• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Broadband signal derivation. A wideband signal lead (12) is provided comprising a housing (10) and a cover (14) adapted to be able to be removed from and attached to the housing (10), the housing (10) comprising a power continuity connector (16) and the cover (14) comprising at least one external subscriber port (15), wherein a floating RF coupler (20) is disposed proximate to the power continuity connector (16). (Machine-translation by Google Translate, not legally binding)
    公开号:ES2680768A1
    申请号:ES201830062
    申请日:2018-01-25
    公开日:2018-09-10
    发明作者:Chandith Palawinna；Gareth Shelley；Paul Chapman
    申请人:Technetix BV；
    IPC主号:
    专利说明:

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    DESCRIPTION
    Broadband signal derivation Field of the invention
    This invention relates to a broadband signal bypass of the type used in broadband networks and cable television.
    Background of the invention
    To cope with the demand for transport of increasing amounts of broadband data over communication networks, operators of cable and broadband television networks have to update their networks to extend the operating frequency range and thus increase the width of band. When updating networks, it is preferred to use the existing infrastructure to reduce the overall cost of the update.
    For signal shunts, such as line distribution shunts, the increase in bandwidth is usually achieved by replacing the existing shunt front plate with an updated previous board designed to operate for a higher frequency range, usually up to 1218 MHz. and higher However, resonant effects occur with the components located in the unmodified rear junction box and this degrades the signals that pass through the branch, which is undesirable.
    The objective of the present invention is to reduce the signal degradation experienced in such an arrangement.
    Summary of the invention
    According to the first aspect of the invention, a broadband signal bypass is provided comprising a housing, usually a back box, and a cover, usually a front plate, adapted to be able to withdraw from and join the housing, the housing comprising a bar or a power continuity connector and the cover comprising at least one external subscriber port, in which a coupler
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    The floating RF is arranged close to the power continuity connector, in order to avoid resonance between the electrical components located in the housing and the electrical components located on the front plate.
    By having a floating RF coupler that is not grounded or at any voltage, it is possible to substantially reduce the resonant effects due to interference between the electrical components in the housing and the cover and reduce the signal degradation caused by such resonant effects.
    The housing may further comprise electrical components adapted to process signal frequencies in a first interval with the cover being adapted to process signal frequencies in a second interval, partially overlapping the second frequency range with the first frequency range and extending beyond the first frequency range Preferably the first interval will have an upper limit of 1000 MHz and the second interval will extend to at least 1218 MHz or preferably more.
    The cover may further comprise an insulating support or coating, usually in the form of plastic material, disposed on the electrical components associated with the cover and the floating RF coupler may be located on an external surface of the insulating coating to be placed close to the connector of power continuity
    According to another aspect of the invention, there is provided a cover, such as a front plate, comprising electrical components, at least one external subscriber port and an insulating coating disposed on the electrical components, in which a floating RF coupler is located on an outer face of the insulating coating.
    The coating may be shaped to ensure that the floating RF coupler is positioned close to a power continuity connector when the cover is connected to a cable housing branch.
    For such a cover, preferably the electrical components process signal frequencies that extend to at least 1218 MHz.
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    Preferably, the floating RF coupler is located inside the front cover or board since this is the component that will be replaced when a system is updated. Alternatively, the floating RF coupler can be mounted on an insulating sheath that can be located inside a housing. Therefore, when updating a branch, the existing front plate will be removed, the floating RF coupler in the insulating liner will be inserted in the back box to be close to the power continuity bar and then an updated previous plate will be attached to the housing .
    Therefore, according to another aspect of the invention, a floating RF coupler mounted on an insulating sheath is provided for insertion into a rear case of a broadband signal bypass.
    Preferably the floating RF coupler is connected to resistive means, such as a resistor, the resistive means acting to dissipate the energy and thus act as a damping resistor.
    The floating coupler and the attached resistor can be formed on a printed circuit board.
    Preferably the floating RF coupler consists of a copper track connected to a resistor, the copper track and the resistor forming a closed electrical path.
    The invention will now be described, by way of example, with reference to the accompanying drawings in which:
    Figure 1 shows a plan view of a rear case that is part of a broadband signal bypass;
    Figure 2 shows a graph illustrating the resonant effects that occur in a broadband signal bypass;
    Figure 3 shows a schematic diagram of an electrical configuration associated with the present invention;
    Figures 4 (a) and (b) show a floating RF coupler used according to the present invention;
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    Figure 5 shows a cross section through a broadband signal bypass incorporating a floating RF coupler;
    Figure 6 shows a cross-sectional plan view through a signal distribution branch showing the location of the RF coupler; Figure 7 shows an enlarged cross section of the shunt; and Figure 8 shows a graph illustrating the reduction in resonant effects within the signals carried by the shunt.
    Description
    Figure 1 shows a rear box 10 that is part of a signal distribution branch 12 that is used together with a front plate 14, see Figure 5, which has a plurality of external subscriber ports 15. As known in the technically, a broadband signal is routed through a network, branching out at multiple points to provide two-way signal communication between the subscribers and the header end operated by the network provider. A power cable normally supplies signal and power to a plurality of distribution leads connected in series through terminals in the back box. Each rear case 10 includes a power continuity bar 16 which ensures that the signal path is maintained in the event that the previous plate fails or is removed to be replaced by a modified previous plate. As the rear boxes are connected to the mains power supply, replacing them is difficult and time consuming. Therefore, when network updates are necessary, for example to extend the operating frequency range, the previous plate 14 is removed and replaced by an updated previous plate.
    When upgrading front plates with new front plates designed for a different frequency range from the existing installed rear boxes, resonant effects may occur as shown in Figure 2 in which a graph of noise versus frequency is shown and It produces a resonant effect at frequency 18, which is 1173 MHz, and a step can be seen in the signal. The resonant effect degrades the signal characteristics and occurs because the electrical components in the back box react with the components of the previous board updated to form resonant circuits.
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    To substantially reduce the resonant effects, the present invention provides a floating RF coupler 20 not connected to ground or to any reference voltage and which is arranged close to a power continuity bar 16, see Figure 3. The floating RF coupler 20 is in the form of a copper track connected in a closed loop 22 to the damping resistor 24. Normally the floating coupler 20 and the damping resistor 24 are formed on a printed circuit board 26 as shown in Figures 4 (a ) and (b), the copper track being substantially trapezoidal and normally having a length of 50 mm and a width of 8 mm. The damping resistor 24 can be selected to have any appropriate value depending on the resonant frequency and the coupling factor between the copper track 20 and the power connection bar 16, although a 1000 ohm resistor was used for the arrangement shown .
    The RF coupler 20 and its associated damping resistor 24 must be arranged close to the power continuity bar 16 if the resonant effects must be mitigated. If the component to be replaced during the updates is the front plate 14, normally the floating coupler 20 and the resistor 24 are glued or fit onto an insulating plastic liner 30 inside the front plate 14, see Figures 5 and 6, so that the insulating sheath 30 is disposed between the RF coupler 20 and any component in the front plate 14 that may be affected by the RF coupler. The RF coupler circuit 20, 24 is normally formed as an additional printed circuit board that fits over the insulating cover 30. When a modified front plate is connected to an existing back box within a network, the floating RF coupler 20 and the associated damping resistor 24 is placed close to the power dissipation bar, see Figure 7, so that the RF coupler 20 is approximately 13-20 mm from the power passage bar 16 and there will normally be a distance approximately 15 to 17 mm from the edge of the printed circuit board 26 to the center of the bar 16.
    The floating RF coupler 20 prevents the power that passes through the switching components in the back box from forming resonant circuits with the front plate components within the signal pass band and thus allows the use of existing rear boxes designed for 1000 MHz or less with modified front plates to operate for extended frequency bands of up to 1218 MHz or more.
    As can be seen in Figure 8, the floating coupler circuit formed by the coupler 20 and the resistor 24 provides a 0.8 dB reduction to the step, substantially improving the signal characteristics.
    权利要求:
    Claims (17)
    [1]
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    1. A broadband signal bypass comprising a housing and a cover adapted to be able to be removed from and attached to the housing, the housing comprising a power continuity connector and the cover comprising at least one external subscriber port, in which A floating RF coupler is arranged close to the power continuity connector.
    [2]
    2. A broadband signal bypass according to claim 1, wherein the housing further comprises electrical components adapted to process signal frequencies in a first interval and the cover further comprises electrical components adapted to process signal frequencies in a second interval. , extending the second frequency range beyond the first frequency range and partially overlapping with the first frequency range.
    [3]
    3. A broadband signal bypass according to claim 2, wherein the first interval has an upper limit of 1000 MHz and the second interval extends to at least 1218 MHz.
    [4]
    4. A broadband signal bypass according to claim 2 or claim 3, wherein the cover further comprises an insulating sheath with the floating RF coupler located on an outer face of the insulating sheath so that it can be placed close to the bar of power continuity
    [5]
    5. A broadband signal bypass according to any of the preceding claims, wherein the floating RF coupler is attached to a resistor.
    [6]
    6. A broadband signal bypass according to claim 5, wherein the floating coupler and the attached resistor are formed on a printed circuit board.
    [7]
    7. A broadband signal bypass according to any of the preceding claims, wherein the floating RF coupler consists of a copper track connected to a resistor, the copper track and the resistor forming a closed electrical path.
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    [8]
    8. A cover for a broadband signal bypass, the cover comprising electrical components, at least one external subscriber port and an insulating coating disposed on the electrical components, in which a floating RF coupler is located on an external face of the insulating coating to electrically insulate itself from the electrical components within the coating.
    [9]
    9. A cover according to claim 8, wherein the floating RF coupler is attached to a resistor.
    [10]
    10. A cover according to claim 9, wherein the floating coupler and the attached resistor are formed on a printed circuit board.
    [11]
    11. A cover according to any of claims 8 to 10, wherein the floating RF coupler consists of a copper track connected to a resistor, the copper track and the resistor forming a closed electrical path.
    [12]
    12. A cover according to any of claims 8 to 11, wherein the insulating coating is shaped to ensure that the floating RF coupler is positioned close to a power continuity connector when the cover is connected to a housing bypass of cable.
    [13]
    13. A cover according to any of claims 8 to 12, wherein the electrical components process signal frequencies that extend to at least 1218 MHz.
    [14]
    14. A housing for a broadband signal bypass comprising a power continuity connector and an insulating sheath where a floating RF coupler is located to be close to the power continuity connector.
    [15]
    15. A housing according to claim 14, wherein the floating RF coupler is attached to a resistor.
    [16]
    16. A housing according to claim 15, wherein the floating coupler and the attached resistor are formed on a printed circuit board.
    [17]
    17. A housing according to any of claims 14 to 16, wherein the floating RF coupler consists of a copper track connected to a resistor, the copper track and the resistor forming a closed electrical path.
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    同族专利:
    公开号 | 公开日
    PL424664A1|2018-09-10|
    GB2560184A|2018-09-05|
    US10637121B2|2020-04-28|
    PL237171B1|2021-03-22|
    ES2680768B2|2019-03-26|
    US20180254538A1|2018-09-06|
    GB2560184B|2022-03-02|
    GB201703394D0|2017-04-19|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3349345A|1965-04-26|1967-10-24|John R Winegard|Coupler for connecting a plurality of load pairs to a signal source|
    US4755776A|1987-03-06|1988-07-05|Broadband Networks, Inc.|Tap device for broadband communications systems|
    US6094211A|1996-08-15|2000-07-25|Com21, Inc.|TV and data cable system ingress noise blocker|
    US5909154A|1997-06-02|1999-06-01|Antec Corporation|Broadband signal tap with continuity bridge|
    US6728322B1|1998-06-02|2004-04-27|Ntt Mobile Communications Network, Inc.|Sequential decoder, and receiver using sequential decoder|
    US6262636B1|1998-07-20|2001-07-17|Antec Corporation|Apparatus for reversing direction of signal flow in a broadband signal tap|
    GB2394849A|1999-10-01|2004-05-05|Agilent Technologies Inc|Multi-channel replicating device for broadband optical signals, and systems including such devices|
    GB0224055D0|2002-10-16|2002-11-27|Bookham Technology Plc|Optical modulation devices|
    JP2005019496A|2003-06-24|2005-01-20|Nippon Antenna Co Ltd|Distributor|
    IL157285D0|2003-08-06|2004-02-19|Xtend Networks Ltd|A wideband catv tap device|
    JP5179519B2|2008-01-28|2013-04-10|パナソニック株式会社|Zoom lens system, imaging device and camera|
    US8912863B2|2009-10-26|2014-12-16|Xtend Networks Ltd.|CATV face plate device and method with extended frequency range|
    US8869223B2|2009-10-26|2014-10-21|General Instrument Corporation|Increased cable television tap bandwidth utilizing existing tap housings|
    US8646018B2|2009-10-26|2014-02-04|General Instrument Corporation|Increased cable television tap bandwidth utilizing existing tap housings|
    CN201878277U|2010-12-15|2011-06-22|杭州万隆光电设备有限公司|Electrical control broadband equalizer|
    CN203108868U|2013-03-06|2013-08-07|河海大学常州校区|Broadband ultrasonic generator based on multi-tap cascade inductance|
    GB2523165B|2014-02-17|2018-09-26|Technetix Bv|Cable television cable tap device|US10312607B2|2017-10-02|2019-06-04|Pct International, Inc.|Polarity-inverting telecommunication tap|
    法律状态:
    2018-09-10| BA2A| Patent application published|Ref document number: 2680768 Country of ref document: ES Kind code of ref document: A1 Effective date: 20180910 |
    2019-03-26| FG2A| Definitive protection|Ref document number: 2680768 Country of ref document: ES Kind code of ref document: B2 Effective date: 20190326 |
    优先权:
    申请号 | 申请日 | 专利标题
    GB1703394.5A|GB2560184B|2017-03-02|2017-03-02|Broadband signal tap|
    GB1703394|2017-03-02|
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