EP3349301A1 - Dual-band dipole antenna and electronic system - Google Patents

Dual-band dipole antenna and electronic system Download PDF

Info

Publication number
EP3349301A1
EP3349301A1 EP17170110.5A EP17170110A EP3349301A1 EP 3349301 A1 EP3349301 A1 EP 3349301A1 EP 17170110 A EP17170110 A EP 17170110A EP 3349301 A1 EP3349301 A1 EP 3349301A1
Authority
EP
European Patent Office
Prior art keywords
antenna
dual
electrical connection
radiation
recited
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP17170110.5A
Other languages
German (de)
English (en)
French (fr)
Inventor
Chih-Yung Huang
Kuo-Chang Lo
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.)
Arcadyan Technology Corp
Original Assignee
Arcadyan Technology Corp
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 Arcadyan Technology Corp filed Critical Arcadyan Technology Corp
Publication of EP3349301A1 publication Critical patent/EP3349301A1/en
Withdrawn legal-status Critical Current

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
    • H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
    • 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
    • H01Q5/40—Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements
    • 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
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/242—Supports; 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
    • H01Q1/243—Supports; 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 with built-in antennas
    • 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
    • H01Q5/30—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
    • 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
    • H01Q9/28—Conical, cylindrical, cage, strip, gauze, or like elements having an extended radiating surface; Elements comprising two conical surfaces having collinear axes and adjacent apices and fed by two-conductor transmission lines
    • H01Q9/285—Planar dipole

Definitions

  • the present invention is generally related to a dipole antenna and a system, and in particular to a compact-sized dual-band dipole antenna having a radiator with an isotropic current flow, and an electronic system using the antenna.
  • a dipole antenna includes two radiators having two directions of current flow. A total length of the two radiators is around a half wavelength. References are made to Fig. 1 and Fig. 2.
  • Fig. 1 shows the two radiators 11 and 12 at two sides of an antenna. The feeding signals are fed to the antenna via a wire 13, and form two opposite directions of currents that are indicated by two arrows in the diagram.
  • Fig. 2 shows an antenna having two symmetric radiators 21 and 22. The currents are fed to the radiators 21 and 22 of the antenna via a wire 23. The arrows in the diagram indicate two opposite current directions over the radiators 21 and 22. The radiators at the two sides of the dipole antenna render a wider radiation field.
  • the disclosure in accordance with the present disclosure is related to a dual-band dipole antenna, and an electronic system adopting the dual-band dipole antenna.
  • the dual-band dipole antenna includes a first antenna member that has a turning portion and forms an L-shaped printed radiator, or a U-shaped printed radiator having two turning portions.
  • the dual-band dipole antenna further includes a second antenna member that is a square-shaped printed radiator with four lateral sides.
  • a coupling effect is induced at the portion between at least two adjacent sides and the first antenna member.
  • a current source is electrically connected with a first electrical connection member of the first antenna member and a second electrical connection member of the first electrical connection member via a conductor.
  • the arrangement forms a current with the same signal direction over the first antenna member and the second antenna member respectively, and a coupling effect is induced at two adjacent sides of the first antenna member and the second antenna member.
  • the first electrical connection member and the second electrical connection member are disposed at adjacent positions for respectively connecting to a current end and a ground end of a wire in the same direction.
  • the first antenna member is used to induce a first band electromagnetic wave; the coupling effect induced at the side of the second antenna member adjacent to the first antenna member causes the second antenna member to induce a second band electromagnetic wave with an optimized frequency response.
  • the disclosure is also related to an electronic system that is such as wireless network equipment adopting the aforementioned dual-band dipole antenna.
  • the disclosure is related to a dual-band dipole antenna and an electronic system adopting the dual-band dipole antenna in accordance with the present disclosure.
  • One of the objectives of the present disclosure is to provide a compact-sized printed antenna, e.g. a dual-band dipole antenna, having a band applied to the antenna that is easily adjustable.
  • the area of the compact-sized antenna is smaller than the conventional dipole antenna.
  • the size of the compact-sized antenna is reduced by more than 50-70% of the size of the conventional dipole antenna.
  • the compact-sized dual-band dipole antenna can be applicable to two frequency bands, e.g. 2G and 5G bands.
  • this compact-sized printed antenna can save material cost of the printed antenna, and can be used for more applications.
  • the dual-band dipole antenna can be used in an electronic system, e.g. a wireless transmission device.
  • the dual-band dipole antenna can be adjusted and corrected on as desired for reaching a specific application.
  • the dual-band dipole antenna is configured to have an independent ground, but not any additional ground for a common antenna. This configuration of the antenna allows the dual-band dipole antenna to be disposed in any position inside the electronic system without being limited by the requirement of being connected to the ground of the system.
  • the signals for the dual-band dipole antenna can be fed to a feeding point of the antenna via a wire.
  • the wire is such as a 50 ⁇ coaxial cable soldered to the feeding point of the antenna.
  • the other end of the wire can be extended to an RF module of the electronic system.
  • the dual-band dipole antenna can be printed on a circuit board. Compared with the conventional three-dimensional antenna, the printed dual-band dipole antenna can reduce mold cost and assembly cost, and prevent the risk of deformation.
  • the antenna has a U-shaped or inverted U-shaped radiator that forms a first antenna member 31 of the antenna, and a square-shaped or near square-shaped second antenna member 32.
  • the radiator of the dual-band dipole antenna has at least one turning portion.
  • the first antenna member 31 is a printed radiator with two turning portions that form a first radiation member 313, a second radiation member 314, and a third radiation member 315 of the first antenna member 31.
  • the first radiation member 313 at the left side of the diagram which is similar with the first radiation member 413 shown in Fig. 4 , has a first electrical connection member 311.
  • the second antenna member 32 is a near-square shaped printed radiator.
  • the printed second antenna member 32 is surrounded by the U-shaped first antenna member 31.
  • the radiator at the upper-left corner of the second antenna member 32 has a second electrical connection member 321.
  • the first antenna member 31 is configured to have a first radiation member 313, a second radiation member 314, and a third radiation member 315 that form two turning portions of the U-shaped antenna. It should be noted that a length of the second radiation member 314 and the third radiation member 315 is larger than one half of a total length of the dual-band dipole antenna.
  • the currents flowing through the first antenna member 31 and the second antenna member 32 form a same signal direction.
  • the first electrical connection member 311 and the second electrical connection member 321 may be disposed at two adjacent positions that correspond to each other.
  • the first electrical connection member 311 acts as a signal-feeding over the first radiation member 313 for the first antenna member 31.
  • the second electrical connection member 321 of the second antenna member 32 is at the opposite position adjacent to the first radiation member 313 of the first antenna member 31.
  • the second electrical connection member 321 acts as a grounding area for the second antenna member 32.
  • This configuration of the antenna mentioned above is for the wire 33 connected with a current end and a grounding end over the same direction since the first electrical connection member 311 forms a signal-feeding area for the first antenna member 31, and the second electrical connection member 321 forms a grounding area for the second antenna member 32.
  • the wire 33 is arranged in a horizontal direction from left to right.
  • the wire 33 acts as a conductor that can be a coaxial cable.
  • the coaxial cable is a type of cable that has an inner conductor acting as the current end surrounded by a tubular insulating layer conducting a shield, and an outer shield acting as the grounding end sharing a geometric axis.
  • the current end and the grounding end are connected with the first electrical connection member 311 and the second electrical connection member 321 respectively.
  • a current source is electrically connected to the first electrical connection member 311 and the second electrical connection member 321 over the wire 33.
  • the current along the wire 33 forms a first signal direction 301 over the first antenna member 31 and a second signal direction 302 over the second antenna member 32. It is preferable that the configuration of the antenna forms a current with the same signal direction over the first antenna member and the second antenna member respectively.
  • a coupling effect is particularly induced at the two adjacent sides of the first antenna member and the second antenna member.
  • the first antenna member 31 is used to induce a first band electromagnetic wave; the coupling effect induced at the side of the second antenna member 32 adjacent to the first antenna member 31 causes the second antenna member 32 to induce a second band electromagnetic wave with an optimized frequency response.
  • the first band electromagnetic wave is exemplified as being around 2GHz
  • the second band electromagnetic wave is exemplified as being around 5GHz.
  • the first antenna member 31 has a conductor structure 34 formed at a turning portion.
  • the conductor structure 34 acts as a function of impedance matching. It should be noted that the structure of impedance matching is not limited to the current embodiment.
  • the wire 33 electrically connects to the first antenna member 31 or the second antenna member 32 using the joining method such as, but not limited to, welding, brazing, soldering, swaging, riveting, or a screw.
  • an L-shaped printed radiator having only one turning portion can be used.
  • Fig. 4 showing an L-shaped radiator of the first antenna member of the antenna according to one embodiment of the present disclosure.
  • An L-shaped first antenna member 41 can be divided into a first radiation member 413 and a second radiation member 414 by the turning portion.
  • a first electrical connection member 411 is formed at one end of the first radiation member 413.
  • An additional conductor structure 415 formed at the turning portion of the L-shaped first antenna member 41 can be used to tune an operating frequency of the antenna.
  • the conductor structure 415 is exemplified as a square-shaped conductor. It should be noted that, in the L-shaped antenna, a length of the second radiation member 414 is larger than one half of a total length of the dual-band dipole antenna.
  • the second antenna member 42 of the dual-band dipole antenna is still a near-square shaped printed radiator.
  • the position of the second electrical connection member 421 is opposite to the first electrical connection member 411.
  • a wire 43 is connected to the first electrical connection member 411, which acts as a signal-feeding area, and the second electrical connection member 421, which acts as a grounding area, along the same direction.
  • a coupling effect can also be induced between the first antenna member 41 and the second antenna member 42.
  • a current is fed to the antenna via the first electrical connection member 411 and the second electrical connection member 421 respectively, the same signaling direction is formed over the first antenna member 41 and the second antenna member 42.
  • the coupling effect is induced to generate an additional operating frequency of the antenna.
  • an antenna mainly includes a first antenna member 51 and a second antenna member 52.
  • the first antenna member 51 can be divided into a first radiation member 513 and a second radiation member 514 by a turning portion.
  • a first electrical connection member 511 is formed on the first radiation member 513 of the first antenna member 51, and a second electrical connection member 521 is formed on the second antenna member 52.
  • a first conductor structure 515 formed at the turning portion of the first antenna member 51 is used to conduct an impedance matching. Further, an extended portion of the first radiation member 513 forms a second conductor structure 516.
  • the second conductor structure 516 is a structural portion extending downwardly from the first electrical connection member 511. It should be noted that the first electrical connection member 511 and the second electrical connection member 521 are still maintained at the two opposite positions allowing the current to flow through the first antenna member 51 and the second antenna member 52 along the same direction.
  • the configuration of the impedance matching structure may not be excluded for other applications that have two turning portions of the antenna.
  • the dual-band dipole antenna exemplarily shown in Fig. 6 describes the configuration of scales of a first antenna member 61 and a second antenna member 62 thereof.
  • a turning portion of the dual-band dipole antenna is provided in this example.
  • a first electrical connection member 611 of the first antenna member 61 and a second electrical connection member 621 of the second antenna member 62 are formed at two opposite positions that can facilitate a wire connected to the antenna along a predetermined direction.
  • the radiator of the first antenna member 61 is used to induce a first band electromagnetic wave; the radiator of the second antenna member 62 is used to induce a second band electromagnetic wave.
  • the coupling effect induced at the side of the second antenna member adjacent to the first antenna member causes the second antenna member to induce the second band electromagnetic wave with an optimized frequency response.
  • FIG. 6 illustrating the configuration of the antenna according to one of the embodiments of the present disclosure. A proportional relationship is shown to exist structurally between a radiator length L of first antenna member and a radiator length A of second antenna member.
  • the length of the first antenna member is 'L", but its maximum length can be 'L'; the length of the second antenna member is 'a' or its maximum length 'A'.
  • the change of the length 'a' of the second antenna member can be 'a' plus a first length ' ⁇ a1', 'a' plus a second length ' ⁇ a2', and 'a' plus a third length ' ⁇ a3.'
  • the length 'L' of the first antenna member may have a certain proportional relationship with the wavelength of the first band electromagnetic wave.
  • the length 'a' of the second antenna member should reach a certain length for inducing the second band electromagnetic wave.
  • the coupling effect induced between the first antenna member 61 and second antenna member 62 may also be taken into account for reaching the second band electromagnetic wave.
  • both a first coupling distance d1 and a second coupling distance d2 should be taken into account for reaching a certain band of electromagnetic wave when the length 'L" of the first antenna member and the length 'a' of the second antenna member are defined.
  • a proportion 'L'/a' of the length 'L" of the first antenna member and the length 'a' of the second antenna member is provided.
  • This proportion 'L'/a' changes with the change of length of the second antenna member 62.
  • the proportion 'L' /a' has a maximum value that may be limited within a certain range.
  • the limitation of the proportion 'L' /a' allows the dual-band dipole antenna to function under a certain range of the electromagnetic wave as demanded by the electronic system. °
  • Fig. 7 illustrating the performance of the VSWR of the dual-band dipole antenna in accordance with the present disclosure.
  • a horizontal axis of the histogram represents frequency (GHz), and a vertical axis of the histogram indicates return loss (dB).
  • the experimental data of the return loss shows several operating frequencies being applicable to the dual-band dipole antenna. For example, a first mark 1 on the curve indicates a return loss 1.8716 around the frequency 2.4GHz; a second mark 2 indicates a return loss 1.6695 around the frequency 2.45GHz; and a third mark 3 indicates a return loss 1.7719 around the frequency 2.5GHz. Accordingly, the dual-band dipole antenna can apply to the operating frequency around 2400MHz to 2500MHz, which is applicable to IEEE802.11 b/g based wireless communication protocol.
  • a fourth mark 4 indicates a return loss 1.6173 around the frequency 4.9GHz and a fifth mark 5 indicates a return loss 1.3467 around 5.85GHz that allow the dual-band dipole antenna to be applied to the operating frequency 4900MHz to 5850MHz and that meets IEEE802.11 ac based wireless communication protocol. Therefore, the dual-band dipole antenna achieves the dual-band applications.
  • the disclosure is also directed to an electronic system, e.g. a wireless network device, which adopts the aforementioned dual-band dipole antenna in accordance with the present disclosure.
  • a wireless network device which adopts the aforementioned dual-band dipole antenna in accordance with the present disclosure.
  • FIG. 8 showing a schematic diagram depicting the main electronic components of the electronic system.
  • a dual-band dipole antenna 81 formed on a circuit board 80 of the electronic system is shown.
  • the main components of the electronic system include a ground plane 84, an RF module 83, a baseband module 85, and a member unit 87.
  • the RF module 83 is the circuit for processing the wireless signals that is electrically connected with the dual-band dipole antenna 81.
  • the RF module 83 is used to convert the signals received by the antenna 81, or convert the signals to the electromagnetic wave to be transmitted.
  • the signals reaching the dual-band dipole antenna 81 are received by the RF module 83, and processed by the baseband module 85.
  • the signals can be buffered to the member unit 87 and then provided to the electronic system.
  • the signals generated by the electronic system are processed by the baseband module 85, and converted to the electromagnetic wave by the RF module 83.
  • the dual-band dipole antenna 81 then sends out the electromagnetic wave.
  • the dual-band dipole antenna of the present disclosure has an isotropic current flow through its two radiators. Further, the dual-band dipole antenna has an independent ground so as to achieve the benefits of miniaturization and wide application.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Details Of Aerials (AREA)
  • Support Of Aerials (AREA)
EP17170110.5A 2017-01-11 2017-05-09 Dual-band dipole antenna and electronic system Withdrawn EP3349301A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW106100860A TWI629836B (zh) 2017-01-11 2017-01-11 雙頻偶極天線與電子系統

Publications (1)

Publication Number Publication Date
EP3349301A1 true EP3349301A1 (en) 2018-07-18

Family

ID=58698991

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17170110.5A Withdrawn EP3349301A1 (en) 2017-01-11 2017-05-09 Dual-band dipole antenna and electronic system

Country Status (3)

Country Link
EP (1) EP3349301A1 (zh)
CN (1) CN108306104A (zh)
TW (1) TWI629836B (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10680332B1 (en) 2018-12-28 2020-06-09 Industrial Technology Research Institute Hybrid multi-band antenna array
CN111816991A (zh) * 2020-06-03 2020-10-23 昆山睿翔讯通通信技术有限公司 一种实现等效巴伦的结构及方法
TWI731792B (zh) * 2020-09-23 2021-06-21 智易科技股份有限公司 具有雙頻天線的傳輸結構

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040178957A1 (en) * 2003-03-14 2004-09-16 Kuang-Yuan Chang Multi-band printed monopole antenna
JP2010193396A (ja) * 2009-02-20 2010-09-02 Antenna Technology Inc ２周波共用平面アンテナ
EP2752939A1 (en) * 2013-01-03 2014-07-09 ACER Incorporated Communication device and antenna element therein
EP3104458A1 (en) * 2015-06-12 2016-12-14 Arcadyan Technology Corporation Antenna structure

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004328694A (ja) * 2002-11-27 2004-11-18 Taiyo Yuden Co Ltd アンテナ及び無線通信カード
TWM253069U (en) * 2004-03-08 2004-12-11 High Tek Harness Entpr Co Ltd Printed antenna
US7242352B2 (en) * 2005-04-07 2007-07-10 X-Ether, Inc, Multi-band or wide-band antenna
TWM331199U (en) * 2007-08-07 2008-04-21 Aiptek Int Inc Wide-frequency dipole antenna
CN101635384B (zh) * 2008-07-24 2013-05-29 启碁科技股份有限公司 天线及其具有天线的电子装置
CN105940556A (zh) * 2013-10-16 2016-09-14 盖尔创尼克斯有限公司 具双调谐机构的小型化天线
CN106299616A (zh) * 2015-06-25 2017-01-04 智易科技股份有限公司 天线结构

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040178957A1 (en) * 2003-03-14 2004-09-16 Kuang-Yuan Chang Multi-band printed monopole antenna
JP2010193396A (ja) * 2009-02-20 2010-09-02 Antenna Technology Inc ２周波共用平面アンテナ
EP2752939A1 (en) * 2013-01-03 2014-07-09 ACER Incorporated Communication device and antenna element therein
EP3104458A1 (en) * 2015-06-12 2016-12-14 Arcadyan Technology Corporation Antenna structure

Also Published As

Publication number Publication date
CN108306104A (zh) 2018-07-20
TWI629836B (zh) 2018-07-11
TW201826619A (zh) 2018-07-16

Similar Documents

Publication Publication Date Title
US7170456B2 (en) Dielectric chip antenna structure
US10389024B2 (en) Antenna structure
US10886633B2 (en) Flexible polymer antenna with multiple ground resonators
CN109309279B (zh) 天线结构
EP3349301A1 (en) Dual-band dipole antenna and electronic system
WO2014132519A1 (ja) アンテナ、プリント基板、及び無線通信装置
US8593368B2 (en) Multi-band antenna and electronic apparatus having the same
TWI532252B (zh) 具有電纜接地區域的天線結構
CN108832277A (zh) 一种电感加载的小型化天线
US20120274530A1 (en) Coupler
US8754821B2 (en) Multi-band antenna
JP2008278411A (ja) アンテナ装置
CN107394384B (zh) 印制槽隙倒f天线及蓝牙通讯装置
US8723754B2 (en) Multi-band antenna
US9331383B2 (en) Antenna structure and the manufacturing method therefor
US11424536B2 (en) Multiband compatible antenna and radio communication device
US20040090375A1 (en) Wide-band antenna
TW201301662A (zh) 多頻天線及具有其之電子裝置
TWI467853B (zh) 雙頻天線及應用該雙頻天線之無線通訊裝置
US11996620B2 (en) Antenna device
US11569581B2 (en) Transmission structure with dual-frequency antenna
US20160365639A1 (en) Antenna structure
US11876307B2 (en) Antenna structure
CN112635982B (zh) 短路共平面波导馈入双极化宽带天线
JP2008022261A (ja) アンテナ装置

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20190119