EP0299125A1 - Tiefpass-Propagationsstruktur - Google Patents

Tiefpass-Propagationsstruktur Download PDF

Info

Publication number
EP0299125A1
EP0299125A1 EP87401662A EP87401662A EP0299125A1 EP 0299125 A1 EP0299125 A1 EP 0299125A1 EP 87401662 A EP87401662 A EP 87401662A EP 87401662 A EP87401662 A EP 87401662A EP 0299125 A1 EP0299125 A1 EP 0299125A1
Authority
EP
European Patent Office
Prior art keywords
structure according
conductor
conductors
hot
outside
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.)
Granted
Application number
EP87401662A
Other languages
English (en)
French (fr)
Other versions
EP0299125B1 (de
Inventor
Ferdy Mayer
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.)
Individual
Original Assignee
Individual
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
Priority to FR8600617A priority Critical patent/FR2593329B1/fr
Application filed by Individual filed Critical Individual
Priority to DE19873783765 priority patent/DE3783765T2/de
Priority to EP19870401662 priority patent/EP0299125B1/de
Publication of EP0299125A1 publication Critical patent/EP0299125A1/de
Application granted granted Critical
Publication of EP0299125B1 publication Critical patent/EP0299125B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B11/00—Communication cables or conductors
    • H01B11/02—Cables with twisted pairs or quads
    • H01B11/12—Arrangements for exhibiting specific transmission characteristics
    • H01B11/14—Continuously inductively loaded cables, e.g. Krarup cables
    • H01B11/146—Continuously inductively loaded cables, e.g. Krarup cables using magnetically loaded coatings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B11/00—Communication cables or conductors
    • H01B11/18—Coaxial cables; Analogous cables having more than one inner conductor within a common outer conductor
    • H01B11/1895—Particular features or applications
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/04—Flexible cables, conductors, or cords, e.g. trailing cables
    • H01B7/043—Flexible cables, conductors, or cords, e.g. trailing cables attached to flying objects, e.g. aircraft towline, cables connecting an aerodyne to the ground

Definitions

  • Electromagnetic propagation structures such as wires, cables, absorbing three-pole or quadrupole components have been described in the literature, see for example: - Presentation by Dr. F. MAYER in New York in 1965 and his publication in IEEE Transactions on Electromagnetic Accounting, Vol. EMC-8, no.3 , September, 1966: Electromagnetic Comptability: Anti-Interference Wires, Cables, and filters. - Presentation by Dr. F. MAYER in Washington (March 1983): IEEE-EMC Conference: Absorptive Low Pass Cables: State of the Art and an Outlook to the Future.
  • the main purpose of this patent is to describe an "inverted" structure, in which the earth conductor is at the center of the structure (core), and the hot conductor (s) placed helically around the earth conductor.
  • absorption can be obtained by inserting the absorbent medium between the core and the propeller (s) (or even outside), or by the very quality of the conductive core.
  • the quadrupole capacity of the structure is essentially defined, that is to say that the absorption is essentially insensitive to the proximity of an external mass; as in general, the structure will be insensitive to external stray fields, despite the absence of shielding.
  • Another object of this patent is to describe an unshielded structure, but insensitive to external parasitic fields (for example Electromagnetic Pulse), as the useful signal coupled or radiated towards the outside will be reduced (Tempest effect).
  • External parasitic fields for example Electromagnetic Pulse
  • the earth conductor (core) can finally be made of steel strand, very solid mechanically, and serve as fixing to the structure.
  • Another object of this patent is to describe a structure in which the (hot) conductors are not stressed by deformations, vibrations, twists.
  • the advantage of the invention appears, for example, in the case of the use in the form of cables for ballistic vehicles, subjected to strong vibrations or even repeated bending, as is the case for cables intended for electronic robots. .
  • the interest of the invention appears also for cables for automotive electronic sensors, serving as a connection between a mobile point (for example on an engine) and a fixed point (for example chassis).
  • a central metallic conductor 1 consisting of a copper conductor or strand, a wire or strand of metallized fibers, a steel strand trickster, etc. constitutes the core of the structure.
  • An insulating layer 2 separates this core from the hot metallic conductor 3 (itself insulated) transporting the signal or the power of the structure.
  • An outer layer 4 isolates and protects the assembly.
  • linear inductance of such a structure is increased by the arrangement of the hot conductor in a helix, its linear capacity being defined essentially by the capacity between the conductor 3 and the core 1, as opposed to the presence of mass, (or presence other cables) outside: in other words, the structure is insensitive from the point of view of capacitive coupling with the outside; it is the same from the magnetic point of view, because of the helical structure.
  • the conductive core can be made of magnetic metal (steel, Fer-Nickel alloy etc.), this embodiment further increasing the linear inductance of the structure.
  • Such a structure can comprise several conductors, for a symmetrical or polyphase transmission.
  • the core 1 behaves like a conductive core in the solenoid formed by the conductor 3: its subdivision determines eddy currents (equivalent to magnetic losses) which are added to the possible dielectric losses of the insulating layer 2. Additional losses may be provided by magnetic absorption.
  • a layer 5 of magnetic absorbent composite material, substantially non-conductive is provided: if the core 1 is a ferromagnetic conductor, it is added to the core a non-conductive ferromagnetic part, a combination which is very favorable in low-pass applications. (Reduction of saturation effects, efficiency at very high frequencies).
  • this cable is insensitive to external parasites and, despite the absence of shielding, absorbs HF parasites conducted by a low-pass filter effect and is of very high mechanical reliability.
  • the conductive core 1 is constituted by a strand of fine copper strands, with an outside diameter of approximately 0.8 mm.
  • the layer of absorbent composite material 5 consisting of a mixture of ferrite powder included in a PVC matrix (described in the aforementioned patent) is extruded with an outside diameter of 2.5 mm.
  • Two copper conductors 3 ′ and 3 ⁇ varnished with a diameter of 0.3 mm (which may be of the joined type such as the "BIFILREX” from the company THOMPSON), are wound in parallel at a pitch of 0.8 mm, this spacing allowing very great flexibility of the cable.
  • the outer layer 4 is made of special PVC, or any other plastic or elastomer and has a diameter of about 4.5 mm.
  • Such a cable presents the attenuation as a function of the frequency represented on the graph of FIG. 8.
  • the attenuation is given by the meter, as a function of the frequency, the measurement being made over a length of 0.21 m (this determining maxima and minima at lower frequencies, due to the mismatching effects, as will be seen below).
  • Such characteristics are extremely favorable for the transmission of signals (of frequencies lower than some 0.1 MHz), in very parasitic medium as it is the case of the position sensors for the ignition of the cars, for example which are subjected to ignition parasites.
  • This application is also very unfavorable to conventional screened cables, with their problems of reliability of connections, due to the vibrations and the generally difficult environment. Furthermore, the installation is facilitated by the fact that this cable can be "stripped” like any insulated wiring wire.
  • the conductive core is constituted by a strand of 7 strands of 0.25 mm diameter in mild steel, constituting a ferromagnetic (grounded) core: it is covered with the same extruded absorbent magnetic mixture 5 of 2.5 mm outside diameter. Then two varnished copper conductors 3 ′ and 3 ⁇ of 0.75 mm in diameter form a double helix, wrapped in 2.5 mm steps.
  • This embodiment with its external insulation 4, constitutes a typical example of a power cable with high immunity against lightning strikes, EMI and TEMPEST.
  • the conductive core 1 is actually constituted by the external shielding of a coaxial structure composed of one or more coaxial cables, twisted pairs etc ... not detailed in the figure.
  • This example is intended to show the extension of the concept of a soul connected to ground, which can become that, more generally, of a conductive substrate, internal to the propeller.
  • all of the embodiments described may comprise, in addition, outside, a layer of absorbent magnetic composite material, or else a layer of conductive composite material according to a conventional technique for absorbing common parasitic currents. external (as described in French patent No. 7,833,385 and French patent No. 7,918,065).
  • a good conductive screen (braid, colaminate, etc.) can be placed outside, if one wishes to be highly insensitive to external influences: such an embodiment is useful in applications against IEM in aerospace applications.
  • the various schematic embodiments described above can be produced in length, in the form of cables, examples of which have been described. Produced in a very collected form, they give rise to electronic components: in this case obviously, the assembly can be rigid, at least in part, and, for example the absorbent composite 5 replaced by compact ferrite.
  • FIG. 9 thus indicates the attenuations achieved with a typical small component produced by an iron core of 0.8 mm in diameter, connected to ground, covered with a layer of absorbent composite material of 2.3 mm in diameter and of 15 mm in length (determining the length of the component), covered with contiguous turns of varnished copper wire 0.05 mm in diameter.
  • This component represents a typical broadband filter for printed circuits, with a minimum loss of 20 dB from 3 MHz to 10 MHz.
  • these components lend themselves to being produced in the form of a continuous structure (like a cable); and the component is obtained by cutting.
  • the conductive core to ground can itself be produced by a helical conductor, inside or parallel to the conductor (s). ) hot (s) transmitting the signal to electrical power.
  • An exemplary embodiment corresponding to FIG. 10 is equivalent to the embodiment of the type of FIG. 2.
  • a core itself constituted by a conductive helix of smaller diameter
  • this is here d 'A typical realization of cables with maximum reliability, as they are required for electronic robots for example.
  • the structures of the helical conductors lend themselves easily to the introduction of the effect of interfacial resonances (reference of the cited patent), by the variation of the pitch of the helix and / or even the variation of the capacitance of the helix with respect to the earth conductor.

Landscapes

  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Details Of Aerials (AREA)
EP19870401662 1986-01-17 1987-07-15 Tiefpass-Propagationsstruktur Expired - Lifetime EP0299125B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR8600617A FR2593329B1 (fr) 1986-01-17 1986-01-17 Structure a propagation passe-bas
DE19873783765 DE3783765T2 (de) 1987-07-15 1987-07-15 Tiefpass-propagationsstruktur.
EP19870401662 EP0299125B1 (de) 1987-07-15 1987-07-15 Tiefpass-Propagationsstruktur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19870401662 EP0299125B1 (de) 1987-07-15 1987-07-15 Tiefpass-Propagationsstruktur

Publications (2)

Publication Number Publication Date
EP0299125A1 true EP0299125A1 (de) 1989-01-18
EP0299125B1 EP0299125B1 (de) 1993-01-20

Family

ID=8198235

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19870401662 Expired - Lifetime EP0299125B1 (de) 1986-01-17 1987-07-15 Tiefpass-Propagationsstruktur

Country Status (3)

Country Link
EP (1) EP0299125B1 (de)
DE (1) DE3783765T2 (de)
FR (1) FR2593329B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19638372B4 (de) * 1995-09-20 2006-09-28 Denso Corp., Kariya Anschlußkabel für einen Sensor
US7705241B2 (en) 2006-03-09 2010-04-27 Amphenol Corporation Coiled wire armored cable

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4842553A (en) * 1988-02-26 1989-06-27 W. L. Gore & Associates, Inc. Method and assembly for terminating a conductive polymer-shielded coaxial electrical cable
JPH0817249A (ja) * 1994-06-30 1996-01-19 Sumitomo Wiring Syst Ltd 巻線型雑音防止用高圧抵抗電線
CN104167246A (zh) * 2014-08-11 2014-11-26 绵阳市长信电线电缆有限公司 一种新型地埋式螺旋泄漏感应线缆及其制备方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE24813E (en) * 1954-05-11 1960-04-19 Electromagnetic delay cable
GB1134636A (en) * 1964-11-26 1968-11-27 Electronique Et D Automatique Improvements in or relating to devices for the transmission of electrical energy
EP0087371A2 (de) * 1982-02-23 1983-08-31 Ferdy Mayer E.M.I.-geschütztes Kabel mit auf symetrische/asymetrische Weise gesteuerte Dämpfung

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE24813E (en) * 1954-05-11 1960-04-19 Electromagnetic delay cable
GB1134636A (en) * 1964-11-26 1968-11-27 Electronique Et D Automatique Improvements in or relating to devices for the transmission of electrical energy
EP0087371A2 (de) * 1982-02-23 1983-08-31 Ferdy Mayer E.M.I.-geschütztes Kabel mit auf symetrische/asymetrische Weise gesteuerte Dämpfung

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19638372B4 (de) * 1995-09-20 2006-09-28 Denso Corp., Kariya Anschlußkabel für einen Sensor
DE19638372B8 (de) * 1995-09-20 2007-01-25 Denso Corp., Kariya Anschlußkabel für einen Sensor
US7705241B2 (en) 2006-03-09 2010-04-27 Amphenol Corporation Coiled wire armored cable

Also Published As

Publication number Publication date
DE3783765D1 (de) 1993-03-04
FR2593329B1 (fr) 1989-06-30
EP0299125B1 (de) 1993-01-20
DE3783765T2 (de) 1993-07-08
FR2593329A1 (fr) 1987-07-24

Similar Documents

Publication Publication Date Title
EP0375506B1 (de) Halbstarre Kabel für Mikrowellenübertragung
US4683450A (en) Line with distributed low-pass filter section wherein spurious signals are attenuated
US4506235A (en) EMI Protected cable, with controlled symmetrical/asymmetrical mode attenuation
US4383225A (en) Cables with high immunity to electro-magnetic pulses (EMP)
US4510346A (en) Shielded cable
JP4193396B2 (ja) 伝送用メタルケーブル
US20010042632A1 (en) Filter for wire and cable
US5349133A (en) Magnetic and electric field shield
US7525045B2 (en) Cable for high speed data communications
US6225563B1 (en) Audio signal interconnect cable
US4486721A (en) High frequency attenuation core and cable
US6778034B2 (en) EMI filters
US7977574B2 (en) Cable for high speed data communications
FR2534074A1 (fr) Lignes absorbantes hf avec une frequence de coupure passe-bas controlee
EP0554160B1 (de) Elektrisches Hochfrequenzkabel
US20180268965A1 (en) Data cable for high speed data transmissions and method of manufacturing the data cable
US6023201A (en) Electrical signal transmission device protected against electromagnetic interference
US5571992A (en) Lightweight shielded cable assembly
EP0299125B1 (de) Tiefpass-Propagationsstruktur
US7531749B2 (en) Cable for high speed data communications
CN1193379C (zh) 改善了传输特性的同轴电缆
JPH09199237A (ja) コネクタ付きシールドケーブル
US2968775A (en) Electromagnetic wave attenuator
CN219610102U (zh) 线缆组件及电子设备
CN111681818B (zh) 耐辐射低衰减千兆网线及其制备方法

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE CH DE ES GB IT LI NL SE

17P Request for examination filed

Effective date: 19890713

17Q First examination report despatched

Effective date: 19910816

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE CH DE ES GB IT LI NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 19930120

Ref country code: GB

Effective date: 19930120

Ref country code: SE

Effective date: 19930120

Ref country code: NL

Effective date: 19930120

REF Corresponds to:

Ref document number: 3783765

Country of ref document: DE

Date of ref document: 19930304

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19930501

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 19930120

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Effective date: 19930731

Ref country code: BE

Effective date: 19930731

Ref country code: LI

Effective date: 19930731

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
BERE Be: lapsed

Owner name: MAYER FERDY

Effective date: 19930731

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

Ref country code: CH

Ref legal event code: AUV

Free format text: LE BREVET CI-DESSUS EST TOMBE EN DECHEANCE FAUTE DE PAIEMENT, DE LA 7E ANNUITE.

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19940913

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19960402