EP3664220B1 - Zweipolige antenne und verfahren zu deren herstellung - Google Patents

Zweipolige antenne und verfahren zu deren herstellung Download PDF

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Publication number
EP3664220B1
EP3664220B1 EP19213427.8A EP19213427A EP3664220B1 EP 3664220 B1 EP3664220 B1 EP 3664220B1 EP 19213427 A EP19213427 A EP 19213427A EP 3664220 B1 EP3664220 B1 EP 3664220B1
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EP
European Patent Office
Prior art keywords
antenna
electrically conductive
circuit board
printed circuit
housing area
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.)
Active
Application number
EP19213427.8A
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English (en)
French (fr)
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EP3664220A1 (de
Inventor
Andrea Negretti
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.)
Emme Esse SpA
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Emme Esse SpA
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Publication date
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Publication of EP3664220A1 publication Critical patent/EP3664220A1/de
Application granted granted Critical
Publication of EP3664220B1 publication Critical patent/EP3664220B1/de
Active legal-status Critical Current
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Classifications

    • 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
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/40—Radiating elements coated with or embedded in protective material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/06—Details
    • H01Q9/08—Junction boxes specially adapted for supporting adjacent ends of collinear rigid elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
    • H01Q9/26—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole with folded element or elements, the folded parts being spaced apart a small fraction of operating wavelength
    • H01Q9/265—Open ring dipoles; Circular dipoles

Definitions

  • the present invention relates to the field of dipole antennas.
  • the invention relates in particular to an antenna, of the dipole type, for use in outdoor environments and a process for the manufacturing thereof.
  • antennas In the sector of antennas, in particular those of the dipole type, various types of antennas are known in relation to the particular use for which they are intended.
  • they generally comprise at least one electrically conductive element and a connection device configured to make a connection of the conductive element itself to a signal line.
  • US 2018/219588 discloses a broadcast receiving apparatus comprising a first cover with a circuit board disposed therein, a second cover coupled to the first cover and at least one dipole antenna coupled to the circuit board and including an antenna pattern arranged on an inner surface of the second cover.
  • GR 1 008 497 describes an antenna for use in outdoor environments and suitable for the reception of digital television channels, comprising a dipole consisting of a brass sheet coupled to a substrate of dielectric material.
  • the antenna allows the reception of radio/tv frequencies in the UHF region (400-846 MHz).
  • the electrically conductive elements can be made of metal alloys containing particular alloy elements adapted to provide suitable properties of resistance to corrosion and/or wear, whereas the connection elements are usually contained in appropriate box elements, that form the desired protection.
  • the conductive elements can be made of metal alloys that do not comprise elements offering the properties of resistance to atmospheric agents, with the measure of applying a coating through protective materials such as, for example, compounds with a plastic matrix.
  • protective materials such as, for example, compounds with a plastic matrix.
  • document IT 0001411117 illustrates a dipole antenna for the reception and transmission of television signals and/or data in frequency comprising a connection device - defined as a connection board - and at least one electrically conductive element connected thereto.
  • the connection board and at least one portion of the electrically conductive element are provided with a coating made of plastic material, which is formed on them through injection moulding or through the covering of resins, directly in contact with the connection board and with the electrically conductive element, so as to cover them.
  • the antenna further envisages a connection terminal for the signal line, at the output from the connection board; such terminal may be represented by a connector.
  • the amount of pressure necessary for the process of injecting plastic material, and exerted on the connection board during the moulding step can cause misalignments of the board with respect to the elements adjacent thereto or even the bending thereof.
  • the humidity generated during the moulding process can remain trapped in the interface area between the connection board and the coating performed, causing over time a deterioration of the circuits present in the board itself.
  • the process used can also lead to undesired infiltrations of plastic material at the base of connection elements of the connection board with the signal line, such as the connector at the output from the board itself, which can cause the malfunctioning of the dipole.
  • An object of the present invention is to overcome the disadvantages of the prior art.
  • an object of the present invention is to present a process for the manufacturing of an antenna of the dipole type, which allows the number of processing steps to be contained as much as possible as well as the time for performing them, at the same time maintaining a high degree of protection of the antenna with respect to external wearing agents.
  • a further object of the present invention is that of presenting a process for manufacturing antennas that is easy to plan and regulate, and reliable over time.
  • an object of the present invention is that of making an antenna of the dipole type for use in outdoor environments that has improved resistance to wear and to deterioration over time of the elements that compose it.
  • the present invention relates to a process for manufacturing antennas of the dipole type according to claim 1.
  • the invention relates to an antenna of the dipole type according to claim 5.
  • an antenna of the dipole type is created for use in outdoor environments provided with improved resistance to wear and to deterioration over time of the elements that compose it.
  • the provision of a housing area, in which to position the printed circuit board, makes the step of assembly and connection of the connection terminals for allowing the transmission of the signal easy and safe.
  • the present invention in at least one of the aforesaid aspects may have at least one of the following preferred features, taken individually or in combination with any other one of the preferred characteristics described.
  • the printed circuit board comprises a connector adapted to make a connection between said printed circuit board and a signal line.
  • the covering element comprises fixing elements configured to removably connect the covering element itself to the housing area of the coating.
  • the accessibility to the components present inside the covering element is improved, so as to allow the possible replacement thereof in the event of malfunctioning or breakdown or simply the possibility to perform periodic inspections or cleaning operations.
  • the covering element has at least one opening configured so as to allow the housing of a connector adapted to make the connection between the printed circuit board and a signal line.
  • the electrically conductive element has a substantially elongated laminar profile.
  • the antenna comprises at least two electrically conductive elements extending in a radial direction, starting from an axis of symmetry X, wherein each of said two electrically conductive elements has a substantially annular shape.
  • the axis of symmetry coincides with the axis of symmetry of the antenna.
  • the antenna comprises fixing means adapted to connect it to a respective support.
  • said fixing means comprise at least one portion formed in one-piece with the coating in plastic and/or resin.
  • an antenna 1 of the dipole type is illustrated, according to the present invention.
  • the antenna 1 can comprise one or more electrically conductive elements 2 configured to form a dipole adapted for the reception and transmission of signals in the form of electromagnetic waves.
  • Each electrically conductive element is provided with at least one end portion 3, at which there is an antenna terminal 4.
  • the antenna 1 further comprises a printed circuit board 7, which substantially comprises a support on which mutual board terminals 4' are provided which, in association with the antenna terminals 4 present on the electrically conductive elements 2, allows an electrical connection between the dipole created by the at least one electrically conductive element 2, and the printed circuit board 7.
  • the printed circuit board 7 is provided with a device for the connection to the signal line and the circuitry (not shown in the figures) necessary for the transmission of the signal from the dipole towards the signal line itself.
  • such device for the connection to the signal line is comprised of a connector 11.
  • the antenna 1 can be made according to various configurations, in particular in relation to the conformation of the at least one electrically conductive element 2, which can be designed based on the technical-functional characteristics necessary for the particular use of the antenna itself.
  • a first embodiment of the antenna 1 contemplates the use of a single electrically conductive element 2 with a folded shape according to two substantially open annular elements 8, so as to have a shaped connection portion 15 of said annular elements 8 and two free end portions 3 facing one another.
  • an antenna terminal 4 is arranged on each of the two end portions.
  • the electrically conductive element 2 preferably has a substantially elongated laminar profile, whose cross section is generally rectangular or however has a prevalent dimension with respect to the other.
  • both of the profile and the cross section of the electrically conductive element 2 are possible, which are adapted to the making of dipoles for antennas.
  • the antenna 1 also has a coating 5 which can be made of plastic and/or resin, preferably by means of an appropriate process such as, for example, thermoforming, dip coating, etc.
  • a coating 5 is made by injection moulding.
  • Such coating 5 extends along the entire longitudinal dimension of the electrically conductive element 2 leaving the antenna terminals 4 present near the end portions 3 free.
  • This provides an appropriate protection with respect to atmospheric agents in use in an outdoor environment of the electrically conductive element 2, while allowing easy access to be provided to the elements necessary for making an electrical connection.
  • Said coating 5 also has, in an own front portion, a housing area 6, in which the antenna terminals 4 are arranged, without coating, and arranged in a substantially intermediate position between the two annular elements 8.
  • Such housing area 6 is advantageously shaped so as to contain the printed circuit board 7 in a mutual support relationship, and to allow the contact between the antenna terminals 4 and the respective board terminals 4' so as to create the electrical connection between the electrically conductive element 2 and the printed circuit board 7.
  • the antenna 1 further has at least one covering element 9, which covers the printed circuit board 7 so as to provide suitable protection against external wearing agents, such as atmospheric agents, dust and/or humidity.
  • the covering element 9 can comprise fixing elements 12 configured to connect the covering element 9 itself to the housing area 6, preferably in a removably manner.
  • the simplicity of access to the components contained by the covering element 9 is increased, allowing easy maintenance and/or replacement of the components themselves.
  • such fixing elements 12 are made as a single part through moulding with the at least one covering element 9.
  • the covering element 9 preferably also has at least one opening 10 configured so as to allow the housing of a connector 11 adapted to make the connection between said printed circuit board 7 and the signal line. Said opening 10 is created on a surface of the covering 9 itself, in the position considered easiest for connecting the connector 11 to the relative terminal of the signal line.
  • such opening 9 is arranged on a front surface of the covering element 9.
  • such opening 9 is arranged on a lower surface of the covering element 9.
  • the coating 5 can advantageously comprise slots 16, made at the housing area 6, and configured so as to allow the ventilation of the interface area between the printed circuit board 7 and the housing area 6.
  • such slots 16 have an elongated shape and are arranged parallel to one another.
  • the antenna 1 further comprises a protection element 17, arranged in a rear part of the coating 5, at the housing area 6, adapted to protect the antenna terminals 4, which can be free from the coating 5 also in the rear part thereof.
  • a protection element 17 advantageously also allows protection with respect to the atmospheric agents of the area affected by the slots 16, if provided.
  • a second embodiment of the structure of the dipole of the antenna 1 contemplates providing two electrically conductive elements 2, which extend in the radial direction starting from an axis of symmetry X of the antenna.
  • the two electrically conductive elements 2 are arranged symmetrically with respect to said axis of symmetry X.
  • each electrically conductive element 2 has a closed circular annular shape and comprises an end portion 3 that extends radially towards the housing area 6.
  • the respective end portions 3 of the two electrically conductive elements 2 are arranged symmetrically with respect to the axis X and face each other mutually so as to arrange the relative antenna terminals 4 in proximity to the housing area 6.
  • the coating 5 can be made according to the same methods envisaged for the embodiments described above with reference to figures 1 to 3 .
  • a third possible embodiment of the structure of the dipole of the antenna 1 contemplates providing two electrically conductive elements 2, each of which has a closed squared annular shape, substantially rectangular.
  • one or more variants are possible including the possibility of providing appropriate slots 16 made at the housing area 6, or arranging a protection element 17, at the rear part of the coating 5.
  • the antenna 1 can comprise fixing means 13 adapted to connect the antenna to a respective support.
  • Said fixing means 13 can advantageously comprise at least one portion 14 formed in one-piece with the coating 5 in plastic and/or resin.
  • First of all one or more electrically conductive elements 2 are arranged, comprising at least one antenna terminal 4 on a corresponding own end portion 3, in a mould of an apparatus for injection moulding.
  • a coating 5 is created so as to cover the electrically conductive element(s) 2 present in the mould, leaving the antenna terminals 4 free.
  • the creation of the aforesaid coating further provides the formation of a housing area 6, preferably made in one-piece with the coating 5.
  • the coating 5 almost entirely covers the electrically conductive elements 2; further embodiments are possible which envisage the partial covering of the electrically conductive element(s) 2, based on specific needs such as, for example, the need to contain the weight and/or costs of making the antenna 1.
  • Such shaped housing area 6 is made possible by the process used, i.e. injection moulding, which allows elements with a complex shape to be made, adapting the design of the mould to the specific techniques or aesthetics desired.
  • such housing area 6 is appropriately modelled to house the printed circuit board 7 creating a seat in which it can be positioned in a mutual support relationship.
  • antenna terminals 4 left free by the coating 5 and arranged so as to be able to be coupled with the respective board terminals 4' present on the printed circuit board 7.
  • the process comprises a step in which the printed circuit board 7 is positioned in the housing area 6 so as to connect the mutual antenna terminals (4) and board terminals (4') to one another and therefore create an electrical connection between the dipole made by the conductive elements 2 and the printed circuit board 7.
  • the process comprises a further step for positioning a covering element 9 at the printed circuit board 7 and closing it onto itself by means of fixing elements 12, so as to create a coating thereof.
  • Said fixing elements 12 can be made in a single piece with the covering element 9, through moulding.
  • the fixing elements 12 are adapted to removably connect the covering element 9 to the housing area.

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  • Details Of Aerials (AREA)

Claims (11)

  1. Verfahren zur Herstellung von Dipol-Antennen (1) umfassend:
    - Bereitstellen in einer Form mindestens eines elektrisch leitenden Elements (2), das mindestens einen Antennenanschluss (4) umfasst, der an einem entsprechenden eigenen Endabschnitt (3) angeordnet ist, wobei das elektrisch leitende Element (2) derart konfiguriert ist, dass es einen Dipol bildet, der an den Empfang und die Übertragung von Signalen in Form von elektromagnetischen Wellen angepasst ist;
    - Herstellen einer Beschichtung (5) des elektrisch leitenden Elements (2) mittels eines Kunststoffmaterials und/oder Harzes, um das in der Form angeordnete elektrisch leitende Element (2) zu bedecken, wobei der mindestens eine Antennenanschluss (4) frei bleibt und einen geformten Gehäusebereich (6) bildet, in dem der mindestens eine Antennenanschluss (4) angeordnet ist, wobei der geformte Gehäusebereich (6) einstückig mit der Beschichtung (5) hergestellt wird;
    - Anordnen einer Leiterplatte (7), die mindestens einen Leiterplattenanschluss (4') umfasst, im Gehäusebereich (6);
    - elektrisches Verbinden des mindestens einen Antennenanschlusses (4) mit einem entsprechenden Leiterplattenanschluss (4');
    - Befestigen mindestens eines dem Gehäusebereich (6) entsprechenden Abdeckelements (9), um ein Volumen zu definieren, in dem die Leiterplatte (7) angeordnet ist.
  2. Verfahren nach Anspruch 1, wobei die Leiterplatte (7) einen Verbinder (11) aufweist, der dazu eingerichtet ist, eine Verbindung zwischen der Leiterplatte (7) und einer Signalleitung herzustellen.
  3. Verfahren nach Anspruch 1 oder 2, wobei die Befestigung des mindestens einen Abdeckelements (9) mittels Befestigungselementen (12) erfolgt, die derart gestaltet sind, dass sie das Abdeckelement (9) lösbar mit dem Gehäusebereich (6) verbinden.
  4. Verfahren nach einem der Ansprüche 1 bis 3, wobei die Herstellung einer Beschichtung (5), die das in der Form angeordnete elektrisch leitende Element (2) bedeckt und einen geformten Gehäusebereich (6) bildet, durch Spritzgießen erfolgt.
  5. Dipol-Antenne (1) umfassend:
    - mindestens ein elektrisch leitendes Element (2) mit mindestens einem Antennenanschluss (4), der an einem entsprechenden eigenen Endabschnitt (3) angeordnet ist, wobei das elektrisch leitende Element (2) derart konfiguriert ist, dass es einen Dipol bildet, der an den Empfang und die Übertragung von Signalen in Form von elektromagnetischen Wellen angepasst ist;
    - eine Beschichtung (5) aus Kunststoffmaterial und/oder Harz, die sich entlang einer Längsrichtung des mindestens einen elektrisch leitenden Elements (2) erstreckt und das elektrisch leitende Element (2) bedeckt, wobei sie den Antennenanschluss (4) frei lässt und einen Gehäusebereich (6) bildet, in dem der mindestens eine Antennenanschluss (4) angeordnet ist, wobei der Gehäusebereich (6) einstückig mit der Beschichtung (5) hergestellt ist;
    - eine Leiterplatte (7), die mindestens einen Leiterplattenanschluss (4') umfasst, der innerhalb des Gehäusebereichs (6) angeordnet ist, der derart geformt ist, dass er die Leiterplatte (7) in einer beiderseitigen Stützbeziehung enthält, um den Kontakt zwischen dem mindestens einen Antennenanschluss (4) und dem jeweiligen Leiterplattenanschluss (4') zu ermöglichen und eine elektrische Verbindung zwischen dem elektrisch leitenden Element (2) und der Leiterplatte (7) herzustellen;
    - mindestens ein Abdeckelement (9), das lösbar an dem Gehäusebereich (6) der Beschichtung (5) befestigt und dazu eingerichtet ist, mit dem Gehäusebereich ein Gehäusevolumen zu bilden, das die Leiterplatte (7) aufnimmt.
  6. Antenne (1) nach Anspruch 5, wobei die Leiterplatte (7) einen Verbinder (11) umfasst, der dazu eingerichtet ist, eine Verbindung zwischen der Leiterplatte (7) und einer Signalleitung herzustellen.
  7. Antenne (1) nach Anspruch 5 oder 6, wobei das Abdeckelement (9) Befestigungselemente (12) umfasst, die derart gestaltet sind, dass sie das Abdeckelement (9) lösbar mit dem Gehäusebereich (6) verbinden.
  8. Antenne (1) nach Anspruch 6 oder nach Anspruch 7, wenn dieser von Anspruch 6 abhängt, bei der das Abdeckelement (9) mindestens eine Öffnung (10) zur Aufnahme des Verbinders (11) aufweist.
  9. Antenne (1) nach einem der Ansprüche 5 bis 8, wobei das mindestens eine elektrisch leitende Element (2) ein im Wesentlichen längliches, laminares Profil aufweist.
  10. Antenne (1) nach einem der Ansprüche 5 bis 9, umfassend mindestens zwei elektrisch leitende Elemente (2), die sich in radialer Richtung ausgehend von einer Symmetrieachse X erstrecken, wobei jedes der beiden elektrisch leitenden Elemente (2) eine im Wesentlichen ringförmige Gestalt aufweist.
  11. Antenne (1) nach einem der Ansprüche 5 bis 10, umfassend Befestigungsmittel (13), die dazu eingerichtet sind, die Antenne mit einem entsprechenden Träger zu verbinden, wobei die Befestigungsmittel (13) mindestens einen Abschnitt (14) umfassen, der einstückig mit der Beschichtung (5) aus Kunststoff und/oder Harz ausgebildet ist.
EP19213427.8A 2018-12-04 2019-12-04 Zweipolige antenne und verfahren zu deren herstellung Active EP3664220B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102018000010786A IT201800010786A1 (it) 2018-12-04 2018-12-04 Antenna di tipo a dipolo e processo di produzione della stessa

Publications (2)

Publication Number Publication Date
EP3664220A1 EP3664220A1 (de) 2020-06-10
EP3664220B1 true EP3664220B1 (de) 2022-07-06

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19213427.8A Active EP3664220B1 (de) 2018-12-04 2019-12-04 Zweipolige antenne und verfahren zu deren herstellung

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EP (1) EP3664220B1 (de)
ES (1) ES2928236T3 (de)
IT (1) IT201800010786A1 (de)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB763074A (en) * 1953-11-13 1956-12-05 Shardlow Electric Wires Ltd Improvements relating to the coupling of radio acrial rod elements
US7091925B1 (en) * 2005-01-28 2006-08-15 Trans Electric Co., Ltd. Flat indoor UHF antenna device for a digital television
GR1008497B (el) * 2014-06-18 2015-05-28 Ματθαιου, Γεωργιος Στυλιανου Κεραια εξωτερικου χωρου, καταλληλη για ψηφιακα καναλια τηλεορασης
KR102583111B1 (ko) * 2017-02-02 2023-09-27 삼성전자주식회사 방송수신장치

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IT201800010786A1 (it) 2020-06-04
ES2928236T3 (es) 2022-11-16
EP3664220A1 (de) 2020-06-10

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