GB344539A - Improvements in or relating to directional aerial systems - Google Patents
Improvements in or relating to directional aerial systemsInfo
- Publication number
- GB344539A GB344539A GB38160/29A GB3816029A GB344539A GB 344539 A GB344539 A GB 344539A GB 38160/29 A GB38160/29 A GB 38160/29A GB 3816029 A GB3816029 A GB 3816029A GB 344539 A GB344539 A GB 344539A
- Authority
- GB
- United Kingdom
- Prior art keywords
- metal
- tubes
- rod
- enclosed
- directive
- 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
- 239000002184 metal Substances 0.000 abstract 4
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 abstract 2
- 238000012216 screening Methods 0.000 abstract 2
- 238000004804 winding Methods 0.000 abstract 2
- 230000006698 induction Effects 0.000 abstract 1
- 238000009413 insulation Methods 0.000 abstract 1
- 230000011664 signaling Effects 0.000 abstract 1
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
- G01S3/06—Means for increasing effective directivity, e.g. by combining signals having differently oriented directivity characteristics or by sharpening the envelope waveform of the signal derived from a rotating or oscillating beam antenna
- G01S3/065—Means for increasing effective directivity, e.g. by combining signals having differently oriented directivity characteristics or by sharpening the envelope waveform of the signal derived from a rotating or oscillating beam antenna by using non-directional aerial
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)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
344,539. Directive wireless signalling. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. and WOODS, F., Marconi House, Strand, London. Dec. 12, 1929, No. 38160. [Class 40 (v).] The frame windings are enclosed in two metal weatherproof tubes, 5, 6, connected together at the top 7, but insulated from each other at the bottom 9. In order to determine the " sense " as well as the direction of the incoming signals, a metal rod 8, forming with the tubes 5, 6 an " open " aerial extends from the connections 7 through the insulation box 9, and down through the supporting pedestal 1 to a terminal plate 10, to which the frame windings 11 .. 14 are also led. To remove the 180‹ ambiguity the signal " pick-up " from the rod 8, and the screening tubes 5, 6 are fed to the receiver through a suitable switch. For purely directive readings the rod 8 and its associated parts are cut out from the receiver circuit. In a modified arrangement the leads are taken from the pedestal 1 through a metal tube to a screened amplifier, so that the whole equipment is enclosed by metal screening which serves to prevent interference from inductions and other electrical " noise."
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB38160/29A GB344539A (en) | 1929-12-12 | 1929-12-12 | Improvements in or relating to directional aerial systems |
| US499619A US1994237A (en) | 1929-12-12 | 1930-12-03 | Directional aerial |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB38160/29A GB344539A (en) | 1929-12-12 | 1929-12-12 | Improvements in or relating to directional aerial systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB344539A true GB344539A (en) | 1931-03-12 |
Family
ID=10401628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB38160/29A Expired GB344539A (en) | 1929-12-12 | 1929-12-12 | Improvements in or relating to directional aerial systems |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US1994237A (en) |
| GB (1) | GB344539A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2274953A (en) * | 1993-02-09 | 1994-08-10 | Derek John Phipps | Navigation system incorporating screened two-loop antenna |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8431457D0 (en) * | 1984-12-13 | 1985-01-23 | Maxview Aerials Ltd | Aerials |
-
1929
- 1929-12-12 GB GB38160/29A patent/GB344539A/en not_active Expired
-
1930
- 1930-12-03 US US499619A patent/US1994237A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2274953A (en) * | 1993-02-09 | 1994-08-10 | Derek John Phipps | Navigation system incorporating screened two-loop antenna |
Also Published As
| Publication number | Publication date |
|---|---|
| US1994237A (en) | 1935-03-12 |
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