GB533782A - Improvements in or relating to directional radio receivers - Google Patents

Improvements in or relating to directional radio receivers

Info

Publication number
GB533782A
GB533782A GB23686/39A GB2368639A GB533782A GB 533782 A GB533782 A GB 533782A GB 23686/39 A GB23686/39 A GB 23686/39A GB 2368639 A GB2368639 A GB 2368639A GB 533782 A GB533782 A GB 533782A
Authority
GB
United Kingdom
Prior art keywords
coil
frequency
coupled
modulated
amplitude
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
GB23686/39A
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.)
Marconis Wireless Telegraph Co Ltd
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph Co Ltd
Marconi Co Ltd
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 Marconis Wireless Telegraph Co Ltd, Marconi Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Publication of GB533782A publication Critical patent/GB533782A/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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Near-Field Transmission Systems (AREA)
GB23686/39A 1938-09-23 1939-08-16 Improvements in or relating to directional radio receivers Expired GB533782A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US231300A US2272056A (en) 1938-09-23 1938-09-23 Radio course indicator

Publications (1)

Publication Number Publication Date
GB533782A true GB533782A (en) 1941-02-20

Family

ID=22868632

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23686/39A Expired GB533782A (en) 1938-09-23 1939-08-16 Improvements in or relating to directional radio receivers

Country Status (3)

Country Link
US (1) US2272056A (en:Method)
GB (1) GB533782A (en:Method)
NL (1) NL57482C (en:Method)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2689345A (en) * 1949-06-25 1954-09-14 Int Standard Electric Corp Automatic approach control

Also Published As

Publication number Publication date
NL57482C (en:Method)
US2272056A (en) 1942-02-03

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