PLANER ANTENNA STRUCTURE

• US 20090073054A1
• Filed: 11/26/2008
• Published: 03/19/2009
• Est. Priority Date: 06/12/2006
• Status: Active Grant

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Broadcom Corporation (Broadcom, Inc.)
• Inventors: YOON, SEUNGHWAN, DE FLAVIIS, FRANCO, ROFOUGARAN, AHMADREZA (REZA)
• Granted Patent: US 8,049,676 B2
• Time in Patent Office: Days
• US Class Current: 343/700.MS
• CPC Class Codes: H01Q 1/2216 used in interrogator/reader equipment
• CPC Class Codes: H01Q 1/243 with built-in antennas
• CPC Class Codes: H01Q 1/362 for broadside radiating helical antennas
• CPC Class Codes: H01Q 1/38 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 Class Codes: H01Q 11/083 Tapered helical aerials, e.g. conical spiral aerials

Abstract

A planer antenna structure includes a first planer antenna and a second planer antenna. The first planer antenna has a first axial orientation and a conductive antenna pattern on a first surface of a supporting substrate. The second planer antenna has a second axial orientation and the conductive antenna pattern on the first surface of the supporting substrate.

Claims

1. A planer antenna structure comprises:

a first planer antenna having a first axial orientation, wherein the first planer antenna has a conductive antenna pattern on a first surface of a supporting substrate; and

a second planer antenna having a second axial orientation, wherein the second planer antenna has the conductive antenna pattern on the first surface of the supporting substrate.

2. The planer antenna structure of claim 1 further comprises:

a ground pattern on a second surface of the supporting substrate to provide a ground connection for the first and second planer antennas, wherein the ground pattern is approximately centered at an intersection of the first and second axial orientations and the first and second planer antennas are off-center of the intersection of the first and second axial orientations.

3. The planer antenna structure of claim 2, wherein the ground pattern comprises:

a first geometric shape of a conductive material approximately centered at the intersection of the first and second axial orientations; and

a radial wall of the conductive material, wherein the radial wall is electrically coupled to the first geometric shape of the conductive material and extends at least a length of the conductive antenna pattern along an axis that is between the first and second axial orientations.

4. The planer antenna structure of claim 3 further comprises:

a corresponding image of the radial wall on the first surface of the supporting structure, wherein the corresponding image of the radial wall is of the conductive material and is electrically coupled to the ground pattern.

5. The planer antenna structure of claim 2 further comprises:

a third planer antenna having a third axial orientation, wherein the third planer antenna has the conductive antenna pattern on the first surface of the supporting substrate; and

a fourth planer antenna having a fourth axial orientation, wherein the fourth planer antenna has the conductive antenna pattern on the first surface of the supporting, wherein the ground pattern is approximately centered at an intersection of the first, second, third, and fourth axial orientations and the first, second, third, and fourth planer antennas are off-center of the intersection of the first, second, third, and fourth axial orientations.

6. The planer antenna structure of claim 5, wherein the ground pattern comprises:

a first geometric shape of a conductive material approximately centered at the intersection of the first, second, third, and fourth axial orientations; and

a plurality of radial walls of the conductive material, wherein the plurality of radial walls is electrically coupled to the first geometric shape of the conductive material and each of the plurality of radial walls extends at least a length of the conductive antenna pattern along a corresponding one of a plurality of axis that is between a pair of the first, second, third, and fourth axial orientations.

7. The planer antenna structure of claim 6 further comprises:

a corresponding image of the plurality of radial walls on the first surface of the supporting structure, wherein the corresponding image of the plurality of radial walls is of the conductive material and is electrically coupled to the ground pattern.

9. The transmit and receive planer antenna structure of claim 7 further comprises:

a ground pattern on a second surface of the supporting substrate to provide a ground connection for the transmit planer antenna and receive planer antenna, wherein the ground pattern is approximately centered at an intersection of the first and second axial orientations, and the first transmit planer antenna and the first receive planer antenna are off-center of the intersection of the first and second axial orientations.

10. The transmit and receive planer antenna structure of claim 9, wherein the ground pattern comprises:

a first geometric shape of a conductive material approximately centered at the intersection of the first and second axial orientations; and

a radial wall of the conductive material, wherein the radial wall is electrically coupled to the first geometric shape of the conductive material and extends at least a length of the conductive antenna pattern along an axis that is between the first and second axial orientations.

11. The transmit and receive planer antenna structure of claim 10 further comprises:

a corresponding image of the radial wall on the first surface of the supporting structure, wherein the corresponding image of the radial wall is of the conductive material and is electrically coupled to the ground pattern.

12. The transmit and receive planer antenna structure of claim 9 further comprises:

a second transmit planer antenna having a third axial orientation, wherein the second transmit planer antenna has the conductive antenna pattern on the first surface of the supporting substrate; and

a second receive planer antenna having a fourth axial orientation, wherein the fourth planer antenna has the conductive antenna pattern on the first surface of the supporting, wherein the ground pattern is approximately centered at an intersection of the first, second, third, and fourth axial orientations and the first transmit planer antenna, the second transmit planer antenna, the first receive planer antenna, and second receive planer antenna are off-center of the intersection of the first, second, third, and fourth axial orientations.

13. The transmit and receive planer antenna structure of claim 12, wherein the ground pattern comprises:

a first geometric shape of a conductive material approximately centered at the intersection of the first, second, third, and fourth axial orientations; and

a plurality of radial walls of the conductive material, wherein the plurality of radial walls is electrically coupled to the first geometric shape of the conductive material and each of the plurality of radial walls extends at least a length of the conductive antenna pattern along a corresponding one of a plurality of axis that is between a pair of the first, second, third, and fourth axial orientations.

14. The transmit and receive planer antenna structure of claim 13 further comprises:

a corresponding image of the plurality of radial walls on the first surface of the supporting structure, wherein the corresponding image of the plurality of radial walls is of the conductive material and is electrically coupled to the ground pattern.

8. A transmit and receive planer antenna structure comprises:

a first transmit planer antenna having a first axial orientation, wherein the first transmit planer antenna has a conductive antenna pattern on a first surface of a supporting substrate; and

a first receive planer antenna having a second axial orientation, wherein the first receive planer antenna has the conductive antenna pattern on the first surface of the supporting substrate.