Patch antenna array

Patent metadata

Field	Value
Publication number	US-11652301-B2
Application number	US-201916379553-A
Country	US
Kind code	B2
Filing date	Apr 9, 2019
Priority date	Apr 11, 2018
Publication date	May 16, 2023
Grant date	May 16, 2023

Abstract

Methods, systems, and devices for wireless communication are described. According to one or more aspects, the described apparatus includes one or more stacks of patch radiators (such as patch antennas) comprising at least a first patch radiator and a second patch radiator. The first patch radiator is associated with a low-band frequency; the second patch radiator is associated with a high-band frequency. The first patch radiator and the second patch radiator may overlap a ground plane, which may be asymmetric. Some or all patch radiators in a stack may be rotated relative to the ground plane, such that some or all edge of a patch radiator may be nonparallel with one or more edges of the ground plane. Further, each patch radiator stack may include separate feeds for each of at least two frequencies and two polarizations, and thus at least four feeds (one for each frequency/polarization combination) in total.

First claim

What is claimed is:

1. An antenna system, comprising:
a ground plane at a first layer of a printed circuit board (PCB), wherein a first edge of the ground plane is perpendicular to and longer than a second edge of the ground plane; and
a phased array comprising an array of patch radiator stacks overlapping the ground plane, wherein a first patch radiator stack in the array comprises a first patch radiator at a second layer of the PCB, the first patch radiator having a first edge that is nonparallel with the first edge of the ground plane and with the second edge of the ground plane, and wherein a second patch radiator stack in the array is spaced from the first patch radiator stack and rotated one-hundred and eighty (180) degrees relative to the first patch radiator stack, the second patch radiator stack comprises a second patch radiator at the second layer of the PCB, the second patch radiator having a first edge that is nonparallel with the first edge of the ground plane and with the second edge of the ground plane.

2. The antenna system of claim 1 , wherein at least four edges of the first patch radiator are nonparallel with the first edge of the ground plane and with the second edge of the ground plane.

3. The antenna system of claim 1 , wherein the first edge of the first patch radiator is oriented at a forty-five (45) degree angle relative to the first edge of the ground plane and relative to the second edge of the ground plane.

4. The antenna system of claim 1 , wherein the first patch radiator stack in the array further comprises:
a third patch radiator at a third layer of the PCB, the third patch radiator having a first edge that is nonparallel with the first edge of the ground plane and with the second edge of the ground plane.

5. The antenna system of claim 4 , wherein the first edge of the third patch radiator is parallel with the first edge of the first patch radiator.

6. The antenna system of claim 4 , wherein each edge of the third patch radiator is nonparallel with the first edge of the ground plane and with the second edge of the ground plane.

7. The antenna system of claim 4 , wherein each edge of the third patch radiator is nonparallel with each edge of the ground plane.

8. The antenna system of claim 1 , wherein a second edge of the first patch radiator is parallel with the first edge of the ground plane.

9. The antenna system of claim 8 , wherein:
the second edge of the first patch radiator is shorter than the first edge of the first patch radiator;
a midpoint of the first edge of the first patch radiator is separated from the first edge of the ground plane by a first distance; and
a midpoint of the second edge of the first patch radiator is separated from the first edge of the ground plane by a second distance that is less than the first distance.

10. The antenna system of claim 1 , wherein a third edge of the first patch radiator is parallel with the second edge of the ground plane.

11. The antenna system of claim 1 , wherein the first patch radiator stack in the array further comprises:
a third patch radiator at a third layer of the PCB and a fourth patch radiator at a fourth layer of the PCB, the third patch radiator and the fourth patch radiator both overlapping with the first patch radiator, wherein a first edge of the fourth patch radiator is parallel with the first edge of the first patch radiator.

12. The antenna system of claim 11 , wherein the first patch radiator stack in the array further comprises:
a set of parasitic patch radiators at the fourth layer of the PCB, the fourth patch radiator disposed between at least two parasitic patch radiators of the set within the fourth layer of the PCB.

13. The antenna system of claim 1 , wherein the first patch radiator stack in the array further comprises:
a set of parasitic patch radiators at a fourth layer of the PCB, each patch radiator of the set having a first edge that is parallel with the first edge of the first patch radiator.

14. The antenna system of claim 13 , wherein each parasitic patch radiator of the set has a second edge that is parallel with the first edge of the ground plane.

15. The antenna system of claim 13 , wherein each parasitic patch radiator of the set has at least four edges that are nonparallel with the first edge of the ground plane and with the second edge of the ground plane.

16. The antenna system of claim 1 , wherein the first edge of the first patch radiator is nonparallel with an axis that intersects a centroid of the first patch radiator of the first patch radiator stack and a centroid of the second patch radiator of the second patch radiator stack.

17. The antenna system of claim 1 , wherein the first patch radiator stack in the array further comprises:
a first feed configured to receive a first signal having a first polarization and associated with a first frequency band;
a second feed configured to receive a second signal having a second polarization and associated with the first frequency band;
a third feed configured to receive a third signal having the first polarization and associated with a second frequency band; and
a fourth feed configured to receive a fourth signal having the second polarization and associated with the second frequency band.

18. The antenna system of claim 17 , wherein the first patch radiator stack in the array further comprises:
a first low pass filter included in the first feed and configured to reject signals associated with the second frequency band;
a second low pass filter included in the second feed and configured to reject signals associated with the second frequency band;
a first high pass filter included in the third feed and configured to reject signals associated with the first frequency band; and
a second high pass filter included in the fourth feed and configured to reject signals associated with the first frequency band.

19. The antenna system of claim 18 , further comprising:
a first notch filter included in the first feed and configured to extract signals associated with the first frequency band;
a second notch filter included in the second feed and configured to extract signals associated with the first frequency band;
a third notch filter included in the third feed and configured to extract signals associated with the second frequency band; and
a fourth notch filter included in the fourth feed and configured to extract signals associated with the second frequency band.

20. The antenna system of claim 17 , wherein the first feed and the second feed are capacitively coupled with the first patch radiator.

21. The antenna system of claim 17 , wherein the third feed and the fourth feed are capacitively coupled with a third patch radiator, the third patch radiator at a third layer of the PCB.

22. The antenna system of claim 1 , wherein the first patch radiator has four edges or wherein the first patch radiator has eight edges.

23. The antenna system of claim 1 , wherein the first patch radiator is configured to operate at 24 GHz or higher.

24. A method for wireless communication, comprising:
receiving, at a stack of patch radiators that comprises at least two patch radiators, a first patch radiator of the at least two patch radiators having a first edge that is nonparallel with at least two edges of a ground plane and a second edge that is parallel with one of the two edges of the ground plane, the second edge being shorter than the first edge, a first signal h

Assignees

• Qualcomm Inc

Inventors

• Yang Taesik
• Fabrega Sanchez Jorge
• Tassoudji Mohammad Ali
• Wang Kevin Hsi Huai
• Kim Jeongil Jay

Classifications

• H01Q21/065 Primary

  Patch antenna array · CPC title

• H01Q25/00

  Antennas or antenna systems providing at least two radiating patterns (arrangements for changing or varying the orientation or the shape of the directional pattern H01Q3/00) · CPC title

• H01Q9/0414

  in a stacked or folded configuration · CPC title

• H01Q1/2283

  mounted in or on the surface of a semiconductor substrate as a chip-type antenna or integrated with other components into an IC package · CPC title

• H01Q1/246

  specially adapted for base stations · CPC title