Ultrawideband hyperflat and mesh grid SISO/MIMO antenna
An ultrawideband ultra-flat antenna and an ultrawideband ultra-flat transparent antenna which maintains visibility while functioning in surfaces without sacrificing antenna performance. The antenna, when mounted, appears substantially invisible and includes a mesh grid antenna that does not use a radome. The mesh grid antenna is optically transparent and may be easily mounted on windows and ceiling of buildings.
1 . An antenna structure comprising:
a wire mesh provided on a patch and a ground plane;
an adhesive layer for attaching said wire mesh to a first substrate; and
a polyester film provided between said adhesive layer and said first substrate,
wherein said antenna structure is configured for coupling to a signal source using a coupling structure comprising:
a first coplanar wave guide on an underside of a second substrate, said first coplanar wave guide coupled, by way of a via, to a microstrip line that is on a top side of said second substrate, said microstrip line feeding said antenna structure, wherein said first coplanar wave guide widens distally from said via;
a second coplanar wave guide mounted upon a top side of a third substrate, said second coplanar wave guide comprising a wide portion that narrows to a narrow portion; and
a solder mask layered between a wide end of said first coplanar wave guide and said wide portion of said second coplanar waveguide,
wherein, when a signal is present on said microstrip line, said signal capacitively couples from said wide end of said first coplanar waveguide to said wide portion of said second coplanar waveguide.
2 . The antenna structure as claimed in claim 1 , wherein said substrate is polycarbonate.
3 . The antenna structure as claimed in claim 2 , wherein said wire mesh is located on a top side of said substrate.
4 . The antenna structure as claimed in claim 1 , wherein said adhesive layer is transparent to light.
5 . The antenna structure as claimed in claim 1 , wherein said polyester layer is transparent to light.
6 . The antenna structure as claimed in claim 1 , wherein said substrate is transparent to light.
7 . The antenna structure as claimed in claim 1 , further comprising—at least one layer of solder mask applied atop said wire mesh.
8 . The antenna structure as claimed in claim 1 , wherein an antenna having said structure is deployed on a transparent surface.
9 . An antenna structure comprising:
a wire mesh provided on a patch and ground plane;
an adhesive layer for attaching said wire mesh to a first substrate;
a polyester film provided between said adhesive layer and said first substrate; and
a reflector adjacent to and spaced apart from said first substrate,
wherein, when said wire mesh is attached to said first substrate, a surface of said substrate is substantially planar and flat,
wherein said antenna structure is configured for coupling to a signal source using a coupling structure comprising:
a first coplanar wave guide on an underside of a second substrate, said first coplanar wave guide coupled, by way of a via, to a microstrip line that is on a top side of said second substrate, said microstrip line feeding said antenna structure, wherein said first coplanar wave guide widens distally from said via;
a second coplanar wave guide mounted upon a top side of a third substrate, said second coplanar wave guide comprising a wide portion that narrows to a narrow portion; and
a solder mask layered between a wide end of said first coplanar wave guide and said wide portion of said second coplanar waveguide,
wherein, when a signal is present on said microstrip line, said signal capacitively couples from said wide end of said first coplanar waveguide to said wide portion of said second coplanar waveguide.
10 . The antenna structure as claimed in claim 9 , wherein said substrate is color pigmented.
11 . The antenna structure as claimed in claim 9 , wherein said wire mesh is located on a top side of said first substrate.
12 . The antenna structure as claimed in claim 9 , further including an L-shaped element located adjacent a transmission cable of said antenna structure, said L-shaped element being for suppressing unwanted current distribution coupled from cable, wherein one face of said L-shaped metal plate is attached to said reflector and another face of said L-shaped metal plate extends into space.
13 . The antenna structure as claimed in claim 9 , wherein said antenna structure is for deployment within a cavity such that said reflector is inside said cavity.
14 . The antenna structure as claimed in claim 13 , wherein the cavity forms part of either a wall or a ceiling.
15 . A coupling structure for use with an antenna structure, the coupling structure comprising:
a first coplanar wave guide mounted on a first substrate, said first coplanar wave guide being coupled to a microstrip line by way of a via, said microstrip line feeding said antenna structure, wherein said first coplanar wave guide widens distally from said via;
a second coplanar wave guide mounted upon a second substrate, said second coplanar wave guide comprising a wide portion that narrows to a narrow portion; and
a solder mask layered between a wide end of said first coplanar wave guide and said wide portion of said second coplanar waveguide,
wherein, when a signal is present on said microstrip line, said signal capacitively couples from said wide end of said first coplanar waveguide to said wide portion of said second coplanar waveguide.
16 . The coupling structure as claimed in claim 15 , wherein said coupling structure couples a flat antenna structure to a signal source.