Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01Q—ANTENNAS, i.e. RADIO AERIALS
  • H01Q21/00—Antenna arrays or systems
  • H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
  • H01F17/00—Fixed inductances of the signal type
  • H01F17/04—Fixed inductances of the signal type with magnetic core
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
  • H01F5/00—Coils
  • H01F5/02—Coils wound on non-magnetic supports, e.g. formers
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01Q—ANTENNAS, i.e. RADIO AERIALS
  • H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
  • H01Q7/06—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop with core of ferromagnetic material
  • H01Q7/08—Ferrite rod or like elongated core
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
  • H01F5/00—Coils
  • H01F5/02—Coils wound on non-magnetic supports, e.g. formers
  • H01F2005/027—Coils wound on non-magnetic supports, e.g. formers wound on formers for receiving several coils with perpendicular winding axes, e.g. for antennae or inductive power transfer
• • 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
  • H01F27/292—Surface mounted devices
• • 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
  • H01F27/32—Insulating of coils, windings, or parts thereof
  • H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
  • H01F27/325—Coil bobbins
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
  • H01F3/00—Cores, Yokes, or armatures

Definitions

• the invention relates to an inductive miniature component, in particular an antenna, with a winding body designed as a flat, rectangular or polygonal component, on which three coil windings are applied such that the axes of these coil windings in the three spatial directions (X, Y, Z), wherein a first and a second coil winding are wound around the width and length of the winding body in two spatial directions perpendicular to one another in the center plane of the winding body, and the third coil winding around the circumference along the narrow side of the winding body is wound around it, the winding body having on its underside guide elements for guiding the third coil winding on one of its sides and the component having a ferrite core encompassed by the coil windings.
• the winding body, on which the three coil windings are applied consists at least partially of femt material, which poses certain difficulties in terms of production technology. Furthermore, difficulties often arise during manufacture, since individual steps of the manufacturing process, in particular the application of the third coil winding, have to be carried out manually.
• the invention has for its object to form an inductive miniature component, in particular an antenna, with the features described at the beginning and in the preamble of claim 1 in such a way that a less complex production is possible, which can be carried out in particular fully automatically, but in particular one ensures the secure fit of the third coil winding.
• the winding body consists of plastic material and has within its outer surfaces a receiving surface containing guide surfaces, essentially parallel to the central plane, into which the ferrite core designed as a flat component is inserted or inserted, as in the characterizing part of the patent claim 1 specified.
• a basic idea of the invention is to manufacture the winding body of the component entirely from plastic in such a way that it has a receiving space inside its outer surface, into which a ferrite core designed as a flat component is inserted fully automatically from above or inserted from the side. Subsequently, the three coil windings are also automatically applied to the winding body. In this case, the third coil winding is held in a secure fit by the guide elements arranged on the winding former, which form receiving pockets through which the turns of the third coil winding are passed. The guide elements are arranged in the corner areas of the winding body, so that the third coil winding is guided particularly securely in these areas.
• the miniature inductive component according to the invention can be produced quickly and inexpensively on appropriately equipped machines.
• Figure 1 seen in a first embodiment of the winding body of a miniature component only partially wound with two windings from below.
• FIG. 2 the winding body according to FIG. 1, partially wound with three windings, in a view of the narrow side;
• FIG. 3 shows the winding body according to FIGS. 1 and 2 in a view from above;
• Fig. 4 is a section along the line A-B in Fig. 3;
• Fig. 5 is a section along the line C-D in Fig. 3;
• Fig. 6 in a representation analogous to Fig. 1 shows a variant of the winding body in the unwound state
• FIG. 7 u. 8 the winding body according to FIG. 6 in each case in a view of the narrow side;
• FIGS. 6 to 8 shows the winding body according to FIGS. 6 to 8 in a view from above;
• Figure 10 is a section along the line A'-B 'in Fig. 9.
• FIG. 11 shows a section along the line C'-D 'in FIG. 9;
• FIG. 13 shows the winding body according to FIG. 12 in the partially wound state in a view of the narrow side
• FIG. 14 shows the winding body in the unwound state in a representation analogous to FIG. 12; Fig. 15 in a representation analogous to Fig. 13 the winding body in the unwound state.
• the winding body 1 shown in FIGS. 1 to 5 in the only partially wound state is designed as an octagonal, flat component in its outer contours and is intended for the construction of an isotropic antenna by applying three coil windings on it in such a way that the axes of these coil windings into the three directions X, Y and Z, each oriented perpendicular to one another. These spatial directions X, Y and Z are indicated in the drawings.
• the coil windings are applied to the winding body 1 in such a way that a first coil winding 2X and a second coil winding 2Y in two directions of the width and length of the winding body 1 which are perpendicular to one another and parallel to the central plane of the winding body 1
• Winding body are wound around this and the third coil winding 2Z along the narrow side of the winding body 1 is wound around its circumference following this.
• guide elements 3.1 to 3.4 and 4.1 to 4.4 are arranged, which extend beyond the circumference of the winding body and extend parallel to a central plane of the winding body and lie on both sides of the winding course of the third coil winding 2Z
• connection tabs 6.1 to 6.4 are arranged for connecting the ends of the coil windings and for connecting the component to the conductor tracks of a circuit board, not shown.
• the winding body 1 consists of plastic material and has within its outer surfaces a receiving space 5, delimited by guide surfaces 7.1, 7.2, 7.3, essentially parallel to the central plane and opening towards the top of the winding body 1, into which a ferrite core formed as a flat component is inserted from above can be. This insertion of the Ferrite core happens before the three coil windings are applied to the winding body 1.
• the receiving space 5 has the inner contour of a regular octagon. Accordingly, the ferrite core to be inserted in it has the outer shape of a regular octagon.
• the ferrite core can be fixed in the receiving space by gluing.
• 6 to 11 show a variant of the winding body according to FIGS. 1 to 5 in the unwound state.
• the main differences lie in a somewhat different design of the guide elements for the third coil winding and the connection elements to which the ends of the coil windings are connected.
• 6 to 11 the parts corresponding to the details of the winding body according to FIGS. 1 and 5 are given the same reference numerals, which are provided with an apostrophe. A detailed description of the winding body according to FIGS. 6 to 11 does not appear to be necessary.
• the receiving space opens to the underside of the winding body or to one of the narrow sides.
• the ferrite core is then pushed into the receiving space from one of the narrow sides.
• the winding body 11 is in turn designed as a flat, essentially octagonal component on which three coil windings are applied such that the axes of these coil windings 12X, 12Y, 12Z in turn point in the three spatial directions X, Y and Z, each oriented perpendicular to one another.
• the coil windings 12X, 12Y, 12Z are applied in the same way as in the embodiments described above.
• the circumference of the winding body projecting parallel to a central plane of the winding body is current and on both sides of the winding course of the third coil winding 12Z arranged guide elements, of which the guide elements 13.1 to 13.4 lying on the underside of the winding body 11 are visible in FIGS. 12 and 14, while those on the top of the winding body 11 lying guide elements only the guide elements 14.1 and 14.2 are visible in FIGS. 13 and 15.
• the guide elements on the upper side and on the lower side in turn lie opposite one another in such a way that they form receiving pockets in which the turns of the third coil winding 12Z run.
• the ends of coil windings are wound around extensions of the guide elements 13.2 and 13.4 arranged on the underside and soldered there, so that connection elements 16.2 and 16.4 are formed for connecting the component to the conductor tracks of a circuit board (not shown).
• the winding body 11 has a receiving space 15 which is delimited by guide surfaces 17 and runs essentially parallel to the central plane and opens towards a narrow side of the winding body 11, into which a ferrite core 18 designed as a flat component is inserted.
• the ferrite core 18 is inserted before the three coil windings are applied to the winding body 11.

Landscapes

• Engineering & Computer Science (AREA)
• Power Engineering (AREA)
• Microelectronics & Electronic Packaging (AREA)
• Coils Or Transformers For Communication (AREA)
• Radar Systems Or Details Thereof (AREA)
• Details Of Aerials (AREA)
• Burglar Alarm Systems (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=34706581

Family Applications (1)

Country Status (4)

Cited By (1)

Families Citing this family (6)

Family Cites Families (6)

• 2003
  • 2003-12-24 DE DE10361233A patent/DE10361233A1/de not_active Withdrawn
• 2004
  • 2004-12-17 EP EP04802950A patent/EP1634308B1/fr not_active Expired - Lifetime
  • 2004-12-17 DE DE502004002866T patent/DE502004002866D1/de not_active Expired - Lifetime
  • 2004-12-17 WO PCT/DE2004/002763 patent/WO2005062316A2/fr not_active Ceased
  • 2004-12-17 AT AT04802950T patent/ATE353469T1/de not_active IP Right Cessation

Non-Patent Citations (1)

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