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AU2002227047A1 - Radio frequency isolation card - Google Patents

Radio frequency isolation card

Info

Publication number
AU2002227047A1
AU2002227047A1 AU2002227047A AU2704702A AU2002227047A1 AU 2002227047 A1 AU2002227047 A1 AU 2002227047A1 AU 2002227047 A AU2002227047 A AU 2002227047A AU 2704702 A AU2704702 A AU 2704702A AU 2002227047 A1 AU2002227047 A1 AU 2002227047A1
Authority
AU
Australia
Prior art keywords
feedback
signal
port
antenna
radiator
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.)
Abandoned
Application number
AU2002227047A
Inventor
Joseph R. Ippolito
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.)
EMS Technologies Canada Ltd
Original Assignee
EMS Technologies Inc
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 EMS Technologies Inc filed Critical EMS Technologies Inc
Publication of AU2002227047A1 publication Critical patent/AU2002227047A1/en
Abandoned legal-status Critical Current

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
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
    • H01Q1/523—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas between antennas of an array
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
    • H01Q21/08—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a rectilinear path
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
    • H01Q21/26—Turnstile or like antennas comprising arrangements of three or more elongated elements disposed radially and symmetrically in a horizontal plane about a common centre

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Burglar Alarm Systems (AREA)
  • Waveguide Aerials (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Non-Reversible Transmitting Devices (AREA)
  • Inorganic Insulating Materials (AREA)

Abstract

One or more feedback elements generate a feedback signal in response to a transmitted signal outputted by each radiator of the antenna system. This feedback signal is received by each radiator, also described as a radiating element, and combined with any leakage signal present at the port of the antenna. Because the feedback signal and the leakage signal are set to the same frequency and are approximately 180 degrees out of phase, this signal summing operation serves to cancel both signals at the output port, thereby improving the port-to-port isolation characteristic of the antenna. Each feedback element can include a photo-etched planar metal strip supported by a planar dielectric card made from printed circuit board material. Such feedback elements can provide a high degree of repeatability and reliability in that the manufacturing of such feedback elements can be precisely controlled.
AU2002227047A 2000-11-17 2001-11-15 Radio frequency isolation card Abandoned AU2002227047A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US24953100P 2000-11-17 2000-11-17
US60249531 2000-11-17
PCT/US2001/044908 WO2002041451A1 (en) 2000-11-17 2001-11-15 Radio frequency isolation card

Publications (1)

Publication Number Publication Date
AU2002227047A1 true AU2002227047A1 (en) 2002-05-27

Family

ID=22943877

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2002227047A Abandoned AU2002227047A1 (en) 2000-11-17 2001-11-15 Radio frequency isolation card

Country Status (8)

Country Link
US (2) US6515633B2 (en)
EP (1) EP1334537B1 (en)
AT (1) ATE357752T1 (en)
AU (1) AU2002227047A1 (en)
CA (1) CA2429184C (en)
DE (1) DE60127438T2 (en)
ES (1) ES2284728T3 (en)
WO (1) WO2002041451A1 (en)

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US6891420B2 (en) * 2001-12-21 2005-05-10 Motorola, Inc. Method and apparatus for digital frequency synthesis
US7162000B2 (en) * 2002-01-16 2007-01-09 Motorola, Inc. Delay locked loop synthesizer with multiple outputs and digital modulation
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KR100846487B1 (en) * 2003-12-08 2008-07-17 삼성전자주식회사 Ultra-wideband antenna with isotropic radiation pattern
WO2005070022A2 (en) * 2004-01-22 2005-08-04 Hans Gregory Schantz Broadband electric-magnetic antenna apparatus and system
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CN1815811B (en) * 2005-01-31 2012-05-09 东南大学 Composite microband printing vibrator wide-band antenna
US7496379B2 (en) * 2005-04-22 2009-02-24 Kyocera Wireless Corp. System and method for providing SMS contact information to a wireless mobile device
CN107425296B (en) * 2005-07-22 2021-05-04 英特尔公司 Antenna device with staggered antenna elements
US7616168B2 (en) * 2005-08-26 2009-11-10 Andrew Llc Method and system for increasing the isolation characteristic of a crossed dipole pair dual polarized antenna
DE102005061636A1 (en) * 2005-12-22 2007-06-28 Kathrein-Werke Kg Antenna for base station of mobile radio antenna, has longitudinal and/or cross bars that are length-variable in direct or indirect manner by deviation and/or bending and/or deformation and curving
US7427966B2 (en) * 2005-12-28 2008-09-23 Kathrein-Werke Kg Dual polarized antenna
US7864130B2 (en) * 2006-03-03 2011-01-04 Powerwave Technologies, Inc. Broadband single vertical polarized base station antenna
WO2008109173A1 (en) * 2007-03-08 2008-09-12 Powerwave Technologies, Inc. Dual staggered vertically polarized variable azimuth beamwidth antenna for wireless network
US8330668B2 (en) * 2007-04-06 2012-12-11 Powerwave Technologies, Inc. Dual stagger off settable azimuth beam width controlled antenna for wireless network
EP2165388B1 (en) * 2007-06-13 2018-01-17 Intel Corporation Triple stagger offsetable azimuth beam width controlled antenna for wireless network
SE531633C2 (en) * 2007-09-24 2009-06-16 Cellmax Technologies Ab Antenna arrangement
US8508427B2 (en) 2008-01-28 2013-08-13 P-Wave Holdings, Llc Tri-column adjustable azimuth beam width antenna for wireless network
US7999756B2 (en) * 2008-02-29 2011-08-16 The Boeing Company Wideband antenna array
GB2458492A (en) * 2008-03-19 2009-09-23 Thales Holdings Uk Plc Antenna array with reduced mutual antenna element coupling
JP5386721B2 (en) * 2009-03-03 2014-01-15 日立金属株式会社 Mobile communication base station antenna
EP2226890A1 (en) * 2009-03-03 2010-09-08 Hitachi Cable, Ltd. Mobile communication base station antenna
TWI420739B (en) * 2009-05-21 2013-12-21 Ind Tech Res Inst Radiation pattern insulator and antenna system thereof and communication device using the antenna system
US8648759B2 (en) * 2011-09-30 2014-02-11 Raytheon Company Variable height radiating aperture
US20130082893A1 (en) * 2011-09-30 2013-04-04 Raytheon Company Co-phased, dual polarized antenna array with broadband and wide scan capability
US9276329B2 (en) * 2012-11-22 2016-03-01 Commscope Technologies Llc Ultra-wideband dual-band cellular basestation antenna
US9537209B2 (en) 2013-05-16 2017-01-03 Space Systems/Loral, Llc Antenna array with reduced mutual coupling between array elements
US9912053B2 (en) 2014-03-17 2018-03-06 Ubiquiti Networks, Inc. Array antennas having a plurality of directional beams
JP6325687B2 (en) * 2014-03-26 2018-05-16 華為技術有限公司Ｈｕａｗｅｉ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｃｏ．，Ｌｔｄ． base station
US9397404B1 (en) 2014-05-02 2016-07-19 First Rf Corporation Crossed-dipole antenna array structure
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KR102381296B1 (en) * 2014-10-20 2022-03-31 한국전자통신연구원 RFID reader antenna
US9979072B2 (en) * 2014-10-20 2018-05-22 Electronics And Telecommunications Research Institute RFID reader antenna
US10148012B2 (en) * 2015-02-13 2018-12-04 Commscope Technologies Llc Base station antenna with dummy elements between subarrays
WO2016137938A1 (en) 2015-02-23 2016-09-01 Ubiquiti Networks, Inc. Radio apparatuses for long-range communication of radio-frequency information
CN206743244U (en) 2015-10-09 2017-12-12 优倍快网络公司 Multiplexer device
EP3381084B1 (en) * 2015-11-25 2023-05-24 CommScope Technologies LLC Phased array antennas having decoupling units
CN105958213A (en) * 2016-05-09 2016-09-21 苏州集泰信息科技有限公司 Method of adjusting half-power lobe width of antenna array
CN107706529B (en) * 2016-08-08 2021-01-15 华为技术有限公司 Decoupling assembly, multi-antenna system and terminal
CN107785662B (en) * 2017-11-22 2023-10-13 广东通宇通讯股份有限公司 Base station antenna and isolation sheet thereof
CN108717999B (en) * 2018-04-25 2022-07-19 深圳三星通信技术研究有限公司 Isolation structure of large array antenna and antenna
CN111129677B (en) * 2018-10-31 2022-10-28 康普技术有限责任公司 Isolator for antenna system and related antenna system
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US6069590A (en) * 1998-02-20 2000-05-30 Ems Technologies, Inc. System and method for increasing the isolation characteristic of an antenna
US6034649A (en) * 1998-10-14 2000-03-07 Andrew Corporation Dual polarized based station antenna
ES2284728T3 (en) * 2000-11-17 2007-11-16 Andrew Corporation RADIO FREQUENCY INSULATION CARD.

Also Published As

Publication number Publication date
ATE357752T1 (en) 2007-04-15
EP1334537B1 (en) 2007-03-21
US20020101388A1 (en) 2002-08-01
DE60127438T2 (en) 2007-11-29
ES2284728T3 (en) 2007-11-16
EP1334537A1 (en) 2003-08-13
CA2429184A1 (en) 2002-05-23
CA2429184C (en) 2008-06-17
US20030214452A1 (en) 2003-11-20
EP1334537A4 (en) 2004-12-01
WO2002041451A1 (en) 2002-05-23
DE60127438D1 (en) 2007-05-03
US6933905B2 (en) 2005-08-23
US6515633B2 (en) 2003-02-04

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