 2009-11-04 2018-05-22 株式会社村田制作所 Communication terminal and information processing system
CN102576929B (en) 2009-11-20 2015-01-28 株式会社村田制作所 Antenna device and mobile communication terminal
WO2011077877A1 (en) 2009-12-24 2011-06-30 株式会社村田製作所 Antenna and handheld terminal
CN102782937B (en) 2010-03-03 2016-02-17 株式会社村田制作所 Wireless communication devices and wireless communication terminal
WO2011108340A1 (en) 2010-03-03 2011-09-09 株式会社村田製作所 Wireless communication module and wireless communication device
JP5477459B2 (en) 2010-03-12 2014-04-23 株式会社村田製作所 Wireless communication device and metal article
WO2011118379A1 (en) 2010-03-24 2011-09-29 株式会社村田製作所 Rfid system
JP5630499B2 (en) 2010-03-31 2014-11-26 株式会社村田製作所 Antenna apparatus and wireless communication device
JP5299351B2 (en) 2010-05-14 2013-09-25 株式会社村田製作所 Wireless IC device
JP5170156B2 (en) 2010-05-14 2013-03-27 株式会社村田製作所 Wireless IC device
JP5376060B2 (en) 2010-07-08 2013-12-25 株式会社村田製作所 Antenna and RFID device
WO2012014939A1 (en) 2010-07-28 2012-02-02 株式会社村田製作所 Antenna device and communications terminal device
WO2012020748A1 (en) 2010-08-10 2012-02-16 株式会社村田製作所 Printed wire board and wireless communication system
JP5234071B2 (en) 2010-09-03 2013-07-10 株式会社村田製作所 RFIC module
JP5630506B2 (en) 2010-09-30 2014-11-26 株式会社村田製作所 Wireless IC device
CN105226382B (en) 2010-10-12 2019-06-11 株式会社村田制作所 Antenna assembly and terminal installation
CN102971909B (en) 2010-10-21 2014-10-15 株式会社村田制作所 Communication terminal device
DE102010050719B4 (en) * 2010-11-08 2013-08-22 Fujitsu Technology Solutions Intellectual Property Gmbh Method for adjusting the signal transmission between two electronic devices and arrangement with a computer system and a peripheral device
JP5716394B2 (en) * 2010-12-28 2015-05-13 株式会社リコー High voltage inverter device and leakage detecting device thereof
CN103119785B (en) 2011-01-05 2016-08-03 株式会社村田制作所 Wireless communication devices
CN103299325B (en) 2011-01-14 2016-03-02 株式会社村田制作所 RFID chip package and RFID label tag
CN103119786B (en) 2011-02-28 2015-07-22 株式会社村田制作所 Wireless communication device
JP5630566B2 (en) 2011-03-08 2014-11-26 株式会社村田製作所 Antenna device and communication terminal device
KR101317226B1 (en) 2011-04-05 2013-10-15 가부시키가이샤 무라타 세이사쿠쇼 Wireless communication device
JP5482964B2 (en) 2011-04-13 2014-05-07 株式会社村田製作所 Wireless IC device and wireless communication terminal
JP5569648B2 (en) 2011-05-16 2014-08-13 株式会社村田製作所 Wireless IC device
JP5488767B2 (en) 2011-07-14 2014-05-14 株式会社村田製作所 Wireless communication device
JP5333707B2 (en) 2011-07-15 2013-11-06 株式会社村田製作所 Wireless communication device
CN203850432U (en) 2011-07-19 2014-09-24 株式会社村田制作所 Antenna apparatus and communication terminal apparatus
CN203553354U (en) 2011-09-09 2014-04-16 株式会社村田制作所 Antenna device and wireless device
JP5344108B1 (en) 2011-12-01 2013-11-20 株式会社村田製作所 Wireless IC device and manufacturing method thereof
EP2688145A1 (en) 2012-01-30 2014-01-22 Murata Manufacturing Co., Ltd. Wireless ic device
WO2013125610A1 (en) 2012-02-24 2013-08-29 株式会社村田製作所 Antenna device and wireless communication device
CN104487985B (en) 2012-04-13 2020-06-26 株式会社村田制作所 Method and device for inspecting RFID tag
EP2696512A1 (en) * 2012-08-09 2014-02-12 Sigma Designs Israel S.D.I Ltd. System for coupling a power line communication device to a power line network
US10514434B2 (en) * 2017-02-06 2019-12-24 Keithley Instruments, Llc Calibration for common mode current

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993002518A1 (en) 1991-07-15 1993-02-04 Afferent Technologies Incorporated Monitoring and control apparatus and method
JP2708008B2 (en) 1995-04-06 1998-02-04 日本電気株式会社 Common mode choke circuit
JPH10303674A (en) 1997-04-25 1998-11-13 Sony Corp Ac line filter
CA2237460A1 (en) 1997-05-15 1998-11-15 Tet Hin Yeap Adaptive multiple sub-band common-mode rfi suppression
US6052420A (en) * 1997-05-15 2000-04-18 Northern Telecom Limited Adaptive multiple sub-band common-mode RFI suppression
US6040778A (en) * 1998-04-20 2000-03-21 France/Scott Fetzer Company Neon power supply with midpoint ground detection and diagnostic functions
JP2000201044A (en) 1999-01-07 2000-07-18 Mitsubishi Electric Corp Common mode noise reducing device
US6459739B1 (en) * 1999-12-30 2002-10-01 Tioga Technologies Inc. Method and apparatus for RF common-mode noise rejection in a DSL receiver
JP2001333582A (en) 2000-05-19 2001-11-30 Fuji Electric Co Ltd Noise reduction device of power converter
EP1271773A4 (en) * 2000-10-31 2005-01-19 Tdk Corp Power line noise filter
JP2002204189A (en) 2000-10-31 2002-07-19 Tdk Corp Power line noise filter
KR100403541B1 (en) 2001-06-29 2003-10-30 설승기 Active Common Mode EMI Filter for Eliminating Conducted Electromagnetic Interference
JP2003087973A (en) 2001-09-12 2003-03-20 Toshiba Corp Active filter
JP2004080441A (en) 2002-08-19 2004-03-11 Goto Ikueikai Transmitter apparatus and receiver apparatus
CN1675834A (en) * 2002-08-19 2005-09-28 Tdk株式会社 Common mode signal suppressing circuit and normal mode signal suppressing circuit
JP2004080436A (en) 2002-08-19 2004-03-11 Tdk Corp Common-mode signal suppressing circuit
JP2004140565A (en) 2002-10-17 2004-05-13 Matsushita Electric Ind Co Ltd Balanced transmitter
JP2004328614A (en) 2003-04-28 2004-11-18 Alps Electric Co Ltd Method of correcting unbalanced signal
JP2004357421A (en) 2003-05-29 2004-12-16 Matsushita Electric Ind Co Ltd Noise suppresser
US7315592B2 (en) * 2003-09-08 2008-01-01 Aktino, Inc. Common mode noise cancellation

Similar Documents

Publication Publication Date Title
WO2005101771B1 (en) Common mode detecting apparatus
WO2005101771A3 (en) Common mode detecting apparatus
EP2157704B1 (en) Device for determining a common-mode signal in a power line communication network
EP0922231A1 (en) Method of measurement for locating line faults on hvdc lines
EP2560294A1 (en) Impedance stabilization device
US7859427B2 (en) Bidirectional, DC-isolated transmission channel
US7294996B2 (en) Characteristic evaluating system and characteristic evaluating method
US20140226753A1 (en) Method And System For Mitigating Transformer Saturation In A Communication Interface
GB2440765A (en) Track circuit with phase difference adjustment
US4130851A (en) Directional relays
JPS6046900B2 (en) Signal transmission method using power lines
JP2659672B2 (en) Transceiver
NO148132B (en) RADIO SYSTEM.
FI105300B (en) A switching arrangement for receiving information transmitted in a high power line
JP6628537B2 (en) Communication abnormality detection system and communication abnormality detection method
JP3146194B2 (en) Core line contrast device
KR100539462B1 (en) A power line communication apparatus
JP3668037B2 (en) Transmission line driving circuit and communication device provided with the circuit
JP2018078367A (en) Signal mixture device
JP2004242135A (en) Transmission method of distribution line carrier signal
JPS59229935A (en) Signal transmission system utilizing low voltage distribution line
JPH06244893A (en) Communication terminal equipment
JPS6247220A (en) Distribution line carrier system
JPH02262073A (en) Apparatus for detecting accident point of transmission line
JPS637034A (en) Distribution line carrier system