GB439714A - Improvements in and relating to direction finding apparatus for use in wireless telegraphy - Google Patents

Improvements in and relating to direction finding apparatus for use in wireless telegraphy

Info

Publication number
GB439714A
GB439714A GB2909834A GB2909834A GB439714A GB 439714 A GB439714 A GB 439714A GB 2909834 A GB2909834 A GB 2909834A GB 2909834 A GB2909834 A GB 2909834A GB 439714 A GB439714 A GB 439714A
Authority
GB
United Kingdom
Prior art keywords
directive
limbs
coil
phase
relating
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
GB2909834A
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.)
CECIL CRAMPTON
RICHARD HUGH LORAINE BEVAN
Original Assignee
CECIL CRAMPTON
RICHARD HUGH LORAINE BEVAN
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 CECIL CRAMPTON, RICHARD HUGH LORAINE BEVAN filed Critical CECIL CRAMPTON
Priority to GB2909834A priority Critical patent/GB439714A/en
Publication of GB439714A publication Critical patent/GB439714A/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
    • G01S3/04—Details
    • G01S3/12—Means for determining sense of direction, e.g. by combining signals from directional antenna or goniometer search coil with those from non-directional antenna

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)

Abstract

439,714. Directive wireless signalling. BEVAN, R. H. L., and CRAMPTON, C., H.M. Signal School, R.N. Barracks, Portsmouth. Oct. 11, 1934, No. 29098. [Class 40 (v)] In order to maintain a constant phaserelation between the directive limbs A1, A2 and B1, B2 of an Adcock aerial and the associated " open" or sense finding aerial C1, the latter is made of the same height as the directive limbs, is erected at the centre of them, and is terminated by a coiled and screened wire C2, having the same length and electrical constants as C1. There is no pick-up from C1, and the current flowing through the coil L1 is always 90‹ out of phase with that flowing through the field coils F1, F2 of the radiogoniometer for any signal frequency. A further 90‹ phase-shift, making 180‹ in all, is imparted by the tuned circuit L3, C3 interposed on the coupling between the coil L1 and the amplifier or receiver.
GB2909834A 1934-10-11 1934-10-11 Improvements in and relating to direction finding apparatus for use in wireless telegraphy Expired GB439714A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2909834A GB439714A (en) 1934-10-11 1934-10-11 Improvements in and relating to direction finding apparatus for use in wireless telegraphy

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2909834A GB439714A (en) 1934-10-11 1934-10-11 Improvements in and relating to direction finding apparatus for use in wireless telegraphy

Publications (1)

Publication Number Publication Date
GB439714A true GB439714A (en) 1935-12-12

Family

ID=10286099

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2909834A Expired GB439714A (en) 1934-10-11 1934-10-11 Improvements in and relating to direction finding apparatus for use in wireless telegraphy

Country Status (1)

Country Link
GB (1) GB439714A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2421009A (en) * 1942-04-23 1947-05-27 Standard Telephones Cables Ltd Direction finding system
US2422026A (en) * 1943-07-28 1947-06-10 Rca Corp Radio direction finding
DE885100C (en) * 1942-01-10 1953-08-03 Telefunken Gmbh Direction finder for very short electric waves
US2837739A (en) * 1954-07-12 1958-06-03 Stewart Warner Corp Sense antenna system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE885100C (en) * 1942-01-10 1953-08-03 Telefunken Gmbh Direction finder for very short electric waves
US2421009A (en) * 1942-04-23 1947-05-27 Standard Telephones Cables Ltd Direction finding system
US2422026A (en) * 1943-07-28 1947-06-10 Rca Corp Radio direction finding
US2837739A (en) * 1954-07-12 1958-06-03 Stewart Warner Corp Sense antenna system

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