Antenna module and communication device

Abstract

An antenna module includes a substrate, a radiation element and a ground element. The substrate includes a first surface and a second surface opposite to each other. The substrate is on the first surface. The radiation element includes a first feed point, a second feed point and four slots. The first feed point and the second feed are respectively in a two-dimensional axis direction of the radiation element. Two adjacent ones of the four slots are symmetrical to each other. The ground element is on the second surface.

Claims

1. An antenna module, comprising: a substrate including a first surface and a second surface opposite to each other; a radiating portion located on the first surface of the substrate, the radiating portion including a first feed point, a second feed point and four slots, the first feed point and the second feed point being respectively located along a two-dimensional axis of the radiating portion, and two adjacent slots being symmetrical to each other; and a grounding portion located on the second surface of the substrate; wherein, The first feed point and the second feed point receive the same feed signal alternately, so that the radiating part of the antenna module alternately transmits a first-dimensional polarized signal and a second-dimensional polarized signal.

2. The antenna module as claimed in claim 1, wherein the distance between the first feed point and an intersection point of the two-dimensional axis is the same as the distance between the second feed point and the intersection point of the two-dimensional axis.

3. The antenna module as described in claim 1, wherein the four slots are located around a point of intersection of the two-dimensional axes.

4. The antenna module as described in claim 2 or 3, wherein the intersection point of the two-dimensional axis is a center point of the radiating part.

5. The antenna module as claimed in claim 2, wherein the distance between the first feed point and the intersection of the two-dimensional axis and the distance between the second feed point and the intersection of the two-dimensional axis are both between 8 mm and 25 mm.

6. The antenna module as claimed in claim 5, wherein the distance between the first feed point and the intersection of the two-dimensional axis and the distance between the second feed point and the intersection of the two-dimensional axis are both between 10 mm and 20 mm.

7. The antenna module as claimed in claim 6, wherein the distance between the first feed point and the intersection of the two-dimensional axis and the distance between the second feed point and the intersection of the two-dimensional axis are between 14 mm and 17 mm, respectively.

8. The antenna module as claimed in claim 1, wherein the lengths of the four slots are each a quarter wavelength of the frequency band in which the radiating part operates.

9. The antenna module as described in claim 1, wherein the aspect ratio of each of the slots is between 44 and 13.

3.

10. A communication device, comprising: an antenna module, comprising: a substrate, including a first surface and a second surface opposite to each other; a radiating portion located on the first surface of the substrate, the radiating portion including a first feed point, a second feed point and four slots, the first feed point and the second feed point being respectively located along a two-dimensional axis of the radiating portion, and two adjacent slots being symmetrical to each other; and a grounding portion located on the second surface of the substrate; wherein, The first feed point and the second feed point receive the same feed signal alternately, so that the radiating part of the antenna module alternately transmits a first-dimensional polarization signal and a second-dimensional polarization signal; and a transceiver module is coupled to the first feed point and the second feed point.

11. The communication device as claimed in claim 10, wherein the distance between the first feed point and an intersection point of the two-dimensional axis is the same as the distance between the second feed point and the intersection point of the two-dimensional axis.

12. The communication device as claimed in claim 10, wherein the four slots are located around a point of intersection of the two-dimensional axes.

13. The communication device as described in claim 11 or 12, wherein the intersection of the two-dimensional axes is a center point of the radiating portion.

14. The communication device as claimed in claim 11, wherein the distance between the first feed point and the intersection of the two-dimensional axis and the distance between the second feed point and the intersection of the two-dimensional axis are both between 8 mm and 25 mm.

15. The communication device as claimed in claim 14, wherein the distance between the first feed point and the intersection of the two-dimensional axis and the distance between the second feed point and the intersection of the two-dimensional axis are both between 10 mm and 20 mm.

16. The communication device as claimed in claim 15, wherein the distance between the first feed point and the intersection of the two-dimensional axis and the distance between the second feed point and the intersection of the two-dimensional axis are both between 14 mm and 17 mm.

17. The communication device as claimed in claim 10, wherein the lengths of the four slots are each a quarter wavelength of the frequency band in which the radiating part operates.

18. The communication device as claimed in claim 10, wherein the aspect ratio of each of the slots is between 44 and 13.3.

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