WO2025082580A1 - Élément d'antenne à double polarisation, réseau d'antennes et système d'antenne multibande - Google Patents

Élément d'antenne à double polarisation, réseau d'antennes et système d'antenne multibande Download PDF

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Publication number
WO2025082580A1
WO2025082580A1 PCT/EP2023/078643 EP2023078643W WO2025082580A1 WO 2025082580 A1 WO2025082580 A1 WO 2025082580A1 EP 2023078643 W EP2023078643 W EP 2023078643W WO 2025082580 A1 WO2025082580 A1 WO 2025082580A1
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WIPO (PCT)
Prior art keywords
planar
antenna element
antenna
feed
radiators
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.)
Pending
Application number
PCT/EP2023/078643
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English (en)
Inventor
Muhammad Imtiaz
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Telefonaktiebolaget LM Ericsson AB
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Telefonaktiebolaget LM Ericsson AB
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Priority to PCT/EP2023/078643 priority Critical patent/WO2025082580A1/fr
Publication of WO2025082580A1 publication Critical patent/WO2025082580A1/fr
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

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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
    • H01Q1/12—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
    • H01Q1/246—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for base stations
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
    • 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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
    • H01Q25/001—Crossed polarisation dual 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
    • H01Q5/40—Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements
    • H01Q5/42—Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements using two or more imbricated arrays

Definitions

  • Dual-polarization antenna element, antenna array and multi-band antenna system Dual-polarization antenna element, antenna array and multi-band antenna system
  • the present disclosure is directed to a dual-polarization antenna element, an antenna array and a multi-band antenna system.
  • cellular technology may require multiple antenna arrays, each comprising a plurality of antenna elements, to be installed at a given site to cover a variety of cellular frequency bands. This may result in antenna masts being cluttered with multiple separate antenna arrays housed under respective antenna radomes, thereby also complicating installation and maintenance.
  • One solution lies in combining multiple antenna arrays supporting different frequency bands under a common antenna radome to reduce the required installation room on an antenna mast.
  • antenna elements that can be manufactured at low cost and are still highly efficient in their operating environment may be desirable.
  • a dual-polarization antenna element for an antenna array comprises at least one radiator comprising a piece of sheet metal including ⁇ i ⁇ a feed portion and ⁇ ii ⁇ a radiation portion comprising a first planar radiation section that is aligned oblique to a main radiation direction of the antenna element.
  • the first planar radiation section is configured to extend at least partially at a first height above the reflector surface.
  • the antenna element further comprises a support structure configured to position the feed portion of the at least one radiator at a second height above a reflector surface which second height is smaller than the first height.
  • the antenna element may be configured as a directional antenna element.
  • the main radiation direction of the antenna element may be perpendicular to the first polarization direction and perpendicular to the second polarization direction.
  • the main radiation direction of the antenna element may correspond to a direction of a main lobe associated with the antenna element.
  • the main lobe may be associated with electromagnetic radiation emitted by the at least one radiator when the at least one radiator is fed with a feeding signal.
  • the first planar radiation section may (e.g., be configured to) extend at an acute angle relative to the main radiation direction.
  • the first height may correspond to a maximum height of the first planar radiation section and/or the radiation portion and/or the at least one radiator above the reflector surface.
  • the second height may correspond to a minimum height of the first planar radiation section and/or the radiation portion and/or the at least one radiator above the reflector surface.
  • the first planar radiation section may be configured to extend away from the reflector surface (e.g., and from the feed portion).
  • the first planar radiation section may be configured to extend upwards (e.g., from the feed portion).
  • the at least one of the radiators may be formed of the piece of sheet metal.
  • the at least one of the radiators may consist of the piece of sheet metal.
  • the piece of sheet metal may be a bent and/or stamped piece of sheet metal.
  • the piece of sheet metal may form only the feed portion and the radiation portion.
  • the support structure may be configured to position the feed portions of two or more of the at least one radiator at different second heights. That is, the second height may differ between different radiators of the at least one radiator.
  • the antenna element may be configured such that two or more of the at least one radiator are arranged at different heights (e.g., above the reflector surface and/or along the main radiation direction) relative to one another.
  • feed sections of the feed portions and/or (e.g., the first planar radiation sections of) radiation portions of two or more of the at least one radiator may be (e.g., configured to be) arranged at different heights relative to one another (e.g., by the support structure).
  • the radiator may be configured as a multi-polarization radiator, for example as dualpolarization radiator.
  • the at least one radiator may comprise or consist of a first pair of radiators associated with a first polarization direction and a second pair of radiators associated with a second polarization direction differing from the first polarization direction.
  • the first pair of radiators may be configured as a first dipole (e.g., capable of emitting (e.g., linearly polarized) electromagnetic radiation having the first polarization direction) and the second pair of radiators may be configured as a second dipole (e.g., capable of emitting (e.g., linearly polarized) electromagnetic radiation having the second polarization direction).
  • the radiators of the first pair of radiators may be arranged along the first polarization direction whereas the radiators of the second pair of radiators may be arranged along the second polarization direction.
  • the antenna element may be configured as a cross-polarization antenna element.
  • the first polarization direction may be orthogonal to the second polarization direction.
  • the support structure may be configured to position the feed portions of the radiators of the first pair at a similar second height and/or the feed portions of the radiators of the second pair at a similar second height.
  • the second height may be specific for the pair of radiators.
  • the second height may differ between the two pairs of radiators.
  • the first planar radiation sections of two or more of the at least one radiator may extend at least partially at a similar first height.
  • the first height may be similar for two or more of the at least one radiator.
  • the first height may differ between two or more of the at least one radiator.
  • the first (e.g., pairspecific) height may differ between the two pairs of radiators.
  • the first planar radiation sections of the radiators of the first pair may be configured to extend (e.g., from the feed portion of the respective radiator) up to the first (e.g., maximum) height and the first planar radiation sections of the radiators of the second pair may be configured to extend (e.g., from the feed portion of the respective radiator) up to another first (e.g., maximum) height.
  • the (e.g., first planar radiation sections of the) radiation portions of the radiators may each be configured to extend (e.g., from the feed portion of the respective radiator) a similar distance along a common direction (e.g., the main radiation direction and/or the height direction).
  • the first planar radiation section may be configured to extend from the second height (e.g., the similar distance) to the first height.
  • the at least one radiator may consist of the feed portion and the radiation portion.
  • the feed portion may comprise or consist of a planar feed section. The entire feed portion may be planar.
  • the (e.g., planar) feed portion and/or the planar feed section may be configured to receive a signal from a feed line and/or transmit a signal to the feed line.
  • the feed line may be electrically connected to the (e.g., planar) feed portion and/or the planar feed section, for example via a soldered or a capacitive connection.
  • the planar feed section is (e.g., be configured to be) aligned oblique to the first planar radiation section and/or perpendicular to the main radiation direction and/or parallel to the reflector surface.
  • the first planar radiation section of a first one of the at least one radiator may be mirror-sym metrically and/or rotation-symmetrically arranged relative to the first planar radiation section of a second one of the at least one radiator (e.g., a radiator in the same pair of radiators).
  • the (e.g., first planar radiation section and/or feed portion of the) radiators of the antenna element may be rotation-symmetrically arranged relative to one another (e.g., around an axis of symmetry parallel to or corresponding to the main radiation direction of the antenna element).
  • the first planar radiation section of a first one of the at least one of the radiators may be nonparallel to the first planar radiation section of a second one of the at least one of the radiators.
  • all first planar radiation sections of the radiators of the antenna element lie in different, non-parallel planes.
  • Surfaces of the first planar radiation sections of the radiators of a radiator pair may be arranged to face one another.
  • the first planar radiation sections of the radiators of a radiator pair may be arranged to form an angle relative to one another, the angle lying in a plane in which the polarization direction of the radiators of that radiator pair and the main radiation direction of the antenna element are situated.
  • An (e.g., pair-specific) oblique angle between the planar feed section and the first planar radiation section may be similar for the radiators of a radiator pair.
  • the piece of sheet metal may be bent.
  • the piece of sheet metal may be bent at least along a first (e.g., straight) bending line.
  • the planar feed section and/or the planar feed portion may adjoin (e.g., transition into) the first planar radiation section along the first bending line.
  • the piece of sheet metal may be bent at least along a second bending line.
  • the radiation portion may comprise a second (e.g., planar) radiation section adjoining the first planar radiation section along the second bending line.
  • the size (e.g., at least one of a length, a width and a surface area) of the second (e.g., planar) radiation section may be smaller than the size of the first planar radiation section.
  • the second bending line may (e.g., be configured to) be located at the first (e.g., maximum) height.
  • the second radiation section may be configured to extend from the first height and/or from the second bending line to a lower height and/or towards the reflector surface.
  • the second radiation section may be aligned (e.g., relative to the first radiation section) such that a required installation space for the antenna element is reduced compared with a scenario in which the second radiation section extends in a same plane as the first planar radiation section.
  • the second radiation section may be aligned perpendicular to the first planar radiation section.
  • the radiation portion may consist of the first planar radiation section and optionally the second (e.g., planar) radiation section.
  • the radiation portion comprises a slot.
  • the slot may extend in and/or define the polarization direction associated with the at least one of the radiators.
  • the slot may separate a first area of the first planar radiation section from a second area of the first planar radiation section.
  • the slot may separate a third area of the second (e.g., planar) radiation section from a fourth area of the second (e.g., planar) radiation section.
  • the second (e.g., planar) radiation section is formed by the third area and the fourth area, the third area being spatially separated from the fourth area by the slot.
  • the slot may be inserted by stamping when manufacturing the piece of sheet metal.
  • the slot may have an elongated shape and/or may extend longitudinally.
  • the support structure may comprise a first planar feed substrate and, optionally, a second planar feed substrate.
  • the planar feed substrate(s) may extend along the main radiation direction of the antenna element and/or (e.g., be configured to extend) perpendicular to the reflector surface and/or perpendicular to at least a part (e.g., the planar feed section) of the feed portion(s).
  • the planar feed section (e.g., of one, two or each of the at least one radiator) may be arranged perpendicular to at least one of the first planar feed substrate and the second planar feed substrate.
  • the first planar feed substrate may be arranged non-parallel to the second planar feed substrate, for example perpendicular thereto.
  • the first planar feed substrate may be attached to the second planar feed substrate.
  • the first planar feed substrate and the second planar feed structure may be slotted together.
  • At least one of the first planar feed substrate and the second planar feed structure may comprise a dielectric base material.
  • at least one of the first planar feed substrate and the second planar feed structure is configured as a printed circuit board (PCB).
  • the support structure may comprise a feed structure for feeding the at least one radiator with a feeding signal.
  • the feed structure may comprise at least one feed line.
  • One or more of each of the at least one feed line may be configured as a microstrip feedline.
  • the at least one feed line may at least partially (e.g., at least a portion thereof that is to be connected to one of the radiators) extend along the main radiation direction and/or in the height direction. At least one or each of the feed lines may be arranged on the first planar feed substrate and/or the second planar feed substrate.
  • the first planar feed substrate may be connected to the first pair of radiators and the second planar feed substrate may be connected to the second pair of radiators.
  • the first planar feed substrate may carry at least one feed line for the radiators of the first pair.
  • the first planar feed substrate may comprise or carry impedance matching circuitry such as circuitry configured to provide an impedance transformation matching (e.g., tailored for) the first pair of radiators, and/or a transformation between an asymmetrical and a symmetrical feeding of the first pair of radiators.
  • the second planar feed substrate may carry at least one feed line for the radiators of the second pair.
  • the second planar feed substrate may comprise or carry impedance matching circuitry such as circuitry configured to provide an impedance transformation matching (e.g., tailored for) the second pair of radiators, and/or a transformation between an asymmetrical and a symmetrical feeding of the second pair of radiators.
  • the first planar radiation section of the at least one radiator may be aligned oblique to the (e.g., first or second) planar feed substrate via which the at least one radiator is configured to be fed.
  • the support structure may further comprise a third planar feed substrate.
  • the first planar feed substrate and the second planar feed substrate may be attached to (e.g., slotted into) the third planar feed substrate.
  • the first planar feed substrate and/or the second planar feed substrate may be arranged perpendicular to the third planar feed substrate.
  • the third planar feed substrate may be specific for the antenna element.
  • the third planar feed substrate may be configured to provide a feed signal exclusively to the radiators of the antenna element comprising said third planar feed substrate.
  • the third planar feed substrate may comprise or carry impedance matching circuitry such as circuitry configured to provide an impedance transformation matching (e.g., tailored for) the antenna element (e.g., one or more of the radiator pairs of said antenna element) and/or a transformation between an asymmetrical and a symmetrical feeding of (e.g., one or more of the radiator pairs of) the antenna element.
  • the third planar feed substrate may be configured to be mounted on a base.
  • an antenna arrangement comprises at least one antenna element according to the first aspect and a reflector having the reflector surface.
  • the reflector surface may be planar.
  • the antenna element may be arranged at a predefined position relative to the reflector and/or be attached to the reflector.
  • the support structure may be attached to the reflector.
  • the antenna arrangement may comprise a base (e.g., relative) to which both the reflector and the support structure are attached.
  • an antenna array comprises a plurality of the antenna elements according to the first aspect.
  • the antenna array may further comprise a reflector having the reflector surface.
  • the reflector surface may be planar.
  • the reflector may be arranged beneath the plurality of antenna elements.
  • the plurality of antenna elements e.g., the third planar feed substrates and/or the feed portions and/or the support structures thereof
  • the antenna array may comprise a base (e.g., relative) to which both the reflector and the support structures of the plurality of antenna elements are attached.
  • the antenna array (e.g., each of the antenna elements thereof) may be configured to operate at a single frequency band.
  • a multi-band antenna system comprising the antenna array according to the third aspect and at least one additional antenna array, each of the antenna arrays being configured to operate at a different (e.g., array-specific) operating frequency band.
  • the at least one additional antenna array may comprise or consist of a plurality of antenna elements (e.g., according to the first aspect).
  • the antenna elements may differ between the antenna arrays of the system (e.g., in the size of their radiators and/or a bending angle at the respective first bending line).
  • the antenna arrays of the system may be arranged in a common area and/or may overlap one another (e.g., in a view along the main radiation direction of one or more of the antenna elements).
  • the (e.g., radiators of the) antenna elements of the antenna arrays of the system may be interleaved with one another.
  • the radiators of the antenna elements of the antenna array according to the third aspect may be arranged at a different (e.g., first and/or second) height than the radiators of the antenna elements of one or more of the at least one additional antenna array.
  • the first height and/or the second height may differ between antenna elements of different antenna arrays of the multi-band antenna system.
  • Radiators of antenna elements of different antenna arrays of the system may overlap one another at least partially (e.g., in a view along the main radiation direction of one or more of the antenna elements).
  • the radiators of antenna elements of different antenna arrays may be arranged in the form of a stack (e.g., above the reflector surface). Two or more of the antenna arrays may be configured as dual-polarized array (e.g., comprising dual-polarized antenna elements).
  • Polarization directions of antenna elements of different antenna arrays may be similar or parallel or orthogonal to one another.
  • Fig. 1 shows a perspective view of an antenna element in accordance with the present disclosure
  • Fig. 2 shows an upper view of the antenna element of Fig. 1;
  • Fig. 3 shows a side view of the antenna element of Fig. 1;
  • Fig. 4 shows a side view of a variant of the antenna element of Fig. 1;
  • Fig. 5 shows a perspective view of a multi-band antenna system in accordance with the present disclosure
  • Fig. 6 shows an upper view of the system of Fig. 5;
  • Fig. 7 shows a side view of the system of Fig. 5.
  • Fig. 1-3 show an antenna element 100 in accordance with the present disclosure.
  • the antenna element 100 comprises a first pair of radiators 2, 4 associated with a first polarization direction 6 and a second pair of radiators 8, 10 associated with a second polarization direction 12 orthogonal to the first polarization direction 6.
  • the antenna element 100 can be referred to as a dual-polarization or cross- polarization antenna element.
  • the radiators 2, 4, 8, 10 are each made of a piece of sheet metal and have a similar shape, although in other variants differently shaped radiators may be combined in the antenna element 100.
  • the radiators 2, 4 and 8, 10 comprised in a same pair of radiators are arranged in a mirror-symmetrical manner and form a dipole. To avoid repetition, only the radiator 2 will now be described in detail, with the features described for the radiator 2 also applying to the other radiators 4, 8, 10.
  • the piece of sheet metal forming the radiator 2 is bent along a first bending line 14 that separates a planar feed section 16 of a feed portion 18 of the respective radiator from a first planar radiation section 20 of a radiation portion 22 of the radiator 2.
  • the piece of sheet metal is also bent along a second bending line 24 that separates the first planar radiation section 20 from a second planar radiation section 26 of the radiation portion 22.
  • the feed section 16 extends perpendicular to a main radiation direction 27 of the antenna element 100, whereas the first planar radiation section 20 and the second planar radiation section 26 are each aligned oblique relative to the main radiation direction 27.
  • the feed portions 18 are configured to be arranged in parallel to a reflector surface 41 of a reflector 42 that, together with the antenna element 100, can be referred to as an antenna arrangement 150.
  • the first planar radiation section 20 of the radiators is bent upwards, away from the feed portion 18 and away from the reflector surface 41, around the first bending line 14.
  • the second planar radiation section 26 of the radiators is bent downwards towards the reflector surface 41 around the second bending line 24.
  • the radiator 2 further comprises a slot 28 extending along the radiation direction 6 associated with the radiator 2 from a distal end of the radiator 2 up to an end point 30 in the first planar radiation section 20, thereby separating areas 32, 34 of the first planar radiation section 20 and also separating areas 36, 38 of the second planar radiation section 26.
  • the slot 28 extends in a different manner or is entirely omitted.
  • the feed portion 18 may have a triangular outline, with one of its corners being arranged adjacent to the symmetry axis 48.
  • the first planar radiation section 20 of the radiation portion 22 may have a varying width (e.g., in a view along the main radiation direction 27 and/or in a view onto the radiation section 20), which is also the case in the example of Fig. 2.
  • the first planar radiation section 20 for example extends from the first bending line 14, where the radiator 2 has a width wl, with a (e.g., linearly) increasing width until a point 39 where the piece of sheet metal forming the radiator 2 has a width w2, and extends from the point 39 with a (e.g., linearly) decreasing width until a point 43 where the radiating portion 22 has a width w3, with wl ⁇ w2 and w2>w3 and w3 ⁇ wl.
  • the width of the second planar radiation section 26 may be constant and corresponds to the width w3 at point 43. Although this may provide a highly efficient radiator, other outlines of the feed portion 18 and the radiation portion 22 are also possible.
  • the antenna element 100 further comprises a support structure 40 that is configured to position the feed portion 18 of each radiator 2 in a predefined position relative to the reflector surface 41. In this manner, it can be ensured that the first planar radiation section 20 extends at least partially at a first height above the reflector surface that is larger than a second height at which the feed portion 18 of the same radiator 2 is located.
  • the support structure comprises a first planar feed substrate 44 in the form of a PCB that is attached to the first pair of radiators 2, 4, and a second planar feed substrate 46 in the form of another PCB that is attached to the second pair of radiators 8, 10.
  • the two feed substrates 44, 46 are slotted together perpendicularly to one another, such that an intersection line between the two planar feed substrates 44, 46 defines an axis of symmetry 48 relative to which the radiators 2, 4, 8, 10 are arranged in a rotation-symmetrical manner.
  • the feed substrates 44, 46 extend through the feed portions 16 of the respective radiators to attach the respective radiators thereto.
  • Each PCB 44, 46 carries feed lines connected to the respective radiators (e.g., via a solder connection or a capacitive coupling). Impedance matching circuitry and other circuitry may also be provided on one or more of the PCBs 44, 46.
  • the support structure 40 may further comprise a third planar feed substrate 50 arranged parallel to the reflector surface 41 and carrying the first and second planar feed substrates 44, 46.
  • the third planar feed substrate 50 is also formed as a PCB and carries feed lines for feeding the radiators of both pairs of radiators of the antenna element 100.
  • symmetrical-to-asymmetrical or asymmetrical-to-symmetrical feeding conversion circuitry may be carried by the third planar feed substrate 50.
  • the support structure 40 does not comprise planar feed substrates.
  • the support structure may comprise non-planar dielectric support elements such as pillars (e.g., if a coaxial feed line is used for feeding the reflectors).
  • the feed portions 18 of the radiators 2, 4 of the antenna element 100 are positioned by the support structure 40 at similar second heights hl above the reflector surface 41 and the radiators 2, 4 extend up to a first height ml above the reflector surface 41.
  • the feed portions 18 of the radiators 6, 8 of the antenna element 100 are positioned by the support structure 40 at similar second heights h2 above the reflector surface 41 and the radiators 6, 8 extend up to a first height m2 above the reflector surface 41.
  • Fig. 4 shows a side view of a variant of the antenna element 100 of Fig. 1.
  • the radiators 2, 4 are arranged at a different position along the main radiation direction 27 compared with the radiators 6, 8.
  • hl>h2 and ml>m2 and dl d2.
  • the second height hl, h2 of a radiator may be selected based on a required signal line length of a signal line connected to said radiator and extending along the height direction.
  • the signal lines for the radiators may be arranged on the feed substrates 44, 46 and extend, at least in a connection area 45, 47 of the respective feed substrate, along the height direction (e.g., 27).
  • the second heights hl, h2 may be selected to provide a balun for feeding for the radiators of the antenna element 100.
  • Figs. 5-7 show a multi-band antenna system 200 comprising multiple antenna arrays 300-1, 300-2, 300-3 formed by respective antenna elements 100-1, 100-2, 100-3.
  • the antenna arrays 300-1, 300-2, 300-3 may be arranged under a common antenna radome 52 of the antenna system 200 and/or on a same base 54 of the antenna system 200 and/or above or on the same reflector 42.
  • Each of the antenna arrays 300-1, 300-2, 300-3 is associated with an array-specific frequency band (e.g., a frequency band according to the 4 th generation (4G), 5 th generation (5G) or 6 th generation (6G) communication standard of the 3 rd generation partnership program (3GPP), such as a frequency band with a band number between nl and nl05).
  • an array-specific frequency band e.g., a frequency band according to the 4 th generation (4G), 5 th generation (5G) or 6 th generation (6G) communication standard of the 3 rd generation partnership program (3GPP), such as a frequency band with a band number between nl and nl05).
  • the antenna array 300-1 is configured to operate at a high frequency band (e.g., having a center operating frequency lying at or between 3.5- 7.1 GHz), the antenna array 300-2 is configured to operate at a mid-frequency band (e.g., having a center operating frequency lying at or between 1.4-2.6 GHz) and the antenna array 300-3 is configured to operate at a low frequency band (e.g., having a center operating frequency lying at or between 0.6-0.9 GHz). It is also possible to provide a single-band antenna system that comprises only one of the antenna arrays 300-1, 300-2, 300-3, or a dual-band antenna system that comprises only two of the antenna arrays 300-1, 300-2, 300-3.
  • a high frequency band e.g., having a center operating frequency lying at or between 3.5- 7.1 GHz
  • the antenna array 300-2 is configured to operate at a mid-frequency band (e.g., having a center operating frequency lying at or between 1.4-2.6 GHz)
  • the antenna array 300-3 is configured
  • the radiators 100-1, 100-2, 100-3 may be scaled versions of one another.
  • the radiators 100-1, 100-2, 100-3 differ from one another not only in the sizes of their radiating portions, but also in their heights hl, h2 and their heights ml, m2 and optionally in their extensions dl, d2 along the main radiation direction 27.
  • the radiating portions of radiators of different arrays in the example of Figs. 5-7 interleave one another and are arranged in a stacked manner above the radiator surface 41.
  • the antenna elements may differ between antenna arrays not only in size, but also in type and/or shape, while the antenna elements of at least one of the arrays are configured like the antenna element 100.
  • the radiators 100-3 can be optimized to have a low distortion on the radiators 100-2 and 100-1, and the radiators 100-2 can be optimized to have a low distortion on the radiators 100-1.
  • the larger radiators e.g., 100-3
  • the overlapped smaller radiators e.g., 100-2 and 100-1). This generally reduces mutual coupling between the radiators of the different antenna arrays.
  • radiators may be highly affected by the environment which may lead to significantly distorting the antenna system performance. Solutions in which radiators are formed as conductive layers on PCBs generally have a lower flexibility in view of retuning the radiator according to the environment. Such PCB-based radiators may also be less efficient compared with solid-metal radiators and may exhibit large variations in their radiation characteristics over their operating frequency band.
  • the antenna element disclosed herein comprises at least one radiator comprising a piece of sheet metal.
  • This may help to improve the performance of the antenna element in the complex array antenna systems such as the system 200.
  • the flexible design may lead to improved antenna performance in a multi-band antenna environment by reducing the near field and mutual coupling effects of the closely spaced radiators.
  • the energy consumption of an antenna system comprising such an antenna element can be reduced.
  • planar feed substrates as disclosed herein, a hybrid solution using both PCBs and sheet metal can be provided, which may reduce manufacturing costs.
  • the presented antenna element may have a high efficiency due to an all-metal radiator instead of a PCB based radiator.
  • the metal radiators can be easily adjusted by bending to retune the respective radiator according to the environment.
  • the metal radiators can thus be tuned such that effects of a multiband antenna environment can be reduced, specifically the nearfield effects and the mutual coupling between antenna elements.
  • Providing a slot in the radiators may further reduce the coupling between neighboring antenna elements and the environment. Bending the second radiation section downwards may help to increase the electrical length of the radiator due to which wider frequency bandwidth could be achieved with same dipole head dimensions (e.g., a same footprint of the radiators).
  • the antenna element provides stable radiation patterns with less variations over the frequency band compared with PCB-based radiators.
  • the radiators can be placed with some offset in height in order to compensate height difference of two associated balun feeds. In this way a similar performance by both pairs of radiators of the antenna element can be achieved.
  • the antenna element does not require a parasitic capacitive patch. Rather, corresponding compensation can be provided by bending the radiating portion upwards, at the same time tuning the antenna element depending upon the near field effects of the adjacent radiators or environment.
  • the presented solution gives flexibility to implement cross-band interference filtering techniques. Manufacturing costs can be reduced by reducing the number of PCB parts.
  • the solution may also be environment friendly and sustainable due to less amount of energy dissipation in the system and recyclable metal being used for the radiators instead of PCBs. Additional modifications of the solution described herein and further advantages thereof may be apparent to those skilled in the art in view of the present disclosure.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Aerials With Secondary Devices (AREA)

Abstract

L'invention divulgue un élément d'antenne à double polarisation pour un réseau d'antennes. L'élément d'antenne comprend au moins un radiateur comprenant une pièce de tôle comprenant {i} une partie d'alimentation et {ii} une partie de rayonnement comprenant une première section de rayonnement plane qui est alignée obliquement par rapport à une direction de rayonnement principale de l'élément d'antenne, la première section de rayonnement plane étant conçue pour s'étendre au moins partiellement à une première hauteur au-dessus de la surface de réflecteur. L'élément d'antenne comprend en outre une structure de support conçue pour positionner la partie d'alimentation du ou des éléments rayonnants à une seconde hauteur au-dessus d'une surface de réflecteur qui est inférieure à la première hauteur. L'invention divulgue également un réseau d'antennes et un système d'antenne multibande.
PCT/EP2023/078643 2023-10-16 2023-10-16 Élément d'antenne à double polarisation, réseau d'antennes et système d'antenne multibande Pending WO2025082580A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2023/078643 WO2025082580A1 (fr) 2023-10-16 2023-10-16 Élément d'antenne à double polarisation, réseau d'antennes et système d'antenne multibande

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2023/078643 WO2025082580A1 (fr) 2023-10-16 2023-10-16 Élément d'antenne à double polarisation, réseau d'antennes et système d'antenne multibande

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160134023A1 (en) * 2013-06-09 2016-05-12 Comba Telecom Technology (Guangzhou) Ltd. Dual polarization array antenna and radiation units thereof
WO2017086855A1 (fr) * 2015-11-17 2017-05-26 Gapwaves Ab Agencement d'antenne en nœud papillon montable en surface automatiquement mis à la terre, pétale d'antenne et procédé de fabrication
US20200106195A1 (en) * 2017-06-09 2020-04-02 Kathrein Se Dual-polarised crossed dipole and antenna arrangement having two such dual-polarised crossed dipoles
US20200212598A1 (en) * 2017-09-12 2020-07-02 Huawei Technologies Co., Ltd. Dual-polarized radiating element and antenna
EP3934023A1 (fr) * 2020-06-29 2022-01-05 Kaelus Antennas AB Élément d'antenne et antenne comprenant des éléments d'antenne

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160134023A1 (en) * 2013-06-09 2016-05-12 Comba Telecom Technology (Guangzhou) Ltd. Dual polarization array antenna and radiation units thereof
WO2017086855A1 (fr) * 2015-11-17 2017-05-26 Gapwaves Ab Agencement d'antenne en nœud papillon montable en surface automatiquement mis à la terre, pétale d'antenne et procédé de fabrication
US20200106195A1 (en) * 2017-06-09 2020-04-02 Kathrein Se Dual-polarised crossed dipole and antenna arrangement having two such dual-polarised crossed dipoles
US20200212598A1 (en) * 2017-09-12 2020-07-02 Huawei Technologies Co., Ltd. Dual-polarized radiating element and antenna
EP3934023A1 (fr) * 2020-06-29 2022-01-05 Kaelus Antennas AB Élément d'antenne et antenne comprenant des éléments d'antenne

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