ATE364934T1 - Näherungsdetektionsgerät - Google Patents

Näherungsdetektionsgerät

Info

Publication number
ATE364934T1
ATE364934T1 AT04768125T AT04768125T ATE364934T1 AT E364934 T1 ATE364934 T1 AT E364934T1 AT 04768125 T AT04768125 T AT 04768125T AT 04768125 T AT04768125 T AT 04768125T AT E364934 T1 ATE364934 T1 AT E364934T1
Authority
AT
Austria
Prior art keywords
receiver
radio frequency
signals
radio
frequency receiver
Prior art date
Application number
AT04768125T
Other languages
English (en)
Inventor
Tony Richards
Steve Fitz
Original Assignee
Plextek Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Plextek Ltd filed Critical Plextek Ltd
Application granted granted Critical
Publication of ATE364934T1 publication Critical patent/ATE364934T1/de

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/20—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium
    • H04B5/24—Inductive coupling
    • H04B5/26—Inductive coupling using coils
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S11/00—Systems for determining distance or velocity not using reflection or reradiation
    • G01S11/02—Systems for determining distance or velocity not using reflection or reradiation using radio waves
    • G01S11/06—Systems for determining distance or velocity not using reflection or reradiation using radio waves using intensity measurements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0802—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection
    • H04B7/0822—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection according to predefined selection scheme

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Near-Field Transmission Systems (AREA)
  • Circuits Of Receivers In General (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
AT04768125T 2003-08-19 2004-08-19 Näherungsdetektionsgerät ATE364934T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB0319518.7A GB0319518D0 (en) 2003-08-19 2003-08-19 Location monitoring apparatus

Publications (1)

Publication Number Publication Date
ATE364934T1 true ATE364934T1 (de) 2007-07-15

Family

ID=28052812

Family Applications (1)

Application Number Title Priority Date Filing Date
AT04768125T ATE364934T1 (de) 2003-08-19 2004-08-19 Näherungsdetektionsgerät

Country Status (7)

Country Link
US (1) US20070188375A1 (de)
EP (1) EP1658681B1 (de)
AT (1) ATE364934T1 (de)
DE (1) DE602004007013T2 (de)
DK (1) DK1658681T3 (de)
GB (1) GB0319518D0 (de)
WO (1) WO2005020449A2 (de)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2428342B (en) * 2005-07-12 2007-05-23 Robotics Ltd Const Proximity sensing
EP2002671A4 (de) * 2006-04-03 2015-07-15 Eckey Corp Verfahren zur bestimmung der nähe zwischen hf-geräten und steuerschaltern
US7479871B2 (en) * 2006-06-21 2009-01-20 Mednovus, Inc. Radio frequency warning system for ferromagnetic threats
KR100790084B1 (ko) * 2006-08-08 2008-01-02 삼성전자주식회사 블루투스 단말의 거리 측정 방법 및 장치
US9563576B1 (en) * 2006-08-31 2017-02-07 Daniel J. Horon Area-limited software utility
US9774086B2 (en) * 2007-03-02 2017-09-26 Qualcomm Incorporated Wireless power apparatus and methods
US8270905B1 (en) * 2007-10-02 2012-09-18 Plantroncis, Inc. Near-far sensing using frequency swept RSSI
US8417296B2 (en) * 2008-06-05 2013-04-09 Apple Inc. Electronic device with proximity-based radio power control
US8432322B2 (en) * 2009-07-17 2013-04-30 Apple Inc. Electronic devices with capacitive proximity sensors for proximity-based radio-frequency power control
US8466839B2 (en) * 2009-07-17 2013-06-18 Apple Inc. Electronic devices with parasitic antenna resonating elements that reduce near field radiation
US8781420B2 (en) 2010-04-13 2014-07-15 Apple Inc. Adjustable wireless circuitry with antenna-based proximity detector
US8577289B2 (en) 2011-02-17 2013-11-05 Apple Inc. Antenna with integrated proximity sensor for proximity-based radio-frequency power control
US9093745B2 (en) 2012-05-10 2015-07-28 Apple Inc. Antenna and proximity sensor structures having printed circuit and dielectric carrier layers
US9300342B2 (en) 2013-04-18 2016-03-29 Apple Inc. Wireless device with dynamically adjusted maximum transmit powers
US9379445B2 (en) 2014-02-14 2016-06-28 Apple Inc. Electronic device with satellite navigation system slot antennas
US9398456B2 (en) 2014-03-07 2016-07-19 Apple Inc. Electronic device with accessory-based transmit power control
US9559425B2 (en) 2014-03-20 2017-01-31 Apple Inc. Electronic device with slot antenna and proximity sensor
US9583838B2 (en) 2014-03-20 2017-02-28 Apple Inc. Electronic device with indirectly fed slot antennas
US9728858B2 (en) 2014-04-24 2017-08-08 Apple Inc. Electronic devices with hybrid antennas
US9791490B2 (en) 2014-06-09 2017-10-17 Apple Inc. Electronic device having coupler for tapping antenna signals
US9444425B2 (en) 2014-06-20 2016-09-13 Apple Inc. Electronic device with adjustable wireless circuitry
CN107004108B (zh) * 2014-11-25 2020-02-04 夏普株式会社 通信装置、显示装置以及通信系统
US10218052B2 (en) 2015-05-12 2019-02-26 Apple Inc. Electronic device with tunable hybrid antennas
US20180347752A1 (en) * 2015-11-25 2018-12-06 VHS IP Pty Ltd Worksite safety device using lidar
US10490881B2 (en) 2016-03-10 2019-11-26 Apple Inc. Tuning circuits for hybrid electronic device antennas
JP6771955B2 (ja) * 2016-06-06 2020-10-21 キヤノン株式会社 通信装置及びその制御方法、並びにプログラム
US10290946B2 (en) 2016-09-23 2019-05-14 Apple Inc. Hybrid electronic device antennas having parasitic resonating elements
JP6690609B2 (ja) * 2017-04-06 2020-04-28 株式会社村田製作所 磁界発生回路

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1257692A (de) * 1969-07-28 1971-12-22
CA1050140A (en) * 1975-12-19 1979-03-06 National Research Council Of Canada Vlf radio position location system
US4147973A (en) * 1976-12-20 1979-04-03 Weber Harold J Frequency dependent amplitude modulated translator apparatus
US4396918A (en) * 1981-03-06 1983-08-02 The United States Of America As Represented By The Administrator Of The National Aeronautics & Space Administration Low-frequency radio navigation system
DE3719179C1 (en) * 1987-06-09 1988-12-15 Goetting Kg Arrangement for determining the separation between vehicles moving one behind the other
US5218344A (en) * 1991-07-31 1993-06-08 Ricketts James G Method and system for monitoring personnel
US5357253A (en) * 1993-04-02 1994-10-18 Earth Sounding International System and method for earth probing with deep subsurface penetration using low frequency electromagnetic signals
FR2725036A1 (fr) * 1994-09-22 1996-03-29 Oyo Corp Emetteur pour systeme de mesure de tomographie electromagnetique et procede de mise en oeuvre
US5714932A (en) * 1996-02-27 1998-02-03 Radtronics, Inc. Radio frequency security system with direction and distance locator
GB9605335D0 (en) * 1996-03-13 1996-05-15 Central Research Lab Ltd Data communication system
US6134420A (en) * 1996-11-01 2000-10-17 Plantronics, Inc. Vector measuring aerial arrays for magnetic induction communication systems
GB2335323B (en) * 1998-03-14 2002-11-27 Motorola Ltd Distance measuring apparatus
US6269257B1 (en) * 1999-01-21 2001-07-31 Agere Systems Guardian Corp. Adaptive paging signal in cordless telephone
US6396438B1 (en) * 1999-09-24 2002-05-28 Slc Technologies System and method for locating radio frequency identification tags using three-phase antenna
FR2812481B1 (fr) * 2000-07-31 2002-12-13 Commissariat Energie Atomique Systeme de localisation a courte distance

Also Published As

Publication number Publication date
EP1658681B1 (de) 2007-06-13
WO2005020449A2 (en) 2005-03-03
DE602004007013D1 (de) 2007-07-26
DE602004007013T2 (de) 2008-02-14
DK1658681T3 (da) 2007-10-08
WO2005020449A3 (en) 2005-04-21
GB0319518D0 (en) 2003-09-17
EP1658681A2 (de) 2006-05-24
US20070188375A1 (en) 2007-08-16

Similar Documents

Publication Publication Date Title
DE602004007013D1 (de) Näherungsdetektionsgerät
WO2009002598A3 (en) Methods and apparatus for self-jamming suppression in a radio frequency identification (rfid) reader
WO2007136419A3 (en) Methods and system for reduced attenuation in tracking objects using rf technology
CA2724266A1 (en) Fluid dispense and liquid surface verification system and method
SG130093A1 (en) Radar detection apparatus and method thereof
EP2133827A4 (de) Funk-ic-vorrichtung
US6960996B2 (en) Device for locating trapped victims and a method of operating such a device
US20160006415A1 (en) Radio-frequency module
KR20050006571A (ko) 휴대폰의 고주파 수신회로
WO2017130519A1 (ja) 高周波フロントエンド回路、通信装置
US9160387B2 (en) Method and apparatus for noise canceling
AU2003206873A1 (en) Interference detection in a wireless communication system
WO2010076651A3 (en) Radio receiver
US20130147676A1 (en) Antenna structure and electronic device using the same
WO2007070383A3 (en) Highly integrated radiometer sensor cell
CN104579375B (zh) 无线通信装置
KR20100008282A (ko) Ｒｆｉｄ 리더 시스템 및 ｒｆｉｄ 리더의 송신누설신호제거 방법
CN203260051U (zh) 一种无线声表面波测温系统读写器
KR100672430B1 (ko) 이동통신 단말기의 ｇｐｓ 신호 수신장치 및 수신방법
GB201209981D0 (en) Adaptive antenna impedance matching
JPWO2017056790A1 (ja) 高周波フロントエンド回路、インピーダンス整合方法
US20150280759A1 (en) Enhanced receive sensitivity for concurrent communications
RU2366083C1 (ru) Система двусторонней сверхвысокочастотной радиосвязи
CN203761383U (zh) 用于声表面波无线传感器的高灵敏度读取装置
WO2003007513A3 (en) Apparatus and methods for detecting the usage of a cellular phone by an operator of a vehicle

Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification

Ref document number: 1658681

Country of ref document: EP