EP2917966A1 - Antenne tridimensionnelle - Google Patents

Antenne tridimensionnelle

Info

Publication number
EP2917966A1
EP2917966A1 EP13798246.8A EP13798246A EP2917966A1 EP 2917966 A1 EP2917966 A1 EP 2917966A1 EP 13798246 A EP13798246 A EP 13798246A EP 2917966 A1 EP2917966 A1 EP 2917966A1
Authority
EP
European Patent Office
Prior art keywords
core
antenna according
windings
platings
base
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.)
Withdrawn
Application number
EP13798246.8A
Other languages
German (de)
English (en)
Inventor
Antonio Rojas Cuevas
Juan FERNÁNDEZ REINA
Francisco Ezequiel NAVARRO PERÉZ
Maria Mar VILLARRRUBIA GARCIA
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.)
Premo SA
Original Assignee
Premo SA
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 Premo SA filed Critical Premo SA
Publication of EP2917966A1 publication Critical patent/EP2917966A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/30—Arrangements for providing operation on different wavebands
    • H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
    • H01Q5/342—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes
    • H01Q5/35—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes using two or more simultaneously fed points
    • 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
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/30—Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
    • 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
    • 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

Definitions

  • the present invention refers to a three-dimensional antenna, capable of receiving and/or transmitting signals on any of the three dimensions, in addition, the antenna has an operating capacity at both low and high frequency (Hybrid).
  • the present invention can be used in applications such as automotive because of its compatibility with Automated Optical Inspection systems, also known as AOI, and its wide range of operating frequencies.
  • a three-dimensional hybrid antenna can be found for example in Spanish Patent ES-B1 -2200652 that discloses a three dimensional antenna comprising a rectangular shaped monolithic magnetic core, with a three mutually orthogonal windings arranged so that the antenna receives a signal in each of the windings when is subjected to a low frequency electromagnetic field.
  • the embodiment disclosed in the aforementioned document ES2200652 has a core adhesively bonded to a plastic base, being said plastic base provided with terminals on its bottom side for interconnection between the windings disposed surrounding the core and external systems.
  • the devices of the prior art have problems with the robustness of their connections, in that the terminals arranged in the plastic base usually are filaments with a reduced dimension. Moreover, the junction between the base and the core must necessarily be made by adhesives that must support a wide range of temperatures. Furthermore, these connections are usually in non-visible areas, so an optical inspection can not determine whether the connections are correct. In current devices, such inspections require more sophisticated measurements than visual inspection, consequently, this operation slow down the production process.
  • the EP1489683 document discloses a three-dimensional antenna which, according to one of the embodiments described, has a monolithic core around which windings are wound, said core being provided with metal terminal plates attached, which are used as connectors with the base, the ends of the windings are welded on this metal terminal plates to assure a secure electrical connection.
  • the connectors should be first produced from a metal plate and then attached to the core in a not specified manner. This construction is expensive and requires accurate assembly processes due to the small size of the antenna; there is also the possibility that these connectors are accidentally detached from the core, producing an antenna failure.
  • the proposed arrangements in the prior art lack the flexibility to add new antennas (or derivatives of existing antennas) in that they require the manufacture of a new base, or in the best case, the required peel adhesive that bonds the core to the base to access the terminal connections.
  • the antennas disclosed in the prior art operate only at low frequency and current industrial applications require that such antennas may also operate at higher frequencies while maintaining or reducing its current volume.
  • the present invention provides a three-dimensional antenna that operates over a wide frequency range (between 5 KHz and 30 MHz), which has a higher connections strength and that is compatible with automated optical inspection systems (AOI).
  • AOI automated optical inspection systems
  • the present invention relates to a three-dimensional antenna comprising:
  • the base is a printed circuit board comprising a plurality of first platings or metallizations connected to the windings, said first platings extended through the top of the printed circuit board, and said at least one core comprises a second platings which are connected to the windings and to said base first platings.
  • first platings also cover side sections of the base.
  • the aforementioned at least one core is concerned, according to a first embodiment, to a single monolithic core, around which the three windings are wound about three core orthogonal axes.
  • a second alternative embodiment includes three independent cores, each with an axis around which a winding is wound, said three cores are fixed on the base so that said axes of said three cores remain mutually orthogonal.
  • core as used in this description refers to this monolithic core or to this set of three cores indistinctly.
  • plating or metallization refers to additions or extensions of electrically conductive metal layer on the core or base.
  • the bond between the core and the second platings is performed by the core manufacturing process itself, by chemical bath and subsequent processes of sintering, the remaining connections between the windings and the platings are made by welding, achieving overall a greater strength of the connections.
  • the base is a printed circuit board comprising a plurality of platings connected to the windings through the second platings, said first platings may extend to partially cover the sides of the printed circuit board, to provide electrical connections through lateral contact.
  • the core is a ferrite core, more specifically the core may be a ferrite core comprising a Nickel-Zinc alloy, a Manganese-Zinc alloy, or amorphous Cobalt.
  • This core composition provide ferromagnetic qualities necessary for its operation, while high
  • electrical resistivity preferably equal to or greater than 10 Dm, which allows its surface second platings to be electrically isolated with respect to each other .
  • the aforesaid orthogonal windings are configured for operation at low frequencies (approximately between 300KHz and 5KHz) and further provides at least one winding with a smaller number of turns in such a way which provides a high frequency operation (approximately between 3MHz and 30MHz). Since the directivity at high frequencies is not so critical to the operation of the antennas, it can be used a single high frequencies winding, which can be added to the aforementioned windings to provide an antenna operation in two or three dimensions.
  • the high frequency winding may be a branch from an intermediate point of one low frequency winding. Additionally, branches can be provided in the three low frequency windings to obtain a three-dimensional antenna also at high frequencies without increasing the volume of the device.
  • the high frequency winding can be printed and/or embedded in the printed circuit board.
  • the over-mold can be vacuum molded.
  • a preferred material for said over-mold is a polymer material comprising a high thermal performance plastic, capable of withstanding the high temperatures reached during operation and assembly without burning.
  • Figure 1 shows a perspective view of an antenna according to a first embodiment of the present invention
  • Figure 2 shows a perspective view an exploded view according to a first embodiment of the antenna of Figure 1 ;
  • Figure 3 shows a perspective view of an exploded view of a core, a first and second windings and a base for an antenna according to a first embodiment of the present invention
  • Figure 4 shows a perspective view of a monolithic core according to a first embodiment of the present invention
  • Figure 5 shows a perspective view of a core, a first and second windings and a base for an antenna according to a first embodiment of the present invention
  • Figure 6 shows a perspective view of a core, a first and second windings and a base for an antenna, and a third winding, corresponding with the Z axis, in an exploded position, according to a first embodiment of the present invention
  • Figure 7 shows a perspective view of an antenna according to a second embodiment of the present invention.
  • Figure 8 shows a perspective view an exploded view according to a second embodiment of the present invention.
  • Figure 9 shows a perspective view of a core with a horizontal axis around which a winding is wound, according to a second embodiment of the present invention.
  • Figure 10 shows a perspective view from the bottom side of a circular core with a vertical axis around which a winding is wound, according to a second embodiment of the present invention.
  • Figure 1 shows an antenna 1 comprising a covering 60 and a printed circuit board 30 (also known as PCB) being the internal components of the antenna embedded in that covering 60.
  • the covering 60 may be a pre-molded cover, or an over-molded or vacuum molded cover, directly molded on the components arranged on the printed circuit board 30.
  • Figures 2 and 3 show an exploded view of the antenna 1.
  • the antenna 1 comprising a base, a monolithic core 10, and three windings 21 , 22 and 23 wound around three orthogonal axes of said monolithic core 10.
  • the cited covering 60 encapsulates said core 10 and said windings 21 , 22 and 23, being this encapsulating material preferably a plastic polymer with high thermal stability and low contraction coefficient, able to resist the high temperatures achieved during the antenna 1 operation.
  • the core of this embodiment is a monolithic core and its shape has four corner blocks .13, two side arms 12 and a flat body 11.
  • the flat body 11 around which the first winding 21 is wound, has a lower thickness than the side arms 12, allowing the second winding 22 to be wound around said two lateral arms 12 perpendicular to the said first winding 21 without contacting with said first winding 21.
  • the four corner blocks 13 act as retaining elements for the first and second windings 21 and 22, and allow wounding the third winding 23 without contact with the other two windings 21 and 22.
  • the core 10 has integrally four electrically conductive second platings 50 at its corner lower surface, these four second platings 50 are each connected by welding to one initial section or end of the first and second windings 21 and 22, providing a single piece including core 10, first and second windings 21 and 22 and electric connectors without loose wires.
  • the base is a printed circuit board or PCB 30, and includes between six to twelve electrically conductive first platings 40.
  • the PCB 3 comprises six electrically conductive first platings 40 in the PCB 3 upper surface, four of them configured and arranged to be electrically connected with the second platings 50 of the core 10 by contact and welding, and the others configured to be electrically connected with the third winding 23 welding their ends on it. This third winding 23 is overlapped to the core 10 after welding the core 10 to the PCB 30 (Fig. 6).
  • some of the first platings 40 has a upper portions 41 disposed on the upper face of the PCB 30 in a position coincident with the mounting position of second platings 50 of the core 10, and a side portions 42 which extends through the side faces the PCB 30, and being connected to the upper portions 41 through a printed circuit 43.
  • This configuration allows easy and strong electrical connection between the three windings 21 , 22 and 23 and side portions 42 of the first platings 40, disposed on the side surfaces of the PCB 30, through the second platings 50, allowing an easy connection to other systems, which eliminates the need for terminals connection which usually is a no automatized process.
  • this antenna 1 when this antenna 1 is incorporated into another system the electric connections with this system are not hidden under the bottom of the PSB 30, as in the known state of the art, thanks to this side portions 42 of the first platings 40 these electrical connections may be lateral, and may be visible and checked by an automatic optical inspection (AOI) to determine a proper welding.
  • AOI automatic optical inspection
  • the aforesaid windings 21 , 22 and 23 are configured for operation at low frequencies (approximately between 300KHz and 5KHz) and further provides at least one winding with a smaller number of turns in such a way which provides a high frequency operation (approximatel between 3MHz and 30MHz). Since the directivity at high frequencies is not so critical to the operation of the antennas, it can be used a single high frequencies winding, which can be added to the aforementioned windings 21 , 22 and 23 to provide a antenna 1 operation in two or three dimensions.
  • the high frequency winding may be a branch from an intermediate point of one low frequency winding 21 , 22 and/or 23. Additionally, branches can be provided in the three low frequency windings 21 , 22 and 23 to obtain a three-dimensional antenna 1 also at high frequencies without increasing the volume of the device.
  • the high frequency winding can be printed and/or embedded in the printed circuit board 30.
  • the PCB 30 may have additional side portions 42 of the first platings 40 along its lateral sides, connected with the aforesaid high frequency winding or windings, allowing his connection with a system in the same way as the first, second and third winding 21 , 22 and 23.
  • the core 10 is usually a ferrite core, ferrite core having an electrical resistivity equal to or greater than 10 Qm.
  • a core made of Ni-Zn alloy, or Mn-Zn other embodiments may incorporate a core made of amorphous cobalt, or a combination of this elements.
  • the windings 21 , 22 and 23 are preferably of a diameter between 0.01 mm and 1 mm and can be preferably enameled copper wire with polyurethane and/or polyamide with a heat index exceeding 150°C.
  • Second platings 50 are formed onto the core 10, preferably by chemical baths and are preferably made of Sn100 tin to facilitate its soldering to the PCB 30.
  • the third winding 23 is superposed to the core 10, as shown in Figure 6, and is fixed on the PCB 30 by four bonding adhesives points 70, and said third winding 23 is electrically connected to the first platings 40 by welding.
  • Figure 5 shows the assembly of the core 10 with the first and second windings 21 and 22 disposed on the PCB 30.
  • Figure 7 shows a full view of the assembled antenna 1
  • Figure 8 an exploded view of the antenna 1 , showing the base integrating the core 10 and the windings 21 , 22 and 23, the covering 60, and an optional cushioning material 61.
  • this alternative embodiment includes three independent cores 10a, 10b and 10c, each with an axis around which a winding 21 , 22 or 23 is wound, said three cores 10a, 10b and 10c are fixed on the PCB 30 so that said axes of said three cores 10a, 10b and 10c remain mutually orthogonal working together as a single monolithic core 10.
  • Figure 9 shows a core 10a or 10b with a horizontal axis corresponding to the axis "X" or "Y”
  • Figure 10 shows a lower view of a core 10c with a vertical axis "Z”.
  • the winding 21 , 22 and 23 initial section and ends are electrically connected by welding with these second platings 50, securing its correct electrical connection.
  • the base of this embodiment is equivalent to that of the previous embodiment, and also has the first platings 40, which has a upper portions 41 disposed on the upper face of the PCB 30 in a position coincident with the mounting position of second platings 50 of the cores 10a, 10b and 10b, and a side portions 42 which extends through the side faces of the PCB 30, and being connected to the upper portions 41 through a printed circuit 43, as shown in Figure 8.
  • These first platings 40 can also be printed.

Landscapes

  • Details Of Aerials (AREA)
  • Support Of Aerials (AREA)

Abstract

L'invention concerne une antenne tridimensionnelle qui comporte : au moins un noyau (10), trois enroulements (21, 22, 23) disposés autour de trois axes orthogonaux dudit noyau, dont un au moins doit exister, et une base, dont le noyau présente des seconds revêtements métalliques (50) formés sur ses faces inférieures et reliés auxdits enroulements, ledit noyau étant disposé sur la partie supérieure de la base, ladite base étant une carte à circuit imprimé (30) comportant une série de revêtements métalliques, des parties supérieures (41) étant disposées sur la face supérieure de la carte PCB (30), et des parties latérales (42), qui s'étendent à travers les faces latérales de la carte PCB, étant reliées aux parties supérieures par l'intermédiaire d'un circuit imprimé (43). L'invention concerne une antenne tridimensionnelle qui fonctionne sur une large plage de fréquence. Cette antenne présente une force supérieure pour les connexions et est compatible avec plusieurs systèmes automatisés d'inspection optique.
EP13798246.8A 2012-11-12 2013-11-11 Antenne tridimensionnelle Withdrawn EP2917966A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ES201231728A ES2460368B1 (es) 2012-11-12 2012-11-12 Antena tridimensional
ES201231729A ES2459892B1 (es) 2012-11-12 2012-11-12 Antena tridimensional
PCT/EP2013/003396 WO2014072075A1 (fr) 2012-11-12 2013-11-11 Antenne tridimensionnelle

Publications (1)

Publication Number Publication Date
EP2917966A1 true EP2917966A1 (fr) 2015-09-16

Family

ID=49679471

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13798246.8A Withdrawn EP2917966A1 (fr) 2012-11-12 2013-11-11 Antenne tridimensionnelle

Country Status (3)

Country Link
EP (1) EP2917966A1 (fr)
ES (2) ES2459892B1 (fr)
WO (1) WO2014072075A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015104993A1 (de) 2015-03-31 2016-10-06 Epcos Ag Antennenbauelement
JP6451470B2 (ja) * 2015-04-10 2019-01-16 株式会社村田製作所 ３軸アンテナコイル
ES2716882T3 (es) * 2015-11-04 2019-06-17 Premo Sa Dispositivo de antena para operaciones de HF y LF
WO2018211548A1 (fr) * 2017-05-15 2018-11-22 Ｓｍｋ－Ｌｏｇｏｍｏｔｉｏｎ株式会社 Dispositif d'antenne
ES2880088T3 (es) 2017-07-18 2021-11-23 Premo Sa Antena de tres ejes con factor de calidad mejorado
ES2913661T3 (es) 2017-11-29 2022-06-03 Premo Sa Antena de baja frecuencia triaxial de perfil ultra bajo para integración en un teléfono móvil y teléfono móvil con la misma
EP3731245A1 (fr) 2019-04-24 2020-10-28 Premo, S.A. Antenne basse fréquence à profil ultra bas
ES2982188T3 (es) 2020-01-23 2024-10-15 Premo Sl Antena universal tridimensional multibanda
WO2023012060A1 (fr) 2021-08-03 2023-02-09 Premo, Sa Composant inductif bobiné pour montage en surface sur des cartes de circuits imprimés

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JP4218044B2 (ja) * 1999-11-25 2009-02-04 株式会社エフ・イー・シー ３次元アンテナ
ES2200652B1 (es) 2001-11-07 2005-05-01 Predan S.A. Antena monolitica con sensibilidad en los tres ejes para aplicaciones en transpondedores para automocion.
CN1623251A (zh) * 2002-03-05 2005-06-01 日商·胜美达股份有限公司 天线线圈
JP2004134957A (ja) * 2002-10-09 2004-04-30 Matsushita Electric Ind Co Ltd 面実装アンテナとこれを用いた面実装アンテナ装置
JP4458780B2 (ja) * 2003-07-11 2010-04-28 シチズン電子株式会社 電波時計用のアンテナ装置
JP2005124013A (ja) * 2003-10-20 2005-05-12 Toko Inc ３軸アンテナコイル
DE10351119A1 (de) * 2003-11-03 2005-06-02 Neosid Pemetzrieder Gmbh & Co Kg Induktives Miniatur-Bauelement, insbesondere Antenne
EP2293384B1 (fr) * 2006-04-07 2013-07-10 Sumida Corporation Bobine d'antenne
US8043522B2 (en) * 2007-08-31 2011-10-25 Hitachi Metals, Ltd. Ferrite material and method for producing ferrite material
CN201789061U (zh) * 2010-08-04 2011-04-06 普莱默电子(无锡)有限公司 应用于无钥匙进入系统的增强型3d天线
CN201789056U (zh) * 2010-08-04 2011-04-06 普莱默电子(无锡)有限公司 应用于汽车防盗器和无钥匙进入系统的z轴天线

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Also Published As

Publication number Publication date
ES2460368B1 (es) 2015-03-10
WO2014072075A4 (fr) 2014-08-07
ES2459892B1 (es) 2015-03-10
ES2460368A1 (es) 2014-05-13
ES2459892A1 (es) 2014-05-12
WO2014072075A1 (fr) 2014-05-15

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