GB1434975A - Wireless telecommunication system for use in confined spaces - Google Patents

Wireless telecommunication system for use in confined spaces

Info

Publication number
GB1434975A
GB1434975A GB3565073A GB3565073A GB1434975A GB 1434975 A GB1434975 A GB 1434975A GB 3565073 A GB3565073 A GB 3565073A GB 3565073 A GB3565073 A GB 3565073A GB 1434975 A GB1434975 A GB 1434975A
Authority
GB
United Kingdom
Prior art keywords
cavity
cable
conductors
plates
bottom part
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.)
Expired
Application number
GB3565073A
Other languages
English (en)
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.)
INIEX
Original Assignee
INIEX
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 INIEX filed Critical INIEX
Publication of GB1434975A publication Critical patent/GB1434975A/en
Expired legal-status Critical Current

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
    • 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
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/20—Non-resonant leaky-waveguide or transmission-line antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/203—Leaky coaxial lines
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/38—Impedance-matching networks
    • 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
    • H04B5/28—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium using the near field of leaky cables, e.g. of leaky coaxial cables

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Waveguide Aerials (AREA)
  • Communication Cables (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Details Of Aerials (AREA)
  • Near-Field Transmission Systems (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
GB3565073A 1970-02-18 1973-07-26 Wireless telecommunication system for use in confined spaces Expired GB1434975A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE85381 1970-02-18
BE120619 1972-08-03

Publications (1)

Publication Number Publication Date
GB1434975A true GB1434975A (en) 1976-05-12

Family

ID=25647495

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3565073A Expired GB1434975A (en) 1970-02-18 1973-07-26 Wireless telecommunication system for use in confined spaces

Country Status (8)

Country Link
US (1) US3829767A (enExample)
JP (1) JPS49132911A (enExample)
BE (1) BE787158R (enExample)
DE (1) DE2337949C3 (enExample)
FR (1) FR2195126B2 (enExample)
GB (1) GB1434975A (enExample)
LU (1) LU68137A1 (enExample)
NL (1) NL173337C (enExample)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4001774A (en) * 1975-01-08 1977-01-04 Exxon Production Research Company Method of transmitting signals from a drill bit to the surface
US4023136A (en) * 1975-06-09 1977-05-10 Sperry Rand Corporation Borehole telemetry system
US4476574A (en) * 1980-09-17 1984-10-09 The United States Of America As Represented By The United States Department Of Energy Radio frequency communication system utilizing radiating transmission lines
CA1280487C (en) * 1986-11-06 1991-02-19 Senstar-Stellar Corporation Intrusion detection system
CA1280488C (en) * 1986-11-06 1991-02-19 Control Data Canada Limited Perimeter intrusion detection system with block ranging capability
DE102008063458B4 (de) * 2008-12-17 2012-03-15 Siemens Aktiengesellschaft Mantelwellensperre, Magnetresonanztomographie-Einrichtung mit Mantelwellensperre und Verwendung der Mantelwellensperre in einer solchen Einrichtung

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2082842A5 (enExample) * 1970-03-27 1971-12-10 Boulore Christian

Also Published As

Publication number Publication date
JPS49132911A (enExample) 1974-12-20
FR2195126B2 (enExample) 1977-05-13
DE2337949C3 (de) 1978-11-30
US3829767A (en) 1974-08-13
FR2195126A2 (enExample) 1974-03-01
NL173337B (nl) 1983-08-01
DE2337949B2 (de) 1974-08-08
DE2337949A1 (de) 1974-02-21
NL7310334A (enExample) 1974-02-05
BE787158R (fr) 1972-12-01
NL173337C (nl) 1984-01-02
LU68137A1 (enExample) 1973-10-16

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee