CN113991288A

CN113991288A - Antenna assembly, middle frame assembly and electronic device

Info

Publication number: CN113991288A
Application number: CN202111221280.5A
Authority: CN
Inventors: 罗智杰
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-10-20
Filing date: 2021-10-20
Publication date: 2022-01-28

Abstract

The application discloses antenna module, center subassembly and electron device relates to communication technology field. In the antenna assembly, a first feeding point, a second grounding point and a first grounding point are sequentially arranged in the direction from a first end to a second end of a first radiator, the first grounding point is electrically connected with a first tuning control circuit, the second grounding point is electrically connected with a second tuning control circuit, the first tuning control circuit and the second tuning control circuit are used for grounding, a base film working from the second end to the first feeding point of the first radiator generates a first resonance mode supporting a first frequency band, the first frequency band is a low frequency band, and the first tuning control circuit is used for tuning the first resonance mode so as to change the bandwidth of the first frequency band and improve the antenna performance of the antenna assembly.

Description

Antenna assembly, middle frame assembly and electronic device

Technical Field

The application relates to the technical field of communication, in particular to an antenna assembly, a middle frame assembly and an electronic device.

Background

With the development of technology, electronic devices such as mobile phones and the like with communication functions have higher popularity and higher functions. Antenna assemblies are often included in electronic devices to implement communication functions of the electronic devices. However, the antenna assembly in the electronic device in the related art has not good enough communication performance, and there is room for improvement.

Disclosure of Invention

The technical problem that this application will be solved provides an antenna module, includes:

a first radiator having a first end and a second end, the first radiator having a first feeding point disposed between the first end and the second end to be electrically connected to a first feeding source, the first radiator having a first grounding point disposed between the second end and the first feeding point, the first grounding point being electrically connected to a first tuning control circuit, the first tuning control circuit being configured to be grounded, the first radiator having a second grounding point disposed between the first grounding point and the first feeding point, the second grounding point being electrically connected to a second tuning control circuit, the second tuning control circuit being configured to be grounded, a base film of the first radiator operating from the second end to the first feeding point generating a first resonance mode, the first resonance mode supporting a first frequency band, the first frequency band being a low frequency band, the first tuning control circuit is configured to tune the first resonant mode to change a bandwidth of the first frequency band.

In order to solve the technical problems, the technical scheme is as follows: an intermediate frame assembly provided with the antenna assembly described above, the intermediate frame assembly comprising:

the substrate is provided with a ground plane and a feed source, the first grounding point and the second grounding point are both electrically connected with the ground plane, and the first feed point is electrically connected with the feed source; and

the frame is arranged around the substrate in a surrounding mode, and the first radiating body is arranged on the frame.

In order to solve the technical problems, the technical scheme is as follows: an electronic device, a center assembly, provided with an antenna assembly, the antenna assembly comprising:

the middle frame assembly as described above;

the display screen is arranged on one side of the middle frame component; and

and the rear cover is arranged on the other side of the middle frame assembly to form an accommodating cavity with the middle frame assembly.

Adopt this application technical scheme, the beneficial effect who has does: the antenna assembly in this application provides the excitation signal through first feed source for first antenna produces first resonance mode at the second end to the basement membrane of first feed point, and first resonance mode supports the first frequency channel in the low frequency channel, and then can change the bandwidth of first frequency channel in the in-process of first resonance mode of first tuning control circuit tuning, makes first resonance mode support a plurality of different first frequency channels, with the antenna performance that improves antenna assembly.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic diagram of an antenna assembly according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of the first radiator in fig. 1;

fig. 3 is a schematic structural diagram of the second radiator in fig. 1;

FIG. 4 is a graph of a resonant current profile for a first resonant mode in the antenna assembly;

FIG. 5 is a graph of a resonant current profile for a second resonant mode in the antenna assembly;

FIG. 6 is a graph of a resonant current profile for a third resonant mode in the antenna assembly;

FIG. 7 is a graph of return loss for three resonant modes in the antenna assembly shown in FIGS. 4, 5 and 6;

FIG. 8 is a graph of the dynamically adjusted return loss for the three resonant modes in the antenna assembly of FIG. 7;

FIG. 9 is a graph of a resonant current profile for a fourth resonant mode in the antenna assembly;

FIG. 10 is a graph of a resonance current profile for a fifth resonance mode in the antenna assembly;

FIG. 11 is a graph of a resonant current profile for a sixth resonant mode in the antenna assembly;

FIG. 12 is a graph of return loss for three resonant modes in the antenna assembly shown in FIGS. 9, 10 and 11;

FIG. 13 is a graph of dynamically adjusted return loss for the three resonant modes in the antenna assembly of FIG. 12;

fig. 14 is a schematic structural diagram of an electronic device according to an embodiment of the present application;

fig. 15 is a schematic structural view of the antenna assembly of the embodiment shown in fig. 14 mounted on a center frame assembly.

Detailed Description

The present application will be described in further detail with reference to the accompanying drawings and embodiments. In particular, the following embodiments are merely illustrative of the present application, and do not limit the scope of the present application. Likewise, the following embodiments are only some embodiments of the present application, not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present application.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

The present application provides an antenna assembly. The antenna assembly can be applied to electronic equipment. The antenna assembly can realize the multimode switching of low frequency bands and also can realize the multimode switching of medium and high frequency bands. In addition, the antenna assembly can also increase the bandwidth of the middle frequency band, so that the antenna assembly supports Carrier Aggregation (CA) frequency bands.

As used herein, "electronic equipment" (which may also be referred to as a "terminal" or "mobile terminal" or "electronic device") includes, but is not limited to, devices that are configured to receive/transmit communication signals via a wireline connection, such as via a Public Switched Telephone Network (PSTN), a Digital Subscriber Line (DSL), a digital cable, a direct cable connection, and/or another data connection/network, and/or via a wireless interface (e.g., for a cellular network, a Wireless Local Area Network (WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter, and/or another communication terminal). A communication terminal arranged to communicate over a wireless interface may be referred to as a "wireless communication terminal", "wireless terminal" or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; a Personal Communications System (PCS) terminal that may combine a cellular radiotelephone with data processing, facsimile and data communications capabilities; PDAs that may include radiotelephones, pagers, internet/intranet access, Web browsers, notepads, calendars, and/or Global Positioning System (GPS) receivers; and conventional laptop and/or palmtop receivers or other electronic devices that include a radiotelephone transceiver. A cellular phone is an electronic device equipped with a cellular communication module.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an antenna element 100 according to an embodiment of the present application. The antenna assembly 100 may be one or a mixture of Flexible Printed Circuit (FPC) antenna, Laser Direct Structuring (LDS) antenna, Print Direct Structuring (PDS) antenna, and metal stub antenna. Of course, the antenna assembly 100 may also be other types of antennas, which are not described in detail.

The antenna assembly 100 may include a first radiator 10 and a second radiator 20 spaced apart from the first radiator 10 and capacitively coupled thereto. A first slot 101 is disposed between the first radiator 10 and the second radiator 20, so that the first radiator 10 and the second radiator 20 are capacitively coupled through the first slot 101. The "capacitive coupling" means that an electric field is generated between the first radiator 10 and the second radiator 20, a signal of the first radiator 10 can be transmitted to the second radiator 20 through the electric field, and a signal of the second radiator 20 can be transmitted to the first radiator 10 through the electric field, so that the first radiator 10 and the second radiator 20 can be electrically connected even in an off state.

The terms "first", "second", "third", etc. in this application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first," "second," "third," etc. may explicitly or implicitly include at least one of the feature.

It is understood that, in other embodiments, the names "first radiator", "second radiator", and "radiator" in the above embodiments may be mutually converted. For example, the "first radiator" may be converted into the "second radiator", and accordingly, the "second radiator" may be converted into the "first radiator".

In addition, the first radiator 10 may be used as the first antenna 30. The first antenna 30 may be a low frequency antenna. The second radiator 20 may be used with a portion of the first radiator 10 as the second antenna 40. The second antenna 40 may be a medium-high frequency antenna. It can be seen that the second antenna 40 can utilize not only the second radiator 20 but also a portion of the first radiator 10 to transmit and receive electromagnetic wave signals during operation, so that the second antenna 40 can operate in a wider middle and high frequency band to support the carrier aggregation frequency band. In addition, the second antenna 40 can also implement multiplexing of radiators such as the first radiator 10, and also implement spatial multiplexing, which is beneficial to reducing the size of the antenna assembly 100. It is understood that the first antenna 30 may not be limited to the first radiator 10. The second antenna 40 may not be limited to only a portion of the first radiator 10 and the second radiator 20. The antenna assembly 100 may include the first antenna 30 and the second antenna 40 described in this embodiment.

It is understood that the first antenna 30 and the second antenna 40 may be used separately. Of course, the first antenna 30 and the second antenna 40 may be used together. In the antenna assembly 100, the usage of the first antenna 30 and the second antenna 40 may be specifically set according to actual requirements. That is, in some embodiments, the first antenna 30 or the second antenna 40 in the antenna assembly 100 may be omitted.

In other embodiments, the names "first antenna", "second antenna", and "antenna" in the above embodiments may be switched to each other, for example, "first antenna" may be switched to "second antenna", and accordingly, "second antenna" may be switched to "first antenna".

Referring to fig. 1 and 2, fig. 2 is a schematic structural diagram of the first radiator 10 in fig. 1. The first radiator 10 is provided with a first end 11 remote from the first slot 101 and a second end 12 close to the first slot 101.

The first radiator 10 is provided with a first feeding point 13 between the first end 11 and the second end 12. In some embodiments, the first feeding point 13 is electrically connected to a matching circuit, for example a first matching circuit 14. The first matching circuit 14 may be electrically connected to a power supply, such as a first power supply 15.

The first radiator 10 is provided with a first grounding point 16 between the second end 12 and the first feeding point 13, the first grounding point 16 may be electrically connected to a first tuning control circuit 17, and the first tuning control circuit 17 is grounded.

The first tuning control circuit 17 is mainly used to realize the requirement that the first antenna 30 supports a plurality of low frequency bands. Of course, in some embodiments, the requirement of multiple mid-high frequency bands for the second antenna 40 may also be implemented. Thus, the first tuning control circuit 17 may be constituted by a switch control unit and/or a load circuit, or by a tunable capacitor and/or a tunable inductor. In an embodiment, the switch control unit may be a switch chip with a switching function, and may also be a single-pole multi-throw switch or a single-pole single-throw switch.

The first radiator 10 is provided with a second grounding point 18 between the first feeding point 13 and the first grounding point 16, the second grounding point 18 being electrically connectable to a second tuning control circuit 19, the second tuning control circuit 19 being grounded.

It is to be understood that in other embodiments, the designations "first ground point", "second ground point" and "ground point" in the above embodiments may be interchanged. For example, "second ground point" may be converted to "first ground point", and correspondingly "first ground point" may be converted to "second ground point".

The second tuning control circuit 19 is mainly for fulfilling the requirement of multiple mid-high frequency bands of the second antenna 40. Thus, the second tuning control circuit 19 may be a band pass filter circuit. In some embodiments, the second tuning control circuit 19 may also include a switch control unit in series with the band pass filter circuit. In an embodiment, the switch control unit may be a switch chip with a switching function, and may also be a single-pole multi-throw switch or a single-pole single-throw switch.

Referring to fig. 1 and 3, fig. 3 is a schematic structural diagram of the second radiator 20 in fig. 1. The second radiator 20 is provided with a third end 21 remote from the first slot 101 and a fourth end 22 close to the first slot 101.

It is to be understood that in other embodiments, the designations "first terminal", "second terminal", "third terminal", "fourth terminal" and "terminal" in the above embodiments may be switched with each other, for example, "first terminal" may be switched to "second terminal", and correspondingly, "second terminal" may be switched to "first terminal".

The third terminal 21 of the second radiator 20 is grounded. The grounding of the third terminal 21 can reduce the length between the third terminal 21 and the grounding point in the second radiator 20 in fig. 1, thereby making the size of the second radiator 20 smaller.

The second radiator 20 is provided with a second feeding point 23 between the third end 21 and the fourth end 22. The second feeding point 23 is electrically connected to a third tuning control circuit 24. The third tuning control circuit 24 may be electrically connected to a power supply, such as a second power supply 25.

It is to be understood that in other embodiments, the designations "first tuning control circuit", "second tuning control circuit", "third tuning control circuit" and "tuning control circuit" in the above-described embodiments may be switched to each other, for example, the "first tuning control circuit" may be switched to the "second tuning control circuit", and correspondingly the "second tuning control circuit" may be switched to the "first tuning control circuit".

In addition, in other embodiments, the designations "first feeding point", "second feeding point" and "feeding point" in the above-described embodiments may be switched to each other, for example, "first feeding point" may be switched to "second feeding point", and accordingly, "second feeding point" may be switched to "first feeding point".

In addition, in other embodiments, the names "first feeding source", "second feeding source", and "feeding source" in the above embodiments may be converted to each other, for example, "first feeding source" may be converted to "second feeding source", and accordingly, "second feeding source" may be converted to "first feeding source".

The third tuning control circuit 24 is mainly for realizing the requirement of multiple middle and high frequency bands of the second antenna 40, and therefore, the third tuning control circuit 24 may be composed of a switch control unit and/or a load circuit, or composed of an adjustable capacitor and/or an adjustable inductor. In an embodiment, the switch control unit may be a switch chip with a switching function, and may also be a single-pole multi-throw switch or a single-pole single-throw switch.

It will be appreciated that a matching circuit, for example a second matching circuit (not shown), may be provided between the second feeding point 23 and the second feeding source 25 in series with the third tuning control circuit 24.

In addition, the names "first matching circuit", "second matching circuit", and "matching circuit" in the above-described embodiments may be mutually converted, for example, "first matching circuit" may be converted into "second matching circuit", and accordingly, "second matching circuit" may be converted into "first matching circuit".

Referring to fig. 4, fig. 4 is a graph illustrating a resonant current distribution of the first resonant mode of the antenna assembly 100. The first antenna 30, e.g. the first radiator 10, operates in a fundamental mode between the second end 12 and the first feeding point 13 to generate a first resonant mode. Specifically, the first feeding source 15 is configured to provide a first excitation signal that generates an electromagnetic signal in a first frequency band. The first excitation signal generates a first resonance mode when applied between the second end 12 and the first feeding point 13. The resonant current of the first resonant mode is distributed between the second end 12 and the first feeding point 13. As shown by the dotted arrow in fig. 4, when the first antenna 30, for example, the first radiator 10 resonates in the first resonant mode, the resonant current of the first radiator 10 flows from the second end 12 to the first feeding point 13.

Referring to fig. 5, fig. 5 is a graph illustrating a resonant current distribution of the second resonant mode of the antenna assembly 100. The first antenna 30, e.g. the first radiator 10, operates in a fundamental mode between the first end 11 and the second end 12 to generate a second resonant mode. In particular, the first feed 15 is adapted to provide a second excitation signal for generating electromagnetic signals in a second frequency band. The second excitation signal generates a second resonance mode when applied between the first end 11 and the second end 12. The resonant current of the second resonant mode is distributed between the first end 11 and the second end 12. As shown by the dotted arrows in fig. 5, the resonant current of the second resonant mode flows to the first antenna 30, for example, the resonant current of the first radiator 10 includes a first current Ix and a second current Iy, the first current Ix flows to the first feeding point 13 through the second end 12, and the second current Iy flows to the first feeding point 13 through the first end 11.

Referring to fig. 6, fig. 6 is a diagram illustrating a resonant current distribution of the third resonant mode in the antenna assembly 100. The first antenna 30, e.g. the first radiator 10, operates in a fundamental mode between the first end 11 and the first feeding point 13 to generate a third resonance mode. In particular, the first feed 15 is adapted to provide a third excitation signal that generates electromagnetic signals in a third frequency band. A third resonance mode is generated when a third excitation signal is applied between the first end 11 and the first feeding point 13. The resonant current of the third resonant mode is distributed between the first end 11 and the first feeding point 13. As shown by the dotted arrows in fig. 6, when the first antenna 30 resonates in the third resonant mode, the resonant current of the first antenna 30, for example, the first radiator 10, flows from the first end 11 to the first feeding point 13.

Referring to fig. 7 and 8, fig. 7 is a graph illustrating return loss curves of three resonant modes of the antenna assembly 100 shown in fig. 4, 5, and 6, and fig. 8 is a graph illustrating dynamically adjusted return loss curves of the three resonant modes of the antenna assembly 100 shown in fig. 7. The first antenna 30, for example, the first radiator 10 may support the first resonant mode a1, the second resonant mode a2, and the third resonant mode A3. The frequency band corresponding to the first resonant mode a1 is a first frequency band B1, the frequency band corresponding to the second resonant mode a2 is a second frequency band B2, and the frequency band corresponding to the third resonant mode A3 is a third frequency band B3. The first band B1 can be a low band, and the first resonant mode a1 is more effective.

The frequency band of the first radiator 10 during operation can be tuned by tuning the first tuning control circuit 17. While the return loss curve may vary during tuning. For example, in fig. 15 return loss curve i is transformed into return loss curve ii. For example, return loss curve i in fig. 15 is converted to return loss curve iii. For example, return loss curve ii in fig. 15 is converted to return loss curve iii.

In one embodiment, the first tuning control circuit 17 may be a switch or a variable capacitor.

In the return loss curves i, ii, iii in fig. 8, the first frequency band in the first resonance mode a1 may be a different frequency band in the low frequency (LB) band. Furthermore, the first frequency band can be tuned by the first tuning control circuit 17, so that the first frequency band can include a general Term of LTE network systems such as LTE-4G (Time Division Long Term Evolution, OFDMA technology) and LTE (Long Term Evolution ), which can also be referred to as 4G-LTE) frequency bands (for example, at least one of LTE-5 frequency band, LTE-8 frequency band, LTE-12 frequency band, LTE-17 frequency band, LTE-18 frequency band, LTE-19 frequency band, LTE-20 frequency band, LTE-26 frequency band, LTE-28 frequency band, etc.), at least one of a carrier aggregated Band (e.g., at least one of LTE Band 8 Band, etc.) and an NR-5G (also referred to as a 5G new radio, also referred to as a 5G new air interface, also referred to as a 5G-NR, also referred to simply as NR) Band (e.g., at least one of an N20 Band and an N28 Band, etc.).

Referring to fig. 9, fig. 9 is a diagram illustrating a resonant current distribution of the fourth resonant mode in the antenna assembly 100. The second antenna 40, for example the second radiator 20, operates in the fundamental mode between the third terminal 21 and the second feeding point 23 to generate a fourth resonant mode. In particular, the second feed source 25 is adapted to provide a fourth excitation signal that generates electromagnetic signals in a fourth frequency band. A fourth resonance mode is generated when the fourth excitation signal is applied between the third terminal 21 and the second feeding point 23. The resonant current of the fourth resonant mode is distributed between the third terminal 21 and the second feeding point 23. As shown by the dotted arrow in fig. 9, when the second antenna 40, for example, the second radiator 20 resonates in the fourth resonant mode, the resonant current of the second radiator 20 flows from the third terminal 21 to the second feeding point 23.

Referring to fig. 10, fig. 10 is a graph illustrating a resonant current distribution of the fifth resonant mode of the antenna assembly 100. A fifth resonant mode is generated by the second antenna 40, e.g., the first radiator 10, operating in the fundamental mode between the second end 12 and the second ground point 18. In particular, the second feed source 25 is adapted to provide a fifth excitation signal that generates electromagnetic signals in a fifth frequency band. A fifth resonant mode is generated when the fifth excitation signal is applied between the second terminal 12 and the second ground point 18. The resonant current of the fifth resonant mode is distributed between the first terminal 11 and the second ground point 18. The resonant current of the fifth resonant mode flows as indicated by the dashed arrow in fig. 10, and the resonant current on the second antenna 40, e.g. the first radiator 10, flows to the second end 12 via the second ground point 18.

Referring to fig. 11, fig. 11 is a diagram illustrating a resonant current distribution of the sixth resonant mode in the antenna assembly 100. The second antenna 40, e.g., the first radiator 10, operates in the fundamental mode between the second end 12 and the first ground point 16 to produce a sixth resonant mode. In particular, the second feed source 25 is configured to provide a sixth excitation signal that generates electromagnetic signals in a sixth frequency band. A sixth resonant mode is generated when the sixth excitation signal is applied between the second terminal 12 and the first ground point 16. The resonant current of the sixth resonant mode is distributed between the second end 12 and the first ground point 16. The resonant current of the sixth resonant mode flows as indicated by the dashed arrow in fig. 11, and the current on the second antenna 40, e.g., the first radiator 10, flows to the second end 12 via the first ground point 16.

Referring to fig. 12 and 13, fig. 12 is a graph illustrating return loss curves for three resonant modes of the antenna assembly 100 shown in fig. 9, 10, and 11, and fig. 13 is a graph illustrating dynamically adjusted return loss curves for the three resonant modes of the antenna assembly 100 shown in fig. 12. The second antenna 40, for example, a portion of the first radiator 10 and the second radiator 20 may support the fourth resonant mode C1, the fifth resonant mode C2, and the sixth resonant mode C3. The frequency band corresponding to the fourth resonant mode C1 is the fourth frequency band B1, the frequency band corresponding to the fifth resonant mode C2 is the fifth frequency band B2, and the frequency band corresponding to the sixth resonant mode C3 is the sixth frequency band B3. The fourth resonance mode is less effective, and the fifth resonance mode and the sixth resonance mode are better effective.

The frequency band in which the second antenna 40 operates can be tuned by the first tuning control circuit 17 and the third tuning control circuit 24. While during tuning the return loss curve can be changed, for example the return loss curve iv in fig. 13 is transformed into the return loss curve v. For example, return loss curve iv is converted into return loss curve vi. For example, in fig. 13 return loss curve v is transformed into return loss curve vi.

In one embodiment, the first tuning control circuit 17 is a switch or a variable capacitor, the third tuning control circuit 24 is a switch or a variable capacitor, and the second tuning control circuit 19 is a band-pass filter circuit.

In the return loss curves iv, v, vi in fig. 13, the fourth frequency band at the fourth resonance mode C1, the fifth frequency band at the fifth resonance mode C2, and the sixth frequency band B3 at the sixth resonance mode C3 collectively form a wide middle-high frequency band. When the first tuning control circuit 17 and the third tuning control circuit 24 are used to tune the frequency band of the second antenna 40 during operation, the fourth frequency band under the tunable fourth resonant mode C1, the fifth frequency band under the tunable fifth resonant mode C2, and the sixth frequency band B3 under the tunable sixth resonant mode C3 together form a medium-high frequency band bandwidth. Further, the medium-high frequency Band jointly formed by the fourth frequency Band in the fourth resonance mode C1, the fifth frequency Band in the fifth resonance mode C2 and the sixth frequency Band B3 in the sixth resonance mode C3 may include at least one of an LTE-4G frequency Band (e.g., at least one of an LTE-1 frequency Band, an LTE-3 frequency Band, an LTE-4 frequency Band, an LTE-7 frequency Band, an LTE-38 frequency Band, an LTE-39 frequency Band, an LTE-40 frequency Band, and an LTE-41 frequency Band), an NR-5G frequency Band (e.g., at least one of an N1 frequency Band, an N3 frequency Band, an N40 frequency Band, and an N41 frequency Band), and a carrier aggregation frequency Band (e.g., an LTE Band 1 frequency Band + LTE Band 3 frequency Band + LTE Band 7 frequency Band).

In an embodiment, the frequency band of the second antenna 40 during operation can be tuned by tuning the first tuning control circuit 17, the second tuning control circuit 19 and the third tuning control circuit 24. The fourth frequency band under the fourth resonant mode C1, the fifth frequency band under the fifth resonant mode C2 and the sixth frequency band B3 under the sixth resonant mode C3 together form a middle-high frequency band, and the antenna 40 can support middle-high frequency (MHB (1000 + 3000MHz)), middle frequency (MB (1500 + 2200MHz)), high frequency (HB (2300 + 2700MHz)), ultra-high frequency (UHB (3400 + 3800MHz)) and ultra-wide band (Sub 6G (4500 + 6500 MHz)).

In an embodiment, the fifth frequency band under the fifth resonant mode C2 and the sixth frequency band B3 under the sixth resonant mode C3 together form a medium-high frequency band, which may further include at least one of an NR-5G frequency band (e.g., at least one of an N1 frequency band, an N3 frequency band, an N7 frequency band, an N40 frequency band, an N41 frequency band, an N77 frequency band, an N78 frequency band, an N79 frequency band, etc.) and an ultra-wideband Sub-6G frequency band.

In one embodiment, the second tuning control circuit 19 may include a band-pass filter circuit and a switch control unit connected in series with the band-pass filter circuit.

It is to be understood that in other embodiments, the designations "first resonance mode", "second resonance mode", "third resonance mode", "fourth resonance mode", "fifth resonance mode", "sixth resonance mode" and "resonance mode" in the above-described embodiments may be switched with each other, for example, the "first resonance mode" may be switched to the "second resonance mode", and correspondingly the "second resonance mode" may be switched to the "first resonance mode".

It is to be understood that, in other embodiments, the names "first band", "second band", "third band", "fourth band", "fifth band", "sixth band" and "band" in the above embodiments may be mutually converted, for example, the "first band" may be converted into the "second band", and correspondingly, the "second band" may be converted into the "first band".

It is to be understood that in other embodiments, the designations "first excitation signal", "second excitation signal", "third excitation signal", "fourth excitation signal", "fifth excitation signal", "sixth excitation signal" and "excitation signal" in the above-described embodiments may be mutually converted, for example, the "first excitation signal" may be converted into the "second excitation signal", and correspondingly the "second excitation signal" may be converted into the "first excitation signal".

Next, an electronic device that can mount the antenna assembly 100 in the above-described embodiment will be explained. The electronic device may be any one of a number of electronic devices including, but not limited to, cellular phones, smart phones, other wireless communication devices, personal digital assistants, audio players, other media players, music recorders, video recorders, cameras, other media recorders, radios, medical devices, calculators, programmable remote controllers, pagers, netbook computers, Personal Digital Assistants (PDAs), Portable Multimedia Players (PMPs), moving picture experts group (MPEG-1 or MPEG-2), audio layer 3(MP3) players, portable medical devices, and digital cameras and combinations thereof.

Referring to fig. 14, fig. 14 is a schematic structural diagram of an electronic device according to an embodiment of the present application. The electronic device 200 may include a display screen 50 for displaying information, a middle frame assembly 60 for mounting the display screen 50 on one side, a circuit board 70 mounted on the middle frame assembly 60, a battery 80 mounted on the middle frame assembly 60, and a rear cover 90 snap-coupled to the other side of the middle frame assembly 60.

In some embodiments, the electronic device 200 may include, but is not limited to, an electronic device having a communication function, such as a mobile phone, an internet device (MID), an electronic book, a Portable Player Station (PSP), or a Personal Digital Assistant (PDA).

The Display screen 50 may be a Liquid Crystal Display (LCD) or an Organic Light-Emitting Diode (OLED) Display screen, and the like, for displaying information and pictures.

The material of the middle frame assembly 60 may be a metal such as magnesium alloy, aluminum alloy, stainless steel, etc., but the material is not limited thereto and may be other materials. The center frame assembly 60 may be disposed between the display screen 50 and the rear cover 90. The center frame assembly 60 may be used to carry the display screen 50. The middle frame assembly 60 is snap-fit connected with the rear cover 90 to form an outer contour of the electronic device 200 and an accommodating cavity is formed inside. The housing chamber may be used to house electronic components such as a camera, a circuit board 70, a battery 80, a processor, and various types of sensors in the electronic apparatus 200.

The circuit board 70 is mounted in the receiving cavity, and may be mounted at any position in the receiving cavity. The circuit board 70 may be a main board of the electronic device 200. The processor of the electronic device 200 may be disposed on the circuit board 70. One, two or more functional components such as a motor, a microphone, a speaker, a receiver, an earphone interface, a universal serial bus interface (USB interface), a camera, a distance sensor, an ambient light sensor, and a gyroscope may also be integrated on the circuit board 70. Meanwhile, the display screen 50 may be electrically connected to the circuit main board 70.

The battery 80 is mounted in the receiving cavity and can be mounted at any position in the receiving cavity. The battery 80 may be electrically connected to the circuit board 70 to supply power to the electronic device 200 by the battery 80. The circuit board 70 may be provided with a power management circuit. The power management circuit is used to distribute the voltage provided by the battery 80 to various electronic components in the electronic device 200, such as the display screen 50.

The rear cover 90 may be made of the same material as the center frame assembly 60, although other materials may be used. The rear cover 90 may be integrally formed with the center frame assembly 60. In some embodiments, the back cover 90 may wrap around the center frame assembly 60 and may carry the display screen 50. Rear cover 90 is last to form rearmounted camera hole, fingerprint identification module mounting hole isotructure.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Referring to fig. 15, fig. 15 is a schematic structural diagram illustrating the antenna assembly 100 of fig. 14 mounted on the middle frame assembly 60. The middle frame assembly 60 may include a substrate 61 for carrying the display screen 50 and a bezel 62 surrounding the substrate 61. Wherein the substrate 61 is disposed opposite to the rear cover 90. The rim 62 may be adapted to snap fit with the rear cover 90. That is, the substrate 61, the frame 62, and the rear cover 90 enclose a receiving cavity.

The substrate 61 may be a conductive metal, but may be other materials. The substrate 61 may be provided with a ground plane and a power supply. In some embodiments, the ground plane and the power supply may not be disposed on the substrate 61, but directly disposed on the circuit board 70.

The bezel 62 may be a conductive metal, so the bezel 62 may also be referred to as a "metal bezel". Although the frame 62 may be other materials. The frame 62 may include a first frame 621, a second frame 622, a third frame 623, and a fourth frame 624 connected end to end in sequence. The first frame 621, the second frame 622, the third frame 623 and the fourth frame 624 surround the substrate 61 and can be connected and fixed with the substrate 61.

In some embodiments, the first rim 621, the second rim 622, the third rim 623, and the fourth rim 624 form a rounded rectangle. Of course, other shapes are possible, such as circular, triangular. In some embodiments, the first rim 621 is disposed opposite the third rim 623, and the second rim 622 is disposed opposite the fourth rim 624.

The middle frame assembly 60 and the rear cover 90 may constitute a housing assembly. And the housing assembly may not be limited to the middle frame assembly 60 and the rear cover 90. The housing assembly may be attached, bonded, clamped, snapped, welded, etc. to provide the antenna assembly 100.

In some embodiments, the antenna assembly 100 may be formed from a housing assembly. For example, the antenna assembly 100 may be formed by the frame 62, such as the first frame 621 and the second frame 622.

Referring to fig. 15 again, a gap 63 is formed between the second frame 622 and the substrate 61. The gap 63 may extend toward the first frame 621 in the extending direction of the second frame 622. The gap 63 may extend in the extending direction of the first frame 621 to be formed between the first frame 621 and the substrate 61.

The second frame 622 has a first slot 631 and a second slot 632 connected to the gap 63, so that the second radiator 20 of the antenna assembly 100 is formed between the first slot 631 and the second slot 632.

The first frame 621 is provided with a third slot 633 communicating with the gap 63, so that the frame 62 forms the first radiator 10 of the antenna assembly 100 between the first slot 631 and the third slot 633.

In the present application, the first radiator 10 utilizes the second frame 622, which can reduce the use of the first frame 621, so as to effectively improve the low frequency loss of the human hand to the first radiator 10, and the length of the first radiator 10 utilizing the second frame 622 can be adjusted according to the model of the hand model and the required length of the low frequency band.

It is understood that the extending length of the gap 63 may be determined as required, and in some embodiments, the gap 63 may not extend in the extending direction of the second frame 622, i.e., may not be disposed between the second frame 622 and the substrate 61. In some embodiments, the gap 63 may not extend in the extending direction of the first frame 621, that is, the gap may not extend between the first frame 621 and the substrate 61.

It is to be understood that in other embodiments, the designations "first slit", "second slit", "third slit", "gap", and "slit" in the above embodiments may be switched to each other, for example, "first slit" may be switched to "second slit", and correspondingly, "second slit" may be switched to "first slit".

It is understood that in other embodiments, the names "first border", "second border", "third border", "fourth border", and "border" in the above embodiments may be converted to each other, for example, the "first border" may be converted to the "second border", and correspondingly, the "second border" may be converted to the "first border".

In addition, the positions of the first slit 631, the second slit 632, and the third slit 633 can be adjusted according to the needs and the length of the frame, which is not described in detail.

The first tuning control circuit 17 in the antenna assembly 100 may be electrically connected to a ground plane on the substrate 61 or the circuit board 70 to be grounded.

The second tuning control circuit 19 in the antenna assembly 100 may be electrically connected to the ground plane on the substrate 61 or the circuit board 70 to be grounded.

The first power supply 15 in the antenna assembly 100 may be a power supply on the substrate 61 or the circuit board 70.

The third terminal 21 of the antenna assembly 100 may be electrically connected to a ground plane on the substrate 61 or the circuit board 70 for grounding.

The second power supply 25 in the antenna assembly 100 may be a power supply on the substrate 61 or the circuit board 70.

It is understood that the connection strength between the substrate 61 and the frame 62 is stabilized. An insulating material, such as resin, may be filled between the gap 63, the first slot 631, the second slot 632, and the third slot 633 to realize that the first radiator 10 and the second radiator 20 in the antenna assembly 100 are part of the frame 62, which further improves the appearance of the electronic device 200.

The above description is only an example of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings, or which are directly or indirectly applied to other related technical fields, are intended to be included within the scope of the present application.

Claims

1. An antenna assembly, characterized in that the antenna assembly comprises:

2. The antenna assembly of claim 1, wherein the resonant current of the first resonant mode flows from the second end to the first feed point.

3. The antenna assembly of claim 1, wherein the first frequency band comprises at least one of an LTE-5 frequency band, an LTE-8 frequency band, an LTE-12 frequency band, an LTE-17 frequency band, an LTE-18 frequency band, an LTE-19 frequency band, an LTE-20 frequency band, an LTE-26 frequency band, and an LTE-28 frequency band of an LTE-4G frequency band, and/or wherein the first frequency band comprises at least one of an N20 frequency band and an N28 frequency band of an NR-5G frequency band.

4. An antenna assembly according to any one of claims 1 to 3, wherein the first tuning control circuit is a switch control unit or a tunable capacitor.

5. The antenna assembly of claim 1, wherein the first feed point is electrically connected to a matching circuit, the matching circuit being electrically connected to the first feed source.

6. The antenna assembly of any one of claims 1-3 and 5, wherein the base film of the first radiator operating from the first end to the second end generates a second resonant mode, and wherein resonant currents of the second resonant mode include a first current and a second current, the first current flowing to the first feeding point via the second end and the second current flowing to the first feeding point via the first end.

7. The antenna assembly of any one of claims 1-3, 5, wherein the first radiator operates in a third resonant mode on the base film from the first end to the first feed point, and wherein resonant current of the third resonant mode flows to the first feed point via the first end.

8. The antenna assembly of any one of claims 1-3, 5, further comprising:

the second radiator is provided with a third end and a fourth end, is arranged at an interval with the first radiator, and is capacitively coupled with the first radiator at the fourth end and the second end so that the first radiator and the second radiator are matched to support a medium-high frequency band, the third end is used for grounding, a second feed point is arranged between the third end and the fourth end of the second radiator, the second feed point is electrically connected with a third tuning control circuit, and the third tuning control circuit is used for being electrically connected with a second feed source.

9. The antenna assembly of claim 8, wherein the second radiator operates in a fundamental mode from the third terminal to the second feed point to produce a fourth resonant mode, wherein the first radiator operates in a fundamental mode from the second ground point to the second terminal to produce a fifth resonant mode, wherein the first radiator operates in a fundamental mode from the first ground point to the second terminal to produce a sixth resonant mode, and wherein the fourth resonant mode, the fifth resonant mode, and the sixth resonant mode collectively support a plurality of different mid-high frequency bands.

10. The antenna assembly of claim 9, wherein the plurality of different mid-high bands comprise at least one of LTE-1 Band, LTE-3 Band, LTE-4 Band, LTE-7 Band, LTE-38 Band, LTE-39 Band, LTE-40 Band, and LTE-41 Band in LTE-4G Band, and/or the plurality of different mid-high bands comprise at least one of N1 Band, N3 Band, N40 Band, and N41 Band in NR-5G Band, and/or the plurality of different mid-high bands comprise carrier aggregation Band LTE Band 1 Band + LTE Band 3 Band or carrier aggregation Band LTE Band 1 Band + LTE Band 3 Band + LTE Band 7 Band.

11. The antenna assembly of claim 9, wherein the resonant current of the fourth resonant mode flows to the second feed point via the third terminal.

12. The antenna assembly of claim 9, wherein the resonant current of the fifth resonant mode flows to the second terminal via the second ground point.

13. The antenna assembly of claim 9, wherein the resonant current of the sixth resonant mode flows to the second terminal via the first ground point.

14. The antenna assembly of any one of claims 9-13, wherein the first tuning control circuit is a switching control unit or a tunable capacitor, the third tuning control circuit is a switching control unit or a tunable capacitor, the second tuning control circuit includes a bandpass filter circuit, the second ground contact is electrically connected to the bandpass filter circuit, and the bandpass filter circuit is grounded.

15. The antenna assembly of claim 14, wherein the third tuning control circuit further comprises a switch control unit in series with the band pass filter circuit.

16. The antenna assembly of claim 15, characterized in that the plurality of different mid-high frequency bands comprise at least one of an N1 band, an N3 band, an N7 band, an N40 band, an N41 band, an N77 band, an N78 band and an N79 band of NR-5G bands and/or the plurality of different mid-high frequency bands comprise ultra wideband Sub-6G bands.

17. An intermediate frame assembly, characterized in that the intermediate frame assembly is provided with an antenna assembly according to any one of claims 1-16, the intermediate frame assembly comprising:

18. An electronic device, comprising:

the middle frame assembly of claim 17;

the display screen is arranged on one side of the middle frame component; and