WO2021120382A1 - Antenna assembly and mobile terminal - Google Patents

Abstract

Disclosed are an antenna assembly and a mobile terminal. The antenna assembly comprises a metal frame body, and at least one breakpoint is arranged in the metal frame body to partition the metal frame body into a plurality of borders; each border is integrated with a plurality of antennas; and the antennas integrated at the metal frame body comprise low-frequency 2×2 MIMO antennas, medium- and high-frequency 4×4 MIMO antennas, Sub-6G band 4×4 MIMO antennas, WiFi 2×2 MIMO antennas and dual-frequency GPS antennas.

Description

Antenna component and mobile terminal

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office with the application number 201911323537.0 and the invention title "antenna assembly and mobile terminal" on December 20, 2019, the entire content of which is incorporated into this application by reference.

Technical field

This application relates to the field of communication technology, and in particular to an antenna assembly and a mobile terminal.

Background technique

Currently, major operators and network manufacturers have begun to deploy 5G networks, and mobile phone manufacturers have begun to release 5G commercial mobile phones. Compared with 4G LTE, the biggest advantage of 5G lies in high speed, low latency and larger connection density, which can bring a series of applications, such as 5G+8K (that is, use 5G communication technology to broadcast live events in HD) ; 5G+VR (that is, the use of 5G communication technology can make VR from wired transmission to wireless transmission); 5G's low-latency advantage makes it possible to land unmanned driving technology; based on 5G telemedicine, doctors can pass high-definition and low-latency Timely transmitted video to remotely guide the operation; 5G can be connected to a larger number of Internet of Things devices. For mobile phones, compared to 4G mobile phones, 5G mobile phones and the current era of full-screen mobile phones greatly increase the complexity of antenna design, which is mainly reflected in the more demanding antenna environment, the increase in the number of antennas, and the greater mutual interference between antennas. Serious, so further optimization is needed.

technical problem

The embodiments of the present application provide an antenna assembly and a mobile terminal, which can cover the frequency bands of global operators, and the antenna performance is good, and the mutual influence between the antennas is small.

Technical solutions

An embodiment of the present application provides an antenna assembly, including a metal frame, and at least one break point is provided in the metal frame to divide the metal frame into a plurality of frames;

Multiple antennas are integrated at each frame, so that the antennas integrated at the metal frame include low-frequency 2×2 MIMO antenna, mid-high frequency 4×4 MIMO antenna, Sub-6G frequency band 4×4 MIMO antenna, WIFI 2×2 MIMO antenna and dual frequency GPS antenna.

In some embodiments, the metal frame includes a lower frame, and three break points are set in the lower frame to divide the lower frame into a first frame, a second frame, and a third frame in sequence; The low frequency 2×2 MIMO antenna includes a low frequency diversity antenna, the medium and high frequency 4×4 MIMO antenna includes a medium and high frequency main antenna, a high frequency MIMO antenna, and an intermediate frequency MIMO antenna. The Sub-6G frequency band 4×4 MIMO antenna includes an n77 frequency band main antenna. Integrated antenna, n77 frequency band diversity antenna, n79 frequency band diversity antenna and n79 frequency band MIMO antenna;

The middle and high frequency main antenna and the n79 frequency band MIMO antenna are integrated at the first frame, the intermediate frequency MIMO antenna and the n77 frequency band main antenna are integrated at the second frame, and the third frame is integrated The low frequency diversity antenna, the high frequency MIMO antenna, the n77 frequency band diversity antenna, and the n79 frequency band diversity antenna.

In some embodiments, an end of the first frame away from the second frame is grounded, and an end of the first frame close to the second frame is connected to a first feed point for generating resonance at mid and high frequencies; The first feed point is also connected with a metal trace, which is used to generate resonance at the n79 frequency band.

In some embodiments, an end of the second frame close to the third frame is connected to a second feed point, and the second feed point is connected to a matching circuit for generating resonance at an intermediate frequency; the second feed point Metal traces are also connected to generate resonance at the n77 frequency band.

In some embodiments, the first end of the third frame close to the second frame is grounded, and a third feed point is connected to the third frame close to the first end, which is used for low frequency and high frequency. Resonance is generated at the third feed point; the third feed point is also connected with a metal trace for generating resonance at the n77 frequency band and the n79 frequency band.

In some embodiments, the metal frame includes an upper frame, and four break points are provided in the upper frame to divide the upper frame into a fourth frame, a fifth frame, and a sixth frame in sequence. , The fifth frame includes a first sub-frame and a second sub-frame that are connected; the low-frequency 2×2 MIMO antenna includes a low-frequency main antenna, and the medium-high frequency 4×4 MIMO antenna includes a medium-high frequency diversity antenna and a medium-high frequency MIMO antenna. Antenna, the Sub-6G band 4×4 MIMO antenna includes n77 band MIMO antenna, n79 band main antenna and n79 band MIMO antenna. WIFI 2×2 MIMO antenna includes first WIFI 2.4G band antenna and second WIFI 2.4G Frequency band antenna, the first WIFI 5G frequency band antenna, and the second WIFI 5G frequency band antenna, the dual-frequency GPS antenna includes a GPS L1 frequency band antenna and a GPS L5 frequency band antenna;

The fourth frame integrates the GPS L5 frequency band antenna, the second WIFI 2.4G frequency band antenna, and the second WIFI 5G frequency band antenna; the first sub frame integrates the GPS L1 frequency band antenna, the The first WIFI 2.4G frequency band antenna and the first WIFI 5G frequency band antenna; the second sub-frame integrates the low frequency main antenna, the medium and high frequency diversity antenna, the n77 frequency band MIMO antenna, and the n79 Frequency band MIMO antenna; the sixth frame integrates the medium and high frequency MIMO antenna, the n77 frequency band MIMO antenna, and the n79 frequency band main antenna.

In some embodiments, an end of the fourth frame close to the fifth frame is grounded, an end of the fourth frame away from the fifth frame is connected to a fourth feed point, and the fourth feed point is also connected to a metal Wiring is used to generate resonance in GPS L5 frequency band, WIFI 2.4G frequency band and WIFI 5G frequency band.

In some embodiments, the connection point of the first sub-frame and the second sub-frame is grounded, the first sub-frame is provided with a fifth feed point, and the fifth feed point is also connected to a metal wire. The line is used to generate resonance in the WIFI 2.4G frequency band and the WIFI 5G frequency band; the fifth feed point is also connected with a matching circuit for generating resonance in the GPS L1 frequency band;

A sixth feed point is provided on the second sub-frame, and the sixth feed point is also connected with a matching circuit for generating resonance at low and mid-high frequencies; the sixth feed point is also connected with a metal trace , Used to generate resonance in the n77 frequency band and the n79 frequency band.

In some embodiments, an end of the sixth frame close to the fifth frame is grounded, and an end of the sixth frame away from the fifth frame is connected to a seventh feed point for generating resonance in the n77 frequency band and the n79 frequency band ; The seventh feed point is also connected with a matching circuit for generating resonance at the mid and high frequency.

An embodiment of the present application also provides a mobile terminal, including an antenna assembly; the antenna assembly includes a metal frame, and at least one break point is provided in the metal frame to divide the metal frame into a plurality of frames ；

Multiple antennas are integrated at each frame, so that the antennas integrated at the metal frame include low-frequency 2×2 MIMO antenna, mid-high frequency 4×4 MIMO antenna, Sub-6G frequency band 4×4 MIMO antenna, WIFI 2×2 MIMO antenna and dual frequency GPS antenna.

In some embodiments, the metal frame includes a lower frame, and three break points are set in the lower frame to divide the lower frame into a first frame, a second frame, and a third frame in sequence; The low frequency 2×2 MIMO antenna includes a low frequency diversity antenna, the medium and high frequency 4×4 MIMO antenna includes a medium and high frequency main antenna, a high frequency MIMO antenna, and an intermediate frequency MIMO antenna. The Sub-6G frequency band 4×4 MIMO antenna includes an n77 frequency band main antenna. Integrated antenna, n77 frequency band diversity antenna, n79 frequency band diversity antenna and n79 frequency band MIMO antenna;

The middle and high frequency main antenna and the n79 frequency band MIMO antenna are integrated at the first frame, the intermediate frequency MIMO antenna and the n77 frequency band main antenna are integrated at the second frame, and the third frame is integrated The low frequency diversity antenna, the high frequency MIMO antenna, the n77 frequency band diversity antenna, and the n79 frequency band diversity antenna.

In some embodiments, an end of the first frame away from the second frame is grounded, and an end of the first frame close to the second frame is connected to a first feed point for generating resonance at mid and high frequencies; The first feed point is also connected with a metal trace, which is used to generate resonance at the n79 frequency band.

In some embodiments, an end of the second frame close to the third frame is connected to a second feed point, and the second feed point is connected to a matching circuit for generating resonance at an intermediate frequency; the second feed point Metal traces are also connected to generate resonance at the n77 frequency band.

In some embodiments, the first end of the third frame close to the second frame is grounded, and a third feed point is connected to the third frame close to the first end, which is used for low frequency and high frequency. Resonance is generated at the third feed point; the third feed point is also connected with a metal trace for generating resonance at the n77 frequency band and the n79 frequency band.

In some embodiments, the metal frame includes an upper frame, and four break points are provided in the upper frame to divide the upper frame into a fourth frame, a fifth frame, and a sixth frame in sequence. , The fifth frame includes a first sub-frame and a second sub-frame that are connected; the low-frequency 2×2 MIMO antenna includes a low-frequency main antenna, and the medium-high frequency 4×4 MIMO antenna includes a medium-high frequency diversity antenna and a medium-high frequency MIMO antenna. Antenna, the Sub-6G band 4×4 MIMO antenna includes n77 band MIMO antenna, n79 band main antenna and n79 band MIMO antenna. WIFI 2×2 MIMO antenna includes first WIFI 2.4G band antenna and second WIFI 2.4 G-band antenna, the first WIFI 5G band antenna, and the second WIFI 5G band antenna, the dual-frequency GPS antenna includes a GPS L1 band antenna and a GPS L5 band antenna;

The fourth frame integrates the GPS L5 frequency band antenna, the second WIFI 2.4G frequency band antenna, and the second WIFI 5G frequency band antenna; the first sub frame integrates the GPS L1 frequency band antenna, the The first WIFI 2.4G frequency band antenna and the first WIFI 5G frequency band antenna; the second sub-frame integrates the low frequency main antenna, the medium and high frequency diversity antenna, the n77 frequency band MIMO antenna, and the n79 Frequency band MIMO antenna; the sixth frame integrates the medium and high frequency MIMO antenna, the n77 frequency band MIMO antenna, and the n79 frequency band main antenna.

In some embodiments, an end of the fourth frame close to the fifth frame is grounded, an end of the fourth frame away from the fifth frame is connected to a fourth feed point, and the fourth feed point is also connected to metal Wiring is used to generate resonance in GPS L5 frequency band, WIFI 2.4G frequency band and WIFI 5G frequency band.

In some embodiments, the connection point of the first sub-frame and the second sub-frame is grounded, the first sub-frame is provided with a fifth feed point, and the fifth feed point is also connected to a metal wire. The line is used to generate resonance in the WIFI 2.4G frequency band and the WIFI 5G frequency band; the fifth feed point is also connected with a matching circuit for generating resonance in the GPS L1 frequency band;

A sixth feed point is provided on the second sub-frame, and the sixth feed point is also connected with a matching circuit for generating resonance at low and mid-high frequencies; the sixth feed point is also connected with a metal trace , Used to generate resonance in the n77 frequency band and the n79 frequency band.

In some embodiments, an end of the sixth frame close to the fifth frame is grounded, and an end of the sixth frame away from the fifth frame is connected to a seventh feed point for generating resonance in the n77 frequency band and the n79 frequency band ; The seventh feed point is also connected with a matching circuit for generating resonance at the mid and high frequency.

Beneficial effect

The antenna assembly and mobile terminal provided by the present application can divide the metal frame into multiple frames through at least one break point, and integrate multiple antennas at each frame, so that the antenna integrated at the metal frame includes low-frequency 2×2 MIMO Antennas, medium and high frequency 4×4MIMO antennas, Sub-6G frequency band 4×4MIMO antennas, WIFI 2×2MIMO antennas and dual-frequency GPS antennas to cover the frequency bands of global operators, and the antenna performance is good, and the mutual influence between the antennas is small.

Description of the drawings

The following detailed description of specific implementations of the present application in conjunction with the accompanying drawings will make the technical solutions and other beneficial effects of the present application obvious.

FIG. 1 is a schematic structural diagram of an antenna assembly provided by an embodiment of the application.

FIG. 2 is a schematic diagram of the structure at the lower frame of the antenna assembly provided by an embodiment of the application.

FIG. 3 is a schematic diagram of the structure at the upper frame of the antenna assembly provided by an embodiment of the application.

Fig. 4 is a schematic structural diagram of a mobile terminal provided by an embodiment of the application.

Embodiments of the present invention

The specific structure and functional details disclosed herein are only representative, and are used for the purpose of describing exemplary embodiments of the present application. However, this application can be implemented in many alternative forms, and should not be construed as being limited only to the embodiments set forth herein.

In the description of this application, it should be understood that the terms "center", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", The orientation or positional relationship indicated by "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the application and simplifying the description, rather than indicating or implying the pointed device Or the element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of these features. In the description of this application, unless otherwise specified, "plurality" means two or more. In addition, the term "including" and any variations thereof is intended to cover non-exclusive inclusion.

In the description of this application, it should be noted that the terms "installation", "connection", and "connection" should be understood in a broad sense, unless otherwise clearly specified and limited. For example, it can be a fixed connection or a detachable connection. Connected or integrally connected; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood under specific circumstances.

The terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments. Unless the context clearly dictates otherwise, the singular forms "a" and "one" used herein are also intended to include the plural. It should also be understood that the terms "including" and/or "comprising" used herein specify the existence of the stated features, integers, steps, operations, units and/or components, and do not exclude the existence or addition of one or more Other features, integers, steps, operations, units, components, and/or combinations thereof.

The application will be further described below in conjunction with the drawings and embodiments.

As shown in FIG. 1, FIG. 1 is a schematic structural diagram of an antenna assembly provided by an embodiment of the present application. The antenna assembly may include a metal frame 10, and at least one break point 21 is provided in the metal frame 10 to connect the The metal frame 10 is divided into multiple frames; multiple antennas are integrated at each frame, so that the antenna integrated at the metal frame includes a low-frequency 2×2 MIMO (Multiple-Input Multiple-Output) antenna, a mid-high Frequency 4×4MIMO antenna, Sub-6G frequency band 4×4MIMO antenna, WIFI 2×2MIMO antenna and dual-frequency GPS antenna.

The 2×2MIMO antenna indicates that there are two antennas, which are the main antenna and the diversity antenna. The 4×4 MIMO antenna indicates that there are four antennas, namely, a main antenna, a diversity antenna, and two MIMO antennas. The Sub-6G frequency band refers to the frequency band of 3 GHz to 5 GHz. The Sub-6G frequency band in the embodiment of the present application includes the n77 frequency band and the n79 frequency band.

The low-frequency 2×2 MIMO antenna includes a low-frequency diversity antenna and a low-frequency main antenna, and the medium-high frequency 4×4 MIMO antenna includes a medium-high frequency main antenna, a high-frequency MIMO antenna, a medium-frequency MIMO antenna, a medium-high-frequency diversity antenna, and a medium-high-frequency MIMO antenna The Sub-6G frequency band 4×4 MIMO antenna includes n77 frequency band main antenna, n77 frequency diversity antenna, n79 frequency diversity antenna, n79 frequency MIMO antenna, n77 frequency MIMO antenna, n79 frequency main antenna and n79 frequency MIMO antenna, WIFI The 2×2MIMO antenna includes the first WIFI 2.4G band antenna, the second WIFI 2.4G band antenna, the first WIFI 5G band antenna, and the second WIFI 5G band antenna. The dual-frequency GPS antenna includes a GPS L1 band antenna And GPS L5 band antenna. Specifically, the frequency range of each antenna is shown in Table 1.

Frequency band

Frequency Range

Low frequency	699-960MHz
IF	1710-2200MHz
high frequency	2300-2690MHz
Sub-6G frequency band	n77 (3.3-4.2GHz) and n79 (4.4-5.0GHz)
Wi-Fi 2.4G/Bluetooth	2400-2500MHz
WIFI 5G	5150-5850MHz
GPS L1	1575MHz
GPS L5	1176MHz

Table 1

The antenna assembly in the embodiment of this application also supports 2/3/4/5G, and the specific supported frequency bands are shown in Table 2.

Communication system	Frequency band
2G/3G	slightly
4G	B1/3/5/7/8/20/28/32/34/38/39/40/41
5G	n41/77/78/79

Table 2

The antenna assembly in the embodiment of the present application can be applied to a mobile terminal, that is, the metal frame body 10 can be a metal frame of the mobile terminal, and the mobile terminal can be a full-screen mobile phone with a 1.5 mm headroom.

Specifically, as shown in FIG. 1, the metal frame 10 includes a lower frame, and the bottom antenna of the mobile terminal can be integrated at the lower frame. For example, the bottom clearance of the mobile terminal is 1.5mm, and three break points 21 are set in the lower frame to divide the lower frame into a first frame, a second frame, and a third frame. The first frame is integrated Multiple antennas form an integrated antenna A1, multiple antennas are integrated at the second frame to form an integrated antenna A2, and multiple antennas are integrated at the third frame to form an integrated antenna A3.

As shown in Fig. 2, the integrated antenna A1 includes the medium and high frequency main antenna and the n79 frequency band MIMO antenna. The integrated antenna A1 includes a first frame 101, one end of the first frame 101 away from the integrated antenna A2 is grounded, and one end of the first frame 101 close to the integrated antenna A2 is connected to a first feed point B1, and a loop antenna ( The form of a loop antenna produces resonance at medium and high frequencies. The first feed point B1 is also connected to a metal trace 102, which is a laser-engraved trace located inside the metal frame body 10, which generates resonance at the n79 frequency band by coupling with the ground. The integrated antenna A1 does not use a matching circuit. For the free space efficiency of the A1 antenna, the medium and high frequency main antenna is -7.3dB, and the n79 band MIMO antenna is -7.5dB. In some embodiments, the first frame 101 may be located at the lower left corner of the metal frame 10 in the mobile terminal.

As shown in Figure 2, the integrated antenna A2 includes the intermediate frequency MIMO antenna and the n77 frequency band main antenna. The integrated antenna A2 includes a second frame 201. One end of the second frame 201 close to the integrated antenna A3 is connected to a second feed point B2, and resonance is generated at the intermediate frequency in the form of a monopole antenna (monopole antenna). Point B2 is connected to a matching circuit (not shown in the figure) to cooperate with the Monopole antenna to generate resonance at the intermediate frequency. Among them, the matching circuit is a circuit that starts from the second feed point B2, first connects a 3.6nH inductor in parallel, and then connects a 0.75pF capacitor in series. The second feed point B2 is also connected with a metal trace 202, which is a laser-engraved trace located inside the metal frame 10, and is used to generate resonance at the n77 frequency band. For the free space efficiency of the integrated antenna A2, the intermediate frequency MIMO antenna is -8.7dB, and the n77 frequency band main antenna is -7.4dB.

As shown in FIG. 2, the integrated antenna A3 includes the low-frequency diversity antenna, the high-frequency MIMO antenna, the n77 frequency band diversity antenna, and the n79 frequency band diversity antenna. The integrated antenna A3 includes a third frame 301, the third frame 301 is grounded close to the first end of the integrated antenna A2, and a third feed point B3 is connected to the third frame 301 close to the first end to The form of the IFA antenna (Inverted F Antenna) produces resonance at low and high frequencies. The third feed point B3 is also connected to a metal trace 302, which is a laser-engraved trace located inside the metal frame 10, and is coupled to the ground to generate resonance at the n77 frequency band and the n79 frequency band. The integrated antenna A3 does not use a matching circuit.

It should be noted that there is an antenna switch C1 on the integrated antenna A3, and the antenna switch C1 can be connected in parallel with different inductors (not shown in the figure) to the ground to switch different low frequency bands, thereby achieving full coverage of 699-960MHz. In some embodiments, the third frame 301 may be located at the lower right corner of the metal frame 10 of the mobile terminal, and the end of the third frame 301 away from the integrated antenna A2 is 45 mm away from the bottom of the mobile terminal, so that the end may be located at the user’s ring finger and Between the little fingers, that is, the end is not blocked by the user's hand, which is beneficial to improve the low-frequency head-hand performance. For the free space efficiency of the integrated antenna A3, the peak value of the low-frequency diversity antenna is -7dB, the high-frequency MIMO antenna is -9.3dB, the n77 frequency band diversity antenna is -8.1dB, and the n79 frequency band diversity antenna is -6.4dB.

Further, as shown in FIG. 1, the metal frame body 10 further includes an upper frame body, and four break points 21 are provided in the upper frame body to divide the upper frame body 30 into a fourth frame and a fifth frame in sequence. A frame and a sixth frame, and the fifth frame includes a first sub-frame and a second sub-frame connected to each other. Multiple antennas are integrated at the fourth frame to form integrated antenna A4, multiple antennas are integrated at the first sub-frame to form integrated antenna A5, multiple antennas are integrated at the second sub-frame to form integrated antenna A6, and multiple antennas are integrated at the sixth frame. Two antennas form an integrated antenna A7.

As shown in FIG. 3, the integrated antenna A4 includes the GPS L5 frequency band antenna, the second WIFI 2.4G frequency band antenna, and the second WIFI 5G frequency band antenna. The form of the integrated antenna A4 is more complicated, and is generally regarded as an IFA antenna. The integrated antenna A4 includes a fourth frame 401, one end of the fourth frame 401 close to the integrated antenna A5 is grounded, an end of the fourth frame 401 away from the integrated antenna A5 is connected to the fourth feed point B4, and the fourth frame 401 is connected to the fourth feed point B4. The feed point B4 is also connected with metal traces 402 and 403, which are laser-engraved traces located inside the metal frame body 10, which resonate in the GPS L5 frequency band (1176MHz) in the form of an IFA antenna. The fourth feed point B4 is also connected to metal traces 404, 405, and 406. The metal traces 404, 405, and 406 are laser-engraved traces located inside the metal frame 10, which are in the form of an IFA antenna in the WIFI 2.4G frequency band. The integrated antenna A4 naturally resonates in the WIFI 5G frequency band.

The fourth feed point B4 is also connected to a matching circuit (not shown in the figure). The matching circuit is a circuit with a 3.6nH inductor in parallel starting from the fourth feed point B4. The resonance deepens. For the free space efficiency of the integrated antenna A4, the GPS L5 band antenna is -5.8dB, the second WIFI 2.4G band antenna is -6.5dB, and the second WIFI 5G band antenna is -6.8dB.

As shown in Fig. 3, the integrated antenna A5 includes the GPS L1 frequency band antenna, the first WIFI 2.4G frequency band antenna, and the first WIFI 5G frequency band antenna. The integrated antenna A5 includes a first sub-frame 501, the connection point of the first sub-frame 501 and the integrated antenna A6 is grounded, the first sub-frame 501 is provided with a fifth feed point B5, which is in the form of an IFA antenna Resonance occurs in the GPS L1 frequency band. The fifth feed point B5 is also connected to a matching circuit (not shown in the figure). The matching circuit starts from the fifth feed point B5. First, a 3.9pF capacitor is connected in series, and then a 3.9nH inductor is connected in parallel. The function of the matching circuit is Cooperate with the first sub-frame 501 to generate resonance at the GPS L1 frequency band. The fifth feed point B5 is also connected to a metal trace 502, which is a laser-engraved trace located inside the metal frame 10, in the form of an IFA antenna in the WIFI 2.4G frequency band, and the integrated antenna A5 is naturally in the WIFI Resonance occurs at the 5G frequency band. For the free space efficiency of the integrated antenna A5, the GPS L1 band antenna is -6dB, the first Wi-Fi 2.4G band antenna is -7.4dB, and the first Wi-Fi 5G band antenna is -5.3dB.

As shown in FIG. 3, the integrated antenna A6 includes the low frequency main antenna, the medium and high frequency diversity antenna, the n77 frequency band MIMO antenna, and the n79 frequency band MIMO antenna. The integrated antenna A6 includes second sub-frames 601 and 602, a sixth feed point B6 is provided at the connection point of the 601 and 602, and the second sub-frame 601 resonates at low frequencies in the form of a loop antenna. The second sub-frame 602 resonates at mid and high frequencies. The sixth feed point B6 is also connected to a matching circuit (not shown in the figure). The matching circuit is a circuit with a 1pF capacitor connected in series starting from the sixth feed point B6. The matching circuit is used to produce resonance at low frequencies. . The sixth feed point B6 is also connected to a metal trace 603, which is a laser-engraved trace located inside the metal frame 10, and is coupled to the ground to generate resonance at the n77 frequency band and the n79 frequency band.

The integrated antenna A6 is also equipped with an antenna switch C2, which switches different low frequency bands by paralleling different inductances to the ground, so as to achieve full coverage of 699-960MHz. For the free space efficiency of the integrated antenna A6, the peak value of the low-frequency main antenna is -5.5dB, the medium and high frequency diversity antenna is -8.6dB, the n77 band MIMO antenna is -8dB, and the n79 band MIMO antenna is -4.2dB.

As shown in FIG. 3, the integrated antenna A7 includes the medium and high frequency MIMO antenna, the n77 frequency band MIMO antenna, and the n79 frequency band main antenna. The integrated antenna A7 includes a sixth frame 701, one end of the sixth frame 701 close to the integrated antenna A6 is grounded, and the end of the sixth frame 701 away from the integrated antenna A6 is connected to the seventh feed point B7 to pass the loop antenna The form resonates in the n77 frequency band and the n79 frequency band. The seventh feed point B7 is also connected to a matching circuit (not shown in the figure). The matching circuit starts from the seventh feed point B7, first in series with a 0.75pF capacitor, and then in parallel with a 3.6nH inductor. The function of the matching circuit is Resonance occurs at medium and high frequencies. For the free space efficiency of the integrated antenna A7, the medium and high frequency MIMO antenna is -8dB, the n77 frequency band MIMO antenna is -9.6dB, and the n79 frequency band main antenna is -5.7dB.

After testing, the isolation between the integrated antenna A4 and A5 is -14dB at the worst; the isolation between the integrated antenna A4 and A6 is -24dB at the worst; the isolation between the integrated antenna A4 and A7 is at the worst -23dB ; The worst is the isolation between the integrated antenna A5 and A6 is -20dB; the worst is the isolation between the integrated antenna A5 and A7 is -23dB; the worst is the isolation between the integrated antenna A6 and A7 is -15dB. Therefore, the worst isolation between the antennas integrated at the upper frame 30 is -14dB, and the isolation performance between the antennas is better.

It can be seen from Table 3 that the low-frequency 2×2MIMO performance is better, and the main antenna performance of the middle and high frequency needs to be optimized. However, the overall 4×4MIMO performance is better. The average efficiency of 4×4MIMO in the n77 and n79 bands is -7.1dB , The performance is better under such a large bandwidth, and the performance of Wi-Fi and GPS is better.

table 3

The antenna assembly provided by the present application can divide the metal frame into multiple frames through at least one break point, and integrate multiple antennas at each frame, so that the antenna integrated at the metal frame includes low-frequency 2×2 MIMO antennas, medium-high Frequency 4×4MIMO antenna, Sub-6G frequency band 4×4MIMO antenna, WIFI 2×2MIMO antenna and dual-frequency GPS antenna to cover the frequency bands of global operators, and the antenna performance is good, and the mutual influence between the antennas is small.

An embodiment of the present application also provides a mobile terminal. As shown in FIG. 4, the mobile terminal includes the antenna assembly 40 in the foregoing embodiment, which is not described in detail here.

The mobile terminal further includes a speaker 41, a USB interface 42, a motor 43, an earphone jack 44, an earpiece 45, and a front camera 46. Specifically, the speaker 41 is arranged at the integrated antenna A1 to output audio; the USB interface 42 is arranged at the integrated antenna A2 to connect to external devices; the motor 43 is arranged at the integrated antenna A3 to make the mobile terminal vibrate; The earphone hole 44 is arranged between the integrated antenna A5 and the integrated antenna A6, and is used to connect earphones to output audio through the earphone; the earpiece 45 is arranged at the integrated antenna A6 for receiving audio; the front camera 46 is arranged at the integrated antenna A6 , Used to capture images. Those skilled in the art can understand that the structure of the mobile terminal shown in FIG. 4 does not constitute a limitation on the mobile terminal, and may include more components than shown in the figure, or combine some components, or arrange different components.

The mobile terminal provided by this application can divide the metal frame into multiple frames through at least one breakpoint, and integrate multiple antennas at each frame, so that the antennas integrated at the metal frame include low-frequency 2×2 MIMO antennas, mid-high Frequency 4×4MIMO antenna, Sub-6G frequency band 4×4MIMO antenna, WIFI 2×2MIMO antenna and dual-frequency GPS antenna to cover the frequency bands of global operators, and the antenna performance is good, and the mutual influence between the antennas is small.

In summary, although this application has been disclosed as above in preferred embodiments, the above preferred embodiments are not intended to limit the application. Those of ordinary skill in the art can make various modifications without departing from the spirit and scope of the application. Therefore, the protection scope of this application is subject to the scope defined by the claims.

Claims (18)

1. An antenna assembly, characterized by comprising a metal frame, at least one break point is provided in the metal frame to divide the metal frame into a plurality of frames;

   Multiple antennas are integrated at each frame, so that the antennas integrated at the metal frame include a low-frequency 2×2 MIMO antenna, a medium-high frequency 4×4 MIMO antenna, a Sub-6G frequency band 4×4 MIMO antenna, and a WIFI 2×2 MIMO antenna And dual-frequency GPS antenna.
2. The antenna assembly according to claim 1, wherein the metal frame body comprises a lower frame body, and three break points are provided in the lower frame body to divide the lower frame body into a first frame, The second frame and the third frame; the low-frequency 2×2 MIMO antenna includes a low-frequency diversity antenna, and the medium-high frequency 4×4 MIMO antenna includes a medium-high frequency main antenna, a high-frequency MIMO antenna, and an intermediate-frequency MIMO antenna. The Sub-6G Frequency band 4×4 MIMO antenna includes n77 frequency band main antenna, n77 frequency band diversity antenna, n79 frequency band diversity antenna and n79 frequency band MIMO antenna;

   The middle and high frequency main antenna and the n79 frequency band MIMO antenna are integrated at the first frame, the intermediate frequency MIMO antenna and the n77 frequency band main antenna are integrated at the second frame, and the third frame is integrated The low frequency diversity antenna, the high frequency MIMO antenna, the n77 frequency band diversity antenna, and the n79 frequency band diversity antenna.
3. The antenna assembly according to claim 2, wherein an end of the first frame away from the second frame is grounded, and an end of the first frame close to the second frame is connected to a first feed point for Resonance is generated at the mid and high frequency; the first feed point is also connected with a metal trace to generate resonance at the n79 frequency band.
4. The antenna assembly according to claim 2, wherein an end of the second frame close to the third frame is connected to a second feed point, and the second feed point is connected to a matching circuit for generating at an intermediate frequency Resonance; the second feed point is also connected to a metal trace for resonance at the n77 frequency band.
5. The antenna assembly according to claim 2, wherein the first end of the third frame close to the second frame is grounded, and a third feed point is connected to the third frame close to the first end , Used to generate resonance at low and high frequencies; the third feed point is also connected with a metal trace, used to generate resonance at the n77 frequency band and the n79 frequency band.
6. The antenna assembly according to claim 1, wherein the metal frame body comprises an upper frame body, and four break points are provided in the upper frame body to divide the upper frame body into a fourth frame in turn A fifth frame and a sixth frame, the fifth frame includes a first sub-frame and a second sub-frame that are connected; the low-frequency 2×2 MIMO antenna includes a low-frequency main antenna, and the mid- and high-frequency 4×4 MIMO antenna Including medium and high frequency diversity antenna and medium and high frequency MIMO antenna. The Sub-6G band 4×4 MIMO antenna includes n77 band MIMO antenna, n79 band main antenna and n79 band MIMO antenna. WIFI 2×2 MIMO antenna includes the first WIFI 2.4G band antenna, second WIFI 2.4G band antenna, first WIFI 5G band antenna, and second WIFI 5G band antenna, the dual-frequency GPS antenna includes GPS L1 band antenna and GPS L5 band antenna;

   The fourth frame integrates the GPS L5 frequency band antenna, the second WIFI 2.4G frequency band antenna, and the second WIFI 5G frequency band antenna; the first sub frame integrates the GPS L1 frequency band antenna, the The first WIFI 2.4G frequency band antenna and the first WIFI 5G frequency band antenna; the second sub-frame integrates the low frequency main antenna, the medium and high frequency diversity antenna, the n77 frequency band MIMO antenna, and the n79 Frequency band MIMO antenna; The sixth frame integrates the medium and high frequency MIMO antenna, the n77 frequency band MIMO antenna, and the n79 frequency band main antenna.
7. The antenna assembly of claim 6, wherein an end of the fourth frame close to the fifth frame is grounded, and an end of the fourth frame away from the fifth frame is connected to a fourth feed point, and The fourth feed point is also connected with a metal trace to generate resonance in the GPS L5 frequency band, WIFI 2.4G frequency band, and WIFI 5G frequency band.
8. The antenna assembly according to claim 6, wherein the connection point of the first sub-frame and the second sub-frame is grounded, a fifth feed point is provided on the first sub-frame, and the first sub-frame is The five feed points are also connected with metal wires to generate resonance at the WIFI 2.4G frequency band and the WIFI 5G frequency band; the fifth feed point is also connected with a matching circuit for resonance at the GPS L1 frequency band;

   A sixth feed point is provided on the second sub-frame, and the sixth feed point is also connected with a matching circuit for generating resonance at low and medium and high frequencies; the sixth feed point is also connected with a metal trace , Used to generate resonance in the n77 frequency band and the n79 frequency band.
9. The antenna assembly according to claim 6, wherein an end of the sixth frame close to the fifth frame is grounded, and an end of the sixth frame away from the fifth frame is connected to a seventh feed point for Resonance is generated in the n77 frequency band and the n79 frequency band; the seventh feed point is also connected with a matching circuit for generating resonance in the middle and high frequencies.
10. A mobile terminal, characterized by comprising an antenna assembly; the antenna assembly includes a metal frame, and at least one break point is provided in the metal frame to divide the metal frame into a plurality of frames;

    Multiple antennas are integrated at each frame, so that the antennas integrated at the metal frame include a low-frequency 2×2 MIMO antenna, a medium-high frequency 4×4 MIMO antenna, a Sub-6G frequency band 4×4 MIMO antenna, and a WIFI 2×2 MIMO antenna And dual-frequency GPS antenna.
11. The mobile terminal according to claim 10, wherein the metal frame includes a lower frame, and three break points are provided in the lower frame to divide the lower frame into a first frame, The second frame and the third frame; the low-frequency 2×2 MIMO antenna includes a low-frequency diversity antenna, and the medium-high frequency 4×4 MIMO antenna includes a medium-high frequency main antenna, a high-frequency MIMO antenna, and an intermediate-frequency MIMO antenna. The Sub-6G Frequency band 4×4 MIMO antenna includes n77 frequency band main antenna, n77 frequency band diversity antenna, n79 frequency band diversity antenna and n79 frequency band MIMO antenna;

    The middle and high frequency main antenna and the n79 frequency band MIMO antenna are integrated at the first frame, the intermediate frequency MIMO antenna and the n77 frequency band main antenna are integrated at the second frame, and the third frame is integrated The low frequency diversity antenna, the high frequency MIMO antenna, the n77 frequency band diversity antenna, and the n79 frequency band diversity antenna.
12. The mobile terminal according to claim 11, wherein an end of the first frame away from the second frame is grounded, and an end of the first frame close to the second frame is connected to a first feed point for Resonance is generated at the mid and high frequency; the first feed point is also connected with a metal trace to generate resonance at the n79 frequency band.
13. The mobile terminal according to claim 11, wherein an end of the second frame close to the third frame is connected to a second feed point, and the second feed point is connected to a matching circuit for generating at an intermediate frequency. Resonance; the second feed point is also connected to a metal trace for resonance at the n77 frequency band.
14. The mobile terminal according to claim 11, wherein the first end of the third frame close to the second frame is grounded, and a third feed point is connected to the third frame close to the first end , Used to generate resonance at low and high frequencies; the third feed point is also connected with a metal trace, used to generate resonance at the n77 frequency band and the n79 frequency band.
15. The mobile terminal according to claim 10, wherein the metal frame body comprises an upper frame body, and four break points are provided in the upper frame body to divide the upper frame body into a fourth frame in sequence A fifth frame and a sixth frame, the fifth frame includes a first sub-frame and a second sub-frame that are connected; the low-frequency 2×2 MIMO antenna includes a low-frequency main antenna, and the mid- and high-frequency 4×4 MIMO antenna Including medium and high frequency diversity antennas and medium and high frequency MIMO antennas. The Sub-6G frequency band 4×4 MIMO antenna includes n77 frequency band MIMO antenna, n79 frequency band main antenna and n79 frequency band MIMO antenna. WIFI 2×2 MIMO antenna includes the first WIFI 2.4G band antenna, second WIFI 2.4G band antenna, first WIFI 5G band antenna, and second WIFI 5G band antenna, the dual-frequency GPS antenna includes GPS L1 band antenna and GPS L5 band antenna;

    The fourth frame integrates the GPS L5 frequency band antenna, the second WIFI 2.4G frequency band antenna, and the second WIFI 5G frequency band antenna; the first sub frame integrates the GPS L1 frequency band antenna, the The first WIFI 2.4G frequency band antenna and the first WIFI 5G frequency band antenna; the second sub-frame integrates the low frequency main antenna, the medium and high frequency diversity antenna, the n77 frequency band MIMO antenna, and the n79 Frequency band MIMO antenna; the sixth frame integrates the medium and high frequency MIMO antenna, the n77 frequency band MIMO antenna, and the n79 frequency band main antenna.
16. The mobile terminal according to claim 15, wherein an end of the fourth frame close to the fifth frame is grounded, and an end of the fourth frame away from the fifth frame is connected to a fourth feed point, and The fourth feed point is also connected with a metal trace to generate resonance in the GPS L5 frequency band, WIFI 2.4G frequency band, and WIFI 5G frequency band.
17. The mobile terminal according to claim 15, wherein the connection point of the first sub-frame and the second sub-frame is grounded, a fifth feed point is provided on the first sub-frame, and the first sub-frame is The five feed points are also connected with metal wires to generate resonance at the WIFI 2.4G frequency band and the WIFI 5G frequency band; the fifth feed point is also connected with a matching circuit for resonance at the GPS L1 frequency band;

    A sixth feed point is provided on the second sub-frame, and the sixth feed point is also connected with a matching circuit for generating resonance at low and medium and high frequencies; the sixth feed point is also connected with a metal trace , Used to generate resonance in the n77 frequency band and the n79 frequency band.
18. The mobile terminal according to claim 15, wherein an end of the sixth frame close to the fifth frame is grounded, and an end of the sixth frame away from the fifth frame is connected to a seventh feed point for Resonance is generated in the n77 frequency band and the n79 frequency band; the seventh feed point is also connected with a matching circuit for generating resonance in the middle and high frequencies.

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