EP4641834A1

EP4641834A1 - Antenna apparatus and terminal device

Info

Publication number: EP4641834A1
Application number: EP23905351.5A
Authority: EP
Inventors: Liuzhong YIN; Chengwei WU
Original assignee: Shenzhen TCL Digital Technology Co Ltd
Current assignee: Shenzhen TCL Digital Technology Co Ltd
Priority date: 2022-12-19
Filing date: 2023-09-25
Publication date: 2025-10-29
Also published as: WO2024131176A1; CN117117495A

Abstract

Disclosed in the present application are an antenna apparatus and a terminal device. The antenna apparatus comprises: a first antenna structure, which comprises a first radiation area and a first isolation area connected to the first radiation area; and a second antenna structure, which is arranged spaced apart from the first antenna structure, wherein the first isolation area is located between the first radiation area and the second antenna structure, and is used for isolating a wireless signal radiated by means of the first radiation area from a wireless signal radiated by means of the second antenna structure.

Description

This application claims priority to Chinese Patent Applications No. 202211633504.8, filed on December 19, 2022 and entitled "ANTENNA APPARATUS AND TERMINAL DEVICE". The entire disclosures of the above application are incorporated herein by reference.

TECHNICAL FIELD

The present application relates to the field of antenna technologies, and in particular to an antenna apparatus and a terminal device.

BACKGROUND TECHNOLOGY

For patch antennas, when two antennas are closely spaced in a limited space, wireless signals radiated by the two antennas may interfere with each other.

Technical Problem

For patch antennas, when two antennas are closely spaced in a limited space, wireless signals radiated by the two antennas may interfere with each other, thereby affecting a performance of the antennas.

SUMMARY OF INVENTION

A purpose of the present application is to provide an antenna apparatus and a terminal device that can effectively improve an isolation degree between antenna structures.
In order to achieve the above purpose, the present application adopts the following technical solutions:
The present application embodiment provides an antenna apparatus, including:
An embodiment of the present application provides an antenna apparatus, including:

a first antenna structure including a first radiation area and a first isolation area connected to the first radiation area.
a second antenna structure spaced apart from the first antenna structure.
the first isolation area is located between the first radiation area and the second antenna structure, and is configured to isolate a wireless signal radiated by the first radiation area from a wireless signal radiated by the second antenna structure.

In some embodiments of the antenna apparatus, the second antenna structure includes:

a second radiation area.
a second isolation area connected to the second radiation area, where the second isolation area is located between the second radiation area and the first isolation area, and is configured to isolate an antenna signal radiated by the first radiation area from an antenna signal radiated by the second radiation area.

In some embodiments of the antenna apparatus, the first antenna structure further includes:
a third isolation area connected to the first radiation area, where the third isolation area and the first isolation area are located on opposite sides of the first radiation area.
In some embodiments of the antenna apparatus, the second antenna structure further includes:
a fourth isolation area connected to the first radiation area, where the fourth isolation area and the second isolation area are located on opposite sides of the second radiation area.
In some embodiments of the antenna apparatus, the first isolation area includes:

a first base.
a first patch portion stacked on the first base.
a first via group including at least two rows of first metal vias arranged at intervals.
each of the first metal vias in the first via group extends through the patch portion, and at least a portion of the first metal vias in the first via group extends through the first base and the first patch portion.

In some embodiments of the antenna apparatus, the first radiation area includes:

an antenna cavity including a second base, a second patch portion, and a second via group stacked in layers.
a first feed hole is disposed on the second base, the first feed hole extends through the second base in a thickness direction of the base; a second feed hole is disposed on the second patch portion, one end of the second feed hole is connected to one end of the first feed hole, and another end of the second feed hole is located in the second patch portion.
the second via group includes a plurality of second metal vias, and the plurality of second metal vias all extend through the second base and the second patch portion, and are located at edges of the second base and the second patch portion, surrounding the first feed hole and the second feed hole to form three equivalent electrical walls.

In some embodiments of the antenna apparatus, the first patch portion includes a first metal layer, a first base material layer, and a second metal layer stacked in sequence; the second metal layer is located on a side close to the first base.
the first base includes a third metal layer, a second base material layer, a fourth metal layer, and a first feed layer stacked in sequence; the third metal layer is located on a side close to the second metal layer.
In some embodiments of the antenna apparatus, the first metal layer and the second metal layer are electrically connected through the first metal via.
In some embodiments of the antenna apparatus, the second patch portion includes a first ink layer, a third base material layer, and a fifth metal layer stacked in layers, and the first ink layer is located on a side close to the second base.

the second base includes a second ink layer, a fourth base material layer, a sixth metal layer, and a second feed layer stacked in sequence, and the second ink layer is located on a side close to the first ink layer.
a seventh metal layer is disposed on a periphery of the first ink layer; an eighth metal layer is disposed on a periphery of the second ink layer; each of the second metal vias extends through the fifth metal layer, the third base material layer, the seventh metal layer, the eighth metal layer, the fourth base material layer, the sixth metal layer, and the second feed layer.

In some embodiments of the antenna apparatus, the first patch portion and the second patch portion are integrally formed.
In some embodiments of the antenna apparatus, the antenna apparatus further includes a substrate, the substrate includes at least two antenna regions, and each of the antenna regions is formed with the first base and the second base in the corresponding antenna structure.
An embodiment of the present application further provides a terminal device, including an antenna apparatus, where the antenna apparatus includes:

In some embodiments of the terminal device, the second antenna structure includes:

In some embodiments of the terminal device, the first antenna structure further includes:
a third isolation area connected to the first radiation area, where the third isolation area and the first isolation area are located on opposite sides of the first radiation area.
In some embodiments of the terminal device, the second antenna structure further includes:
a fourth isolation area connected to the first radiation area, where the fourth isolation area and the second isolation area are located on opposite sides of the second radiation area.
In some embodiments of the terminal device, the first isolation area includes:

In some embodiments of the terminal device, the first radiation area includes:

In some embodiments of the terminal device, the first patch portion includes a first metal layer, a first base material layer, and a second metal layer stacked in sequence; the second metal layer is located on a side close to the first base.
the first base includes a third metal layer, a second base material layer, a fourth metal layer, and a first feed layer stacked in sequence; the third metal layer is located on a side close to the second metal layer.
In some embodiments of the terminal device, the second patch portion includes a first ink layer, a third base material layer, and a fifth metal layer stacked in layers, and the first ink layer is located on a side close to the second base.

In some embodiments of the terminal device, the antenna apparatus further includes a substrate, the substrate includes at least two antenna regions, and each of the antenna regions is formed with the first base and the second base in the corresponding antenna structure.

Beneficial Effects

The present application provides the antenna apparatus and the terminal device. In the antenna apparatus, an isolation area is disposed on an antenna structure. When two antenna structures are arranged at intervals, a wireless signal radiated by a first radiation area and a wireless signal radiated by an adjacent antenna structure can be isolated through the isolation area arranged in one of the antenna structures, thereby improving an isolation degree between the antenna structures.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate technical solutions in embodiments of the present application, accompanying drawings required for describing the embodiments are briefly introduced below. Apparently, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative efforts.

FIG. 1 is a first schematic diagram of an antenna structure in an antenna apparatus provided by the present application.
FIG. 2 is a second schematic diagram of an antenna structure in an antenna apparatus provided by the present application.
FIG. 3 is a third schematic diagram of an antenna structure in an antenna apparatus provided by the present application.
FIG. 4 is a fourth schematic diagram of an antenna structure in an antenna apparatus provided by the present application.
FIG. 5 is a first structural diagram of a first antenna structure in an antenna apparatus provided by the present application.
FIG. 6 is a perspective view of a first antenna structure in an antenna apparatus provided by the present application.
FIG. 7 is a schematic structural diagram of a first metal via and a second metal via in a first antenna structure in an antenna apparatus provided by the present application.
FIG. 8 is a schematic diagram of a microstrip feed line of a first structure of a first antenna structure in an antenna apparatus provided by the present application.
FIG. 9 is a second structural diagram of a first antenna structure in an antenna apparatus provided by the present application.
FIG. 10 is a schematic diagram of a microstrip feed line of a second structure of a first antenna structure in an antenna apparatus provided by the present application.
FIG. 11 is a schematic structural diagram of an antenna apparatus provided by the present application.
FIG. 12 is a graph showing a standing wave ratio of an antenna apparatus provided by the present application.
FIG. 13 is an S-curve diagram of an antenna apparatus provided by the present application.

DETAILED DESCRIPTION OF THE EMBODIMENTS

A purpose of the present application is to provide an antenna apparatus and a terminal device. In an antenna apparatus, by setting an isolation area in an antenna structure, an isolation degree between antenna structures can be effectively improved to ensure an overall performance of the antenna apparatus.
In order to make the purpose, technical solutions, and effects of the present application clearer and more specific, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present application and are not configured to limit the present application.
Referring to FIG. 1, the present application provides an antenna apparatus including a first antenna structure 11 and a second antenna structure 12. The first antenna structure 11 includes a first radiation area 111 and a first isolation area 112 connected to the first radiation area 111. The second antenna structure 12 is spaced apart from the first antenna structure 11. The first isolation area 112 is located between the first radiation area 111 and the second antenna structure 12 and is configured to isolate a wireless signal radiated by the first radiation area 111 from a wireless signal radiated by the second antenna structure 12.
In the present application, by setting the isolation area in the antenna structure, when two antenna structures are arranged at an interval, the wireless signal radiated by the first radiation area 111 and the wireless signal radiated by the adjacent antenna structure can be isolated by the isolation area set in one of the antenna structures, thereby improving an isolation degree between the antenna structures.
Referring to FIG. 2, in some embodiments, the second antenna structure 12 includes a second radiation area 121 and a second isolation area 122. The second isolation area 122 is connected to the second radiation area 121. The second isolation area 122 is located between the second radiation area 121 and the first isolation area 112, and is configured to isolate an antenna signal radiated by the first radiation area 111 from an antenna signal radiated by the second radiation area 121. In this embodiment, in order to further enhance the isolation degree, the isolation area may be provided on the second antenna structure 12 to form the second isolation area 122. At this time, the first radiation area 111 and the second radiation area 121 are isolated from each other by the first isolation area 112 and the second isolation area 122, thereby increasing the isolation degree between the first structure and the second antenna structure 12.
It should be noted that if two antenna structures are provided in the antenna apparatus, they are respectively the first antenna structure 11 and the second antenna structure 12. The first antenna structure 11 and the second antenna structure 12 are a receiving antenna and a transmitting antenna, respectively. The isolation areas are provided in both antennas. Then, the isolation areas can be configured to weaken a beam gain in a relative direction, so that an ability of the two antennas to send and receive corresponding signals to each other is weakened, and the isolation degree between the transmitting and receiving antennas is increased.
Referring to FIG. 3, in some embodiments, more than two antenna structures may be provided in the antenna apparatus. If three antenna structures are arranged side by side with intervals, the antenna apparatus may further include a third antenna structure 13, and the first antenna structure 11 is located between the second antenna structure 12 and the third antenna structure 13. At this time, in order to isolate the antenna signal radiated by the first antenna structure 11 and an antenna signal radiated by the third antenna structure 13, the first antenna structure 11 may further be provided with a third isolation area 113. The third isolation area 113 is connected to the first radiation area 111. The third isolation area 113 and the first isolation area 112 are located at two opposite sides of the first radiation area 111. The third isolation area 113 is located between the third antenna structure 13 and the first radiation area 111. The third isolation area 113 can isolate the antenna signal radiated by the first radiation area 111 from the antenna signal radiated by the third antenna structure 13.
Please refer to FIG. 4. Similarly, if four antenna structures are provided in the antenna apparatus, the antenna apparatus further includes a fourth antenna structure 14. The third antenna structure 13 is located between the fourth antenna structure 14 and the first antenna structure 11. Similarly, the second antenna structure 12 also includes a fourth isolation area 123. The fourth isolation area 123 is connected to the second radiation area 121, and the fourth isolation area 123 and the second isolation area 122 are respectively located on two opposite sides of the second radiation area 121. That is, the fourth isolation area 123 is located between the second radiation area 121 and the fourth antenna structure 14, and is configured to isolate an antenna signal radiated by the fourth antenna structure 14 from the antenna signal radiated by the second radiation area 121.
In the present application, one isolation area or two isolation areas may be set in the antenna structure. The specific setting may be made according to the needs of the actual antenna apparatus, and the present application does not impose any limitation on this.
Take one of the antenna structures, namely the first antenna structure 11, as an example; please refer to FIG. 5, in some embodiments, the first isolation area 112 includes a first base 100; a first patch portion 200 stacked on the first base 100; and a first via group, which includes at least two rows of first metal vias 310 arranged at intervals. Each of the first metal vias 310 in the first via group extends through the patch portion, and at least a portion of the first metal vias 310 in the first via group extends through the first base 100 and the first patch portion 200. In this embodiment, the first metal vias 310 are arranged in rows to form an equivalent electrical wall, and the number of the first metal vias 310 can be adjusted according to actual needs, thereby adjusting the number of the equivalent electrical walls to achieve different isolation effects. Considering a thickness of the first base 100, if the first base 100 is very thin, a plurality of via holes are provided on the first base 100, which may easily damage the first base 100. Therefore, in this embodiment, the first metal vias 310 all extend through the first patch portion 200, and a portion of the first metal vias 310 extends through the first base 100, which can effectively improve a reliability of the first base 100.
In some embodiments, the first radiation area 111 includes an antenna cavity. The antenna cavity includes a second base 500, a second patch portion 400, and a second via group stacked in layers. A first feed hole 710 is formed on the second base 500. The first feed hole 710 extends through the second base 500 in a thickness direction of the base. The second patch portion 400 is provided with a second feed hole 720. One end of the second feed hole 720 is connected to one end of the first feed hole 710, and the other end of the second feed hole 720 is located in the second patch portion 400. The second via group includes a plurality of second metal vias 610, and the plurality of second metal vias extend through the second base 500 and the second patch portion 400, and are located at edges of the second base 500 and the second patch portion 400, surrounding the first feed hole 710 and the second feed hole 720 to form three equivalent electrical walls. The three equivalent electrical walls surround to form a notch. The notch serves as a radiation window through which an antenna signal is radiated outward.
As an embodiment, a metal plate or a branch piece may be disposed at the other end of the second feed hole 720 located inside the patch portion, and the metal plate or the branch piece together with the second feed hole 720 has a function of tuning impedance.
Please refer to FIG. 6 and FIG. 7 together. In some embodiments, the first patch portion 200 includes a first metal layer 210, a first base material layer 220, and a second metal layer stacked in sequence. The second metal layer is located on a side close to the first base 100. The second base 500 includes a third metal layer, a first base material layer 120, a fourth metal layer 130, and a first feed layer 140 which are stacked in sequence. The third metal layer is located on a side close to the second metal layer and is bonded to the second metal layer. In this embodiment, the first metal layer 210 and the second metal layer are both copper layers on two opposite surfaces of the first base material layer 220. The first metal layer 210 and the second metal layer are electrically connected through the first metal via 310. The first base 100 includes a third metal layer, a first base material layer 120, a fourth metal layer 130, and a first feed layer 140 which are stacked in sequence. The third metal layer is located on a side close to the second metal layer. Similarly, the third metal layer and the fourth metal layer 130 are copper layers located on two opposite surfaces of the first base material layer 120, so as to electrically connect to the first metal via 310.
In some embodiments, the second patch portion 400 includes a first ink layer 410, a third base material layer 420, and a fifth metal layer 430 stacked in layers. The first ink layer 410 is located on a side close to the second base 500. The second base 500 includes a second ink layer 510, a fourth base material layer 520, a sixth metal layer 530, and a second feed layer 540 which are stacked in sequence. The second ink layer 510 is located on a side close to the first ink layer 410 and is attached to the first ink layer 410. A seventh metal layer is disposed on a periphery of the first ink layer 410. An eighth metal layer is disposed on a periphery of the second ink layer 510. Each second metal via 610 extends through the fifth metal layer 430, the third base material layer 420, the seventh metal layer, the eighth metal layer, the fourth base material layer 520, the sixth metal layer 530, and the second feed layer 540. In this embodiment, the antenna cavity can be understood as a dielectric cavity surrounded by five conductive surfaces, namely, the fifth metal layer 430, three equivalent electrical walls formed by a row of first metal vias 310, and the sixth metal layer 530.
Referring to FIG. 8, a microstrip feed line 800 is disposed on a side of the second feed layer 540 away from the fourth base material layer 520. The microstrip feed line 800 is connected to the other end of the first feed hole 710. An opening is provided around the connection between the microstrip feed and the first feed hole 710. A size of the opening is determined by matching an input impedance value to form a feeding part of the antenna structure. In this embodiment, the first feed hole 710 and the second feed hole 720 are both metallized via holes.
Please refer to FIG. 6 and FIG. 7. As an embodiment, the first patch portion 200 and the second patch portion 400 in this embodiment are integrally formed. The first base 100 and the second base 500 are integrally formed. That is, the first metal layer 210 is located at the same layer as the fifth metal layer 430 and is integrally formed with the fifth metal layer 430. The first base material layer 220 is located at the same layer as the third base material layer 420 and is integrally formed with the third base material layer 420. The first base material layer 120 is located on the same layer as the fourth base material layer 520 and is integrally formed with the fourth base material layer 520. The fourth metal layer 130 is located at the same layer as the sixth metal layer 530 and is integrally formed with the sixth metal layer 530. The second metal layer is located at the same layer as the seventh metal layer and is integrally formed with the seventh metal layer. The third metal layer is located at the same layer as the eighth metal layer and is integrally formed with the eighth metal layer. The second metal layer and the third metal layer are located in the isolation area and are arranged to be close to and spaced from the first base material layer 220 and the first base material layer 120. Then, the seventh metal layer and the eighth metal layer are bonded in the radiation area. The seventh metal layer is located at the same layer and connected to the first ink layer 410. The eighth metal layer is located at the same layer and connected to the second ink layer 510. Thus, the third base material layer 420 and the fourth base material layer 520 are spaced apart from each other in the radiation area.
Please refer to FIG. 9 and FIG. 10 together. In some embodiments, the first antenna structure 11 may be provided with two isolation areas on both sides of the first radiation area 111. The two isolation areas are respectively a first isolation area 112 and a second isolation area 122, and the structure of the first isolation area 112 is the same as that of the second isolation area 122.
Please refer to FIG. 11, in some embodiments, the antenna apparatus further includes a substrate 1. The substrate 1 includes at least two antenna regions. Each antenna region is formed with a first base 100 and a second base 500 in a corresponding antenna structure. The substrate 1 in this embodiment may be a circuit board. The first base 100 and the second base 500 are integrally arranged and embedded in the circuit board. The first patch portion 200 and the second patch portion 400 are attached to the circuit board to form the antenna structure with the first base 100 and the second base 500. When two antenna structures are spaced apart, the antenna signals radiated between the two antenna structures can be isolated by setting the isolation area in the antenna structure.
The antenna structure in the present application is composed of metalized via holes and the metal layer on the surface of the substrate to form the antenna cavity, and is matched with the branch piece or the metal plate disposed at the other end of the second feed hole 720 to obtain an ideal port impedance characteristic. As shown in FIG. 12, FIG. 12 is a graph showing a standing wave ratio of the antenna apparatus in the present application. When the antenna apparatus operates in a frequency band of 24GHz to 24.15GHz, the port impedance VSWR is less than 1.3.
Please refer to FIG. 13, which is an S-curve diagram of an antenna apparatus in the present application. When isolation areas are set in both the first antenna structure 11 and the second antenna structure 12 on the substrate 1, the isolation degree between the two antenna structures can be as high as -39 dB.
Furthermore, the present application also provides a terminal device accordingly, and the terminal device includes the above-mentioned antenna apparatus. Since the antenna apparatus is described in detail above, it will not be repeated here.
In summary, the present application provides the antenna apparatus and the terminal device. The antenna apparatus includes the first antenna structure including the first radiation area and the first isolation area connected to the first radiation area; and the second antenna structure spaced apart from the first antenna structure. The first isolation area is located between the first radiation area and the second antenna structure, and is configured to isolate the wireless signal radiated by the first radiation area from the wireless signal radiated by the second antenna structure. In the present application, by setting the isolation area in the antenna structure, when two antenna structures are arranged at an interval, the wireless signal radiated by the first radiation area and the wireless signal radiated by the adjacent antenna structure can be isolated by the isolation area set in one of the antenna structures, thereby improving the isolation degree between the antenna structures.
It is understandable that a person skilled in the art can make equivalent substitutions or changes based on the technical solutions of the present application and its application concept, and all these changes or substitutions should fall within the scope of protection of the appending claims of the present application.

Claims

An antenna apparatus, comprising:
a first antenna structure comprising a first radiation area and a first isolation area connected to the first radiation area;

a second antenna structure spaced apart from the first antenna structure;

wherein the first isolation area is located between the first radiation area and the second antenna structure, and is configured to isolate a wireless signal radiated by the first radiation area from a wireless signal radiated by the second antenna structure.
The antenna apparatus according to claim 1, wherein the second antenna structure comprises:
a second radiation area;

a second isolation area connected to the second radiation area, wherein the second isolation area is located between the second radiation area and the first isolation area, and is configured to isolate an antenna signal radiated by the first radiation area from an antenna signal radiated by the second radiation area.
The antenna apparatus according to claim 1 or 2, wherein the first antenna structure further comprises:
a third isolation area connected to the first radiation area, wherein the third isolation area and the first isolation area are located on opposite sides of the first radiation area.
The antenna apparatus according to claim 2, wherein the second antenna structure further comprises:
a fourth isolation area connected to the first radiation area, wherein the fourth isolation area and the second isolation area are located on opposite sides of the second radiation area.
The antenna apparatus according to claim 3, wherein the first isolation area comprises:
a first base;

a first patch portion stacked on the first base;

a first via group comprising at least two rows of first metal vias arranged at intervals;

wherein each of the first metal vias in the first via group extends through the patch portion, and at least a portion of the first metal vias in the first via group extends through the first base and the first patch portion.
The antenna apparatus according to claim 5, wherein the first radiation area comprises:
an antenna cavity comprising a second base, a second patch portion, and a second via group stacked in layers;

wherein a first feed hole is disposed on the second base, the first feed hole extends through the second base in a thickness direction of the base; a second feed hole is disposed on the second patch portion, one end of the second feed hole is connected to one end of the first feed hole, and another end of the second feed hole is located in the second patch portion;

wherein the second via group comprises a plurality of second metal vias, and the plurality of second metal vias all extend through the second base and the second patch portion, and are located at edges of the second base and the second patch portion, surrounding the first feed hole and the second feed hole to form three equivalent electrical walls.
The antenna apparatus according to claim 6, wherein the first patch portion comprises a first metal layer, a first base material layer, and a second metal layer stacked in sequence; the second metal layer is located on a side close to the first base; and
the first base comprises a third metal layer, a second base material layer, a fourth metal layer, and a first feed layer stacked in sequence; the third metal layer is located on a side close to the second metal layer.
The antenna apparatus according to claim 7, wherein the first metal layer and the second metal layer are electrically connected through the first metal via.
The antenna apparatus according to claim 7, wherein the second patch portion comprises a first ink layer, a third base material layer, and a fifth metal layer stacked in layers, and the first ink layer is located on a side close to the second base;
the second base comprises a second ink layer, a fourth base material layer, a sixth metal layer, and a second feed layer stacked in sequence, and the second ink layer is located on a side close to the first ink layer;

a seventh metal layer is disposed on a periphery of the first ink layer; an eighth metal layer is disposed on a periphery of the second ink layer; each of the second metal vias extends through the fifth metal layer, the third base material layer, the seventh metal layer, the eighth metal layer, the fourth base material layer, the sixth metal layer, and the second feed layer.
The antenna apparatus according to claim 9, wherein the first patch portion and the second patch portion are integrally formed.
The antenna apparatus according to claim 9, wherein the antenna apparatus further comprises a substrate, the substrate comprises at least two antenna regions, and each of the antenna regions is formed with the first base and the second base in the corresponding antenna structure.
A terminal device, comprising an antenna apparatus, wherein the antenna apparatus comprises:
a first antenna structure comprising a first radiation area and a first isolation area connected to the first radiation area;

a second antenna structure spaced apart from the first antenna structure;

wherein the first isolation area is located between the first radiation area and the second antenna structure, and is configured to isolate a wireless signal radiated by the first radiation area from a wireless signal radiated by the second antenna structure.
The terminal device according to claim 12, wherein the second antenna structure comprises:
a second radiation area;

a second isolation area connected to the second radiation area, wherein the second isolation area is located between the second radiation area and the first isolation area, and is configured to isolate an antenna signal radiated by the first radiation area from an antenna signal radiated by the second radiation area.
The terminal device according to claim 12 or 13, wherein the first antenna structure further comprises:
a third isolation area connected to the first radiation area, wherein the third isolation area and the first isolation area are located on opposite sides of the first radiation area.
The terminal device according to claim 13, wherein the second antenna structure further comprises:
a fourth isolation area connected to the first radiation area, wherein the fourth isolation area and the second isolation area are located on opposite sides of the second radiation area.
The terminal device according to claim 14, wherein the first isolation area comprises:
a first base;

a first patch portion stacked on the first base;

a first via group comprising at least two rows of first metal vias arranged at intervals;

wherein each of the first metal vias in the first via group extends through the patch portion, and at least a portion of the first metal vias in the first via group extends through the first base and the first patch portion.
The terminal device according to claim 16, wherein the first radiation area comprises:
an antenna cavity comprising a second base, a second patch portion, and a second via group stacked in layers;

wherein a first feed hole is disposed on the second base, the first feed hole extends through the second base in a thickness direction of the base; a second feed hole is disposed on the second patch portion, one end of the second feed hole is connected to one end of the first feed hole, and another end of the second feed hole is located in the second patch portion;

wherein the second via group comprises a plurality of second metal vias, and the plurality of second metal vias all extend through the second base and the second patch portion, and are located at edges of the second base and the second patch portion, surrounding the first feed hole and the second feed hole to form three equivalent electrical walls.
The terminal device according to claim 17, wherein the first patch portion comprises a first metal layer, a first base material layer, and a second metal layer stacked in sequence; the second metal layer is located on a side close to the first base; and
the first base comprises a third metal layer, a second base material layer, a fourth metal layer, and a first feed layer stacked in sequence; the third metal layer is located on a side close to the second metal layer.
The terminal device according to claim 18, wherein the second patch portion comprises a first ink layer, a third base material layer, and a fifth metal layer stacked in layers, and the first ink layer is located on a side close to the second base;
the second base comprises a second ink layer, a fourth base material layer, a sixth metal layer, and a second feed layer stacked in sequence, and the second ink layer is located on a side close to the first ink layer;

a seventh metal layer is disposed on a periphery of the first ink layer; an eighth metal layer is disposed on a periphery of the second ink layer; each of the second metal vias extends through the fifth metal layer, the third base material layer, the seventh metal layer, the eighth metal layer, the fourth base material layer, the sixth metal layer, and the second feed layer.
The terminal device according to claim 19, wherein the antenna apparatus further comprises a substrate, the substrate comprises at least two antenna regions, and each of the antenna regions is formed with the first base and the second base in the corresponding antenna structure.