A compact arrangement of antennas in a glazing is disclosed, which allows a plurality of antenna wires to be connected to an external circuit by a single contact. Parallel conductors, in direct current isolation from each other so that alternating current coupling occurs between them, are embedded at different depths in the thickness of a ply of plastic material. In plan view, conductors at different depths may be positioned closer to each other than in the prior art, so antennas connected to them are less obtrusive and may even be hidden completely under an obscuration band. Different widths of parallel conductor may be used. A thin antenna, connected to a thin conductor, may be positioned in a vision area of a glazing without impeding the view.

An antenna device based on a transparent substrate and a method of configuring an antenna device are provided. The antenna device includes a transparent substrate, a first dielectric layer, and an antenna. The transparent substrate includes a first surface and a second surface opposite to the first surface. The first dielectric layer includes a third surface and a fourth surface opposite to the third surface, wherein the first dielectric layer is in contact with the first surface via the third surface to be disposed on the transparent substrate, wherein a permittivity of the first dielectric layer is less than a permittivity of the transparent substrate. The antenna includes a radiation part, wherein the radiation part is disposed on one of the second surface and the fourth surface.

An antenna apparatus includes a glass plate that is fixed to a flange of a vehicle body at a window opening portion of the vehicle body; a dielectric material; a conductive film provided between the glass plate and the dielectric material; and a monopolar feeding portion provided on the dielectric material at a surface opposite to a glass plate side and at a position capable of being capacitively coupled to the conductive film, the antenna apparatus being configured such that a clearance between an end portion of the flange of the vehicle body and an outer edge of the conductive film functions as a slot antenna, the conductive film being provided with a notch having one end as an open end at the outer edge of the conductive film in the vicinity of the feeding portion.

The invention is a new type of antenna connection which allows two or more antennas to be connected to an external circuit via a small surface contact. Surface contact size is reduced due to the use of coupling electrodes, at least portions of which are laid adjacent to and parallel with each other such that alternating current coupling occurs between them.

A laminated glazing assembly includes an outer glass substrate, an inner glass substrate, and a polymeric interlayer disposed therebetween. The laminated glazing assembly also includes an antenna assembly disposed between the polymeric interlayer and one of the outer glass substrate and the inner glass substrate. The antenna assembly includes a film layer that carries a radiating element. The film layer may be a transparent film layer having a refractive index of from 1.45 to 1.55. The radiating element includes conductive wires disposed on the film layer and configured to be energized to transmit and/or receive radio frequency signals. The laminated glazing assembly may also include an adhesive layer disposed between the film layer and one of the outer glass substrate and the inner glass substrate, and a feeding element coupled to the inner glass substrate and capacitively coupled to the antenna assembly to energize the antenna assembly to transmit and/or receive radio frequency signals.

Exemplary embodiments are disclosed of automotive broadband transparent antennas. The transparent antennas can be, for example, configured for placement or application directly on vehicle glass or in between layers of vehicle glass, such as glass roofs, windshields, sunroofs, or other vehicle glass structures. In an exemplary embodiment, an antenna system can include a substrate with conductive structure, which can be formed, for example, of metal or other conductive material(s). A radiating area is formed of a conductive mesh or other structure that is windshield transparent or other vehicle glass transparent. The radiating element is in electrical communication with a connector. The connector can be, for example, coaxial cable, coaxial connector, coplanar lines, coaxial, coplanar, waveguide or conductive pad connector, FAKRA connector, HFM connector, Mate-AX connector, other RF transfer means, or other appropriate connector for a given application. A ground area partially surrounds the radiating area. The ground area is formed of a conductive mesh or structure that is windshield transparent or other vehicle glass transparent.

A feeding structure comprises: a dielectric plate for vehicle window having a first surface and a second surface opposite to the first surface; a feeding unit positioned on the first surface side of the dielectric plate; and a receiving unit positioned on the second surface side of the dielectric plate, wherein the dielectric plate includes a first dielectric region between the feeding unit and the receiving unit, and a second dielectric region adjacent to the first dielectric region in a plan view, and the second dielectric region has a relative permittivity lower than that of the first dielectric region when the feeding unit and the receiving unit are electromagnetically coupled to each other.