WO2023142799A1

WO2023142799A1 - Antenna assembly and mobile terminal

Info

Publication number: WO2023142799A1
Application number: PCT/CN2022/140828
Authority: WO
Inventors: 吴小浦
Original assignee: Oppo广东移动通信有限公司
Priority date: 2022-01-28
Filing date: 2022-12-21
Publication date: 2023-08-03
Also published as: CN114465007A

Abstract

An antenna assembly and a mobile terminal (100). The antenna assembly comprises a first radiator (111) and a first signal source (112). The first radiator (111) comprises a first grounding end (1111), a first free end (1113) and a first connection point (1112). The first signal source (112) is electrically connected to the first connection point (1112), and the first connection point (1112) is located between the first grounding end (1111) and the first free end (1113). The antenna assembly supports reception and transmission of electromagnetic wave signals in a first frequency band, a second frequency band and a third frequency band; the first frequency band is an LB frequency band, the second frequency band is a GPS-L5 frequency band, and the third frequency band is an MHB or UHB frequency band. One resonant mode of the antenna assembly supports the reception and transmission of the electromagnetic wave signals in the first frequency band, one resonant mode supports the reception and transmission of the electromagnetic wave signals in the second frequency band, and at least one resonant mode supports the reception and transmission of the electromagnetic wave signals in the third frequency band.

Description

Antenna components and mobile terminals

This application claims the priority of the Chinese patent application with the application number 202210107728.9 and the title of the invention "antenna assembly and mobile terminal" filed with the China Patent Office on January 28, 2022, the contents of which should be understood to be incorporated herein by reference Applying.

technical field

Embodiments of the present disclosure relate to but are not limited to the technical field of antennas, and in particular, relate to an antenna component and a mobile terminal.

Background technique

With the development and progress of technology, mobile communication technology is gradually applied to communication devices, such as mobile phones. For communication equipment supporting the fifth generation (the 5th Generation, 5G) mobile communication technology, considering the high cost of 5G independent networking (Stand Alone, SA), its communication equipment is usually based on the ability to support non-independent networking (Non- Standalone, NSA) mode radio frequency architecture to support independent networking mode. In the non-independent networking mode, the dual connection mode of 4G (the 4th Generation, fourth-generation mobile communication technology) signal and 5G signal is usually used, such as EN-DC (E-UTRA and New radio Dual Connectivity, 4G wireless access Network and 5G new air interface dual connection) form.

For the non-independent networking mode, the mobile terminal can be equipped with multiple low-frequency (Lower Band, LB) antennas to implement the ENDC mode. LB refers to the frequency band with a frequency lower than 1000MHz. However, it is limited by the accommodation space of the mobile terminal and the electromagnetic radiation of the antenna. Affected, the mobile terminal can only realize L+L (4G LTE low frequency plus 5G NR low frequency dual connection) communication in a specific frequency band in ENDC mode.

Summary of the invention

The following is an overview of the topics described in detail in this article. This summary is not intended to limit the scope of the claims.

On the one hand, an embodiment of the present disclosure provides an antenna assembly, including a first radiator and a first signal source, one end of the first radiator is a first ground terminal, the other end is a first free end, and the first radiator A radiator further includes a first connection point, the first signal source is electrically connected to the first connection point, and the first connection point is located between the first ground end and the first free end and adjacent to The first ground terminal; the antenna assembly is used to support the transmission and reception of electromagnetic wave signals in the first frequency band, the second frequency band and the third frequency band, the first frequency band is the LB frequency band, and the second frequency band is the GPS-L5 frequency band , the third frequency band is an MHB or UHB frequency band;

The antenna assembly has multiple resonance modes, wherein: one resonance mode is used to support the transmission and reception of electromagnetic wave signals in the first frequency band; one resonance mode is used to support the transmission and reception of electromagnetic wave signals in the second frequency band; at least one The resonance mode is used to support the sending and receiving of electromagnetic wave signals in the third frequency band.

On the other hand, an embodiment of the present disclosure also provides a mobile terminal including the foregoing antenna assembly.

Additional features and advantages of the disclosure will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the disclosure. Other advantages of the present disclosure can be realized and obtained by the solutions described in the specification, claims and drawings.

Other aspects will be apparent to others upon reading and understanding the drawings and detailed description.

Figure overview

The accompanying drawings are used to provide an understanding of the technical solutions of the present disclosure, and constitute a part of the specification, and are used together with the embodiments of the present disclosure to explain the technical solutions of the present disclosure, and do not constitute limitations to the technical solutions of the present disclosure. The shapes and sizes of the various components in the drawings do not reflect true scale, but are only intended to illustrate the present disclosure.

FIG. 1 is a schematic diagram of a mobile terminal according to an embodiment of the present disclosure;

FIG. 2 is a schematic diagram of an antenna assembly according to an embodiment of the present disclosure;

3A is a schematic diagram of an antenna assembly in a first resonance mode according to an embodiment of the present disclosure;

3B is a schematic diagram of an antenna assembly in a second resonance mode according to an embodiment of the present disclosure;

3C is a schematic diagram of an antenna assembly in a third resonance mode according to an embodiment of the present disclosure;

FIG. 4 is a schematic diagram of return loss curves of an antenna assembly at different frequencies according to an embodiment of the present disclosure;

5 is a schematic diagram of an antenna assembly according to another embodiment of the present disclosure;

6A is a schematic diagram of an antenna assembly in a fourth resonance mode according to an embodiment of the present disclosure;

6B is a schematic diagram of an antenna assembly in a fifth resonance mode according to an embodiment of the present disclosure;

7 is a schematic diagram of the return loss curves of the antenna assembly at different frequencies according to the embodiment of the present disclosure;

FIG. 8 is a schematic diagram of upper hemisphere energy radiated by an antenna according to an embodiment of the present disclosure;

FIG. 9 is a schematic diagram of return loss curves of an antenna assembly according to another embodiment of the present disclosure at different frequencies.

detail

The present disclosure describes a number of embodiments, but the description is illustrative rather than restrictive, and it will be apparent to those of ordinary skill in the art that within the scope encompassed by the described embodiments of the present disclosure, There are many more embodiments and implementations. Although many possible combinations of features are shown in the drawings and discussed in the description, many other combinations of the disclosed features are possible. Except where expressly limited, any feature or element of any embodiment may be used in combination with, or substituted for, any other feature or element of any other embodiment.

This disclosure includes and contemplates combinations of features and elements known to those of ordinary skill in the art. The disclosed embodiments, features and elements of this disclosure may also be combined with any conventional feature or element to form unique inventive solutions as defined by the claims. Any feature or element of any embodiment may also be combined with features or elements from other inventive solutions to form another unique inventive solution as defined by the claims. It is therefore to be understood that any of the features shown and/or discussed in this disclosure can be implemented alone or in any suitable combination. Accordingly, the embodiments are not to be limited except in accordance with the appended claims and their equivalents. Furthermore, various modifications and changes may be made within the scope of the appended claims.

Furthermore, in describing representative embodiments, the specification may have presented a method and/or process as a particular sequence of steps. However, to the extent the method or process is not dependent on the specific order of steps described herein, the method or process should not be limited to the specific order of steps described. Other sequences of steps are also possible, as will be appreciated by those of ordinary skill in the art. Therefore, the specific order of the steps set forth in the specification should not be construed as limitations on the claims. Furthermore, claims to the method and/or process should not be limited to performing their steps in the order written, as those skilled in the art can readily appreciate that such order can be varied and still remain within the spirit and scope of the disclosed embodiments Inside.

The network architecture of the 5G mobile communication system is divided into SA mode and NSA mode. The core architecture of the SA mode is that both the control plane and the user plane of the core network are connected to mobile phones through 5G base stations. A major feature of the NSA mode architecture is dual connectivity, that is, mobile terminals can communicate with both 4G and 5G at the same time. Generally, there will be a master connection and a slave connection. NSA mode includes any one of EN-DC, NE-DC and NGEN-DC frameworks. Among them, EN-DC refers to the dual connection between 4G wireless access network and 5G NR, NE-DC refers to the dual connection between 5G NR and 4G wireless access network, and NGEN-DC refers to the 4G wireless access network under the 5G core network. Network and 5G NR dual connection. Under the EN-DC architecture, electronic equipment is connected to the 4G core network, the 4G base station is the master connection, and the 5G base station is the slave connection. Under the NE-DC architecture, the 5G core network is introduced, the 5G base station is the master connection, and the 4G base station is the slave connection. Under the NGEN-DC framework, the 5G core network is introduced, the 4G base station is the master connection, and the 5G base station is the slave connection. Among them, DC stands for Dual Connectivity (Dual Connectivity, DC); E stands for Evolved-UMTS Terrestrial Radio Access (Evolved-UMTS Terrestrial Radio Access, E-UTRA or EUTRA) ), that is, 4G wireless access network; N stands for (new radio, NR) new air interface, that is, 5G new wireless; NG stands for (next generation, NG) next-generation core network, that is, 5G core network.

Taking the EN-DC mode as an example, the lower the frequency of the electromagnetic wave, the farther the distance it can propagate in space. Therefore, in the EN-DC mode, the lower band (Lower Band) used by 4G-LTE and 5G-NR , LB), LB refers to the frequency band with a frequency below 1000MHz, where 4G-LTE frequency bands may include B5, B8, B20, B28, etc., 5G-NR frequency bands may include N5, N8, N20, N28, etc.

In the related art, the mobile terminal can be equipped with multiple antennas to implement ENDC. However, due to the limitation of the accommodation space of the mobile terminal and the influence of antenna electromagnetic radiation, the frequency bands supported by the antenna are limited, so that the mobile terminal can only support specific antennas in ENDC mode. Frequency band, for example, the mobile terminal can only support the ENDC mode of L+L (LTE low frequency plus NR low frequency dual connection) in the frequency band between 700-960MHz, for example, B20+N28, B20+N8, B28+ N5. However, MHB (Middle High Band, MHB) - the frequency range between 1000MHz and 3000MHz cannot be supported at the same time. Therefore, there is an urgent need for communication that can cover low frequency and medium and high frequency at the same time.

In view of this, please refer to FIG. 1 , an embodiment of the present disclosure provides an antenna assembly capable of implementing intermediate frequency (MB) and/or high frequency (HB) and a mobile terminal 100 including the antenna assembly. Therefore, the mobile terminal 100 can also realize the dual connection of the intermediate frequency and/or the high frequency.

The mobile terminal 100 may be a mobile phone, a tablet computer, etc. In the embodiment of the present disclosure, the mobile terminal 100 is described as a mobile phone, but the mobile terminal 100 is not limited to a mobile phone.

As shown in Figure 1, the mobile terminal 100 includes a main body 20. In this example, the main body 20 is rectangular. In other examples, the main body can be in other shapes, including a top edge 21, a first side edge 22, and a bottom edge connected end to end. 23 and the second side 24, the top side 21 is opposite to the bottom side 23 and arranged at intervals, the first side 22 is opposite to the second side 24 and arranged at intervals, the first side 22 is connected to the top edge 21 and the bottom edge 23 respectively, the second side 24 is connected to the top edge 21 and the bottom edge 23 respectively, and the top edge 21 and the bottom edge 23 The lengths are the same, the lengths of the first side 22 and the second side 24 are the same, and the length of the top side 21 (or bottom side 23 ) is shorter than the length of the side side ( 22 or 24 ). Each side can be made of metal material, and there is no limit to the material herein.

In an exemplary embodiment, as shown in FIG. 1, the antenna assembly includes at least a first antenna 11, the first antenna 11 may be located on one side (for example, the first side 22), and the first antenna 11 includes a first radiator 111 and the first signal source 112, one end of the first radiator 111 is the first ground terminal 1111, and the other end is the first free terminal 1113, the first radiator 111 also includes a first connection point 1112, the first signal source 112 is electrically connected to the first connection point 1112 , the first connection point 1112 is located between the first ground terminal 1111 and the first free terminal 1113 and adjacent to the first ground terminal 1111 .

The so-called signal source refers to a device that generates an excitation signal. When the antenna assembly is used to receive electromagnetic wave signals, the first signal source 112 generates a first excitation signal, and the first excitation signal is loaded to the first connection point 1112, so that the first radiator 111 radiates electromagnetic wave signals.

The antenna assembly is used to support the transmission and reception of electromagnetic wave signals in the first frequency band, the second frequency band and the third frequency band, the first frequency band is the LB (low frequency) frequency band, the second frequency band is the GPS-L5 frequency band, and the second frequency band is the GPS-L5 frequency band. The three frequency bands are MHB (medium high frequency) and/or UHB (ultra high frequency) frequency bands. The antenna assembly has multiple resonance modes, wherein: one resonance mode is used to support the transmission and reception of electromagnetic wave signals in the first frequency band; one resonance mode is used to support the transmission and reception of electromagnetic wave signals in the second frequency band; at least one The resonance mode is used to support the sending and receiving of electromagnetic wave signals in the third frequency band.

With the antenna assembly of this embodiment, by arranging the first radiator on one side and setting multiple resonance modes, the antenna assembly can realize the coverage of the LB (low frequency) frequency band, the GPS-L5 frequency band, and the MHB (medium and high frequency band). ) or UHB (Ultra High Frequency) band coverage.

The above-mentioned LB (Lower Band) frequency band refers to the frequency band below 1000MHz. The resonant frequency of the above-mentioned GPS-L5 frequency band may be 1176MHz, where GPS means positioning, including but not limited to Global Positioning System (Global Positioning System, GPS) positioning, Beidou positioning, GLONASS positioning, GALILEO positioning, etc. The above-mentioned MHB (Middle High Band) refers to the LTE MHB frequency band, and its frequency range is: 1000MHz-3000MHz.

In an exemplary embodiment, the antenna assembly has a first resonant mode, a second resonant mode, and a third resonant mode, wherein:

The first resonance mode is used to support the sending and receiving of electromagnetic wave signals in the LB frequency band;

The second resonance mode is used to support the transmitting and receiving of electromagnetic wave signals in the GPS-L5 frequency band;

The third resonance mode is used to support the transceiving of electromagnetic wave signals in the MHB frequency band. MHB frequency bands include but are not limited to any of the following: WIFI 2.4G frequency band, B3 frequency band, B1 frequency band, B7 frequency band, B40 frequency band, B41 frequency band, B66 frequency band.

Exemplarily, the first resonance mode may be a quarter-wavelength mode from the first ground terminal to the first free terminal; the second resonance mode may be a quarter-wavelength mode from the first signal source to the first free terminal mode; the third resonant mode may be a three-quarter wavelength mode from the first ground terminal to the first free terminal or from the first free terminal to the first ground terminal.

As shown in FIG. 2, the first radiator 111 includes a first branch 111a and a second branch 111b connected by bending, and the extension direction of the first branch 111a is the same as that of the bottom edge 23, that is, the first direction D1 in the figure. , the extension direction of the second branch 111b is the same as the extension direction of the first side 22, that is, the second direction D2 in the figure, the direction D1 and the direction D2 are perpendicular to each other, and the connection point between one end of the second branch 111b and one end of the first branch 111a is the bending point. The length of the first branch 111a is smaller than that of the second branch 111b. An end of the first branch 111 a away from the second branch 111 b is a first grounding end 1111 . The second branch 111b has a first connection point 1112 , and the end of the second branch 111b away from the first branch 111a is a first free end 1113 . It can be seen from FIG. 2 that in this embodiment, the first antenna 11 is an antenna with an inverted-F structure.

In an exemplary embodiment, the total length of the first branch 111a and the second branch 111b may be 1/4 of the wavelength corresponding to the center frequency of the first resonance mode, and the first connection point 1112 to the second branch The length of the first free end 1113 may be 1/4 of the wavelength corresponding to the central frequency of the second resonance mode.

3A is a schematic diagram of the first antenna (antenna assembly) in the first resonance mode of the embodiment of the disclosure, and FIG. 3B is a schematic diagram of the first antenna in the second resonance mode of the embodiment of the disclosure; FIG. 3C is a schematic diagram of the first antenna in the second resonance mode of the embodiment of the disclosure. Schematic diagram of the triple resonance mode. As shown in FIG. 3A, the first antenna 11 includes a first resonant mode. When the first antenna resonates in the first resonant mode, the current on the first radiator 111 flows from the first ground terminal 1111 through the first connection point 1112, The first free end 1113 of the flow direction. That is, the first resonance mode is when the first antenna works in the fundamental mode of the first radiator 111 from the first ground end 1111 to the first free end 1113 . As shown in FIG. 3B , the first antenna 11 includes a second resonant mode. When the first antenna resonates in the second resonant mode, the current on the first antenna 11 flows from the first signal source 112 through the first connection point 1112 to the second resonant mode. A free end 1113. That is, the second resonant mode is when the first antenna works in the fundamental mode of the first radiator 111 from the first signal source 112 to the first free end 1113 through the first connection point 1112 . As shown in FIG. 3C, the first antenna 11 includes a third resonant mode. When the first antenna resonates in the third resonant mode, the current on the first radiator 111 includes a first current I1 and a second current I2. The first current I1 flows to the first free terminal 1113 through the first ground terminal 1111 , and the second current I2 flows to the first ground terminal 1111 through the first free terminal 1113 . That is, the third resonant mode is that the first antenna works on the first radiator from the first ground end 1111 to the first free end 1113, and from the first free end 1113 to the first ground The high-order modulus of terminal 1111.

FIG. 4 is a schematic diagram of return loss (RL) curves of the first antenna 11 at different frequencies. The antenna assembly shown in Figure 2, the first antenna 11 is used to send and receive electromagnetic wave signals in the LB frequency band, electromagnetic wave signals in the GPS-L5 frequency band and electromagnetic wave signals in the LTE MHB frequency band. The so-called RL curve refers to the return loss curve, which is called Return Loss in English, or RL for short. In this schematic diagram, the abscissa is frequency, and the unit is MHz; the ordinate is RL, and the unit is dB. The curve in this schematic diagram is the RL curve of the first antenna 11 . It can be seen from the curve that the first antenna 11 has three modes: the first resonance mode (mode 1 in the figure), the second resonance mode (mode 2 in the figure), and the third resonance mode (mode 3 in the figure). The working frequency band of the antenna 11 covers 600MHz-3000MHz; that is, it supports electromagnetic wave signals in the LB frequency band, electromagnetic wave signals in the GPS-L5 frequency band, and electromagnetic wave signals in the LTE MHB frequency bands such as WIFI 2.4G, B3, B1, B7, B40, B41, and B66. . Among them, the first resonance mode supports the LB frequency band, the second resonance mode supports the GPS-L5 frequency band, and the third resonance mode supports the LTE MHB frequency band.

In an exemplary embodiment, the first antenna 11 can adjust the frequency coverage of the first antenna 11 by adjusting the central operating frequency of the first resonance mode and the second resonance mode, so that the first antenna 11 can support low-frequency range All the frequency bands used by 4G-LTE and 5G-NR, or enable the first antenna 11 to support part of the frequency bands used by 4G-LTE and 5G-NR in the low frequency range and the frequency band of GPS L5. As shown in Figure 4, the antenna assembly has three resonant modes of the first resonant mode (mode 1 in the figure), the second resonant mode (mode 2 in the figure) and the third resonant mode (mode 3 in the figure). The working frequency band covers 600MHz-3000MHz; that is, it can support electromagnetic wave signals in the LB frequency band, electromagnetic wave signals in the GPS-L5 frequency band and electromagnetic wave signals in the LTE MHB frequency band. Among them, the first resonance mode supports the LB frequency band, the second resonance mode supports the GPS-L5 frequency band, and the third resonance mode supports the LTE MHB frequency band.

In an exemplary embodiment, the length from the first signal source 112 to the end of the first free end 1113 may be 1/4 of the wavelength corresponding to the center frequency of the first resonance mode (for example, 720MHz), and the first branch 1111 and the second branch 1112 The total length of can be 1/4 of the wavelength corresponding to the center frequency of the second resonance mode (for example, 1176MHz). Those skilled in the art can understand that when the length of the antenna is 1/4 of the wavelength of the radio signal, the transmission and reception conversion efficiency of the antenna is the highest. In this way, by setting the lengths of the first branch 1111 and the second branch 1112, the first antenna 11 can have good efficiency in both the first resonance mode and the second resonance mode, and achieve ultra-wideband coverage, so that it can cover at the same time All the frequency bands used by 4G-LTE and 5G-NR in the low frequency range enable the mobile terminal 100 to realize low, medium and high frequency dual connectivity in the full frequency band, or enable the mobile terminal 100 to realize carrier aggregation in the full frequency band.

In the antenna assembly of this embodiment, the first radiator 111 is arranged on one side, and the first connection point 1112 is located between the first ground end 1111 and the first free end 1113 and adjacent to the first A ground terminal 1111, and multiple resonance modes are set, so that the antenna component can cover any frequency band in the full frequency range of 4G and 5G, or can cover the 4G and 5G low frequency range frequency band, GPS L5 frequency band, and 4G and 5G mid-high frequency end .

It should be noted that the full-band 4G LTE low-frequency and 5G NR low-frequency dual connection means that in the non-independent networking mode, when the EN-DC mode is used, the frequency band that 4G LTE can use can be any frequency band in the low frequency , the frequency band that 5G NR can use is any frequency band in the low frequency, and the frequency band used by 4G LTE is different from that used by 5G NR.

In the ENDC mode of this embodiment, the antenna assembly can support receiving and/or sending signals in two frequency bands at the same time. Taking 4G LTE and 5G NR dual connectivity as an example, for example, 4G LTE uses the frequency band B20, and its uplink frequency range f1 is 832-862MHz, the downlink frequency range f2 is 791-821MHz. The frequency band used by 5G NR is N28, the uplink frequency range f3 is 703-748MHz, and the downlink frequency range f4 is 758-803MHz. In the B20 and N28 modes, the antenna assembly can support both the signal reception and transmission of the B20 and the signal reception and transmission of the N28. It can be understood that since the current 4G LTE or 5G NR uses low-frequency communication, the frequency distribution of the frequency band used is between 700-900MHz, and in the embodiment of the present disclosure, the covered frequency range is 600-3000MHz, so the full frequency band can be realized. 4G low frequency and 5G low frequency dual connection. In addition, MHB dual connectivity is also supported.

Carrier aggregation means that the frequency band used by the LTE-A system is formed by the aggregation of two or more LTE carrier components (Component Carrier, CC) and conforms to the frequency bandwidth of LTE-A related technical specifications. It can be understood that the low-frequency carrier aggregation means that the frequency band supported by the carrier aggregation is a low-frequency frequency band, that is, the frequency range supported by the low-frequency carrier aggregation is within the frequency range supported by the antenna assembly in the embodiment of the present disclosure, and the low-frequency carrier aggregation can be Including 4G low frequency carrier aggregation and 5G low frequency carrier aggregation.

In an exemplary embodiment, the first antenna may be located on any side of the mobile terminal, and the distance between the first free end of the first antenna and the top side is smaller than the distance between the first ground end and the top side. The distance from the top edge, for example, the first antenna is located on the lower left side when the mobile terminal faces the user, that is, the position where the first side 22 is adjacent to the bottom edge 23 can improve the efficiency of the upper hemisphere of the GPS-L5. In other embodiments, the first antenna can be located at any short side and adjacent side. For example, the first antenna 11 can be arranged at the position of the second side 24 adjacent to the bottom side 23 as shown in FIG. 2 (bottom right Side), or set at the first side 22 adjacent to the top edge 21 position (upper left side) in Figure 2, or set at the second side edge 24 adjacent to the top edge 21 position (upper right side) in Figure 2, this The disclosure places no limitation on the position of the first antenna 11 .

In another exemplary embodiment, the antenna assembly may have a first resonant mode, a second resonant mode, a fourth resonant mode, and a fifth resonant mode, wherein:

The fourth resonance mode is used to support the transmission and reception of electromagnetic wave signals in the fourth frequency band; the fifth resonance mode is used to support the transmission and reception of electromagnetic wave signals in the fifth frequency band; the fourth frequency band and the fifth frequency band jointly cover the MHB frequency band; or

The fourth resonant mode is used to support the transceiving of electromagnetic wave signals in the MHB frequency band; the fifth resonant mode is used to support the transceiving of electromagnetic wave signals in the UHB frequency band.

In an exemplary embodiment, the above-mentioned first, second, fourth and fifth resonance modes may be, for example:

The first resonant mode is a quarter-wavelength mode from the first ground terminal to the first free terminal;

The second resonant mode is a quarter-wavelength mode from the first signal source to the first free end;

When the first antenna resonates in the fourth resonance mode, the current on the first radiator includes a first sub-current and a second sub-current, and the first sub-current flows from the first ground terminal to the first sub-current. a free end, the second sub-current flows from the first free end to the first ground end; when the second antenna resonates in the fourth resonant mode, the current on the second radiator is driven by the second the ground terminal flows to the second free terminal;

When the first antenna resonates in the fifth resonance mode, the current on the first radiator includes a first sub-current and a second sub-current, and the first sub-current flows from the first ground terminal to the first sub-current. a free end, the second sub-current flows from the first free end to the first ground end; when the second antenna resonates in the fifth resonant mode, the current on the second radiator is driven by the second The free end flows to the second ground end.

FIG. 5 is a schematic diagram of an antenna assembly provided by another embodiment of the present disclosure. In this embodiment, the antenna assembly can realize four resonance modes. In this embodiment, the antenna assembly includes a first antenna 11 and a second antenna 12 adjacent to the first antenna 11 . The first antenna 11 may be the same as the embodiment shown in FIG. 2 , including a first radiator 111 and a first signal source 112. One end of the first radiator 111 is a first ground terminal 1111, and the other end is a first free terminal 1113. The first radiator 111 further includes a first connection point 1112, the first signal source 112 is electrically connected to the first connection point 1112, and the first connection point 1112 is located at the first ground end 1111 and the first free end 1113 between and adjacent to the first ground terminal 1111 . The second antenna 12 includes a second radiator 121, the second radiator 121 is spaced apart from the first radiator 111 and coupled to each other, and the end of the second radiator 121 away from the first radiator 111 is The second ground end 1211, the end of the second radiator 121 adjacent to the first radiator 111 is a second free end 1212, the first radiator 111 and the second radiator 121 are used to support the Transmitting and receiving electromagnetic wave signals of the first frequency band, the second frequency band and the third frequency band. When the first antenna transmits and receives electromagnetic wave signals, the second radiator acts as a parasitic radiator of the first antenna.

In the antenna assembly provided in this embodiment, the second radiator 121 is spaced apart from the first radiator 111 and coupled to each other, that is, the first radiator 111 and the second radiator 121 have the same aperture, because The coupling effect of the first radiator 111 and the second radiator 121, the first antenna 11 not only uses the first radiator 111 to send and receive electromagnetic wave signals, but also uses the second radiator 121 to send and receive electromagnetic waves signal, so that the first antenna 11 can work in a wider frequency band. Similarly, when the second antenna 12 is working, not only the second radiator 121 can be used to send and receive electromagnetic wave signals, but also the first radiator 111 can be used to send and receive electromagnetic wave signals, so that the second antenna 12 can work in a wider range. frequency band. In addition, since the first antenna 11 can use not only the first radiator 111 but also the second radiator 121 to send and receive electromagnetic wave signals when working, the second antenna 12 can not only use the second radiator 121 but also use the Therefore, the first radiator 111 realizes the multiplexing of the radiators in the antenna assembly, and also realizes the spatial multiplexing, so it is beneficial to reduce the size of the antenna assembly. It can be seen from the above analysis that the size of the antenna assembly is small, and when the antenna assembly is applied to a mobile terminal, it is convenient to be stacked with other devices in the mobile terminal. In addition, due to the small size of the antenna assembly, when the antenna assembly is applied to a mobile terminal, more antenna assemblies can be provided in the mobile terminal.

In this embodiment, the first radiator may be the same as the embodiment shown in FIG. 2 , including a connected first branch 111a and a second branch 111b, and the second branch 111b is bent and extended from one end of the first branch 111a. The other end of the first branch 111a is the first grounding end 1111, the other end of the second branch 111b is the first free end 1113, the first connection point 1112 is located at the second branch 111b, and the length of the first branch 111a is less than The length of the second branch 111b, the total length of the first branch 111a and the second branch 111b is 1/4 of the wavelength corresponding to the center frequency of the first resonance mode, the first connection point 1112 to the second branch 111b The length of the free end 1113 is 1/4 of the wavelength corresponding to the central frequency of the second resonance mode.

In an exemplary embodiment, as shown in FIG. 5 , the second radiator 121 includes a third branch 121a and a fourth branch 121b that are bent and connected, and the third branch 121a extends along the direction D1, that is, the extending direction is the same as that of the first The extending direction of the branches 111a is the same, the fourth branch 121b extends along the D2 direction, that is, the extension direction is the same as that of the second branch 111b, and the connection point between one end of the third branch 121a and one end of the fourth branch 121b is the first The bending point of the third branch 121a and the fourth branch 121b. The length of the third branch 121a is smaller than the length of the fourth branch 121b. An end of the third branch 121 a away from the fourth branch 121 b is the second grounding end 1211 . The end of the fourth branch 121b away from the third branch 121a is the second free end 1212, the first free end 1113 and the second free end 1212 are spaced apart, that is, there is a gap between the first free end 1113 and the second free end 1212 d.

The dimension d of the gap between the first radiator 111 and the second radiator 121 may be: 0.5mm≤d≤2.0mm. It can be understood that, in this implementation manner, only one form of the antenna assembly shown in FIG. 5 is used as an example for illustration, which should not be construed as a limitation to the present disclosure. The gap size d between the first radiator 111 and the second radiator 121 is selected within the above range, so as to ensure a good coupling effect between the first radiator 111 and the second radiator 121 . Further optionally, 0.5mm≤d≤1.5mm, so that the coupling effect between the first radiator 111 and the second radiator 121 is better.

As mentioned above, in addition to the first resonant mode and the second resonant mode, the first antenna 11 and the second antenna 12 also include the fourth resonant mode and the fifth resonant mode, because after adding the second antenna 12, The original third resonant mode is loaded, and the fourth resonant mode and the fifth resonant mode are formed after loading. FIG. 6A is a schematic diagram of an antenna assembly in a fourth resonance mode according to an embodiment of the present disclosure, and FIG. 6B is a schematic diagram of an antenna assembly in a fifth resonance mode according to an embodiment of the present disclosure. As shown in FIG. 6A, when the first antenna 11 and the second antenna 12 work in the fourth resonant mode, the current on the first radiator 111 includes the first sub-current L1 and the second sub-current L2, and the first sub-current L1 starts from The first ground terminal 1111 flows to the first free terminal 1113, the second sub-current L2 flows from the first free terminal 1113 of the second branch 111b to the first ground terminal 1111, and the current on the second radiator 121 passes through the second ground terminal 1211 The third branch 121a and the fourth branch 121b flow to the second free end 1212 of the fourth branch 121b. As shown in FIG. 6B, when the first antenna 11 and the second antenna 12 work in the fifth resonant mode, the current on the first radiator 111 includes a third sub-current L3 and a fourth sub-current L4, and the third sub-current L3 starts from The first ground end 1111 flows to the first free end 1113, the fourth sub-current L4 flows from the first free end 1113 of the second branch 111b to the first ground end 1111, and the current on the second radiator 121 flows from the first free end 1113 of the fourth branch 111b. The two free ends 1212 flow to the second ground end 1211 through the fourth branch 121b and the third branch 121a. Since the efficiency of the same-direction current is higher, the efficiency of the fourth resonance mode is higher than that of the fifth resonance mode.

In an exemplary embodiment, the total length of the third branch 121a and the fourth branch 121b is 1/4 of the wavelength corresponding to the center frequency of the fifth resonance mode.

FIG. 7 is a schematic diagram of RL curves of the first antenna 11 and the second antenna 12 in the antenna assembly shown in FIG. 5 . The antenna assembly shown in Figure 5, the first antenna 11 and the second antenna 12 are jointly used to send and receive electromagnetic wave signals in the LB frequency band, electromagnetic wave signals in the GPS-L5 frequency band and electromagnetic wave signals in the LTE MHB frequency band, wherein the MHB frequency band includes but not Limited to: electromagnetic wave signals of WIFI 2.4G frequency band, B3 frequency band, B1 frequency band, B7 frequency band, B40 frequency band, B41 frequency band, and B66 frequency band. As can be seen from the curve in Figure 7, the antenna assembly has a first resonant mode (mode 1 in the figure), a second resonant mode (mode 2 in the figure), a fourth resonant mode (mode 4 in the figure) and a fifth resonant mode ( Mode 5) in the figure has four resonance modes, and the working frequency band of the antenna assembly covers 600MHz-3000MHz; that is, it supports electromagnetic wave signals in the LB frequency band, electromagnetic wave signals in the GPS-L5 frequency band, and electromagnetic wave signals in the LTE MHB frequency band. Among them, the first resonance mode supports the LB frequency band, the second resonance mode supports the GPS-L5 frequency band, and the fourth resonance mode and the fifth resonance mode both support the LTE MHB frequency band. It can be seen from FIG. 7 that, compared with the third resonance mode, the fourth resonance mode and the fifth resonance mode can better cover the MHB.

It can be seen that with the antenna structure shown in Figure 5, the supported frequency bands can include: LB+GPSL5+MHB, where MHB includes but not limited to the following frequency bands: WIFI2.4G, B3, B1, B7, B40, B41, B66, etc. For example, support: LB+GPS L5+WIFI2.4G, or LB+GPS L5+B40, or LB+GPS L5+B41, or LB+GPS L5+B3, or LB+GPS L5+B1, or LB+GPS L5+B7 , or LB+GPS L5+B66.

It can be seen that, with the antenna structure shown in FIG. 5 , by adding the second antenna 12 as a parasitic unit, the mid-high frequency bandwidth that the antenna component can support can be increased. The MHB can be better covered by the fourth resonance mode and the fifth resonance mode. Comparing Fig. 6A with Fig. 6B, in Fig. 6A, that is, in the fourth resonance mode, the current on the second radiator 121 is in the same direction as the fourth sub-current I4; in Fig. 6B, that is, in the fifth resonance mode, the second radiation The current on the body 121 is opposite to the sixth sub-current I6, so in comparison, the efficiency of mode 4 is higher than that of the fifth resonance mode.

In an exemplary embodiment, when the antenna assembly including the first antenna 11 and the second antenna 12 is located on the lower left side of the entire mobile terminal, the upper hemisphere efficiency of GPS-L5 is significantly improved and can reach 78%, that is, the antenna radiation The energy in the upper hemisphere accounts for 78% of the total radiant energy, which is less than 50% of the traditional solution, that is, it is more than 20% higher than the traditional solution in other places. As shown in Figure 8, the darker the color in the figure, the stronger the energy.

In an exemplary embodiment, when the length of the second antenna 12 is reduced, that is, after the total length of the second radiator is adjusted, the above-mentioned fifth resonance mode can also be used to cover frequency bands above 3G, including but not limited to: N77, For N78, N79, WIFI 5G, WIFI 6G and other UHB (Ultra High Frequency) frequency bands with a frequency range of 3000MHz-10000Mhz, the total length of the second radiator can be adjusted to 1/4 of the wavelength corresponding to the center frequency of the frequency band to be supported. FIG. 9 is a schematic diagram of return loss curves of the antenna assembly at different frequencies when the fifth resonance mode covers frequency bands above 3G. In this embodiment, the antenna assembly can be used to send and receive electromagnetic wave signals in the LB frequency band, electromagnetic wave signals in the GPS-L5 frequency band, electromagnetic wave signals in the LTE MHB frequency band and UHB frequency band.

In the embodiments of the present disclosure, the materials used for the first antenna and the second antenna are not limited, for example, they may be polyimide film (Polyimide, PI), liquid crystal polymer (Liquid Crystal Polymer, LCP) or modified polyimide ( Modified Polyimide, MPI) etc.

An embodiment of the present disclosure also provides a mobile terminal including the above antenna assembly. The wireless communication devices involved in the embodiments of the present disclosure may include various handheld devices with wireless communication functions, vehicle-mounted devices, virtual reality/augmented reality devices, wireless headsets, smart home devices, wearable devices, computing devices, or connected to wireless Other processing equipment of the modem, and various forms of user equipment (User Equipment, UE) (for example, mobile phone), mobile station (Mobile Station, MS), terminal equipment (terminal device) and so on.

Among them, the smart home device can be at least one of the following: smart watch, smart speaker, smart TV, smart refrigerator, smart washing machine, smart lamp, smart toilet, smart rice cooker, smart clothes hanger, smart massage chair, smart furniture, smart sensor , smart doors and windows, smart routers, smart gateways, smart switch panels, etc., are not limited here.

In the description of the embodiments of the present disclosure, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a A detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediary, and it may be an internal communication between two components. Those of ordinary skill in the art can understand the meanings of the above terms in the present disclosure according to the situation.

The above examples only express several implementations of the present disclosure, and the description thereof is relatively detailed, but should not be construed as limiting the patent scope of the present disclosure. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present disclosure, and these all belong to the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be determined by the appended claims.

Those of ordinary skill in the art can understand that all or some of the steps in the methods disclosed above, the functional modules/units in the system, and the device can be implemented as software, firmware, hardware, and an appropriate combination thereof. In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be composed of several physical components. Components cooperate to execute. Some or all of the components may be implemented as software executed by a processor, such as a digital signal processor or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). As known to those of ordinary skill in the art, the term computer storage media includes both volatile and nonvolatile media implemented in any method or technology for storage of information, such as computer readable instructions, data structures, program modules, or other data. permanent, removable and non-removable media. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic cartridges, tape, magnetic disk storage or other magnetic storage devices, or can Any other medium used to store desired information and which can be accessed by a computer. In addition, as is well known to those of ordinary skill in the art, communication media typically embodies computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media .

Claims

An antenna assembly, comprising a first radiator and a first signal source, one end of the first radiator is a first ground terminal, and the other end is a first free end, and the first radiator also includes a first connection point , the first signal source is electrically connected to the first connection point, and the first connection point is located between the first ground terminal and the first free terminal and adjacent to the first ground terminal; The antenna assembly is used to support the transmission and reception of electromagnetic wave signals in the first frequency band, the second frequency band and the third frequency band, the first frequency band is the LB frequency band, the second frequency band is the GPS-L5 frequency band, and the third frequency band is the MHB and / or UHB band;

The antenna assembly has multiple resonance modes, wherein: one resonance mode is used to support the transmission and reception of electromagnetic wave signals in the first frequency band; one resonance mode is used to support the transmission and reception of electromagnetic wave signals in the second frequency band; at least one The resonance mode is used to support the sending and receiving of electromagnetic wave signals in the third frequency band.
The antenna assembly of claim 1, wherein the antenna assembly has multiple resonance modes, comprising: the antenna assembly has:

The first resonance mode is used to support the sending and receiving of electromagnetic wave signals in the LB frequency band;

The second resonance mode is used to support the transmitting and receiving of electromagnetic wave signals in the GPS-L5 frequency band;

The third resonance mode is used to support the transceiving of electromagnetic wave signals in the MHB frequency band.
The antenna assembly of claim 2, wherein,

The first resonant mode is a quarter-wavelength mode from the first ground terminal to the first free terminal;

The second resonant mode is a quarter-wavelength mode from the first signal source to the first free end;

The third resonant mode is a three-quarter wavelength mode from the first ground terminal to the first free terminal or from the first free terminal to the first ground terminal.
An antenna assembly according to claim 2 or 3, wherein,

The first radiator includes a connected first branch and a second branch, the second branch bends and extends from one end of the first branch, and the other end of the first branch is the second branch. A grounding end, the other end of the second branch is the first free end, the first connection point is located at the second branch, and the length of the first branch is less than the length of the second branch , the total length of the first branch and the second branch is 1/4 of the wavelength corresponding to the center frequency of the first resonance mode, and the length from the first connection point to the first free end of the second branch is the second resonance mode The center frequency corresponds to 1/4 of the wavelength.
The antenna assembly according to claim 1, wherein,

The antenna assembly further includes a second radiator, the second radiator is spaced apart from the first radiator and coupled to each other, and the end of the second radiator away from the first radiator is a second ground terminal , the end of the second radiator adjacent to the first radiator is a second free end, and the first radiator and the second radiator are jointly used to support the first frequency band, the second frequency band and the third frequency band The transmission and reception of electromagnetic wave signals in the frequency band.
The antenna assembly of claim 5, wherein,

The dimension d of the interval between the first radiator and the second radiator is 0.5mm≤d≤2.0mm or 0.5mm≤d≤1.5mm.
The antenna assembly according to claim 5, wherein the antenna assembly has multiple resonance modes, comprising: the antenna assembly has a first resonance mode, a second resonance mode, a fourth resonance mode and a fifth resonance mode, wherein :

The first resonance mode is used to support the sending and receiving of electromagnetic wave signals in the LB frequency band;

The second resonance mode is used to support the transmitting and receiving of electromagnetic wave signals in the GPS-L5 frequency band;

The fourth resonance mode is used to support the transmission and reception of electromagnetic wave signals in the fourth frequency band; the fifth resonance mode is used to support the transmission and reception of electromagnetic wave signals in the fifth frequency band; the fourth frequency band and the fifth frequency band jointly cover the MHB frequency band; or, The fourth resonant mode is used to support the transceiving of electromagnetic wave signals in the MHB frequency band; the fifth resonant mode is used to support the transceiving of electromagnetic wave signals in the UHB frequency band.
The antenna assembly of claim 7, wherein,

The first resonant mode is a quarter-wavelength mode from the first ground terminal to the first free terminal;

The second resonance mode is a quarter-wavelength mode from the first signal source to the first free end.
The antenna assembly of claim 7, wherein,

When the antenna component resonates in the fourth resonance mode, the current on the first radiator includes a first sub-current and a second sub-current, and the first sub-current flows from the first ground terminal to the first sub-current. The second sub-current flows from the first free end to the first ground end; the current on the second radiator flows from the second ground end to the second free end.
The antenna assembly of claim 7, wherein,

When the antenna component resonates in the fifth resonance mode, the current on the first radiator includes a third sub-current and a fourth sub-current, and the third sub-current flows from the first ground terminal to the first The fourth sub-current flows from the first free end to the first ground end; the current on the second radiator flows from the second free end to the second ground end.
The antenna assembly of claim 7, wherein,

The fifth resonance mode is also used to support frequency bands above 3G.
An antenna assembly according to any one of claims 6-11, wherein,

The first radiator includes a connected first branch and a second branch, the second branch bends and extends from one end of the first branch, and the other end of the first branch is the second branch. A grounding end, the other end of the second branch is the first free end, the first connection point is located at the second branch, and the length of the first branch is less than the length of the second branch , the total length of the first branch and the second branch is 1/4 of the wavelength corresponding to the center frequency of the first resonance mode, and the length from the first connection point to the first free end of the second branch is the second resonance mode The center frequency corresponds to 1/4 of the wavelength;

The second radiator includes a connected third branch and a fourth branch, the third branch bends and extends from one end of the fourth branch, and the other end of the fourth branch is the second free branch. end, the other end of the third branch is the second grounding end, the length of the third branch is less than the length of the fourth branch, and the total length of the third branch and the fourth branch is the fifth The center frequency of the resonance mode corresponds to 1/4 of the wavelength.
A mobile terminal, comprising the antenna assembly according to any one of claims 1-12.
The mobile terminal according to claim 13, wherein the mobile terminal comprises a top side, a first side, a bottom side and a second side connected end to end in sequence, the top side is opposite to the bottom side and arranged at intervals , the first side is opposite to the second side and arranged at intervals, the first side is respectively connected to the top side and the bottom side by bending, and the second side is respectively connected to the The top edge and the bottom edge are connected by bending, the antenna assembly is located on any side of the mobile terminal, and the distance between the first free end of the antenna assembly and the top edge is smaller than the first ground end The distance from the top edge.