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WO2019019027A1 - Dispositif d'antennes de mesure léger et à petite échelle - Google Patents

Dispositif d'antennes de mesure léger et à petite échelle Download PDF

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Publication number
WO2019019027A1
WO2019019027A1 PCT/CN2017/094367 CN2017094367W WO2019019027A1 WO 2019019027 A1 WO2019019027 A1 WO 2019019027A1 CN 2017094367 W CN2017094367 W CN 2017094367W WO 2019019027 A1 WO2019019027 A1 WO 2019019027A1
Authority
WO
WIPO (PCT)
Prior art keywords
tuning
metal member
saw teeth
antenna device
disposed
Prior art date
Application number
PCT/CN2017/094367
Other languages
English (en)
Chinese (zh)
Inventor
李晓鹏
李成钢
鲍志雄
黄俊铭
张华福
邓良有
莫凡
Original Assignee
广州中海达卫星导航技术股份有限公司
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 广州中海达卫星导航技术股份有限公司 filed Critical 广州中海达卫星导航技术股份有限公司
Priority to PCT/CN2017/094367 priority Critical patent/WO2019019027A1/fr
Publication of WO2019019027A1 publication Critical patent/WO2019019027A1/fr

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    • 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

Definitions

  • the present invention relates to the field of antenna technologies, and in particular, to an air medium type small and small measuring antenna device.
  • the low elevation angle gain is low, resulting in poor antenna reception performance for low angle satellite signals; although high dielectric constant medium can improve the beam.
  • Bandwidth but will cause the bandwidth of the antenna to be narrowed.
  • the conventional stacked dual-frequency antenna device is difficult to realize the lightweight and compact structure design of the antenna, and the cost is high.
  • the dielectric substrate in the conventional microstrip antenna needs to be thickened, generally reaching 6 mm to 12 mm.
  • the surface wave of the antenna surface will increase, which will affect the performance of the antenna.
  • the weight and cost of the product will increase accordingly. If the single layer medium is increased to more than 7mm, the processing difficulty and precision will become larger, and the processing cost will be high, which will also cause Product defect rate increases and geometric symmetry deteriorates.
  • the second signal receiving unit includes a metal member and a plurality of grounding members, one end of the grounding member is connected to the metal member, and the other end is extended by the metal member toward the circuit board and is grounded to the circuit board.
  • the metal member is supported and grounded on the circuit board by a plurality of the grounding members, and an air radiation medium layer is disposed between the metal member and the circuit board; the substrate is disposed on the metal member.
  • the microstrip patch layer is disposed on the substrate and shared with the metal member
  • the capacitive loading tuning unit comprises a fixing plate, a plurality of first tuning saw teeth and a plurality of second tuning saw teeth;
  • the fixing plate is disposed on the circuit board and spaced apart from the metal piece by a predetermined distance,
  • the first tuning saw teeth are evenly disposed on the outer edge of the metal member and extend perpendicularly toward the fixing plate by the metal member, and the plurality of second tuning saw teeth are evenly disposed on the fixing plate and are fixed by the fixing
  • the plate extends perpendicularly to the metal member, and the plurality of first tuning saw teeth are in one-to-one correspondence with the plurality of second tuning saw teeth and preset a certain active gap.
  • a plurality of the first tuning saw teeth are uniformly disposed circumferentially on an outer edge of the metal member and extend toward the circuit board, and the plurality of the second tuning saw teeth are uniformly disposed in the circumferential direction.
  • the outer edge of the fixing plate extends toward the metal member, and each of the first tuning saw teeth is disposed face to face with each of the second tuning saw teeth and a certain acting gap is preset between the two.
  • each of the first tuning sawtooth and each of the second tuning saw teeth are rectangular plate-shaped and may implement a triangle or a trapezoid, and each of the faces on a plane perpendicular to the central axis
  • the width of the first tuning serration in the circumferential direction of the metal member is equal to the width of each of the second tuning serrations in the circumferential direction of the fixing plate.
  • a plurality of the first tuning saw teeth are integrally formed with the metal piece, and the plurality of the second tuning saw teeth are integrally formed with the fixing plate and the multipath suppression unit sawtooth.
  • the metal member is provided with a through hole communicating with the air radiation medium layer
  • the substrate is provided with a mounting hole corresponding to the through hole, and the microstrip patch layer is disposed. In the mounting hole.
  • the outer edge of the microstrip patch layer is uniformly disposed with a plurality of outer serrations in a horizontal direction
  • the inner edge of the through hole in the metal member is uniformly disposed with a plurality of inner serrations in a horizontal direction
  • the outer serrations are disposed with a plurality of the inner serrations and the projections of the two in the vertical direction are intermeshing or preset with a certain gap.
  • each of the outer serrations is a quadrilateral structure of the outer two corners, each of the inner serrations being a trapezoidal shape that is projected in a vertical direction to engage between two adjacent outer serrations or Preset a certain gap.
  • a plurality of the grounding members are separated from the metal piece by a plurality of the inner saw teeth
  • the ends are formed to extend vertically in the direction of the board and are connected to the board ground.
  • the geometric center of the microstrip patch layer coincides with the geometric center of the metal member, and the microstrip patch layer is centrally symmetrically disposed with four first feed points, the metal There are four second feed points symmetrically arranged on the center.
  • the air radiation medium layer is shared between the first signal receiving unit and the second signal receiving unit, that is, the coplanar structure design, so that the surface of the small and small measuring antenna device does not form the surface inherent to the traditional medium interface.
  • the wave effect makes the antenna anti-interference performance even better.
  • a plurality of first tuning saw teeth on the edge of the metal piece and a plurality of second tuning saw teeth on the periphery of the fixed plate form a capacitive loading tuning network, and a plurality of first tuning saw teeth are arranged in one-to-one correspondence with the plurality of second tuning saw teeth, so that the metal can be
  • the first tuning sawtooth and the second tuning sawtooth are set as much as possible within the limited range of the fixed plate and the fixed plate, so as to improve the air-type antenna device while realizing the miniaturized structural design of the wideband GNSS measuring antenna device.
  • the performance parameters of 3dB axis ratio bandwidth, beam wideband and low elevation radiation gain, peripheral multipath suppression unit sawtooth effectively improve the multipath suppression capability of the antenna device, and are applied to the terminal device to make the measurement accuracy more accurate.
  • FIG. 1 is a schematic structural view of a light and small measuring antenna device according to an embodiment of the present invention
  • FIG. 2 is a schematic structural view of a first signal receiving unit in the light and small measuring antenna device shown in FIG. 1;
  • FIG. 3 is a schematic structural view of a second signal receiving unit in the light and small measuring antenna device shown in FIG. 1;
  • FIG. 4 is a schematic structural view of a tuning unit (capacitive loading tuning unit and multipath suppression unit sawtooth) in the light and small measuring antenna device shown in FIG. 1.
  • the lightweight measuring antenna device 100 includes a circuit board (not shown), a first signal receiving unit 10, a second signal receiving unit 30, and a tuning unit 50.
  • the second signal receiving unit 30 is disposed on the circuit board, and the first signal receiving unit 10 is disposed on the second signal receiving unit 30.
  • the tuning unit 50 is disposed on the circuit board and located at the periphery of the second signal receiving unit 30.
  • the performance parameters such as the antenna axis ratio bandwidth, the beam bandwidth, the low elevation radiation gain, and the multipath suppression capability of the small and small measurement antenna device 100 are improved.
  • the first signal receiving unit 10 is a GNSS high frequency signal receiving unit
  • the second signal receiving unit 30 is a GNSS low frequency signal receiving unit.
  • the first signal receiving unit 10 includes a substrate 11 and a microstrip patch layer 13.
  • the second signal receiving unit 30 includes a metal member 31 and a plurality of grounding members 33. One end of the plurality of grounding members 33 is connected to the metal member 31, and the other end is extended by the metal member 31 toward the circuit board and is grounded to the circuit board.
  • the metal member 31 is supported by a plurality of grounding members 33 and grounded to the circuit board, and has a layer of air radiant medium between the metal member 31 and the circuit board.
  • a fixing hole 110 is defined in the substrate 11, and the first signal receiving unit 10 is fixedly coupled to the metal member 31 by a non-metallic bolt.
  • the microstrip patch layer 13 is disposed on the substrate 11 and shares the air radiating medium layer with the metal member 31. This can effectively suppress the surface wave effect of the small and small measuring antenna device 100, thereby ensuring the performance index of the small and small measuring antenna device 100. Moreover, the lightweight and compact structure design of the lightweight measuring antenna device 100 is realized.
  • the metal member 31 is a metal foil having a circular outer edge and an extended serration is added to the periphery. Compared with the original double-layer microstrip patch antenna, the ordinary metal foil is used as a radiator, which is easy to form, and The process is simple because it does not involve metallized vias of ordinary microstrip antennas.
  • the substrate 11 is disposed on the metal member 31 and has a thickness of 1mm round PTFE PC board.
  • the geometric center of the microstrip patch layer 13 coincides with the geometric center of the metal member 31.
  • the first micro feed point 13 is symmetrically disposed on the microstrip patch layer 13 for feeding the received high frequency signals to respective corresponding coupling networks and low noise amplifying circuit synthesis processing.
  • Four metal feed points 310 are symmetrically disposed on the metal member 31 for feeding the received low frequency signals to respective corresponding coupling networks and low noise amplifying circuit synthesis processes.
  • the four first feeding points 130 and the four second feeding points 310 are symmetric with the same center center, and the four second feeding points 310 are located at the periphery of the four first feeding points 130, thereby effectively improving the light and small
  • the phase center stability of the antenna device 100 is measured.
  • the metal member 31 is provided with a through hole 312 communicating with the air radiant medium layer.
  • the inner edge of the through hole 312 is uniformly provided with a plurality of inner serrations 313 in the horizontal direction.
  • a plurality of grounding members 33 are formed by a plurality of inner serrations 313 extending away from the end of the metal member 31 toward the circuit board and connected to the circuit board.
  • a mounting hole 112 matching the through hole 312 is formed in the substrate 11, and the microstrip patch layer 13 is matchedly mounted in the mounting hole 112.
  • the outer edge of the microstrip patch layer 13 is uniformly provided with a plurality of outer serrations 113 in the horizontal direction.
  • a plurality of outer serrations 113 are interdigitated with a plurality of inner serrations 313 and their projections in the vertical direction are intermeshing or presetting a certain play gap.
  • the high-frequency receiving unit and the low-frequency signal receiving unit cross the "coplanar" on the vertical projection surface, and the compact and small-sized structure of the lightweight measuring antenna device 100 can be realized.
  • each of the outer serrations 113 is a quadrilateral structure of the outer two corners
  • each of the inner serrations 313 is a trapezoidal or preset with a projection in the vertical direction between the adjacent two outer serrations 113. A certain role gap.
  • the tuning unit 50 includes a fixing plate 51, a plurality of first tuning saw teeth 53 and a plurality of second tuning saw teeth 55 and multipath suppression unit saw teeth 56.
  • the fixing plate 51 is disposed on the circuit board, and the plurality of first tuning teeth 53 are evenly disposed on the metal member 31 and extend from the metal member 31 toward the fixing plate 51.
  • the plurality of second tuning teeth 55 are evenly disposed on the fixing plate 51 and fixed by the fixing plate 51.
  • the plate 51 extends in the direction of the metal member 31.
  • the plurality of first tuning serrations 53 are in one-to-one correspondence with the plurality of first tuning serrations 53.
  • the plurality of multi-path suppression unit serrations 56 are evenly disposed on the fixing plate 51 and are oriented by the fixing plate 51 toward the metal member 31. Extended, evenly symmetrically distributed with respect to the central axis.
  • the fixing plate 51 is a hollow circular plate shape disposed on the circuit board, wherein the hollow portion and the through hole 312 connected.
  • a plurality of first tuning serrations 53 are circumferentially disposed on the outer edge of the metal member 31 and extend downward in the direction of the circuit board.
  • a plurality of second tuning serrations 55 are uniformly disposed circumferentially on the outer edge of the fixing plate 51 and extend upward in the direction of the metal member 31.
  • a plurality of second tuning serrations 55 are evenly distributed around the periphery of the plurality of first tuning serrations 53.
  • Each of the first tuning serrations 53 is disposed face to face with each of the second tuning serrations 55 (as shown in FIG. 1) with a coupling gap therebetween.
  • each of the first tuning serrations 53 with respect to each of its opposing second tuning serrations 55 in a direction parallel to the fixed plate 51 coincides with each other.
  • the plurality of multipath suppression unit serrations 56 are evenly disposed on the fixing plate 51 and extend from the fixing plate 51 toward the metal member 31, are uniformly symmetrically distributed with respect to the central axis, and are radially interlaced with the second tuning serrations 55.
  • the plurality of first tuning serrations 53 and the plurality of second tuning serrations 55 are both rectangular plates.
  • the first tuning serrations 53 are integrally formed with the metal member 31, and the plurality of second tuning serrations 55 and the multi-path suppression unit serrations 56 are integrally formed with the fixing plate 51.
  • the fixing plate 51 and the plurality of second tuning serrations 55 and multipath suppression unit serrations 56 disposed thereon are all made of metal.
  • the air type measuring antenna device 100 has the following advantages:
  • the air radiation medium layer is shared between the first signal receiving unit 10 and the second signal receiving unit 30, so that the surface of the air type measuring antenna device 100 does not form a surface wave, thereby making the antenna performance better.
  • a plurality of first tuning serrations 53 at the edge of the metal member 31 and a plurality of second tuning serrations 55 on the periphery of the fixing plate 51 constitute a capacitive loading tuning network, and the first tuning teeth 53 and the plurality of second tuning saw teeth 55 are face-to-face ones.
  • the first tuning serrations 53 and the second tuning serrations 55 can be disposed as much as possible within the limited area of the metal member 31 and the fixing plate 51 to achieve a miniaturized structure of the air-type antenna device 100.
  • the performance parameters such as the axial specific bandwidth, the beam wideband and the low elevation radiation gain of the air-type antenna device 100 are improved, and the plurality of multi-path suppression unit saw teeth 56 disposed on the periphery of the fixed plate 53 effectively improve the multipath suppression capability of the antenna device. It is applied to terminal equipment to make measurement accuracy more accurate.
  • the low frequency signal receiving device (metal member 31) and the peripheral tuning unit 50 in the second signal receiving unit 30 are both made of metal members (generally 0.2 mm to 1 mm thick), and the microstrips received by the high frequency signal are received.
  • the patch layer 13 is fixed by a polytetrafluoroethylene plate having a thickness of 1 mm, and the air is used as a high-low frequency signal receiving unit to share the radiation medium layer, compared with the conventional high-frequency material (substrate of the microstrip antenna). There is no surface wave interference effect inherent in traditional media interfaces and low cost.
  • the metal member 31 of the second signal receiving unit 30 adopts a common metal foil as a radiator, is easy to form, and is simple in processing and is not subject to a circuit board because it does not involve a metallized via hole of an ordinary microstrip antenna. With the effect of processing thickness, it is easy to make a thicker air type measuring antenna device 100 (the thicker the wider the bandwidth, the better the performance).

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Abstract

L'invention concerne un dispositif d'antennes de mesure léger et à petite échelle comprenant une première unité réceptrice de signaux, une deuxième unité réceptrice de signaux, une carte de circuit imprimé et une unité de réglage, la première unité réceptrice de signaux comprenant un substrat et une couche de plaque à microrubans ; la deuxième unité réceptrice de signaux comprenant un organe en métal et un organe de masse ; l'organe de métal étant connecté à la carte de circuit imprimé par le biais de l'organe de masse, le substrat étant agencé sur l'organe de métal, et la couche de plaque à microrubans étant agencée sur le substrat et partageant une couche diélectrique de rayonnement dans l'air avec l'organe de métal ; l'unité de réglage comprenant une plaque fixe, de premières dents de scie de réglage, plusieurs deuxièmes dents de scie de réglage et plusieurs dents de scie de réglage inhibiteur de chemins multiples ; et la plaque fixe étant agencée sur la carte de circuit imprimé, les premières dents de scie de réglage étant agencées uniformément sur l'organe de métal, et les deuxièmes dents de scie de réglage correspondant aux premières dents de scie de réglage sur une base biunivoque. Selon la présente invention, les premières dents de scie de réglage sont agencées pour correspondre aux deuxièmes dents de scie sur une base biunivoque, de sorte qu'autant des premières dents de scie de réglage et des deuxièmes dents de scie de réglage que possible sont agencées dans une aire limitée afin de mieux améliorer des paramètres de performance de type largeur de bande de ratio axial, largeur de bande de faisceau et gain de rayonnement à faible élévation tout en atteignant une structure à petite échelle ; et les dents de scie périphériques d'unité inhibitrice de chemins multiples pouvant inhiber efficacement l'effet de chemins multiples d'un dispositif d'antennes, assurant ainsi une qualité de signaux plus précise.
PCT/CN2017/094367 2017-07-25 2017-07-25 Dispositif d'antennes de mesure léger et à petite échelle WO2019019027A1 (fr)

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PCT/CN2017/094367 WO2019019027A1 (fr) 2017-07-25 2017-07-25 Dispositif d'antennes de mesure léger et à petite échelle

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PCT/CN2017/094367 WO2019019027A1 (fr) 2017-07-25 2017-07-25 Dispositif d'antennes de mesure léger et à petite échelle

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113224522A (zh) * 2021-05-06 2021-08-06 上海海积信息科技股份有限公司 一种gnss天线

Citations (5)

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Publication number Priority date Publication date Assignee Title
WO2007006773A1 (fr) * 2005-07-12 2007-01-18 The European Gnss Supervisory Authority Antenne multibandes pour systeme de positionnement par satellite
CN102842762A (zh) * 2012-08-29 2012-12-26 扬州宝军苏北电子有限公司 城垛式抗多径多馈源双频宽波束稳定相位中心天线
CN104409842A (zh) * 2014-11-27 2015-03-11 广州中海达卫星导航技术股份有限公司 单层宽带gnss测量型天线
CN204257814U (zh) * 2014-11-27 2015-04-08 广州中海达卫星导航技术股份有限公司 轻型宽带gnss测量型天线
CN105024157A (zh) * 2015-08-20 2015-11-04 广州中海达卫星导航技术股份有限公司 空气测量型天线装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007006773A1 (fr) * 2005-07-12 2007-01-18 The European Gnss Supervisory Authority Antenne multibandes pour systeme de positionnement par satellite
CN102842762A (zh) * 2012-08-29 2012-12-26 扬州宝军苏北电子有限公司 城垛式抗多径多馈源双频宽波束稳定相位中心天线
CN104409842A (zh) * 2014-11-27 2015-03-11 广州中海达卫星导航技术股份有限公司 单层宽带gnss测量型天线
CN204257814U (zh) * 2014-11-27 2015-04-08 广州中海达卫星导航技术股份有限公司 轻型宽带gnss测量型天线
CN105024157A (zh) * 2015-08-20 2015-11-04 广州中海达卫星导航技术股份有限公司 空气测量型天线装置

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Title
LI, XIAOPENG ET AL.: "A Single Air Medium Layer GNSS Measuring Antenna Device", ELECTRONICS WORLD, 15 August 2014 (2014-08-15) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113224522A (zh) * 2021-05-06 2021-08-06 上海海积信息科技股份有限公司 一种gnss天线

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