WO2018133426A1 - Antenne double bande pliable reposant sur une structure de fente en forme de u - Google Patents

Antenne double bande pliable reposant sur une structure de fente en forme de u Download PDF

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Publication number
WO2018133426A1
WO2018133426A1 PCT/CN2017/100175 CN2017100175W WO2018133426A1 WO 2018133426 A1 WO2018133426 A1 WO 2018133426A1 CN 2017100175 W CN2017100175 W CN 2017100175W WO 2018133426 A1 WO2018133426 A1 WO 2018133426A1
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WO
WIPO (PCT)
Prior art keywords
metal piece
folded
shaped slot
metal sheet
band
Prior art date
Application number
PCT/CN2017/100175
Other languages
English (en)
Chinese (zh)
Inventor
彭彪
邓力
李书芳
张贯京
葛新科
高伟明
张红治
Original Assignee
深圳市景程信息科技有限公司
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 深圳市景程信息科技有限公司 filed Critical 深圳市景程信息科技有限公司
Publication of WO2018133426A1 publication Critical patent/WO2018133426A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/08—Means for collapsing antennas or parts thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/10—Resonant slot antennas
    • H01Q13/16—Folded slot 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
    • H01Q5/30—Arrangements for providing operation on different wavebands

Definitions

  • the present invention relates to the field of radio frequency microwave communication technologies, and in particular, to a folded dual-band antenna based on a U-shaped slot structure.
  • TVWS Television White Space
  • 2.4 GHz WiFi 2.4 GHz WiFi band
  • antenna design that can cover high and low frequencies, it is often through the method of combining multiple antennas, but this design method is not conducive to reducing the antenna size.
  • the main object of the present invention is to provide a folded dual-band antenna based on a U-shaped slot structure, which can realize a TVWS working frequency band of 470-790 MHz without increasing the size of an existing folded metal piece antenna.
  • the present invention provides a folded dual-band antenna based on a U-shaped slot structure, including a folded metal piece and an SMA joint, and the tail portion of the folded metal piece is folded once from the inside to form a tail metal piece.
  • the front portion of the folded metal sheet is folded four times from the inner side to form a bottom metal piece, an outer metal piece, a top metal piece, an inner metal piece and an intermediate metal piece, and the top metal piece, the middle metal piece and the bottom metal piece are mutually Parallelly disposed, the outer metal piece, the inner metal piece and the tail metal piece are arranged in parallel with each other, wherein:
  • the ground end of the SMA joint is welded to the bottom metal piece, and the bottom metal piece is provided with a hole;
  • a feed line of the SMA joint passes through a hole of the bottom metal piece and is welded to the intermediate metal piece to form a feed connection point; [0007] the position of the feed connection point on the intermediate metal piece is directly above the position of the hole on the bottom metal piece;
  • a U-shaped slot resonator is hollowed out around the feed connection point and on the intermediate metal piece, and the effective electrical length of the U-shaped slot resonator in the 2.4 GHz band is one-half wavelength.
  • the U-shaped slot resonator has a slit inner diameter W ⁇ Mmm, and a slit length ! ⁇ 3 is 34! ⁇
  • the gap width is L 4 15mm.
  • the distance d between the U-shaped slot end of the U-shaped slot resonator and the wide side of the intermediate metal piece is 2 mm, and the U-shaped closed end of the U-shaped slot resonator is connected to the feed.
  • the distance between the points is d 2 5.35 mm.
  • the folded metal piece is a metal copper piece with a width W. It is 60mm and has a thickness of 0.2mm.
  • the length of the tail metal piece is H. It is 61mm.
  • the bottom metal piece has a length L. It is 150mm.
  • the lateral distance d between the hole and the wide side of the bottom metal piece. 45.45
  • the folded dual-band antenna based on the U-shaped slot structure of the present invention realizes a low frequency (470-790 MHz) wide operating frequency band and can cover a TVWS working frequency band of 470-790 MHz.
  • the utility model optimizes the feeding structure of the antenna, hollows out a slot resonator on the intermediate metal piece as the feeding plane, obtains a high frequency matching without increasing the size of the antenna, and realizes WiFi in the 2.4 GHz band.
  • Working frequency Compared with the dual-band antenna designed by combining multiple antennas, the folded dual-band wideband antenna of the present invention can realize the TVWS working frequency band and the 2.4 GHz frequency band of the 470-790 MHz band without increasing the antenna size.
  • the WiFi working frequency band effectively reduces the size of the antenna and realizes miniaturization of the antenna.
  • FIG. 1 is a three-dimensional structure of a preferred embodiment of a folded dual-band antenna based on a U-shaped slot structure according to the present invention
  • FIG. 2 is a side view of a folded-type dual-band antenna based on a U-shaped slot structure of the present invention
  • FIG. 3 is a top view of an intermediate metal piece of a folded-type dual-band antenna based on a U-shaped slot structure according to the present invention
  • FIG. 4 is a schematic diagram showing simulation results of a reflection coefficient of a folded dual-band antenna based on a U-shaped slot structure according to the present invention
  • FIG. 5 is a schematic diagram showing the influence of the length of the intermediate metal piece of the folded dual-band antenna based on the U-shaped slot structure on the reflection coefficient S peel of the antenna;
  • FIG. 6 is a schematic diagram showing the influence of the slit length of the slot resonator of the folded dual-band antenna based on the U-shaped slot structure on the reflection coefficient S favor of the antenna;
  • 7a, 7b, and 7c are simulation directions of the folded dual-band antenna based on the U-shaped slot structure at three frequencies of 0.51 G Hz, 0.73 GHz, and 2.49 GHz, respectively.
  • FIG. 1 is a schematic perspective view of a preferred embodiment of a folded dual-band antenna based on a U-shaped slot structure according to the present invention
  • FIG. 2 is a U-shaped slot according to the present invention.
  • FIG. 3 is a plan view of the intermediate metal piece of the folded dual-band antenna based on the U-shaped slot structure of the present invention.
  • the folded dual-band antenna based on the U-shaped slot structure includes a folded metal piece 1 and an SMA joint 2, and the tail portion of the folded metal piece 1 is folded once from the inside to form the tail metal piece 11, and the folded metal piece 1 is folded.
  • the front portion is folded four times from the inside to form the bottom metal piece 12, the outer metal piece 13, the top metal piece 14, the inner metal piece 15, and the intermediate metal piece 16.
  • Each folding manner of the laminated metal sheet 1 can be bent at any angle, for example, angles of 30°, 45°, 60°, and 90°.
  • the two metal sheets of this embodiment adopt a vertical folding manner of 90° angle.
  • the tail metal piece 11 and the bottom metal piece 12 are vertically folded and connected to each other, and the bottom metal piece 12 and the outer metal piece 13 are vertically folded and connected to each other, and the outer metal piece 13 and the top metal piece 14 are vertically folded and connected to each other, and the top metal piece 14 and the inner side are respectively
  • the metal sheets 15 are vertically folded and connected to each other, and the inner metal sheets 15 and the intermediate metal sheets 16 are vertically folded and connected to each other.
  • the top metal piece 14, the intermediate metal piece 16 and the bottom metal piece 12 are disposed in parallel with each other, and the outer metal piece 13, the inner metal piece 15, and the tail metal piece 11 are disposed in parallel with each other.
  • the tail portion of the folded metal sheet 1 is folded once to form the tail metal piece 11 with a length H0 of 61 mm; the bottom metal piece 12 is the bottom of the folded double-band antenna based on the U-shaped slit structure, the length L o
  • the SMA connector 2 is a common antenna interface, and SMA is an abbreviation of Sub-Miniature-A.
  • the SMA connector 2 includes a ground end 21 and a feed line 22, and the ground end 21 of the SMA joint 2 is welded to the bottom of the bottom metal piece 12.
  • a hole 120 is formed in the bottom metal piece 12, and the size of the hole 120 matches the thickness of the feed line 22 of the SMA connector 2.
  • the hole 120 has a wide side W with the bottom metal piece 12.
  • the lateral distance d 0 45.45, the hole 120 and the long side L of the bottom metal piece 12.
  • the feed line 22 of the SMA connector 2 passes through the hole 120 of the bottom metal piece 12 and is soldered to the intermediate metal piece 16 such that the solder joint of the feed line 22 of the SMA joint 2 and the intermediate metal piece 16 forms a feed connection point 20, thereby Implement the feed.
  • the position of the feed connection point 20 on the intermediate metal piece 16 is at the position of the hole 120 at the bottom metal piece 12.
  • a hollowed out U-shaped slot resonator 10 is disposed around the feed connection point 20 and on the intermediate metal piece 16.
  • the U-shaped slot resonator 10 has an effective electrical length of one-half wavelength in the 2.4 GHz band (2.4-2.483 GHz), and can generate a WiFi operating band in the 2.4 GHz band.
  • the U-shaped slot resonator 10 is a resonator having a U-shaped slot structure, such as the white portion in FIG.
  • the inner diameter of the slot of the U-shaped slot resonator 10 is ⁇ , which is 2.2! ⁇
  • the gap length 1 ⁇ is 341! ⁇ , Gap width 4
  • the distance between d! for? ! ⁇ !, the distance d 2 between the U-shaped closed end of the U-shaped slot resonator 10 and the feed connection point 20 is 5.35 mm.
  • the intermediate metal piece 16 serves as a feeding plane. Since the utility model has a U-shaped slot resonator 10 disposed on the intermediate metal piece 16, a high frequency matching is obtained without increasing the size of the antenna, thereby folding the utility model.
  • the dual-band antenna can cover the 2.4GHz WiFi operating band.
  • the folded dual-band antenna based on the U-shaped slot structure of the present invention realizes a low frequency broadband (470-790 MHz) operating frequency band, and thus can cover a TVWS operating frequency band of 470-790 MHz.
  • a U-shaped slot resonator 10 is hollowed out on the intermediate metal piece 16 as a feed plane, and a high frequency matching is obtained without increasing the size of the antenna, achieving 2.4 GHz. WiFi working frequency band.
  • the folded dual-band antenna based on the U-shaped slot structure of the present invention can effectively reduce the antenna size, and can be obtained without increasing the size of the antenna.
  • the 470-790MHZ TVWS operating band and the 2.4GHz WiFi operating band have dual-band functions, and the antenna is miniaturized.
  • FIG. 4 is a schematic diagram showing simulation results of a reflection coefficient S favor of a folded dual-band antenna based on a U-shaped slot structure according to the present invention.
  • the utility model is based on a U-shaped slot.
  • the structure of the folded dual-band antenna has three resonant frequency modes: f ml , f m2 and f m3 , where f ml and f m2 are related to the overall size of the antenna, and f m3 is generated by the U-shaped slot resonator 10.
  • the operating frequency of the antenna covers the TVWS band (470-790MHZ) and the 2.4GHz band WiFi (2.4-2.483GHz).
  • f ml is the lowest operating frequency of the antenna, and the frequency f ml can be changed by changing the antenna.
  • the design height H is adjusted; f m2 can be adjusted by changing the design length L 2 of the intermediate metal piece 16 (the last folded metal piece of the antenna); f m3 can be adjusted by changing the design gap length L 3 of the slot resonator 10 .
  • FIG. 5 is a schematic diagram showing the influence of the length L 2 of the intermediate metal piece 16 of the folded dual-band antenna based on the U-shaped slot structure on the reflection coefficient S hail of the antenna.
  • the design length L 2 3 ⁇ 4 of the intermediate metal piece 16 is long, the frequency of f m2 is lowered, and f ml and f m3 remain unchanged.
  • FIG. 6 is a schematic diagram showing the influence of the slot length L 3 of the U-shaped slot resonator 10 of the folded dual-band antenna based on the U-shaped slot structure on the reflection coefficient S think of the antenna.
  • FIGS. 7a, 7b, and 7c are simulation directions of the folded dual-band antenna based on the U-shaped slot structure at three frequencies of 0.51 GHz, 0.73 GHz, and 2.49 GHz, respectively.
  • the simulation gain values of the folded dual-band antenna based on the U-shaped slot structure at three frequencies are 2.3dBi, 2.9dBi, and 4.8dBi, respectively.
  • the antenna radiates upward, that is, the folded dual-band antenna based on the U-shaped slot structure of the present invention is in the first working frequency band (470).
  • - 790MHZ TVWS working frequency band radiates internally upwards; as can be seen from Fig.
  • the antenna radiates toward 0-90°, that is, the U-shaped slot structure based folding type according to the present invention
  • the dual-band antenna radiates between the front end of the antenna and the folded sheet metal portion of the tail in the second operating band (2.4 GHz WiFi operating band) and has a relatively high gain characteristic that contributes to the orientation of the electromagnetic signal. Transmission, therefore suitable for indoor private WiFi systems.
  • the folded dual-band antenna based on the U-shaped slot structure of the present invention is not only simple to process, low in cost, but also can generate three basic resonance modes, and thus is widely used in broadband and multi-band RF microwave communication. Since the U-shaped slot resonator is obtained on the feed level surface, there is no need to add an additional resonator body, and the function of reducing the size of the folded dual-band antenna based on the u-type slot structure of the present invention is obtained.
  • the folded dual-band antenna based on the U-shaped slot structure of the present invention realizes a low frequency (470-790 MHz) wide working frequency band, and can cover the TVWS working frequency band of 470-790 MHz.
  • the utility model optimizes the feeding structure of the antenna, hollows out a slot resonator on the intermediate metal piece as the feeding plane, obtains a high frequency matching without increasing the size of the antenna, and realizes WiFi in the 2.4 GHz band.
  • Working frequency Compared with the dual-band antenna designed by combining multiple antennas, the folded dual-band wideband antenna of the present invention can realize the TVWS working frequency band and the 2.4 GHz frequency band of the 470-790 MHz band without increasing the antenna size. WiFi working frequency band, The antenna size is effectively reduced, and the antenna is miniaturized.

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Abstract

La présente invention concerne une antenne à double bande pliable qui repose sur une structure de fente en forme de U et comprend une tôle pliable ainsi qu'un connecteur SMA. La partie de queue de la tôle pliable est pliée vers l'intérieur une fois afin de former une tôle de partie de queue, la partie avant de la tôle pliable est pliée vers l'intérieur quatre fois afin de former séquentiellement une tôle de partie inférieure, une tôle de côté extérieur, une tôle de partie supérieure, une tôle de côté intérieur et une tôle intermédiaire. Une borne de masse du connecteur SMA est reliée à la tôle de partie inférieure de manière soudée, la tôle de partie inférieure étant dotée d'un orifice ; une ligne d'alimentation du connecteur SMA passe à travers l'orifice de la tôle de partie inférieure et est soudée à la tôle intermédiaire de manière à former un point de connexion d'alimentation. Un résonateur à fente en forme de U est creusé sur la tôle intermédiaire autour du point de connexion d'alimentation, la longueur électrique effective du résonateur à fente en forme de U dans une bande de 2,4 GHz étant d'une demie longueur d'onde. La présente invention peut mettre en œuvre une fonction double bande avec la bande de fonctionnement TVWS de 470 à 790 MHz et la bande de fonctionnement Wi-Fi de 2,4 GHz sans qu'il soit nécessaire d'augmenter la taille de l'antenne en tôle pliable existante, ce qui permet de miniaturiser l'antenne.
PCT/CN2017/100175 2017-01-22 2017-09-01 Antenne double bande pliable reposant sur une structure de fente en forme de u WO2018133426A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201720092672.9 2017-01-22
CN201720092672.9U CN206441850U (zh) 2017-01-22 2017-01-22 基于u型缝隙结构的折叠式双频段天线

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WO2018133426A1 true WO2018133426A1 (fr) 2018-07-26

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023208576A1 (fr) 2022-04-29 2023-11-02 Huber+Suhner Ag Agencement d'antenne pour applications d'antenne mimo

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN206441850U (zh) * 2017-01-22 2017-08-25 深圳市景程信息科技有限公司 基于u型缝隙结构的折叠式双频段天线
CN106910989A (zh) * 2017-01-22 2017-06-30 深圳市景程信息科技有限公司 折叠式双频段天线

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006042562A1 (fr) * 2004-10-23 2006-04-27 Electronics Research Institute Antenne quadband compacte a alimentation unique destinee a des systemes de communication sans fil
CN101345348A (zh) * 2008-09-03 2009-01-14 北京邮电大学 具有u形槽和折线槽的双波段平面倒f天线
CN101355194A (zh) * 2008-09-01 2009-01-28 北京邮电大学 双波段微带天线
US20090058736A1 (en) * 2007-08-31 2009-03-05 Meng-Chien Chiang Antenna structure and manufacture method thereof
CN106910989A (zh) * 2017-01-22 2017-06-30 深圳市景程信息科技有限公司 折叠式双频段天线
CN206441850U (zh) * 2017-01-22 2017-08-25 深圳市景程信息科技有限公司 基于u型缝隙结构的折叠式双频段天线

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006042562A1 (fr) * 2004-10-23 2006-04-27 Electronics Research Institute Antenne quadband compacte a alimentation unique destinee a des systemes de communication sans fil
US20090058736A1 (en) * 2007-08-31 2009-03-05 Meng-Chien Chiang Antenna structure and manufacture method thereof
CN101355194A (zh) * 2008-09-01 2009-01-28 北京邮电大学 双波段微带天线
CN101345348A (zh) * 2008-09-03 2009-01-14 北京邮电大学 具有u形槽和折线槽的双波段平面倒f天线
CN106910989A (zh) * 2017-01-22 2017-06-30 深圳市景程信息科技有限公司 折叠式双频段天线
CN206441850U (zh) * 2017-01-22 2017-08-25 深圳市景程信息科技有限公司 基于u型缝隙结构的折叠式双频段天线

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023208576A1 (fr) 2022-04-29 2023-11-02 Huber+Suhner Ag Agencement d'antenne pour applications d'antenne mimo

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