WO2020119367A1 - Antenne et dispositif terminal - Google Patents

Antenne et dispositif terminal Download PDF

Info

Publication number
WO2020119367A1
WO2020119367A1 PCT/CN2019/117445 CN2019117445W WO2020119367A1 WO 2020119367 A1 WO2020119367 A1 WO 2020119367A1 CN 2019117445 W CN2019117445 W CN 2019117445W WO 2020119367 A1 WO2020119367 A1 WO 2020119367A1
Authority
WO
WIPO (PCT)
Prior art keywords
patch
ground plate
antenna
hole
antenna according
Prior art date
Application number
PCT/CN2019/117445
Other languages
English (en)
Chinese (zh)
Inventor
简宪静
王义金
Original Assignee
维沃移动通信有限公司
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 维沃移动通信有限公司 filed Critical 维沃移动通信有限公司
Publication of WO2020119367A1 publication Critical patent/WO2020119367A1/fr

Links

Images

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/36Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/38Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/12Supports; Mounting means
    • H01Q1/22Supports; Mounting means by structural association with other equipment or articles
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/12Supports; Mounting means
    • H01Q1/22Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/2258Supports; Mounting means by structural association with other equipment or articles used with computer equipment
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/12Supports; Mounting means
    • H01Q1/22Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/242Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/48Earthing means; Earth screens; Counterpoises
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/50Structural association of antennas with earthing switches, lead-in devices or lightning protectors
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/10Resonant antennas
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/20Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
    • H01Q5/28Arrangements for establishing polarisation or beam width over two or more different wavebands
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/30Arrangements for providing operation on different wavebands
    • H01Q5/307Individual or coupled radiating elements, each element being fed in an unspecified way

Definitions

  • the present disclosure relates to the field of communication technology, and in particular, to an antenna and terminal equipment.
  • millimeter wave antennas are gradually introduced into terminal equipment.
  • Patch antennas are often used as millimeter wave band antennas or millimeter wave array antenna units due to their low profile, easy conformation, and high gain.
  • the bandwidth of the millimeter wave patch antenna in the related art is narrow, and it is difficult to meet the bandwidth requirements of the millimeter wave band.
  • Embodiments of the present disclosure provide an antenna and a terminal device to solve the problem of narrow bandwidth of the millimeter wave patch antenna of the terminal device.
  • an embodiment of the present disclosure provides an antenna including a first patch, a second patch, a ground plate, and a feeder; the second patch is disposed between the first patch and the ground plate Between the first patch, the second patch, and the ground plate, there is no contact between the two; the feeder is connected to the feeding point of the first patch; the second patch There is a first through hole for the feed line to pass through, the feed line does not contact the second patch; a second through hole for the feed line to pass through is provided on the ground plate, and the feed line does not Contact the ground plate; the first patch and the second patch are coupled;
  • the distance between the feeding point and the first side of the first patch is less than the distance from other sides of the first patch, the first side is one of the first patches Side.
  • an embodiment of the present disclosure also provides a terminal device, including the above antenna.
  • An antenna is characterized in that it includes a first patch, a second patch, a ground plate, and a feeder; the second patch is disposed between the first patch and the ground plate , The first patch, the second patch and the ground plate are not in contact with each other; the feeder is connected to the feeding point of the first patch; on the second patch A first through hole is provided for the feed line to pass through, the feed line does not contact the second patch; a second through hole for the feed line to pass through is formed on the ground plate, and the feed line does not contact The ground plate; the first patch and the second patch are coupled; the distance between the feed point and the first side of the first patch is smaller than that of the first patch For the distance of the side, the first side is a side of the first patch. In this way, since the first patch and the second patch exist, the antenna can cover multiple millimeter wave bands.
  • FIG. 1 is one of structural diagrams of an antenna provided by an embodiment of the present disclosure
  • FIG. 2 is a partial structural diagram of an antenna provided by an embodiment of the present disclosure
  • FIG. 3 is a second structural diagram of an antenna provided by an embodiment of the present disclosure.
  • FIG. 5 is a third structural diagram of an antenna provided by an embodiment of the present disclosure.
  • FIG. 6 is a fourth structural diagram of an antenna provided by an embodiment of the present disclosure.
  • FIG. 7 is a fifth structural diagram of an antenna provided by an embodiment of the present disclosure.
  • FIG. 8 is a second schematic diagram of simulation results provided by an embodiment of the present disclosure.
  • FIG. 9 is a sixth structural diagram of an antenna provided by an embodiment of the present disclosure.
  • FIG. 10 is a third schematic diagram of simulation results provided by an embodiment of the present disclosure.
  • FIG. 1 is a structural diagram of an antenna provided by an embodiment of the present disclosure. As shown in FIG. 1, it includes a first patch 1, a second patch 2, a ground plate 3, and a feeder 4; the second patch 2 is provided between the first patch 1 and the ground plate 3, and there is no contact between the first patch 1, the second patch 2 and the ground plate 3;
  • the feeder 4 is connected to the feeding point 5 of the first patch 1;
  • the second patch 2 is provided with a first through hole 6 through which the feeder passes, and the feeder 4 does not contact the second Patch 2;
  • the ground plate 3 is provided with a second through hole 7 for the feed line 4 to pass through, the feed line 4 does not contact the ground plate 3;
  • the first patch 1 and the second Patch 2 is coupled; the distance between the feed point 5 and the first side of the first patch 1 is less than the distance from the other sides of the first patch 1, the first side is One side of the first patch 1.
  • the antenna may be a millimeter wave antenna
  • the feeder 4 is connected to the feed 8
  • the gap between the second patch 2 and the first patch 1 may be filled with a non-conductive medium 9.
  • Both the first patch 1 and the second patch 2 are metal sheets, and the shape of the metal sheet may be square or some other shape.
  • the first patch 1 is provided with a feeding point 5, and the position of the feeding point 5 can be adjusted to cause resonance in a corresponding frequency band.
  • the feed source 8 may be electrically connected to the feed point 5 through the feed line 4, and the feed line 4 passes through the second through hole 7 and the first through hole 6. It should be noted that there is no electrical connection between the feed source 8 and the second patch 2.
  • the first patch 1 and the second patch 2 are coupled so that the antenna generates double resonance.
  • the dielectric constant of the non-conductive medium 9 is ⁇ r, and the non-conductive medium 9 may be a transparent or non-transparent material.
  • the total thickness of the antenna is H
  • the thickness between the first patch 1 and the second patch 2 is H1
  • the thickness between the second patch 2 and the ground plate 3 is H2.
  • H1 is generally 0.2mm to 0.3mm
  • H2 is generally 0.4mm to 0.5mm, so H can be 0.6mm to 0.8mm.
  • FIG. 2 is a partial structural diagram of an antenna provided by an embodiment of the present disclosure, and is a partial structural diagram at a dotted circle around the first through hole 6 in FIG. 1.
  • FIG. 3 is a structural diagram of an antenna provided by an embodiment of the present disclosure.
  • the feeder 4 passes through the first through hole 6 on the second patch 2.
  • the first patch 1 in FIG. 3 is provided with a feed point 5, and the feed source 8 may be electrically connected to the feed point 5 through the feed line 4.
  • the side above the first patch 1 is the first side, and the distance between the feeding point 5 and the first side is smaller than the distance between the feeding point 5 and the other side of the first patch 1 .
  • FIG. 4 is a schematic diagram of a simulation result provided by an embodiment of the present disclosure.
  • a resonance is generated near 28 GHz and 38 GHz, respectively, which satisfies the dual frequency requirements of the millimeter wave antenna.
  • the present disclosure adopts a stacked structure, which effectively reduces the volume of the millimeter wave antenna, and is suitable for further forming a millimeter wave antenna array.
  • the shapes of the first patch 1, the second patch 2, and the ground plate 3 are all square.
  • the shapes of the first patch 1, the second patch 2, and the ground plate 3 are all square, so that the millimeter wave antenna can have better performance.
  • the square shape there may be some other shapes, which is not limited in this embodiment.
  • the centers of the first patch 1, the second patch 2, and the ground plate 3 are on the same straight line.
  • the centers of the first patch 1, the second patch 2, and the ground plate 3 are on the same straight line, which can make the millimeter wave antenna have better performance.
  • the area of the first patch 1 is smaller than the area of the second patch 2, and the area of the second patch 2 is smaller than the area of the ground plate 3.
  • the area of the first patch 1 is smaller than the area of the second patch 2
  • the area of the second patch 2 is smaller than the area of the ground plate 3, which can make the millimeter wave antenna Good performance.
  • the number of the first through hole 6, the second through hole 7, the feeding point 5 and the feed line 4 are all one, and one feed line 4 passes through one second through hole 7 and One first through hole 6 is connected to one feeding point 5.
  • the number of the first through hole 6, the second through hole 7, the feeding point 5 and the feed line 4 are all one, and one feed line 4 passes through one second through hole 7 A first through hole 6 is connected to a feeding point 5.
  • the number of the first through hole 6, the second through hole 7, the feeding point 5 and the feed line 4 are two, and one feed line 4 passes through a second through hole 7 and One first through hole 6 is connected to one feeding point 5.
  • FIGS. 5 and 6 are structural diagrams of the antenna provided by the embodiment of the present disclosure.
  • the number of the first through hole 6, the second through hole 7, the feed point 5 and the feed line 4 are two, and one feed line 4 passes through a second through hole 7 and a first through hole 6 are connected to a feeding point 5.
  • the position of the upper feeding point 5 relative to the upper side of the first patch 1 may be the same as the position of the right feeding point 5 relative to the right side of the first patch 1.
  • the two feed points 5 can be close to their respective sides, and located in the middle of the side, so that the two feeds respectively excite two orthogonal modes, which can meet the design of dual polarization Claim.
  • the two second through-holes 7 and the two first through-holes 6 are arranged in one-to-one pairs; the two first through-holes 6 and the two feeding points 5 are arranged in one-to-one pairs.
  • the two second through-holes 7 and the two first through-holes 6 are arranged in one-to-one pairs; the two first through-holes 6 and the two feeding points 5 are arranged in one-to-one pairs, so that The feed 8 is electrically connected to the first patch 1 through a shorter path, so that the millimeter wave antenna can have better performance.
  • a first straight line determined by one of the two feeding points 5 and the midpoint of the first patch 1 passes through the midpoint of the first side of the first patch 1;
  • a second straight line determined by another feeding point 5 and the midpoint of the first patch 1 passes through the midpoint of the second side of the first patch 1;
  • the first straight line and the second The straight line is perpendicular, and the second side is a side of the first patch 1, and the first side and the second side are different.
  • a first straight line defined by one of the two feeding points 5 and the midpoint of the first patch 1 passes through the midpoint of the first side of the first patch 1 ;
  • Another feed point 5 and a second straight line determined by the midpoint of the first patch 1 passes through the midpoint of the second side of the first patch 1;
  • the first straight line and the first are perpendicular, the second side is a side of the first patch 1, and the first side is different from the second side.
  • a slit is provided in the first patch 1 or the second patch 2.
  • the first patch 1 or the second patch 2 is provided with a slit, which can make the millimeter wave antenna resonate in more frequency bands, thereby covering the fifth generation mobile communication technology (5th generation (wireless) systems, 5G) mmWave multiple frequency bands, and without additional increase in the size of the mmWave antenna, effectively expanding the bandwidth of the mmWave antenna has important engineering significance.
  • 5th generation (wireless) systems, 5G) mmWave multiple frequency bands and without additional increase in the size of the mmWave antenna, effectively expanding the bandwidth of the mmWave antenna has important engineering significance.
  • the slit 10 is in a concave shape, and the feeding point 5 is located at the notch of the concave slit 10.
  • the concave-shaped slit can be understood in this way.
  • the concave-shaped slot includes three sub-slots connected in sequence, such as a first sub-slot, a second sub-slot, and a third sub-slot.
  • the first sub slit is perpendicular to the second sub slit
  • the second sub slit is perpendicular to the third sub slit
  • the third sub slit is parallel to the first sub slit
  • the first sub slit, the second sub slit and the third sub slit together constitute the above Concave gap.
  • FIG. 7 and FIG. 9 are structural diagrams of the antenna provided by an embodiment of the present disclosure, and FIG. 8 and FIG. 10 are implemented by the present disclosure.
  • Example provides a schematic diagram of the simulation results.
  • the first patch 1 is provided with a recessed slot 10, and the feed point 5 is located at the notch of the recessed slot 10, so that the millimeter wave antenna can Three resonances are generated.
  • a resonance is generated near 26GHz, 29GHz, and 38GHz, which can cover multiple frequency bands of 5G millimeter wave, and without additional increase in the volume of the millimeter wave antenna, the bandwidth of the millimeter wave antenna is effectively expanded. It has important engineering significance.
  • the second patch 2 is provided with a concave slot 10, and the feeding point 5 is located at the notch of the concave slot 10, so that the millimeter wave antenna can produce three Resonance.
  • a resonance is generated near 28 GHz, 38 GHz, and 42 GHz, which can cover multiple frequency bands of 5G millimeter wave, and without additional increase in the volume of the millimeter wave antenna, effectively expand the bandwidth of the millimeter wave antenna. It has important engineering significance.
  • the feeding point 5 is located on the axis of symmetry of the concave slit 10.
  • the feed point 5 is located on the symmetry axis of the concave slot 10, and is closer to the side where the notch faces, so that the input impedance of the antenna is closer to 50 ohms, so that the millimeter wave
  • the antenna has better performance.
  • the gap between the first patch 1, the second patch 2 and the ground plate 3 is filled with a non-conductive medium 9.
  • the gap between the first patch 1, the second patch 2 and the ground plate 3 is filled with a non-conductive medium 9, which can make the antenna have better structural strength.
  • the antenna is a millimeter wave antenna.
  • the antenna is a millimeter wave antenna, and the millimeter wave antenna can cover multiple frequency bands of 5G millimeter waves.
  • An antenna includes a first patch 1, a second patch 2, a ground plate 3, and a feeder 4; the second patch 2 is disposed on the first patch 1 and the ground plate Between 3, the first patch 1, the second patch 2 and the ground plate 3 are not in contact with each other; the feeder 4 is connected to the feeding point of the first patch 1 5; the second patch 2 is provided with a first through hole 6 for the feeder to pass through, the feeder 4 does not contact the second patch 2; the ground plate 3 is provided with the The second through hole 7 through which the feeder 4 passes, the feeder 4 does not contact the ground plate 3; the first patch 1 and the second patch 2 are coupled; the feed point 5 is connected to the first The distance of the first side of a patch 1 is smaller than the distance from the other sides of the first patch 1, and the first side is one side of the first patch 1. In this way, since the first patch 1 and the second patch 2 exist, the antenna can cover multiple millimeter wave frequency bands.
  • An embodiment of the present disclosure also provides a terminal device, including the above antenna.
  • the terminal device may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), a personal digital assistant (personal digital assistant (PDA) for short), a mobile Internet device (Mobile Internet Device), MID) or Wearable Device (Wearable) and so on.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Computer Hardware Design (AREA)
  • General Engineering & Computer Science (AREA)
  • Waveguide Aerials (AREA)

Abstract

La présente invention concerne une antenne et un dispositif terminal, l'antenne comprenant une première plage de montage, une seconde plage de montage, une plaque de masse et une ligne d'alimentation ; la seconde plage de montage est agencée entre la première plage de montage et la plaque de masse, pas deux de la première plage de montage, de la seconde plage de montage, et la plaque de masse étant en contact ; la ligne d'alimentation est reliée à un point d'alimentation de la première plage de montage ; un premier trou traversant pour la ligne d'alimentation à passer à travers est disposé sur la seconde plage de montage, la ligne d'alimentation n'étant pas en contact avec la seconde plage de montage ; un second trou traversant pour la ligne d'alimentation à passer à travers est disposé sur la plaque de masse, la ligne d'alimentation n'étant pas en contact avec la plaque de masse ; la première plage de montage et la seconde plage de montage sont couplées ; la distance entre le point d'alimentation et un premier bord latéral de la première plage de montage est inférieure à la distance aux autres bords latéraux de la première plage de montage, le premier bord latéral étant un bord latéral de la première plage de montage.
PCT/CN2019/117445 2018-12-14 2019-11-12 Antenne et dispositif terminal WO2020119367A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201811533697.3 2018-12-14
CN201811533697.3A CN109546326A (zh) 2018-12-14 2018-12-14 一种天线及终端设备

Publications (1)

Publication Number Publication Date
WO2020119367A1 true WO2020119367A1 (fr) 2020-06-18

Family

ID=65856200

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/117445 WO2020119367A1 (fr) 2018-12-14 2019-11-12 Antenne et dispositif terminal

Country Status (2)

Country Link
CN (1) CN109546326A (fr)
WO (1) WO2020119367A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109546326A (zh) * 2018-12-14 2019-03-29 维沃移动通信有限公司 一种天线及终端设备
CN110034391A (zh) * 2019-04-26 2019-07-19 维沃移动通信有限公司 一种终端设备
CN110401020B (zh) 2019-07-24 2021-01-08 维沃移动通信有限公司 天线单元和电子设备
KR102646542B1 (ko) * 2019-07-30 2024-03-11 삼성전기주식회사 안테나 장치
WO2021059661A1 (fr) * 2019-09-27 2021-04-01 株式会社村田製作所 Module d'antenne, dispositif de communication montant celui-ci et carte de circuit imprimé
CN112751182A (zh) * 2020-12-28 2021-05-04 Oppo广东移动通信有限公司 天线组件及电子设备
CN114824766B (zh) * 2021-01-19 2023-05-26 大唐移动通信设备有限公司 一种多模式导航天线

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101355194A (zh) * 2008-09-01 2009-01-28 北京邮电大学 双波段微带天线
CN101378146A (zh) * 2007-08-30 2009-03-04 通用汽车环球科技运作公司 双频段层叠贴片天线
CN104662737A (zh) * 2012-09-21 2015-05-27 株式会社村田制作所 双极化天线
US20160126617A1 (en) * 2014-11-05 2016-05-05 Wistron Neweb Corporation Planar Dual Polarization Antenna and Complex Antenna
CN109546326A (zh) * 2018-12-14 2019-03-29 维沃移动通信有限公司 一种天线及终端设备

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101378146A (zh) * 2007-08-30 2009-03-04 通用汽车环球科技运作公司 双频段层叠贴片天线
CN101355194A (zh) * 2008-09-01 2009-01-28 北京邮电大学 双波段微带天线
CN104662737A (zh) * 2012-09-21 2015-05-27 株式会社村田制作所 双极化天线
US20160126617A1 (en) * 2014-11-05 2016-05-05 Wistron Neweb Corporation Planar Dual Polarization Antenna and Complex Antenna
CN109546326A (zh) * 2018-12-14 2019-03-29 维沃移动通信有限公司 一种天线及终端设备

Also Published As

Publication number Publication date
CN109546326A (zh) 2019-03-29

Similar Documents

Publication Publication Date Title
WO2020119367A1 (fr) Antenne et dispositif terminal
US11688953B2 (en) Terminal device
EP2887456B1 (fr) Unité d'antenne, ensemble antenne, ensemble multi-antennes et dispositif de connexion sans fil
US20210313703A1 (en) Millimeter-Wave Antenna Array Element, Array Antenna, and Communications Product
TWI473347B (zh) 平板雙極化天線
WO2020216187A1 (fr) Appareil de terminal sans fil utilisant une conception d'antenne hautement intégrée
WO2021104191A1 (fr) Unité d'antenne et dispositif électronique
WO2020052411A1 (fr) Antenne de dispositif terminal
CN111129704B (zh) 一种天线单元和电子设备
EP3852195B1 (fr) Antenne de dispositif terminal
TW201803201A (zh) 具有隔離饋體之補綴天線
US11942674B2 (en) Antenna structure and terminal device
WO2020052636A1 (fr) Appareil d'antenne et dispositif terminal
WO2020259281A1 (fr) Module d'antenne, appareil électronique et procédé de réglage de bande d'antenne pour appareil électronique
WO2020233518A1 (fr) Unité d'antenne et dispositif électronique
EP3455907B1 (fr) Antenne alimentée en c formée sur le bord d'une carte de circuit imprimé multicouche
WO2021083217A1 (fr) Unité d'antenne et dispositif électronique
WO2021103949A1 (fr) Structure d'antenne, carte de circuit imprimé dotée d'une structure d'antenne, et dispositif de communication
WO2021083222A1 (fr) Unité d'antenne et dispositif électronique
WO2021098673A1 (fr) Antenne et dispositif électronique
WO2020143665A1 (fr) Structure d'antenne et terminal de communication
TWI521796B (zh) 提升天線隔離度之射頻裝置及無線通訊裝置
WO2021083220A1 (fr) Unité d'antenne et dispositif électronique
WO2021083219A1 (fr) Unité d'antenne et dispositif électronique
WO2021083213A1 (fr) Unité d'antenne et dispositif électronique

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19894881

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19894881

Country of ref document: EP

Kind code of ref document: A1