EP1028497B1 - Filtre planaire - Google Patents

Filtre planaire Download PDF

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Publication number
EP1028497B1
EP1028497B1 EP99125868A EP99125868A EP1028497B1 EP 1028497 B1 EP1028497 B1 EP 1028497B1 EP 99125868 A EP99125868 A EP 99125868A EP 99125868 A EP99125868 A EP 99125868A EP 1028497 B1 EP1028497 B1 EP 1028497B1
Authority
EP
European Patent Office
Prior art keywords
signal
planar filter
support plate
substrate
dielectric
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 - Lifetime
Application number
EP99125868A
Other languages
German (de)
English (en)
Other versions
EP1028497A3 (fr
EP1028497A2 (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 of rows to be connected arranged in rows and columns Signal pins, according to the preamble of independent claim 1; she further relates to a solderable in particular on a circuit board Connectors with such a planar filter.
  • Each capacitor array is made up from a dielectric ceramic plate, which in turn on apart from 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, like 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 also requires an alternating one Apply metallic coatings and dielectric coatings to one Carrier to whom there are no further requirements are. It is therefore (relatively) complex. Furthermore, there is a lack of such Planar filters with dielectric strength. To the dielectric strengths to improve, thicker dielectric layers are necessary. This reduces the available capacity, while that for one Coupling cross capacities then take on sizes, that no longer rule out crosstalk.
  • 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; such masses are 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 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 flat 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. there leads the metallization into the bushing so that the contact points the signal electrodes of the planar filter by capillary solid solder to be soldered so that the planar filter with soldering is detected and contacted.
  • 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 into 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 and 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 signal line, indicated by dashed lines) 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.
  • planar filter 10 can 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 signal electrodes 3 FIG. 1

Landscapes

  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Fixed Capacitors And Capacitor Manufacturing Machines (AREA)

Claims (10)

  1. Filtre planaire pour connecteur comportant une multiplicité de broches de transmission de signaux devant être reliées et qui sont disposées suivant des lignes et des colonnes, comportant un support (1), qui comporte, pour chacune de ces tiges de transmission de signaux, une ouverture et, dans la zone de chacune de ces ouvertures, un condensateur possédant une première armature, l'électrode de transmission de signaux, qui est reliée en formant des zones en forme ílots, à partir des traversées (2) pour les tiges de transmission de signaux, aux tiges de transmission de signaux associées, et comportant une seconde armature en tant qu'électrode de masse, qui recouvre toute la surface du support, en dehors des traversées (2) pour les tiges de transmission de signaux et de leur environnement immédiat, ainsi qu'un diélectrique en forme de couche situé entre les première et seconde armatures, caractérisé par un agencement monolithique, dans lequel le support (1) forme le diélectrique et est agencé sous la forme d'un bloc constitué d'une masse ayant une constante diélectrique plus élevée, est fritté après formation et perforation et est poli, et l'électrode de masse est disposée sur une surface de ce support et des électrodes de transmission de signaux des condensateurs sont disposées sur l'autre face du support, les surfaces du support (1) étant dressées de manière à être planes avant l'application d'un revêtement des condensateurs.
  2. Filtre planaire selon la revendication 1, caractérisé en ce que la constante diélectrique du matériau de support est supérieure à 5 000 et de préférence est supérieure à 10 000.
  3. Filtre planaire selon la revendication 2, caractérisé en ce qu'il est prévu comme matériau de support diélectrique une céramique à base de titanate.
  4. Filtre planaire selon la revendication 2, caractérisé en ce qu'il est prévu comme base de titanate pour la céramique, du titanate de baryum ou du titanate de strontium.
  5. Filtre planaire selon la revendication 2, caractérisé en ce qu'il est prévu comme base de titanate pour la céramique, du titanate de baryum ou de strontium, de préférence comportant un excès de baryum.
  6. Dispositif d'enfichage coudé multipolaire comportant un filtre planaire selon l'une des revendications 1 à 5, notamment pour le brasage sur une platine, dans lequel à chaque pôle est associé un conducteur continu de transmission de signaux, dont les extrémités peuvent être fixées par brasage sur un côté par des points de brasage correspondants de la platine et dont les autres extrémités sont agencées sous la forme de broches ou de douilles de connexion, caractérisé en ce que le filtre planaire (10) est supporté par une plaque d'appui (11) qui s'applique à plat sur l'une de ses faces et qui possède des ouvertures de traversée (11.1) selon une disposition qui correspond à la disposition des ouvertures de traversée (2) formées dans le support (1) du filtre planaire (10) ou à la disposition des conducteurs de transmission de signaux (12, 13).
  7. Dispositif d'enfichage coudé selon la revendication 6, caractérisé en ce que la plaque d'appui (11) est formée par une plaquette isolante à circuits imprimés.
  8. Dispositif d'enfichage coudé selon la revendication 6, caractérisé en ce que la plaque d'appui (11) est formée par une plaque de substrat céramique.
  9. Dispositif d'enfichage coudé selon la revendication 6, 7 ou 8, caractérisé en ce que les ouvertures de passage (11.1) de la plaque d'appui (11) sont métallisées au moins dans la zone d'une face frontale.
  10. Dispositif d'enfichage coudé selon la revendication 9, caractérisé en ce que les conducteurs de transmission de signaux (12, 13) sont brasés dans la zone de la plaque d'appui (11) de telle sorte que la brasure de chacun des points de brasage (14) est tirée par effet capillaire à travers les fentes présentes entre les conducteurs de transmission de signaux (12, 13) et la plaque d'appui (11), et le point de raccordement métallisé, qui leur correspond, de l'électrode correspondante de transmission de signaux (3) du filtre planaire (10) est saisi conjointement.
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 EP1028497A2 (fr) 2000-08-16
EP1028497A3 EP1028497A3 (fr) 2001-08-08
EP1028497B1 true 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)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001082670A1 (fr) 2000-04-20 2001-11-01 Siemens Aktiengesellschaft Dispositif de suppression des interferences
DE10041286A1 (de) * 2000-04-20 2001-10-31 Mannesmann Vdo Ag Entstöreinrichtung
DE10113912B4 (de) * 2001-03-21 2006-09-28 Siemens Ag Elektronische Vorrichtung

Family Cites Families (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
BR8401396A (pt) * 1983-03-30 1984-11-06 Du Pont Conector eletrico para filtrar ampla faixa de frequencias
US4741710A (en) * 1986-11-03 1988-05-03 Amphenol Corporation Electrical connector having a monolithic capacitor
NL8701661A (nl) * 1987-07-14 1989-02-01 Du Pont Nederland Filtereenheid voor connectoren.
DE9107385U1 (de) * 1991-06-14 1992-07-16 Filtec Filtertechnologie für die Elektronikindustrie GmbH, 59557 Lippstadt Mehrpoliger Steckverbinder für elektronische Signalleitungen
US5497129A (en) * 1994-06-27 1996-03-05 General Motors Corporation Filter elements having ferroelectric-ferromagnetic composite materials

Also Published As

Publication number Publication date
DE29902505U1 (de) 2000-03-23
EP1028497A3 (fr) 2001-08-08
DE59911042D1 (de) 2004-12-16
CA2293131A1 (fr) 2000-08-02
CA2293131C (fr) 2008-03-18
EP1028497A2 (fr) 2000-08-16

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