EP2664030B1 - Antenne directive imprimee de type fente et systeme mettant en reseau plusieurs antennes directives imprimees de type fente - Google Patents

Antenne directive imprimee de type fente et systeme mettant en reseau plusieurs antennes directives imprimees de type fente Download PDF

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Publication number
EP2664030B1
EP2664030B1 EP11802519.6A EP11802519A EP2664030B1 EP 2664030 B1 EP2664030 B1 EP 2664030B1 EP 11802519 A EP11802519 A EP 11802519A EP 2664030 B1 EP2664030 B1 EP 2664030B1
Authority
EP
European Patent Office
Prior art keywords
substrate
substrates
antenna
slot
antennas
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.)
Not-in-force
Application number
EP11802519.6A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2664030A1 (fr
Inventor
Dominique Lo Hine Tong
Ali Louzir
Philippe Minard
Jean-François PINTOS
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.)
Thomson Licensing SAS
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Thomson Licensing SAS
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Filing date
Publication date
Application filed by Thomson Licensing SAS filed Critical Thomson Licensing SAS
Publication of EP2664030A1 publication Critical patent/EP2664030A1/fr
Application granted granted Critical
Publication of EP2664030B1 publication Critical patent/EP2664030B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
    • H01Q21/20—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a curvilinear path
    • 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
    • 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
    • H01Q13/08—Radiating ends of two-conductor microwave transmission lines, e.g. of coaxial lines, of microstrip lines
    • 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
    • H01Q13/08—Radiating ends of two-conductor microwave transmission lines, e.g. of coaxial lines, of microstrip lines
    • H01Q13/085—Slot-line radiating ends
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
    • H01Q21/20—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a curvilinear path
    • H01Q21/205—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a curvilinear path providing an omnidirectional coverage
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
    • H01Q21/26—Turnstile or like antennas comprising arrangements of three or more elongated elements disposed radially and symmetrically in a horizontal plane about a common centre

Definitions

  • the present invention relates to slot type printed directional antennas, in particular Vivaldi type antennas. They also relate to different systems that network said slot-type printed antennas so as to produce compact multibeam antenna systems that may also have orthogonal double polarization.
  • MIMO multiple input multiple output in English
  • RF radio frequency
  • the use of directional antennas by rejecting the interference upstream of the reception chain, makes it possible in a MIMO system to reduce the complexity related to the management of the nonlinearities, the noise and the dynamics of the radio channel. frequency.
  • a solution based on directional antennas also makes it possible to simplify the processing of the digital signal, in particular the additional processing related to the cancellation of the signals interfering in the case of a MIMO solution using non-directive antennas.
  • the directional antennas are generally cumbersome and the networking of several directional antennas greatly increases this problem.
  • the printed guideline antennas are known flared slot type antennas such as Vivaldi type antennas.
  • Antennas of this type have the advantage of great flexibility in terms of directivity value. Indeed this value is fixed by the length of the profile and the width of the mouth.
  • these antennas also have great flexibility as regards the shape of the radiation pattern, the openings in the planes E and H can be adjusted by adjusting the shape and length of the profile and the opening of the mouth.
  • these antennas have a natural linear polarization, the direction of polarization being given by the plane of the substrate on which the antenna is etched.
  • the present invention therefore seeks to reduce the size and volume of the systems described above by a factor of about two.
  • the subject of the present invention is a printed directional antenna of the flared slot type comprising a substrate provided with a ground plane in which the slot is etched in a profile having a longitudinal axis and a line for feeding the slot, in wherein the substrate comprises at least first and second portions bent along an axis parallel and non-collinear with said axis and forming an angle A with respect to each other, a first portion of the profile of the slot being etched in the first portion of the substrate and a second portion of the slot profile being etched in the second portion of the substrate.
  • the angle is 90 °, that is, the two substrate portions are perpendicular to each other.
  • the ground plane is formed on a lower or outer face of said first and second parts of the substrate.
  • the present invention also relates to a printed slot-like printed directional antenna system comprising a first substrate and N second substrates, the N second substrates forming an angle A with respect to the first substrate, the first and the N second substrates delimiting N sectors, in which, in at least one of the sectors, is realized a directional antenna as described above, the first portion being formed by the first substrate and the second portion being formed by one of the second substrates.
  • the present invention also relates to a flared slot type printed directional antenna system comprising a first substrate, a third substrate and N second substrates, the N second substrates forming an angle A with respect to the first substrate and an angle B with respect to the third substrate, the first substrate, the third substrate and the N second substrates delimiting N sectors, wherein, in at least one of even or odd-rank sectors, a directional antenna as described above is formed, the first part being formed by the first substrate and the second part being formed by one of the second substrates and in at least one of odd or even rank sectors is formed a directional antenna as described above the first part being formed by the third substrate and the second part being formed by one of the second substrates.
  • angles A and B are equal to 90 ° so that the first and third substrates are perpendicular to the N second substrates.
  • the invention relates to a flared slot type printed directional antenna system
  • a flared slot type printed directional antenna system comprising a first substrate, a third substrate, the first and third substrates being of polygonal shape, and N second substrates, N corresponding to the number sides of the polygon, the N second substrates connecting the first substrate to the third substrate, wherein, at at least one of the connections between the first substrate or the third substrate and one of the second substrates, a directional antenna such as described above.
  • FIG. 1 a particular embodiment of a flared slot type directional printed antenna according to the present invention.
  • the slot antenna described in this embodiment is a Vivaldi type antenna.
  • the present invention can be applied to other types of flared slot antennas known as "tapered slot antennas" in the English language.
  • the antenna according to the present invention comprises a substrate-forming element consisting of a first substrate part 1 and a second substrate part 2 which, in the embodiment shown, are arranged perpendicularly to each other. other. More generally, the two parts 1 and 2 of the substrate can be folded along an axis OY and form between them an angle A different from 90 °. In general, the two substrate parts are formed by independent substrates and in the description of the substrate part or substrate have the same meaning.
  • an excitation micro-ribbon line 3 which is extended by a first part of the adaptation line 4a allowing the slot antenna to be powered by coupling electromagnetic, especially according to the Knorr principle.
  • a ground plane 5 On the underside of the first portion 1 of the substrate is a ground plane 5 in which is etched a portion 6 of the profile of the slot antenna.
  • the second part 8 of the profile of the antenna On the rear face of the second part 2 of the substrate is etched in the ground plane 7 the second part 8 of the profile of the antenna which is extended by a slot 9 ending in a short circuit 10.
  • the Vivaldi slot antenna is powered by electromagnetic coupling according to Knorr's known principle.
  • the rear face 5 of the first substrate portion 1 and the rear face 7 of the second substrate portion 2 are electrically connected.
  • the folding line OY between the first part 1 of the substrate and the second part 2 of the substrate is not made along the axis ss' of the slot 9 of the antenna Vivaldi but parallel and close to said axis.
  • a slot-type planar antenna in particular a Vivaldi antenna, naturally has a linear polarization, the direction of the polarization being given by the antenna plane. So according to this new concept where the antenna is folded in two planes, usually orthogonal as represented in the figure 1 this results in an oblique polarization at approximately 45 ° approximately along a plane connecting the two ends of the mouth of the antenna and collinear with the axis Y, longitudinal axis of symmetry.
  • this system comprises a first horizontal substrate 10 and two second vertical substrates 11a and 11b, interconnected along a common axis OZ and forming an angle C between them of 45 °.
  • ground planes 12a and 12b are formed on the outer surfaces of the substrates 11a and 11b in which a first portion of the Vivaldi antenna is etched as shown in FIG. figure 1 .
  • the second part of the Vivaldi type antenna is etched on the ground plane made on the underside of the first horizontal substrate 10 in the sector 10a.
  • each antenna has a polarization in a different sense.
  • One of the antennas has a horizontal profile on the right with respect to the vertical substrate 11a and the other antenna has a horizontal profile on the left with respect to the vertical substrate 11b. This results in an orthogonality of the polarizations, which allows a better decorrelation of the antennas.
  • FIG. figure 1 another embodiment of a system comprising four Vivaldi type antennas as represented in FIG. figure 1 .
  • the system comprises a first horizontal substrate 20 on which are fixed perpendicularly four second substrates 21a, 21b, 21c, 21d interconnected along a common axis OZ. These four second substrates delimit four sectors 20a, 20b, 20c and 20d on the first substrate.
  • antennas type Vivaldi folded, as in the embodiment of the figure 1 were performed on each second substrate (21a, 21b, 21c, 21d) and the horizontal substrate (20) as shown in FIG. figure 3 .
  • the antennas are associated in pairs so that part of the antennas is etched in the sectors 20a and 20c of the first substrate as shown in FIG. Figure 4 (b) .
  • the second antenna parts are etched on the surfaces of the second substrates external to these sectors, namely in the metallizations 22a, 22b, 22c, 22d made on the second substrates 21a, 21b, 21c, 21d.
  • the supply lines 23a, 23b and the lines not shown for the sector 20c are formed on the inner faces of the sectors of the second substrates concerned.
  • FIG. 5a and 5b another embodiment of an antenna system according to the present invention for obtaining better insulation between the antennas.
  • a third substrate parallel to the first substrate is used. More specifically, on Figures 5a and 5b there is shown an antenna system with eight antennas comprising a first horizontal substrate 30 on which are mounted perpendicularly eight second substrates 31a, 31b, 31c, 31d, 31e, 31f, 31g, 31h interconnected along an axis OZ and a third horizontal substrate 32 parallel to the first substrate 30. This set determines eight sectors referenced a, b, c, d, e, f, g, h.
  • the substrates 30 and 32 could be made without being parallel, the N second substrates making an angle A with respect to the first substrate 30 and an angle B with respect to the third substrate 32.
  • Vivaldi printed directional antennas as shown in FIG. figure 1 were used. The antennas are respectively formed between the first substrate and one of the second substrates for the sectors of even rank, for example, and between the third substrate and one of the second substrates for odd-ranked sectors or vice versa.
  • the printed directional antenna is made in the ground plane 33 of the third substrate 32 and in the ground plane 34 of the second substrate 31a and is fed by the feed line 35, whereas, as shown in FIG. figure 5a for the sector h delimited by the second substrates 31a and 31h, the printed directive antenna is etched in the ground plane 37 of the substrate 30 and in the ground plane 36 of the second substrate 31h and is fed by the line 38.
  • the present invention makes it possible to obtain a multibeam antenna system that is much more compact in height than the systems of the prior art described in particular in the patents mentioned above.
  • the arrangement of the antenna profiles is carried out so as to maintain the orthogonality of the polarizations of the antennas, the excitations of the antennas being on the same side of the vertical substrates as shown in the figures.
  • the six-antenna system comprises a first substrate 40, six second substrates 41a, 41b, 41c, 41d, 41e, 41f and a third substrate 42, the substrates 40 and 42 being parallel to one another and the six second substrates being interconnected along an axis OZ and perpendicular to the first and third substrates.
  • the six antennas are distributed alternately on the horizontal planes 40 and 42 and on the vertical planes around the OZ axis and the angular pitch between two vertical planes formed by the second substrates is 60 °. So more precise a Vivaldi antenna according to the present invention is therefore made in each odd sector using the first substrate 40 and for each even sector using the second substrate 42. There is therefore a first antenna etched in the ground plane 43.1 of the first substrate 40 and the ground plane 44.1 of the second substrate 41a and fed by the feed line 45.1.
  • the second antenna is made by etching the ground plane 43.2 on the third substrate 42 and the ground plane 44.2 on the second substrate 41b and then alternatively for the ground plane 43.3 of the first substrate 40 and the ground plane 44.3 on the second substrate 41c, 43.4 of the third substrate 42 and the ground plane 44.4 on the second substrate 41d, 43.5 of the first substrate 40 and the ground plane 44.5 on the second substrate 41e and 43.6 of the third substrate 42 and the ground plane 44.6 on the second substrate 41f.
  • all of the antennas are powered separately as represented by the supply lines 45.1, 45.2, 45.3, 45.4, 45.5, 45.6 on the Figure 7 .
  • Substrates 40 and 42 are circular shaped substrates with a diameter of 88 millimeters and the six second substrates 41 a to 41f have a rectangular shape with a height of 22 millimeters and a width of 33 millimeters.
  • the results of the electromagnetic simulations are represented on the Figures 8 to 11 .
  • the figure 8 represents the adaptation and isolation curves. There is therefore an adaptation of more than 15 dB in the 802.11a WiFi band, namely the band between 5.15-5.85 GHz. There is also isolation between two contiguous antennas of more than 20 dB.
  • the Figures 9 and 10 represent the gain and the directivity of the antennas respectively carried out on the first substrate 40 figure 9 or on the third substrate 42 figure 10 . The curves therefore show a directivity greater than 5 dBi and a gain greater than 4 dBi whatever the type antenna.
  • the figure 11 represents the radiation pattern respectively of an antenna made with the first substrate and an antenna made with the third substrate, there is therefore a maximum of fields on two oblique planes oriented 45 ° with respect to the two planes of the antennas formed by first substrate 40 or third substrate 42.
  • the first substrate 50 and the third substrate 52 parallel to the first substrate are both constituted by rectangles and the second substrates 51a, 51b, 51c, 51d form the faces of a rectangular parallelepiped.
  • the edges of the parallelepiped are used. More precisely, a first antenna is produced by etching the ground plane 53 provided on the face 51a of one of the second substrates and the ground plane 54 provided on the first substrate 50, whereas a second antenna is made of etching the ground plane 53.2 provided on the upper part of the second substrate 51 a and the ground plane 54.2 provided on the third substrate 52.
  • a set of two antennas of this type is produced on each second substrate 51 b, 51 c, 51 d as represented on the figure 12 , thus giving a four-sector antennal system and eight Vivaldi-type printed directive antennas, each pair of antennas in a given sector having orthogonal polarizations.
  • the first portion of substrate or first substrate 60 has along the axis XX 'forming a fold, a number of holes 62 metallized.
  • This portion of substrate 60 is provided in a known manner with a metallization 62 in which is formed the profile 63 of the Vivaldi type antenna part.
  • a feed line 64 On the upper face of the portion 60 is also metallized a feed line 64 as described with reference to the figure 1 .
  • the second substrate portion or second substrate 65 is provided with a number of metallized pins 66, the number and shape of the pins 66 corresponding to the number and shape of the holes 61. Moreover, on this second part 65 is made the other part of the profile of the Vivaldi type antenna etched in a metallization 67. The other face of the part 65 receives the extension of the feed line 64 as described with reference to the figure 1 . In this case, the folded antenna structure is easily obtained by inserting the portion 65 provided with pins 66 in the metallized holes 62 of the portion 60.

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  • Variable-Direction Aerials And Aerial Arrays (AREA)
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EP11802519.6A 2011-01-13 2011-11-30 Antenne directive imprimee de type fente et systeme mettant en reseau plusieurs antennes directives imprimees de type fente Not-in-force EP2664030B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1150272A FR2970603A1 (fr) 2011-01-13 2011-01-13 Antenne directive imprimee de type fente et systeme mettant en reseau plusieurs antennes directives imprimees de type fente
PCT/FR2011/052822 WO2012095571A1 (fr) 2011-01-13 2011-11-30 Antenne directive imprimee de type fente et systeme mettant en reseau plusieurs antennes directives imprimees de type fente

Publications (2)

Publication Number Publication Date
EP2664030A1 EP2664030A1 (fr) 2013-11-20
EP2664030B1 true EP2664030B1 (fr) 2015-10-21

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP11802519.6A Not-in-force EP2664030B1 (fr) 2011-01-13 2011-11-30 Antenne directive imprimee de type fente et systeme mettant en reseau plusieurs antennes directives imprimees de type fente

Country Status (7)

Country Link
US (1) US20130285865A1 (enrdf_load_stackoverflow)
EP (1) EP2664030B1 (enrdf_load_stackoverflow)
JP (1) JP2014507858A (enrdf_load_stackoverflow)
KR (1) KR20140004714A (enrdf_load_stackoverflow)
CN (1) CN103597661A (enrdf_load_stackoverflow)
FR (1) FR2970603A1 (enrdf_load_stackoverflow)
WO (1) WO2012095571A1 (enrdf_load_stackoverflow)

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GB2531082B (en) * 2014-10-10 2018-04-04 Kathrein Werke Kg Half-ridge horn antenna array arrangement
CN105680154B (zh) * 2014-11-20 2019-01-04 中国航空工业集团公司雷华电子技术研究所 一种可重构相控阵天线模块
US9577330B2 (en) * 2014-12-30 2017-02-21 Google Inc. Modified Vivaldi antenna with dipole excitation mode
CN106129593B (zh) * 2016-06-06 2018-10-02 合肥工业大学 一种二维宽角度扫描的全金属相控阵雷达天线单元
CN106450702B (zh) * 2016-11-23 2019-10-18 上海无线电设备研究所 一种宽带双线极化锥削槽天线
KR101952208B1 (ko) * 2017-06-29 2019-02-26 홍익대학교 산학협력단 힌지를 이용하여 편파 특성을 변경할 수 있는 안테나
JP6401835B1 (ja) * 2017-08-07 2018-10-10 株式会社ヨコオ アンテナ装置
JP6810004B2 (ja) * 2017-09-05 2021-01-06 Kddi株式会社 アンテナ装置
TWI677133B (zh) * 2018-03-22 2019-11-11 國立交通大學 天線之信號線轉換結構
CN111987448B (zh) * 2020-09-18 2022-08-12 上海无线电设备研究所 一种双极化Vivaldi天线
CN113540824B (zh) * 2021-07-02 2025-06-03 中国船舶集团有限公司第七二四研究所 一种60°斜极化超宽带低剖面阵列天线单元
TWI822148B (zh) * 2022-06-28 2023-11-11 國立臺北科技大學 穿戴式裝置的無線通訊天線
CN115224467B (zh) * 2022-08-03 2023-07-25 荣耀终端有限公司 包括天线的可折叠电子设备

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Also Published As

Publication number Publication date
US20130285865A1 (en) 2013-10-31
FR2970603A1 (fr) 2012-07-20
KR20140004714A (ko) 2014-01-13
EP2664030A1 (fr) 2013-11-20
JP2014507858A (ja) 2014-03-27
WO2012095571A1 (fr) 2012-07-19
CN103597661A (zh) 2014-02-19

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