Antenna assembly and electronic equipment

Abstract

The invention provides an antenna assembly and electronic equipment. The antenna assembly comprises a first radiator and a first feed source, the first feed source is connected with a first feeding point located on the first radiator, and the first feed source excites the first radiator to resonate in a first target frequency band; the second feed source and the adjusting circuit are respectively connected with a second feeding point and a third feeding point which are positioned on the second radiating body, and the second radiating body is coupled with the first radiating body through a gap between the second free end and the first free end; the second feed source excites the second radiator and / or the first radiator to resonate in a second target frequency band, and the adjusting circuit is used for adjusting and controlling the path length of the resonance current corresponding to the second target frequency band, and the path of the resonance current corresponding to the second target frequency band is different from the path of the resonance current corresponding to the first target frequency band. The radiation efficiency of the first target frequency band and the second target frequency band is effectively improved, so that the communication performance is improved.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and more specifically, to an antenna assembly and an electronic device. Background Art

[0002] With the continuous development of communication technology, multiple antennas need to be deployed in electronic devices such as mobile phones. With the miniaturization of electronic devices such as mobile phones and the powerful communication functions, how to deploy multiple antennas in a small space has become a key issue.

[0003] The related art proposes that multiple antennas can be set as a co-existing antenna assembly to reduce the space occupied by the antennas while achieving multifunctional wireless communication. However, the communication performance of the antenna assembly in the related art needs to be further improved. Summary of the invention

[0004] The present application provides an antenna assembly and an electronic device. Various aspects involved in the embodiments of the present application are introduced below.

[0005] In a first aspect, an antenna assembly is provided, comprising: a first antenna unit, comprising a first radiator and a first feed source, the first radiator having a first ground end, a first free end and a first feeding point, the first feeding point being located between the first ground end and the first free end, the first feed source being connected to the first feeding point, the first feed source exciting the first radiator to resonate in a first target frequency band; a second antenna unit, comprising a second radiator, a second feed source and an adjustment circuit, the second radiator having a second ground end and a second free end, the second free end and the first free end being spaced apart to form a gap, the second radiator and the first free end being spaced apart to form a gap, The first radiator is coupled through the gap; wherein the second radiator also has a second feeding point and a third feeding point, the second feeding point and the third feeding point are located between the second free end and the second ground end, the second feed source is connected to the second feeding point, the adjustment circuit is connected to the third feeding point, the second feed source excites the second radiator and / or the first radiator to resonate in a second target frequency band, the adjustment circuit is used to regulate the path length of the resonant current corresponding to the second target frequency band, and the path of the resonant current corresponding to the first target frequency band is different from the path of the resonant current corresponding to the second target frequency band.

[0006] According to a second aspect, an electronic device is provided, wherein the electronic device comprises the antenna assembly as described in the first aspect.

[0007] The embodiment of the present application provides an antenna assembly, which includes a first antenna unit and a second antenna unit, the first antenna unit includes a first radiator and a first feed source, the first feed source is connected to a first feed point located between a first ground end and a first free end of the first radiator, and the first feed source excites the first radiator to resonate in a first target frequency band; the second antenna unit includes a second radiator, a second feed source, and an adjustment circuit, the second feed source and the adjustment circuit are respectively connected to a second feed point and a third feed point located between a second free end and a second ground end of the second radiator, the second radiator is coupled to the first radiator through a gap between the second free end and the first free end, the second feed source excites the second radiator and / or the first radiator to resonate in a second target frequency band, and the adjustment circuit is used to adjust the path length of the resonant current corresponding to the second target frequency band, and the path of the resonant current corresponding to the first target frequency band is different from the path of the resonant current corresponding to the second target frequency band. The antenna assembly is not only small in size and occupies a small space, but also can effectively improve the radiation efficiency of the first target frequency band and the second target frequency band, thereby improving communication performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the structure of an antenna assembly provided in one embodiment of the present application.

[0009] Figure 2 yes Figure 1 Figure 2 is a graph of the S parameters of ANT1.

[0010] Figure 3(a) is Figure 1 Schematic diagram of one resonance mode of ANT1.

[0011] Figure 3(b) is Figure 1 Schematic diagram of another resonance mode of ANT1 in FIG.

[0012] Figure 3(c) is Figure 1 Schematic diagram of another resonance mode of ANT1 in FIG.

[0013] Figure 4 yes Figure 1 Figure 2 is a graph of the S parameters of ANT2.

[0014] Figure 5(a) is Figure 1 Schematic diagram of a resonant mode of ANT2.

[0015] Figure 5(b) is Figure 1 Schematic diagram of another resonance mode of ANT2 in FIG.

[0016] Figure 5(c) is Figure 1 Schematic diagram of another resonance mode of ANT2 in FIG.

[0017] Figure 5(d) is Figure 1Schematic diagram of another resonance mode of ANT2 in FIG.

[0018] Figure 5(e) is Figure 1 Schematic diagram of another resonance mode of ANT2 in FIG.

[0019] Figure 5(f) is Figure 1 Schematic diagram of another resonance mode of ANT2 in FIG.

[0020] Figure 5(g) is Figure 1 Schematic diagram of another resonance mode of ANT2 in FIG.

[0021] Figure 5(h) is Figure 1 Schematic diagram of another resonance mode of ANT2 in FIG.

[0022] Figure 6 yes Figure 1 The S parameter curve of ANT3 in.

[0023] Figure 7 It is a structural schematic diagram of an antenna assembly provided in yet another embodiment of the present application.

[0024] Figure 8 yes Figure 7 Graph of the S parameters of ANT1'.

[0025] Figure 9(a) is Figure 7 Schematic diagram of a resonance mode of ANT1'.

[0026] Figure 9(b) is Figure 7 Schematic diagram of another resonance mode of ANT1'.

[0027] Fig.10 yes Figure 7 The S-parameter curve of ANT2'.

[0028] Figure 11(a) is Figure 7 Schematic diagram of a resonance mode of ANT2'.

[0029] Figure 11(b) is Figure 7 Schematic diagram of another resonance mode of ANT2'.

[0030] Figure 11(c) is Figure 7 Schematic diagram of another resonance mode of ANT2'.

[0031] Figure 11(d) is Figure 7 Schematic diagram of another resonance mode of ANT2'.

[0032] Figure 11(e) is Figure 7 Schematic diagram of another resonance mode of ANT2'.

[0033] Fig.12 yes Figure 7 Graph of the S parameters of ANT3'.

[0034] Fig.13 yes Figure 7 Simulation diagram of the system radiation efficiency and total system efficiency of the antenna components.

[0035] Fig.14 It is a structural schematic diagram of an antenna assembly provided in yet another embodiment.

[0036] Fig.15 It is a schematic diagram of the structure of an electronic device provided in one embodiment of the present application.

[0037] Fig.16 It is a structural schematic diagram of an electronic device provided in yet another embodiment of the present application. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0039] With the development of electronic technology, electronic devices (such as smart phones, tablet computers, etc.) are becoming more and more popular in people's daily lives and their communication functions are becoming more and more powerful. For example, electronic devices need to have near-field communication functions, navigation functions, and far-field communication functions. Because different communication functions correspond to different communication frequency bands, and even under the same communication function, it can be subdivided into multiple communication frequency bands.

[0040] For example, the communication band of the near field communication function may include a Bluetooth communication band, a WIFI band, and an NFC communication band. The WIFI band may include a WIFI2.4G band and a WIFI5G band. The communication band of the navigation function may include a GPS-L1 band and a GPS-L5 band. The far field communication band includes a low band (Low band, LB), a middle high band (Middle highband, MHB) and an ultra high band (Ultra high band, UHB). Specifically, the far field communication band may include each band and a combination band of the NR band and the LTE band to meet the wireless communication of electronic devices under 2G, 3G, 4G, 5G or even 6G broadband. Among them, the UHB band may include the N78 band and the N77 band.

[0041] In view of the need for electronic devices to work in multiple frequency bands, a common approach is to set multiple antennas corresponding to the multiple frequency bands in the electronic device. However, setting up multiple antennas will take up a large space, which is not conducive to the development of miniaturization and portability of electronic devices. Therefore, there is an urgent need for a technology that can arrange multiple antennas in a smaller space to realize multiple wireless communication functions.

[0042] Related art proposes that a co-body antenna assembly can be used to realize the functions of multiple antennas. The radiator of the co-body antenna can realize the co-body of multiple different antenna modes, and different antenna modes can meet different communication functions. The co-body form can also reduce the space occupied by the antenna assembly.

[0043] However, how to configure the antenna assembly in a co-body form to cover more frequency bands and reduce the space occupied by the antenna assembly has become a technical problem that needs to be solved urgently.

[0044] As a feasible approach, Figure 1 As shown, the antenna assembly 10 can be configured to include a first antenna unit 11 and a second antenna unit 12. The first antenna unit 11 includes a first radiator 111 and a first feed source 112. The second antenna unit 12 includes a second radiator 121, a second feed source 122, and a third feed source 123. A gap 13 is formed between the first radiator 111 and the second radiator 121, and the first radiator 111 and the second radiator 121 are coupled through the gap 13 to realize that the first antenna unit 11 and the second antenna unit 12 are a common body antenna with a common aperture. In other words, the first radiator 111 and the second radiator 121 belong to the same radiator, and the one radiator has a gap 13 to divide the one radiator into the first radiator 111 and the second radiator 121. The first antenna unit 11 or the second antenna unit 12 formed as a common body antenna can not only use its own radiator when working, but also use the radiator on the opposite side. At the same time, in conjunction with the different radio frequency signals (also called feeding current or excitation current) received or transmitted by the first feed source 112 , the second feed source 122 , and the third feed source 123 , the antenna assembly 10 can achieve transmission of multi-band signals.

[0045] It should be noted that the coupling in the embodiment of the present application is "capacitive coupling". The so-called "capacitive coupling" means that an electric field is generated between two radiators, and the signal of one radiator can be transmitted to the other radiator through the electric field. Correspondingly, the signal of the other radiator can be transmitted to the one radiator through the electric field, so that the two radiators can achieve electrical signal conduction even when they are not in direct contact or not directly connected. For example, the second radiator 121 is coupled with the first radiator 111 through the gap 13, which means that the second radiator 121 and the first radiator 111 generate an electric field, and the signal of the second radiator 121 can be transmitted to the first radiator 111 through the electric field, so that the second radiator 121 and the first radiator 111 can achieve electrical signal conduction even when they are not in direct contact or not directly connected. Correspondingly, the first radiator 111 can also generate an electric field with the second radiator 121, and the signal of the first radiator 111 can be transmitted to the second radiator 121 through the electric field, so that the first radiator 111 and the second radiator 121 can achieve electrical signal conduction even if they are not in direct contact or direct connection.

[0046] Specifically, Figure 1 As shown, the first radiator 111 has a first ground terminal D, a first free terminal C and a first feeding point E. The first ground terminal D is located at an end of the first radiator 111 away from the second radiator 121 and the first ground terminal D is used to ground GND1. The first free terminal C is located at an end of the first radiator 111 close to the second radiator 121. The first feeding point E is located between the first ground terminal D and the first free terminal C, and the first feed source 112 is connected to the first feeding point E. The radio frequency signal received or transmitted by the first feed source 112 can excite the first radiator 111 and / or the second radiator 121 to resonate in the first target frequency band. The first feed source 112 corresponds to the antenna ANT1, and the antenna ANT1 has a resonance mode corresponding to the first target frequency band.

[0047] Optionally, a first matching circuit M1 may be provided between the first feed source 112 and the first feeding point E. The first matching circuit M1 is used to perform impedance matching on the excitation signal sent by the first feed source 112 to excite the first radiator 111 and / or the second radiator to resonate in the first target frequency band, so that the antenna ANT1 corresponding to the first feed source 112 has a preset S parameter. At the same time, the first matching circuit M1 is also used to filter the radio frequency signal received or transmitted by the first feed source 112.

[0048] Continue to see Figure 1The second radiator 121 has a second ground terminal H, a second free terminal I, a second feeding point F and a third feeding point G. The second ground terminal H is located at an end of the second radiator 121 away from the first radiator 111 and is connected to the ground GND2. The second free terminal I is located at an end of the second radiator 121 close to the first radiator 111 and there is the aforementioned gap 13 between the second free terminal I and the first free terminal C. The second feeding point F and the third feeding point G are located between the second ground terminal H and the second free terminal I.

[0049] The second feed source 122 is connected to the second feeding point F. The RF signal received or transmitted by the second feed source 122 can excite the first radiator 111 and / or the second radiator 121 to resonate in the second target frequency band. The second feed source 122 corresponds to the antenna ANT2, and the antenna ANT2 has a resonance mode corresponding to the second target frequency band.

[0050] Optionally, a second matching circuit M2 may be provided between the second feed source 122 and the second feeding point F, and the second matching circuit M2 is used to filter the radio frequency signal received or transmitted by the second feed source 122. The second matching circuit M2 is also used to perform impedance matching on the excitation signal sent by the second feed source 122 to excite the first radiator 111 and / or the second radiator to resonate in the second target frequency band, so that the antenna ANT2 corresponding to the second feed source 122 has a preset S parameter.

[0051] The RF signal received or transmitted by the first feed source 112 can excite the first radiator 111 and / or the second radiator 121 to resonate, which may include: the RF signal received or transmitted by the first feed source 112 only excites the first radiator 111 to resonate, and / or, the RF signal received or transmitted by the first feed source 112 only excites the second radiator 121 to parasitic resonance, and / or, the RF signal received or transmitted by the first feed source 112 excites the first radiator 111 to resonate and excites the second radiator 121 to parasitic resonance.

[0052] Similarly, the RF signal received or transmitted by the second feed source 122 can excite the first radiator 111 and / or the second radiator 121 to resonate, including: the RF signal received or transmitted by the second feed source 122 only excites the second radiator 121 to resonate, and / or, the RF signal received or transmitted by the second feed source 122 only excites the first radiator 111 to parasitic resonance, and / or, the RF signal received or transmitted by the second feed source 122 excites the second radiator 121 to resonate and excites the first radiator 111 to parasitic resonance.

[0053] Continue to see Figure 1The third feed source 123 is connected to the third feeding point G. The radio frequency signal received or transmitted by the third feed source 123 can excite the second radiator 121 to resonate in the third target frequency band. The third feed source 123 corresponds to the antenna ANT3, and the antenna ANT3 has a resonance mode corresponding to the third target frequency band.

[0054] Optionally, a third matching circuit M3 may be provided between the third feed source 123 and the third feeding point G, and the third matching circuit M3 is used to perform impedance matching on the excitation signal sent by the third feed source 123 to excite the second radiator 121 to resonate in the third target frequency band, so that the antenna ANT3 corresponding to the third feed source 123 has a preset S parameter. In addition, the third matching circuit M3 is also used to filter the radio frequency signal received or transmitted by the third feed source 123. .

[0055] In some embodiments, Figure 1 As shown, the first ground terminal D can be connected to the ground GND1 through the switch circuit M4. In other words, one end of the switch circuit M4 is connected to the first ground terminal D, and the other end is connected to the ground GND1. The switch circuit M4 is used to switch the radiation frequency band of the first radiator 111 and / or filter and ground the first radiator 111. In some embodiments, the switch circuit M4 can be connected to the mainboard.

[0056] The embodiment of the present application does not specifically limit the connection method between the first ground terminal D and the ground GND1 and the second ground terminal H and the ground GND2. For example, the connection method between the ground terminal D or H and the ground includes but is not limited to direct electrical connection (such as welding); or indirect electrical connection to the ground through a coaxial line, a microstrip line, a radio frequency line, a conductive spring, a conductive adhesive, an embedded metal, or a middle frame connection of an electronic device where the antenna assembly is installed.

[0057] In another embodiment, the antenna assembly 10 itself has a reference ground, also called a ground pole or ground. The specific form of the reference ground includes but is not limited to a metal conductive plate, a metal conductive layer formed inside a flexible circuit board, a hard circuit board, etc. When the antenna assembly 10 is disposed in an electronic device, the reference ground of the antenna assembly 10 is electrically connected to the reference ground of the electronic device. In other embodiments, the antenna assembly 10 itself does not have a reference ground, and the first ground terminal D of the antenna assembly 10 is electrically connected to the reference ground of the electronic device or the reference ground of the electronic device in the electronic device through direct electrical connection or through an indirect electrical connection through a conductive member.

[0058] The embodiment of the present application does not specifically limit the coverage of the first target frequency band, the second target frequency band, and the third target frequency band, and can be set as needed. As an example, the first target frequency band, the second target frequency band, and the third target frequency band can be superimposed together to cover the communication frequency band of the near field communication function, the far field communication frequency band, and the communication frequency band of the navigation function.

[0059] In some embodiments, the first target frequency band may include a first frequency band, a second frequency band, and a third frequency band. The first frequency band covers the GPS-L1 frequency band, which is a 1.575 GHZ frequency band. The second frequency band covers the WIFI2.4 frequency band, which is a 2.4-2.5 GHz frequency band. The third frequency band covers the 3G or 4G communication frequency band.

[0060] For example, Figure 2 As shown, the first frequency band can be represented by marked point 1, the frequency of marked point 1 is 1.5766 GHz, and the radiation efficiency is -8.0811 dB; the second frequency band can be represented by marked point 2, the frequency of marked point 2 is 2.4667 GHz, and the radiation efficiency is -9.9973 dB; the third frequency band can be represented by marked point 3, the frequency of marked point 3 is 2.9773 GHz, and the radiation efficiency is -15.904 dB.

[0061] Correspondingly, the antenna ANT1 has a first resonant mode, and the first resonant mode includes a first sub-resonant mode, a second sub-resonant mode, and a third sub-resonant mode that support the first frequency band, the second frequency band, and the third frequency band, respectively. Specifically, as shown by the dotted line in FIG3(a), the first sub-resonant mode is a 1 / 4 wavelength mode from the first ground terminal D to the slot 13. As shown by the dotted line in FIG3(b), the second sub-resonant mode is a 1 / 4 wavelength mode from the first feeding point E to the slot 13. As shown by the dotted line in FIG3(c), the third sub-resonant mode is a unidirectional current mode from the first feed source 112 to the second ground terminal GND2.

[0062] In some embodiments, the second target frequency band may include a fourth frequency band, a fifth frequency band, a sixth frequency band, and a seventh frequency band. Among them, the fourth frequency band covers the LTE communication frequency band, and the LTE communication frequency band includes the frequency band of 4G communication and communication broadband below 4G. The fifth frequency band covers the UHB frequency band, and the UHB frequency band may include the N78 frequency band, and the N78 frequency band is the 3.4-3.6GHz frequency band. The sixth frequency band covers the WIFI7 communication frequency band, and the WIFI7 communication frequency band is the 5.15-7.15GHz frequency band. The seventh frequency band covers the ultra-wideband (UltraWideband, UWB) communication frequency band, and the ultra-wideband communication frequency band is the frequency band of 6G communication and communication broadband below 6G.

[0063] For example, Figure 4 As shown, the fourth frequency band can be Figure 4 The marked points 1 and 2 in the figure indicate that the frequency of the marked point 1 is 2.3176 GHz and the radiation efficiency is -34.499 dB; the frequency of the marked point 2 is 2.9228 GHz and the radiation efficiency is -0.69303 dB. The fifth frequency band can be obtained by Figure 4The marked points 3 and 4 in the figure indicate that the frequency of the marked point 3 is 3.5317 GHz (that is, the N78 frequency band), and the radiation efficiency is -8.6082 dB; the frequency of the marked point 4 is 4.4621 GHz, and the radiation efficiency is -6.3175 dB. The sixth frequency band can be Figure 4 The marked points 5, 6 and 7 in the figure indicate that the frequency of the marked point 5 is 5.4542 GHz and the radiation efficiency is -19.557 dB; the frequency of the marked point 6 is 5.9371 GHz and the radiation efficiency is -6.8246 dB; the frequency of the marked point 7 is 6.9292 GHz and the radiation efficiency is -10.009 dB. The seventh frequency band can be Figure 4 The marked point 8 in the figure indicates that the frequency of the marked point 8 is 7.9069 GHz and the radiation efficiency is -17.653 dB.

[0064] Accordingly, the antenna ANT2 has a second resonance mode, which includes Figure 4 The marked points 1 to 8 correspond to the first sub-resonance mode to the eighth sub-resonance mode respectively, and the first sub-resonance mode to the eighth sub-resonance mode are respectively used to support the frequency bands corresponding to the marked points 1 to 8 mentioned above. As shown by the dotted line in FIG5(a), the first sub-resonance mode is a ring mode from the third feed 123 to the second feed 122, and the first sub-resonance mode can be obtained through the influence of the second matching circuit M2 and the third matching circuit M3; as shown by the dotted line in FIG5(b), the second sub-resonance mode is a ring mode from the third feed 123 to the second feed 112; as shown by the dotted line in FIG5(c), the third sub-resonance mode is a 1 / 4 wavelength mode from the second feed 112 to the slot 13; as shown by the dotted line in FIG5(d), the fourth sub-resonance mode is a mode from the slot 13 to the switch The 3 / 4 wavelength mode is generated by the ground current on the main board of the circuit M4 part; as shown by the dotted line in Figure 5(e), the fifth sub-resonance mode is the 1 / 4 wavelength mode from the second feed source 122 to the slot 13; as shown by the dotted line in Figure 5(f), the sixth sub-resonance mode is the ring mode from the second feed source 122 to the ground GND2; as shown by the dotted line in Figure 5(g), the seventh sub-resonance mode is the 3 / 4 wavelength mode from the slot 13 to the switch circuit M4; as shown by the dotted line in Figure 5(h), the eighth sub-resonance mode is the 5 / 4 wavelength mode from the switch circuit M4 to the slot 13.

[0065] In some embodiments, the third target frequency band may include an LB frequency band. The LB frequency band includes a frequency band less than 1 GHz. Figure 6As shown, the LB frequency band can be represented by the marked point 1, the frequency of the marked point 1 is 0.74327GHz, and the radiation efficiency is -10.3748dB. Accordingly, the antenna ANT3 has a third resonance mode, which is a resonance mode corresponding to the LB frequency band, and the third resonance mode is a 1 / 4 wavelength mode from the ground GND2 to the slot 13, and the third resonance mode is used to support the LB frequency band.

[0066] The embodiment of the present application does not specifically limit the lengths of the first radiator 111 and the second radiator 121. As an implementation, the length of the first radiator 111 corresponds to 1 / 4 of the medium wavelength of GPS, and the length of the second radiator 121 corresponds to 1 / 8-1 / 4 of the wavelength of the LB segment.

[0067] The antenna assembly 10 has the characteristics of small size, small space occupation and wide frequency band coverage. However, it can be seen from the foregoing that the second sub-resonance mode generated by the antenna ANT1 is to make the first feed point E on the first radiator 111 to the slot 13 resonate in the WIFI2.4 frequency band. The third sub-resonance mode generated by the antenna ANT2 is also to make the first feed point E on the first radiator 111 to the slot 13 resonate, but the difference is that at this time, the first feed point E on the first radiator 111 to the slot 13 resonates in the UHB frequency band.

[0068] Since the resonant current paths corresponding to the UHB band and the WIFI2.4 band are the same, shortening the branch length from the first feeding point E to the slot 13 will improve the radiation efficiency of the UHB band, while the radiation efficiency of the WIFI2.4 band will be sacrificed. On the contrary, increasing the branch length from the first feeding point E to the slot 13 will improve the radiation efficiency of the WIFI2.4 band, while the radiation efficiency of the UHB band will be reduced. Therefore, Figure 1 Although the antenna assembly 10 can integrate multiple communication frequency bands, it cannot take into account the radiation efficiency of the first target frequency band and the second target frequency band, and its communication performance needs to be further improved.

[0069] In view of this, the embodiments of the present application are Figure 1 An improved antenna assembly is proposed based on the invention. The antenna assembly is not only small in size and occupies a small space, but also includes an adjustment circuit on the second radiator in the antenna assembly, and the adjustment circuit is connected to the third feeding point. The adjustment circuit is used for the path length of the resonant current corresponding to the second target frequency band, and the path of the resonant current corresponding to the second target frequency band is different from the path of the resonant current corresponding to the first target frequency band. This method can not only improve the radiation efficiency of the first target frequency band excited by the first feed source and the second target frequency band excited by the second feed source, but also avoid the mutual influence between the radiation efficiency of the first target frequency band and the radiation efficiency of the second target frequency band, thereby improving the communication performance.

[0070] Combine the following Figure 7 , the antenna assembly 70 in the embodiment of the present application is described in detail. It should be understood that the antenna assembly 70 is Figure 1 Therefore, part of the structure of the antenna assembly 70 is similar to Figure 1 Part of the structure of the antenna assembly 10 is the same. To reduce space, reference is made to the antenna assembly 10 in the previous text for parts not described in detail.

[0071] See Figure 7 The antenna assembly 70 is configured to include a first antenna unit 71 and a second antenna unit 72. The first antenna unit 71 includes a first radiator 711 and a first feed source 712. The second antenna unit 72 includes a second radiator 721 and a second feed source 722. A gap 73 is formed between the first radiator 711 and the second radiator 721, and the first radiator 711 and the second radiator 721 are coupled through the gap 73 to realize that the first antenna unit 71 and the second antenna unit 72 are common body antennas with a common aperture.

[0072] like Figure 7 As shown, the first radiator 711 also has a first ground terminal D', a first free end C' and a first feeding point E'. The first feed source 712 is connected to the first feeding point E' located between the first ground terminal D' and the first free end C'. The radio frequency signal received or transmitted by the first feed source 712 can excite the first radiator 711 to resonate in the first target frequency band. The first feed source 712 corresponds to the antenna ANT1', and the antenna ANT1' has a first resonant mode corresponding to the first target frequency band. Optionally, a first matching circuit M1' can be provided between the first feed source 712 and the first feeding point E'.

[0073] The second radiator 721 also has a second ground terminal H', a second free end I', a second feeding point F' and a third feeding point G'. There is a gap 73 between the second free end I' and the first free end C'. The second feeding point F' and the third feeding point G' are located between the second ground terminal H' and the second free end I'. The second feed source 722 is connected to the second feeding point F', and the radio frequency signal received or transmitted by the second feed source 722 can excite the first radiator 711 and / or the second radiator 721 to resonate in the second target frequency band. The second feed source 722 corresponds to the antenna ANT2', and the antenna ANT2' has a second resonant mode corresponding to the second target frequency band. Optionally, a second matching circuit M2' can be provided between the second feed source 722 and the second feeding point F'.

[0074] The embodiment of the present application does not specifically limit the shape of the first radiator 711 or the second radiator 721. The shapes of the first radiator 711 or the second radiator 721 include but are not limited to bends, strips, sheets, rods, coatings, films, etc. When the first radiator 711 or the second radiator 721 is in a strip shape, the present application does not limit the extension track of the first radiator 711 or the second radiator 721. For example, the first radiator 711 or the second radiator 721 can extend in a straight line, a curve, a multi-section bend, etc. In addition, the first radiator 711 or the second radiator 721 can be a line with uniform width on the extension track, or a strip with unequal width such as a gradient width and a widened area.

[0075] As an example, Figure 7 As shown, the first radiator 711 may be in the shape of a 90-degree folded line. The first ground end D' and the first free end C are two ends of the first radiator 711. The second radiator 721 may be in the shape of a straight line. The second ground end H' and the second free end I' are two ends of the second radiator 721.

[0076] In an embodiment of the present application, the first radiator 711 and / or the second radiator 721 can be formed in any one or more ways including a flexible printed circuit (FPC) antenna radiator, a laser direct structuring (LDS) antenna radiator, a printed direct structuring (PDS) antenna radiator, or a metal frame.

[0077] By setting the first radiator 711 to be in the shape of a 90-degree folded line and the second radiator 721 to be in the shape of a straight line, the antenna assembly 70 can be installed at the corner of the electronic device 20 described later (for example, the upper left corner of the electronic device 20), so that the antenna assembly 70 has a better radio frequency environment while not being easily blocked by the hand when held, thereby ensuring the performance of wireless communication.

[0078] Continue to see Figure 7 The second antenna unit 72 further includes an adjustment circuit M4', and the adjustment circuit M4' is connected to the third feeding point G'. In the embodiment of the present application, the adjustment circuit M4' is used to adjust the path length of the resonant current corresponding to the second target frequency band. The path length of the resonant current corresponding to the second target frequency band is different from the path length of the resonant current corresponding to the first target frequency band.

[0079] Specifically, the adjustment circuit M4' is used to adjust the electrical length of the second radiator 721. For example, the adjustment circuit M4' can be used to assist in adjusting the impedance matching of the second feed source 722 so that the antenna ANT2' corresponding to the second feed source 722 has a preset S parameter. Accordingly, the adjustment circuit M4' can change the second resonant mode generated by the antenna ANT2' corresponding to the second feed source 722 according to its own low impedance characteristics or high impedance characteristics to adjust the length of the path of the resonant current corresponding to the second target frequency band.

[0080] The embodiment of the present application does not specifically limit the position of the third feeding point G', and the position of the third feeding point G' can be set according to the electrical length of the second radiator 721 or the design of the second resonance mode generated by the antenna ANT2' corresponding to the second feed source 722. As an example, Figure 7 As shown, the third feeding point G' is located between the second feeding point F' and the second ground terminal H'.

[0081] By setting the adjustment circuit M4', the interference of the RF signal of the first target frequency band on the RF signal of the second target frequency band can be reduced. This method not only improves the radiation efficiency of the first target frequency band excited by the first feed source and the second target frequency band excited by the second feed source, but also avoids the influence of the radiation efficiency of the first target frequency band and the radiation efficiency of the second target frequency band, thereby avoiding the need to balance the radiation efficiency of the first target frequency band and the radiation efficiency of the second target frequency band, and further improves the communication performance of the antenna assembly 70.

[0082] In addition, since the position of the third feeding point G' where the adjustment circuit M4' is connected to the second radiator 721 is variable, the actual position of the adjustment circuit M4' can be flexibly adjusted left and right, which is equivalent to the electrical length of the second target frequency band being adjustable, thereby increasing the degree of freedom of design adjustment. By adjusting the electrical length of the second target frequency band (for example, the UHB band) and adjusting the impedance characteristics of the adjustment circuit M4', the radiation efficiency of the second target frequency band can be effectively guaranteed.

[0083] It should be understood that the path of the resonant current in the embodiment of the present application can be indicated by the resonant mode of the antenna. In the improved antenna assembly 70, different target frequency bands correspond to different resonant modes, and different resonant modes correspond to different resonant current paths. In other words, compared to Figure 1 The working modes of the antenna assembly 10 and the antenna assembly 70 are also improved. Figure 8-Figure 1 1 The operation mode of the antenna assembly 70 is described in detail.

[0084] In the embodiments of the present application, Figure 8As shown, the first target frequency band may include the GPS-L1 frequency band and the WIFI2.4 frequency band. Among them, the GPS-L1 frequency band can be Figure 8 The marked point 1 in the figure indicates that the WIFI2.4 frequency band can be Figure 8 The marked point 2 in the figure indicates that the frequency of the marked point 1 is 1.5074 GHz, and the radiation efficiency is -16.893 dB; the frequency of the marked point 2 is 2.5768 GHz, and the radiation efficiency is -11.115 dB.

[0085] Correspondingly, the antenna ANT1 corresponding to the first feed source has a first resonant mode, and the first resonant mode is used to support reception or transmission of the first target frequency band. Specifically, the first resonant mode includes a first sub-resonant mode and a second sub-resonant mode that support the GPS-L1 band and the WIFI2.4 band, respectively. As shown by the dotted line in Figure 9 (a), the first sub-resonant mode is a 1 / 4 wavelength mode from the first ground terminal D' to the slot 73. As shown by the dotted line in Figure 9 (b), the second sub-resonant mode is a 1 / 4 wavelength mode from the first feed source to the slot 73. It should be understood that the first sub-resonant mode and the second sub-resonant mode can both be understood as a quarter wavelength mode of an inverted-F antenna (IFA antenna).

[0086] It should be noted that, in the embodiment of the present application, the antenna ANT1 corresponding to the first feed source may also have other working modes. For example, in order to achieve high frequency deconstruction, the antenna ANT1 corresponding to the first feed source needs to introduce a more complex band stop, which will form clutter at the intermediate passband position. Figure 8 As shown, the clutter may be a peak between the marked point 1 and the marked point 2. Since the peak is not a main working mode, it will not be described in detail here.

[0087] In some embodiments, the second target frequency band may include a UHB frequency band. The UHB frequency band may include an N78 frequency band and an N77 frequency band. The N78 frequency band is a 3.4-3.6 GHz frequency band, and the N77 frequency band is a 3.3-4.2 GHz frequency band. For example, the second target frequency band may be Fig.10 The marked points 1-2 in the figure represent the frequency of the marked point 1, which is 3.4762 GHz and the radiation efficiency is -10.789 dB; the marked point 2 has a frequency of 4.0769 GHz and a radiation efficiency of -18.088 dB.

[0088] Correspondingly, the antenna ANT2 corresponding to the second feed source has a second resonant mode, and the second resonant mode is used to support reception or transmission of the second target frequency band. Specifically, the second resonant mode includes a corresponding third sub-resonant mode and a fourth sub-resonant mode for supporting the UHB frequency band. Specifically, as shown by the dotted line in Figure 11 (a), the third sub-resonant mode is a 1 / 4 wavelength mode from the adjustment circuit M4 to the slot 73. As shown by the dotted line in Figure 11 (b), the fourth sub-resonant mode is a 3 / 4 wavelength mode from the second ground terminal to the slot 73.

[0089] In some embodiments, the second target frequency band may also include a WIFI-5G frequency band. For example, the WIFI-5G frequency band in the second target frequency band may be Fig.10 The marked points 3-5 in the diagram represent the frequency of the marked point 3, which is 5.0201 GHz and the radiation efficiency is -30 dB; the frequency of the marked point 4 is 6.0617 GHz and the radiation efficiency is -7.7545 dB; the frequency of the marked point 5 is 6.2888 GHz and the radiation efficiency is -9.6831 dB.

[0090] Correspondingly, the second resonant mode also includes a fifth sub-resonant mode-seventh sub-resonant mode for supporting the WIFI-5G frequency band. Specifically, as shown by the dotted line in Figure 11 (c), the fifth sub-resonant mode is a 3 / 4 wavelength mode from the first ground terminal to the slot 73. As shown by the dotted line in Figure 11 (d), the sixth sub-resonant mode is a 1 / 4 wavelength mode from the second feed source to the slot 73. As shown by the dotted line in Figure 11 (e), the seventh sub-resonant mode is a mixed mode, which is a mixture of a three-quarter wavelength mode from the second ground terminal to the slot and a three-quarter wavelength mode from the first ground terminal to the slot.

[0091] By setting the above resonance mode, it can be determined that Figure 1 In the antenna assembly 10, the path of the resonant current corresponding to the second target frequency band in the antenna assembly 70 is different from the path of the resonant current corresponding to the first target frequency band.

[0092] In addition, through the setting of the fifth sub-resonance mode to the seventh sub-resonance mode in the second resonant mode, it can be known that the setting of the second resonant mode in the antenna ANT2 in the antenna assembly 70 enables the second target frequency band excited by the second feed source 722 to cover more frequency points of the WIFI-5G frequency band. In other words, the setting of the second resonant mode in the antenna ANT2 enables WIFI-5G to have multiple mode coverage, so the radiation efficiency of the WIFI-5G frequency band can be superimposed. In addition, the multi-mode coverage can realize the adjustability of frequency deviation, so the communication performance under the WIFI-5G frequency band can be further improved.

[0093] In some embodiments, Figure 7As shown, the second antenna unit 72 may further include a third feed source 723. The third feed source 723 is electrically connected to the second radiator 721, and the radio frequency signal received or transmitted by the third feed source 723 may excite the second radiator 721 to resonate in a third target frequency band. Optionally, a third matching circuit M3' may be provided between the third feed source 723 and the third feeding point G'.

[0094] It should be understood that the first matching circuit M1', the second matching circuit M2' and the third matching circuit M3' in the embodiment of the present application can have substantially the same functions as the first matching circuit M1, the second matching circuit M2 and the third matching circuit M3 described above, and will not be described again here to save space.

[0095] As mentioned above, the third target frequency band may include the LB frequency band. Fig.12 As shown, the LB frequency band can be represented by the marked point 1, the frequency of the marked point 1 is 0.74227 GHz, and the radiation efficiency is -3.3748 dB. Accordingly, the third feed source 723 corresponds to the antenna ANT3, and the antenna ANT3 has a third resonance mode, which is a 1 / 4 wavelength mode from the ground GND2 to the slot 73, and the third resonance mode is used to support the resonance mode of the LB frequency band.

[0096] In some other embodiments, the third target frequency band may also include the GPS-L5 frequency band, which is the 1.176 GHz frequency band. It should be understood that the GPS-L5 frequency band may also correspond to the third resonance mode of the antenna ANT3. The difference is that the realization of the third target frequency band requires the matching adjustment of the matching circuit M3'.

[0097] By respectively arranging the second feed 722 and the third feed 723 in the second antenna unit 72, the antennas ANT2 and ANT3 corresponding to the second feed 722 and the third feed 723 can be excited to generate radio frequency signals of different frequency bands. This method requires adding an additional extractor to extract the excitation signals corresponding to different frequency bands.

[0098] The embodiment of the present application specifically defines the way in which the third feed source 723 is electrically connected to the second radiator 721. As an example, the third feed source 723 can be electrically connected to the fourth feed point ( Figure 7 As another example, Figure 7 As shown, the third feed source 723 may be electrically connected to the second feed point F′, that is, the third feed source 723 may share the second feed point F′ with the second feed source 722 .

[0099] The embodiment of the present application does not specifically limit the connection method between the first feed source 712 and the first feed point E', the connection method between the second feed source 722 and the second feed point F', the connection method between the third feed source 723 and the second feed point F', or the connection method between the adjustment circuit M4' and the third feed point G'. For example, the connection method may be a direct electrical connection (such as welding), or an indirect electrical connection through a coaxial line, a microstrip line, a radio frequency line, a conductive spring, a conductive adhesive, etc. Preferably, the connection method may be an electrical connection through a conductive spring.

[0100] In the embodiment of the present application, by connecting the third feed source 723 and the second feed source 722 to the same feeding point F', the wiring of the antenna assembly 70 can be reduced, making the structural volume of the antenna assembly 70 smaller, and facilitating matching and stacking with the overall layout antenna, greatly reducing the stacking difficulty of the entire machine.

[0101] In order to verify the working efficiency of the antenna assembly 70, the embodiments of the present application respectively provide simulation diagrams of the system radiation efficiency and the system total efficiency of the antenna ANT1' corresponding to the first feed source in the antenna assembly 70, the antenna ANT2' corresponding to the second feed source 722, and the antenna ANT3' corresponding to the third feed source 723.

[0102] like Fig.13 As shown, the frequency of frequency point 1 generated by the excitation of antenna ANT1' is 1.5172GHz, and the total system efficiency is -3.1636dB, the frequency of frequency point 2 is 2.5703GHz, and the total system efficiency is -3.2774dB. The frequency of frequency point 3 generated by the excitation of antenna ANT2' is 3.4914GHz, and the total system efficiency is -4.2687dB, the frequency of frequency point 4 is 5.0968GHz, and the total system efficiency is -2.1574dB, the frequency of frequency point 5 is 6.1742GHz, and the total system efficiency is -2.2923dB. The frequency of frequency point 6 generated by the excitation of antenna ANT3' is 0.74353GHz, and the total system efficiency is -9.6181dB. It can be seen that the total system efficiency of the WIFI-2.4G band and the GPS-L1 band excited by antenna ANT1' is between -3dB and -4dB, and the radiation efficiency is relatively high. The total system efficiency of the WIFI-5G frequency band excited by the antenna ANT2' is between -3dB and -5dB, and the radiation efficiency is also high. At the same time, the total system efficiency of the LB frequency band excited by the antenna ANT3' is about -10dB, and the radiation efficiency is also high.

[0103] As can be seen from the foregoing, the second target frequency band generated by the excitation of the second feed source 722 covers more frequency points in the WIFI5G frequency band. Since the WEIFI-5G frequency band is higher and the wavelength is shorter, the WIFI-5G frequency band is more sensitive to the wiring method between the second feed source 722 and the second feed point F'. If the wiring method is improper, the radiation efficiency of the WIFI-5G frequency band will be reduced.

[0104] In order to ensure the radiation efficiency of the WIFI-5G frequency band, the wire between the second feed source 722 and the second feeding point F' can be set so that the first branch of the direction of the feeding current from the second feed source 722 to the second feeding point F' is the same as the direction of the resonant current from the second feeding point F' to the slot 73.

[0105] As an example, Fig.14 As shown, the second feed source 722 can be arranged between the second feed point F' and the third feed point G'. In view of this, the wire J between the second feed source 722 and the second feed point F' can extend from the second feed source 722 to the upper left direction. Therefore, the direction of the feeding current from the second feed source 722 to the second feed point F' has a first branch direction and a second branch direction. The first branch direction is parallel to the second radiator 721 and is the same as the direction of the feeding current from the second feed point F' to the slot 73. The second branch direction is perpendicular to the second radiator 721.

[0106] By setting the first branch direction of the feeding current from the second feed source 722 to the second feeding point F' to be the same as the direction of the resonant current from the second feeding point F' to the slot 73, the reverse direction during the feeding current radiation process can be avoided, thereby ensuring the radiation efficiency of the WIFI-5G band.

[0107] Furthermore, if Fig.14 As shown, the second feed source 722 and the second feed point F' may also be provided with a second matching circuit M2'. To further ensure that there is no reverse direction during the radiation of the feed current, the second matching circuit M2' is provided directly below the second feed source 722. Based on this, the wire J may include a wire J1 and a wire J2. Fig.14 It can be seen that the path of the resonant current in the fifth sub-resonant mode of the antenna ANT2' in the above text is as follows Fig.14 As shown by the dotted line in , the path of the resonant current does not include the reverse current.

[0108] The embodiment of the present application does not specifically limit the structure of the first matching circuit M1', the second matching circuit M2', the third matching circuit M3' or the adjustment circuit M4'. M1', M2', M3' or M4' may include but are not limited to frequency-selective filtering networks such as capacitors, inductors, resistors, etc. that are arranged in series and / or in parallel. In some embodiments, M1', M2', M3' or M4' may include branches formed by multiple capacitors, inductors, and resistors that are connected in series and / or in parallel, and switches that control the on and off of multiple branches. By controlling the on and off of different switches, the frequency-selective parameters (such as resistance values, inductance values, and capacitance values) of the matching circuit or the adjustment circuit can be adjusted, and then the filtering range of the matching circuit can be adjusted, so that the matching circuit or the adjustment circuit can adjust the corresponding radio frequency signal. Different matching circuits or adjustment circuits may be different, and their specific circuit implementations are not used to limit the scope of protection of the present application.

[0109] The matching circuit or the adjustment circuit is also used to perform impedance matching on the radiator to which it is electrically connected, so that the impedance of the radiator to which it is electrically connected matches the frequency at which it resonates, thereby achieving a larger transmit and receive power of the radiator. By setting the matching circuit or the adjustment circuit and adjusting the parameters of the frequency modulation circuit, the resonant frequency of each antenna can be moved along the low frequency or high frequency, achieving the ultra-wideband of the antenna assembly 70, and increasing the coverage and communication quality of the antenna signal of the antenna assembly 70. For example, the first matching circuit is used to perform impedance matching on the excitation signal transmitted by the first feed source to excite the first radiator to resonate in the first target frequency band; the second matching circuit is used to perform impedance matching on the excitation signal transmitted by the second feed source to excite the second radiator and / or the first radiator to resonate in the second target frequency band; the third matching circuit is used to perform impedance matching on the excitation signal transmitted by the third feed source to excite the second radiator to resonate in the third target frequency band.

[0110] The embodiment of the present application further provides an electronic device 20, and the antenna assembly 70 can be applied to the electronic device 20, that is, the electronic device 20 includes any of the antenna assemblies 70 described above.

[0111] The embodiment of the present application does not specifically limit the type of electronic device 20, as long as the electronic device 150 needs to realize the wireless communication function through the antenna assembly. The electronic device can be, for example, a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA) device, a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a learning machine or an electronic dictionary and a smart watch and other terminal devices.

[0112] Taking the electronic device 20 as a mobile phone as an example, Fig.15 and Fig.16 Schematic diagram of the layout of the antenna assembly 70 in the electronic device in the embodiment of the present application. It should be understood that Fig.15 and Fig.16 For illustration only, the electronic device 20 may include a plurality of antenna assemblies 70 and the antenna assemblies 70 may be installed at any position of the electronic device 20 .

[0113] Preferably, if Fig.15 and Fig.16 As shown, the first antenna unit 710 is arranged at the upper corner of the electronic device 20, and the second antenna unit 720 in the antenna assembly 70 is arranged at the top of the electronic device 20, so as to avoid blocking the signal of the antenna assembly 70 when the user holds the electronic device 20.

[0114] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any other combination. When implemented by software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present disclosure is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a machine-readable storage medium, or transmitted from one machine-readable storage medium to another machine-readable storage medium. For example, the computer instructions can be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (Digital Subscriber Line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The machine-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrations. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital video disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0115] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments of the present disclosure can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present disclosure.

[0116] In the several embodiments provided in the present disclosure, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0117] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0118] In addition, each functional unit in each embodiment of the present disclosure may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0119] The above is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. An antenna assembly, characterized in that: include: A first antenna unit, comprising a first radiator and a first feed source, wherein the first radiator has a first ground end, a first free end and a first feed point, wherein the first feed point is located between the first ground end and the first free end, the first feed source is connected to the first feed point, and the first feed source excites the first radiator to resonate in a first target frequency band; A second antenna unit includes a second radiator, a second feed source, and an adjustment circuit, wherein the second radiator has a second ground end and a second free end, the second free end and the first free end are spaced apart to form a gap, and the second radiator is coupled to the first radiator through the gap; Among them, the second radiator also has a second feeding point and a third feeding point, the second feeding point and the third feeding point are located between the second free end and the second ground end, the second feed source is connected to the second feeding point, the adjustment circuit is connected to the third feeding point, the second feed source excites the second radiator and / or the first radiator to resonate in a second target frequency band, the adjustment circuit is used to regulate the path length of the resonant current corresponding to the second target frequency band, and the path of the resonant current corresponding to the first target frequency band is different from the path of the resonant current corresponding to the second target frequency band.

2. The antenna assembly according to claim 1, characterized in that: The second antenna unit further includes a third feed source, which is connected to the second feed point and excites the second radiator to resonate in a third target frequency band.

3. The antenna assembly according to claim 1, characterized in that: The third feeding point is located between the second feeding point and the second ground terminal.

4. The antenna assembly according to claim 2, characterized in that: The first antenna unit further includes a first matching circuit, which is connected to the first feeding point and the first feed source respectively, and is used to perform impedance matching on the excitation signal transmitted by the first feed source to excite the first radiator to resonate in the first target frequency band; The second antenna unit further includes a second matching circuit, which is connected to the second feeding point and the second feed source respectively, and is used to perform impedance matching on the excitation signal transmitted by the second feed source to excite the second radiator and / or the first radiator to resonate in the second target frequency band; The second antenna unit also includes a third matching circuit, which is respectively connected to the second feeding point and the third feed source, and is used to perform impedance matching on the excitation signal transmitted by the third feed source to excite the second radiator to resonate in the third target frequency band.

5. The antenna assembly according to claim 1, characterized in that: The antenna corresponding to the first feed source has a first resonance mode, and the first resonance mode includes a first sub-resonance mode and a second sub-resonance mode. The first sub-resonance mode is a quarter-wavelength mode from the first ground end to the slot, and the second sub-resonance mode is a quarter-wavelength mode from the first feed source to the slot. The first sub-resonance mode is used to support the GPS-L1 band in the first target frequency band, and the second sub-resonance mode is used to support the WIFI-2.4G band in the first target frequency band.

6. The antenna assembly according to claim 1, characterized in that: The antenna corresponding to the second feed source has a second resonant mode, and the second resonant mode includes a third sub-resonant mode and a fourth sub-resonant mode. The third sub-resonant mode is a quarter-wavelength mode from the adjustment circuit to the slot, and the fourth sub-resonant mode is a three-quarter-wavelength mode from the second ground end to the slot. The third sub-resonant mode and the fourth sub-resonant mode are used to support the UHB frequency band in the second target frequency band.

7. The antenna assembly according to claim 6, characterized in that: The second resonance mode also includes a fifth sub-resonance mode, a sixth sub-resonance mode and a seventh sub-resonance mode, the fifth sub-resonance mode is a three-quarter wavelength mode from the first ground end to the slot, the sixth sub-resonance mode is a quarter wavelength mode from the second feed source to the slot, the seventh sub-resonance mode is a mixed mode of the three-quarter wavelength mode from the second ground end to the slot and the three-quarter wavelength mode from the first ground end to the slot, and the fifth sub-resonance mode, the sixth sub-resonance mode and the seventh sub-resonance mode are all used to support the WIFI-5G frequency band in the second target frequency band.

8. The antenna assembly according to claim 2, characterized in that: The antenna corresponding to the third feed source has a third resonance mode, and the third resonance mode is used to support the third target frequency band. The third resonance mode includes a quarter-wavelength mode from the second ground end to the gap, and the third target frequency band includes the GPS-L5 band or the low-frequency LB band.

9. The antenna assembly according to claim 7, characterized in that: The conductive line between the second feed source and the second feed point is arranged so that a first branch of a feeding current from the second feed source to the second feed point is the same as a direction of a resonant current from the second feed point to the slot.

10. An electronic device, characterized in that: The invention comprises the antenna assembly as claimed in any one of claims 1 to 9.

11. The electronic device according to claim 10, wherein: The first antenna unit in the antenna assembly is arranged at an upper corner of the electronic device, and the second antenna unit in the antenna assembly is arranged at the top of the electronic device.

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