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GB2198605B - Filtering electrical signals - Google Patents

Filtering electrical signals

Info

Publication number
GB2198605B
GB2198605B GB8723750A GB8723750A GB2198605B GB 2198605 B GB2198605 B GB 2198605B GB 8723750 A GB8723750 A GB 8723750A GB 8723750 A GB8723750 A GB 8723750A GB 2198605 B GB2198605 B GB 2198605B
Authority
GB
United Kingdom
Prior art keywords
electrical signals
filtering electrical
filtering
signals
electrical
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
GB8723750A
Other versions
GB8723750D0 (en
GB2198605A (en
Inventor
Edward Christopher Th Crampton
Barry Stanley Ford
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EMLUX Ltd
Original Assignee
EMLUX Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by EMLUX Ltd filed Critical EMLUX Ltd
Publication of GB8723750D0 publication Critical patent/GB8723750D0/en
Publication of GB2198605A publication Critical patent/GB2198605A/en
Application granted granted Critical
Publication of GB2198605B publication Critical patent/GB2198605B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B5/00Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/20Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium
    • H04B5/22Capacitive coupling
    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B25/00Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
    • G08B25/01Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
    • G08B25/06Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using power transmission lines
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00007Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using the power network as support for the transmission
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H1/00Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network
    • H03H1/0007Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network of radio frequency interference filters
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01Frequency selective two-port networks
    • H03H7/0115Frequency selective two-port networks comprising only inductors and capacitors
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01Frequency selective two-port networks
    • H03H7/17Structural details of sub-circuits of frequency selective networks
    • H03H7/1741Comprising typical LC combinations, irrespective of presence and location of additional resistors
    • H03H7/1758Series LC in shunt or branch path
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01Frequency selective two-port networks
    • H03H7/17Structural details of sub-circuits of frequency selective networks
    • H03H7/1741Comprising typical LC combinations, irrespective of presence and location of additional resistors
    • H03H7/1766Parallel LC in series path
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B3/00Line transmission systems
    • H04B3/54Systems for transmission via power distribution lines
    • H04B3/56Circuits for coupling, blocking, or by-passing of signals
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H1/00Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network
    • H03H2001/0021Constructional details
    • H03H2001/0028RFI filters with housing divided in two bodies
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B2203/00Indexing scheme relating to line transmission systems
    • H04B2203/54Aspects of powerline communications not already covered by H04B3/54 and its subgroups
    • H04B2203/5462Systems for power line communications
    • H04B2203/5483Systems for power line communications using coupling circuits
    • H04B2203/5487Systems for power line communications using coupling circuits cables
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B2203/00Indexing scheme relating to line transmission systems
    • H04B2203/54Aspects of powerline communications not already covered by H04B3/54 and its subgroups
    • H04B2203/5462Systems for power line communications
    • H04B2203/5491Systems for power line communications using filtering and bypassing
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S40/00Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y04S40/121Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using the power network as support for the transmission

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Filters And Equalizers (AREA)
GB8723750A 1986-11-22 1987-10-09 Filtering electrical signals Expired - Fee Related GB2198605B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB868628004A GB8628004D0 (en) 1986-11-22 1986-11-22 Filtering electrical signals

Publications (3)

Publication Number Publication Date
GB8723750D0 GB8723750D0 (en) 1987-11-11
GB2198605A GB2198605A (en) 1988-06-15
GB2198605B true GB2198605B (en) 1990-05-23

Family

ID=10607811

Family Applications (2)

Application Number Title Priority Date Filing Date
GB868628004A Pending GB8628004D0 (en) 1986-11-22 1986-11-22 Filtering electrical signals
GB8723750A Expired - Fee Related GB2198605B (en) 1986-11-22 1987-10-09 Filtering electrical signals

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB868628004A Pending GB8628004D0 (en) 1986-11-22 1986-11-22 Filtering electrical signals

Country Status (1)

Country Link
GB (2) GB8628004D0 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2224407A (en) * 1988-10-28 1990-05-02 David Michael Rusby Reducing impedance of mains supply and mains filter
US5257006A (en) * 1990-09-21 1993-10-26 Echelon Corporation Method and apparatus for power line communications
GB2265777B (en) * 1992-04-01 1996-10-23 Plessey Telecomm Method and apparatus for supressing unwanted signals in a transmission path
FR2693323B1 (en) * 1992-07-01 1994-09-02 Merlin Gerin Electrical energy distribution installation with home automation communication structure.
US6127903A (en) * 1997-10-08 2000-10-03 Broadcom Homenetworking, Inc. Filter with manually operable signal carrier guides
DE19748762A1 (en) * 1997-11-05 1999-05-06 Ulrich Willburger Suppression of electromagnetic noise
EP1556947A4 (en) * 2002-10-17 2006-07-26 Ambient Corp Filter for segmenting power lines for communications
AU2003292439A1 (en) * 2002-12-19 2004-07-14 Broadband 21 Limited Power line communication capacitor filter
JP4811935B2 (en) 2006-07-27 2011-11-09 株式会社村田製作所 Noise filter array

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2148643A (en) * 1983-11-07 1985-05-30 Emlux Ltd Filtering electrical signals

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2148643A (en) * 1983-11-07 1985-05-30 Emlux Ltd Filtering electrical signals

Also Published As

Publication number Publication date
GB8628004D0 (en) 1986-12-31
GB8723750D0 (en) 1987-11-11
GB2198605A (en) 1988-06-15

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20031009