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SE547312C2 - An antenna module comprising a frequency selective surface layer mounted on an opening in a reflector - Google Patents

An antenna module comprising a frequency selective surface layer mounted on an opening in a reflector

Info

Publication number
SE547312C2
SE547312C2 SE2350856A SE2350856A SE547312C2 SE 547312 C2 SE547312 C2 SE 547312C2 SE 2350856 A SE2350856 A SE 2350856A SE 2350856 A SE2350856 A SE 2350856A SE 547312 C2 SE547312 C2 SE 547312C2
Authority
SE
Sweden
Prior art keywords
frequency band
antenna elements
reflector
antenna module
fss
Prior art date
Application number
SE2350856A
Other languages
Swedish (sv)
Other versions
SE2350856A1 (en
Inventor
Christian Sohl
Original Assignee
Kaelus Ab
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 Kaelus Ab filed Critical Kaelus Ab
Priority to SE2350856A priority Critical patent/SE547312C2/en
Priority to PCT/SE2024/050612 priority patent/WO2025010002A1/en
Publication of SE2350856A1 publication Critical patent/SE2350856A1/en
Publication of SE547312C2 publication Critical patent/SE547312C2/en

Links

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
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/30—Arrangements for providing operation on different wavebands
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/0006—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices
    • H01Q15/0013—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices said selective devices working as frequency-selective reflecting surfaces, e.g. FSS, dichroic plates, surfaces being partly transmissive and reflective
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
    • H01Q19/108—Combination of a dipole with a plane reflecting surface
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/30—Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome

Landscapes

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

Abstract

The technology disclosed relates to an antenna module (100) comprising at least one array of antenna elements (101), at least one layer (107) comprising a frequency selective surface configured to control the transmission and reflection of electromagnetic waves and a reflector (104) comprising an opening. According to technology disclosed, one of the at least one layer (107) comprising a frequency selective surface (FSS) is mounted on/to the opening in the reflector (104) and antenna elements (106) mounted on the at least one FSS layer (107) is capacitively coupled to conducting reflector surrounding the opening in the reflector (104).

Claims (1)

1. An antenna module (100; 200; 300; 400), comprising: at least one array of antenna elements (101; 201; 301; 401), a feed network for the at least one array of antenna elements, a reflector (104; 204; 307; 404), a frequency selective surface (FSS) layer (107; 207; 303; 405) configured to control the transmission and reflection of electromagnetic Waves and a radome configured to protect the at least one array of antenna elements of the antenna module from mechanical impact and Weather . \ . ~ \ ~ \ ~ .g ~- \ av; w ~- :x ~~\ v; .w \ f *i s' f* n sw-ï H .~\ v» y: 1A L. Asos: ä: L. <>_ Lux \.-.k.\š:z.k,l\.
1. uu \.- :ARN influences, Wherein an array of antenna elements is configured to operate at a first frequency band F1 and arranged to transmit in a transmitting direction, and said FSS layer (107; 207; 303; 405) is provided With bandstop and bandpass filtering characteristics in that said FSS layer is configured to be substantially transparent to an electromagnetic Wave having Wavelength Äg corresponding to a center frequency in a second frequency band Fg, corresponding to a bandpass frequency range, separate from the first frequency band F1 and in that the first frequency band Fl in Which said array of antenna elements operates is Within the stop-band frequencies of said FSS layer, and Wherein the reflector (104; 204; 307; 404) of the antenna module is provided With an opening and said FSS layer (107; 207; 303; 405) is mounted on the opening, and Wherein a plurality of antenna elements (106; 206; 301; 403) are mounted on said FSS layer in the opening so that they are surrounded by the conductive metal material of the reflector (104; 204; 307; 404) to thereby provide a reliable Radio Frequency (RF) grounding for said plurality of antenna elements mounted on the FSS layer,__¿ . The antenna module of claim 1, Wherein said opening is a rectangular cutout in the reflector (104; 204; 307; 404). . The antenna module of any of claims 1 and 2, Wherein the RF grounding of said FSS layer (107; 207; 303; 405) mounted on the opening of the reflector (104; 204; 307; 404) is capacitive in nature, and Wherein said FSS layer (107; 207; 303; 405) is capacitively coupled to ground along the edges of the reflector (104; 204; 307; 404) surrounding the opening so that said plurality of antenna elements (106; 206; 301; 403) mounted on the FSS layer (107; 207; 303; 405) thereby are capacitively coupled to ground. . The antenna module of any of claims 1 to 3, Wherein said plurality of antenna elements (106; 206; 301; 403) mounted on said FSS layer (107; 207; 303; 405) is a first subset of said array of antenna elements, and Wherein a second subset (105; 205; 402) of said array of antenna elements comprising a plurality of antenna elements operating at the first frequency band Fl are mounted on the reflector (104; 204; 307; 404). . The antenna module of claim 4, Wherein said first and second subset of antenna elements are configured to co-operate in that the FSS layer (107; 207; 303; 405) mounted on the opening of the reflector (104; 204; 307; 404) is capacitively coupled to ground along the edges of the reflector to the opening. . The antenna module of any of claims 4 to 5, Wherein the antenna module (100; 200; 300; 400) further comprises a layer (109; 209) of insulating material arranged along at least portions of the edges of the opening in the reflector between the FSS layer (107; 207; 303; 405) and the reflector (104; 204; 307; 404) to capacitively couple said first subset of antenna elements mounted on said FSS layer (107; 207; 303; 405) to ground so that said first subset of antenna elements (106; 206; 301; 403) can co-operate With said second subset of antenna elements (105; 205; 402) mounted on the reflector(104; 204; 307; 404), thereby providing for improved antenna gain for the array of antenna elements. The antenna module of any of claims 1 to 6, Wherein the antenna module (100; 200; 300; 400) further comprises a second FSS layer (102; 202; 302) physically separated from said (first) FSS layer (107; 207; 303; 405) mounted on the opening of the reflector and configured to also be substantially transparent to electromagnetic Waves having Wavelength A2 corresponding to a center frequency in the second frequency band Fg. The antenna module of claim 7, Wherein the first (107; 207; 303; 405) and second (102; 202; 302) FSS layers are separated by a distance that is partly maintained during operation of the antenna module by means of a foam material arranged between the first and second FSS layer and that provides mechanical stability to external forces. The antenna module of any of claims 7 and 8, Wherein the first (107; 207; 303; 405) and second (102; 202; 302) FSS layers are separated by a distance so that the combination of the two FSS layers is configured to be substantially transparent in at least one frequency band Fg outside the frequency band F1 in Which the array of antenna elements of the antenna module operates. 10.The antenna module of any of claims 1 to 9, Wherein the opening is surrounded by the conductive material of the reflector (104; 204; 307; 404), and Wherein the FSS layer is provided With conductive material arranged so that ground is at least one of discretely and continuously provided along the entire periphery of the FSS layer. The antenna module of any of claims 1 to 10, Wherein the second frequency band Fg is a higher frequency band than the first frequency band F1 and is non-overlapping With the first frequency band Fl. 12.The antenna module of any of claims 1 to 1 1, Wherein the antenna module (100; 200; 300; 400) further comprises a second array of antenna elements(21 1; 212; 213) configured to operate at a third frequency band F3 Well- separated from both the first frequency band F1 and the second frequency band Fg, and Wherein at least some of the antenna elements of the second array of antenna elements are also arranged on the (first) FSS layer (107; 207; 303; 405) and configured to transmit in the same transmitting direction as the first array of antenna elements. 13.The antenna module of claim 12, Wherein the second frequency band Fg, is a higher frequency band than the first frequency band F1 and is non- overlapping With both the first frequency band F1 and the second frequency band F2_
SE2350856A 2023-07-06 2023-07-06 An antenna module comprising a frequency selective surface layer mounted on an opening in a reflector SE547312C2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE2350856A SE547312C2 (en) 2023-07-06 2023-07-06 An antenna module comprising a frequency selective surface layer mounted on an opening in a reflector
PCT/SE2024/050612 WO2025010002A1 (en) 2023-07-06 2024-06-20 A base station antenna module comprising a frequency selective surface layer mounted on an opening in a reflector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE2350856A SE547312C2 (en) 2023-07-06 2023-07-06 An antenna module comprising a frequency selective surface layer mounted on an opening in a reflector

Publications (2)

Publication Number Publication Date
SE2350856A1 SE2350856A1 (en) 2025-01-07
SE547312C2 true SE547312C2 (en) 2025-07-01

Family

ID=94172464

Family Applications (1)

Application Number Title Priority Date Filing Date
SE2350856A SE547312C2 (en) 2023-07-06 2023-07-06 An antenna module comprising a frequency selective surface layer mounted on an opening in a reflector

Country Status (2)

Country Link
SE (1) SE547312C2 (en)
WO (1) WO2025010002A1 (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020200476A1 (en) * 2019-04-05 2020-10-08 Huawei Technologies Co., Ltd. A multiband antenna system and method for providing the same
WO2021195040A2 (en) * 2020-03-24 2021-09-30 Commscope Technologies Llc Base station antennas having an active antenna module and related devices and methods
US20220239008A1 (en) * 2019-10-18 2022-07-28 Huawei Technologies Co., Ltd. Common aperture antenna and communication device
CN217361908U (en) * 2022-05-24 2022-09-02 罗森伯格技术有限公司 Frequency selective surface for an antenna and antenna system
US20230059532A1 (en) * 2020-03-24 2023-02-23 Commscope Technologies Llc Radiating elements having angled feed stalks and base station antennas including same
WO2023029431A1 (en) * 2021-08-31 2023-03-09 Commscope Technologies Llc Base station antennas having at least one grid reflector and related devices
EP4195413A1 (en) * 2020-08-24 2023-06-14 Huawei Technologies Co., Ltd. Multi-band antenna system and base station

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115483543A (en) * 2021-06-15 2022-12-16 上海诺基亚贝尔股份有限公司 Antenna module and method for manufacturing the same
WO2023146720A1 (en) * 2022-01-27 2023-08-03 Commscope Technologies Llc Base station antennas
EP4246712A1 (en) * 2022-03-16 2023-09-20 Nokia Shanghai Bell Co., Ltd. Antenna module and manufacturing method thereof

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020200476A1 (en) * 2019-04-05 2020-10-08 Huawei Technologies Co., Ltd. A multiband antenna system and method for providing the same
US20220239008A1 (en) * 2019-10-18 2022-07-28 Huawei Technologies Co., Ltd. Common aperture antenna and communication device
WO2021195040A2 (en) * 2020-03-24 2021-09-30 Commscope Technologies Llc Base station antennas having an active antenna module and related devices and methods
US20230056237A1 (en) * 2020-03-24 2023-02-23 Commscope Technologies Llc Base station antennas having an active antenna module and related devices and methods
US20230059532A1 (en) * 2020-03-24 2023-02-23 Commscope Technologies Llc Radiating elements having angled feed stalks and base station antennas including same
EP4195413A1 (en) * 2020-08-24 2023-06-14 Huawei Technologies Co., Ltd. Multi-band antenna system and base station
WO2023029431A1 (en) * 2021-08-31 2023-03-09 Commscope Technologies Llc Base station antennas having at least one grid reflector and related devices
CN217361908U (en) * 2022-05-24 2022-09-02 罗森伯格技术有限公司 Frequency selective surface for an antenna and antenna system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Y. F. Cao et al., "Compact Shared-Aperture Dual-Band Dual-Polarized Array Using Filtering Slot Antenna and Dual-Function Metasurface," in: IEEE Transactions on Antennas and Propagation, vol. 70, no. 2, pp. 1120-1131, Feb. 2022, doi: 10.1109/TAP.2021.3111179 *

Also Published As

Publication number Publication date
WO2025010002A1 (en) 2025-01-09
SE2350856A1 (en) 2025-01-07

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