BE836418A - Perfectionnement aux reseaux d'antennes - Google Patents

Perfectionnement aux reseaux d'antennes

Info

Publication number
BE836418A
BE836418A BE162558A BE162558A BE836418A BE 836418 A BE836418 A BE 836418A BE 162558 A BE162558 A BE 162558A BE 162558 A BE162558 A BE 162558A BE 836418 A BE836418 A BE 836418A
Authority
BE
Belgium
Prior art keywords
network development
antenna network
antenna
development
network
Prior art date
Application number
BE162558A
Other languages
English (en)
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
Priority to FR7536235A priority Critical patent/FR2333256A1/fr
Priority to NL7514048A priority patent/NL7514048A/xx
Priority to DE19752554039 priority patent/DE2554039A1/de
Application filed filed Critical
Priority to BE162558A priority patent/BE836418A/fr
Publication of BE836418A publication Critical patent/BE836418A/fr

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/08—Locating faults in cables, transmission lines, or networks
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S11/00—Systems for determining distance or velocity not using reflection or reradiation
    • G01S11/02—Systems for determining distance or velocity not using reflection or reradiation using radio waves
    • G01S11/06—Systems for determining distance or velocity not using reflection or reradiation using radio waves using intensity measurements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/12—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with electromagnetic waves
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/01—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the shape of the antenna or antenna system
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/24—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the orientation by switching energy from one active radiating element to another, e.g. for beam switching
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/885—Radar or analogous systems specially adapted for specific applications for ground probing

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Electromagnetism (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • Geophysics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
BE162558A 1975-11-26 1975-12-09 Perfectionnement aux reseaux d'antennes BE836418A (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR7536235A FR2333256A1 (fr) 1975-11-26 1975-11-26 Reseaux d'antennes, notamment destines a l'inspection electromagnetique pour la recherche de defauts ou de derangements souterrains a des conduites et des cables
NL7514048A NL7514048A (nl) 1975-11-26 1975-12-02 Antenne.
DE19752554039 DE2554039A1 (de) 1975-11-26 1975-12-02 Antennensystem
BE162558A BE836418A (fr) 1975-11-26 1975-12-09 Perfectionnement aux reseaux d'antennes

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR7536235A FR2333256A1 (fr) 1975-11-26 1975-11-26 Reseaux d'antennes, notamment destines a l'inspection electromagnetique pour la recherche de defauts ou de derangements souterrains a des conduites et des cables
NL7514048A NL7514048A (nl) 1975-11-26 1975-12-02 Antenne.
DE19752554039 DE2554039A1 (de) 1975-11-26 1975-12-02 Antennensystem
BE162558A BE836418A (fr) 1975-11-26 1975-12-09 Perfectionnement aux reseaux d'antennes

Publications (1)

Publication Number Publication Date
BE836418A true BE836418A (fr) 1976-04-01

Family

ID=27424647

Family Applications (1)

Application Number Title Priority Date Filing Date
BE162558A BE836418A (fr) 1975-11-26 1975-12-09 Perfectionnement aux reseaux d'antennes

Country Status (4)

Country Link
BE (1) BE836418A (fr)
DE (1) DE2554039A1 (fr)
FR (1) FR2333256A1 (fr)
NL (1) NL7514048A (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
HU185723B (en) * 1982-07-09 1985-03-28 Laszlo Szedlmajer Method and apparatus for determining the track and depth of under grund lines
GB8304330D0 (en) * 1983-02-16 1983-03-23 Howell M I Electromagnetic surveying of pipes and cables
DE3503990C2 (de) * 1985-02-06 1986-11-20 Eltro GmbH, Gesellschaft für Strahlungstechnik, 6900 Heidelberg Breitbandiges Richtantennensystem
DE19518420C2 (de) * 1995-05-19 1998-01-02 Diether Alfred Schroeder Schaltungsanordnung zur Verwendung in einem geophysikalischen Prospektionsverfahren

Also Published As

Publication number Publication date
FR2333256A1 (fr) 1977-06-24
DE2554039A1 (de) 1977-06-08
FR2333256B3 (fr) 1978-09-01
NL7514048A (nl) 1977-06-06

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