CA931238A - Wireless telecommunication system for use in confined spaces - Google Patents

Wireless telecommunication system for use in confined spaces

Info

Publication number
CA931238A
CA931238A CA104079A CA104079A CA931238A CA 931238 A CA931238 A CA 931238A CA 104079 A CA104079 A CA 104079A CA 104079 A CA104079 A CA 104079A CA 931238 A CA931238 A CA 931238A
Authority
CA
Canada
Prior art keywords
telecommunication system
wireless telecommunication
confined spaces
confined
spaces
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
CA104079A
Other languages
English (en)
Other versions
CA104079S (en
Inventor
Delogne Paul
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.)
INSTITUT NATIONAL DES INDUSTRIES EXTRACTIVES
Original Assignee
INSTITUT NATIONAL DES INDUSTRIES EXTRACTIVES
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 INSTITUT NATIONAL DES INDUSTRIES EXTRACTIVES filed Critical INSTITUT NATIONAL DES INDUSTRIES EXTRACTIVES
Application granted granted Critical
Publication of CA931238A publication Critical patent/CA931238A/en
Expired 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
    • H01Q1/04—Adaptation for subterranean or subaqueous use
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
    • G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
    • G06G7/19—Arrangements 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
    • G06G7/1928—Arrangements 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
    • 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
    • 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
    • H01Q13/28—Non-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
    • 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

  • 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)
  • Waveguide Aerials (AREA)
  • Communication Cables (AREA)
CA104079A 1970-02-18 1971-01-29 Wireless telecommunication system for use in confined spaces Expired CA931238A (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
CA931238A true CA931238A (en) 1973-07-31

Family

ID=3841321

Family Applications (1)

Application Number Title Priority Date Filing Date
CA104079A Expired CA931238A (en) 1970-02-18 1971-01-29 Wireless telecommunication system for use in confined spaces

Country Status (9)

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

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
FR2080581B1 (enExample) 1974-10-11
DE2104467C3 (de) 1978-09-07
GB1327864A (en) 1973-08-22
ZA71950B (en) 1971-12-29
LU62476A1 (enExample) 1971-08-11
NL7101966A (enExample) 1971-08-20
NL149047B (nl) 1976-03-15
DE2104467A1 (de) 1971-08-26
JPS553855B1 (enExample) 1980-01-28
FR2080581A1 (enExample) 1971-11-19
BE746177A (fr) 1970-08-18
DE2104467B2 (de) 1973-04-05

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