Antenna assembly and electronic equipment

Abstract

The utility model provides an antenna assembly and electronic equipment, and relates to the technical field of electronic equipment. The antenna assembly comprises a radiation branch knot; a breaking joint is arranged between the parasitic branch knot and the radiation branch knot; the feed source is electrically connected to the radiation branch knot; the matching circuit is electrically connected between the radiation branch knot and the feed source; the matching circuit at least comprises a switching circuit, the switching circuit comprises a change-over switch and a plurality of switching branches, the common end of the change-over switch is electrically connected with the radiation branch knot, and the switching end of the change-over switch is connected with the plurality of switching branches in a switching manner; the matching circuit is used for tuning the radiation branch knot to generate resonance with signals of multiple frequency bands. Through the switching circuit in the matching circuit, the impedance characteristic of the radiation branch knot can be tuned according to the requirements of different frequency bands, so that the antenna assembly can cover a plurality of frequency bands, and the radiation efficiency of the antenna is improved.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of electronic devices, and in particular, to an antenna assembly and an electronic device. BACKGROUND

[0002] In the rapid development of wireless communication technology, electronic devices need to support more and more communication frequency bands, which leads to severe challenges in antenna design. In order to support multi-band communication, the antenna design needs to realize multi-band coverage in a limited space. Therefore, how to consider the coverage of multiple frequency bands in a limited space while meeting the performance requirements of each frequency band antenna has become a challenge for current electronic devices. CONTENT OF THE UTILITY MODEL

[0003] The present disclosure provides an antenna assembly and an electronic device, which at least partially solve the problems in the related art.

[0004] According to a first aspect of an embodiment of the present disclosure, an antenna assembly is provided, comprising: a radiation branch; a parasitic branch, a gap being provided between the radiation branch and the parasitic branch; a feed source, the feed source being electrically connected to the radiation branch; a matching circuit, the matching circuit being electrically connected between the radiation branch and the feed source; the matching circuit at least comprising a switch circuit; the switch circuit comprising a switching switch and a plurality of switch branches, a common end of the switching switch being electrically connected to the radiation branch, a switching end of the switching switch being switchingly connected to the plurality of switch branches; wherein the matching circuit is configured to tune the radiation branch to resonate with signals of a plurality of frequency bands.

[0005] In some embodiments of the present disclosure, the matching circuit further comprises a first capacitor; a first end of the first capacitor being electrically connected to the radiation branch, a second end of the first capacitor being electrically connected to the feed source; wherein, in a disconnected state of the switching switch, the radiation branch resonates with signals of a first frequency band in a first communication frequency band.

[0006] In some embodiments of the present disclosure, the plurality of switch branches comprises a first switch branch, the switching end of the switching switch comprises a first switching end; a second capacitor is provided on the first switch branch, a first end of the second capacitor being electrically connected to the first switching end, a second end of the second capacitor being electrically connected between the feed source and the first capacitor; wherein, in a conductive state of the first switch branch, the radiation branch resonates with signals of a second frequency band in the first communication frequency band.

[0007] In some embodiments of the present disclosure, the plurality of switch branches includes a second switch branch, and the switching end of the switching switch includes a second switching end; a first inductor is arranged on the second switch branch, a first end of the first inductor is electrically connected to the second switching end, and a second end of the first inductor is grounded; wherein, in the on state of the first switch branch and the second switch branch, the radiation branch resonates with signals of a third frequency band in the first communication frequency band.

[0008] In some embodiments of the present disclosure, the plurality of switch branches includes a third switch branch, and the switching end of the switching switch includes a third switching end; a second inductor is arranged on the third switch branch, a first end of the second inductor is electrically connected to the third switching end, and a second end of the second inductor is grounded; wherein, in the on state of the first switch branch and the third switch branch, the radiation branch resonates with signals of a fourth frequency band in the first communication frequency band.

[0009] In some embodiments of the present disclosure, the matching circuit further includes a first resonant circuit and a second resonant circuit, and the first resonant circuit and the second resonant circuit include at least one or a combination of multiple of capacitors, inductors and resistors; a first end of the first capacitor is electrically connected to the radiation branch, and a second end of the first capacitor is electrically connected to the second resonant circuit; a first end of the first resonant circuit is electrically connected to the radiation branch, and a second end of the first resonant circuit is grounded; a first end of the second resonant circuit is electrically connected to the first capacitor, and a second end of the second resonant circuit is electrically connected to the feed source.

[0010] In some embodiments of the present disclosure, the matching circuit further includes a third inductor; a first end of the third inductor is electrically connected to the radiation branch, and a second end of the third inductor is electrically connected to the feed source; wherein, in the off state of the switching switch, the radiation branch resonates with signals of a first frequency band in the second communication frequency band.

[0011] In some embodiments of the present disclosure, the plurality of switch branches includes a fourth switch branch, and the switching end of the switching switch includes a fourth switching end; a fourth inductor is arranged on the fourth switch branch, a first end of the fourth inductor is electrically connected to the fourth switching end, and a second end of the fourth inductor is grounded; wherein, in the on state of the fourth switch branch, the radiation branch resonates with signals of a second frequency band in the second communication frequency band.

[0012] In some embodiments of the present disclosure, the plurality of switch branches includes a fifth switch branch, and the switching end of the switching switch includes a fifth switching end; a fifth inductor is arranged on the fifth switch branch, a first end of the fifth inductor is electrically connected to the fifth switching end, and a second end of the fifth inductor is grounded; and in a conductive state of the fifth switch branch, the radiation branch resonates with a signal of a third frequency band in the second communication frequency band.

[0013] In some embodiments of the present disclosure, the matching circuit further includes a third resonant circuit and a fourth resonant circuit, the third resonant circuit and the fourth resonant circuit include at least one or a combination of multiple of capacitors, inductors and resistors; a first end of the third inductor is electrically connected to the radiation branch, and a second end of the third inductor is electrically connected to the fourth resonant circuit; a first end of the third resonant circuit is electrically connected to the radiation branch, and a second end of the third resonant circuit is grounded; a first end of the fourth resonant circuit is electrically connected to the fifth inductor, and a second end of the fourth resonant circuit is electrically connected to the feed source.

[0014] In some embodiments of the present disclosure, the antenna assembly includes a ground bar, and the ground bar is in a ring opening structure.

[0015] In some embodiments of the present disclosure, the antenna assembly further includes a connecting piece with a bending angle, and the connecting piece is used to connect the matching circuit and the radiation branch.

[0016] According to a second aspect of the embodiments of the present disclosure, an electronic device is provided, including the above-mentioned antenna assembly.

[0017] In some embodiments of the present disclosure, the electronic device further includes a battery and a shielding device; the shielding device is arranged on a side wall of the battery close to the antenna assembly; the battery includes a bending area close to the antenna assembly, and a groove is arranged on the bending area.

[0018] The technical solutions provided by the embodiments of the present disclosure can include the following beneficial effects:

[0019] The antenna assembly in the embodiments of the present disclosure includes a radiation branch, a parasitic branch, a feed source and a matching circuit, wherein the matching circuit at least includes a switch circuit, and through the design of the switch circuit including a switching switch and a plurality of switch branches, the impedance characteristics of the radiation branch can be tuned according to the requirements of different frequency bands, so that the antenna assembly can cover multiple frequency bands, and the radiation efficiency of the antenna is improved.

[0020] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0021] The accompanying drawings, which are incorporated herein and form a part of the specification, illustrate embodiments consistent with the present disclosure and, together with the description, further serve to explain the principles of the present disclosure.

[0022] Figure 1 is a structural diagram of an antenna assembly according to an exemplary embodiment of the present disclosure.

[0023] Figure 2 is a circuit diagram of a matching circuit according to an exemplary embodiment of the present disclosure. Figure 1 .

[0024] Figure 3 is a circuit diagram of a matching circuit according to an exemplary embodiment of the present disclosure. Figure 2 .

[0025] Figure 4 is a circuit diagram of a matching circuit according to an exemplary embodiment of the present disclosure. Figure 3 .

[0026] Figure 6 is a structural diagram of another antenna assembly according to an exemplary embodiment of the present disclosure.

[0027] Figure 7 is a schematic diagram of a current flowing along a loop opening structure according to an embodiment of the present disclosure.

[0028] Figure 8 is a schematic diagram of a connector according to an embodiment of the present disclosure.

[0029] Figure 9 is a structural diagram of an electronic device according to an exemplary embodiment of the present disclosure.

[0030] Figure 10 is a schematic diagram of a shielding device according to an exemplary embodiment of the present disclosure.

[0031] Figure 1 is a block diagram of an electronic device according to some embodiments of the present disclosure. DETAILED DESCRIPTION

[0032] Exemplary embodiments of this disclosure will be described in detail herein, examples of which are illustrated in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings denote the same or similar elements unless otherwise indicated. Various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will become apparent upon understanding this disclosure. For example, the order of operations described herein is merely illustrative and is not limited to those orders set forth herein, but can be changed as will become apparent upon understanding this disclosure, except for operations that must be performed in a particular order. Furthermore, for clarity and brevity, descriptions of features known in the art may be omitted.

[0033] The embodiments described below, which are examples of some of the embodiments of this disclosure, do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0034] The specific implementation methods of the embodiments of this disclosure will now be described in detail with reference to the accompanying drawings.

[0035] Figure 1 This is a structural diagram of an antenna assembly according to an exemplary embodiment of the present disclosure. Figure 2 As shown, the antenna assembly 100 includes: a radiating stub 110, a parasitic stub 120, a feed 130, and a matching circuit 140.

[0036] The radiating stub 110 is used to radiate or receive electromagnetic waves. By adjusting the length and shape of the radiating stub to match the wavelength of a specific frequency band, efficient signal transmission and reception can be achieved.

[0037] A gap is provided between the parasitic stub 120 and the radiating stub 110. The parasitic stub 120 can enhance the radiation efficiency of the antenna assembly 110 through electromagnetic coupling with the radiating stub 110.

[0038] The feed 130 is the signal input / output terminal of the antenna assembly 100, used to transmit and receive radio frequency signals. The feed 130 is electrically connected to the radiating stub 110, transmitting signals to the radiating stub 110 for radiation, or receiving signals from the radiating stub 110.

[0039] Matching circuit 140 is electrically connected between radiating stub 110 and feed 130, and matching circuit 140 includes at least switching circuit 141.

[0040] The switch circuit 141 includes a switching switch SW and a plurality of switch branches. The common terminal of the switching switch SW is electrically connected to the radiation branch 110, and the switching terminals of the switching switch SW are switched to be connected to the plurality of switch branches. The matching circuit 140 can tune the radiation branch 110 to resonate with signals of a plurality of frequency bands through the switch circuit 141.

[0041] In an example embodiment, the common terminal of the switching switch SW is electrically connected to the radiation branch 110, and the plurality of switching terminals are respectively connected to a plurality of different switch branches. Each switch branch corresponds to an independently controllable internal switch, and the plurality of switch branches can be simultaneously turned on / off. Different electrical elements are arranged in different switch branches. The switch circuit 141 controls the switching switch SW to be connected to the corresponding switching terminal according to the working requirement, so as to generate resonance working in the corresponding frequency band. The electrical element can be a capacitor, an inductor, a resistor, or a combination circuit of a capacitor, an inductor, and a resistor.

[0042] The antenna assembly in the embodiment of the present disclosure includes a radiation branch, a parasitic branch, a feed source, and a matching circuit. The matching circuit includes at least a switch circuit. The switch circuit includes a switching switch and a plurality of switch branches. The impedance characteristics of the radiation branch can be tuned according to the requirements of different frequency bands through the switch circuit, so that the antenna assembly can cover a plurality of frequency bands and improve the radiation efficiency of the antenna.

[0043] In the embodiment of the present disclosure, the matching circuit 140 can be designed in two structures. One structure is used to tune the radiation branch 110 to resonate with signals of a first communication frequency band, and the other structure is used to tune the radiation branch 110 to resonate with signals of a second communication frequency band. The first communication frequency band and the second communication frequency band correspond to communication standards of different geographical regions, respectively.

[0044] For example, the first communication frequency band corresponds to a domestic communication standard, and the second communication frequency band corresponds to an international communication standard. The first communication frequency band can include, but is not limited to, B5, B8, B28, N41, and N78 frequency bands in the domestic communication standard; and the second communication frequency band can include, but is not limited to, B5, B8, B28, and B32 frequency bands in the international communication standard.

[0045] The antenna assembly 100 in the embodiment of the present disclosure can be configured with a matching circuit 140 designed to adapt to a first communication frequency band standard in a region using the first communication frequency band standard, so that the radiation branch 110 resonates with signals of the frequency band and ensures stable signal transmission and reception. In a region using a second communication frequency band standard, the matching circuit 140 is configured with a corresponding design, so that the radiation branch 110 resonates with signals of the second communication frequency band and meets the communication requirements of the region. In addition, the antenna assembly 100 is composed of the radiation branch 110, the parasitic branch 120, the feed source 130, and the matching circuit 140. The parts work together to adapt to different communication frequency bands in a limited space.

[0046] Figure 1 This is a circuit of a matching circuit shown according to an exemplary embodiment of the present disclosure. Figure 2 . Figure 2 The matching circuit 140 shown is used to tune the radiating stub 110 to resonate with the signal in the first communication frequency band. For example... Figure 2 As shown, the matching circuit 140 may include a first capacitor C1. The first terminal of the first capacitor C1 is electrically connected to the radiating stub 110, and the second terminal is electrically connected to the feed source 130. When the switching switch SW is in the off state, the radiating stub 110 resonates with the signal of the first frequency band in the first communication frequency band. For example, in the communication standard (domestic communication standard) corresponding to the first communication frequency band, the first frequency band includes the N41 band, an important frequency band for 5G networks, with a frequency range of 2496MHz to 2690MHz.

[0047] In some embodiments of this disclosure, such as Figure 2 As shown, the switch circuit 141 includes a first switch branch, and the switching terminal of the switch SW includes the first switching terminal.

[0048] A second capacitor C2 is provided on the first switching branch. The first end of the second capacitor C2 is electrically connected to the first switching terminal, and the second end of the second capacitor C2 is electrically connected between the feed 130 and the first capacitor C1. When the first switching branch is in the conducting state, that is, when the second capacitor C2 is connected, the radiating stub 110 resonates with the signal of the second frequency band in the first communication frequency band.

[0049] In this embodiment of the disclosure, in the matching circuit 140 applicable to the communication standard (domestic communication standard) corresponding to the first communication frequency band, a first capacitor C1 is connected in series on the main circuit of the matching circuit 140, and a second capacitor C2 is provided on the first switch branch of the first switch circuit 141, that is, the second capacitor C2 is connected in series to the main circuit, so that the second capacitor C2 and the first capacitor C1 in the main circuit are connected in parallel.

[0050] For example, in the communication standard (domestic communication standard) corresponding to the first communication frequency band, the second frequency band includes the B28 band and the N78 band. The B28 band is an important low-frequency band that can be used in 4G LTE networks, and in the communication standard (domestic communication standard) corresponding to the first communication frequency band, its frequency range can be 703MHz to 788MHz. Furthermore, the uplink frequency range of the B28 band can be 703MHz to 733MHz, and the downlink frequency range can be 758MHz to 788MHz. The N78 band is an important frequency band for 5G networks, and its frequency range can be 3300MHz to 3800MHz.

[0051] In some embodiments of this disclosure, such asFigure 2 As shown, the switch circuit 141 includes a second switch branch, and the switching end of the switching switch SW includes a second switching end.

[0052] A first inductor L1 is arranged on the second switch branch, a first end of the first inductor L1 is electrically connected to the second switching end, and a second end of the first inductor L1 is grounded. When the first switch branch and the second switch branch are in a conductive state, that is, the second capacitor C2 and the first inductor L1 are connected, the radiation branch 110 resonates with signals in a third frequency band in the first communication frequency band.

[0053] For example, in the communication standard (domestic communication standard) corresponding to the first communication frequency band, the third frequency band includes the B5 frequency band. The B5 frequency band is an important low frequency band of the 4G LTE network, and the frequency range thereof can be 824 MHz to 894 MHz. Further, the uplink frequency thereof can be 824 MHz to 849 MHz, and the downlink frequency thereof can be 869 MHz to 894 MHz.

[0054] In some embodiments of the present disclosure, as shown in Figure 2 As shown, the switch circuit 141 includes a third switch branch, and the switching end of the switching switch SW includes a third switching end.

[0055] A second inductor L2 is arranged on the third switch branch, a first end of the second inductor L2 is electrically connected to the third switching end, and a second end of the second inductor L2 is grounded. When the first switch branch and the third switch branch are in a conductive state, that is, the second capacitor C2 and the second inductor L2 are connected, the radiation branch 110 resonates with signals in a fourth frequency band in the first communication frequency band.

[0056] For example, in the communication standard (domestic communication standard) corresponding to the first communication frequency band, the fourth frequency band includes the B8 frequency band. The B8 frequency band is an important low frequency band of the 4G LTE network, and the frequency range thereof can be 880 MHz to 960 MHz. Further, the uplink frequency thereof can be 880 MHz to 915 MHz, and the downlink frequency thereof can be 925 MHz to 960 MHz.

[0057] In some embodiments of the present disclosure, as shown in Figure 2 As shown, the matching circuit 140 further includes a first resonant circuit 142 and a second resonant circuit 143. A first end of the first resonant circuit 142 is electrically connected to the radiation branch 110, and a second end of the first resonant circuit 142 is grounded. A first end of the second resonant circuit 143 is electrically connected to the first capacitor C1, and a second end of the second resonant circuit 143 is electrically connected to the feed source 130. The first resonant circuit 142 and the second resonant circuit 143 include at least one or a combination of multiple of capacitors, inductors, and resistors.

[0058] As shown in Figure 3As shown, the first resonant circuit 142 is equipped with an inductor and a capacitor connected in series, that is, the first resonant circuit 142 is a series LC circuit, which can ensure that the signal of the target frequency band is effectively transmitted to the radiating stub 110, while suppressing the signal of the interference frequency.

[0059] like Figure 2 As shown, the second resonant circuit 143 includes two grounding branches, each with a capacitor. An inductor is provided on the main branch of the matching circuit 140 between these two grounding branches. The second resonant circuit 143 is designed with a π-type matching network. Through the second resonant circuit 143, impedance matching between the feed 130 and the radiating stub 110 is achieved, ensuring efficient signal transmission, reducing reflection loss, and allowing the resonant frequency of the circuit to be changed by adjusting the values ​​of the inductor and capacitor to adapt to the target communication frequency band.

[0060] Currently, to improve the user's communication experience, electronic devices are increasingly adopting the 4LB+6RX antenna specification. This requires the side-mounted IFA+parasitic antenna to cover not only all low-frequency bands but also the 5G N41+N78 bands, while maintaining good radiation performance for both 4G and 5G. However, in current technologies, the side-mounted IFA+parasitic antenna only covers the low-frequency + 5G N78 band, resulting in low radiation efficiency in the N41 band, which fails to meet the requirements of the 6RX antenna.

[0061] In this embodiment, the antenna assembly 100 can be a side-mounted IFA+ parasitic antenna. In the design of the matching circuit 140, a first capacitor C1 is connected in series on the main circuit, and a second capacitor C2 is provided on the first switching branch, forming a parallel connection with the first capacitor C1. The size of the first capacitor C1 is 0.3pF to 0.5pF, and the size of the second capacitor C2 is 0.9pF to 1.1pF. When the first switching branch containing the second capacitor C2 is open, the size of the series capacitor on the main circuit is about 0.3pF, allowing the operating frequency band of the antenna assembly 100 to cover the N41 band in the first communication frequency band; when the first switching branch containing the second capacitor C2 is closed, the size of the series capacitor on the main circuit becomes about 1.4pF, allowing the operating frequency band of the antenna assembly 100 to cover the B28 and N78 bands in the first communication frequency band.

[0062] Furthermore, the switching circuit 141 of the matching circuit 140 also includes a second switching branch and a third switching branch. A first inductor L1, with a value of 6nH to 6.2nH, is provided on the second switching branch. When the first switching branch containing the second capacitor C2 and the second switching branch containing the first inductor L1 are both conducting, the operating frequency band of the antenna assembly 100 can cover the B5 band of the first communication frequency band. A second inductor L2, with a value of 11.8nH to 12nH, is provided on the third switching branch. When the first switching branch containing the second capacitor C2 and the third switching branch containing the second inductor L2 are both conducting, the operating frequency band of the antenna assembly 100 can cover the B8 band of the first communication frequency band.

[0063] In summary, the antenna assembly 100 of this embodiment, through the matching circuit 140 applicable to the communication standard (domestic communication standard) corresponding to the first communication frequency band, enables the antenna assembly 100 to cover the N41 frequency band in the first communication frequency band, and improves the radiation efficiency in the N41 frequency band by 2-3 dB, meeting the performance requirements of the 6RX antenna; furthermore, the antenna assembly can also cover the B5, B8, B28 and N78 frequency bands in the first communication frequency band.

[0064] Figure 3 This is a circuit of a matching circuit shown according to an exemplary embodiment of the present disclosure. Figure 3 . Figure 4 The matching circuit 140 shown is used to tune the radiating stub 110 to resonate with the signal in the first communication frequency band. For example... Figure 3 As shown, the switch circuit 141 includes a first switch branch, a second switch branch, and a third switch branch, and may also include a reserved switch branch.

[0065] like Figure 4 As shown, the reserved switch branch is an unloaded branch with no components connected. If new components (such as capacitors, inductors, or resistors) need to be added in subsequent designs to adjust the performance of the matching circuit, the reserved switch branch can be used without redesigning the entire circuit. Furthermore, the effect of different capacitors or inductors on the resonant frequency can be tested by connecting them to the reserved switch branch. Also, if support for new frequency bands is required later, the frequency range of the matching circuit 140 can be extended by connecting appropriate components to the reserved switch branch.

[0066] Figure 4 This is a circuit of a matching circuit shown according to an exemplary embodiment of the present disclosure. Figure 4 . Figure 4 The matching circuit 140 shown is used to tune the resonance between the radiating stub 110 and the signal in the second communication band. For example... Figure 4As shown, the matching circuit 140 can include a third inductor L3. A first end of the third inductor L3 is electrically connected to the radiating branch 110, and a second end of the third inductor is electrically connected to the feed 130.

[0067] In the second communication frequency band, the radiating branch 110 resonates with a signal of a first frequency band. For example, in the second communication frequency band, the first frequency band includes a B28 frequency band and a B32 frequency band. The B28 frequency band is a low frequency band, and the uplink frequency range thereof can be 703-748 MHz, and the downlink frequency range thereof can be 758-803 MHz. The B32 frequency band is a medium frequency band, and is used for downlink only, and the downlink frequency range thereof can be 1452-1496 MHz.

[0068] In the first communication frequency band, the frequency range of the B28 frequency band can be 703-788 MHz. It can be seen that the frequency range of the B28 frequency band in the first communication frequency band is different from that in the second communication frequency band.

[0069] As shown in the first aspect, the switch circuit 141 includes a fourth switch branch, and the switching end of the switching switch SW includes a fourth switching end. Figure 4 As shown, the switch circuit 141 includes a fourth switch branch, and the switching end of the switching switch SW includes a fourth switching end.

[0070] The fourth switch branch is provided with a fourth inductor L4, a first end of the fourth inductor L4 is electrically connected to the fourth switching end, and a second end of the fourth inductor L4 is grounded. When the fourth switch branch is in a conductive state, that is, the fourth inductor L4 is connected, the radiating branch 110 resonates with a signal of a second frequency band in the second communication frequency band.

[0071] For example, in the second communication frequency band, the second frequency band includes a B5 frequency band. The frequency range of the B5 frequency band can be 824-894 MHz, and further, the uplink frequency range thereof can be 824-849 MHz, and the downlink frequency range thereof can be 869-894 MHz.

[0072] As shown in the first aspect, the switch circuit 141 includes a fourth switch branch, and the switching end of the switching switch SW includes a fourth switching end. Figure 4 As shown, the switch circuit 141 includes a fourth switch branch, and the switching end of the switching switch SW includes a fourth switching end.

[0073] The fifth switch branch is provided with a fifth inductor L5, a first end of the fifth inductor L5 is electrically connected to the fifth switching end, and a second end of the fifth inductor L5 is grounded. When the fifth switch branch is in a conductive state, that is, the fifth inductor L5 is connected, the radiating branch 110 resonates with a signal of a third frequency band in the second communication frequency band. As shown in the first aspect, the switch circuit 141 includes a fourth switch branch, and the switching end of the switching switch SW includes a fourth switching end.

[0074] Exemplarily, in the communication standard (international communication standard) corresponding to the second communication frequency band, the third frequency band includes a B8 frequency band. The frequency range of the B8 frequency band can be 880 MHz to 960 MHz, and further, the uplink frequency can be 880 MHz to 915 MHz, and the downlink frequency can be 925 MHz to 960 MHz.

[0075] It is illustrated above that, in the communication standard (domestic communication standard) corresponding to the first communication frequency band, the frequency range of the B8 frequency band can be 824 MHz to 894 MHz. It can be seen that the frequency range of the B8 frequency band in the first communication frequency band is different from that in the second communication frequency band.

[0076] In some embodiments of the present disclosure, as Figure 5 illustrated, the matching circuit 140 further includes a third resonant circuit 144 and a fourth resonant circuit 145. A first end of the third inductor L5 is electrically connected to the radiation branch 110, and a second end of the third inductor is electrically connected to the fourth resonant circuit 145; a first end of the third resonant circuit 144 is electrically connected to the radiation branch 110, and a second end of the third resonant circuit 144 is grounded; a first end of the fourth resonant circuit 145 is electrically connected to the third inductor L3, and a second end of the fourth resonant circuit 145 is electrically connected to the feed source 130. The third resonant circuit 144 and the fourth resonant circuit 145 include at least one or a combination of multiple of capacitors, inductors and resistors.

[0077] As Figure 5 illustrated, the third inductor L3 is connected between the radiation branch 110 and the fourth resonant circuit 145. By selecting a suitable inductance value, impedance matching between the radiation branch 110 and the feed source 130 can be achieved, signal reflection can be reduced, and signal transmission efficiency can be improved. In addition, the third inductor L3 and the capacitors and inductors in the fourth resonant circuit 145 work together to tune signals of a specific frequency band.

[0078] As Figure 6 illustrated, a capacitor and a resistor are connected in series on the third resonant circuit 144. By adjusting the values of the capacitor and the resistor in the third resonant circuit 144, the resonant frequency of the circuit can be changed to adapt to the target communication frequency band, and impedance matching between the radiation branch 110 and the feed source 130 can be achieved.

[0079] As Figure 6 illustrated, the fourth resonant circuit 145 includes two ground branches, and a capacitor is arranged on each ground branch. A capacitor and an inductor are connected in series on the main circuit of the matching circuit 140 between the two ground branches. By adjusting the values of the capacitor and the inductor in the fourth resonant circuit 145, the resonant frequency of the circuit can be changed to adapt to the target communication frequency band.

[0080] In the embodiment of the present disclosure, the antenna assembly 100 can be a side IFA+ parasitic antenna, and in the design of the matching circuit 140, the matching circuit 140 includes a switch circuit 141, a third inductor L3, a third resonant circuit 144, and a fourth resonant circuit 145. The switch circuit 141 includes a fourth switch branch and a fifth switch branch in parallel, and is respectively provided with a fourth inductor L4 and a fifth inductor L5, wherein the fourth inductor L4 can have a size of 13nH, and the fifth inductor L5 can have a size of 7.5nH. The third resonant circuit 144 is provided with a capacitor and a resistor in series, wherein the capacitor can have a size of 1.4pF, and the resistor can have a size of 0. The third resonant circuit 145 includes two ground branches, and is respectively provided with a capacitor with a size of 0.7pF and a capacitor with a size of 1.1pF, and is provided with a capacitor and an inductor in series between the two ground branches, wherein the capacitor can have a size of 1.1pF, and the inductor can have a size of 2.5nH.

[0081] When the switch circuit 141 is in the off state, the working frequency band of the antenna assembly 100 can cover the B28 frequency band and the B32 frequency band in the second communication frequency band. When the fourth switch branch is in the on state, the working frequency band of the antenna assembly 100 can cover the B5 frequency band in the second communication frequency band. When the fifth switch branch is in the on state, the working frequency band of the antenna assembly 100 can cover the B8 frequency band in the second communication frequency band.

[0082] In summary, the antenna assembly 100 of the embodiment of the present disclosure, by using the matching circuit 140 suitable for the communication standard (domestic communication standard) corresponding to the second communication frequency band, makes the antenna assembly 100 cover the B28 frequency band, the B32 frequency band, the B5 frequency band and the B8 frequency band in the second communication frequency band, and the radiation efficiency in the N41 frequency band is improved by 2-3dB, meeting the index requirements of the 6RX antenna; and the antenna assembly can also cover the B5 frequency band, the B8 frequency band, the B28 frequency band and the N78 frequency band in the first communication frequency band. Moreover, the average radiation efficiency of the matching circuit 140 in the B32 frequency band is-5dB, the measured OTA (Over-the-Air) data exceeds the operator index by 3dB, and has good radiation performance.

[0083] Figure 6 is a structural diagram of another antenna assembly according to an exemplary embodiment of the present disclosure. As shown in Figure 6 The antenna assembly 100 includes, in addition to the radiation branch 110, the parasitic branch 120, the feed 130, the matching circuit 140, the ground muscle position 150, and the ground muscle position 150 is a ring opening structure.

[0084] Antenna assembly 100 is disposed on the side of the electronic device, and a grounding rib 150 with an annular opening structure can be realized using the flexible printed circuit (FPC) and mid-frame inside the electronic device. In the side screen area of ​​the electronic device, the FPC is designed with a curved shape to adapt to the compact layout of the internal space of the electronic device. The mid-frame is a structural support component inside the electronic device and can be made of metal. The FPC can be connected to the circuit board or screen of the electronic device through perforations in the mid-frame. These perforations provide a physical channel for the FPC to pass through the mid-frame and connect to other components. In this embodiment, the perforation structure originally used to connect the circuit board and the screen can be designed as a grounding rib with an annular opening structure, allowing current to flow along an annular path.

[0085] Figure 6 This is a schematic diagram illustrating the flow of current along an annular opening structure according to an embodiment of the present disclosure. In some embodiments of the present disclosure, such as... Figure 7 As shown, the antenna assembly 100 also includes a connector 160 with a bending angle, which is used to connect the matching circuit 140. Figure 7 (not shown in the image) and radial branches 110.

[0086] from Figure 7 It can be seen that when the radio frequency signal passes through the feed 130 ( Figure 8 When the current (not shown) is input to the antenna assembly 100, it flows along the annular opening structure of the radiating stub 110 and the grounding rib position 150, forming an annular return current path at the grounding rib position 150, which increases the circuit path.

[0087] Because low-frequency signals have longer wavelengths, a longer current path is usually required to achieve efficient radiation. In this embodiment, the grounding rib 150 is configured as an annular opening structure, providing an additional low-frequency current path. This increases the number of low-frequency current paths, allowing the low-frequency signal to be radiated more effectively, which is beneficial for improving radiation efficiency in the low-frequency band.

[0088] Figure 8 This is a schematic diagram of a connector according to an embodiment of the present disclosure. Connector 160 needs to ensure that signals can be efficiently transmitted from matching circuit 140 to radiating stub 110, while reducing signal reflection and energy loss.

[0089] Because the metallic environment around connector 160 is complex, such as Figure 2As shown, the periphery of the connecting piece 160 is surrounded by cable lines 200 and FPCs 300, which metal components can interfere with the radiation performance of the antenna and affect the stability of signal transmission. In order to reduce interference, the connecting piece 160 needs to be as far away from the cable lines 200 and FPCs 300 as possible. However, the distance between the connecting piece 160 and the cable lines 200 and FPCs 300 is very limited, so the connecting piece 160 is designed to have a bending angle, so that the connecting piece 160 can be as far away from the cable lines 200 and FPCs 300 as possible, so as to better adapt to the surrounding metal environment.

[0090] Due to the complex spatial layout inside the electronic device, the design of different devices may differ, so the metal environment around the connecting piece 160 may vary depending on the device model or design. In order to ensure the optimization of the antenna performance, the bending angle of the connecting piece 160 can be adaptively adjusted according to the specific surrounding environment, such as Figure 3 As shown, the connecting piece 160 can be an S-shaped spring. For example, according to the specific positions of the cable lines 200 and FPCs 300, the bending angle of the connecting piece 160 is adjusted to ensure that the distance between it and these components is greater than a minimum distance, such as 0.2mm or 0.3mm.

[0091] In the embodiments of the present disclosure, the bending angle of the connecting piece 160 is designed to adapt to the metal environment around the connecting piece 160, improve the antenna clearance, and thus ensure the stability of the radiation performance.

[0092] Figure 4 is a structural diagram of an electronic device according to an exemplary embodiment of the present disclosure. As shown in Figure 2 The electronic device includes an antenna assembly 100, which is arranged on the side of the electronic device.

[0093] For example, the electronic device can be a mobile phone, a tablet computer, an e-book reader, an MP3 player, an MP4 player, a notebook computer, a car machine or a desktop computer, a portable terminal, a laptop terminal, a desktop terminal, a sports camera, a drone, a monitor camera, and the like.

[0094] The electronic device of the embodiments of the present disclosure includes the above-mentioned antenna assembly 100. In order to adapt to the communication frequency band standards in different regions, the matching circuit 140 in the antenna assembly 100 adopts a flexible design scheme: for regions facing the first communication frequency band standard, the matching circuit 140 can adopt the circuit design shown in Figure 3 or Figure 4 so as to cover the first communication frequency band; for regions facing the second communication frequency band standard, the matching circuit 140 can adopt the circuit design shown in Figure 8 so as to cover the second communication frequency band.

[0095] By comparison Figure 9 (or Figure 9 ) and Figure 9 It can be found from the matching circuit shown in the figure that two sets of matching topologies coexist in the design at the beginning. The core advantage of this design is that by reasonably planning the positions of series and parallel elements in the matching circuit, the coverage of different frequency bands is realized. The two sets of matching circuits do not need to change the PCB wiring and share the same wiring layout. Only by adjusting the element configuration (such as capacitors, inductors, etc.) in the matching circuit can different communication frequency band standards be adapted. This design not only simplifies the PCB layout, but also improves the flexibility and versatility of the antenna assembly 100, so that it can adapt to the communication needs of different regions without changing the hardware wiring.

[0096] In some embodiments of the present disclosure, as shown in Figure 8 , the electronic device further includes a battery 400 and a shielding device.

[0097] Figure 10 is a schematic diagram of a shielding device according to an exemplary embodiment of the present disclosure. As shown in Figure 10 , the shielding device 500 is arranged on the side wall 410 of the battery 400 close to the antenna assembly 100. Exemplarily, the length of the shielding device 500 can be 14 mm, the width can be 1 mm, and the thickness can be 0.4 mm.

[0098] As shown in ​ , a groove 421 is arranged on the bending area 420 of the battery 400 close to the antenna assembly 100.

[0099] In the embodiments of the present disclosure, by adding a shielding device to the side wall of the battery, the electromagnetic interference of the battery on the antenna can be effectively shielded; and by designing a groove on the bending area of the battery, the space for the cable to run in this area is expanded, the radiation environment of the antenna is improved, and thus the radiation efficiency of the antenna is improved.

[0100] As can be seen from ​ , in addition to the antenna assembly 100 and the battery 400, the electronic device also includes other antenna assemblies, USB ports, SIM card slots, and circuit boards, etc., wherein the circuit board is used to place antenna matching devices.

[0101] It should be noted that the electronic device in the embodiments of the present disclosure can be a foldable electronic device, and can be a straight-screen electronic device (non-foldable electronic device). The antenna assembly can be arranged on any side of the electronic device.

[0102] Of course, in actual application, the position of the antenna assembly can be flexibly adjusted according to the specific form, size, internal structure and antenna performance requirements of the electronic device, and the embodiments of the present disclosure do not limit this.

[0103] ​ is a block diagram of an electronic device illustrated in accordance with some embodiments of the present disclosure. Referring to ​ , the electronic device 100 can also include one or more of the following components: a processing component 1002, a memory 1004, a power supply component 1006, a multimedia component 1008, an audio component 1010, an input / output (I / O) interface 1012, a sensor component 1014, and a communication component 1016.

[0104] The processing component 1002 usually controls overall operations of the electronic device 1000, such as operations associated with displaying, making phone calls, data communications, camera operations and recording operations. The processing component 1002 can include one or more processors 1020 to execute instructions to complete all or part of steps of the above methods. In addition, the processing component 1002 can include one or more modules to facilitate interaction between the processing component 1002 and other components. For example, the processing component 1002 can include a multimedia module to facilitate the interaction between the multimedia component 1008 and the processing component 1002.

[0105] The memory 1004 is configured to store various types of data to support operations of the electronic device 1000. Examples of these data include instructions for any application or method operating on the electronic device 1000, contact data, phonebook data, messages, pictures, videos, and the like. The memory 1004 can be implemented by any type of volatile or non-volatile storage devices or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk or optical disk.

[0106] The power supply component 1006 provides power for various components of the electronic device 1000. The power supply component 1006 can include a power supply management system, one or more power supplies, and other components associated with generating, managing and distributing power for the electronic device 1000.

[0107] The multimedia component 1008 includes a screen to provide an output interface between the electronic device 1000 and a user. In some embodiments, the screen can include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen can be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense a touch, a slide, and a gesture on the touch panel. The touch sensor can not only sense a boundary of a touching or sliding action, but also detect duration and pressure related to the touching or sliding action. In some embodiments, the multimedia component 1008 includes a front camera and / or a rear camera. The front camera and / or the rear camera can receive external multimedia data when the electronic device 1000 is in an operation mode, such as a shooting mode or a video mode. Each of the front and rear camera can be a fixed optical lens system or have a focal length and optical zooming capability.

[0108] The audio component 1010 is configured to output and / or input an audio signal. For example, the audio component 1010 includes a microphone (MIC) configured to receive an external audio signal when the electronic device 1000 is in an operation mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal can be further stored in the memory 1004 or transmitted via the communication component 1016. In some embodiments, the audio component 1010 further includes a speaker for outputting an audio signal.

[0109] The I / O interface 1012 provides an interface between the processing component 1002 and peripheral interface modules, which can be a keypad, a click wheel, buttons, and the like. The buttons can include, but are not limited to, a home button, a volume button, a start button, and a lock button.

[0110] The sensor component 1014 includes one or more sensors to provide various state assessments for the electronic device 1000. For example, the sensor component 1014 can detect an open / closed position of the device 1000, relative positioning of components, such as a display and a keypad of the electronic device 1000, a change in position of the electronic device 1000 or a component of the electronic device 1000, presence or absence of user contact with the electronic device 1000, an orientation or acceleration / deceleration of the electronic device 1000, and a temperature change of the electronic device 1000. The sensor component 1014 can include a proximity sensor configured to detect presence of a nearby object without any physical touch. The sensor component 1014 can further include a light sensor such as a CMOS or CCD image sensor for use in an imaging application. In some embodiments, the sensor component 1014 can further include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0111] Communication component 1016 is configured to facilitate wired or wireless communication between electronic device 1000 and other devices. Electronic device 1000 can access wireless networks based on communication standards, such as WiFi, 3G, 4G, 5G, other communication standards, or combinations thereof. In some embodiments of this disclosure, communication component 1016 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In some embodiments of this disclosure, communication component 1016 further includes a near-field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on radio frequency identification (RFID) technology, Infrared Data Association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0112] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the appended claims.

[0113] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. An antenna assembly, characterized in that, The antenna assembly includes: Radiating branches; Parasitic branch, with a slit between the radiating branch and the parasitic branch; A feed source, the feed source being electrically connected to the radiating branch; A matching circuit is electrically connected between the radiating stub and the feed source; the matching circuit includes at least a switching circuit; the switching circuit includes a switching switch and multiple switching branches, the common terminal of the switching switch is electrically connected to the radiating stub, and the switching terminal of the switching switch is switched to connect to the multiple switching branches; The matching circuit is used to tune the radiating stub to resonate with signals from multiple frequency bands.

2. The antenna assembly according to claim 1, characterized in that, The matching circuit also includes a first capacitor; The first terminal of the first capacitor is electrically connected to the radiating branch, and the second terminal of the first capacitor is electrically connected to the feed source; When the switching switch is in the off state, the radiating branch resonates with the signal of the first frequency band in the first communication frequency band.

3. The antenna assembly according to claim 2, characterized in that, The plurality of switch branches include a first switch branch, and the switching terminal of the switching switch includes a first switching terminal; A second capacitor is provided on the first switch branch. The first end of the second capacitor is electrically connected to the first switching terminal, and the second end of the second capacitor is electrically connected between the feed source and the first capacitor. When the first switch branch is in the conducting state, the radiating stub resonates with the signal of the second frequency band in the first communication frequency band.

4. The antenna assembly according to claim 3, characterized in that, The plurality of switch branches include a second switch branch, and the switching terminal of the switching switch includes a second switching terminal; The second switch branch is provided with a first inductor, the first end of the first inductor is electrically connected to the second switching terminal, and the second end of the first inductor is grounded; When the first switch branch and the second switch branch are in the conducting state, the radiating stub resonates with the signal of the third frequency band in the first communication frequency band.

5. The antenna assembly according to claim 3, characterized in that, The plurality of switch branches include a third switch branch, and the switching terminal of the switching switch includes a third switching terminal; The third switch branch is provided with a second inductor, the first end of the second inductor is electrically connected to the third switching terminal, and the second end of the second inductor is grounded. When the first switch branch and the third switch branch are in the conducting state, the radiating stub resonates with the signal of the fourth frequency band in the first communication frequency band.

6. The antenna assembly according to any one of claims 2 to 5, characterized in that, The matching circuit further includes a first resonant circuit and a second resonant circuit, wherein the first resonant circuit and the second resonant circuit include at least one or more combinations of capacitors, inductors and resistors. The first terminal of the first capacitor is electrically connected to the radiating stub, and the second terminal of the first capacitor is electrically connected to the second resonant circuit. The first terminal of the first resonant circuit is electrically connected to the radiating stub, and the second terminal of the first resonant circuit is grounded. The first terminal of the second resonant circuit is electrically connected to the first capacitor, and the second terminal of the second resonant circuit is electrically connected to the feed source.

7. The antenna assembly according to claim 1, characterized in that, The matching circuit also includes a third inductor; The first end of the third inductor is electrically connected to the radiating branch, and the second end of the third inductor is electrically connected to the feed source; When the switching switch is in the off state, the radiating stub resonates with the signal of the first frequency band in the second communication frequency band.

8. The antenna assembly according to claim 7, characterized in that, The plurality of switch branches include a fourth switch branch, and the switching terminal of the switching switch includes a fourth switching terminal; A fourth inductor is provided on the fourth switch branch, the first end of the fourth inductor is electrically connected to the fourth switching terminal, and the second end of the fourth inductor is grounded; When the fourth switch branch is in the conducting state, the radiating stub resonates with the signal of the second frequency band in the second communication frequency band.

9. The antenna assembly according to claim 7, characterized in that, The plurality of switch branches include a fifth switch branch, and the switching terminal of the switching switch includes a fifth switching terminal; A fifth inductor is provided on the fifth switch branch, the first end of the fifth inductor is electrically connected to the fifth switching terminal, and the second end of the fifth inductor is grounded; When the fifth switch branch is in the conducting state, the radiating stub resonates with the signal of the third frequency band in the second communication frequency band.

10. The antenna assembly according to any one of claims 7 to 9, characterized in that, The matching circuit further includes a third resonant circuit and a fourth resonant circuit, wherein the third resonant circuit and the fourth resonant circuit include at least one or more combinations of capacitors, inductors and resistors. The first end of the third inductor is electrically connected to the radiating branch, and the second end of the third inductor is electrically connected to the fourth resonant circuit; The first terminal of the third resonant circuit is electrically connected to the radiating stub, and the second terminal of the third resonant circuit is grounded. The first terminal of the fourth resonant circuit is electrically connected to the third inductor, and the second terminal of the fourth resonant circuit is electrically connected to the feed source.

11. The antenna assembly according to claim 1, characterized in that, The antenna assembly includes a grounding rib, which has an annular opening structure.

12. The antenna assembly according to claim 1, characterized in that, The antenna assembly also includes a connector with a bending angle for connecting the matching circuit and the radiating stub.

13. An electronic device, characterized in that, The electronic device includes the antenna assembly as described in any one of claims 1 to 12.

14. The electronic device according to claim 13, characterized in that, The electronic device also includes a battery and a shielding device; The shielding device is disposed on the side wall of the battery near the antenna assembly; The battery includes a bent region near the antenna assembly, and the bent region has a groove.

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