GB408837A - Improvements in and relating to the transmission of signals by short wave electromagnetic radiation - Google Patents
Improvements in and relating to the transmission of signals by short wave electromagnetic radiationInfo
- Publication number
- GB408837A GB408837A GB18295/33A GB1829533A GB408837A GB 408837 A GB408837 A GB 408837A GB 18295/33 A GB18295/33 A GB 18295/33A GB 1829533 A GB1829533 A GB 1829533A GB 408837 A GB408837 A GB 408837A
- Authority
- GB
- United Kingdom
- Prior art keywords
- radiation
- mirror
- class
- axis
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
- H01Q19/12—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave
Landscapes
- Aerials With Secondary Devices (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
408,837. Directive wireless signalling. NAAMLOOZE VENNOOTSCHAP MACHINERIEEN-EN APPARATEN FABRIEKEN, 30, Croeselaan, Utrecht, Holland. June27,1933, No. 18295. Convention date, July 6, 1932. Drawings to Specification. [Class 40 (v).] A radio transmitter produces a spacially inhomogeneous bundle of radiation, for example, in the form of a cylinder and the inhomogeneity at the receiving station is used for increasing the selectivity. In one embodiment an electric or magnetic dipole, i.e. a rod or coil aerial is arranged at the focus of a paraboloidal reflector so that its axis of maximum radiation is perpendicular to the axis of the reflector. It is shown that this disposition produces a tubular radiation diagram, and substantially all of the radiation produced is reflected from the mirror. The receiver is arranged similarly to the transmitter. The production of beams of elliptical and other cross sections is discussed, also the replacement of the mirror by energized or unenergized conductors in known manner. Specifications 314,310 and 323,331, [both in Class 40 (v)], are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE408837X | 1932-07-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB408837A true GB408837A (en) | 1934-04-19 |
Family
ID=6422339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB18295/33A Expired GB408837A (en) | 1932-07-06 | 1933-06-27 | Improvements in and relating to the transmission of signals by short wave electromagnetic radiation |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2054895A (en) |
| FR (1) | FR757299A (en) |
| GB (1) | GB408837A (en) |
| NL (1) | NL38496C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL72107C (en) * | 1940-02-29 | |||
| US2438343A (en) * | 1942-07-09 | 1948-03-23 | Westinghouse Electric Corp | High-frequency radiation system |
| US2702858A (en) * | 1945-09-19 | 1955-02-22 | Foster John Stuart | Rear paraboloid feed for round guide |
| US3009154A (en) * | 1957-09-05 | 1961-11-14 | Philco Corp | Directive antenna system |
-
0
- NL NL38496D patent/NL38496C/xx active
-
1933
- 1933-06-21 FR FR757299D patent/FR757299A/en not_active Expired
- 1933-06-26 US US677733A patent/US2054895A/en not_active Expired - Lifetime
- 1933-06-27 GB GB18295/33A patent/GB408837A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL38496C (en) | |
| FR757299A (en) | 1933-12-22 |
| US2054895A (en) | 1936-09-22 |
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