WO2014041414A1 - Antenne de chambre pour application wlan ou cellulaire - Google Patents

Antenne de chambre pour application wlan ou cellulaire Download PDF

Info

Publication number
WO2014041414A1
WO2014041414A1 PCT/IB2013/001977 IB2013001977W WO2014041414A1 WO 2014041414 A1 WO2014041414 A1 WO 2014041414A1 IB 2013001977 W IB2013001977 W IB 2013001977W WO 2014041414 A1 WO2014041414 A1 WO 2014041414A1
Authority
WO
WIPO (PCT)
Prior art keywords
antenna
vault
fringe
coupled
support structure
Prior art date
Application number
PCT/IB2013/001977
Other languages
English (en)
Inventor
Peter Frank
Roland A. Smith
Dave Pell
Stephen Rayment
Alain Brazeau
Triet Le
Original Assignee
Telefonaktiebolaget L M Ericsson (Publ)
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
Priority claimed from US13/609,971 external-priority patent/US20130120199A1/en
Application filed by Telefonaktiebolaget L M Ericsson (Publ) filed Critical Telefonaktiebolaget L M Ericsson (Publ)
Publication of WO2014041414A1 publication Critical patent/WO2014041414A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/04—Adaptation for subterranean or subaqueous use
    • 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
    • H01Q15/14—Reflecting surfaces; Equivalent structures
    • H01Q15/16—Reflecting surfaces; Equivalent structures curved in two dimensions, e.g. paraboloidal
    • H01Q15/165—Reflecting surfaces; Equivalent structures curved in two dimensions, e.g. paraboloidal composed of a plurality of rigid panels
    • 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
    • H01Q19/104—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 using a substantially flat reflector for deflecting the radiated beam, e.g. periscopic antennas
    • 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
    • H01Q19/106—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 using two or more intersecting plane surfaces, e.g. corner reflector antennas
    • 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
    • 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
    • H01Q21/08—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a rectilinear path

Definitions

  • the present invention provides an innovative antenna system for underground vaults. It addresses the important requirement of ground level azimuth coverage, while providing the means to achieve elevation coverage as required. It also addresses the means of mass producing low cost antenna solutions for widespread microcell deployments while addressing the technical issues associated with underground vaults.
  • Ground level vaults are widely employed by service providers such as cable television providers, or telephone providers, to access buried plant equipment and cable. These vaults are typically positioned to be flush with the ground level, and are found throughout metropolitan areas where cable or telecom equipment is located.
  • the present invention provides a means of providing repeatable and optimized radio frequency (RF) coverage using vaults as the source of the radiating element.
  • RF radio frequency
  • good RF coverage usually relies on antennas to be mounted at high elevations, such as on a pole or roof top.
  • Most cities have hundreds or thousands of cell towers or roof top "macro-cells" consisting of high powered transmitters of 40 W-per-radio channel with large high gain antennas. These macro-cells provide cellular coverage extending hundreds to thousands of meters.
  • Wireless LAN systems have risen as a disruptive technology to cellular systems.
  • WLAN systems employ unlicensed spectrum and offer data throughput levels which are two orders of magnitude higher than commercially deployed cellular systems.
  • WLAN systems also have lower transmitter power (i.e., typically less than 4 W EIRP) and operate in an uncontrolled unlicensed spectrum and cannot readily be deployed using macro cells roof tops or cell towers.
  • Outdoor WLAN systems have typically been deployed by attaching the WLAN transceivers to street light poles or handing these transceivers on cable plant in the same fashion that cable amplifiers or DSL repeaters are deployed and powered.
  • These WLAN systems typically provide coverage radii of hundreds of meters. Smaller cells have been deployed inside specific venues such as Starbucks or McDonald's. These coverage areas are very small - having radii in the range of tens of meters up to one hundred meters, but cost effective due to the low equipment costs of the WLAN transceivers.
  • the present invention addresses this shortcoming.
  • the invention provides a fringe-effect antenna module having coupling structure configured to couple the module to a communications vault disposed substantially at ground level.
  • a support structure is coupled to the coupling structure, and at least one antenna element is coupled to the support structure.
  • a metallic deflector is coupled to at least one of (i) the coupling structure and (ii) the support structure.
  • the metallic deflector has an edge, which is positioned substantially parallel to the ground. The metallic deflector and the edge are configured to cause a fringe effect upon the RF signals of the antenna to cause the RF signals to bend in a direction toward the ground.
  • the metallic deflector comprises an upside-down, frusto-rectangular shape having four sloped sides.
  • the fringe-effect vault antenna may further include a bell jar cover attached to the vault cover, the bell jar being configured to maintain an air pocket around the at least one antenna element.
  • a radome may be mounted beneath the bell jar cover.
  • the fringe-effect vault antenna may be selected from the group consisting of an omni-directional fringe-effect vault antenna, a directional fringe-effect vault antenna, a parabolic fringe-effect vault antenna, and a corner reflecting fringe-effect vault antenna.
  • a vault antenna module having a support structure including electronic circuitry.
  • Coupling structure is coupled to the support structure and is configured to couple to a substantially ground- level vault.
  • An antenna element is coupled to the support structure.
  • a deflector plate has at least one edge that is configured to bend RF signals to/from the antenna element in a direction substantially along the ground.
  • a cable connector is coupled to the support structure.
  • the invention provides a method of propagating RF signals to/from a substantially ground-level vault having an antenna element below ground level.
  • a support structure is coupled into the substantially ground-level vault, and a sloped deflector, coupled to the support structure, is disposed to intersect a main beam of the antenna element.
  • An edge of the deflector is disposed to cause a fringe effect on the RF signals of the antenna element to bend the RF signals in a direction toward the ground level.
  • the means of wired connectivity coupled into the module may be selected from the group consisting of DOCSIS, DSL, ADSL, HDSL, VDSL, EPON, GPON, Optical Ethernet, T1 , and E1.
  • the at least one antenna element may be configured to enable wide-band multi-carrier operation.
  • the at least one wireless transceiver may include a plurality of wireless transceivers, and the at least one antenna element may include a plurality of antenna elements, each of the plurality of antenna elements corresponding to a different one of the plurality of wireless transceivers.
  • Figure 1 illustrates several vault antenna locations used for simulations.
  • Figure 2 shows a graph of simulated vault antenna gains for the locations illustrated in Figure 1.
  • Figure 3 illustrates several vault antenna angles used for simulations.
  • Figure 4 shows a graph of simulated vault antenna gains for the angles illustrated in Figure 3.
  • Figure 5 illustrates several vault antenna locations together with a metal reflector for causing a fringe-effect according to a preferred embodiment of the present invention, as used for simulations.
  • Figure 6 shows a graph of simulated vault antenna gains for the locations and fringe effects illustrated in Figure 5.
  • Figure 7 illustrates a vault antenna configuration with a flat metal plate used as a reflector for causing a fringe-effect according to a preferred embodiment of the present invention.
  • Figure 8 shows a graph of simulated vault antenna gains for the antenna configuration illustrated in Figure 7.
  • Figure 9 illustrates several vault antenna tilt configurations for simulations.
  • Figure 10 shows a vault
  • Figure 1 1 shows the vault of Figure 10 with the cover removed, thereby exposing an omni-directional vault antenna.
  • Figure 12 shows an omni-directional vault antenna according to a preferred embodiment of the present invention.
  • Figure 13 shows a vault.
  • Figure 14 shows the vault of Figure 13 with the cover removed, thereby exposing a directional vault antenna according to a preferred embodiment of the present invention.
  • Figure 15 shows a perspective view of a lengthwise directional vault antenna according to a preferred embodiment of the present invention.
  • Figure 16 shows a profile view of a lengthwise directional vault antenna according to a preferred embodiment of the present invention.
  • Figure 17 shows a perspective view of a width-wise directional vault antenna according to a preferred embodiment of the present invention.
  • Figure 18 shows a profile view of a width-wise directional vault antenna according to a preferred embodiment of the present invention.
  • Figure 19 shows a perspective view of a vault.
  • Figure 20 shows a perspective view of the vault of Figure 19 with the cover removed, thereby exposing a directional vault antenna according to a preferred embodiment of the present invention.
  • Figure 21 shows a perspective view of the directional vault antenna of Figure 20 according to a preferred embodiment of the present invention.
  • Figure 22 shows a profile view of the directional vault antenna of Figure 20 according to a preferred embodiment of the present invention.
  • Figure 23 shows a profile view of width-wise directional vault antennas with the deflectors having parabolic and corner reflector profiles.
  • Figure 24 shows a perspective view of a fringe-effect antenna module according to the present invention, showing the bell-jar covering.
  • Figure 25 shows a perspective view of the Figure 24
  • Figure 26 shows a perspective view of a fringe-effect antenna module according to the present invention installed in a third-party vault.
  • Figure 27 shows a top view of the Fig. 26 embodiment.
  • Figure 28 is a perspective, close-up view of the Fig. 26 embodiment.
  • Figures 29a and 29b are, respectively, end and side views of a further embodiment according to the present invention.
  • Figure 30 is a perspective view of the Figure 29a and 29b embodiment.
  • WLAN solutions have been deployed inside above ground pedestals and in above-ground cabinets. These solutions maximize cell coverage, achieving reaches of 150m - 300m depending on ground level clutter. Advanced multiple input - multiple output (MIMO) radio features and antennas can extend this coverage; and deployment redundancy is the main means used to ensure that clients using these systems are rarely affected by ground level propagation impairments.
  • MIMO multiple input - multiple output
  • the present invention addresses the specific aspect of ground level vaults as a means of providing WLAN coverage. These vaults have not typically been used in the cellular industry for outdoor coverage, and hence there has been no available literature or science developed for optimal radio or antenna solutions.
  • the key issue associated with using ground level vaults is the ability to provide ground level coverage - that is, the ability to provide acceptable antenna gain along the street so that pedestrians and local businesses will see radio coverage from the vault.
  • simulation tools have been used to simulate a variety of antenna solutions which could be readily deployed in the vault. The goal has been to achieve a coverage radius of greater than 100 meters of street level coverage from a single vault, so that specific venues could be covered in a cost-effective manner using a few wireless transceivers.
  • these transceivers employ DOCSIS 2.0 backhaul for connection to the Internet, and are plant-powered from 40-90VAC supplied over the main feeder networks of the cable service providers.
  • this system could employ DOCSIS 3.0, DSL, VDSL, HDSL or other means connected to the Internet, and could employ standard AC powering such as 100-240VAC, or higher voltage AC power such as 277, 374, 480, or 600VAC, or even pair-powered via ⁇ 37VDC or ⁇ 180VDC or other suitable power.
  • edge diffraction In outdoor deployments, RF signals can "fringe” or edge-diffract around buildings.
  • edge diffraction or the knife-edge effect
  • the knife-edge effect is explained by Huygens-Fresnel principle, which states that a well-defined obstruction to an electromagnetic wave acts as a secondary source, and creates a new wavefront. This new wavefront propagates into the geometric shadow area of the obstacle.
  • the term "fringe-effect” is used herein to describe edge diffraction or the knife-edge effect.
  • an innovative antenna system according to a preferred embodiments of the present invention has been designed and field- tested to verify functional operation.
  • the description below explains the important fringe effects which are utilized and the means by which they are incorporated into a vault antenna according to a preferred embodiment of the present invention.
  • the present invention provides important aspects of the fringe effect vault antenna, including details of the mounting bracket, such as the relative location and tilt of the antenna element.
  • the present invention may be implemented by using different types of vault covers from different manufacturers, such as plastic vault covers manufactured by Pencell or concrete vault covers manufactured by NewBasis. Potential variations of the vault antenna, which allow for different orientations of vaults and different directional and omni-directional antenna solutions for coverage, are also described. Elevation directed antennas for building coverage are also disclosed. MIMO vault antennas are also disclosed. -
  • the vault antenna there are at least two preferred embodiments of the vault antenna according to the present invention: the omni vault antenna and the directional vault antenna. Both preferred embodiments are intended for street coverage, although the directional vault antenna has multiple variations which enable coverage of tall buildings as well as street level coverage. These two embodiments are described below.
  • Alternative embodiments of the present invention include parabolic and corner reflector vault antennas, which are similar to the directional vault antenna, but for which the shape of the deflector bracket is either parabolic or V-shaped as a corner reflector.
  • Figure 23 shows the cross-section of how the deflector metal can be shaped to be a corner reflector or parabolic reflector.
  • An antenna 36 is directed towards the deflector/reflector 42, whose radiated fields are then reflected towards the fringe-edge 26.
  • An objective of these alternative embodiments of the present invention is to achieve both very high gain directional coverage of tall buildings by pointing the parabolic or corner reflector antenna with one or more antenna elements (for MIMO) at the building upper floors, while achieving a ground level fringe effect coverage for street level coverage. While most vaults will be at least partially below ground level (where the vault cover is slightly under ground), other implementations are contemplated where the cover is at ground level, or slightly above ground level. All such implementations are referred to as "substantially at ground level.”
  • the desired fringe- effect may be optimized by ensuring that the metal fringe completely covers the entire beamwidth of the signal azimuth for the received signal.
  • the curvature of the metal fringe may vary from a completely flat fringe, as illustrated in Figure 7, to any degree of curvature, as illustrated, for example, in Figure 5.
  • the tilt may be varied, as shown in Figure 9.
  • OMNI VAULT ANTENNA The omni vault antenna provides an effective means of omni-directional coverage of a street or open venue. This antenna is located in a ground level vault (where the top of the vault is at ground level, or slightly thereabove or therebelow; and the antenna is below ground level) and includes one or more omni-directional antennas mounted in a bracket which slopes upwards to the edge of the vault.
  • a vault 14 s typically at least partially (often completely) buried in the ground— either in a street, or in a sidewalk, or in soil.
  • the vault 14 is typically made of concrete or high strength plastic.
  • FIG 11 the vault 14 of Figure 10 is shown with the lid or cover 22 removed.
  • the vault antenna structure includes an omni antenna 12 in the center section of the vault 14, with a supporting metallic bracket 24 which slopes upward from the antenna element to guide the antenna signals upward and toward the edge 26 of the vault 14. The fringe effect is realized when the RF signals transitions across the top edge 26 of the metallic bracket 24.
  • Figure 12 shows a single omni antenna 12 in the center area, although for MIMO systems, multiple omni-directional antenna elements would typically be used in this area.
  • Drain holes 28 Surrounding the omni- directional antenna 12 are drain holes 28 which ensure that water does not pool around the antenna 12 when the vault 14 becomes flooded during rainy periods.
  • the antenna deflector plate 30 slopes upward towards the edges 26 of the vault cover 22 (not shown in Fig. 12).
  • this deflector plate 30 is made from aluminum sheet metal, substantially 1.5 mm to substantially 4.0 mm thick, but could be formed from any other metal or other radio reflective material, such as steel, metalized plastic, or a wire mesh product in which the mesh holes are small compared to the wavelength of the radio frequency signals being transmitted. While the bracket 24, edge 26, and plate 30 are shown as comprising one integral piece of metal, embodiments are contemplated wherein these pieces are separate and assembled on-site or in a manufacturing or assembly facility.
  • the omni-directional antenna 12 has an integrated plastic radome 32 which acts to protect the antenna element 12 from water ingress for the case where the vault becomes flooded, as vaults occasionally do.
  • a bell jar may be employed with attachment points either to the deflector plate, or to the vault cover.
  • the antenna deflector and bracket combination generally slopes upward and away from the antenna 12 with a largely continuous edge 26 just below the vault cover. The upward slope, combined with the largely continuous edge of the antenna being located at or near the ground level, diffracts the radio waves, causing them to bend towards the ground, thereby resulting in a higher effective antenna gain along the ground.
  • DIRECTIONAL VAULT ANTENNA DIRECTIONAL VAULT ANTENNA.
  • a directional vault antenna provides an effective means of directional coverage of a street or open venue.
  • This antenna located in a substantially ground level vault, includes one or more directional antenna elements mounted in a bracket which slopes upwards to the edge of the vault.
  • a vault 14 having a plastic reinforced cover 22 and a plastic base 34 is illustrated.
  • the vault 14 of Figure 13 is shown with the lid or cover 22 removed.
  • the vault antenna structure includes a directional antenna 36 in the middle of the vault, supported by the deflector bracket 38 which slopes upward from the antenna element to guide the antenna signals upward and toward the edge or lip 40 of the vault 14. The fringe effect occurs along the top edge 26 of the metallic bracket 38.
  • FIG. 15-22 perspective and profile views of several commercially available antennas 36 are shown.
  • the vaults are normally longer than they are wide, and are usually at least partially buried such that the longer dimension aligns with the direction of the street.
  • Two types of directional vault antennas, lengthwise-mount and widthwise- mount, offer flexibility as to the areas that can be targeted by the directional vault antenna, according to the preferred embodiments.
  • the directional vault antenna preferably includes a single directional antenna 36 in the center area 42, although for MI O systems, multiple directional antenna elements would typically be used.
  • the antenna deflector plate 44 slopes upward towards the desired top edge 26 of the vault. This deflector plate 44 uses radio reflecting materials similar to the omni-directional deflector bracket 24 described above.
  • a bell jar may be employed with attachment points either to the deflector plate or to the vault cover to ensure that water does not affect the antenna 36 or associated RF cable (not shown).
  • the directional antenna deflector bracket 48 generally slopes upward and away from the antenna 36 with a largely continuous edge 26 just below the vault cover.
  • One or more tilt structures 50 may be provided to tilt the antenna 36 (in azimuth and/or elevation) to beam-steer the RF signals as desired.
  • an adjusting mechanism 52 may be provided to change the angle, elevation, slope, and/or the position of the plate 44 in order to adjust adjusting or steer the main beam of the antenna 36.
  • an active high-power vault antenna that does not include a metal edge deflector may be provided.
  • a Wi-FiTM transceiver that uses a vault antenna may be implemented, provided that sufficient gain can be obtained with a vault antenna that does not include a metal edge diffractor. If the antenna in Figure 1 is replaced with an active high-power antenna, the gain may be sufficient at all required elevation angles.
  • an RF transceiver using an antenna may be implemented.
  • Such a transceiver may be implemented as a multiband transceiver, a multicarrier transceiver system, or as a multiband, multicarrier transceiver system.
  • an installation kit or module according to the present invention may be installed in a third-party vault.
  • the kit or module 200 includes mounting brackets 250, 252, 254, and 256, which are (preferably) removably affixed to a bell jar covering 257 via structure such as screws 259a and 259b.
  • the bell jar covering 257 is preferably made of plastic or fiberglass and is preferably is sealed to keep the contents water-proof in case of flooding of the below-ground-level vault.
  • the brackets 250, 252, 254, and 256 are configured to be (preferably) removably coupled to an inside of the third-party vault, as will be described in more detail below.
  • the module 200 is preferably compact in size, measuring
  • the module 200 is shown with the bell jar covering 257 removed.
  • the mounting brackets 250, 252, 254, and 256 are (preferably) removably coupled to a bottom of an electronics unit support structure 246 (to be described in greater detail blow).
  • a coaxial cable connector 281 is disposed at one end of the support structure 246, and a radome 280 covers the antennas (also to be described below).
  • Detents 283 are provided around the periphery of the radome 280 to accommodate screws which couple the radome to the support structure 246.
  • the module 240 is installed in third-party vault 241 via the mounting brackets 250, 252, 254, and 256 (which may comprise one, two, three, four, or more bracket pieces).
  • These brackets may be made of metal and/or plastic, and may be affixed to the vault 244 via screws, bolts/nuts, interference-fit, tongue-in-slots, etc.
  • Affixed to the brackets is the electronics unit support structure 246, which has antenna elements 242a, 242b, 242c, 242d, 242e, and 242f coupled to a top side thereof.
  • any number of antenna elements may be used and may be arrayed in a multiple in-line configuration (in two perpendicular directions as shown in Figure 26), in a single in-line configuration, in a staggered configuration, or in a combined in-line and staggered configuration.
  • the antenna elements may comprise one or more omni-directional antenna elements and/or one or more directional antenna elements.
  • the plural antennas may support a multi-chain (e.g., 3-4 chains) MIMO configuration.
  • Figure 26 also shows an antenna deflector plate 230, which may be coupled to the support structure 246 and/or the brackets 250, 252, 254, and/or 256.
  • the upper edges of the deflector plate 230 provide a fringe-effect to RF signals communicated to/from the antenna elements 242a, 242b, 242c, 242d, 242e and/or 242f, so as to "bend" the RF signals in a direction more parallel to the ground.
  • the antenna deflector plate 230 shown in Figure 26 is an upside- down, frusto-rectangular shape having four sloped sides, but may comprise a square, a trapezoid, or any shape useful to provide fringe-effect to the RF signals communicated to/from the antenna elements.
  • the electronics unit support structure 246 preferably comprises a cast-metal structure configured to contain electronic circuitry such as a transmitter, a receiver, a processor, a memory, a power supply, a cable- connection, etc.
  • the electronics unit support structure 246 may contain circuitry similar to that described in U.S. Patent Nos. 8,254,865; 8,189,551 ; 8,009,562; 7,693,105; 7,660,559; and 7,164,667, each of which is incorporated herein by reference.
  • the electronics unit support structure 246 may also include plural cooling fins 262 ( Figure 26 and 28) configured to carry heat away from the electronic circuitry within the support structure 246.
  • Figure 27 is a top view of the Fig. 26 embodiment showing the brackets 250, 252, 254, and 256 connected to the inside surfaces of the vault 241.
  • the brackets 250, 252, 254, and 256 preferably come in different sizes and/or are modifiable so as to mount the module 200 inside a wide variety of third party vaults having different interior dimensions, and many of which contain other electronics modules.
  • the support structure 246 is shown to have an irregular outline, but any convenient shape may be used.
  • the metal deflector plate 230 (Fig. 28) has a slightly smaller outline than the support element 246, and encloses the antenna elements 242a, 242b, 242c, 242d, 242e, and 242f.
  • Figure 28 shows perspective view of a further variant of the Fig. 26 embodiment.
  • the deflector plate 230 has plural peripheral cut-outs 231 , which are adapted to fit the detents 283 in the radome 280, as shown in Figure 25.
  • Figures 29a and 29b are, respectively, end and side views of a further embodiment according to the present invention.
  • the support element 246 is mounted inside an enclosure 274, which includes a box-shaped bottom portion 275 and the deflector 230 (which are, preferably, integral).
  • Antenna elements 242a, 242f, and 242e are shown, while further (optional) antenna elements 242i, 242j, and 242k are also shown.
  • the top of the enclosure 274 is substantially adjacent to ground level, as discussed above.
  • the bent-angled portions 295 are differently-angled portions of the periphery of the upper edge of deflector plate 230, which are added for structural rigidity at the peripheral edge.
  • Figure 30 is a perspective view of the Figure 29a and 29b embodiment.
  • the enclosure 274 holds the support element 246 and has the deflector 230 extending up and away from the box-shaped bottom portion 275.
  • the bent-angled portions 295 are shown at two places on each of the four top sides of the deflector 230. Of course more or fewer than two bent- angled portions per side could be used.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Aerials With Secondary Devices (AREA)

Abstract

La présente invention porte sur un module d'antenne à effet de franges qui comprend une structure de couplage configurée pour coupler le module à une chambre de communication qui est disposée sensiblement au niveau du sol. Une structure de support (qui comprend de préférence une unité électronique) est couplée à la structure de couplage, et au moins un élément d'antenne est couplé à la structure de support. Un déflecteur métallique est couplé à au moins une structure parmi (i) la structure de couplage et (ii) la structure de support. Le déflecteur métallique a un bord qui est positionné sensiblement parallèle au sol afin de provoquer un effet de franges sur les signaux RF de l'antenne pour amener ces signaux RF à se courber dans une direction vers le sol.
PCT/IB2013/001977 2012-09-11 2013-09-11 Antenne de chambre pour application wlan ou cellulaire WO2014041414A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US13/609,971 2012-09-11
US13/609,971 US20130120199A1 (en) 2009-08-28 2012-09-11 Vault antenna for wlan or cellular application

Publications (1)

Publication Number Publication Date
WO2014041414A1 true WO2014041414A1 (fr) 2014-03-20

Family

ID=49886981

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2013/001977 WO2014041414A1 (fr) 2012-09-11 2013-09-11 Antenne de chambre pour application wlan ou cellulaire

Country Status (1)

Country Link
WO (1) WO2014041414A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020111993A1 (fr) * 2018-11-30 2020-06-04 Telefonaktiebolaget Lm Ericsson (Publ) Couvercle de coffre et procédé associé

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH118510A (ja) * 1997-06-16 1999-01-12 Nec Corp 電波チルト補助装置およびアンテナシステム
US7164667B2 (en) 2002-06-28 2007-01-16 Belair Networks Inc. Integrated wireless distribution and mesh backhaul networks
US7660559B2 (en) 2003-01-10 2010-02-09 Belair Networks Inc. Automatic antenna selection for mesh backhaul network nodes
WO2011022819A1 (fr) * 2009-08-28 2011-03-03 Belair Networks Inc. Antenne souterraine pour réseau local sans fil (wlan) ou application cellulaire
US8189551B2 (en) 2004-02-19 2012-05-29 Belair Networks Inc. Mobile station traffic routing
US8254865B2 (en) 2006-04-07 2012-08-28 Belair Networks System and method for frequency offsetting of information communicated in MIMO-based wireless networks
WO2012113397A1 (fr) * 2011-02-24 2012-08-30 Miitors Aps Dispositif de redirection passive pour la communication avec un compteur de consommation

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH118510A (ja) * 1997-06-16 1999-01-12 Nec Corp 電波チルト補助装置およびアンテナシステム
US7164667B2 (en) 2002-06-28 2007-01-16 Belair Networks Inc. Integrated wireless distribution and mesh backhaul networks
US7693105B2 (en) 2002-06-28 2010-04-06 Belair Networks Inc. Integrated wireless distribution and mesh backhaul networks
US8009562B2 (en) 2002-06-28 2011-08-30 Belair Networks Inc. Integrated wireless distribution and mesh backhaul networks
US7660559B2 (en) 2003-01-10 2010-02-09 Belair Networks Inc. Automatic antenna selection for mesh backhaul network nodes
US8189551B2 (en) 2004-02-19 2012-05-29 Belair Networks Inc. Mobile station traffic routing
US8254865B2 (en) 2006-04-07 2012-08-28 Belair Networks System and method for frequency offsetting of information communicated in MIMO-based wireless networks
WO2011022819A1 (fr) * 2009-08-28 2011-03-03 Belair Networks Inc. Antenne souterraine pour réseau local sans fil (wlan) ou application cellulaire
WO2012113397A1 (fr) * 2011-02-24 2012-08-30 Miitors Aps Dispositif de redirection passive pour la communication avec un compteur de consommation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020111993A1 (fr) * 2018-11-30 2020-06-04 Telefonaktiebolaget Lm Ericsson (Publ) Couvercle de coffre et procédé associé

Similar Documents

Publication Publication Date Title
US8686909B2 (en) Vault antenna for WLAN or cellular application
US8816907B2 (en) System and method for high performance beam forming with small antenna form factor
EP3190663A1 (fr) Antenne comprenant un interrupteur de faisceau pour augmenter le débit
US6088002A (en) Antenna system
US11258182B2 (en) Meta-structure based reflectarrays for enhanced wireless applications
US20120154239A1 (en) Millimeter wave radio assembly with a compact antenna
CN109586043A (zh) 用于减少向上定向的辐射的带有透镜的基站天线
CN104145372A (zh) 用于模块化多扇区有源天线系统的装置和方法
US20220278740A1 (en) Meta-structure wireless infrastructure for beamforming systems
US20190221913A1 (en) Small modular cell pole
KR20100051840A (ko) 셀룰러 및 점대점 통신이 가능한 안테나
KR20170046206A (ko) 태양광 모듈형 안테나
US20130120199A1 (en) Vault antenna for wlan or cellular application
WO2014041414A1 (fr) Antenne de chambre pour application wlan ou cellulaire
JPWO2011024722A1 (ja) アンテナ装置
JP5123751B2 (ja) 遮蔽体およびレピータ局
Manholm et al. Deployment considerations for 60 GHz backhaul using smart street furniture
KR200472775Y1 (ko) 고층 빌딩 서비스가 가능한 안테나와 중계기를 갖는 공중전화 부스
KR100994554B1 (ko) 옴니 가변 안테나
JP2004023257A (ja) アンテナ装置
Johansson et al. Modular high-gain antennas

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: 13815115

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 13815115

Country of ref document: EP

Kind code of ref document: A1