EP0298311B1 - High-frequency transformer - Google Patents

High-frequency transformer Download PDF

Info

Publication number
EP0298311B1
EP0298311B1 EP88110036A EP88110036A EP0298311B1 EP 0298311 B1 EP0298311 B1 EP 0298311B1 EP 88110036 A EP88110036 A EP 88110036A EP 88110036 A EP88110036 A EP 88110036A EP 0298311 B1 EP0298311 B1 EP 0298311B1
Authority
EP
European Patent Office
Prior art keywords
frequency transformer
projections
transformer according
wire
winding
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
EP88110036A
Other languages
German (de)
French (fr)
Other versions
EP0298311A1 (en
Inventor
Anton Dipl.-Ing. Schmeller (Fh)
Alois Hofer
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.)
Vogt Electronic AG
Original Assignee
Vogt Electronic AG
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 Vogt Electronic AG filed Critical Vogt Electronic AG
Priority to AT88110036T priority Critical patent/ATE71767T1/en
Publication of EP0298311A1 publication Critical patent/EP0298311A1/en
Application granted granted Critical
Publication of EP0298311B1 publication Critical patent/EP0298311B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/29—Terminals; Tapping arrangements for signal inductances
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F19/00—Fixed transformers or mutual inductances of the signal type
    • H01F19/04—Transformers or mutual inductances suitable for handling frequencies considerably beyond the audio range
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H01F5/04—Arrangements of electric connections to coils, e.g. leads
    • H01F2005/043—Arrangements of electric connections to coils, e.g. leads having multiple pin terminals, e.g. arranged in two parallel lines at both sides of the coil
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H01F5/04—Arrangements of electric connections to coils, e.g. leads
    • H01F2005/046—Details of formers and pin terminals related to mounting on printed circuits

Definitions

  • the invention relates to a high-frequency transformer according to the first part of patent claim 1.
  • the invention has for its object to provide a high-frequency transformer according to the first part of claim 1, which completely avoids the aforementioned disadvantages and can be automatically wound and further processed.
  • the high frequency transformer according to the invention can be produced in two versions, e.g. as a conventional component with connecting pins or as an SMD component with soldering pads for surface mounting.
  • Fig. 1 shows an example of a first embodiment of the high-frequency transformer according to the invention in three mutually perpendicular views a), b), and c).
  • 1 is the magnetically conductive two-hole core, which is preferably produced by the known injection molding method.
  • This core has warts 3 for defined orientation and fixation of the winding wires 2 at the edges of the holes.
  • the configuration of the core is designed so that a flange 4 allows snap-in attachment in the coil base 5.
  • the sector-like holes facilitate automatic winding.
  • the core also has a pin 7.
  • the coil base can be used both for conventional pinning and when used as an SMD component.
  • the foundation 6 it has square projections 8.
  • Fig. 2 shows another example of the high-frequency transformer according to the invention in SMD (surface mounted device) design.
  • the winding wire in the version according to Fig. 2 is automatically placed several times around the square projections 8, which are also suitable for pinning, and thus prepares the soldering points for SMD soldering. So that the winding wire cannot slip off, each of these projections 8 has a flange 9.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Multimedia (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Circuits Of Receivers In General (AREA)
  • Structure Of Receivers (AREA)

Abstract

A radio-frequency transformer is described for the distribution and branching of broadcast and television frequencies, whose production can be fully automated both for conventional and surface mounting technology. <IMAGE>

Description

Die Erfindung bezieht sich auf einen Hochfrequenztransformator gemäß dem ersten Teil des Patentanspruchs 1.The invention relates to a high-frequency transformer according to the first part of patent claim 1.

Für die Abzweigung und Verteilung von Hochfrequenzenzenergie, z.B. in Verstärkern, Anschlußdosen für Rundfunk und Fernsehen und im Breitbandkabelnetz, werden Hochfrequenztrafos und Richtkoppler (sog. Differentialübertrager), deren Wirkungsweise z.B. aus der DE-A-24 25 722 bekannt ist, einzeln oder mehrfach eingesetzt und daher in großen Stückzahlen verwendet. Bis heute hat sich aber die Herstellung derartiger Bauelemente nicht automatisieren lassen, da es bei der Bewicklung der Kerne, vorzugsweise solcher mit zwei Bohrungen (Zweilochkerne), sehr darauf ankommt, wie die Drähte auf dem Kern verteilt sind bzw. daß die einmal eingestellte Wicklungslage beibehalten wird (Verfahren hierzu bekannt aus DE-U-84 21 089, DE-A-2257 605). Dies war bisher nur durch Handarbeit zu erreichen. Außerdem mußten bei der Weiterverarbeitung die Drahtenden einzeln an die Lötstützpunkte der Schaltung angelegt werden.For the diversion and distribution of radio frequency energy, e.g. In amplifiers, junction boxes for radio and television and in the broadband cable network, high-frequency transformers and directional couplers (so-called differential transformers) are used, whose mode of operation e.g. is known from DE-A-24 25 722, used individually or several times and therefore used in large numbers. To date, however, the manufacture of such components has not been able to be automated, since when the cores are wound, preferably those with two bores (two-hole cores), it is very important how the wires are distributed on the core or that the winding position, once set, is maintained (method for this is known from DE-U-84 21 089, DE-A-2257 605). Until now, this could only be achieved by hand. In addition, the wire ends had to be placed individually at the soldering points of the circuit during further processing.

Der Erfindung liegt die Aufgabe zugrunde einen Hochfrequenztransformator gemäß dem ersten Teil des Patentanspruchs 1 zu schaffen, der die vorgenannten Nachteile vollständig vermeidet und automatisch bewickelt und weiterverarbeitet werden kann.The invention has for its object to provide a high-frequency transformer according to the first part of claim 1, which completely avoids the aforementioned disadvantages and can be automatically wound and further processed.

Die vorstehende Aufgabe wird durch die im zweiten Teil des Patentanspruchs 1 genannten Merkmale gelöst.The above object is achieved by the features mentioned in the second part of patent claim 1.

Der erfindungsgemäße Hochfrequenztransformator kann in zwei Versionen erzeugt werden, z.B. als konventionelles Bauteil mit Anschlußstiften oder als SMD-Bauteil mit Lötflächen zur Oberflächenmontage.The high frequency transformer according to the invention can be produced in two versions, e.g. as a conventional component with connecting pins or as an SMD component with soldering pads for surface mounting.

Abb. 1 zeigt als Beispiel eine erste Ausführung des erfindungsgemäßen Hochfrequenztransformators in drei zueinander senkrechten Ansichten a), b),und c). 1 ist der magnetisch leitende Zweilochkern, der vorzugsweise nach der bekannten Spritzgußmethode hergestellt wird. Dieser Kern weist zur definierten Orientierung und Fixierung der Wickeldrähte 2 an den Bohrungsrändern Warzen 3 auf. Außerdem ist die Konfiguration des Kernes so gestaltet, daß ein Flansch 4 die snap-in-Befestigung im Spulensockel 5 erlaubt. Die sektorenartigen Bohrungen erleichtern die automatische Bewicklung.Fig. 1 shows an example of a first embodiment of the high-frequency transformer according to the invention in three mutually perpendicular views a), b), and c). 1 is the magnetically conductive two-hole core, which is preferably produced by the known injection molding method. This core has warts 3 for defined orientation and fixation of the winding wires 2 at the edges of the holes. In addition, the configuration of the core is designed so that a flange 4 allows snap-in attachment in the coil base 5. The sector-like holes facilitate automatic winding.

Zur Erleichterung der Orientierung beim automatischen Einsetzen bei der Montage in der gedruckten Schaltung und zur Drahtführung besitzt der Kern noch einen Zapfen 7.To facilitate orientation during automatic insertion during assembly in the printed circuit and for wire guidance, the core also has a pin 7.

Der Spulensockel ist durch die universelle Ausgestaltung sowohl für konventionelle Bestiftung als auch bei Verwendung als SMD-Bauteil zu benützen. Für die Bestiftung 6 weist er quadratische Vorsprünge 8 auf.Thanks to its universal design, the coil base can be used both for conventional pinning and when used as an SMD component. For the foundation 6 it has square projections 8.

Abb. 2 zeigt als weiteres Beispiel den erfindungsgemäßen Hochfrequenztransformator in SMD (surface mounted device) Ausführung. Im Unterschied zur konventionellen Ausführung mit Bestiftung gemäß Abb. 1 wird der Wickeldraht bei der Ausführung nach Abb. 2 mehrmals automatisch um die auch für eine Bestiftung geeigneten quadratischen Vorsprünge 8 gelegt und bereitet somit die Lötstellen für die SMD-Lötung vor. Damit der Wikkeldraht nicht abrutschen kann, weist jeder dieser Vorsprünge 8 einen Flansch 9 auf.Fig. 2 shows another example of the high-frequency transformer according to the invention in SMD (surface mounted device) design. In contrast to the conventional version with pinning according to Fig. 1, the winding wire in the version according to Fig. 2 is automatically placed several times around the square projections 8, which are also suitable for pinning, and thus prepares the soldering points for SMD soldering. So that the winding wire cannot slip off, each of these projections 8 has a flange 9.

Die Miniaturisierung des Bauteils bis zu den Grenzen der automatischen Bewickelbarkeit und die Verwendung von hochpermeablen Ferritwerkstoffen erlauben einen Einsatz vom Rundfunk- bis in den Satellitenbereich (1.ZF).The miniaturization of the component to the limits of automatic windability and the use of highly permeable ferrite materials allow use from broadcasting to satellite (1.ZF).

Claims (4)

1. High-frequency transformer for frequencies of 5 to 1750 megahertz according to the manner of differential transmitter with twin-hole core (1) and correspondingly divided winding (2), characterised by the use of a magnetically conductive core (1), preferably of ferrite and preferably manufactured by injection moulding, provided with a foot flange (4) for the snap-in fastening in a coil socket (5) and at the end faces with knobs (3) for the wire guidance and fixing.
2. High-frequency transformer according to claim 1, characterised thereby that the coil socket (5) is structured in the manner that pins (6) can be inserted into prepared bores in projections (8), at the ends of which pins the winding wires (2) are conductively fixed, in order to get a component in conventional form.
3. High-frequency transformer according to claim 1, characterised thereby that one end of a winding wire (2) is laid each time around projections (8) of the coil socket, in order to get a surface-mounted device.
4. High-frequency transformer according to claim 3, characterised thereby that the projections (8) at the coil socket (5) have a flange (9) which is so structured that it prevents the wound-on wire (2) from falling off.
EP88110036A 1987-07-03 1988-06-23 High-frequency transformer Expired - Lifetime EP0298311B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88110036T ATE71767T1 (en) 1987-07-03 1988-06-23 HIGH FREQUENCY TRANSFORMER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3721956A DE3721956C2 (en) 1987-07-03 1987-07-03 High frequency transformer
DE3721956 1987-07-03

Publications (2)

Publication Number Publication Date
EP0298311A1 EP0298311A1 (en) 1989-01-11
EP0298311B1 true EP0298311B1 (en) 1992-01-15

Family

ID=6330800

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88110036A Expired - Lifetime EP0298311B1 (en) 1987-07-03 1988-06-23 High-frequency transformer

Country Status (3)

Country Link
EP (1) EP0298311B1 (en)
AT (1) ATE71767T1 (en)
DE (1) DE3721956C2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4129039C2 (en) * 1991-08-31 1995-05-04 Vogt Electronic Ag High frequency transformer for SMD assembly
DE4332638A1 (en) * 1993-09-24 1995-03-30 Siemens Matsushita Components Chip inductance
GB2301230B (en) * 1995-05-16 2000-02-23 Motorola Israel Ltd Radio frequency toroid assembly and a radio
DE19830967C2 (en) * 1998-07-10 2000-06-08 Epcos Ag Electromagnetic component
DE202005019496U1 (en) * 2005-12-14 2007-04-26 Neosid Pemetzrieder Gmbh & Co Kg Inductive miniature component e.g., for SMD assemblies, has entrance aperture extending to transverse bars normal to the plane of frame

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB402767A (en) * 1932-05-31 1933-11-30 Cossor Ltd A C Improvements in or relating to inductance coils
US2455355A (en) * 1945-09-24 1948-12-07 Edward E Combs Method of making spherical coils for variometers
DE2257605A1 (en) * 1972-11-24 1974-05-30 Bosch Elektronik Gmbh HIGH FREQUENCY TRANSMITTER
DE2344312B2 (en) * 1973-09-03 1978-02-02 Siemens AG, 1000 Berlin und 8000 München COIL ARRANGEMENT
DE2425722B2 (en) * 1974-05-28 1976-04-08 Siemens AG, 1000 Berlin und 8000 München BROADBAND DEVICE FOR HIGH-FREQUENCY SIGNALS OF THE VHF / UHF RANGE
DE3020574C2 (en) * 1980-05-30 1982-12-09 Werner 8340 Pfarrkirchen Schaffer Method for attaching the wire ends of transformer windings to the connection pins of a winding support
DE8421089U1 (en) * 1984-07-14 1986-02-20 ANT Nachrichtentechnik GmbH, 7150 Backnang High frequency transformer
DE8628266U1 (en) * 1986-10-23 1987-03-12 Lorenzen, Klaus, 74405 Gaildorf Device for storing electrical components on a circuit board

Also Published As

Publication number Publication date
ATE71767T1 (en) 1992-02-15
EP0298311A1 (en) 1989-01-11
DE3721956A1 (en) 1989-01-12
DE3721956C2 (en) 1995-12-07

Similar Documents

Publication Publication Date Title
DE69822818T2 (en) BROADBAND IMPEDANCE ADAPTATION PROBE
EP0059927A1 (en) Microwave receiving arrangement
EP0177759A1 (en) Electronic component, in particular for a chip inductor
DE2943861C2 (en) High frequency device
EP0298311B1 (en) High-frequency transformer
DE10157796A1 (en) Three-dimensional winding arrangement
DE69023696T2 (en) An electronic component with a holder.
DE29908388U1 (en) AC induction voltage source for a video amplifier
DE69009222T2 (en) Unitary trim capacitor.
EP0921538A2 (en) Electric component, in particular coil, preferably for SMD assembly technique
DE19651923C2 (en) Probe for the detection of alternating magnetic fields
DE102015205632A1 (en) Current transformer and current measuring device
DE69800001T2 (en) Stackable and low-cost transformer with embedded EMI filters
EP0272401A2 (en) Plug connector for a small motor
DE69009040T2 (en) Tunable monolithic broadband inductor.
EP0603909B1 (en) Microwave tubular core transformer
EP0371434A1 (en) Multipole suppression choke for data lines with multiple leads
EP0357608B1 (en) High-frequency component
GB2146847A (en) Electrical inductance device
EP0809264A1 (en) Device for mutually fixing of ferromagnetic cores and supports for electric windings in inductive components
DE3413242C2 (en)
EP1361625B1 (en) Blocking device for surface waves
WO2018228736A1 (en) Coil and electrical or electronic device having such a coil
DE202015003883U1 (en) Balun device for UHF signals
WO2022189603A1 (en) Transmitter with non-closed magnet core

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): AT FR GB IT SE

17P Request for examination filed

Effective date: 19881222

17Q First examination report despatched

Effective date: 19910521

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT FR GB IT SE

REF Corresponds to:

Ref document number: 71767

Country of ref document: AT

Date of ref document: 19920215

Kind code of ref document: T

ET Fr: translation filed
ITF It: translation for a ep patent filed

Owner name: BUGNION S.P.A.

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
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
EAL Se: european patent in force in sweden

Ref document number: 88110036.6

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

Ref country code: FR

Payment date: 20010525

Year of fee payment: 14

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

Ref country code: SE

Payment date: 20010528

Year of fee payment: 14

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

Ref country code: GB

Payment date: 20010621

Year of fee payment: 14

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

Ref country code: AT

Payment date: 20010630

Year of fee payment: 14

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

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

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020623

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020623

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

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020624

EUG Se: european patent has lapsed
GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20020623

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

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030228

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

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 NON-PAYMENT OF DUE FEES;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.

Effective date: 20050623