ZA71950B - Wireless telecommunication system for use in confined spaces - Google Patents

Wireless telecommunication system for use in confined spaces

Info

Publication number
ZA71950B
ZA71950B ZA710950A ZA71950A ZA71950B ZA 71950 B ZA71950 B ZA 71950B ZA 710950 A ZA710950 A ZA 710950A ZA 71950 A ZA71950 A ZA 71950A ZA 71950 B ZA71950 B ZA 71950B
Authority
ZA
South Africa
Prior art keywords
telecommunication system
wireless telecommunication
confined spaces
confined
spaces
Prior art date
Application number
ZA710950A
Inventor
P Delogne
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 ZA71950B publication Critical patent/ZA71950B/en

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; CALCULATING OR 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)
  • Communication Cables (AREA)
  • Waveguide Aerials (AREA)
ZA710950A 1970-02-18 1971-02-15 Wireless telecommunication system for use in confined spaces ZA71950B (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
ZA71950B true ZA71950B (en) 1971-12-29

Family

ID=3841321

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA710950A ZA71950B (en) 1970-02-18 1971-02-15 Wireless telecommunication system for use in confined spaces

Country Status (9)

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

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE834291A (en) * 1975-10-07 1976-02-02 RADIOCOMMUNICATIONS SYSTEM FOR CONFINED AREAS
DE3004882A1 (en) * 1980-02-09 1981-08-20 Kabel- und Metallwerke Gutehoffnungshütte AG, 3000 Hannover RADIANT COAXIAL HIGH FREQUENCY CABLE
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 (en) * 1990-03-09 1994-04-29 Cogema MICROWAVE COMMUNICATION FACILITY.
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
GB1327864A (en) 1973-08-22
DE2104467B2 (en) 1973-04-05
DE2104467A1 (en) 1971-08-26
CA931238A (en) 1973-07-31
BE746177A (en) 1970-08-18
DE2104467C3 (en) 1978-09-07
JPS553855B1 (en) 1980-01-28
FR2080581B1 (en) 1974-10-11
NL7101966A (en) 1971-08-20
LU62476A1 (en) 1971-08-11
NL149047B (en) 1976-03-15
FR2080581A1 (en) 1971-11-19

Similar Documents

Publication Publication Date Title
IL36840A0 (en) Improvements in respirators
AU5901173A (en) Mobile scaffolding
HK13477A (en) Arylalkylsulphoxides
ZA713427B (en) Soft-rinsing agent
ZA71950B (en) Wireless telecommunication system for use in confined spaces
JPS5192364A (en) Goseisenizairyo no kyujinsenshokuho
ZA716412B (en) Catalyst
HK86379A (en) 3-fluoroalanines
ZA717728B (en) Improvements in catalysts
GB1369868A (en) Lithoprinting plates
ZA735267B (en) Wireless telecommunication system for use in confined spaces
ZA717727B (en) Improvements in catalysts
GB1364569A (en) Cinecamera
ZA704235B (en) Improvements in communications
ZA708472B (en) Rollers
IL37915A0 (en) Telecommunication exchange systems
IL37771A (en) 2-alkylsulphonylaminomethyl-1,4-benzodioxanes
IL37724A0 (en) N-substituted-2,3-dihydro-2-oxo-5-phenyl-1h-1,4-benzodiazepine-1-carboxamides
IE34900B1 (en) Hexahydroazepines
IE34997B1 (en) 4-piperidylidene-benzocycloheptathiopenes
AU4883172A (en) Stick-classifying
IL36063A0 (en) Improvements in radio tranceivers
YU15570A (en) Kominirana grelna in ventilacijska priprava
YU31897B (en) Vecslojna atmosfersko in mehansko otporna plosca
AU440883B2 (en) Improvements in telephone exchange equipment