NL149047B - Transmissiemedium voor radio-frequente signalen in tunnels en dergelijke. - Google Patents

Transmissiemedium voor radio-frequente signalen in tunnels en dergelijke.

Info

Publication number
NL149047B
NL149047B NL717101966A NL7101966A NL149047B NL 149047 B NL149047 B NL 149047B NL 717101966 A NL717101966 A NL 717101966A NL 7101966 A NL7101966 A NL 7101966A NL 149047 B NL149047 B NL 149047B
Authority
NL
Netherlands
Prior art keywords
tunnels
transmission media
radio frequent
frequent signals
signals
Prior art date
Application number
NL717101966A
Other languages
English (en)
Other versions
NL7101966A (nl
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 NL7101966A publication Critical patent/NL7101966A/xx
Publication of NL149047B publication Critical patent/NL149047B/nl

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/04Adaptation for subterranean or subaqueous use
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06GANALOGUE COMPUTERS
    • G06G7/00Devices in which the computing operation is performed by varying electric or magnetic quantities
    • G06G7/12Arrangements for performing computing operations, e.g. operational amplifiers
    • G06G7/19Arrangements for performing computing operations, e.g. operational amplifiers for forming integrals of products, e.g. Fourier integrals, Laplace integrals, correlation integrals; for analysis or synthesis of functions using orthogonal functions
    • G06G7/1928Arrangements for performing computing operations, e.g. operational amplifiers for forming integrals of products, e.g. Fourier integrals, Laplace integrals, correlation integrals; for analysis or synthesis of functions using orthogonal functions for forming correlation integrals; for forming convolution integrals
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/20Non-resonant leaky-waveguide or transmission-line antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/203Leaky coaxial lines
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/20Non-resonant leaky-waveguide or transmission-line antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/28Non-resonant leaky-waveguide or transmission-line antennas; Equivalent structures causing radiation along the transmission path of a guided wave comprising elements constituting electric discontinuities and spaced in direction of wave propagation, e.g. dielectric elements or conductive elements forming artificial dielectric
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/38Impedance-matching networks
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B5/00Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/20Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium
    • H04B5/28Near-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

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Software Systems (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Near-Field Transmission Systems (AREA)
  • Communication Cables (AREA)
  • Waveguide Aerials (AREA)
NL717101966A 1970-02-18 1971-02-15 Transmissiemedium voor radio-frequente signalen in tunnels en dergelijke. NL149047B (nl)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE85381 1970-02-18

Publications (2)

Publication Number Publication Date
NL7101966A NL7101966A (nl) 1971-08-20
NL149047B true NL149047B (nl) 1976-03-15

Family

ID=3841321

Family Applications (1)

Application Number Title Priority Date Filing Date
NL717101966A NL149047B (nl) 1970-02-18 1971-02-15 Transmissiemedium voor radio-frequente signalen in tunnels en dergelijke.

Country Status (9)

Country Link
JP (1) JPS553855B1 (nl)
BE (1) BE746177A (nl)
CA (1) CA931238A (nl)
DE (1) DE2104467C3 (nl)
FR (1) FR2080581B1 (nl)
GB (1) GB1327864A (nl)
LU (1) LU62476A1 (nl)
NL (1) NL149047B (nl)
ZA (1) ZA71950B (nl)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE834291A (fr) * 1975-10-07 1976-02-02 Systeme de radiocommunications pour milieux confines
DE3004882A1 (de) * 1980-02-09 1981-08-20 Kabel- und Metallwerke Gutehoffnungshütte AG, 3000 Hannover Abstrahlendes koaxiales hochfrequenz-kabel
GB2212985A (en) * 1987-12-01 1989-08-02 Alison Microsystems Limited Slotted antenna
GB2235336B (en) * 1989-06-23 1994-05-11 Hunting Eng Ltd Communication via leaky cables
FR2659512B1 (fr) * 1990-03-09 1994-04-29 Cogema Installation de communication en hyperfrequences.
GB2415544B (en) * 2004-06-25 2006-11-29 Motorola Inc RF communication device and method of using it and antenna and antenna construction for use in the device and method

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2455224A (en) * 1944-06-16 1948-11-30 Buchwalter Louise Antenna
US3364489A (en) * 1964-09-17 1968-01-16 Melpar Inc Traveling wave antenna having radiator elements with doubly periodic spacing

Also Published As

Publication number Publication date
DE2104467A1 (de) 1971-08-26
JPS553855B1 (nl) 1980-01-28
DE2104467C3 (de) 1978-09-07
GB1327864A (en) 1973-08-22
LU62476A1 (nl) 1971-08-11
ZA71950B (en) 1971-12-29
FR2080581B1 (nl) 1974-10-11
NL7101966A (nl) 1971-08-20
FR2080581A1 (nl) 1971-11-19
DE2104467B2 (de) 1973-04-05
BE746177A (fr) 1970-08-18
CA931238A (en) 1973-07-31

Similar Documents

Publication Publication Date Title
NL178095C (nl) Verdraaibare koppeling voor leidingen en dergelijke.
CA961933A (en) Bi-directional amplifying bus-switch
CA929540A (en) Tunneling machines and the like
BE750545A (nl) Platform voor hangstellingen en dergelijke,
CA953898A (en) Dryshaver construction and operation
CA968921A (en) Joint construction for logs and the like
NL149047B (nl) Transmissiemedium voor radio-frequente signalen in tunnels en dergelijke.
CA1005290A (en) Hydrophobizing and swelling-preventive agent
AU3093571A (en) Foams
GB1445371A (en) Bunkers and the like
CA925092A (en) .alpha.-PYRONES AND METHODS FOR MAKING THE SAME
BE805422A (nl) Transportsysteem voor brieven en dergelijke
ES158439Y (es) Cierre-precinto para estuches y similares.
CA841087A (en) Particulate polymer foams
CA832009A (en) .alpha.-GLYCOLIDE AND METHODS FOR THE ISOLATION THEREOF
ES177131Y (es) Dispositivo antipercutor para puertas y similares.
BE784386A (nl) Verluchtingselement voor kruipkelders en dergelijke.
AU454587B2 (en) Tunnelling machines and the like
NL161645B (nl) Inrichting voor het vormen van twee gecombineerde geluidssignalen en inrichting voor het weergeven van de gevormde gecombineerde signalen.
ES158390Y (es) Cinta semirrigida para cierre de bolsas y similares.
CA843459A (en) D and 1-1, 1-diphenyl-2-methyl-3-aminopropanols
AU435490B2 (en) Foamed polymeric materials
CA839792A (en) Foamed polymeric materials
CA847409A (en) Foamed polymeric materials
CA845880A (en) V.h.f. signals generation and amplification

Legal Events

Date Code Title Description
V1 Lapsed because of non-payment of the annual fee
NL80 Information provided on patent owner name for an already discontinued patent

Owner name: INDUSTRIES