Patch antenna with ground well

Patent metadata

Field	Value
Publication number	US-12374797-B2
Application number	US-202318210921-A
Country	US
Kind code	B2
Filing date	Jun 16, 2023
Priority date	Jun 16, 2023
Publication date	Jul 29, 2025
Grant date	Jul 29, 2025

Abstract

A Global Navigation Satellite System (GNSS) patch antenna can include a middle laminate, a top laminate, a bottom laminate, and a ground well. The middle laminate can include a first side and a second side. The top laminate can be coupled to the middle laminate and can be positioned on the first side of the middle laminate. The top laminate can include an electrically conductive antenna element configured to receive GNSS signals. The bottom laminate can be coupled to the middle laminate and can be positioned on the second side of the middle laminate. The ground well can cover exposed surfaces of the bottom laminate and exposed portions of the second side of the middle laminate and can comprise electrically conductive material. Some of the surface of the middle laminate that is covered by the bottom laminate can be free from the electrically conductive material.

First claim

What is claimed is:

1. A Global Navigation Satellite System (GNSS) patch antenna comprising:
a middle laminate comprising a first side and a second side opposite the first side;
a top laminate coupled to the middle laminate and positioned on the first side of the middle laminate, the top laminate including at least one electrically conductive antenna element configured to receive GNSS signals;
a bottom laminate coupled to the middle laminate and positioned on the second side of the middle laminate;
a ground well covering exposed surfaces of the bottom laminate and at least an exposed portion of a surface of the second side of the middle laminate, the ground well comprising an electrically conductive material, wherein at least a portion of the surface of the middle laminate that is covered by the bottom laminate is free from the electrically conductive material; and
a plurality of channels extending from an upper one of the at least one electrically conductive antenna element of the top laminate to a first side of the bottom laminate, wherein the first side of the bottom laminate is positioned opposite from a second side of the bottom laminate that is adjacent to the second side of the middle laminate.

2. The GNSS patch antenna of claim 1 , wherein the at least one electrically conductive antenna element has a geometrical shape similar to a geometrical shape of the top laminate, and wherein the at least one electrically conductive antenna element comprises copper.

3. The GNSS patch antenna of claim 1 , wherein the middle laminate defines a first three-dimensional shape, wherein the top laminate defines a second three-dimensional shape, wherein the bottom laminate defines a third three-dimensional shape, wherein at least two dimensions of each of the first three-dimensional shape, the second three-dimensional shape, and the third three-dimensional shape are geometrically similar.

4. The GNSS patch antenna of claim 3 , wherein the first three-dimensional shape, the second three-dimensional shape, and the third three-dimensional shape are each differently sized cylindrical shapes, and wherein the first three-dimensional shape has a first radius that is larger than a second radius of the second three-dimensional shape and a third radius of the third three-dimensional shape.

5. The GNSS patch antenna of claim 1 , further comprising a plurality of conduction pins corresponding to the plurality of channels, wherein each conduction pin of the plurality of conduction pins is positioned in a different channel of the plurality of channels.

6. The GNSS patch antenna of claim 5 , wherein each conduction pin of the plurality of conduction pins comprises a plurality of vias connected by one or more connection pads, and wherein each conduction pin of the plurality of conduction pins is adjacent to but does not contact electrically conductive elements in the middle laminate or the bottom laminate.

7. The GNSS patch antenna of claim 1 , wherein the ground well increases a volume of the GNSS patch antenna to optimize a detectable frequency range associated with the GNSS patch antenna.

8. A system including a plurality of Global Navigation Satellite System (GNSS) patch antennas, comprising:
a first GNSS patch antenna comprising:
an antenna board comprising a first side and a second side opposite the first side;
a first top laminate coupled to the antenna board and positioned on the first side of the antenna board, the first top laminate including at least one first electrically conductive antenna element configured to receive GNSS signals;
a first bottom laminate coupled to the antenna board and positioned on the second side of the antenna board;
a first ground well covering exposed surfaces of the first bottom laminate and at least an exposed portion of a surface of the second side of the antenna board, the first ground well comprising an electrically conductive material, wherein at least a portion of the surface of the antenna board that is covered by the first bottom laminate is free from the electrically conductive material; and
a first plurality of channels extending from an upper one of the at least one first electrically conductive antenna element of the first top laminate to a first side of the first bottom laminate, wherein the first side of the first bottom laminate is positioned opposite from a second side of the first bottom laminate and is adjacent to the second side of the antenna board; and

a second GNSS patch antenna comprising:
a second top laminate coupled to the antenna board and positioned on the first side of the antenna board, the second top laminate including at least one second electrically conductive antenna element configured to receive GNSS signals;
a second bottom laminate coupled to the antenna board and positioned on the fourth second side of the antenna board;
a second ground well covering exposed surfaces of the second bottom laminate and at least an exposed portion of a surface of the second side of the antenna board, the second ground well comprising an electrically conductive material, wherein at least a portion of the surface of the antenna board that is covered by the second bottom laminate is free from the electrically conductive material; and
a second plurality of channels extending from an upper one of the at least one second electrically conductive antenna elements of the second top laminate to a first side of the second bottom laminate, wherein the first side of the second bottom laminate is positioned opposite from a second side of the second bottom laminate that is adjacent to the second side of the antenna board.

9. The system of claim 8 , wherein:
the at least one first electrically conductive antenna element has a geometrical shape similar to a geometrical shape of the first top laminate and is comprised of copper; and
the at least one second electrically conductive antenna element has a geometrical shape similar to a geometrical shape of the second top laminate and is comprised of copper.

10. The system of claim 8 , wherein:
the first top laminate defines a first three-dimensional shape, the first bottom laminate defines a second three-dimensional shape, and at least two dimensions of the first three-dimensional shape and the second three-dimensional shape are geometrically similar; and
the second top laminate defines a third three-dimensional shape, the second bottom laminate defines a fourth three-dimensional shape, and at least two dimensions of the third three-dimensional shape and the fourth three-dimensional shape are geometrically similar.

11. The system of claim 10 , wherein:
the first three-dimensional shape and the second three-dimensional shape are differently sized cylindrical shapes; and
the third three-dimensional shape and the fourth three-dimensional shape are differently sized cylindrical shapes.

12. The system of claim 11 , wherein the first three-dimensional shape is the same as the third three-dimensional shape, wherein the second three-dimensional shape is the same as the fourth three-dimensional shape.

13. The system of claim 8 , further comprising:
a first plurality of conduction pins corresponding to the first plurality of channels, wherein each conduction pin of the first plurality of conduction pins is positioned in a different channel of the first plurality of channels; and
a second plurality of conduction pins corresponding to the second plurality of channels, wherein each conduction pin of the second plurality of conduction pins is positioned in a different channel of the second plurality of channels.

14. The system of claim 13 , wherein:
each conduction pi

Assignees

• Trimble Inc

Inventors

• Atkinson John
• Weisenburger Shawn
• Wallace Gregory

Classifications

• H01Q21/28

  Combinations of substantially independent non-interacting antenna units or systems {(multiple beam H01Q25/00)} · CPC title

• H01Q1/48

  Earthing means; Earth screens; Counterpoises · CPC title

• H01Q1/36

  Structural form of radiating elements, e.g. cone, spiral, umbrella; {Particular materials used therewith}(H01Q1/08, H01Q1/14 take precedence) · CPC title

• H01Q21/08

  the units being spaced along or adjacent to a rectilinear path {(waveguide fed H01Q21/0037)} · CPC title

• H01Q1/22

  by structural association with other equipment or articles · CPC title