NL173337C - IMPROVEMENT OF A TRANSMISSION MEDIUM FOR RADIO-FREQUENT SIGNALS IN TUNNELS AND THE LIKE, INCLUDING A COAXIAL CABLE PROVIDING OPENINGS FOR THE RADIO-FREQUENT ENERGY RADIATION. - Google Patents

IMPROVEMENT OF A TRANSMISSION MEDIUM FOR RADIO-FREQUENT SIGNALS IN TUNNELS AND THE LIKE, INCLUDING A COAXIAL CABLE PROVIDING OPENINGS FOR THE RADIO-FREQUENT ENERGY RADIATION.

Info

Publication number
NL173337C
NL173337C NLAANVRAGE7310334,A NL7310334A NL173337C NL 173337 C NL173337 C NL 173337C NL 7310334 A NL7310334 A NL 7310334A NL 173337 C NL173337 C NL 173337C
Authority
NL
Netherlands
Prior art keywords
radio
frequent
tunnels
improvement
coaxial cable
Prior art date
Application number
NLAANVRAGE7310334,A
Other languages
Dutch (nl)
Other versions
NL7310334A (en
NL173337B (en
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 NL7310334A publication Critical patent/NL7310334A/xx
Publication of NL173337B publication Critical patent/NL173337B/en
Application granted granted Critical
Publication of NL173337C publication Critical patent/NL173337C/en

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)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Details Of Aerials (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Communication Cables (AREA)
  • Near-Field Transmission Systems (AREA)
NLAANVRAGE7310334,A 1970-02-18 1973-07-25 IMPROVEMENT OF A TRANSMISSION MEDIUM FOR RADIO-FREQUENT SIGNALS IN TUNNELS AND THE LIKE, INCLUDING A COAXIAL CABLE PROVIDING OPENINGS FOR THE RADIO-FREQUENT ENERGY RADIATION. NL173337C (en)

Applications Claiming Priority (2)

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

Publications (3)

Publication Number Publication Date
NL7310334A NL7310334A (en) 1974-02-05
NL173337B NL173337B (en) 1983-08-01
NL173337C true NL173337C (en) 1984-01-02

Family

ID=25647495

Family Applications (1)

Application Number Title Priority Date Filing Date
NLAANVRAGE7310334,A NL173337C (en) 1970-02-18 1973-07-25 IMPROVEMENT OF A TRANSMISSION MEDIUM FOR RADIO-FREQUENT SIGNALS IN TUNNELS AND THE LIKE, INCLUDING A COAXIAL CABLE PROVIDING OPENINGS FOR THE RADIO-FREQUENT ENERGY RADIATION.

Country Status (8)

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

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 (en) * 2008-12-17 2012-03-15 Siemens Aktiengesellschaft Sheath wave barrier, magnetic resonance imaging device with standing wave barrier and use of the standing wave barrier in such a device

Family Cites Families (1)

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

Also Published As

Publication number Publication date
BE787158R (en) 1972-12-01
NL7310334A (en) 1974-02-05
JPS49132911A (en) 1974-12-20
NL173337B (en) 1983-08-01
FR2195126B2 (en) 1977-05-13
GB1434975A (en) 1976-05-12
DE2337949C3 (en) 1978-11-30
LU68137A1 (en) 1973-10-16
DE2337949B2 (en) 1974-08-08
US3829767A (en) 1974-08-13
DE2337949A1 (en) 1974-02-21
FR2195126A2 (en) 1974-03-01

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Legal Events

Date Code Title Description
BC A request for examination has been filed
V3 Additional patents lapsed at the same time as the main patent