GB441964A - Improvements in or relating to radio direction finding systems - Google Patents
Improvements in or relating to radio direction finding systemsInfo
- Publication number
- GB441964A GB441964A GB2832/35A GB283235A GB441964A GB 441964 A GB441964 A GB 441964A GB 2832/35 A GB2832/35 A GB 2832/35A GB 283235 A GB283235 A GB 283235A GB 441964 A GB441964 A GB 441964A
- Authority
- GB
- United Kingdom
- Prior art keywords
- receiver
- fed
- jan
- aerials
- characteristic
- 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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
441,964. Directive wireless signalling. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin. Jan. 28, 1935, No. 2832. Convention date, Jan. 27, 1934. [Class 40 (v)] To ensure a clear-cut directional indication, free from ambiguity due to waves reflected from a nearby conductor, the receiving aerial system is given a pick-up characteristic which, as shown in Fig. 4, has a zero direction lying inside a small solid angle of full-strength reception, outside which it again receives no signals. Each of the receiving aerials 1 ... 4, Fig. 1 has a sharply-directional characteristic as shown in Fig. 3. They may consist of dipoles mounted inside a reflector, or of separate " beam " arrays, and are arranged in two pairs 1, 2 and 3, 4 set mutually at right angles. The incoming signals from 1, 2 are fed in opposition to a receiver 5, whilst those from 3, 4 are similarly fed to a receiver 5<1>, the rectified output being added in an indicator 6 to give the effect shown in Fig. 4. Alternatively the two opposed voltages from each pair of aerials may be fed direct to a common receiver through networks which. impose a phase-shift of 90‹.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE441964X | 1934-01-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB441964A true GB441964A (en) | 1936-01-30 |
Family
ID=6519845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2832/35A Expired GB441964A (en) | 1934-01-27 | 1935-01-28 | Improvements in or relating to radio direction finding systems |
Country Status (2)
| Country | Link |
|---|---|
| GB (1) | GB441964A (en) |
| NL (1) | NL40912C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2523398A (en) * | 1940-06-29 | 1950-09-26 | Bell Telephone Labor Inc | Radio wave transmission |
| US2620471A (en) * | 1945-03-28 | 1952-12-02 | Rca Corp | Radio direction finder |
| US2830288A (en) * | 1945-10-05 | 1958-04-08 | Robert H Dicke | Lobing system |
-
0
- NL NL40912D patent/NL40912C/xx active
-
1935
- 1935-01-28 GB GB2832/35A patent/GB441964A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2523398A (en) * | 1940-06-29 | 1950-09-26 | Bell Telephone Labor Inc | Radio wave transmission |
| US2620471A (en) * | 1945-03-28 | 1952-12-02 | Rca Corp | Radio direction finder |
| US2830288A (en) * | 1945-10-05 | 1958-04-08 | Robert H Dicke | Lobing system |
Also Published As
| Publication number | Publication date |
|---|---|
| NL40912C (en) |
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