Antenna and method of making such antenna and component parts thereof
First Claim
1. An antenna which comprisesa ground plane;
- a conductive foil element spaced from the ground plane; and
a dielectric substrate separating the conductive foil element from the ground plane, the dielectric substrate including a unitary sheet of integrally extruded plastics material having a pair of spaced parallel skins and webs extending between and separating the skins, and the webs having a cellular configuration in cross-section.
2 Assignments
0 Petitions
Accused Products
Abstract
An antenna comprises a conductive foil layer (16) which forms a ground plane, a conductive foil element (20) spaced from the ground plane, and a dielectric substrate (14) separating the foil element from the ground plane, the dielectric substrate being of an extruded plastics material having a cellular configuration in cross-section. More particularly, the dielectric substrate comprises one or more superimposed substrate sheets of extruded plastics material, with the or each substrate sheet comprising a pair of spaced, parallel skins (38) and webs (40) extending between and separating the skins. A method of applying the foil element to the dielectric substrate and of making the antenna and various component parts thereof are also disclosed.
21 Citations
13 Claims
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1. An antenna which comprises
a ground plane; -
a conductive foil element spaced from the ground plane; and
a dielectric substrate separating the conductive foil element from the ground plane, the dielectric substrate including a unitary sheet of integrally extruded plastics material having a pair of spaced parallel skins and webs extending between and separating the skins, and the webs having a cellular configuration in cross-section. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of making an antenna having a dielectric substrate and a conductive foil element on the substrate, the foil element having a predetermined outline, which method comprises:
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providing the substrate as a sheet of extruded plastics material having a cellular configuration in cross-section;
providing a sheet of conductive foil and die-cutting the foil sheet along said outline, in such a manner that bridge portions of foil remain between that part of the foil sheet which is inside the outline and that part of the foil sheet which is outside the outline;
applying the foil sheet, after it has been die-cut, to the substrate sheet, there being an adhesive between that part of the foil sheet which is inside the outline and the substrate sheet, so that that part of the foil sheet which is inside the outline becomes attached to the substrate sheets by means of the adhesive; and
thereafter removing that part of the foil sheet which is outside the outline by severing the bridge portions. - View Dependent Claims (11, 12, 13)
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Specification