EP0746880A1 - Microwave antennas - Google Patents

Microwave antennas

Info

Publication number
EP0746880A1
EP0746880A1 EP95909057A EP95909057A EP0746880A1 EP 0746880 A1 EP0746880 A1 EP 0746880A1 EP 95909057 A EP95909057 A EP 95909057A EP 95909057 A EP95909057 A EP 95909057A EP 0746880 A1 EP0746880 A1 EP 0746880A1
Authority
EP
European Patent Office
Prior art keywords
planar members
antenna
membrane
thickness
waveguide
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP95909057A
Other languages
German (de)
French (fr)
Other versions
EP0746880B1 (en
Inventor
John Louis Frederick Charles Collins
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FORTEL TECHNOLOGY Ltd
Original Assignee
FORTEL TECHNOLOGY 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
Priority claimed from GB9403752A external-priority patent/GB9403752D0/en
Priority claimed from GB9409692A external-priority patent/GB9409692D0/en
Application filed by FORTEL TECHNOLOGY Ltd filed Critical FORTEL TECHNOLOGY Ltd
Publication of EP0746880A1 publication Critical patent/EP0746880A1/en
Application granted granted Critical
Publication of EP0746880B1 publication Critical patent/EP0746880B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
    • H01Q21/061—Two dimensional planar arrays
    • H01Q21/064—Two dimensional planar arrays using horn or slot aerials
    • 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
    • H01Q21/0087—Apparatus or processes specially adapted for manufacturing antenna arrays

Definitions

  • This invention relates to antennas, particularly (but not exclusively) planar antennas for receiving microwave signals such as direct broadcasting by satellite (DBS) signals.
  • DBS satellite
  • planar antennas comprising an array of horns communicating with one or more waveguide systems, and in which the horns and waveguides are formed from a sandwich of moulded planar members.
  • the planar members may be plastics mouldings with electrically conductive surfaces formed by metallisation. See for example my published International Patent Applications WO89/09501 and WO91/20109.
  • the present invention provides an antenna comprising a plurality of generally planar members secured together in face-to-face relationship to form an array of cavities and a waveguide system, each cavity being in communication with at least one waveguide channel, each of the planar members having a given overall thickness transverse to its principal plane, said thickness being constituted by a membrane of relatively small thickness formed three- dimensionally in a generally corrugated fashion.
  • each of the planar members is a vacuum forming.
  • each of the planar members is formed by vacuum forming a plastics material and thereafter metallising at least one side of the vacuum formed material.
  • the present invention provides a method of manufacturing an antenna, comprising forming a plurality of generally planar members, each of the planar members having a given overall thickness transverse to its principal plane, said thickness being constituted by a membrane of relatively small thickness formed three-dimensionally in a generally corrugated fashion, positioning the planar members in face-to-face relationship to form an array of cavities and a waveguide system, each cavity being in communication with at least one waveguide channel, and securing the planar members together.
  • planar members are secured together by ultrasonic welding; for this purpose the mating faces of the planar members may be provided with ribs or the like which fuse to form weld beads during the ultrasonic welding.
  • Fig. 1 is an isometric view, sectioned along a transverse plane, of an antenna element according to the present invention
  • Fig. 2 shows part of Fig. 1 in greater detail, to an enlarged scale
  • Fig. 3 illustrates a preferred means used in securing together parts of the assembly of Figs. and 2
  • Fig. 4 is a plan view illustrating the construction of a modified form of waveguide channel
  • Fig. 5 is an enlarged cross-sectional scrap view on the line 5-5 of Fig. 4.
  • an antenna element generally designated at 10 is in the form of a 4x4 array of receiving horns 12.
  • the element 10 would be assembled with like elements to provide a larger array as a single antenna.
  • the antenna element 10 comprises five generally planar members 14 - 22.
  • the first planar member 14 is formed to provide the horns 12, each of which is of tapering square section, terminating in a lower wall 24 and circular aperture 26.
  • the second and third planar members 16, 18 together define cylindrical cavities 28 aligned with the circular apertures 26, and first closed, rectangular section channels 30 extending along the length of the antenna element 10.
  • the cavities 28 terminate in a plane partial end wall 32 defining a D-shaped slot 34.
  • the fourth and fifth planar members 20, 22 together define bottom sections 36 to the horn cavities, and second closed, rectangular section passages 38.
  • Each bottom section 36 has an upper part 39 corresponding to the D-shaped slots 34, and a lower part 40 forming an open-topped channel communicating with one of the second passages 38.
  • the first channels 30 communicate with the cavities 26 by means of passageways 40 as indicated in Fig. 2.
  • Each of the planar members 14 - 22 is separately formed by vacuum forming of a suitable plastics material. Techniques of and materials for vacuum forming are well known per se and will not therefore be described in detail herein.
  • the walls of the horns, cavities and channels have the effect of providing a corrugated formation to each member, thus giving a reasonable degree of rigidity which is increased when the five members are secured together.
  • each member After vacuum forming, one side, as appropriate, of each member is metallised in any suitable fashion, and thus when the members are secured together the surfaces of the horns, cavities and channels which are adjacent the received microwave radiation are conductive metallised surfaces.
  • the channels 30 and 38 thus act as waveguides for differently polarised microwave signals separated by the conformation of the cavities 26, as is known per se.
  • the five members may be secured together in any suitable manner.
  • they may be secured together by adhesive.
  • the mating faces such as the lower face 50 of the first member 14 and the upper face 52 of the second member 16, are provided with ribs 54 which fuse to form continuous welded beads during ultrasonic welding.
  • FIGs. 4 and 5 there is illustrated an alternative construction of a moulded element 60 which partially defines the wave guides, for example in substitution for the element 22 in the above embodiment.
  • Fig. 4 shows a 12 x 12 array, but it will be understood that the arrangement can be applied to any desired size of array.
  • the element 60 is once again a vacuum forming in which a single membrane of material is formed to provide upper faces 62 and lower faces 64 joined by side webs 65 to define waveguide channels 66.
  • the upper faces 62 are defined only as flanges in the vicinity of the waveguide channels 66, and elsewhere the material is cut away to form void spaces 68.
  • This configuration is particularly efficient and results in a weight reduction of approximately 30%.
  • the particular design minimises the extent of area which requires to be metallised.

Abstract

A microwave antenna (10) is formed from a stack of generally planar elements (14-22) forming an array of horns (12) communicating with waveguides (38). The generally planar elements (14-22) are of metallised plastics. Each of these elements (14-22) has a given overall thickness which is constituted by a membrane of relatively small thickness formed (typically by vacuum forming) into a corrugated shape.

Description

"Microwave Antennas"
This invention relates to antennas, particularly (but not exclusively) planar antennas for receiving microwave signals such as direct broadcasting by satellite (DBS) signals.
There are known planar antennas comprising an array of horns communicating with one or more waveguide systems, and in which the horns and waveguides are formed from a sandwich of moulded planar members. The planar members may be plastics mouldings with electrically conductive surfaces formed by metallisation. See for example my published International Patent Applications WO89/09501 and WO91/20109.
While antennas of the foregoing type have proved successful, there is a need for further improvement with a view to ease of mass manufacture and reduction in manufacturing cost.
Accordingly, the present invention provides an antenna comprising a plurality of generally planar members secured together in face-to-face relationship to form an array of cavities and a waveguide system, each cavity being in communication with at least one waveguide channel, each of the planar members having a given overall thickness transverse to its principal plane, said thickness being constituted by a membrane of relatively small thickness formed three- dimensionally in a generally corrugated fashion.
Preferably, each of the planar members is a vacuum forming.
Preferably, each of the planar members is formed by vacuum forming a plastics material and thereafter metallising at least one side of the vacuum formed material.
From another aspect, the present invention provides a method of manufacturing an antenna, comprising forming a plurality of generally planar members, each of the planar members having a given overall thickness transverse to its principal plane, said thickness being constituted by a membrane of relatively small thickness formed three-dimensionally in a generally corrugated fashion, positioning the planar members in face-to-face relationship to form an array of cavities and a waveguide system, each cavity being in communication with at least one waveguide channel, and securing the planar members together.
In a preferred form of the invention, the planar members are secured together by ultrasonic welding; for this purpose the mating faces of the planar members may be provided with ribs or the like which fuse to form weld beads during the ultrasonic welding. Embodiments of the present invention will now be described, by way of example only, with reference to the drawings, in which:
Fig. 1 is an isometric view, sectioned along a transverse plane, of an antenna element according to the present invention; Fig. 2 shows part of Fig. 1 in greater detail, to an enlarged scale; Fig. 3 illustrates a preferred means used in securing together parts of the assembly of Figs. and 2; Fig. 4 is a plan view illustrating the construction of a modified form of waveguide channel; and Fig. 5 is an enlarged cross-sectional scrap view on the line 5-5 of Fig. 4.
Referring particularly to Figs. 1 and 2, an antenna element generally designated at 10 is in the form of a 4x4 array of receiving horns 12. In practice, the element 10 would be assembled with like elements to provide a larger array as a single antenna. The antenna element 10 comprises five generally planar members 14 - 22.
The first planar member 14 is formed to provide the horns 12, each of which is of tapering square section, terminating in a lower wall 24 and circular aperture 26.
The second and third planar members 16, 18 together define cylindrical cavities 28 aligned with the circular apertures 26, and first closed, rectangular section channels 30 extending along the length of the antenna element 10. The cavities 28 terminate in a plane partial end wall 32 defining a D-shaped slot 34.
The fourth and fifth planar members 20, 22 together define bottom sections 36 to the horn cavities, and second closed, rectangular section passages 38. Each bottom section 36 has an upper part 39 corresponding to the D-shaped slots 34, and a lower part 40 forming an open-topped channel communicating with one of the second passages 38.
The first channels 30 communicate with the cavities 26 by means of passageways 40 as indicated in Fig. 2.
Each of the planar members 14 - 22 is separately formed by vacuum forming of a suitable plastics material. Techniques of and materials for vacuum forming are well known per se and will not therefore be described in detail herein. The walls of the horns, cavities and channels have the effect of providing a corrugated formation to each member, thus giving a reasonable degree of rigidity which is increased when the five members are secured together.
After vacuum forming, one side, as appropriate, of each member is metallised in any suitable fashion, and thus when the members are secured together the surfaces of the horns, cavities and channels which are adjacent the received microwave radiation are conductive metallised surfaces. The channels 30 and 38 thus act as waveguides for differently polarised microwave signals separated by the conformation of the cavities 26, as is known per se.
The five members may be secured together in any suitable manner. For example, they may be secured together by adhesive. A preferred feature of the present invention, however, is to secure the planar members together by means of ultrasonic welding. For this purpose, as illustrated in Fig. 3, the mating faces such as the lower face 50 of the first member 14 and the upper face 52 of the second member 16, are provided with ribs 54 which fuse to form continuous welded beads during ultrasonic welding.
Referring to Figs. 4 and 5, there is illustrated an alternative construction of a moulded element 60 which partially defines the wave guides, for example in substitution for the element 22 in the above embodiment.
Fig. 4 shows a 12 x 12 array, but it will be understood that the arrangement can be applied to any desired size of array.
The element 60 is once again a vacuum forming in which a single membrane of material is formed to provide upper faces 62 and lower faces 64 joined by side webs 65 to define waveguide channels 66. In this embodiment, however, the upper faces 62 are defined only as flanges in the vicinity of the waveguide channels 66, and elsewhere the material is cut away to form void spaces 68.
This configuration is particularly efficient and results in a weight reduction of approximately 30%. In addition, the particular design minimises the extent of area which requires to be metallised.

Claims

1. An antenna comprising a plurality of generally planar members secured together in face-to-face relationship to form an array of cavities and a waveguide system, each cavity being in communication with at least one waveguide channel, each of the planar members having a given overall thickness transverse to its principal plane, said thickness being constituted by a membrane of relatively small thickness formed three- dimensionally in a generally corrugated fashion.
2. An antenna according to claim 1, in which each of the planar members is a vacuum forming.
3. An antenna according to claim 2, in which each of the planar members is formed by vacuum forming a plastics material and thereafter metallising at least one side of the vacuum formed material.
4. An antenna according to any preceding claim, in which each of said membranes is continuous across the whole area of the antenna.
5. An antenna according to any of claims 1 to 3, in which the waveguide channel is partially defined by one said membrane which is cut away to form void spaces in areas of the membrane not immediately adjacent the waveguide channel.
6. A method of manufacturing an antenna, comprising forming a plurality of generally planar members, each of the planar members having a given overall thickness transverse to its principal plane, said thickness being constituted by a membrane of relatively small thickness formed three- dimensionally in a generally corrugated fashion, positioning the planar members in face-to-face relationship to form an array of cavities and a waveguide system, each cavity being in communication with at least one waveguide channel, and securing the planar members together.
5. A method according to claim 4, in which the planar members are secured together by ultrasonic welding.
6. A method according to claim 5, in which the mating faces of the planar members are provided with ribs or the like which fuse to form weld beads during the ultrasonic welding.
EP95909057A 1994-02-26 1995-02-24 Microwave antennas Expired - Lifetime EP0746880B1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
GB9403752 1994-02-26
GB9403752A GB9403752D0 (en) 1994-02-26 1994-02-26 Microwave antennas
GB9409692 1994-05-14
GB9409692A GB9409692D0 (en) 1994-05-14 1994-05-14 Microwave antennas
PCT/GB1995/000398 WO1995023440A1 (en) 1994-02-26 1995-02-24 Microwave antennas

Publications (2)

Publication Number Publication Date
EP0746880A1 true EP0746880A1 (en) 1996-12-11
EP0746880B1 EP0746880B1 (en) 2001-06-27

Family

ID=26304396

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95909057A Expired - Lifetime EP0746880B1 (en) 1994-02-26 1995-02-24 Microwave antennas

Country Status (13)

Country Link
EP (1) EP0746880B1 (en)
JP (1) JPH10500261A (en)
KR (1) KR100342111B1 (en)
CN (1) CN1075253C (en)
AT (1) ATE202658T1 (en)
AU (1) AU1715595A (en)
CA (1) CA2184080A1 (en)
DE (1) DE69521497T2 (en)
DK (1) DK0746880T3 (en)
ES (1) ES2160698T3 (en)
GR (1) GR3036740T3 (en)
PT (1) PT746880E (en)
WO (1) WO1995023440A1 (en)

Families Citing this family (139)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9703748D0 (en) 1997-02-22 1997-04-09 Fortel International Limited Microwave antennas
US6034647A (en) * 1998-01-13 2000-03-07 Raytheon Company Boxhorn array architecture using folded junctions
EP1448959B1 (en) * 2001-11-26 2006-09-13 Vega Grieshaber KG Horn antenna for a level measuring device
US7109939B2 (en) 2002-05-14 2006-09-19 Hrl Laboratories, Llc Wideband antenna array
WO2008069358A1 (en) * 2006-12-08 2008-06-12 Idoit Co., Ltd. Horn array type antenna for dual linear polarization
WO2008102987A1 (en) * 2007-02-21 2008-08-28 Idoit Co., Ltd. Horn array type antenna for dual linear polarization
KR20080105856A (en) * 2007-06-01 2008-12-04 주식회사 아이두잇 Horn array type antenna for dual linear polarization
WO2009031794A1 (en) * 2007-09-03 2009-03-12 Idoit Co., Ltd. Horn array type antenna for dual linear polarization
KR101546777B1 (en) * 2007-09-03 2015-08-25 주식회사 아이두잇 Dual linear polarization horn array type antenna using skew filter
KR20090024039A (en) 2007-09-03 2009-03-06 주식회사 아이두잇 Horn array type antenna for dual linear polarization
WO2009078630A1 (en) * 2007-12-14 2009-06-25 Idoit Co., Ltd. Horn array type antenna with skew filter
WO2009093779A1 (en) * 2008-01-25 2009-07-30 Microface Co., Ltd Feeding network structure for flat type antenna
KR101536341B1 (en) * 2008-12-05 2015-07-15 주식회사 아이두잇 Adapter for antenna
KR101405294B1 (en) 2011-06-09 2014-06-11 위월드 주식회사 Ultra wideband dual linear polarization waveguide antenna for communication
CN103022719A (en) * 2012-12-26 2013-04-03 浙江大学 Vehicle-borne STOM (satcom on the move) array antenna with gain increased by lightweight dielectric lens
US9525524B2 (en) 2013-05-31 2016-12-20 At&T Intellectual Property I, L.P. Remote distributed antenna system
US9999038B2 (en) 2013-05-31 2018-06-12 At&T Intellectual Property I, L.P. Remote distributed antenna system
US8897697B1 (en) 2013-11-06 2014-11-25 At&T Intellectual Property I, Lp Millimeter-wave surface-wave communications
US9768833B2 (en) 2014-09-15 2017-09-19 At&T Intellectual Property I, L.P. Method and apparatus for sensing a condition in a transmission medium of electromagnetic waves
US10063280B2 (en) 2014-09-17 2018-08-28 At&T Intellectual Property I, L.P. Monitoring and mitigating conditions in a communication network
US9615269B2 (en) 2014-10-02 2017-04-04 At&T Intellectual Property I, L.P. Method and apparatus that provides fault tolerance in a communication network
US9685992B2 (en) 2014-10-03 2017-06-20 At&T Intellectual Property I, L.P. Circuit panel network and methods thereof
US9503189B2 (en) 2014-10-10 2016-11-22 At&T Intellectual Property I, L.P. Method and apparatus for arranging communication sessions in a communication system
US9973299B2 (en) 2014-10-14 2018-05-15 At&T Intellectual Property I, L.P. Method and apparatus for adjusting a mode of communication in a communication network
US9769020B2 (en) 2014-10-21 2017-09-19 At&T Intellectual Property I, L.P. Method and apparatus for responding to events affecting communications in a communication network
US9577306B2 (en) 2014-10-21 2017-02-21 At&T Intellectual Property I, L.P. Guided-wave transmission device and methods for use therewith
US9627768B2 (en) 2014-10-21 2017-04-18 At&T Intellectual Property I, L.P. Guided-wave transmission device with non-fundamental mode propagation and methods for use therewith
US9780834B2 (en) 2014-10-21 2017-10-03 At&T Intellectual Property I, L.P. Method and apparatus for transmitting electromagnetic waves
US9653770B2 (en) 2014-10-21 2017-05-16 At&T Intellectual Property I, L.P. Guided wave coupler, coupling module and methods for use therewith
US9312919B1 (en) 2014-10-21 2016-04-12 At&T Intellectual Property I, Lp Transmission device with impairment compensation and methods for use therewith
US9997819B2 (en) 2015-06-09 2018-06-12 At&T Intellectual Property I, L.P. Transmission medium and method for facilitating propagation of electromagnetic waves via a core
US10009067B2 (en) 2014-12-04 2018-06-26 At&T Intellectual Property I, L.P. Method and apparatus for configuring a communication interface
US9742462B2 (en) 2014-12-04 2017-08-22 At&T Intellectual Property I, L.P. Transmission medium and communication interfaces and methods for use therewith
US9544006B2 (en) 2014-11-20 2017-01-10 At&T Intellectual Property I, L.P. Transmission device with mode division multiplexing and methods for use therewith
US9461706B1 (en) 2015-07-31 2016-10-04 At&T Intellectual Property I, Lp Method and apparatus for exchanging communication signals
US10243784B2 (en) 2014-11-20 2019-03-26 At&T Intellectual Property I, L.P. System for generating topology information and methods thereof
US10340573B2 (en) 2016-10-26 2019-07-02 At&T Intellectual Property I, L.P. Launcher with cylindrical coupling device and methods for use therewith
US9800327B2 (en) 2014-11-20 2017-10-24 At&T Intellectual Property I, L.P. Apparatus for controlling operations of a communication device and methods thereof
US9954287B2 (en) 2014-11-20 2018-04-24 At&T Intellectual Property I, L.P. Apparatus for converting wireless signals and electromagnetic waves and methods thereof
US9876570B2 (en) 2015-02-20 2018-01-23 At&T Intellectual Property I, Lp Guided-wave transmission device with non-fundamental mode propagation and methods for use therewith
US9749013B2 (en) 2015-03-17 2017-08-29 At&T Intellectual Property I, L.P. Method and apparatus for reducing attenuation of electromagnetic waves guided by a transmission medium
US9705561B2 (en) 2015-04-24 2017-07-11 At&T Intellectual Property I, L.P. Directional coupling device and methods for use therewith
US10224981B2 (en) 2015-04-24 2019-03-05 At&T Intellectual Property I, Lp Passive electrical coupling device and methods for use therewith
US9793954B2 (en) 2015-04-28 2017-10-17 At&T Intellectual Property I, L.P. Magnetic coupling device and methods for use therewith
US9748626B2 (en) 2015-05-14 2017-08-29 At&T Intellectual Property I, L.P. Plurality of cables having different cross-sectional shapes which are bundled together to form a transmission medium
US9490869B1 (en) 2015-05-14 2016-11-08 At&T Intellectual Property I, L.P. Transmission medium having multiple cores and methods for use therewith
US9871282B2 (en) 2015-05-14 2018-01-16 At&T Intellectual Property I, L.P. At least one transmission medium having a dielectric surface that is covered at least in part by a second dielectric
US10650940B2 (en) 2015-05-15 2020-05-12 At&T Intellectual Property I, L.P. Transmission medium having a conductive material and methods for use therewith
US9917341B2 (en) 2015-05-27 2018-03-13 At&T Intellectual Property I, L.P. Apparatus and method for launching electromagnetic waves and for modifying radial dimensions of the propagating electromagnetic waves
US9866309B2 (en) 2015-06-03 2018-01-09 At&T Intellectual Property I, Lp Host node device and methods for use therewith
US10812174B2 (en) 2015-06-03 2020-10-20 At&T Intellectual Property I, L.P. Client node device and methods for use therewith
US9912381B2 (en) 2015-06-03 2018-03-06 At&T Intellectual Property I, Lp Network termination and methods for use therewith
US9913139B2 (en) 2015-06-09 2018-03-06 At&T Intellectual Property I, L.P. Signal fingerprinting for authentication of communicating devices
US9820146B2 (en) 2015-06-12 2017-11-14 At&T Intellectual Property I, L.P. Method and apparatus for authentication and identity management of communicating devices
US9667317B2 (en) 2015-06-15 2017-05-30 At&T Intellectual Property I, L.P. Method and apparatus for providing security using network traffic adjustments
US9509415B1 (en) 2015-06-25 2016-11-29 At&T Intellectual Property I, L.P. Methods and apparatus for inducing a fundamental wave mode on a transmission medium
US9865911B2 (en) 2015-06-25 2018-01-09 At&T Intellectual Property I, L.P. Waveguide system for slot radiating first electromagnetic waves that are combined into a non-fundamental wave mode second electromagnetic wave on a transmission medium
US9640850B2 (en) 2015-06-25 2017-05-02 At&T Intellectual Property I, L.P. Methods and apparatus for inducing a non-fundamental wave mode on a transmission medium
US10044409B2 (en) 2015-07-14 2018-08-07 At&T Intellectual Property I, L.P. Transmission medium and methods for use therewith
US10148016B2 (en) 2015-07-14 2018-12-04 At&T Intellectual Property I, L.P. Apparatus and methods for communicating utilizing an antenna array
US9853342B2 (en) 2015-07-14 2017-12-26 At&T Intellectual Property I, L.P. Dielectric transmission medium connector and methods for use therewith
US10205655B2 (en) 2015-07-14 2019-02-12 At&T Intellectual Property I, L.P. Apparatus and methods for communicating utilizing an antenna array and multiple communication paths
US9628116B2 (en) 2015-07-14 2017-04-18 At&T Intellectual Property I, L.P. Apparatus and methods for transmitting wireless signals
US9722318B2 (en) 2015-07-14 2017-08-01 At&T Intellectual Property I, L.P. Method and apparatus for coupling an antenna to a device
US9847566B2 (en) 2015-07-14 2017-12-19 At&T Intellectual Property I, L.P. Method and apparatus for adjusting a field of a signal to mitigate interference
US9882257B2 (en) 2015-07-14 2018-01-30 At&T Intellectual Property I, L.P. Method and apparatus for launching a wave mode that mitigates interference
US9793951B2 (en) 2015-07-15 2017-10-17 At&T Intellectual Property I, L.P. Method and apparatus for launching a wave mode that mitigates interference
US10090606B2 (en) 2015-07-15 2018-10-02 At&T Intellectual Property I, L.P. Antenna system with dielectric array and methods for use therewith
US9948333B2 (en) 2015-07-23 2018-04-17 At&T Intellectual Property I, L.P. Method and apparatus for wireless communications to mitigate interference
US9871283B2 (en) 2015-07-23 2018-01-16 At&T Intellectual Property I, Lp Transmission medium having a dielectric core comprised of plural members connected by a ball and socket configuration
US9912027B2 (en) 2015-07-23 2018-03-06 At&T Intellectual Property I, L.P. Method and apparatus for exchanging communication signals
US9749053B2 (en) 2015-07-23 2017-08-29 At&T Intellectual Property I, L.P. Node device, repeater and methods for use therewith
US9967173B2 (en) 2015-07-31 2018-05-08 At&T Intellectual Property I, L.P. Method and apparatus for authentication and identity management of communicating devices
US9735833B2 (en) 2015-07-31 2017-08-15 At&T Intellectual Property I, L.P. Method and apparatus for communications management in a neighborhood network
US9904535B2 (en) 2015-09-14 2018-02-27 At&T Intellectual Property I, L.P. Method and apparatus for distributing software
US9769128B2 (en) 2015-09-28 2017-09-19 At&T Intellectual Property I, L.P. Method and apparatus for encryption of communications over a network
US9729197B2 (en) 2015-10-01 2017-08-08 At&T Intellectual Property I, L.P. Method and apparatus for communicating network management traffic over a network
US9876264B2 (en) 2015-10-02 2018-01-23 At&T Intellectual Property I, Lp Communication system, guided wave switch and methods for use therewith
US10355367B2 (en) 2015-10-16 2019-07-16 At&T Intellectual Property I, L.P. Antenna structure for exchanging wireless signals
US9860075B1 (en) 2016-08-26 2018-01-02 At&T Intellectual Property I, L.P. Method and communication node for broadband distribution
US10340600B2 (en) 2016-10-18 2019-07-02 At&T Intellectual Property I, L.P. Apparatus and methods for launching guided waves via plural waveguide systems
US10135146B2 (en) 2016-10-18 2018-11-20 At&T Intellectual Property I, L.P. Apparatus and methods for launching guided waves via circuits
US10135147B2 (en) 2016-10-18 2018-11-20 At&T Intellectual Property I, L.P. Apparatus and methods for launching guided waves via an antenna
US9876605B1 (en) 2016-10-21 2018-01-23 At&T Intellectual Property I, L.P. Launcher and coupling system to support desired guided wave mode
US10374316B2 (en) 2016-10-21 2019-08-06 At&T Intellectual Property I, L.P. System and dielectric antenna with non-uniform dielectric
US9991580B2 (en) 2016-10-21 2018-06-05 At&T Intellectual Property I, L.P. Launcher and coupling system for guided wave mode cancellation
US10811767B2 (en) 2016-10-21 2020-10-20 At&T Intellectual Property I, L.P. System and dielectric antenna with convex dielectric radome
US10312567B2 (en) 2016-10-26 2019-06-04 At&T Intellectual Property I, L.P. Launcher with planar strip antenna and methods for use therewith
US10225025B2 (en) 2016-11-03 2019-03-05 At&T Intellectual Property I, L.P. Method and apparatus for detecting a fault in a communication system
US10498044B2 (en) 2016-11-03 2019-12-03 At&T Intellectual Property I, L.P. Apparatus for configuring a surface of an antenna
US10224634B2 (en) 2016-11-03 2019-03-05 At&T Intellectual Property I, L.P. Methods and apparatus for adjusting an operational characteristic of an antenna
US10291334B2 (en) 2016-11-03 2019-05-14 At&T Intellectual Property I, L.P. System for detecting a fault in a communication system
US10535928B2 (en) 2016-11-23 2020-01-14 At&T Intellectual Property I, L.P. Antenna system and methods for use therewith
US10178445B2 (en) 2016-11-23 2019-01-08 At&T Intellectual Property I, L.P. Methods, devices, and systems for load balancing between a plurality of waveguides
US10090594B2 (en) 2016-11-23 2018-10-02 At&T Intellectual Property I, L.P. Antenna system having structural configurations for assembly
US10340603B2 (en) 2016-11-23 2019-07-02 At&T Intellectual Property I, L.P. Antenna system having shielded structural configurations for assembly
US10340601B2 (en) 2016-11-23 2019-07-02 At&T Intellectual Property I, L.P. Multi-antenna system and methods for use therewith
US10305190B2 (en) 2016-12-01 2019-05-28 At&T Intellectual Property I, L.P. Reflecting dielectric antenna system and methods for use therewith
US10361489B2 (en) 2016-12-01 2019-07-23 At&T Intellectual Property I, L.P. Dielectric dish antenna system and methods for use therewith
DE102016014385A1 (en) 2016-12-02 2018-06-07 Kathrein-Werke Kg Dual polarized horn
US10326494B2 (en) 2016-12-06 2019-06-18 At&T Intellectual Property I, L.P. Apparatus for measurement de-embedding and methods for use therewith
US10637149B2 (en) 2016-12-06 2020-04-28 At&T Intellectual Property I, L.P. Injection molded dielectric antenna and methods for use therewith
US10755542B2 (en) 2016-12-06 2020-08-25 At&T Intellectual Property I, L.P. Method and apparatus for surveillance via guided wave communication
US10135145B2 (en) 2016-12-06 2018-11-20 At&T Intellectual Property I, L.P. Apparatus and methods for generating an electromagnetic wave along a transmission medium
US10382976B2 (en) 2016-12-06 2019-08-13 At&T Intellectual Property I, L.P. Method and apparatus for managing wireless communications based on communication paths and network device positions
US10727599B2 (en) 2016-12-06 2020-07-28 At&T Intellectual Property I, L.P. Launcher with slot antenna and methods for use therewith
US10694379B2 (en) 2016-12-06 2020-06-23 At&T Intellectual Property I, L.P. Waveguide system with device-based authentication and methods for use therewith
US9927517B1 (en) 2016-12-06 2018-03-27 At&T Intellectual Property I, L.P. Apparatus and methods for sensing rainfall
US10439675B2 (en) 2016-12-06 2019-10-08 At&T Intellectual Property I, L.P. Method and apparatus for repeating guided wave communication signals
US10819035B2 (en) 2016-12-06 2020-10-27 At&T Intellectual Property I, L.P. Launcher with helical antenna and methods for use therewith
US10020844B2 (en) 2016-12-06 2018-07-10 T&T Intellectual Property I, L.P. Method and apparatus for broadcast communication via guided waves
US10547348B2 (en) 2016-12-07 2020-01-28 At&T Intellectual Property I, L.P. Method and apparatus for switching transmission mediums in a communication system
US10359749B2 (en) 2016-12-07 2019-07-23 At&T Intellectual Property I, L.P. Method and apparatus for utilities management via guided wave communication
US10243270B2 (en) 2016-12-07 2019-03-26 At&T Intellectual Property I, L.P. Beam adaptive multi-feed dielectric antenna system and methods for use therewith
US10446936B2 (en) 2016-12-07 2019-10-15 At&T Intellectual Property I, L.P. Multi-feed dielectric antenna system and methods for use therewith
US10139820B2 (en) 2016-12-07 2018-11-27 At&T Intellectual Property I, L.P. Method and apparatus for deploying equipment of a communication system
US10168695B2 (en) 2016-12-07 2019-01-01 At&T Intellectual Property I, L.P. Method and apparatus for controlling an unmanned aircraft
US10027397B2 (en) 2016-12-07 2018-07-17 At&T Intellectual Property I, L.P. Distributed antenna system and methods for use therewith
US9893795B1 (en) 2016-12-07 2018-02-13 At&T Intellectual Property I, Lp Method and repeater for broadband distribution
US10389029B2 (en) 2016-12-07 2019-08-20 At&T Intellectual Property I, L.P. Multi-feed dielectric antenna system with core selection and methods for use therewith
US9998870B1 (en) 2016-12-08 2018-06-12 At&T Intellectual Property I, L.P. Method and apparatus for proximity sensing
US10938108B2 (en) 2016-12-08 2021-03-02 At&T Intellectual Property I, L.P. Frequency selective multi-feed dielectric antenna system and methods for use therewith
US10326689B2 (en) 2016-12-08 2019-06-18 At&T Intellectual Property I, L.P. Method and system for providing alternative communication paths
US10069535B2 (en) 2016-12-08 2018-09-04 At&T Intellectual Property I, L.P. Apparatus and methods for launching electromagnetic waves having a certain electric field structure
US10916969B2 (en) 2016-12-08 2021-02-09 At&T Intellectual Property I, L.P. Method and apparatus for providing power using an inductive coupling
US9911020B1 (en) 2016-12-08 2018-03-06 At&T Intellectual Property I, L.P. Method and apparatus for tracking via a radio frequency identification device
US10389037B2 (en) 2016-12-08 2019-08-20 At&T Intellectual Property I, L.P. Apparatus and methods for selecting sections of an antenna array and use therewith
US10601494B2 (en) 2016-12-08 2020-03-24 At&T Intellectual Property I, L.P. Dual-band communication device and method for use therewith
US10411356B2 (en) 2016-12-08 2019-09-10 At&T Intellectual Property I, L.P. Apparatus and methods for selectively targeting communication devices with an antenna array
US10777873B2 (en) 2016-12-08 2020-09-15 At&T Intellectual Property I, L.P. Method and apparatus for mounting network devices
US10103422B2 (en) 2016-12-08 2018-10-16 At&T Intellectual Property I, L.P. Method and apparatus for mounting network devices
US10530505B2 (en) 2016-12-08 2020-01-07 At&T Intellectual Property I, L.P. Apparatus and methods for launching electromagnetic waves along a transmission medium
US10340983B2 (en) 2016-12-09 2019-07-02 At&T Intellectual Property I, L.P. Method and apparatus for surveying remote sites via guided wave communications
US9838896B1 (en) 2016-12-09 2017-12-05 At&T Intellectual Property I, L.P. Method and apparatus for assessing network coverage
US10264586B2 (en) 2016-12-09 2019-04-16 At&T Mobility Ii Llc Cloud-based packet controller and methods for use therewith
US9973940B1 (en) 2017-02-27 2018-05-15 At&T Intellectual Property I, L.P. Apparatus and methods for dynamic impedance matching of a guided wave launcher
US10298293B2 (en) 2017-03-13 2019-05-21 At&T Intellectual Property I, L.P. Apparatus of communication utilizing wireless network devices
US11876295B2 (en) * 2017-05-02 2024-01-16 Rogers Corporation Electromagnetic reflector for use in a dielectric resonator antenna system
DE102019203842A1 (en) * 2019-03-21 2020-09-24 Zf Friedrichshafen Ag Radar antenna structure and manufacturing method for manufacturing a radar antenna structure

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2523376A1 (en) * 1982-03-12 1983-09-16 Labo Electronique Physique RADIATION ELEMENT OR HYPERFREQUENCY SIGNAL RECEIVER WITH LEFT AND RIGHT CIRCULAR POLARIZATIONS AND FLAT ANTENNA COMPRISING A NETWORK OF SUCH JUXTAPOSED ELEMENTS
ATE158676T1 (en) * 1990-06-14 1997-10-15 John Louis Frederick C Collins ANTENNA IN THE SHAPE OF A FLAT PLATE
GB2247990A (en) * 1990-08-09 1992-03-18 British Satellite Broadcasting Antennas and method of manufacturing thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9523440A1 *

Also Published As

Publication number Publication date
DE69521497D1 (en) 2001-08-02
CA2184080A1 (en) 1995-08-31
ATE202658T1 (en) 2001-07-15
JPH10500261A (en) 1998-01-06
DK0746880T3 (en) 2002-01-07
KR100342111B1 (en) 2002-11-13
AU1715595A (en) 1995-09-11
EP0746880B1 (en) 2001-06-27
KR970701435A (en) 1997-03-17
GR3036740T3 (en) 2001-12-31
WO1995023440A1 (en) 1995-08-31
CN1075253C (en) 2001-11-21
PT746880E (en) 2001-12-28
CN1144019A (en) 1997-02-26
DE69521497T2 (en) 2002-05-29
ES2160698T3 (en) 2001-11-16

Similar Documents

Publication Publication Date Title
EP0746880B1 (en) Microwave antennas
US6225960B1 (en) Microwave antennas
EP0533810B1 (en) Microwave antennas
EP1109252A2 (en) Injection-molded phased array antenna system
GB2222725A (en) Microwave antenna
KR20090083458A (en) Coaxial line slot array antenna and method for manufacturing the same
JPH09326631A (en) Microwave planar array antenna
EP0661771B1 (en) Branching filter for transmitter-receiver
US6351244B1 (en) Arrangement for use in an antenna array for transmitting and receiving at at least one frequency in at least two polarizations
JPH04358405A (en) Waveguide slot array antenna
WO2008147132A1 (en) Horn array type antenna for dual linear polarization
US11444384B2 (en) Multiple-port radiating element
US20040113857A1 (en) Planar antenna with wave guide configuration
JPH01314405A (en) Waveguide type plane antenna
CA2140360C (en) A leaky waveguide structure and method of manufacturing the same
JPH053405A (en) Waveguide joint structure
JP3237809B2 (en) Planar antenna
JPH0450764B2 (en)
CA2146546C (en) Antenna array with a continuous transverse stub element
WO2001018911A1 (en) Distribution network and antenna arrangement comprising such a distribution network
JP2001044744A (en) Waveguide antenna
JPH05218715A (en) Waveguide body for plane antenna

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19960907

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE

17Q First examination report despatched

Effective date: 19971202

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE

REF Corresponds to:

Ref document number: 202658

Country of ref document: AT

Date of ref document: 20010715

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 69521497

Country of ref document: DE

Date of ref document: 20010802

ITF It: translation for a ep patent filed

Owner name: IPSER S.R.L.

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: KIRKER & CIE SA

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2160698

Country of ref document: ES

Kind code of ref document: T3

ET Fr: translation filed
REG Reference to a national code

Ref country code: PT

Ref legal event code: SC4A

Free format text: AVAILABILITY OF NATIONAL TRANSLATION

Effective date: 20010927

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20030205

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: PT

Payment date: 20030207

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20030210

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20030212

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DK

Payment date: 20030214

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GR

Payment date: 20030218

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20030219

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20030226

Year of fee payment: 9

Ref country code: ES

Payment date: 20030226

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 20030227

Year of fee payment: 9

Ref country code: IE

Payment date: 20030227

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: MC

Payment date: 20030228

Year of fee payment: 9

Ref country code: CH

Payment date: 20030228

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20030306

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20030425

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040224

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040224

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040224

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040224

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040225

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040225

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040228

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040229

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040229

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040301

BERE Be: lapsed

Owner name: *FORTEL TECHNOLOGY LTD

Effective date: 20040228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040901

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040901

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040903

REG Reference to a national code

Ref country code: DK

Ref legal event code: EBP

EUG Se: european patent has lapsed
GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20040224

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20041029

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20040901

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050224

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20040225