Multi-antenna system with slotted antenna elements and extended ground plane

Patent metadata

Field	Value
Publication number	US-2025385440-A1
Application number	US-202519228508-A
Country	US
Kind code	A1
Filing date	Jun 4, 2025
Priority date	Jun 14, 2024
Publication date	Dec 18, 2025
Grant date	—

Abstract

Multi-antenna system with slotted antenna elements and an extended ground plane. In one embodiment, the multi-antenna system includes a flexible substrate having: a coplanar extended ground plane; a first slotted antenna element having a first feed structure connected with a first coplanar wave guide, the first feed structure being surrounded by the coplanar extended ground plane; and a second slotted antenna element comprising a second feed structure connected with a second coplanar wave guide, the second feed structure being surrounded by the coplanar extended ground plane. In a variant, the flexible substrate includes an isolation enhancing slot that is positioned between portions of the first slotted antenna element and portions of the second slotted antenna element.

First claim

1 . A multi-antenna system, comprising:
a flexible substrate comprising:
a coplanar extended ground plane;
a first slotted antenna element comprising a first feed structure connected with a first coplanar wave guide, the first feed structure being surrounded by the coplanar extended ground plane; and
a second slotted antenna element comprising a second feed structure connected with a second coplanar wave guide, the second feed structure being surrounded by the coplanar extended ground plane.

2 . The multi-antenna system of claim 1 , wherein the flexible substrate further comprises an isolation enhancing slot that is positioned between portions of the first slotted antenna element and portions of the second slotted antenna element.

3 . The multi-antenna system of claim 2 , wherein portions of the isolation enhancing slot are surrounded by the coplanar extended ground plane.

4 . The multi-antenna system of claim 1 , wherein the first feed structure comprises a rectangular shape having a right-side, a left-side, a top-side, and a bottom-side.

5 . The multi-antenna system of claim 4 , wherein a respective gap is present between the right-side, the left-side, the top-side, and the bottom-side of the first feed structure and the coplanar extended ground plane.

6 . The multi-antenna system of claim 5 , wherein the gap between the right-side of the first feed structure and the coplanar extended ground plane is larger in dimension than the gap between the top-side of the first feed structure and the coplanar extended ground plane.

7 . The multi-antenna system of claim 6 , wherein the gap between the top-side of the first feed structure and the coplanar extended ground plane is larger in dimension than the gap between the left-side of the first feed structure and the coplanar extended ground plane.

8 . The multi-antenna system of claim 7 , wherein the gap between the left-side of the first feed structure and the coplanar extended ground plane is larger in dimension than the gap between the bottom-side of the first feed structure and the coplanar extended ground plane.

9 . The multi-antenna system of claim 1 , further comprising a connection structure assembly, the first slotted antenna element being disposed between the connection structure and the second slotted antenna element.

10 . The multi-antenna system of claim 9 , wherein the second feed structure comprises a rectangular shape having a right-side, a left-side, a top-side, and a bottom-side.

11 . The multi-antenna system of claim 10 , wherein a respective gap is present between the right-side, the left-side, the top-side, and the bottom-side of the second feed structure and the coplanar extended ground plane.

12 . The multi-antenna system of claim 11 , wherein the gap between the top-side of the second feed structure and the coplanar extended ground plane is larger in dimension than the gap between the bottom-side of the second feed structure and the coplanar extended ground plane.

13 . The multi-antenna system of claim 12 , wherein the gap between the bottom-side of the second feed structure and the coplanar extended ground plane is larger in dimension than the gap between the right-side of the second feed structure and the coplanar extended ground plane.

14 . The multi-antenna system of claim 13 , wherein the gap between the right-side of the second feed structure and the coplanar extended ground plane is larger in dimension than the gap between the left-side of the second feed structure and the coplanar extended ground plane.

15 . The multi-antenna system of claim 1 , further comprising a third slotted antenna element comprising a third feed structure connected with a third coplanar wave guide, the third feed structure being surrounded by the coplanar extended ground plane.

16 . The multi-antenna system of claim 15 , wherein the third slotted antenna element is disposed to the left of both the first slotted antenna element and the second slotted antenna element.

17 . The multi-antenna system of claim 16 , further comprising a fourth non-slotted antenna element comprising a fourth co-planar wave guide, the fourth non-slotted antenna element being larger in dimension than each of the first slotted antenna element, the second slotted antenna element, and the third slotted antenna element.

18 . The multi-antenna system of claim 17 , further comprising a stair casing feature that is implemented adjacent the fourth co-planar wave guide.

19 . The multi-antenna system of claim 1 , further comprising a connection structure assembly, the connection structure assembly further comprising a rigid or semi-rigid printed circuit board, the connection structure assembly further comprising a connection interface that connects the rigid or semi-rigid circuit board to the flexible substrate.

20 . The multi-antenna system of claim 19 , wherein the connection structure assembly further comprises:
a first coaxial cable that is connected with the rigid or semi-rigid circuit board, the first coaxial cable being in signal communication with the first coplanar wave guide; and a second coaxial cable that is connected with the rigid or semi-rigid circuit board, the second coaxial cable being in signal communication with the second coplanar wave guide.

Assignees

• Taoglas Group Holdings Ltd

Inventors

• Mirzaee Milad
• Samson Gregory Jay
• Walji Zaaminali
• Frank Patrick Carl

Classifications

• H01Q5/40

  Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements · CPC title

• H01Q9/30

  with feed to end of elongated active element, e.g. unipole (H01Q9/44 takes precedence) · CPC title

• H01Q13/106

  Microstrip slot antennas (patch antenna elements H01Q9/0407) · CPC title

• H01Q1/521

  reducing the coupling between adjacent antennas · CPC title

• H01Q1/38

  formed by a conductive layer on an insulating support {(patch antennas H01Q9/0407; microstrip dipole antennas H01Q9/065; microstrip slot antennas H01Q13/106; transmission line microstrip antennas H01Q13/206; manufacturing reflecting surfaces using insulating material for supporting the reflecting surface  H01Q15/142)} · CPC title