GB1270518A - Omni-directional antenna - Google Patents
Omni-directional antennaInfo
- Publication number
- GB1270518A GB1270518A GB3959/70A GB395970A GB1270518A GB 1270518 A GB1270518 A GB 1270518A GB 3959/70 A GB3959/70 A GB 3959/70A GB 395970 A GB395970 A GB 395970A GB 1270518 A GB1270518 A GB 1270518A
- Authority
- GB
- United Kingdom
- Prior art keywords
- shell
- terminals
- reflector
- elements
- wall
- 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
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/30—Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/40—Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements
Abstract
1,270,518. Aerials. VORTA SYSTEMS Inc. 27 Jan., 1970 [28 Jan., 1969], No. 3959/70. Heading H4A. An omni-directional aerial 10, Fig. 4, comprises a hollow hemispherically shaped dielectric (e.g., plastics) material shell 11, three spirally wound ring shaped radiating elements 13, 14, 15 each placed around the inner wall of said shell, a cylindrical symmetrical star-shaped cross-section reflector 25 located within said shell, and a filter circuit, Fig. 7 and Fig. 8 (not shown), also located within said shell. The radiating elements are made from aluminium or other conductive wire, and are twisted into spirals along their lengths, as shown in Fig. 6. The elements 13, 15 are, respectively, larger and smaller in diameter than the element 14 and are fixed to the wall of the shell 11, respectively, nearer and further from the base thereof than the element 14. The reflector 25, Fig. 5, may be made from aluminium sheet and have four points. It is supported by cardboard bracing 26, which is shaped to fit closely against the inner wall of the shell 11 and to hold the reflector coaxially with the radiating elements. The filter circuit comprises a toroidal ferrite core 30, Fig. 7, having a double primary winding between terminals 71-74 and 71-75, respectively, and a secondary winding between terminals 71-73, and a capacitor 22 connected between terminals 72-73. A single tap on the element 15 is connected to the reflector 25 and to the terminal 71, and pairs of spaced apart taps on the elements 13, 14 are connected, respectively, to the terminals 71, 75 and 72, 74. A twin-wire feeder is also connected to the terminals 71, 73. After the components are positioned within the shell 11 it is filled with a polyurethane substance 31, and is closed with a plastics material base cover. In a typical aerial of this kind the element 13 is stated to be effective for the UHF and higher-frequency VHF television broadcast channels, whilst the elements 14, 15 act in combination to receive lower-frequency VHF channels, as well as FM broadcasts.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US79460069A | 1969-01-28 | 1969-01-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1270518A true GB1270518A (en) | 1972-04-12 |
Family
ID=25163108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3959/70A Expired GB1270518A (en) | 1969-01-28 | 1970-01-27 | Omni-directional antenna |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE2003831A1 (en) |
| GB (1) | GB1270518A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2271670A (en) * | 1992-10-14 | 1994-04-20 | Nokia Mobile Phones Uk | Antenna. |
| CN103861737A (en) * | 2014-03-26 | 2014-06-18 | 长沙矿冶研究院有限责任公司 | Feeding device for pulverized coal ash electric separator |
-
1970
- 1970-01-27 GB GB3959/70A patent/GB1270518A/en not_active Expired
- 1970-01-28 DE DE19702003831 patent/DE2003831A1/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2271670A (en) * | 1992-10-14 | 1994-04-20 | Nokia Mobile Phones Uk | Antenna. |
| GB2271670B (en) * | 1992-10-14 | 1996-10-16 | Nokia Mobile Phones Uk | Wideband antenna arrangement |
| CN103861737A (en) * | 2014-03-26 | 2014-06-18 | 长沙矿冶研究院有限责任公司 | Feeding device for pulverized coal ash electric separator |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2003831A1 (en) | 1970-07-30 |
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