WO2022058009A1 - Système d'antenne et procédé d'alimentation d'un réseau d'antennes d'éléments rayonnants à double polarisation - Google Patents

Système d'antenne et procédé d'alimentation d'un réseau d'antennes d'éléments rayonnants à double polarisation Download PDF

Info

Publication number
WO2022058009A1
WO2022058009A1 PCT/EP2020/075923 EP2020075923W WO2022058009A1 WO 2022058009 A1 WO2022058009 A1 WO 2022058009A1 EP 2020075923 W EP2020075923 W EP 2020075923W WO 2022058009 A1 WO2022058009 A1 WO 2022058009A1
Authority
WO
WIPO (PCT)
Prior art keywords
dual
radiating elements
subarray
feeding
polarized radiating
Prior art date
Application number
PCT/EP2020/075923
Other languages
English (en)
Inventor
Ignacio Gonzalez
Bruno BISCONTINI
Original Assignee
Huawei Technologies Co., Ltd.
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 Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Priority to CN202080105102.3A priority Critical patent/CN116097524A/zh
Priority to PCT/EP2020/075923 priority patent/WO2022058009A1/fr
Priority to EP20775248.6A priority patent/EP4208914A1/fr
Publication of WO2022058009A1 publication Critical patent/WO2022058009A1/fr

Links

Classifications

    • 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
    • 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
    • H01Q1/523—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas between antennas of an array
    • 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
    • H01Q21/061—Two dimensional planar arrays
    • H01Q21/065—Patch antenna array
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems
    • 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

Definitions

  • the present disclosure relates generally to the field of antennas; and more specifically, to antenna systems and methods of feeding antenna arrays of dual-polarized radiating elements.
  • communication systems employ multiple antennas (where each antenna include one or more radiators) to perform massive multiple-input multiple-output (mMIMO).
  • mMIMO massive multiple-input multiple-output
  • an allowed size of a radiating structure i.e. an aperture
  • increasing the number of antennas over the available aperture beyond a certain density is counterproductive. As this results in coupling of antennas, and radiation patterns become highly correlated, resulting in poorer performance of the communication systems.
  • transceivers i.e. transmitter/receiver (TRx) or radio chains
  • TRx transmitter/receiver
  • radio chains i.e. transmitter/receiver
  • Each of the transceivers usually feed a specific number of antenna elements in a conventional antenna array, and these groups of antenna elements are called sub arrays.
  • each polarization of each sub array is fed together sharing the same antenna elements.
  • system performance of the communications system depends on the coupling between each transceiver on the antenna array, the system performance is degraded due to the use of higher number of transceivers.
  • the technical problem is how to reduce the level of coupling in the antennas (i.e. in the conventional antenna array or antenna system) to improve the performance of the antenna system.
  • the present disclosure seeks to provide an antenna system and a method of feeding an antenna array of dual-polarized radiating elements.
  • the present disclosure seeks to provide a solution to the existing problem of coupling between transceivers in the antenna array, that reduces system performance of a conventional antenna system.
  • An aim of the present disclosure is to provide a solution that overcomes at least partially the problems encountered in prior art and provides an improved structure of an antenna system in which coupling is reduced and system performance is improved.
  • the present disclosure provides an antenna system, comprising: an antenna array of at least three dual-polarized radiating elements, wherein each of the dual-polarized radiating elements is configured to operate at a frequency range and comprises a first radiating part of a first polarization state and a second radiating part of a second polarization state orthogonal to the first polarization state, and a feeding structure connected with the dual-polarized radiating elements of each polarization state, wherein the feeding structure comprises: a first feeding network for feeding a first subarray of the dual-polarized radiating elements of the first polarization state by connecting with the first radiating parts of the dual-polarized radiating elements of the first subarray, and a second feeding network for feeding a second subarray of the dual-polarized radiating elements of the second polarization state by connecting with the second radiating parts of the dual-polarized radiating elements of the second subarray, wherein the second subarray is at least partially different from the first subarray.
  • the present disclosure provides an improved structure of the antenna system in which the first feeding network and the second feeding network are arranged in a way that there is increased distance between the feed lines of the feeding networks, and as a result of which there is reduced coupling (e.g. an improved feeding decoupling) in the antenna system.
  • the second subarray is at least partially different from the first subarray, this means that transceivers feed sub arrays that share radiating elements but not polarizations resulting in improved decoupling between transceivers.
  • the feeding lines are arranged alternately (e.g. to occupy reduced space in an antenna array) in the antenna system which results in higher integration in antenna routing in comparison to conventional antenna systems.
  • the antenna system of the present disclosure provides an extra degree of freedom, for example, in radiation pattern shaping of the first and the second subarray, which further improves flexibility and system performance of the antenna system.
  • the antenna array is a two-dimensional Massive Multiple Input Multiple Output (mMIMO) antenna array.
  • mMIMO Massive Multiple Input Multiple Output
  • each pair of dual-polarized radiating elements or a triplet i.e. three dual-polarized radiating elements
  • two transceivers i.e. 2 TRxs
  • one transceiver feeds a subset of radiating elements (i.e. first subarray) of the same polarization, whereas another transceiver feeds a partially different subset of radiating elements (i.e. second subarray) on different polarization (e.g. orthogonal polarization), which significantly reduces coupling and improves system performance.
  • the dual-polarized radiating elements of each of the first and second subarrays are distributed horizontally and/or vertically in a top view.
  • the antenna system of the present disclosure provides an extra degree of freedom in terms of radiation pattern shaping for the first and the second subarray, which further improves flexibility and system performance of the antenna system.
  • each of the first and second subarrays comprises three or more dual-polarized radiating elements.
  • the three or more dual-polarized radiating elements of the first and the second subarrays have an improved decoupling because of the the feeding structure in the antenna system. As a result, the radiation patterns are not correlated and there is improved system performance in comparison to conventional antennas.
  • the antenna system further comprising at least one singlepolarized radiating element arranged on at least one side of the antenna array.
  • the at least one single polarized radiating element that is added at the top and bottom of the antenna array, a pairing for all the dual-polarized radiating elements is potentially obtained.
  • the at least one single polarized radiating element is provided for the pairing of all the dual-polarized radiating elements.
  • each of the radiating elements comprises a patch antenna.
  • the patch antenna is a flat radiating patch by virtue of which a large number of radiating elements can be used in a limited space of an antenna system (or an antenna array) and due to the feeding structure for these patch antennas, an improved decoupling is achieved.
  • each of the radiating elements comprises a director.
  • the dual-polarized radiating elements increase directivity of electromagnetic radiations that are transmitted or received in a given direction to maintain the system performance.
  • the present disclosure provides a method of feeding an antenna array of dual-polarized radiating elements, wherein the antenna array comprises at least three dualpolarized radiating elements, each of the dual-polarized radiating elements is configured to operate at a frequency range and comprises a first radiating part of a first polarization state and a second radiating part of a second polarization state orthogonal to the first polarization state, the method comprising: feeding, with a first feeding network, a first subarray of the dualpolarized radiating elements of the first polarization state by connecting the first feeding network with the first radiating parts of the dual-polarized radiating elements of the first subarray, and feeding, with a second feeding network, a second subarray of the dual-polarized radiating elements of the second polarization state by connecting the second feeding network with the second radiating parts of the dual-polarized radiating elements of the second subarray, wherein the second subarray is at least partially different from the first subarray.
  • the present disclosure provides an improved method of feeding the antenna array in which there is an increased distance between the feed lines of the first and the second feeding networks, resulting in reduced coupling in the antenna array (i.e. an improved feeding decoupling). Moreover, the method enables feeding via the feeding lines that are arranged alternately which results in higher integration in antenna routing in comparison to conventional antennas. Beneficially, the method of the present disclosure provides an extra degree of freedom in terms of radiation pattern shaping for the first and the second subarray which further improves performance of the antenna array.
  • FIG. 1A is an illustration of a portion of an antenna array of an antenna system, in accordance with an embodiment of the present disclosure
  • FIG. 1 B is an illustration of an antenna system, in accordance with an embodiment of the present disclosure
  • FIG. 1C is an illustration of an antenna system, in accordance with another embodiment of the present disclosure.
  • FIG. 1 D is an illustration of an antenna system, in accordance with yet another embodiment of the present disclosure.
  • FIG. 2 is a flowchart of a method of feeding an antenna array of dual-polarized radiating elements, in accordance with an embodiment of the present disclosure
  • FIG. 3 is an illustration of an antenna system and an antenna array, in accordance with an embodiment of the present disclosure
  • FIG. 4A is an illustration of an implementation of a portion of an antenna system, in accordance with an embodiment of the present disclosure
  • FIG. 4B is an illustration of an implementation of a portion of an antenna system, in accordance with another embodiment of the present disclosure.
  • FIG. 4C is an illustration of an implementation of a portion of an antenna system, in accordance with yet another embodiment of the present disclosure.
  • FIG. 4D is an illustration of an implementation of a portion of an antenna system, in accordance with another embodiment of the present disclosure.
  • FIG. 5A is an illustration of an antenna system operating in a first polarization state, in accordance with an embodiment of the present disclosure
  • FIG. 5B is an illustration of an antenna system operating in a second polarization state, in accordance with an embodiment of the present disclosure.
  • FIG. 5C is an illustration of an antenna system operating in a first and a second polarization state, in accordance with an embodiment of the present disclosure.
  • an underlined number is employed to represent an item over which the underlined number is positioned or an item to which the underlined number is adjacent.
  • a non-underlined number relates to an item identified by a line linking the nonunderlined number to the item.
  • the non-underlined number is used to identify a general item at which the arrow is pointing.
  • FIG. 1A is an illustration of a portion of an antenna array of an antenna system, in accordance with an embodiment of the present disclosure.
  • a portion of an antenna array 102 of an antenna system in the portion of the antenna array 102, there is shown four dual-polarized radiating elements (such as the dualpolarized radiating element 104) and a feeding structure 106 connected with the dual-polarized radiating elements 104.
  • Each of the dual-polarized radiating elements 104 includes a first radiating part 108 and a second radiating part 110.
  • the feeding structure 106 includes a first feeding network 112 and a second feeding network 114.
  • a first subarray 116 and a second subarray 118 There is shown.
  • transceivers 120 connected to each of the first feeding network 112 and the second feeding network 114.
  • the dashed squares that represents the first subarray 116 and the second subarray 118 are used for illustration purpose only, and do not form a part of the antenna array 102.
  • thick lines are used to represent the first feeding network 112 for one polarization state (i.e. the first polarization state) and dotted lines are used to represent the second feeding network 114 for another polarization state (i.e. the second polarization state), where both the first feeding network 112 and the second feeding network 114 are electrically conductive tracks.
  • the present disclosure provides the antenna system comprising: an antenna array 102 of at least three dual-polarized radiating elements, wherein each of the dual-polarized radiating elements 104 is configured to operate at a frequency range and comprises a first radiating part 108 of a first polarization state and a second radiating part 110 of a second polarization state orthogonal to the first polarization state, and a feeding structure 106 connected with the dual-polarized radiating elements 104 of each polarization state, wherein the feeding structure 106 comprises a first feeding network 112 for feeding a first subarray 116 of the dualpolarized radiating elements 104 of the first polarization state by connecting with the first radiating parts 108 of the dual-polarized radiating elements 104 of the first subarray 116, and a second feeding network 114 for feeding a second subarray 118 of the dual-polarized radiating elements 104 of the second polarization state by connecting with the second radiating parts 110 of the dual-polarized radiating elements 104 of the
  • the antenna array 102 of the antenna system may also be referred to as an antenna panel or an array comprising several antenna elements (i.e. multiple antenna devices, radiating elements, or radiators arranged in a defined manner).
  • the antenna system is used for telecommunication.
  • the antenna system may be used in a wireless communication system.
  • an array of such antenna system or one or more antenna systems may be used in the communication system.
  • Examples of such wireless communication system include, but is not limited to, a base station (such as an Evolved Node B (eNB), a gNB, and the like), a repeater device, a customer premise equipment, and other customized telecommunication hardware.
  • the radiating side of the antenna array 102 may have a non-planar structure.
  • the antenna array 102 of the system may have different geometrical shapes, such as elongated, square, rectangular, circular, or even planar structure, without limiting the scope of the disclosure.
  • the antenna array 102 refers to a combination of two or more dual-polarized radiating elements 104 that may be arranged horizontally or vertically or in a combination of horizontal and vertical to enable wireless communication.
  • the antenna array 102 is a two-dimensional Massive Multiple Input Multiple Output (mMIMO) antenna array.
  • the antenna system is configured to use the MIMO or multi-user MIMO (MU-MIMO), or massive MIMO methods for transmission or receiving of radio frequency signals via the dual-polarized radiating elements 104 to and from various network nodes, such as user equipment devices or base station simultaneously.
  • the antenna system supports MIMO to achieve spectral efficiency for communication with the UEs.
  • the antenna array 102 is the mMIMO array, where multiple transceivers 120 and dualpolarized radiating elements 104 are used, still, the coupling between the transceivers 120 is reduced and the overall system performance is improved.
  • the dual-polarized radiating elements 104 may also be referred to as antenna elements, and are configured to transmit and receive communication signals (such as radio frequency signals) to and from devices, such as UEs.
  • the dual-polarized radiating elements 104 receive radio frequency current from the feeding structure 106 to enable transmission and receiving of radio frequency signals.
  • the dual-polarized radiating elements 104 may be configured to operate as an uplink element or a downlink element. In an example, the dualpolarized radiating elements 104 alternatively operate as uplink and downlink elements.
  • each of the radiating elements 104 comprises a director.
  • the director enables the dual-polarized radiating elements 104 to increase a directivity of the electromagnetic signals/radiations that are transmitted or received in a given direction. As a result, a beam of RF signals can be formed in a given direction by the dual-polarized radiating elements 104 using the director.
  • Each of the dual-polarized radiating elements 104 is configured to operate at a frequency range.
  • the frequency range refers to range in which communication signals are transmitted or received by the dual-polarized radiating elements 104.
  • the frequency range may be a 5G New Radio (NR) radio frequency range (e.g. F1 band of sub-6 Ghz or a F2 band of above 6 GHz that constitute mmWave signals).
  • NR 5G New Radio
  • the frequency range is 20 Kilohertz to 300 GHz.
  • the dual-polarized radiating elements 104 include the first radiating part 108 of the first polarization state and the second radiating part 110 of the second polarization state orthogonal to the first polarization state.
  • each of the dual-polarized radiating elements 104 can transmit or receive two independent data streams.
  • the second polarization state is orthogonal to the first polarization state there is reduced interference between the two polarization states.
  • a direction of electromagnetic signals transmitted by the two radiating parts are orthogonal with respect to each other.
  • each of the radiating elements 104 comprises a patch antenna.
  • the patch antenna refers to a flat radiating patch that is configured to radiate electromagnetic signal in the frequency range.
  • the radiating elements 104 in the form of the patch radiator has a top surface and a bottom surface wherein the electromagnetic signal in the frequency range is radiated from the top surface.
  • the radiating elements 104 is a metallic patch radiator.
  • the feeding structure 106 is connected with the dual-polarized radiating elements 104 of each polarization state.
  • the feeding structure 106 is configured to enable the first radiating part 108 and the second radiating part 110 to transmit or receive electromagnetic signals.
  • the feeding structure 106 provides feed current to the first radiating part 108 and the second radiating part 110 of each of the dual-polarized radiating elements 104.
  • the feeding structure 106 refers to conductive tracks that are arranged to provide feed current to the first radiating part 108 for the first polarization and the second radiating part 110 for the second polarization.
  • the first feeding network 112 and the second feeding network 114 of the feeding structure 106 are connected to a respective transceiver (also represented as TRx in the FIG. 1A).
  • each of the transceivers 120 corresponds to a radio chain or is a part of the radio chain that is connected to each of the first feeding network 112 and the second feeding network 114.
  • a radio chain refers to a single radio and all of its supporting signal processing electronic components, including a transceiver, one or more mixers, one or more amplifiers, and one or more analog/digital converters.
  • each of the first and second subarrays comprises at least a pair of the dual-polarized radiating elements 104.
  • each of the first subarray 116 and the second subarray 118 include a pair of dual-polarized radiating elements 104.
  • the first subarray 116 includes a first dual-polarized radiating element 104a and a second dual-polarized radiating element 104b
  • the second subarray 118 includes the second dual-polarized radiating element 104b and a third dual-polarized radiating element 104c.
  • each of the first and second subarrays comprises three or more dual-polarized radiating elements 104.
  • each of the first subarray 116 and the second subarray 118 may include a triplet of dual-polarized radiating elements 104.
  • Each of the transceivers 120 usually feed a specific number of antenna elements called subarrays.
  • each pair of dual-polarized radiating elements or a triplet i.e. three dualpolarized radiating elements
  • two transceivers i.e. 2 TRxs
  • one transceiver feeds a subset of radiating elements (i.e.
  • the first subarray 116) of the same polarization whereas another transceiver feeds a partially different subset of radiating elements (i.e. the second subarray 118) on different polarization (e.g. orthogonal polarization), which significantly reduces coupling and improves system performance.
  • polarization e.g. orthogonal polarization
  • the feeding structure 106 includes the first feeding network 112 for feeding the first subarray 116 of the dual-polarized radiating elements 104 of the first polarization state by connecting with the first radiating parts 108 of the dual-polarized radiating elements 104 of the first subarray 116.
  • the first subarray 116 includes a first dual-polarized radiating element 104a and a second dual-polarized radiating element 104b of the dual-polarized radiating elements 104.
  • the first feeding network 112 feeds the first polarization state of both the first dual-polarized radiating element 104a and the second dualpolarized radiating element 104b by connecting to respective first radiating parts 108.
  • a first transceiver 120a of the transceivers 120 is connected to second feeding network 114 that provides feed current to the first polarization state of the dual-polarized radiating elements 104 of the first subarray 116.
  • the feeding structure 106 further includes the second feeding network 114 for feeding the second subarray 118 of the dual-polarized radiating elements 104 of the second polarization state by connecting with the second radiating parts 110 of the second subarray 118.
  • the second subarray 118 includes the second dual-polarized radiating element 104b and the third dual-polarized radiating element 104c of the dual-polarized radiating elements 104.
  • the second feeding network 114 feeds the second polarization state of both the second dual-polarized radiating element 104b and the third dual-polarized radiating element 104c by connecting to respective second radiating part 110.
  • a second transceiver 120b of the transceivers 120 is connected to the first feeding network 112 that provides feed current to the second polarization state of dual-polarized radiating elements 104 of the second subarray 118.
  • each dual-polarized radiating elements 104 has two polarization states (i.e. first polarization state and the second polarization state) such that first polarization state is fed by one transceiver such as a transceiver ‘A’ and second polarization state will be fed by another transceiver such as a transceiver ‘B’. This reduces coupling between transceivers and improves system performance.
  • the second subarray 118 is at least partially different from the first subarray 116.
  • first subarray 116 and the second subarray 118 have at least one common dualpolarized radiating element (e.g. the dual-polarized radiating elements 104b) and at least one dual-polarized radiating element (e.g. the dual-polarized radiating element 104a or the dualpolarized radiating element 104c) that is different in each subarray.
  • the first subarray 116 includes the first dual-polarized radiating element 104a and the second dualpolarized radiating element 104b
  • the second subarray 118 includes the second dualpolarized radiating element 104b that is common and the third dual-polarized radiating element 104c that is different.
  • the second subarray 118 is at least partially different.
  • the antenna system of the present disclosure has reduced coupling between the various transceivers 120 in comparison to the antenna system used conventionally.
  • a level of co-polar coupling and x-polar coupling in conventional antenna systems are higher and is substantially reduced by the antenna system of the present disclosure.
  • the coupling between the transceivers 120 can limit performance and therefore capacity provided by the antenna system. It is therefore important to control and reduce the level of coupling, which is achieved by the antenna system of the present disclosure.
  • the dual-polarized radiating elements 104 are very close together in the antenna system of the present disclosure as well as in conventional antenna systems, routing may be challenging due to the reduce space, which may lead to high coupling.
  • the first feeding network 112 and the second feeding network 114 are arranged in a way that, there is increased distance between the feed lines of the feeding networks to reduce the coupling.
  • a phase center of the first subarray 116 and the second subarray 118 is displaced in comparison to conventional antenna systems.
  • polarization coupling is inversely proportional to the distance, an increase in the aforesaid distance reduced the polarization coupling in comparison to conventional antenna systems.
  • the antenna system having the antenna array 102 provides an extra degree of freedom on setting transceivers configurations. In an example, the antenna system allows a highly decoupled vertical or horizontal configuration of transceivers.
  • FIG. 1 B is an illustration of an antenna system, in accordance with an embodiment of the present disclosure.
  • FIG. 1B is described in conjunction with elements from FIG. 1A.
  • an antenna system 122A With reference to FIG. 1 B, there is shown an antenna system 122A.
  • the antenna system 122A includes the dual-polarized radiating elements 104, each of which includes the first radiating part 108 and the second radiating part 110.
  • the first feeding network 112 and the second feeding network 114 There is further shown the first subarray 116 and the second subarray 118.
  • transceivers 120 connected to each of the first feeding network 112 and the second feeding network 114.
  • the antenna system 122A includes the antenna array 102 described in FIG. 1A that are operating together in the antenna system 122A.
  • the first feeding network 112 and the second feeding network 114 are arranged vertically.
  • the dual-polarized radiating elements 104 of each of the first and second subarrays are distributed vertically in a top view.
  • three dual-polarized radiating elements 104 of the first subarray 116 and the second subarray 118 are arranged vertically in a way that the first dual-polarized radiating element 104a is above the second dual-polarized radiating element 104b, and the third dual-polarized radiating element 104c is below the second dual-polarized radiating element 104b.
  • the first subarray 116 and the second subarray 118 are vertically arranged with an overlap between them. In other words, both the first subarray 116 and the second subarray 118 have one dual-polarized radiating element in common.
  • the distance D between two feeding lines of a given feeding network (such as first feeding network 112) is larger in comparison to feeding lines of conventional antenna systems.
  • an improved routing of the transceivers 120 is enabled.
  • the first feeding network 112 and the second feeding network 114 may not be parallel to each other, as a result of which better integration is enabled in comparison to conventional antenna systems.
  • the antenna system 122A has improved decoupling between transceivers 120 proportional to the distance D that is increased with reference to their respective phase centers.
  • higher integration is possible in the routing as feeding lines of a given feeding network alternate to occupy space (horizontally).
  • the feeding lines are distributed over a larger area in comparison to conventional antenna systems where feeding lines are close by leading to coupling.
  • the terms vertical and horizontal refers to directions with respect to ground surface (considering earth’s surface as horizontal surface) when the antenna system 122A is deployed.
  • FIG. 1C is an illustration of an antenna system, in accordance with another embodiment of the present disclosure.
  • FIG. 1C is described in conjunction with elements from FIG. 1A and 1 B.
  • an antenna system 122B With reference to FIG. 1 C, there is shown an antenna system 122B.
  • the antenna system 122B includes the dual-polarized radiating elements 104, each of which includes the first radiating part 108 and the second radiating part 110.
  • the first feeding network 112 and the second feeding network 114 There is further shown the first subarray 116 and the second subarray 118.
  • transceivers 120 connected to each of the first feeding network 112 and the second feeding network 114.
  • the first feeding network 112 is arranged vertically and the second feeding network 114 is arranged horizontally.
  • the first subarray 116 is arranged vertically and the second subarray 118 are horizontally arranged with an overlap between them. In other words, both the first subarray 116 and the second subarray 118 have one dualpolarized radiating element in common.
  • the first subarray 116 and the second subarray 118 are connected to the first feeding network 112 that is arranged vertically and the second feeding network 114 that is arranged horizontally.
  • the antenna system 122B has similar advantage as that of the antenna system 122A.
  • the dual-polarized radiating elements 104 of each of the first and second subarrays are distributed vertically and horizontally respectively in a top view.
  • three dual-polarized radiating elements 104 are potentially arranged horizontally and vertically such that a first dual-polarized radiating element 104a is arranged above a second dual-polarized radiating element 104b, and a third dual-polarized radiating element 104c is arranged right to the second dual-polarized radiating element.
  • FIG. 1 D is an illustration of an antenna system, in accordance with yet another embodiment of the present disclosure.
  • FIG. 1 D is described in conjunction with elements from FIG. 1A, 1 B, and 1C.
  • an antenna system 122C With reference to FIG. 1 D, there is shown an antenna system 122C.
  • the antenna system 122C includes the dual-polarized radiating elements 104, each of which includes the first radiating part 108 and the second radiating part 110.
  • the first feeding network 112 and the second feeding network 114 There is further shown the first subarray 116 and the second subarray 118.
  • transceivers 120 connected to each of the first feeding network 112 and the second feeding network 114.
  • the first feeding network 112 is alternatively arranged vertically and horizontally.
  • the second feeding network 114 is also alternatively arranged horizontally and vertically.
  • the first subarray 116 is alternatively arranged vertically and horizontally.
  • the second subarray 118 is also alternatively arranged horizontally and vertically.
  • the combination of arranging the feeding networks horizontally and vertically provides extra freedom in terms of subarray’s radiation pattern shaping, which leads to an increase in system performance of the antenna system 122C.
  • a combination of vertical and horizontal pairs of the same polarization enables extra freedom in terms of the subarray’s radiation pattern shaping, which can lead to an increase in the system performance.
  • the antenna system 122C has similar advantage as that of the antenna system 122A.
  • the dual-polarized radiating elements 104 of each of the first and second subarrays are alternatively distributed vertically and horizontally in a top view.
  • two or three dual-polarized radiating elements 104 are arranged horizontally and vertically such that the first dual-polarized radiating element 104a is arranged below the second dual-polarized radiating element 104b, and the third dual-polarized radiating element 104c is arranged right to the second dual-polarized radiating element 104b, as shown.
  • FIG. 2 is a flowchart of a method of feeding an antenna array of dual-polarized radiating elements, in accordance with an embodiment of the present disclosure.
  • FIG. 2 is described in conjunction with elements from FIG. 1A, 1B, and 1C.
  • the present disclosure provides a method of feeding an antenna array 102 of dual-polarized radiating elements 104, wherein the antenna array 102 comprises at least three dual-polarized radiating elements, each of the dual-polarized radiating elements 104 is configured to operate at a frequency range and comprises a first radiating part 108 of a first polarization state and a second radiating part 110 of a second polarization state orthogonal to the first polarization state, the method comprising: feeding, with a first feeding network 112, a first subarray 116 of the dualpolarized radiating elements 104 of the first polarization state by connecting the first feeding network 112 with the first radiating parts 108 of the dual-polarized radiating elements 104 of the first subarray 116, and feeding, with
  • the method 200 includes steps 202 and 204.
  • the steps 202 and 204 may be executed in any reasonable order to carry into effect the objectives of the disclosed embodiments. No particular order to the disclosed steps of the method 200 is necessarily implied by the depiction in FIG. 2, and the accompanying description, except where a particular method step is a necessary precondition to execution of any other method step. Individual method steps may be carried out in sequence or in parallel in simultaneous or near simultaneous timing.
  • the method 200 comprises feeding, with a first feeding network 112, a first subarray 116 of the dual-polarized radiating elements 104 of the first polarization state by connecting the first feeding network 112 with the first radiating parts 108 of the dual-polarized radiating elements 104 of the first subarray 116.
  • the first feeding network 112 provides feed to the first radiating parts 108 of the dual-polarized radiating elements to enable the dualpolarized radiating elements 104 to transmit or receive two independent data streams.
  • the first feeding network 112 includes feed lines to provide feed to the dual-polarized radiating elements 104.
  • the first feeding network 112 feeds the first polarization state of both a first dual-polarized radiating element 104a and a second dual-polarized radiating element 104b of the dual-polarized radiating elements 104 by connecting to the respective first radiating parts 108.
  • the first feeding network is connected to transceivers 120 to provide feed to the dual-polarized radiating elements 104 of the first subarray 116.
  • the method 200 comprises feeding, with a second feeding network 114, a second subarray 118 of the dual-polarized radiating elements 104 of the second polarization state by connecting the second feeding network with the second radiating parts 110 of the dualpolarized radiating elements 104 of the second subarray 118, wherein the second subarray 118 is at least partially different from the first subarray 116.
  • the second feeding network 114 provides feed to the second radiating parts 110 of the dual-polarized radiating elements 104to enable the dual-polarized radiating elements 104 to transmit or receive two independent data streams.
  • the second feeding network 114 includes feed lines to provide feed to the dual-polarized radiating elements 104.
  • the second feeding network 114 feeds the second polarization state of both the second dual-polarized radiating 104b element and a third dual-polarized radiating element 104c of the dual-polarized radiating elements 104 by connecting to the respective second radiating parts 110.
  • a phase center of the first sub array 116 and the second subarray 118 is displaced in comparison to conventional antenna systems.
  • polarization coupling is inversely proportional to the distance, an increase in the aforesaid distance reduced the polarization coupling in comparison to conventional technologies.
  • the antenna system of the present disclosure provides an extra degree of freedom on setting transceiver configurations.
  • the antenna system allows a highly decoupled vertical or horizontal configuration of transceiver.
  • the second subarray 118 is partially different from the first subarray 116 there is reduced coupling between the transceivers in comparison to the antenna system used conventionally.
  • the reduced coupling enables in providing improved system performance by the antenna system.
  • steps 202 and 204 are only illustrative and other alternatives can also be provided where one or more steps are added, one or more steps are removed, or one or more steps are provided in a different sequence without departing from the scope of the claims herein.
  • FIG. 3 is an illustration of an antenna system and an antenna array, in accordance with an embodiment of the present disclosure.
  • the antenna system 300 includes dual-polarized radiating elements, such as uplink elements 304 and downlink elements 306.
  • the antenna system 300 further includes single polarized radiating elements as uplink single elements 308 and downlink single elements 310.
  • the antenna array 302 includes interleaved dual-polarized radiating elements and single polarized radiating elements at edges, working at different bands.
  • the antenna array 302 includes feeding network that via feed lines provide feed to the uplink elements 304, the downlink elements 306, the uplink single elements 308 and the downlink single elements 310.
  • at least two uplink elements are jointly fed (connected to) by one port for uplink and for communicating RF signals at the first polarization state at one side of the antenna array 302 (represented as “pol+” i.e. polarization at one side of the antenna array 302).
  • At least two downlink elements are jointly fed (connected to) by one port for downlink and for communicating RF signals at the second polarization state at the other side (represented as “pol-” i.e. polarization at another side of the antenna array 302).
  • different ports (Portl, port2, port3, port4) are provided, each of which are connected to two respective uplink and downlink elements of different polarization states via respective feed lines, as shown.
  • the routing of feed lines of the feeding network is very convoluted, which improves the antenna performance.
  • the single polarized element (uplink single elements 308 and downlink single elements 310) is added at the top and bottom of the antenna array 302 to have pairing for all the dual-polarized radiating elements.
  • the uplink single element 308 is paired with one uplink element 304 and the downlink single element 310 is paired with one downlink element 306.
  • the antenna system 300 has reduced coupling and improved feeding of the dual-polarized radiating elements.
  • the antenna system 300 may be a dual band mMIMO array.
  • the antenna system further comprising at least one single-polarized radiating element arranged on at least one side of the antenna array.
  • the at least one single polarized radiating element (represented as the uplink single elements 308 and the downlink single elements 310) is added at the top and bottom of the antenna array 302 to have pairing for all the dual-polarized radiating elements.
  • the single polarized radiating element is connected to a transceiver that feeds only to one dual-polarized radiating element at the top and the bottom of the antenna array 302.
  • the antenna array 302 provides an improved structure such that there is increased distance between the feed lines of the feeding networks, and as a result of which there is reduced coupling (e.g. an improved feeding decoupling) in the antenna system 300.
  • FIG. 4A is an illustration of an implementation of a portion of an antenna system, in accordance with an embodiment of the present disclosure. With reference to FIG. 4A, there is shown the antenna system 400A.
  • the antenna system 400A includes dual-polarized radiating elements, such as an uplink element 402A, and a downlink element 404A.
  • the antenna system 400A further includes a first feeding network 406A and a second feeding network 408A.
  • the antenna system 400A provides a wider antenna array to make space for the feeding lines connecting the dualpolarized radiating elements.
  • FIG. 4B is an illustration of an implementation of a portion of an antenna system, in accordance with another embodiment of the present disclosure.
  • the antenna system 400B includes dual-polarized radiating elements, such as an uplink element 402B, and a downlink element 404B.
  • the antenna system 400B further includes a first feeding network 406B and a second feeding network 408B. As shown, each of the first feeding network 406B and the second feeding network 408B have two feed lines which have space between them. However, the antenna system 400B has coupling (crosstalk) between the two feed lines of each of the first feeding network 406B and the second feeding network 408B.
  • the antenna system 400C is an illustration of an implementation of a portion of an antenna system, in accordance with yet another embodiment of the present disclosure.
  • the antenna system 400C includes dual-polarized radiating elements, such as an uplink element 402C, and a downlink element 404C.
  • the antenna system 400B further includes a first feeding network 406C and a second feeding network 408C. As shown, each of the first feeding network 406C and the second feeding network 408C have feed lines which cross each other. As a result, the antenna system 400C has some coupling (crosstalk) between the feed lines of each of the first feeding network 406C and the second feeding network 408C.
  • FIG. 4D is an illustration of an implementation of a portion of an antenna system, in accordance with another embodiment of the present disclosure.
  • the antenna system 400C includes dual-polarized radiating elements, such as an uplink element 402D and a downlink element 404D.
  • the antenna system 400B further includes a first feeding network 406D and a second feeding network 408D.
  • the antenna system 400D has a compact structure. Beneficially, there is no crossover and coupling between feeding lines of the first feeding network 406D and the second feeding network 408D in this arrangement of feeding network.
  • FIG. 5A is an illustration of an antenna system operating in first polarization state, in accordance with an embodiment of the present disclosure.
  • the antenna system 500A includes an antenna array 502 (as column), where the antenna system 500A corresponds to the antenna system 300 with the antenna array 302 (of FIG. 3) to depict routing of feed lines for dual-polarized radiating elements (uplink elements 504 and downlink elements 506), where a transceiver shares radiating elements but not polarization.
  • FIG. 5A there are shown slots and the routing of the feed lines for slots, where the slots are for feeding the dual-polarized radiating elements (i.e. patch elements) of the antenna system 300 (of FIG. 3).
  • one transceiver feeds a subset of dual-polarized radiating elements (i.e. first subarray) of the same polarization
  • another transceiver feeds a partially different subset of dual-polarized radiating elements (i.e. second subarray) on different polarization (e.g. orthogonal polarization), which significantly reduces coupling and improves system performance.
  • a representative group of three dual-polarized radiating elements which includes two downlink elements and one uplink element, using rounded rectangles (e.g. a representation 514 that depicts one group) for illustration purposes, which communicate RF signals in a first polarization state.
  • feeding lines of a first feeding network 510 and a second feeding network 512 is arranged alternatively to increase a distance between the feed lines (similar to that of FIG. 4D).
  • a distance with reference to respective phase centres is increased which improves decoupling between transceivers proportional to the distance that is increased.
  • a phase center of feeding lines is displaced (e.g. in a defined phase offset 508).
  • the defined phase offset 508 added in the feeding path is due to the direction in which a given slot is fed (where the slot feeds in turn a corresponding patch).
  • polarization coupling is inversely proportional to the distance, an increase in the aforesaid distance reduces the polarization coupling in comparison to conventional antenna systems.
  • the defined phase offset 508 also provides an improved isolation.
  • FIG. 5B is an illustration of an antenna system operating in second polarization state, in accordance with an embodiment of the present disclosure.
  • FIG. 5B is described in conjunction with elements from FIG. 5A.
  • the antenna system 500A with another representative groups of three dual-polarized radiating elements, which includes two downlink elements and one uplink element (illustrated using rounded rectangles, such as a representation 516) for illustration purposes, which communicate RF signals in a second polarization state instead of the first polarization state of the FIG. 5A.
  • each representative group e.g.
  • a representation 516 that depicts another group) of three dualpolarized radiating elements for the second polarization is partially different from the group of three dual-polarized radiating elements (e.g. the representation 514 of FIG. 5A) that operate in the first polarization.
  • the representative groups depicted by rounded rectangles e.g. the representation 516) are used for illustration purposes only to depict active second polarization and are not used to indicate any feeding network.
  • there are pairs of dual-polarized radiating elements (each element corresponds to patch having two slots fed on different polarizations).
  • FIG. 5C is an illustration of an antenna system operating in a first and a second polarization state, in accordance with an embodiment of the present disclosure.
  • FIG. 5C is described in conjunction with elements from FIG. 5A and 5B. With reference to FIG. 5C, there is shown the antenna system 500A that operates in both the first polarization state and the second polarization state with decoupled polarization.
  • FIG 5C different representations (illustrated using rounded rectangles) of three dual-polarized radiating elements, which includes two downlink elements and one uplink element are shown (i.e. the representations 514 and 516 of FIG. 5A and 5B shown together) to illustrate communication of RF signals in both first and second polarization state.
  • Each representative group (e.g. depicted by the representation 516) of three dual-polarized radiating elements for the second polarization is partially different from the representative group of three dual-polarized radiating elements (e.g. depicted by the representation 514) that operate in the first polarization for decoupled polarization, which significantly reduces coupling and improves system performance.
  • transceivers feed subarrays that share radiating elements but not polarizations resulting in improved decoupling between transceivers due to their feeding structure.
  • an improved antenna architecture is provided that manifests increased distance between the feed lines of the feeding networks, and as a result of which there is reduced coupling (e.g. an improved feeding decoupling) in the antenna system.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

L'invention concerne un système d'antenne qui comprend un réseau d'antennes d'au moins trois éléments rayonnants à double polarisation, chaque élément rayonnant à double polarisation comprenant une première partie rayonnante de premier état de polarisation et une seconde partie rayonnante de second état de polarisation orthogonale au premier état de polarisation. Le système d'antenne comprend en outre une structure d'alimentation connectée aux éléments rayonnants à double polarisation de chaque état de polarisation. La structure d'alimentation comprend un premier réseau d'alimentation pour alimenter un premier sous-réseau des éléments rayonnants à double polarisation du premier état de polarisation, et un second réseau d'alimentation pour alimenter un second sous-réseau des éléments rayonnants à double polarisation du second état de polarisation. Le second sous-réseau est au moins partiellement différent du premier sous-réseau. Le système d'antenne fournit une structure améliorée dans laquelle le couplage est réduit par augmentation de la distance entre les lignes d'alimentation et ce qui permet d'améliorer ainsi les performances du système.
PCT/EP2020/075923 2020-09-17 2020-09-17 Système d'antenne et procédé d'alimentation d'un réseau d'antennes d'éléments rayonnants à double polarisation WO2022058009A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN202080105102.3A CN116097524A (zh) 2020-09-17 2020-09-17 天线系统和馈送双极化辐射元件的天线阵列的方法
PCT/EP2020/075923 WO2022058009A1 (fr) 2020-09-17 2020-09-17 Système d'antenne et procédé d'alimentation d'un réseau d'antennes d'éléments rayonnants à double polarisation
EP20775248.6A EP4208914A1 (fr) 2020-09-17 2020-09-17 Système d'antenne et procédé d'alimentation d'un réseau d'antennes d'éléments rayonnants à double polarisation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2020/075923 WO2022058009A1 (fr) 2020-09-17 2020-09-17 Système d'antenne et procédé d'alimentation d'un réseau d'antennes d'éléments rayonnants à double polarisation

Publications (1)

Publication Number Publication Date
WO2022058009A1 true WO2022058009A1 (fr) 2022-03-24

Family

ID=72561773

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2020/075923 WO2022058009A1 (fr) 2020-09-17 2020-09-17 Système d'antenne et procédé d'alimentation d'un réseau d'antennes d'éléments rayonnants à double polarisation

Country Status (3)

Country Link
EP (1) EP4208914A1 (fr)
CN (1) CN116097524A (fr)
WO (1) WO2022058009A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230216599A1 (en) * 2021-12-31 2023-07-06 T-Mobile Innovations Llc Polarization Division Multiple Access

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100225552A1 (en) * 2009-03-03 2010-09-09 Hitachi Cable, Ltd. Mobile communication base station antenna
US20110148730A1 (en) * 2009-12-18 2011-06-23 Kathrein-Werke Kg Dual-polarized group antenna

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104143699B (zh) * 2013-05-10 2017-02-15 中国电信股份有限公司 双极化天线及其制造方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100225552A1 (en) * 2009-03-03 2010-09-09 Hitachi Cable, Ltd. Mobile communication base station antenna
US20110148730A1 (en) * 2009-12-18 2011-06-23 Kathrein-Werke Kg Dual-polarized group antenna

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230216599A1 (en) * 2021-12-31 2023-07-06 T-Mobile Innovations Llc Polarization Division Multiple Access

Also Published As

Publication number Publication date
EP4208914A1 (fr) 2023-07-12
CN116097524A (zh) 2023-05-09

Similar Documents

Publication Publication Date Title
US11689263B2 (en) Small cell beam-forming antennas
CN109997277B (zh) 具有增强阵列间隔的基站天线系统及其操作方法
US8482478B2 (en) MIMO antenna system
JP4430699B2 (ja) アンテナアパーチャを任意に用いる統合形送信／受信アンテナ
CA2433437C (fr) Systeme de commmunication sans fil a entree multiple sortie multiple faisant appel a la diversite de polarisation
US7538740B2 (en) Multiple-element antenna array for communication network
US20050259005A1 (en) Beam forming matrix-fed circular array system
US20210218141A1 (en) Antenna structure and electronic device including the same
KR20210093136A (ko) 쿼드 편파 안테나 모듈 어레이를 이용하여 빔들의 공간-편파 분리를 구현하는 fdd 방식의 안테나 장치
US10581501B2 (en) Flexible analog architecture for sectorization
EP4203192A1 (fr) Structure d'antenne et dispositif électronique la comprenant
WO2022058009A1 (fr) Système d'antenne et procédé d'alimentation d'un réseau d'antennes d'éléments rayonnants à double polarisation
US10425214B2 (en) Method and apparatus for millimeter-wave hybrid beamforming to form subsectors
US11133916B2 (en) Wireless communication system
WO2022033688A1 (fr) Réseau d'antennes
US20230253699A1 (en) Antenna device and base station with antenna device
GB2382229A (en) Adaptive antenna array with improved spatial diversity
JP7349568B2 (ja) クワッド偏波アンテナモジュールアレイを用いてビームの空間－偏波分離を具現するアンテナ装置
WO2023108630A1 (fr) Éléments rayonnants de type plaque à haute performance pour systèmes de communication mimo massifs
US20240014573A1 (en) Quad-polarized antenna array and spatial polarization separation using the same
US20230187844A1 (en) Antenna and electronic device including the same
WO2022260949A1 (fr) Systèmes et procédés pour générer des données d'étalonnage dans des modules d'antenne active ayant des réseaux de filtres côté antenne
CN117044128A (zh) 四极化天线阵列及利用其的波束空间极化分离
CN116803020A (zh) 无线收发装置及其波束成形方法
CN114946086A (zh) 利用四极化天线模块阵列实现波束的空间-极化分离的fdd方式的天线装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20775248

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2020775248

Country of ref document: EP

Effective date: 20230403

NENP Non-entry into the national phase

Ref country code: DE