Antenna device and vehicle communication equipment

Abstract

An antenna device is provided, including a first transparent substrate, a second transparent substrate, and a plurality of antenna elements. A gap exists between the first and second transparent substrates. Each antenna element includes a first antenna electrode, a second antenna electrode, a patterned conductor layer, and a wafer. The patterned conductors of the patterned conductor layer are coupled to the second antenna electrode. The second antenna electrode is coupled to the first antenna electrode. The wafer is bonded to the patterned conductors. The thickness of both the first and second transparent substrates is less than 0.7 mm. An automotive communication device is also proposed.

Claims

1. An antenna device, comprising: A first transparent substrate having a first surface and a second surface opposite to each other; A second transparent substrate has opposing third and fourth surfaces, wherein the second surface faces the third surface, and a gap exists between the first transparent substrate and the second transparent substrate; The system includes multiple antenna elements arranged in an array, each antenna element comprising: a first antenna electrode disposed on a first surface of the first transparent substrate; a second antenna electrode disposed on a third surface of the second transparent substrate; a patterned conductor layer disposed on a fourth surface of the second transparent substrate and including patterned conductors, the patterned conductors coupling the second antenna electrode, the second antenna electrode coupling the first antenna electrode; and a wafer bonded to the patterned conductors on the fourth surface, wherein the thickness of both the first transparent substrate and the second transparent substrate is less than 0.7 mm.

2. The antenna device as claimed in claim 1, wherein the ratio of the thickness difference between the first transparent substrate and the second transparent substrate to the thickness of the first transparent substrate is less than or equal to 0.

1.

3. The antenna device as claimed in claim 1, having a frequency range of 10.7 GHz to 14.5 GHz overlapping with the Ku band of radio waves, and the distance between the first surface and the third surface falling within the range of 1.4 mm to 1.8 mm.

4. The antenna device as claimed in claim 1, having a frequency range of 17.7 GHz to 20.2 GHz overlapping with the K-band of radio waves, and the distance between the first surface and the third surface falling within the range of 0.8 mm to 1.2 mm.

5. The antenna device according to any one of claims 3 and 4, further comprising a plurality of supports, a first adhesive layer and a second adhesive layer, wherein the antenna device forms the gap by means of the plurality of supports, the first adhesive layer is disposed between each of the supports and the first transparent substrate, the second adhesive layer is disposed between each of the supports and the second transparent substrate, and the first adhesive layer and the second adhesive layer are made of the same material.

6. The antenna device as claimed in claim 5, wherein the first adhesive layer and the second adhesive layer are further disposed between the first antenna electrode and the second antenna electrode.

7. The antenna device as claimed in claim 6, wherein the dielectric constant (Dk) of the first adhesive layer and the second adhesive layer is less than or equal to 4, and the dielectric loss (Df) is less than or equal to 0.

006.

8. The antenna device of claim 6, wherein a distance is provided between the first adhesive layer and the second adhesive layer, and the first adhesive layer and the second adhesive layer between the first antenna electrode and the second antenna electrode have a total thickness, wherein the ratio between the total thickness and the distance is less than or equal to 0.

18.

9. The antenna device as claimed in any one of claims 3 and 4, further comprising a plurality of supports, wherein the antenna device forms the gap by means of the plurality of supports, and the plurality of supports are integrally formed with at least one of the first transparent substrate and the second transparent substrate.

10. The antenna device of claim 9, wherein only one adhesive layer is disposed between the first transparent substrate and the second transparent substrate.

11. A vehicle communication device, comprising an antenna assembly disposed on a vehicle window or sunroof, wherein the antenna assembly comprises: A first transparent substrate having a first surface and a second surface opposite to each other; A second transparent substrate has opposing third and fourth surfaces, wherein the second surface faces the third surface, and a gap exists between the first transparent substrate and the second transparent substrate; The system includes multiple antenna elements arranged in an array, each antenna element comprising: a first antenna electrode disposed on a first surface of the first transparent substrate; a second antenna electrode disposed on a third surface of the second transparent substrate; a patterned conductor layer disposed on a fourth surface of the second transparent substrate and including patterned conductors, the patterned conductors coupling the second antenna electrode, the second antenna electrode coupling the first antenna electrode; and a wafer bonded to the patterned conductors on the fourth surface, wherein the thickness of both the first transparent substrate and the second transparent substrate is less than 0.7 mm.

Images