GB586139A - Improvements in electric wave modulating devices and electronic switches - Google Patents

Improvements in electric wave modulating devices and electronic switches

Info

Publication number
GB586139A
GB586139A GB2028/44A GB202844A GB586139A GB 586139 A GB586139 A GB 586139A GB 2028/44 A GB2028/44 A GB 2028/44A GB 202844 A GB202844 A GB 202844A GB 586139 A GB586139 A GB 586139A
Authority
GB
United Kingdom
Prior art keywords
aerials
phase
receiver
output
transformer
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
GB2028/44A
Other languages
English (en)
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 BE478026D priority Critical patent/BE478026A/xx
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB2028/44A priority patent/GB586139A/en
Priority to US584150A priority patent/US2485578A/en
Priority to FR939342D priority patent/FR939342A/fr
Publication of GB586139A publication Critical patent/GB586139A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
    • G01S3/14—Systems for determining direction or deviation from predetermined direction
    • G01S3/46—Systems for determining direction or deviation from predetermined direction using antennas spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems
    • G01S3/48—Systems for determining direction or deviation from predetermined direction using antennas spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems the waves arriving at the antennas being continuous or intermittent and the phase difference of signals derived therefrom being measured
    • 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
    • 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
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
    • G01S3/14—Systems for determining direction or deviation from predetermined direction
    • G01S3/16—Systems for determining direction or deviation from predetermined direction using amplitude comparison of signals derived sequentially from receiving antennas or antenna systems having differently-oriented directivity characteristics or from an antenna system having periodically-varied orientation of directivity characteristic

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
GB2028/44A 1944-02-03 1944-02-03 Improvements in electric wave modulating devices and electronic switches Expired GB586139A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
BE478026D BE478026A (fr) 1944-02-03
GB2028/44A GB586139A (en) 1944-02-03 1944-02-03 Improvements in electric wave modulating devices and electronic switches
US584150A US2485578A (en) 1944-02-03 1945-03-22 Automatic radio direction finding system
FR939342D FR939342A (fr) 1944-02-03 1946-09-07 Perfectionnements aux systèmes radiogoniométriques automatiques

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2028/44A GB586139A (en) 1944-02-03 1944-02-03 Improvements in electric wave modulating devices and electronic switches

Publications (1)

Publication Number Publication Date
GB586139A true GB586139A (en) 1947-03-07

Family

ID=9732341

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2028/44A Expired GB586139A (en) 1944-02-03 1944-02-03 Improvements in electric wave modulating devices and electronic switches

Country Status (4)

Country Link
US (1) US2485578A (fr)
BE (1) BE478026A (fr)
FR (1) FR939342A (fr)
GB (1) GB586139A (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3020548A (en) * 1958-05-19 1962-02-06 Allen Bradford Inc Portable radio direction finder
US4152703A (en) * 1976-09-01 1979-05-01 Dan-Mar Co. Homing device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1868945A (en) * 1930-11-25 1932-07-26 Bendix Aviat Corp Radio direction finder
US2397128A (en) * 1944-09-13 1946-03-26 Us Government Radio adapter unit

Also Published As

Publication number Publication date
US2485578A (en) 1949-10-25
FR939342A (fr) 1948-11-10
BE478026A (fr)

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