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WO2018133538A1 - Antenne unipolaire ultra large bande reconfigurable à caractéristique de bande étroite - Google Patents

Antenne unipolaire ultra large bande reconfigurable à caractéristique de bande étroite Download PDF

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Publication number
WO2018133538A1
WO2018133538A1 PCT/CN2017/112990 CN2017112990W WO2018133538A1 WO 2018133538 A1 WO2018133538 A1 WO 2018133538A1 CN 2017112990 W CN2017112990 W CN 2017112990W WO 2018133538 A1 WO2018133538 A1 WO 2018133538A1
Authority
WO
WIPO (PCT)
Prior art keywords
monopole antenna
notch
wideband monopole
radiating element
ultra
Prior art date
Application number
PCT/CN2017/112990
Other languages
English (en)
Chinese (zh)
Inventor
曲美君
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 WO2018133538A1 publication Critical patent/WO2018133538A1/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
    • H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • 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

Definitions

  • the present invention relates to the field of microwave communication technologies, and in particular, to a reconfigurable ultra-wideband monopole antenna having a notch characteristic.
  • ultra-wideband (UWB) communication systems with high data transmission rates, low cost, low power consumption, and strong anti-interference ability have been rapidly developed.
  • Ultra-wideband antennas have become a research hotspot of international scholars in recent years.
  • the UWB band includes bands such as WLAN and WiMAX, which may cause some interference between them.
  • the technical problem is often solved by notching.
  • the ultra-wideband antenna implements notching to load a radiation slot or a resonant branch on the antenna, which makes it difficult to ensure complete UWB performance.
  • An object of the present invention is to provide a reconfigurable ultra-wideband monopole antenna having a notch characteristic, which aims to solve the problem that the antenna in the prior art is difficult to ensure complete UWB performance and the antenna size is large.
  • the present invention provides a reconfigurable ultra-wideband monopole antenna having a notch characteristic, comprising a radiating element, a microstrip feeder, a dielectric substrate, and a grounding plate, wherein: the radiating element, The microstrip feed line is disposed on an upper surface of the dielectric substrate, and the ground plate is disposed on a lower surface of the dielectric substrate; the radiation unit includes an isosceles trapezoidal region and a rectangular region that is equal to and connected to a lower bottom of the isosceles trapezoidal region.
  • the rectangular area is provided with a circular arc slit of the lower end of the isosceles trapezoidal region; the circular arc gap is provided with a plurality of radio frequency switches; the upper base and the microstrip of the isosceles trapezoidal region of the radiating unit Feeder connection.
  • the dielectric substrate is an FR4 dielectric substrate having a relative dielectric constant of 4.4 and a thickness of 1.6 mm.
  • the arc gap is bilaterally symmetric with respect to a center line of the isosceles trapezoidal region of the radiation unit; the microstrip feed line is bilaterally symmetric with respect to a center line of the isosceles trapezoidal region of the radiation unit.
  • the size of the rectangular area of the radiating element is 20 mm x 6.5 mm; the upper base of the isosceles shaped section of the radiating element is 10 mm, the lower bottom is 20 mm, and the height is 3 mm.
  • the inner arc of the circular arc slit has a chord length of 12 mm, the inner arc has a bow height of 4 mm, the circular arc slit has a width of lmm, and the circular arc slit has a radius of 7 mm.
  • microstrip feed line has a width of 3 mm and a length of 15.5 mm.
  • radio frequency is turned into a PIN diode.
  • the isosceles trapezoidal region in the reconfigurable ultra-wideband monopole antenna having the notch characteristic of the present invention causes the radiating element to have two chamfer angles, and the two chamfer angles are bilaterally symmetric with respect to the microstrip feed line, Ultra-wideband; Furthermore, the reconfigurable ultra-wideband monopole antenna having the notch characteristic of the present invention generates a notch by a circular arc slit etched on the radiating element, and then can be further controlled by the arc gap Several RF-switched on-off changes the resonant length of the slot, thereby changing the resonant frequency of the antenna, realizing the on-demand reconfigurability of the notch, and finally ensuring the reconfigurable ultra-wideband single with the notch characteristic of the present invention.
  • the same UW B performance of the polar antenna achieves miniaturization of the antenna.
  • FIG. 1 is a top plan view of a reconfigurable ultra-wideband monopole antenna having a notch characteristic in a first embodiment of the present invention.
  • FIG. 2 is a longitudinal cross-sectional view showing a reconfigurable ultra-wideband monopole antenna having a notch characteristic in the first embodiment of the present invention.
  • FIG. 3 is a graph showing reflection coefficients of various state simulations of a reconfigurable ultra-wideband monopole antenna with notch characteristics in an embodiment of the present invention.
  • FIG. 4 is an optimized reconfigurable ultra-wideband monopole antenna with notch characteristics in an embodiment of the invention. [0019] FIG. Standing wave ratio curve for each state simulation.
  • the present invention proposes a first embodiment, as shown in FIGS. 1 and 2, a reconfigurable ultra-wideband monopole antenna having a notch characteristic, comprising a radiating element 1, a microstrip feeder 2, a dielectric substrate 3, and Ground plate 4.
  • the radiation unit 1 and the microstrip feed line 2 are disposed on an upper surface of the dielectric substrate 3, and the ground plate 4 is disposed on a lower surface of the dielectric substrate 3.
  • the radiation unit 1 includes an isosceles trapezoidal region 11 and an isosceles trapezoidal region.
  • the rectangular area 12 is provided with a circular arc slit 121 whose mouth is facing the lower bottom of the isosceles trapezoidal area 11, the arcuate slit 121 is related to the radiation unit 1, etc.
  • the center line of the waist trapezoidal region 11 is bilaterally symmetrical; the arc gap 1 21 is provided with a plurality of radio frequency switches (in FIG.
  • the upper bottom of the isosceles trapezoidal region 11 of the radiating element 1 is connected to the microstrip feed line 2, and the microstrip feed line 2 is bilaterally symmetric with respect to the center line of the isosceles trapezoidal region 11 of the radiating element 1;
  • the lower base of the isosceles trapezoidal region 11 of the radiation unit 1 is the same as the width of the ground plate 4.
  • the isosceles trapezoidal region 11 in the reconfigurable ultra-wideband monopole antenna having the notch characteristic of the present invention causes the radiating element 1 to have two chamfers, and the two chamfers are symmetric about the microstrip feed line 2
  • the ultra-wideband is realized; the lower bottom of the isosceles trapezoidal region 11 of the radiating element 1 is the same width as the grounding plate 4, so that the antenna of the present invention has a compact structure and stable radiation performance; further, the antenna of the present invention passes through the radiation
  • the circular arc slit 121 etched on the unit 1 generates a notch, and then the resonant length of the circular arc slit 121 is further changed by controlling a plurality of radio frequency switching openings provided on the circular arc slit 121, thereby changing the resonance of the antenna.
  • the frequency, the on-demand reconfigurability of the notch is achieved, and finally the miniaturization of the antenna is achieved while ensuring the complete UWB performance of
  • the arcuate slit 121 may be further disposed at a position where the current of the radiation unit 1 is the strongest, and the entire reconfigurable ultra-wideband monopole antenna having the notch characteristic is about the longitudinal center line thereof. Symmetrical, the antenna of the present invention has a better match.
  • the dielectric substrate 3 is a rectangular FR4 dielectric substrate having a relative dielectric constant of 4.4 and a thickness of 1.6 mm;
  • the grounding plate 4 is a copper piece; the radiating element 1, the microstrip feeding line 2, the grounding plate 4, and the circular arc slit 121 are all formed on the copper sheets on the upper and lower surfaces of the dielectric substrate 3 by etching.
  • the radiating element 1, the microstrip feed line 2, and the ground plate 4 may also be disposed on the dielectric substrate 3 by transfer.
  • the length of the microstrip feeder 2 is 15.5 mm; the shape of the chamfer of the radiating element 1 is a right-angled triangle, the two right-angled sides of the right-angled triangle are 3.5 mm and 5 mm, respectively; the radius of the arc-shaped slit 121 is 7 mm. .
  • Table 1 shows the specific operational state of the antenna of the present invention.
  • FIG. 3 shows a reflection coefficient curve of each state simulation of the reconfigurable ultra-wideband monopole antenna with the notch characteristic optimized in the above specific embodiment.
  • the antenna has good UWB performance, and the working frequency band (reflection coefficient is less than -10dB) is 3.1 ⁇ 10.7G.
  • the resonant frequency of the antenna can be changed to realize the on-demand reconfigurable of the notch; and the reconfigurable ultra-wideband monopole with the notch characteristic of the present invention
  • the matching of the antennas is better than the prior art.
  • FIG. 4 shows the standing wave ratio curve of each state of the optimized antenna.
  • the working frequency band with a standing wave ratio of less than 2 covers the operating range of the ultra-wideband, and the notch band covers 3.4 ⁇ 3.69 respectively.
  • the number and location of the radio frequency switches in the foregoing embodiments may be correspondingly designed according to specific notch requirements, and the more the number of radio frequency switches, the reconfigurable traps The more abundant the nature; in addition, when d (the distance between the upper bottom of the isosceles trapezoidal region of the radiating element and the upper edge of the ground plate) is between 0 and 2 mm, and the antenna of the present invention can be made better. Matching, d is preferably 1.5 mm.
  • the reconfigurable ultra-wideband monopole antenna with the notch characteristic of the present invention has complete UWB performance, and can change the gap by controlling several radio frequency switching on and off the arc gap.
  • the resonant length which in turn changes the resonant frequency of the antenna, enables on-demand reconfiguration of the notch, and achieves miniaturization of the antenna.
  • the isosceles trapezoidal region in the reconfigurable ultra-wideband monopole antenna having the notch characteristic of the present invention causes the radiating element to have two chamfer angles, and the two chamfers are bilaterally symmetric with respect to the microstrip feed line, Ultra-wideband; Furthermore, the reconfigurable ultra-wideband monopole antenna having the notch characteristic of the present invention generates a notch by a circular arc slit etched on the radiating element, and then can be further controlled by the arc gap Several RF-switched on-off changes the resonant length of the slot, which in turn changes the resonant frequency of the antenna, enabling the on-demand of the notch. Reconstructing, and ultimately ensuring, the complete uw of the reconfigurable ultra-wideband monopole antenna with notch characteristics of the present invention
  • the same performance of the B achieves the miniaturization of the antenna.

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Abstract

L'invention concerne une antenne unipolaire à bande ultra-large reconfigurable ayant une caractéristique de bande étroite, comprenant une unité de rayonnement, un dispositif d'alimentation en micro-bande, un substrat diélectrique et une plaque de masse, l'unité de rayonnement et le dispositif d'alimentation en microbande étant agencés sur une surface supérieure du substrat diélectrique, et la plaque de masse étant disposée sur une surface inférieure du substrat diélectrique; l'unité de rayonnement comprend une zone trapézoïdale isocèle et une zone rectangulaire ayant une largeur égale à celle d'un fond inférieur de la zone trapézoïdale isocèle et reliée à la zone trapézoïdale isocèle, et la zone rectangulaire comprend un espace d'arc dont l'ouverture fait face au fond inférieur de la zone trapézoïdale isocèle; plusieurs commutateurs radiofréquence sont disposés sur l'espace d'arc; et un fond supérieur de la zone trapézoïdale isocèle de l'unité de rayonnement est connecté au dispositif d'alimentation en microbande. L'antenne unipolaire à bande ultra-large reconfigurable ayant une caractéristique de bande étroite de la présente invention présente non seulement une performance UWB complète, mais permet également une miniaturisation d'antenne tout en obtenant une reconfigurabilité de bande étroite à la demande en même temps.
PCT/CN2017/112990 2017-01-20 2017-11-25 Antenne unipolaire ultra large bande reconfigurable à caractéristique de bande étroite WO2018133538A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710048815.0 2017-01-20
CN201710048815.0A CN106848544B (zh) 2017-01-20 2017-01-20 具有陷波特性的可重构超宽带单极天线

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108742643A (zh) * 2018-08-27 2018-11-06 天津大学 一款适用于人体血糖浓度检测的超宽带天线
CN112821077A (zh) * 2020-12-31 2021-05-18 辽宁工程技术大学 一种具有可重构特性的双陷波分形超宽带天线

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN206602179U (zh) * 2017-01-20 2017-10-31 深圳市景程信息科技有限公司 陷波可重构超宽带单极天线
CN106848544B (zh) * 2017-01-20 2019-01-15 深圳市景程信息科技有限公司 具有陷波特性的可重构超宽带单极天线
CN107706523B (zh) * 2017-11-07 2024-03-12 山西大学 一种陷波可控超宽带天线
CN111555024A (zh) * 2020-05-07 2020-08-18 宁波极位智能科技有限公司 一种阻带可重构超宽带mimo天线

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US20070229361A1 (en) * 2006-03-29 2007-10-04 Fujitsu Component Limited Antenna apparatus
CN101777691A (zh) * 2010-02-23 2010-07-14 厦门大学 开槽印制单极超宽带天线
CN103762413A (zh) * 2013-12-31 2014-04-30 电子科技大学 超宽带陷波天线
CN103855466A (zh) * 2014-03-25 2014-06-11 电子科技大学 一种具有窄陷波带宽的三阻带超宽带天线
CN106848544A (zh) * 2017-01-20 2017-06-13 深圳市景程信息科技有限公司 具有陷波特性的可重构超宽带单极天线
CN206602179U (zh) * 2017-01-20 2017-10-31 深圳市景程信息科技有限公司 陷波可重构超宽带单极天线

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Publication number Priority date Publication date Assignee Title
US20070229361A1 (en) * 2006-03-29 2007-10-04 Fujitsu Component Limited Antenna apparatus
CN101777691A (zh) * 2010-02-23 2010-07-14 厦门大学 开槽印制单极超宽带天线
CN103762413A (zh) * 2013-12-31 2014-04-30 电子科技大学 超宽带陷波天线
CN103855466A (zh) * 2014-03-25 2014-06-11 电子科技大学 一种具有窄陷波带宽的三阻带超宽带天线
CN106848544A (zh) * 2017-01-20 2017-06-13 深圳市景程信息科技有限公司 具有陷波特性的可重构超宽带单极天线
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108742643A (zh) * 2018-08-27 2018-11-06 天津大学 一款适用于人体血糖浓度检测的超宽带天线
CN108742643B (zh) * 2018-08-27 2023-10-17 天津大学 一款适用于人体血糖浓度检测的超宽带天线
CN112821077A (zh) * 2020-12-31 2021-05-18 辽宁工程技术大学 一种具有可重构特性的双陷波分形超宽带天线
CN112821077B (zh) * 2020-12-31 2023-07-14 辽宁工程技术大学 一种具有可重构特性的双陷波分形超宽带天线

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