EP1028497B1 - Planarfilter - Google Patents
Planarfilter Download PDFInfo
- 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
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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)
Description
- Figur 01:
- Perspektivische Aufsicht auf die Signalelektrodenseite eines Planarfilters;
- Figur 02:
- Perspektivische Aufsicht auf die Masseelektrodenseite eines Planarfilters;
- Figur 03:
- Schnitt durch einen Planarfilter mit Schnittführung durch eine Reihe von Stift-Durchführungen;
- Figur 04:
- Winkelsteckvorrichtung mit gestütztem Planarfilter (Querschnitt, schematisch).
Claims (10)
- Planarfilter für Steckverbinder mit einer Vielzahl von in Reihen und Spalten angeordneter, zu verbindender Signalstifte, mit einem Träger (1). der für jede dieser Signalstifte eine Öffnung und im Bereich jeder dieser Öffnungen einen Kondensator mit einem ersten Belag, der Signalelektrode, die von den Stiftdurchführungen (2) der Signalstifte ausgehend inselförmige Bereiche bildend mit den zugeordneten Signalstiften verbunden ist, einem zweiten Belag als Masseelektrode, die die Fläche des Trägers, die, abgesehen von den Stiftdurchführungen (2) der Signalstifte und deren unmittelbarer Umgebung, ganzflächig überdeckt, sowie ein schichtförmiges Dielektricum zwischen dem erstem und zweiten Belag aufweist, gekennzeichnet durch einen monolithischen Aufbau, bei dem der Träger (1) das Dielektricum bildet und aus einer Masse mit höherer Dielektrizitätskonstanten zum Block geformt, nach Formung und Lochung gesintert, und geschliffen ist, und auf dessen eine Oberfläche die Masseelektrode und auf dessen andere Seite die Signalelektroden der Kondensatoren aufgebracht sind, wobei die Oberflächen des Trägers (1) vor dem Aufbringen der Beläge der Kondensatoren auf Ebenheit geläppt sind.
- Planarfilter nach Anspruch 1, dadurch gekennzeichnet, dass die Dielektrizitätskonstante des Trägermaterials größer als 5.000, vorzugsweise größer als 10.000 ist.
- Planarfilter nach Anspruch 2, dadurch gekennzeichnet, dass als dielektrisches Trägermaterial eine Keramik auf Titanat-Basis vorgesehen ist.
- Planarfilter nach Anspruch 2, dadurch gekennzeichnet, dass als Titanat-Basis für die Keramik Bariumtitanat oder Strontiumtitanat vorgesehen ist.
- Planarfilter nach Anspruch 2. dadurch gekennzeichnet, dass als Titanat-Basis für die Keramik Barium-Strontiumtitanat vorgesehen ist, vorzugsweise mit einem Barium-Überschuss.
- Vielpolige Winkelsteckvorrichtung mit einem Planarfilter nach einem der Ansprüche 1 bis 5, insbesondere zum Auflöten auf eine Platine, wobei jedem Pol ein durchgehender Signalleiter zugeordnet ist, dessen Enden auf einer Seite mit korrespondierenden Lötpunkten der Platine verlötbar sind, und dessen andere Enden als Steckerstifte oder Steckbuchsen ausgebildet sind, dadurch gekennzeichnet, dass das Planarfilters (10) mit einer an einer seiner Seiten flächig anliegende Stützplatte (11) abgestützt ist, die Durchführungsöffnungen (11.1) in einer Anordnung aufweist, die der Anordnung der Durchführungsöffnungen (2) in dem Träger (1) des Planarfilters (10) bzw. der Anordnung der Signalleitungen (12, 13) entspricht.
- Winkelsteckvorrichtung nach Anspruch 6, dadurch gekennzeichnet, dass die Stützplatte 11 von einer isolierenden Leiterplatte gebildet ist.
- Winkelsteckvorrichtung nach Anspruch 6, dadurch gekennzeichnet, dass die Stützplatte 11 von einer keramischen Substratplatte gebildet ist.
- Winkelsteckvorrichtung nach Anspruch 6. 7 oder 8, dadurch gekennzeichnet, dass die Durchführungsöffnungen (11.1) der Stützplatte (11) zumindest im Bereich einer Stirnseite metallisiert sind.
- Winkelsteckvorrichtung nach Anspruch 9, dadurch gekennzeichnet, dass die Signalleitungen (12, 13) im Bereich der Stützplatte (11) so verlötet werden, dass das Lot jeder der Lötstellen (14) kapillar durch die Spalte zwischen den Signalleitern (12, 13) und der Stützplatte (11) gezogen wird und die dazu korrespondierende metallisierte Anschluss-Stelle der korrespondierenden Signalelektrode (3) des Planarfilters (10) mit erfasst.
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 (de) | 2000-08-16 |
EP1028497A3 EP1028497A3 (de) | 2001-08-08 |
EP1028497B1 true EP1028497B1 (de) | 2004-11-10 |
Family
ID=8069299
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99125868A Expired - Lifetime EP1028497B1 (de) | 1999-02-02 | 1999-12-24 | Planarfilter |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1028497B1 (de) |
CA (1) | CA2293131C (de) |
DE (2) | DE29902505U1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1275280B1 (de) | 2000-04-20 | 2007-08-08 | Siemens Aktiengesellschaft | Entstöreinrichtung |
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)
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 |
-
1999
- 1999-02-02 DE DE29902505U patent/DE29902505U1/de not_active Expired - Lifetime
- 1999-12-24 CA CA002293131A patent/CA2293131C/en not_active Expired - Fee Related
- 1999-12-24 EP EP99125868A patent/EP1028497B1/de not_active Expired - Lifetime
- 1999-12-24 DE DE59911042T patent/DE59911042D1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE29902505U1 (de) | 2000-03-23 |
CA2293131A1 (en) | 2000-08-02 |
EP1028497A2 (de) | 2000-08-16 |
CA2293131C (en) | 2008-03-18 |
DE59911042D1 (de) | 2004-12-16 |
EP1028497A3 (de) | 2001-08-08 |
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