EP1028497A2 - Filtre planaire - Google Patents

Filtre planaire Download PDF

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Publication number
EP1028497A2
EP1028497A2 EP99125868A EP99125868A EP1028497A2 EP 1028497 A2 EP1028497 A2 EP 1028497A2 EP 99125868 A EP99125868 A EP 99125868A EP 99125868 A EP99125868 A EP 99125868A EP 1028497 A2 EP1028497 A2 EP 1028497A2
Authority
EP
European Patent Office
Prior art keywords
signal
planar filter
carrier
openings
pins
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
EP99125868A
Other languages
German (de)
English (en)
Other versions
EP1028497B1 (fr
EP1028497A3 (fr
Inventor
Meinolf Dingenotto
Frank Wallmeier
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.)
FILTEC GmbH Filtertechnologie fuer die Elektronikindustrie
Original Assignee
FILTEC GmbH Filtertechnologie fuer die Elektronikindustrie
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 FILTEC GmbH Filtertechnologie fuer die Elektronikindustrie filed Critical FILTEC GmbH Filtertechnologie fuer die Elektronikindustrie
Publication of EP1028497A2 publication Critical patent/EP1028497A2/fr
Publication of EP1028497A3 publication Critical patent/EP1028497A3/fr
Application granted granted Critical
Publication of EP1028497B1 publication Critical patent/EP1028497B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/719—Structural association with built-in electrical component specially adapted for high frequency, e.g. with filters
    • H01R13/7195—Structural association with built-in electrical component specially adapted for high frequency, e.g. with filters with planar filters with openings for contacts

Definitions

  • the invention relates to planar filters for connectors with a variety signal pins arranged in rows and columns to be connected, with a carrier that has an opening for each of these signal pins and in the area of each of these openings a capacitor with a first covering, connected to the assigned signal line, a second covering, for connection to mass, as well as a layered Dielectric between the first and second covering.
  • Each capacitor array is made up from a dielectric ceramic plate, which in turn on one side with the exception of the areas of the pin bushings continuous grounding electrodes and on the other side with the Connector pins of electrically connected island-shaped signal electrodes is provided, the application of the electrodes - as from US Pat. No. 4,007 296 known - done in the screen printing process, with the usual pastes based on precious metals (including palladium).
  • the ground electrodes go in lateral metallizations over that with the metallic casing connected the ground lead for the capacitors of the signal electrodes to the connector housing and then on to the connected device represent.
  • Another filter is formed by the fact that the Carrier either a ground electrode with cutouts for the connector pins or the number of corresponding to the number of pins Signal electrodes is applied, thereon a dielectric layer and finally the other electrode assignment. That is the Number of connector pins corresponding number of signal electrodes or a ground electrode with cutouts for the connector pins (EU-PS 0 124 264; U.S. Patent 3,267,342; U.S. Patent 3,544,434); this arrangement will then with a coating of a durable material, such as one Lacquer protected from external influences.
  • the carrier becomes formed by an aluminum oxide material to which the Electrodes with interposed dielectric layer in general are applied by means of screen printing technology.
  • planar filters lack dielectric strength.
  • thicker ones dielectric layers necessary. Then take them for a coupling decisive cross capacitances to sizes that are crosstalk no longer exclude.
  • Such an arrangement with as classic surface capacitors trained capacitors higher Dielectric strength at which these form interference capacities and in This describes certain cases that can interfere with signal transmission German utility model 297 12 001.8.
  • the object on which the invention is based is derived from this, according to which a generic planar filter is to be proposed, in which interference capacities between the signal electrodes can be suppressed, the economical and simple can be manufactured and used safely.
  • the planar filter has a monolithic structure on, the carrier made of a mechanically rigid and rigid layer a ceramic mass with a higher dielectric constant is.
  • ceramic masses those with a dielectric constant are suitable of not less than 5,000; are such masses for example barium titanate compositions;
  • the dielectric constant is advantageous greater than 10,000.
  • the plate is formed, which is used for carrying out the necessary pins are provided, burned and diminished; after the thermal treatment, the so produced Ground plate to achieve flatness.
  • the thickness of the carrier ensures its dielectric strength.
  • the capacitors for each of the pin feedthroughs are assigned by these associated signal electrodes and a ground electrode.
  • this plate of the ceramic carrier thus prepared carries the ground electrode, the other side is with the signal electrodes of the capacitors provided with conductive printing paste in the Screen printing is applied. You can use it to make a connection to the ground housing of the connector the ground electrode led at least to one of the outer narrow sides of the carrier become.
  • Each signal electrode that has a feed-through opening for the associated one Plug pin surrounds can be inserted into the bushing be what an improved way of soldering to the subject Plug pin results. Because the ground electrode is one of the side faces of the carrier, apart from the signal pin penetration points and their immediate surroundings, completely covered, good shielding is achieved. The one on the other side of the carrier arranged signal electrodes form from the Penetration points of the signal pins island-shaped areas, which essentially surround the signal pin bushing and laterally to Extend the edge of the beam.
  • both sides are facing the Application of the coatings of the capacitors lapped to flatness. This so particularly smooth and even surface ensures one of deviating geometrical relationships undisturbed field course.
  • a ceramic is advantageously used as the mass for this dielectric Titanate base provided; titanates of Alkaline earths, such as from barium. Strontium or a mixture thereof used. These masses - sintered as ceramics - have sufficient mechanical strength and they have higher dielectric constants, so that even with larger thicknesses of the carrier the desired Capacities can be achieved.
  • this planar filter is supported by a support plate, which are arranged on one of the two sides of the planar filter, lies flat against this.
  • the application on the side is advantageous, on which mechanical loads are to be expected.
  • the support plate - An insulating circuit board or a preferably ceramic Substrate plate - has the same hole pattern for those to be carried out Signal wire on how the planar filter.
  • These implementations are metallized at least in the area of one end face, so that the Signal conductors can be soldered to the support plate.
  • the carrier 1 of a planar filter forms a block made of an alkaline earth titanate, such as barium titanate, strontium titanate or barium strontium titanate, with an excess of barium expecting better results leaves.
  • This block shown here rectangular with its Pen bushings 2 is shaped and sintered and - to achieve on a flat surface, at least finely ground.
  • the signal electrodes 3 are applied, which up to, preferably even up to the openings of each assigned pin bushing 2 are performed.
  • the other side surface of the carrier 1 is continuously coated with the ground electrode 4, the pin bushings 2 as well as an immediate environment are spared from it.
  • This ground electrode 4 is when inserted of the planar filter in a (not shown) housing with a metallic counterpart using a silver or palladium conductive adhesive connected so that an electrical ground connection is made.
  • the - shown continuously - ground electrode 4 covers (almost) the total area of the carrier 1, apart from the feed-through recesses 5, make sure that conclusions or rollovers between through the pin bushings 2 (not shown) Pins the implemented signal lines and the ground electrode 4 are prevented.
  • This ground electrode 4 is not immediate here shown on the edge of the side surface of the carrier 1. It understands it goes without saying that this metallic layer also up can be guided on at least one of the edge surfaces for manufacturing the ground connection to the housing of a connector.
  • FIG. 4 shows an advantageous application of a supported filter 10 in a plug connector 15 with the plug housing 16 and the plug pins 17, which are held by means of the insulating pin holder 18: a support plate 11, a printed circuit board, a substrate or the like. is provided with lead-through openings 11.1 for a number of signal conductors 12 and 13 (in the case of 3-row connectors, also the dashed, unmarked signal line) so that the image of these openings 11.1 matches the image of the openings in the carrier of the planar filter 10 and the support plate 11 is flat can be applied to the planar filter 10.
  • the openings 11.1 are metallized at least at the edges, advantageously also in the lumen.
  • the planar filter 10 can thus be used together with the support plate 11 (for example in a plug connector 15).
  • the signal lines 12 and 13 passing through the support plate 11 and planar filter 10 are soldered to the metallizations in the region of the openings 11.1 of the support plate 11; the solder joints 14 fix the signal conductors 12 and 13 on the support plate 11.
  • the openings 11.1 in the support plate 11 are designed such that the solder 14.1 capillary into the gap between the inner wall of the openings 11.1 and the outer surface of the respective signal conductors 12 or 13 is pulled and is thus guided through the individual openings 11.1 provided with the assigned signal conductors 12 or 13 to the assigned exposed signal electrode 3.
  • the electrical connection of the signal conductors 12 and 13 to the assigned one of the signal electrodes is thus ensured.
  • This design has the advantage that the signal lines 12 can initially be installed stretched; subsequent bending in the desired directions no longer mechanically stresses the planar filter 10.

Landscapes

  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
EP99125868A 1999-02-02 1999-12-24 Filtre planaire Expired - Lifetime EP1028497B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29902505U DE29902505U1 (de) 1999-02-02 1999-02-02 Planarfilter
DE29902505U 1999-02-12

Publications (3)

Publication Number Publication Date
EP1028497A2 true EP1028497A2 (fr) 2000-08-16
EP1028497A3 EP1028497A3 (fr) 2001-08-08
EP1028497B1 EP1028497B1 (fr) 2004-11-10

Family

ID=8069299

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99125868A Expired - Lifetime EP1028497B1 (fr) 1999-02-02 1999-12-24 Filtre planaire

Country Status (3)

Country Link
EP (1) EP1028497B1 (fr)
CA (1) CA2293131C (fr)
DE (2) DE29902505U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1244341A2 (fr) * 2001-03-21 2002-09-25 Siemens Aktiengesellschaft Dispositif électronique

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE50112832D1 (de) 2000-04-20 2007-09-20 Siemens Ag Entstöreinrichtung
DE10041286A1 (de) * 2000-04-20 2001-10-31 Mannesmann Vdo Ag Entstöreinrichtung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2422268A1 (fr) * 1978-04-06 1979-11-02 Eurofarad Element de connecteur electrique comprenant des capacites de filtrage integrees
EP0124264A1 (fr) * 1983-03-30 1984-11-07 E.I. Du Pont De Nemours And Company Connecteur à filtre incorporé
US4741710A (en) * 1986-11-03 1988-05-03 Amphenol Corporation Electrical connector having a monolithic capacitor
EP0299563A1 (fr) * 1987-07-14 1989-01-18 Connector Systems Technology N.V. Unité de filtrage pour connecteurs
US5242318A (en) * 1991-06-14 1993-09-07 Filtec Filtertechnologie Fur Die Elektronikindustrie Gmbh Multipole connector for electronic signal lines
EP0690528A2 (fr) * 1994-06-27 1996-01-03 General Motors Corporation Eléments de filtre ayant des matériaux composites ferroélectrique-ferromagnétique

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2422268A1 (fr) * 1978-04-06 1979-11-02 Eurofarad Element de connecteur electrique comprenant des capacites de filtrage integrees
EP0124264A1 (fr) * 1983-03-30 1984-11-07 E.I. Du Pont De Nemours And Company Connecteur à filtre incorporé
US4741710A (en) * 1986-11-03 1988-05-03 Amphenol Corporation Electrical connector having a monolithic capacitor
EP0299563A1 (fr) * 1987-07-14 1989-01-18 Connector Systems Technology N.V. Unité de filtrage pour connecteurs
US5242318A (en) * 1991-06-14 1993-09-07 Filtec Filtertechnologie Fur Die Elektronikindustrie Gmbh Multipole connector for electronic signal lines
EP0690528A2 (fr) * 1994-06-27 1996-01-03 General Motors Corporation Eléments de filtre ayant des matériaux composites ferroélectrique-ferromagnétique

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1244341A2 (fr) * 2001-03-21 2002-09-25 Siemens Aktiengesellschaft Dispositif électronique
EP1244341A3 (fr) * 2001-03-21 2005-09-21 Siemens Aktiengesellschaft Dispositif électronique

Also Published As

Publication number Publication date
CA2293131A1 (fr) 2000-08-02
DE59911042D1 (de) 2004-12-16
EP1028497B1 (fr) 2004-11-10
EP1028497A3 (fr) 2001-08-08
CA2293131C (fr) 2008-03-18
DE29902505U1 (de) 2000-03-23

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