NL7109881A - - Google Patents

Info

Publication number
NL7109881A
NL7109881A NL7109881A NL7109881A NL7109881A NL 7109881 A NL7109881 A NL 7109881A NL 7109881 A NL7109881 A NL 7109881A NL 7109881 A NL7109881 A NL 7109881A NL 7109881 A NL7109881 A NL 7109881A
Authority
NL
Netherlands
Application number
NL7109881A
Other versions
NL172187C (nl
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 claimed from FR7026433A external-priority patent/FR2108146B1/fr
Priority claimed from FR7026432A external-priority patent/FR2112029B1/fr
Priority claimed from FR7117979A external-priority patent/FR2137312B2/fr
Priority claimed from FR7117978A external-priority patent/FR2135115B2/fr
Application filed filed Critical
Publication of NL7109881A publication Critical patent/NL7109881A/xx
Application granted granted Critical
Publication of NL172187C publication Critical patent/NL172187C/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0802—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection
    • H04B7/0822—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection according to predefined selection scheme
    • 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
    • G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
    • G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
    • H01Q21/26—Turnstile or like antennas comprising arrangements of three or more elongated elements disposed radially and symmetrically in a horizontal plane about a common centre
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Radar Systems Or Details Thereof (AREA)
NLAANVRAGE7109881,A 1970-07-17 1971-07-16 Radio-navigatie-inrichting. NL172187C (nl)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR7026433A FR2108146B1 (th) 1970-07-17 1970-07-17
FR7026432A FR2112029B1 (th) 1970-07-17 1970-07-17
FR7117979A FR2137312B2 (th) 1970-07-17 1971-05-18
FR7117978A FR2135115B2 (th) 1970-07-17 1971-05-18

Publications (2)

Publication Number Publication Date
NL7109881A true NL7109881A (th) 1972-01-19
NL172187C NL172187C (nl) 1983-07-18

Family

ID=27446069

Family Applications (1)

Application Number Title Priority Date Filing Date
NLAANVRAGE7109881,A NL172187C (nl) 1970-07-17 1971-07-16 Radio-navigatie-inrichting.

Country Status (10)

Country Link
US (1) US3747101A (th)
JP (1) JPS5316677B1 (th)
AU (1) AU457255B2 (th)
BE (1) BE769039A (th)
CA (1) CA938354A (th)
DE (1) DE2135737C2 (th)
GB (1) GB1333804A (th)
LU (1) LU63543A1 (th)
NL (1) NL172187C (th)
NO (1) NO131692C (th)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5559756U (th) * 1978-10-20 1980-04-23
JPH01141846U (th) * 1988-03-25 1989-09-28

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2994081A (en) * 1953-03-06 1961-07-25 Edward C Jordan Radio direction finder
DE1123000B (de) * 1958-07-16 1962-02-01 Standard Elektrik Lorenz Ag Anordnung zur drahtlosen Richtungsbestimmung auf Grund des Dopplereffektes

Also Published As

Publication number Publication date
JPS5316677B1 (th) 1978-06-02
CA938354A (en) 1973-12-11
DE2135737C2 (de) 1982-09-09
AU3113571A (en) 1973-01-18
LU63543A1 (th) 1971-11-16
DE2135737A1 (de) 1972-01-20
BE769039A (fr) 1971-11-03
NO131692C (th) 1975-07-09
US3747101A (en) 1973-07-17
AU457255B2 (en) 1975-01-23
NL172187C (nl) 1983-07-18
GB1333804A (en) 1973-10-17
NO131692B (th) 1975-04-01

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Legal Events

Date Code Title Description
V1 Lapsed because of non-payment of the annual fee