GB814976A - Improvements in and relating to radio aerials - Google Patents
Improvements in and relating to radio aerialsInfo
- Publication number
- GB814976A GB814976A GB909156A GB909156A GB814976A GB 814976 A GB814976 A GB 814976A GB 909156 A GB909156 A GB 909156A GB 909156 A GB909156 A GB 909156A GB 814976 A GB814976 A GB 814976A
- Authority
- GB
- United Kingdom
- Prior art keywords
- layer
- lattice
- plastic
- march
- grid
- 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
- 239000004033 plastic Substances 0.000 abstract 5
- 239000000463 material Substances 0.000 abstract 3
- 229920001971 elastomer Polymers 0.000 abstract 2
- 239000002184 metal Substances 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 2
- 239000010425 asbestos Substances 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 239000003822 epoxy resin Substances 0.000 abstract 1
- 239000004744 fabric Substances 0.000 abstract 1
- 239000011521 glass Substances 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 abstract 1
- 229920001568 phenolic resin Polymers 0.000 abstract 1
- 239000005011 phenolic resin Substances 0.000 abstract 1
- 229920000647 polyepoxide Polymers 0.000 abstract 1
- 229920001225 polyester resin Polymers 0.000 abstract 1
- 239000004645 polyester resin Substances 0.000 abstract 1
- 229910052895 riebeckite Inorganic materials 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/14—Reflecting surfaces; Equivalent structures
- H01Q15/141—Apparatus or processes specially adapted for manufacturing reflecting surfaces
- H01Q15/142—Apparatus or processes specially adapted for manufacturing reflecting surfaces using insulating material for supporting the reflecting surface
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Aerials With Secondary Devices (AREA)
Abstract
814,976. Moulding radio reflectors. CLEMENTS, H. J. March 25, 1957 [March 23, 1956], No. 9091/56. Class 87(2). [Also in Group XL(c)] A radio reflector is formed by covering the face of a shaped lattice of metal or other material with a plastic layer and then coating the outer face of the layer with metal. In one method of applying the plastic layer to the lattice the latter 10, 11 is inverted and supported by a structure 20. A sheet 21 of flexible material such as rubber extends over the top of a box 22 beneath the lattice and on top of the rubber is laid the layer 13 of plastic in a mouldable condition. Pressure inside the box is raised to press the layer against the lattice and maintained until the plastic is curved and attached to the lattice. The layer may be of woven glass cloth impregnated with a polyester resin or asbestos felt and a phenolic or epoxy resin. In a modified constructional method a grid of close mesh wire is covered with a material to prevent adhesion and placed over the plastic layer before pressure is applied. After the layer has been formed to the required shape the grid is removed and the formed layer bonded to the lattice.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB814976A true GB814976A (en) | 1959-06-17 |
Family
ID=1629628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB909156A Expired GB814976A (en) | 1956-03-23 | Improvements in and relating to radio aerials |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB814976A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5258767A (en) * | 1989-03-14 | 1993-11-02 | Kokusai Denshin Denwa Co., Ltd. | Antenna system for shaped beam |
-
1956
- 1956-03-23 GB GB909156A patent/GB814976A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5258767A (en) * | 1989-03-14 | 1993-11-02 | Kokusai Denshin Denwa Co., Ltd. | Antenna system for shaped beam |
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