EP3968102A1 - Antennenvorrichtung - Google Patents

Antennenvorrichtung Download PDF

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Publication number
EP3968102A1
EP3968102A1 EP20195194.4A EP20195194A EP3968102A1 EP 3968102 A1 EP3968102 A1 EP 3968102A1 EP 20195194 A EP20195194 A EP 20195194A EP 3968102 A1 EP3968102 A1 EP 3968102A1
Authority
EP
European Patent Office
Prior art keywords
antenna
timepiece according
timepiece
strands
antenna device
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.)
Pending
Application number
EP20195194.4A
Other languages
English (en)
French (fr)
Inventor
Thierry Scordilis
Zoran Randjelovic
Jean Gorisse
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.)
Swatch Group Research and Development SA
Original Assignee
Swatch Group Research and Development 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 Swatch Group Research and Development SA filed Critical Swatch Group Research and Development SA
Priority to EP20195194.4A priority Critical patent/EP3968102A1/de
Priority to JP2021105339A priority patent/JP7160999B2/ja
Priority to US17/376,363 priority patent/US11705621B2/en
Priority to CN202111042774.7A priority patent/CN114237026B/zh
Publication of EP3968102A1 publication Critical patent/EP3968102A1/de
Pending legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04R—RADIO-CONTROLLED TIME-PIECES
    • G04R60/00—Constructional details
    • G04R60/04—Antennas attached to or integrated in watch bracelets
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G17/00—Structural details; Housings
    • G04G17/02—Component assemblies
    • G04G17/04—Mounting of electronic components
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G21/00—Input or output devices integrated in time-pieces
    • G04G21/02—Detectors of external physical values, e.g. temperature
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G21/00—Input or output devices integrated in time-pieces
    • G04G21/04—Input or output devices integrated in time-pieces using radio waves
    • G—PHYSICS
    • G04—HOROLOGY
    • G04R—RADIO-CONTROLLED TIME-PIECES
    • G04R20/00—Setting the time according to the time information carried or implied by the radio signal
    • G04R20/02—Setting the time according to the time information carried or implied by the radio signal the radio signal being sent by a satellite, e.g. GPS
    • G—PHYSICS
    • G04—HOROLOGY
    • G04R—RADIO-CONTROLLED TIME-PIECES
    • G04R60/00—Constructional details
    • G04R60/06—Antennas attached to or integrated in clock or watch bodies
    • G—PHYSICS
    • G04—HOROLOGY
    • G04R—RADIO-CONTROLLED TIME-PIECES
    • G04R60/00—Constructional details
    • G04R60/06—Antennas attached to or integrated in clock or watch bodies
    • G04R60/10—Antennas attached to or integrated in clock or watch bodies inside cases
    • G04R60/12—Antennas attached to or integrated in clock or watch bodies inside cases inside metal cases
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/273—Adaptation for carrying or wearing by persons or animals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • H01Q1/528—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the re-radiation of a support structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • 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

Definitions

  • watches have incorporated means of communication in order to be able to connect to different communication networks, such as Bluetooth to connect to a mobile terminal, and geolocation, to connect to different satellite location systems such as GPS, Glonass or Galileo.
  • a watch incorporates one or more antennas.
  • An antenna of optimal length allows sending/receiving a signal in full and at full power.
  • an antenna In a watch, the available space being limited, an antenna must have a suitable design to fit into the middle of the watch.
  • the watch incorporates a means of radio communication that operates on radio frequencies (such as 2.4 GHz or 1.5 GHz), the size of the product becomes critical in relation to the wavelength (120 mm and 200 mm).
  • radio frequencies such as 2.4 GHz or 1.5 GHz
  • one of the aims of the invention is consequently to have an antenna device intended to be used in a communication system for a timepiece, such as a watch, which integrates at least two antenna circuits each having an optimum length to send/receive a signal in full and at full power and to be integrated into the middle of a watch, the reception volume of which is limited.
  • the invention relates to a timepiece comprising a case formed from a metal middle part in which are placed a metal dial and a remote communication system provided with a multi-band antenna device arranged above said dial, the communication system comprising a strap of said timepiece connected at its ends to said middle part and comprising a body formed from a plurality of attachment elements having different electrical conduction properties, the arrangement of said attachment elements in the body of the wristband being configured to achieve an enlargement of the radiation pattern of said antenna device.
  • top, bottom, upper, lower, and above are to be considered taking into account a horizontal median plane (P) parallel to the horizontal support plane of the case of the timepiece on a surface.
  • P horizontal median plane
  • the timepiece 4 comprises a case formed by a middle part 40 in which are arranged a metal dial and a remote communication system provided with a multi-band antenna device 1 visible on the figure 2 .
  • this timepiece 1 comprises a bracelet 49 provided with a body formed by a plurality of attachment elements 50, here links, having different electrical conduction properties and whose the arrangement in this body participates in the realization of the configuration of the widening of the radiation pattern of said antenna device 1.
  • the case of a timepiece 4 comprises a reception volume defined by a middle part 40, generally made of metallic material, forming its side wall around said central axis, made in a single part or in two parts with a bezel 41 upper, for example made of ceramic or titanium.
  • the reception volume of the timepiece 4 is closed at the top by means of a window 42, for example made of sapphire crystal, supported by the middle part 40 and fixed in a sealed manner thereto by a suitable method.
  • the timepiece also comprises a bottom wall (not visible), for example metal, located opposite its window 42 with respect to the median plane, advantageously isolated from the caseband by a seal, closing the volume of bottom reception.
  • the antenna device 1 comprises a substrate 10, advantageously made in the form of a flexible printed circuit (commonly called "flex").
  • the antenna device 1 has the particularity of comprising two separate antenna circuits, to enable the timepiece to be connected to two separate networks, more precisely a Bluetooth-type communication network and a localization network by GNSS (Geolocation and Navigation Satellite System) satellite, such as for example the GPS (Global Positioning System), Glonass or Galileo.
  • GNSS Global Positioning System
  • GPS Global Positioning System
  • Glonass Galileo.
  • An electrical connection 13 makes it possible to connect the proximal ends of the first, second and third strands 110, 11, 120.
  • This electrical connection 13 comprises a single connection point 130 on which is connected to said filter circuit 2.
  • a single connection point 130 will thus allow communication by selectively using the first and second antenna circuits 11 and 12.
  • the architecture with two strands in parallel of the first antenna circuit 11 makes it possible to widen the frequency band (100 MHz), necessary for example to communicate on a communication network of the Bluetooth type (2.4 GHz).
  • the antenna is powered on a current node and its length is folded, making it possible to improve the impedance matching.
  • the single connection point 130 for the two antenna circuits 11, 12 in parallel facilitates the mechanical integration of the antenna device into the reception volume of the timepiece 4 as well as independence of design. between the antenna part and the electronic part. In fact, it suffices to adjust the mechanical integration of the support plate of these antenna circuits in the construction, the pattern of the antenna circuits being subsequently produced by a standard engraving process which does not call into question said mechanical integration. .
  • the second antenna circuit 12 with two strands connected in series makes it possible to communicate on a narrower frequency band, for example at 1.5 GHz used to communicate on a satellite location network (GPS for example).
  • each antenna circuit 11, 12 essentially extends along an arcuate trajectory comprising two strands 110, 111, 120, 121 arranged in parallel on the substrate 10 which follow this trajectory.
  • each antenna circuit 11, 12 can be produced over an angular range of between 70 and 80° relative to the angle of the angular sector which defines the arc of a circle formed by this antenna circuit 11 , 12 and this, on either side of the central junction link. Their trajectory can follow this arc of a circle made along a radius between 16 and 22mm.
  • the two strands 110, 111, 120, 121 can be separated from each other by a distance of between 1 and 2 mm.
  • the substrate 10 is in the form of a first plate having a profile made in an arc of a circle, advantageously in a semicircle.
  • This configuration greatly helps to obtain circular polarization for satellite antennas in particular.
  • This configuration also helps for the implementation of the Bluetooth protocol, due to the propagation of the waves in closed places such as living rooms.
  • the two antenna circuits are printed on the same face of the plate, its upper face, and each extend on either side of a separation part carrying the electrical connection 13 joining the two antenna circuits 11 , 12.
  • This separation part is advantageously median, separating the substrate into two circular arcs of substantially equal or even equal or strictly equal dimensions.
  • the antenna device further comprises a connection part 100, in the form of an outgrowth of the plate.
  • connection part 100 of the substrate 10 is intended to be folded with respect to the first plate, around an axis perpendicular to the axis (X) and parallel to the plane (P).
  • connection part 100 comprises one or more conductive connections making it possible to connect the antenna circuits 11, 12 (at the level of the electrical connection 13) to an electronic control circuit 2 carrying the filter circuit 20 of the duplexer/rejector type.
  • the connection part 100 comprises electromagnetic shielding of these conductive connections to prevent any radiation to the outside and to make it possible to prevent the connection part 100 from influencing the impedance of the antenna circuits 11 and 12.
  • the shielding can be produced by an assembly of several superimposed layers: a lower layer of shielding, a layer of insulation, a layer incorporating the conductive connections, then a new layer of insulation and a new upper layer of shielding.
  • a control board carrying the electronic control circuit 2 (the control circuit 2 carrying for example one or more RF transmitter/receiver circuits and of known design) can be arranged in the bottom of the case of the timepiece 4 .
  • the antenna device 1 is connected to the control card, by the connection part 100 via the conductive connection(s).
  • the timepiece 4 can integrate a dial 43, advantageously made of metal, located above the bottom wall.
  • This dial may bear aesthetic indications visible through the glass of the timepiece. It advantageously has a disc shape.
  • the timepiece can incorporate a wedge 44 arranged on the dial.
  • This wedge 44 defines a horizontal support plane and is intended to support the substrate 10 carrying the antenna circuits.
  • This wedge can have a circular or semi-circular shape and defines a constant thickness determined above the dial.
  • the substrate 10 of the antenna device 1 is arranged to be positioned on the wedge 44, its first plate resting against the support plane formed by the wedge. Its connection part 100 is bent to position itself vertically, in a plane transverse to the mean plane (P).
  • a first wedging element 45 for example made of insulating foam, can be positioned between the substrate and the bezel surmounting the middle part.
  • a second element 46 for example made of insulating plastic, for example of semi-annular shape, comprises an upper part bearing against the upper face of the substrate 10, a vertical part extending downwards, as far as the dial and a lower part resting against the dial.
  • a touch screen 47 for example of the capacitive type, can be fixed under the glass 42, over a major part of the surface of the glass, separated from said second element 46 by air.
  • the timepiece comprises on either side of its middle part, two lugs 48 each arranged to fix a separate strand of the bracelet 49.
  • the antenna device is multi-band to operate at least two communication circuits, which have different characteristics in terms of frequencies, polarization, gain and impedance.
  • the electronic control circuit 2 may include a radiofrequency duplexer/rejector filter 20.
  • each antenna circuit 11, 12 For the gain and the polarization, it is the pattern of each antenna circuit 11, 12 which makes it possible to manage these parameters.
  • duplexer/rejector filter makes it possible to isolate the two communication circuits (Bluetooth and GPS for example).
  • a communication circuit of the Bluetooth type requires linear polarization whereas a communication circuit of the GPS type requires circular polarization.
  • the GPS system notably imposes a so-called left polarization.
  • the solution of the invention makes it possible to take account of the fact that the timepiece 4 comprises a middle part 40 made of metallic material.
  • the antenna device 1 is intended to be placed as high as possible in the case of the timepiece, that is to say as close as possible to the glass, while while remaining hidden from the eyes of the user.
  • the arrangement of the antenna device 1 in the case of the timepiece makes it possible to benefit from the caseband 40 in metal of the timepiece, through which the antenna device 1 can emit its radiation.
  • the bezel 41 which can be made of a ceramic-type material, makes it possible, so as not to damage the radiation, in particular laterally, by adding a material with a high dielectric, to enlarge the electrical length of the antenna. and thus improve its performance in relation to its physical size.
  • the antenna device 1 being placed above the dial 43 which is also metallic, there is a volume mostly filled with air (thus improving the performance of the antenna), above the antenna device.
  • This metallic dial 43 also acts as a screen, making any modification to the construction below this dial vis-à-vis the antenna device 1 transparent in part.
  • the bracelet 49 participates in carrying out the configuration of the widening of the radiation pattern of said antenna device 1.
  • the radiation takes place via the middle part 40 and this bracelet 49 plays a significant role in terms of radiation.
  • It can in fact be made partially with several links 50 of metallic material to widen the radiation pattern in the directions which would be attenuated by the wearer's wrist.
  • electrical looping between the top and bottom of the caseband (lug to lug) via the metal bracelet 49 can be avoided by integrating a non-metallic link 51 into the bracelet 49. The placement of this link is optimized to reach the expected specifications.
  • the figure 4 illustrates the performance in terms of gain, seen by each of the frequency bands, the ISM band (Industrial, Scientific and Medical - corresponding to the frequency band used by a network such as Bluetooth) and the GNSS frequency band (Geolocation and Navigation by a Satellite System), using the communication system of the invention.
  • the ISM band Industrial, Scientific and Medical - corresponding to the frequency band used by a network such as Bluetooth
  • GNSS frequency band Geolocation and Navigation by a Satellite System
  • the figure 5 represents two curves illustrating the separation of the frequency bands permitted by the use of the antenna device according to the invention. It can be seen that the ISM band is well isolated from the GNSS frequency band.
  • Such an invention thus participates in the production of a single radiating structure of the miniature multiband type which uses the properties of the materials in the vicinity (metal caseband, sapphire crystal) and in particular the bracelet with these attachment elements.
  • This integration is made possible by a separation between the physical integration (the construction) and the shape of the antenna, thanks to a printing technique (PCB flex for example).
  • This multiband structure being connected to the electronics by means of circuitry of the rejector filter type.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Electric Clocks (AREA)
  • Support Of Aerials (AREA)
EP20195194.4A 2020-09-09 2020-09-09 Antennenvorrichtung Pending EP3968102A1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP20195194.4A EP3968102A1 (de) 2020-09-09 2020-09-09 Antennenvorrichtung
JP2021105339A JP7160999B2 (ja) 2020-09-09 2021-06-25 アンテナデバイス
US17/376,363 US11705621B2 (en) 2020-09-09 2021-07-15 Antenna device
CN202111042774.7A CN114237026B (zh) 2020-09-09 2021-09-07 天线装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20195194.4A EP3968102A1 (de) 2020-09-09 2020-09-09 Antennenvorrichtung

Publications (1)

Publication Number Publication Date
EP3968102A1 true EP3968102A1 (de) 2022-03-16

Family

ID=72432800

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20195194.4A Pending EP3968102A1 (de) 2020-09-09 2020-09-09 Antennenvorrichtung

Country Status (4)

Country Link
US (1) US11705621B2 (de)
EP (1) EP3968102A1 (de)
JP (1) JP7160999B2 (de)
CN (1) CN114237026B (de)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1315052A1 (de) * 2001-11-21 2003-05-28 Asulab S.A. Struktur einer PIFA-Antenne und Abschirmgehäuse für ein elektronisches tragbares Gerät
US20180173167A1 (en) * 2016-12-20 2018-06-21 Motorola Mobility Llc Wearable Electronic Device Adapted for Supporting Wireless Communications
CN111029731A (zh) * 2019-12-30 2020-04-17 维沃移动通信有限公司 一种可穿戴设备
WO2020129352A1 (ja) * 2018-12-19 2020-06-25 株式会社ジャパンディスプレイ 電子機器

Family Cites Families (15)

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Publication number Priority date Publication date Assignee Title
DE69906973T2 (de) * 1999-10-11 2004-02-26 Asulab S.A. Antennenstruktur die ein Gehäuse bildet für elektronische Komponente eines tragbaren Gerätes
JP2005062161A (ja) * 2003-07-25 2005-03-10 Seiko Epson Corp アンテナ内蔵式電子時計
JP2010230374A (ja) * 2009-03-26 2010-10-14 Citizen Watch Co Ltd 無線機能付き時計
JP5493527B2 (ja) * 2009-07-14 2014-05-14 セイコーエプソン株式会社 無線機能付き時計
GB2477289B (en) * 2010-01-27 2014-08-13 Harris Corp A radio communication apparatus having improved resistance to common mode noise
JP2012244454A (ja) * 2011-05-20 2012-12-10 Nec Saitama Ltd アンテナ装置およびそれを搭載した電子機器
JP6331430B2 (ja) * 2014-01-31 2018-05-30 セイコーエプソン株式会社 電子時計
JP6225774B2 (ja) * 2014-03-19 2017-11-08 カシオ計算機株式会社 アンテナ装置及び電子機器
KR102300862B1 (ko) 2014-09-15 2021-09-13 삼성전자주식회사 전자 장치
US9720376B2 (en) * 2014-11-18 2017-08-01 Sony Corporation Band type electronic device and substrate arrangement method
US9912042B2 (en) * 2015-07-28 2018-03-06 Futurewei Technologies, Inc. Coupled multi-bands antennas in wearable wireless devices
CN106707729B (zh) 2017-01-11 2022-06-17 广东小天才科技有限公司 智能手表
WO2018129730A1 (zh) 2017-01-16 2018-07-19 深圳市大疆创新科技有限公司 手表及其表带
JP7230408B2 (ja) * 2018-10-02 2023-03-01 カシオ計算機株式会社 アンテナ装置及び腕時計型電子機器
EP3964898A1 (de) * 2020-09-04 2022-03-09 The Swatch Group Research and Development Ltd Antennenvorrichtung für uhr

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1315052A1 (de) * 2001-11-21 2003-05-28 Asulab S.A. Struktur einer PIFA-Antenne und Abschirmgehäuse für ein elektronisches tragbares Gerät
US20180173167A1 (en) * 2016-12-20 2018-06-21 Motorola Mobility Llc Wearable Electronic Device Adapted for Supporting Wireless Communications
WO2020129352A1 (ja) * 2018-12-19 2020-06-25 株式会社ジャパンディスプレイ 電子機器
CN111029731A (zh) * 2019-12-30 2020-04-17 维沃移动通信有限公司 一种可穿戴设备

Also Published As

Publication number Publication date
CN114237026A (zh) 2022-03-25
US20220077570A1 (en) 2022-03-10
JP2022045892A (ja) 2022-03-22
CN114237026B (zh) 2023-06-16
US11705621B2 (en) 2023-07-18
JP7160999B2 (ja) 2022-10-25

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