US-12627056-B2 - Antenna assembly and electronic device

US12627056B2US 12627056 B2US12627056 B2US 12627056B2US-12627056-B2

Abstract

An antenna assembly includes: a first dielectric layer having a first radiation patch and a parasitic radiation patch; a second dielectric layer arranged on a side of the first dielectric layer facing away from the first radiation patch, and having a second radiation patch; and a metal layer arranged on a side of the second dielectric layer facing away from the second radiation patch. The metal layer includes a feeding connector, the feeding connector is connected with the second radiation patch in an electrically conductive manner, the feeding connector is configured to input a feeding signal to the second radiation patch, and the second radiation patch is coupled with the first radiation patch and/or the parasitic radiation patch to form at least two polarized radiation beams.

Inventors

Wei Wang

Assignees

BEIJING XIAOMI MOBILE SOFTWARE CO., LTD.

Dates

Publication Date: 20260512
Application Date: 20230926
Priority Date: 20230314

Claims (14)

1 . An antenna assembly, comprising: a first dielectric layer having a first radiation patch and a parasitic radiation patch, wherein the first radiation patch comprises a first square structure, and the parasitic radiation patch comprises strip structures arranged around the first square structure and distributed centro-symmetrically with respect to a center of the first square structure; a second dielectric layer arranged on a side of the first dielectric layer facing away from the first radiation patch, and having a second radiation patch, wherein the second radiation patch comprises a second square structure, and at least part of projections of the first radiation patch and the second radiation patch on the second dielectric layer overlap; and a metal layer arranged on a side of the second dielectric layer facing away from the second radiation patch, wherein the metal layer comprises a feeding connector, the feeding connector is connected with the second radiation patch in an electrically conductive manner, the feeding connector is configured to input a feeding signal to the second radiation patch, and the second radiation patch is coupled with the first radiation patch and/or the parasitic radiation patch to form at least two polarized radiation beams, wherein the feeding connector comprises a first probe and a second probe, and the metal layer has a first avoiding circular hole centered on the first probe and a second avoiding circular hole centered on the second probe; wherein the second dielectric layer comprises a first bonding pad and a second bonding pad connected to the second radiation patch, the first probe is connected with the first bonding pad, and the second probe is connected with the second bonding pad, wherein the first bonding pad and the second bonding pad are located outside an edge of the second radiation patch.
2 . The antenna assembly according to claim 1 , wherein the first bonding pad and the second bonding pad are connected with adjacent sides of the second radiation patch, respectively.
3 . The antenna assembly according to claim 1 , wherein the first probe comprises a first end connected with the first bonding pad, and a second end connected with one of a coaxial line, a microstrip line and a stripline in an electrically conductive manner; wherein the second probe comprises a first end connected with the second bonding pad, and a second end connected with one of a coaxial line, a microstrip line and a stripline in an electrically conductive manner.
4 . The antenna assembly according to claim 1 , wherein diameters of the first avoiding circular hole and the second avoiding circular hole are greater than or equal to 0.25 mm, and less than or equal to 0.35 mm.
5 . The antenna assembly according to claim 1 , further comprising a shorting member, wherein the shorting member penetrates through the second dielectric layer, and two ends of the shorting member are connected with the metal layer and the second radiation patch in an electrically conductive manner, respectively.
6 . The antenna assembly according to claim 5 , wherein the shorting member comprises a columnar structure connected with a center of the second radiation patch.
7 . The antenna assembly according to claim 1 , wherein a length of the strip structure is greater than a side length of the first square structure.
8 . The antenna assembly according to claim 1 , wherein the strip structure has a rectangular shape, and two opposite sides of the strip structure are parallel to a side of the first square structure.
9 . The antenna assembly according to claim 1 , wherein projections of a center of the first radiation patch and a center of the second radiation patch on the second dielectric layer overlap.
10 . The antenna assembly according to claim 1 , wherein a side length of the second square structure is greater than a side length of the first square structure.
11 . The antenna assembly according to claim 1 , further comprising a shielding member, wherein the shielding member is arranged on peripheries of the parasitic radiation patch and the second radiation patch, to surround the parasitic radiation patch and the second radiation patch.
12 . The antenna assembly according to claim 11 , wherein the shielding member comprises hole-shaped structures penetrating through the first dielectric layer, the second dielectric layer and the metal layer, and arranged at intervals.
13 . The antenna assembly according to claim 1 , further comprising a bonding layer arranged between the first dielectric layer and the second dielectric layer, and configured to bond the first dielectric layer with the second dielectric layer.
14 . An electronic device, comprising an antenna assembly, and the antenna assembly comprising: a first dielectric layer having a first radiation patch and a parasitic radiation patch, wherein the first radiation patch comprises a first square structure, and the parasitic radiation patch comprises strip structures arranged around the first square structure and distributed centro-symmetrically with respect to a center of the first square structure; a second dielectric layer arranged on a side of the first dielectric layer facing away from the first radiation patch, and having a second radiation patch, wherein the second radiation patch comprises a second square structure, and at least part of projections of the first radiation patch and the second radiation patch on the second dielectric layer overlap; and a metal layer arranged on a side of the second dielectric layer facing away from the second radiation patch, wherein the metal layer comprises a feeding connector, the feeding connector is connected with the second radiation patch in an electrically conductive manner, the feeding connector is configured to input a feeding signal to the second radiation patch, and the second radiation patch is coupled with the first radiation patch and/or the parasitic radiation patch to form at least two polarized radiation beams, wherein the feeding connector comprises a first probe and a second probe, and the metal layer has a first avoiding circular hole centered on the first probe and a second avoiding circular hole centered on the second probe; wherein the second dielectric layer comprises a first bonding pad and a second bonding pad connected to the second radiation patch, the first probe is connected with the first bonding pad, and the second probe is connected with the second bonding pad, wherein the first bonding pad and the second bonding pad are located outside an edge of the second radiation patch.

Description

CROSS-REFERENCE TO RELATED APPLICATION This application is based on and claims priority to Chinese Patent Application No. 202310267819.3 filed on Mar. 14, 2023, the entire contents of which are incorporated herein by reference for all purposes. BACKGROUND The millimeter wave communication refers to radio frequency communication using the millimeter waves, or extremely high frequencies (EHF), as the carrier of information transmission. The millimeter wave has prospects for wide application because of its short wavelength and wide frequency band, which can effectively solve many problems faced by high-speed broadband wireless access. In the related art, including a millimeter wave antenna assembly in an electronic device will occupy the limited space inside the device and affect the implementation of other functions of the electronic device. Therefore, improving the bandwidth and performance of the millimeter-wave antenna based on a limited antenna size has become a focus of further development. SUMMARY The present disclosure relates to a field of antennas, and in particular to an antenna assembly and an electronic device. Embodiments of a first aspect of the present disclosure provide an antenna assembly, and the antenna assembly includes: a first dielectric layer having a first radiation patch and a parasitic radiation patch, in which the first radiation patch includes a first square structure, and the parasitic radiation patch includes strip structures arranged around the first square structure and distributed centro-symmetrically with respect to a center of the first square structure; a second dielectric layer arranged on a side of the first dielectric layer facing away from the first radiation patch, and having a second radiation patch, in which the second radiation patch includes a second square structure, and at least part of projections of the first radiation patch and the second radiation patch on the second dielectric layer overlap; and a metal layer arranged on a side of the second dielectric layer facing away from the second radiation patch, in which the metal layer includes a feeding connector, the feeding connector is connected with the second radiation patch in an electrically conductive manner, the feeding connector is configured to input a feeding signal to the second radiation patch, and the second radiation patch is coupled with the first radiation patch and/or the parasitic radiation patch to form at least two polarized radiation beams. Embodiments of a second aspect of the present disclosure provide an electronic device, and the electronic device includes an antenna assembly. The antenna assembly includes: a first dielectric layer having a first radiation patch and a parasitic radiation patch, in which the first radiation patch includes a first square structure, and the parasitic radiation patch includes strip structures arranged around the first square structure and distributed centro-symmetrically with respect to a center of the first square structure; a second dielectric layer arranged on a side of the first dielectric layer facing away from the first radiation patch, and having a second radiation patch, in which the second radiation patch includes a second square structure, and at least part of projections of the first radiation patch and the second radiation patch on the second dielectric layer overlap; and a metal layer arranged on a side of the second dielectric layer facing away from the second radiation patch, in which the metal layer includes a feeding connector, the feeding connector is connected with the second radiation patch in an electrically conductive manner, the feeding connector is configured to input a feeding signal to the second radiation patch, and the second radiation patch is coupled with the first radiation patch and/or the parasitic radiation patch to form at least two polarized radiation beams. It is to be understood that both the foregoing general description and the following detailed description are illustrative and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS In order to explain the technical solution in the embodiments of the present disclosure more clearly, the drawings needed to be used in the description of the embodiments will be briefly introduced below. Apparently, the drawings in the following description are only some embodiments of the present disclosure. For those ordinary skilled in the art, other drawings can be obtained according to these drawings without inventive efforts. FIG. 1 is an exploded view of an antenna assembly in an illustrative embodiment of the present disclosure. FIG. 2 is a sectional view of an antenna assembly in an illustrative embodiment of the present disclosure. FIG. 3 is an assembled view of an antenna assembly in an illustrative embodiment of the present disclosure. FIG. 4 is a perspective view of an antenna assembly in an illustrative embodiment of the present di