WO2021082807A1 - Antenne - Google Patents

Antenne Download PDF

Info

Publication number
WO2021082807A1
WO2021082807A1 PCT/CN2020/116582 CN2020116582W WO2021082807A1 WO 2021082807 A1 WO2021082807 A1 WO 2021082807A1 CN 2020116582 W CN2020116582 W CN 2020116582W WO 2021082807 A1 WO2021082807 A1 WO 2021082807A1
Authority
WO
WIPO (PCT)
Prior art keywords
arm
radiating
ground
antenna
vibrator
Prior art date
Application number
PCT/CN2020/116582
Other languages
English (en)
Chinese (zh)
Inventor
谭杰洪
Original Assignee
深圳市道通智能航空技术股份有限公司
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 深圳市道通智能航空技术股份有限公司 filed Critical 深圳市道通智能航空技术股份有限公司
Publication of WO2021082807A1 publication Critical patent/WO2021082807A1/fr

Links

Images

Classifications

    • 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
    • H01Q1/48—Earthing means; Earth screens; Counterpoises
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
    • 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
    • H01Q5/10—Resonant antennas
    • 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
    • H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
    • 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
    • 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
    • H01Q5/50—Feeding or matching arrangements for broad-band or multi-band operation

Definitions

  • the present invention relates to the field of communication, in particular to an antenna.
  • Miniaturization requires antennas to reduce their size to adapt to the continuous increase in the integration of communication equipment and the increasing volume.
  • the size of the existing microstrip antennas is relatively long.
  • the length of the antenna is limited, the use of the antenna is affected to a certain extent, and the two microstrip antennas of the antenna are fed simultaneously on the front and back of the substrate with two feeding coaxial lines. , Which makes the feed structure of the antenna complicated, and the feed network needs at least two ports to be connected to the antenna in the application.
  • the purpose of the present invention is to provide an antenna.
  • the present invention provides an antenna including a first radiating part, a second radiating part, and a coaxial line, the coaxial line including an inner wire and an outer wire insulated from the inner wire;
  • the first radiating part includes a feeding arm and a first radiating arm connected to the feeding arm, the feeding arm is provided with a feeding point, and the inner wire passes through the feeding point and the feeding point.
  • the second radiating part includes a ground arm, a second radiating arm, and a third radiating arm.
  • the ground arm and the feeding arm are spaced apart, and the second radiating arm and the third radiating arm are respectively connected to the Both ends of the ground arm are connected and extend toward the side away from the feed arm; the ground arm is provided with a ground point, and the outer wire is electrically connected to the ground arm through the ground point.
  • the first radiating arm includes a first vibrator arm, a second vibrator arm, and a device that is arranged between the first vibrator arm and the second vibrator arm and is away from the feed arm away from the ground arm.
  • An impedance transformation feeder belt connected at one end, a multi-section bent microstrip line connected to the impedance transformation feeder belt, and a first connecting arm connected to the microstrip line; the first vibrator arm and the first The two vibrator arms are respectively connected to the two ends of the feeding arm and both extend toward the side away from the ground arm.
  • the first dipole arm and the second dipole arm are arranged symmetrically with respect to the central axis of the antenna, and the central axis of the antenna is a straight line between the midpoint of the feed arm and the midpoint of the ground arm. .
  • the first radiating arm further includes a first reverse loading line and a second reverse loading line, the first reverse loading line and the second reverse loading line are respectively connected to the first connecting arm The two ends of the are connected and both extend toward one side of the feed arm, the end of the first reverse loading line and the end of the first vibrator arm are spaced apart, and the second reverse loading line The end is spaced apart from the end of the second vibrator arm.
  • the first reverse loading line and the second reverse loading line are symmetrically arranged with respect to the central axis of the antenna, and the central axis of the antenna is the midpoint of the feed arm and the midpoint of the ground arm. The line where the point lies.
  • the impedance conversion feed strip is rectangular, trapezoidal or elliptical.
  • the second radiating arm includes a third vibrator arm, a fourth vibrator arm, and a fifth vibrator arm, and the third vibrator arm and the fourth vibrator arm are spaced apart and both face away from the feeder.
  • One side of the arm extends, one end of the third vibrator arm and the fourth vibrator arm are both connected to the ground arm, and the fifth vibrator arm is bent from the other end of the third vibrator arm. Extending toward one side of the ground arm, one end of the fifth vibrator arm and the other end of the fourth vibrator arm are spaced apart.
  • the third radiating arm includes a sixth dipole arm, a seventh dipole arm, and an eighth dipole arm, and the sixth dipole arm and the seventh dipole arm are spaced apart and both face away from the feed arm.
  • the sixth vibrator arm and the seventh vibrator arm Extending on one side, one end of the sixth vibrator arm and the seventh vibrator arm are both connected to the ground arm, and the eighth vibrator arm is bent from the other end of the sixth vibrator arm and faces the ground One side of the arm extends, and one end of the eighth vibrator arm and the other end of the seventh vibrator arm are spaced apart.
  • the second radiating arm and the third radiating arm are symmetrically arranged with respect to the central axis of the antenna, and the central axis of the antenna is a straight line between the midpoint of the feed arm and the midpoint of the ground arm. .
  • the antenna further includes a substrate, and the first radiating portion and the second radiating portion are both provided on the substrate.
  • the first radiating part and the second radiating part are arranged on the same side of the substrate.
  • the coaxial line is provided between the second radiating arm and the third radiating arm.
  • the substrate is a PCB board, a metal board or an FPC board.
  • the radiation frequency band of the antenna includes 900MHz ⁇ 940MHz and 2.35GHz ⁇ 2.55GHz.
  • the present invention has the beneficial effect of providing a feed point connected to the inner conductor of the coaxial line on the first radiating part, and providing a feed point connected to the outer conductor of the coaxial line on the second radiating part.
  • Grounding point, the second radiating part includes a second radiating arm and a third radiating arm respectively connected to both ends of the grounding arm and extending toward the side away from the feeding arm, so that the second radiating arm and the third radiating arm are
  • An air-permeable structure is formed between the antennas, so that the antenna is less affected by the feed cable, the required standing wave bandwidth is achieved within the limited length of the antenna, the antenna size is reduced, and the structure is simple.
  • FIG. 1 is a schematic diagram of an antenna provided by an embodiment of the present invention
  • FIG. 2 is a schematic diagram of assembly of the first radiating part and the second radiating part of the antenna provided by the first embodiment of the present invention
  • FIG. 3 is a schematic diagram of assembly of the first radiating part and the second radiating part of the antenna provided by the second embodiment of the present invention
  • FIG. 4 is a schematic diagram of assembling the first radiating part and the second radiating part of the antenna provided by the third embodiment of the present invention.
  • FIG. 5 is a diagram of S parameters of an antenna provided by an embodiment of the present invention.
  • Fig. 6 is a 900 MHz directivity diagram of an antenna provided by an embodiment of the present invention.
  • FIG. 7 is a directional diagram of an antenna provided by an embodiment of the present invention at 2.45 GHz;
  • antenna 1. first radiating part; 11, feeding arm; 12, first radiating arm; 121, first dipole arm; 122, second dipole arm; 123, impedance transformation feeder belt; 124 , Microstrip line; 1241, U-shaped bending part; 125, first connecting arm; 126, first reverse loading line; 127, second reverse loading line; 13, feeding point; 2.
  • the antenna 10 provided by the embodiment of the present invention includes a first radiating portion 1, a second radiating portion 2, and a coaxial line 3.
  • the coaxial line 3 includes an inner wire 31 and an outer wire insulated from the inner wire 31.
  • the first radiating portion 1 includes a feeding arm 11 and a first radiating arm 12 connected to the feeding arm 11.
  • a feeding point 13 is provided on the feeding arm 11, and the inner wire 31 passes through the feeding point 13 and the feeding
  • the arm 11 is electrically connected to feed the first radiating arm 12;
  • the second radiating portion 2 includes a ground arm 21, a second radiating arm 22, and a third radiating arm 23.
  • the ground arm 21 is spaced from the feeding arm 11, and the ground arm 21 There is a grounding point 24, and the outer wire 32 is electrically connected to the grounding arm 21 through the grounding point 24; the second radiating arm 22 and the third radiating arm 23 are respectively connected to both ends of the grounding arm 21 and both face away from the feeding arm 11 Extend on one side to form a transparent structure between the second radiating arm 22 and the third radiating arm 23, so that the antenna 10 is less affected by the feed cable, achieving the required standing wave bandwidth within the limited length of the antenna 10, and reducing the antenna
  • the size is simple and the structure is simple.
  • the first radiating arm 12 includes a first dipole arm 121, a second dipole arm 122, and is arranged between the first dipole arm 121 and the second dipole arm 122.
  • the impedance conversion feeder belt 123 connected to the end of the feeder arm 11 away from the ground arm 21, the multi-section bent microstrip line 124 connected to the impedance conversion feeder belt 123, and the first connecting arm 125 connected to the microstrip line 124 ;
  • the first vibrator arm 121 and the second vibrator arm 122 are respectively connected to both ends of the feeding arm 11 and both extend toward the side away from the ground arm 21.
  • the shape of the impedance conversion feeding strip 123 is rectangular, and the cross-sectional width of the impedance conversion feeding strip 123 is larger than the width of the microstrip line 124.
  • the microstrip line 124 includes four U-shaped bending portions 1241 arranged periodically.
  • the feed point 13 is set at the midpoint of the feed arm 11
  • the ground point 24 is set at the midpoint of the ground arm 21
  • the first dipole arm 121 and the second dipole arm 122 are relative to the central axis of the antenna ( (Not shown in the figure) symmetrically arranged, the central axis of the antenna is a straight line between the midpoint of the feed arm 11 and the midpoint of the ground arm 21.
  • the antenna provided by the second embodiment of the present invention differs from the first embodiment in that the first radiating arm 12 also includes a first reverse loading line 126 and a second reverse loading line 127.
  • a reverse loading line 126 and a second reverse loading line 127 are respectively connected to both ends of the first connecting arm 125 and both extend toward one side of the feeding arm 11.
  • the first reverse loading line 126 and the first vibrator arm 121 Being on the same straight line, the second reverse loading line 127 and the second vibrator arm 122 are on the same straight line.
  • the end of the first reverse loading line 126 and the end of the first vibrator arm 121 are spaced apart, and the end of the second reverse loading line 127 and the end of the second vibrator arm 122 are spaced apart.
  • the first reverse loading line 126 and the second reverse loading line 127 are symmetrically arranged with respect to the central axis of the antenna, and the central axis of the antenna 10 is the midpoint of the feed arm 11 and the midpoint of the ground arm 21 The straight line.
  • the first dipole arm 121 and the second dipole arm 122 are high-frequency radiation arms, and the length of the first dipole arm 121 and the second dipole arm 122 is 1/8 to 3/4 of the high-frequency resonance wavelength.
  • the impedance transformation feeder belt 123, the microstrip line 124, the first reverse load line 126 and the second reverse load line 127 are low-frequency radiation arms, the impedance transformation feeder belt 123, the microstrip line 124, the first reverse load line
  • the total length of 126 and the second reverse loading line 127 is 1/8 to 3/4 of the low-frequency resonance wavelength.
  • the low-frequency radiation frequency band of the antenna 10 is 900 MHz ⁇ 940 MHz
  • the high-frequency radiation frequency band of the antenna 10 is 2.35 GHz ⁇ 2.55 GHz.
  • the antenna provided by the third embodiment of the present invention differs from the second embodiment in that the impedance conversion feed band 123 is trapezoidal. It should be noted that, in other embodiments, the impedance conversion feed strip 123 may also be elliptical.
  • the second radiating arm 22 includes a third dipole arm 221, a fourth dipole arm 222, and a fifth dipole arm 223.
  • the third dipole arm 221 and the fourth dipole arm 222 are spaced apart and all face Extending on the side away from the feeding arm 11, one end of the third vibrator arm 221 and the fourth vibrator arm 222 are both connected to the ground arm 21, and the fifth vibrator arm 223 is bent from the other end of the third vibrator arm 221 and faces One side of the ground arm 21 extends, and one end of the fifth vibrator arm 223 and the other end of the fourth vibrator arm 222 are spaced apart.
  • the fifth pendulum arm 223 includes a first extension arm 2231 and a second extension arm 2232.
  • the first extension arm 2231 is connected between the second extension arm 2232 and the third pendulum arm 221, and the second extension arm 2232 faces the ground arm 21. Extending on one side, the fourth vibrator arm 222 and the second extension arm 2232 are on the same straight line.
  • the third radiating arm 23 includes a sixth dipole arm 231, a seventh dipole arm 232, and an eighth dipole arm 233.
  • the sixth dipole arm 231 and the seventh dipole arm 232 are spaced apart and extend toward the side away from the feed arm 11, One ends of the sixth vibrator arm 231 and the seventh vibrator arm 232 are both connected to the ground arm 21, and the eighth vibrator arm 233 is bent from the other end of the sixth vibrator arm 231 and extends toward one side of the ground arm 21.
  • One end of 233 and the other end of the seventh vibrator arm 232 are spaced apart.
  • the eighth pendulum arm 233 includes a third extension arm 2331 and a fourth extension arm 2332.
  • the third extension arm 2331 is connected between the fourth extension arm 2332 and the sixth pendulum arm 231, and the fourth extension arm 2332 faces one side of the ground arm 21.
  • Side extension, the seventh vibrator arm 232 and the fourth extension arm 2332 are on the same straight line.
  • the second radiating arm 22 and the third radiating arm 23 are symmetrically arranged with respect to the central axis of the antenna 10, and the central axis of the antenna 10 is a straight line between the midpoint of the feed arm 11 and the midpoint of the ground arm 21.
  • the fourth oscillator arm 222 and the seventh oscillator arm 232 are high frequency oscillator arms, and the length of the fourth oscillator arm 222 and the seventh oscillator arm 232 is 1/8 to 3/4 of the high frequency resonance wavelength.
  • the third oscillator arm 221, the second extension arm 2232, the sixth oscillator arm 231, and the fourth extension arm 2332 are low-frequency radiation arms.
  • the total length of the third oscillator arm 221 and the second extension arm 2232 is 1 of the low-frequency resonance wavelength. /8 to 3/4; the total length of the sixth vibrator arm 231 and the fourth extension arm 2332 is 1/8 to 3/4 of the low-frequency resonance wavelength.
  • the antenna further includes a substrate 4, the first radiating part 1 and the second radiating part 2 are both provided on the substrate 4, and the substrate 4 is a PCB board, a metal board or an FPC board.
  • the first radiating part 1 and the second radiating part 2 are arranged on the same side of the substrate 4, and the coaxial line 3 is arranged between the second radiating arm 22 and the third radiating arm 23.
  • Fig. 5 is a diagram of S parameters of the antenna provided by an embodiment of the present invention. It can be seen from the diagram that the antenna 10 can work at 900MHz ⁇ 940MHz and 2.35GHz ⁇ 2.55GHz, with bandwidths of 40MHz (4.3%) and 200MHz (8.0%), respectively. Coverage of commonly used 900MHz and 2.45GHz frequency bands.
  • Figure 6 is a 900MHz pattern of the antenna provided by an embodiment of the present invention.
  • Figure 7 is a pattern of the antenna provided by an embodiment of the present invention at 2.45GHz. It can be seen from the figure that the antenna 10 can achieve omnidirectional coverage at both 900MHz and 2.45GHz. And the maximum antenna radiation direction is in the horizontal direction.
  • the first radiating portion 1 of the antenna 10 is provided with a feeding point 13 connected to the inner wire 31 of the coaxial line 3, and the second radiating portion 2 is provided with the coaxial line 3.
  • the second radiating portion 2 includes a second radiating arm 22 and a third radiating arm 23 which are respectively connected to the two ends of the ground arm 21 and extend toward the side away from the feed arm 11, Thus, a transparent structure is formed between the second radiating arm 22 and the third radiating arm 23, so that the antenna is less affected by the feed cable. Since the low-frequency part of the antenna adopts a continuously bent structure, the size of the antenna is reduced and the structure is simple.
  • the different effective radiation parts of the antenna are used for different frequency bands so that it can work in dual frequency, and effectively ensure the omnidirectional radiation of the pattern in the two frequency bands, and the maximum inclination angle is in the horizontal direction.
  • the antenna adopts the asymmetric structure of the upper and lower arms so that the antenna has a larger standing wave bandwidth, so that the required standing wave bandwidth can be achieved within the limited length of the antenna.

Landscapes

  • Details Of Aerials (AREA)

Abstract

La présente invention concerne une antenne, qui comprend une première partie de rayonnement, une seconde partie de rayonnement et une ligne coaxiale, la ligne coaxiale comprenant un fil interne et un fil externe isolé et isolé du fil interne ; la première partie de rayonnement comprend un bras d'alimentation et un premier bras de rayonnement relié au bras d'alimentation, le bras d'alimentation comporte un point d'alimentation, et le fil interne est électriquement connecté au bras d'alimentation par l'intermédiaire du point d'alimentation ; la seconde partie de rayonnement comprend un bras de mise à la terre, un deuxième bras de rayonnement et un troisième bras de rayonnement, le bras de mise à la terre et le bras d'alimentation étant disposés à des intervalles, le deuxième bras de rayonnement et le troisième bras de rayonnement étant respectivement reliés aux deux extrémités du bras de mise à la terre et s'étendant vers un côté à l'opposé du bras d'alimentation ; le bras de mise à la terre comporte un point de mise à la terre, et le fil externe est électriquement connecté au bras de mise à la terre par l'intermédiaire du point de mise à la terre. L'invention rend l'antenne moins affectée par le câble d'alimentation, réalise la largeur de bande d'onde stationnaire requise dans la longueur limitée de l'antenne, réduit la taille de l'antenne, et a une structure simple.
PCT/CN2020/116582 2019-10-31 2020-09-21 Antenne WO2021082807A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201911063060.7A CN110828990A (zh) 2019-10-31 2019-10-31 一种天线
CN201911063060.7 2019-10-31

Publications (1)

Publication Number Publication Date
WO2021082807A1 true WO2021082807A1 (fr) 2021-05-06

Family

ID=69552227

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/116582 WO2021082807A1 (fr) 2019-10-31 2020-09-21 Antenne

Country Status (2)

Country Link
CN (1) CN110828990A (fr)
WO (1) WO2021082807A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110931965B (zh) * 2019-10-25 2022-05-17 深圳市道通智能航空技术股份有限公司 双频天线和飞行器
CN110828990A (zh) * 2019-10-31 2020-02-21 深圳市道通智能航空技术有限公司 一种天线
CN113644421A (zh) * 2020-04-27 2021-11-12 苏州硕贝德创新技术研究有限公司 一种高增益的多频小型化全向天线

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998020578A1 (fr) * 1996-11-05 1998-05-14 Samsung Electronics Co., Ltd. Structure de passage pour cuve de reacteur nucleaire
CN102110897A (zh) * 2010-12-19 2011-06-29 西安海天天线科技股份有限公司 一种用于移动通信的微带全向天线
CN110199435A (zh) * 2017-01-13 2019-09-03 华为技术有限公司 具有多天线系统的移动设备
CN110277631A (zh) * 2019-06-14 2019-09-24 深圳市道通智能航空技术有限公司 一种双频天线及飞行器
CN110828990A (zh) * 2019-10-31 2020-02-21 深圳市道通智能航空技术有限公司 一种天线

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201438502U (zh) * 2009-07-28 2010-04-14 北京偶极通信设备有限责任公司 双频宽带双偶极子天线
TWI487200B (zh) * 2012-02-08 2015-06-01 Wistron Neweb Corp 立體天線、無線通訊裝置
CN204614948U (zh) * 2015-05-27 2015-09-02 深圳光启智能光子技术有限公司 天线装置及无线桥接系统
CN105576352B (zh) * 2015-06-30 2019-08-02 宇龙计算机通信科技(深圳)有限公司 一种天线及终端
CN211208664U (zh) * 2019-10-31 2020-08-07 深圳市道通智能航空技术有限公司 一种天线

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998020578A1 (fr) * 1996-11-05 1998-05-14 Samsung Electronics Co., Ltd. Structure de passage pour cuve de reacteur nucleaire
CN102110897A (zh) * 2010-12-19 2011-06-29 西安海天天线科技股份有限公司 一种用于移动通信的微带全向天线
CN110199435A (zh) * 2017-01-13 2019-09-03 华为技术有限公司 具有多天线系统的移动设备
CN110277631A (zh) * 2019-06-14 2019-09-24 深圳市道通智能航空技术有限公司 一种双频天线及飞行器
CN110828990A (zh) * 2019-10-31 2020-02-21 深圳市道通智能航空技术有限公司 一种天线

Also Published As

Publication number Publication date
CN110828990A (zh) 2020-02-21

Similar Documents

Publication Publication Date Title
WO2021082807A1 (fr) Antenne
WO2020249087A1 (fr) Antenne double bande et aéronef
WO2021078260A1 (fr) Antenne à double bande et véhicule aérien
CN110676575B (zh) 一种小型化的高增益双频wifi天线
CN104795630A (zh) 双频wifi全向天线
US11329397B2 (en) Flexible polymer antenna with multiple ground resonators
JP2005312062A (ja) 小型アンテナ
CN104638367A (zh) 双频段微带天线
US9947999B2 (en) Balanced antenna
CN211295385U (zh) 一种天线辐射装置及天线
TWI538310B (zh) 雙頻印刷式的單極天線
KR20050107881A (ko) 광대역 특성의 다중 미앤더 스트립 모노폴 안테나
KR101859179B1 (ko) 소형 광대역 대수 주기 안테나
CN210111029U (zh) 一种双频天线及飞行器
TWI426657B (zh) Double V-type dual-band antenna
KR100729627B1 (ko) 단방향성 방사패턴을 갖는 초광대역 안테나
CN211208664U (zh) 一种天线
TWM599482U (zh) 多頻天線裝置
CN105409058A (zh) 一种天线装置和终端
TWI462393B (zh) 天線
US9331383B2 (en) Antenna structure and the manufacturing method therefor
KR101816018B1 (ko) 소형 광대역 대수 주기 안테나
CN105356046A (zh) 一种应用在无线局域网的双频全向天线
TWI467853B (zh) 雙頻天線及應用該雙頻天線之無線通訊裝置
CN110265777B (zh) 赋形平面八木对数周期天线

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: 20881869

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: 20881869

Country of ref document: EP

Kind code of ref document: A1