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 telegraphyInfo
- 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
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.
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)
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 |
-
1934
- 1934-10-11 GB GB2909834A patent/GB439714A/en not_active Expired
Cited By (4)
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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