Transparent antenna
Antennas capable of supporting high frequencies are disclosed, for example, a transparent antenna applicable to glass for vehicles is disclosed. A transparent antenna installed on a glass includes an adhesive layer attached to the glass, a transparent substrate disposed on the adhesive layer, an antenna structure layer disposed on the transparent substrate, a protective layer disposed on the antenna structure layer, and a power feeding portion connected to the antenna structure layer.
1. A transparent antenna comprising:
an adhesive layer configured to be attached to glass of a vehicle;
a transparent substrate disposed on the adhesive layer;
an antenna structure layer disposed on the transparent substrate and having a metal mesh structure;
a protective layer disposed on the antenna structure layer; and
a power feeding portion connected to the antenna structure layer,
wherein the power feeding portion comprises:
a substrate;
a first metal layer disposed on a first surface of the substrate;
a first bonding portion disposed on the first metal layer, and electrically connected to a cable;
a second metal layer disposed on a second surface of the substrate;
a second bonding portion disposed on the second metal layer, and electrically connected to a connection portion disposed on the antenna structure layer; and
a first cover layer disposed on an area of the first metal layer in which the first bonding part is not disposed and a second cover layer disposed on an area of the second metal layer in which the second bonding part is not disposed,
wherein at least one of the cover layer or the transparent substrate includes cyclo olefin imide polymer (COP).
2. The transparent antenna according to claim 1 , wherein the antenna structure layer further includes:
a resin formed to fill the metal mesh structure.
3. The transparent antenna according to claim 1 , wherein,
the power feeding portion is configured to be disposed on a black mask layer of the glass.
4. The transparent antenna according to claim 1 , further comprising:
an ultraviolet (UV) blocking film disposed between the adhesive layer and the transparent substrate.