Antenna assembly and electronic equipment

Abstract

The invention relates to an antenna assembly and electronic equipment. The antenna assembly comprises a main circuit board; the antenna comprises an antenna radiating body; the first end of the signal transmission line is electrically connected with the main circuit board, and the second end of the signal transmission line comprises a first feed end and a second feed end; wherein the first feed end and the second feed end are electrically connected with the antenna radiator. According to the antenna assembly, the main circuit board and the antenna radiator are connected through the signal transmission line, and the signal transmission line is provided with the first feed end and the second feed end, so that the antenna assembly supports signal radiation of two frequencies, the hardware cost required by arranging two signal transmission lines is further saved, and the antenna assembly is convenient to use. And meanwhile, the matched hardware cost is also reduced, and the available area of the circuit board is released.

Description

Technical Field

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

[0002] In the development of smartphone hardware, hardware cost has always been one of the inevitable topics. How to effectively reduce hardware cost from the R&D and design level without sacrificing user experience has always been a challenging topic.

[0003] The bottom main standard frame antenna used by mainstream electronic devices on the market generally uses an antenna switch to switch between different medium and high frequency bands to ensure bandwidth and antenna efficiency. On this basis, in order to enable electronic devices to support signal reception in the N78 frequency band, an additional signal transmission line is generally required to achieve this. The antenna switch and the additional signal transmission line themselves increase the hardware cost to a certain extent. In order for the antenna switch and the newly added signal transmission line to work properly, the electronic device needs to be equipped with peripheral circuits that match the antenna switch and the signal transmission line, such as switch tuning circuits, cable sockets, etc., which will further increase the production cost of the electronic device. Summary of the invention

[0004] In order to overcome the problems existing in the related art, the present disclosure provides an antenna assembly and an electronic device.

[0005] According to a first aspect of an embodiment of the present disclosure, an antenna assembly is provided, comprising: a main circuit board; an antenna, the antenna comprising an antenna radiator; a signal transmission line, a first end of the signal transmission line being electrically connected to the main circuit board, and a second end of the signal transmission line comprising a first feeding end and a second feeding end; wherein the first feeding end and the second feeding end are electrically connected to the antenna radiator.

[0006] In some embodiments, the antenna radiator includes: a first radiator, the first radiator is electrically connected to the first feeding end and the second feeding end; a second radiator, the first radiator and the second radiator are arranged with a gap between them, wherein the antenna radiates a first frequency through the first radiator, and the antenna radiates a second frequency through the first radiator and the second radiator.

[0007] In some embodiments, the antenna includes: a first feed point, the first feed point is arranged on the first radiator, and the first feed point is electrically connected to the first feeding end; a second feed point, the second feed point is arranged on the first radiator, and the second feed point is electrically connected to the second feeding end; a first grounding point, the first grounding point is arranged on the first radiator; a second grounding point, the second grounding point is arranged on the second radiator, wherein the first feed point is located between the gap and the second feed point, and the second feed point is located between the first feed point and the first grounding point.

[0008] In some embodiments, the distance between the first feeding point and the first grounding point corresponds to a quarter wavelength of the first frequency.

[0009] In some embodiments, the first frequency is a mid-high frequency.

[0010] In some embodiments, the distance between the first feeding point and the first grounding point is 20 mm.

[0011] In some embodiments, the distance between the second feeding point and the second grounding point corresponds to a quarter wavelength of the second frequency.

[0012] In some embodiments, the distance between the second feed point and the second ground point is 19.5 mm.

[0013] In some embodiments, the second frequency is an N78 frequency.

[0014] In some embodiments, the antenna assembly includes: a feed source, which is arranged on the main circuit board; a first matching circuit, which is arranged on the signal transmission line, the first end of the first matching circuit is electrically connected to the feed source, and the second end of the first matching circuit is electrically connected to the first feed point; a second matching circuit, which is arranged on the signal transmission line, the first end of the second matching circuit is electrically connected to the feed source, and the second end of the second matching circuit is electrically connected to the second feed point.

[0015] In some embodiments, the first matching circuit includes: a first resonance module, the first resonance module includes a first capacitor and a first inductor connected in parallel, the first resonance module is electrically connected to the feed source; a third capacitor, the third capacitor is connected in parallel to the first resonance module; a third inductor, the third inductor is connected in series with the first resonance module, the third inductor is electrically connected to the first feeding point; and a fourth inductor, the fourth inductor is connected in parallel to the third inductor.

[0016] In some embodiments, the second matching circuit includes: a second resonance module, the second resonance module includes a second capacitor and a second inductor connected in parallel.

[0017] In some embodiments, the antenna assembly includes a secondary circuit board, which is spaced apart from the main circuit board; the second end of the signal transmission line is electrically connected to the secondary circuit board and is divided into a first branch and a second branch, wherein the first feeding end is one end of the first branch, and the second feeding end is one end of the second branch.

[0018] In some embodiments, the main circuit board is provided with a radio frequency front end, and the auxiliary circuit board is provided with a wire holder; the first end of the signal transmission line is electrically connected to the radio frequency front end; the second end of the signal transmission line is connected to the wire holder and is divided into the first branch line and the second branch line.

[0019] According to a second aspect of an embodiment of the present disclosure, an electronic device is provided, comprising: a middle frame, at least a portion of which is a metal part; and the antenna assembly described in any one of the first aspects, at least a portion of which is the antenna radiator.

[0020] The technical solution provided by the embodiment of the present disclosure may include the following beneficial effects: the present disclosure connects the main circuit board and the antenna radiator by using a signal transmission line, and provides a first feeding end and a second feeding end on the signal transmission line. Thus, the antenna assembly supports the radiation of two signal frequencies while eliminating the hardware cost required for setting up two signal transmission lines, while reducing the hardware cost of the signal transmission lines, reducing the stacking pressure of the electronic equipment, and releasing the available area of ​​the auxiliary circuit board.

[0021] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0023] Figure 1 It is a schematic structural diagram of an antenna assembly according to an exemplary embodiment.

[0024] Figure 2 The figure is a schematic diagram of the structure of an antenna radiator of an antenna assembly according to an exemplary embodiment.

[0025] Figure 3 is a circuit connection diagram of a matching circuit of an antenna assembly according to an exemplary embodiment.

[0026] Figure 4 is an antenna return loss diagram of an antenna assembly according to an exemplary embodiment.

[0027] Figure 5 is a diagram showing antenna efficiency of an antenna assembly according to an exemplary embodiment.

[0028] Figure 6 The diagram is a schematic structural diagram of an electronic device according to an exemplary embodiment. DETAILED DESCRIPTION

[0029] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0030] In the related technology, the RF front-end device of the main board transmits the medium and high frequency signals and N78 RF signals to the sub-board through two independent signal transmission lines. The medium and high frequency signals and N78 signals are framed at two frame points respectively, and the medium and high frequency signals need to be used in conjunction with a switching device to achieve switching of the medium and high frequency states.

[0031] This solution cannot simplify the switching devices, and requires two signal transmission lines to achieve coverage of medium and high frequency signals and N78. The switching devices, two signal transmission lines and supporting hardware devices make this solution costly, and the circuit design will also occupy more board area.

[0032] In another design, the medium and high frequency signals and N78 signals are mixed in the RF front-end device and transmitted to the sub-board through a signal transmission line, and the medium and high frequency signals and N78 signals are framed at a frame point. However, a switch device must be added to the line to realize the switching of the medium and high frequency states.

[0033] This solution also cannot simplify the switching devices. Switching control of the switching devices is required to achieve coverage of medium and high frequency signals and N78 signals. The switching devices and supporting hardware devices make the cost of this solution still relatively high, and the circuit design will also occupy more board area.

[0034] In order to solve the above technical problems, according to an embodiment of the present disclosure, an antenna assembly is provided, which includes: a main circuit board; an antenna radiator; a signal transmission line, wherein the first end of the signal transmission line is electrically connected to the main circuit board, and the second end of the signal transmission line includes a first feeding end and a second feeding end; wherein the first feeding end and the second feeding end are electrically connected to the antenna radiator.

[0035] The present invention uses a signal transmission line to connect the main circuit board and the antenna radiator, and provides a first feeding end and a second feeding end on the signal transmission line. Thus, the antenna assembly supports the radiation of two signal frequencies, and the hardware cost required for setting two signal transmission lines is eliminated, and the hardware cost of the signal transmission line is reduced, the stacking pressure of the electronic equipment is reduced, and the available area of ​​the auxiliary circuit board is released.

[0036] It can be understood that the antenna assembly involved in the present disclosure can be applicable to any terminal listed below.

[0037] It is understandable that the terminal involved in the present disclosure may also be referred to as a terminal device, a user equipment (User Equipment, UE), a mobile station (Mobile Station, MS), a mobile terminal (Mobile Terminal, MT), etc., which is a device that provides voice and / or data connectivity to users. For example, the terminal may be a handheld device with a wireless connection function, a vehicle-mounted device, etc. At present, some examples of terminals are: a smart phone (Mobile Phone), a pocket computer (Pocket Personal Computer, PPC), a handheld computer, a personal digital assistant (Personal Digital Assistant, PDA), a laptop computer, a tablet computer, a wearable device, or a vehicle-mounted device, etc. In addition, when it is a vehicle-to-everything (V2X) communication system, the terminal device may also be a vehicle-mounted device. It should be understood that the embodiments of the present disclosure do not limit the specific technology and specific device form adopted by the terminal.

[0038] Figure 1 It is a schematic structural diagram of an antenna assembly according to an exemplary embodiment. Figure 2 The figure is a schematic diagram of the structure of an antenna radiator of an antenna assembly according to an exemplary embodiment. Figure 3 is a circuit connection diagram of a matching circuit of an antenna assembly according to an exemplary embodiment.

[0039] In some embodiments, Figure 1 , Figure 2 and Figure 3As shown, the antenna assembly includes: a main circuit board 1, a sub-circuit board 2, an antenna, a signal transmission line 4 and a matching circuit 5, and the antenna includes an antenna radiator 3.

[0040] The main circuit board 1 can be provided with a processor and a receiver, so that the main circuit board 1 can generate a signal current of a specific frequency, thereby enabling the antenna component to transmit a wireless signal of a specific frequency. The main circuit board 1 can also receive the wireless signal received by the antenna component through the receiver and perform signal analysis to obtain information in the received wireless signal.

[0041] The auxiliary circuit board 2 can be spaced apart from the main circuit board 1 and electrically connected to the main circuit board 1 to provide a transfer for signal transmission of the main circuit board 1 and provide a fixed installation position for other electronic devices.

[0042] The antenna radiator 3 can radiate radio waves of a specific frequency when a current of a specific frequency is connected, thereby realizing the wireless signal transmission function of the antenna assembly. The antenna radiator 3 can also receive radio waves of a specific frequency and generate a current of a specific frequency, thereby realizing the wireless signal reception function of the antenna assembly. The antenna radiator 3 can be arranged adjacent to the auxiliary circuit board 2 so that the antenna radiator 3 can be electrically connected to the auxiliary circuit board 2.

[0043] The signal transmission line 4 may be used to transmit signal current. For example, the signal transmission line 4 may be a coaxial line. The signal current transmitted by the signal transmission line 4 may be a wireless signal current used to enable the antenna radiator 3 to radiate wireless signals.

[0044] The first end of the signal transmission line 4 can be electrically connected to the main circuit board 1, and the second end of the signal transmission line 4 can be electrically connected to the auxiliary circuit board 2. The signal transmission line 4 can transmit a first frequency signal current that can cause the antenna radiator 3 to radiate a first signal and a second frequency signal current that can cause the antenna radiator 3 to radiate a second signal.

[0045] The second end of the signal transmission line 4 may include a first feeding end 401 and a second feeding end 402 , and the first feeding end 401 and the second feeding end 402 may be electrically connected to the antenna radiator 3 .

[0046] Exemplarily, the second end of the signal transmission line 4 can be divided into a first branch 41 and a second branch 42, the first feeding end 401 can be one end of the first branch 41, the second feeding end 402 can be one end of the second branch 42, and the first branch 41 can be electrically connected to the antenna radiator 3, and the second branch 42 can be electrically connected to the antenna radiator 3.

[0047] The first frequency signal current and the second frequency signal current are mixed and transmitted in the signal transmission line and separated when passing through the second end of the signal transmission line 4, wherein the first frequency signal current flows into the first branch line 41 and is electrically connected to the antenna radiator 3, and the second frequency signal current flows into the second branch line 42 and is electrically connected to the antenna radiator 3.

[0048] Through the connection and transmission relationship between the signal transmission line 4, the first branch line 41 and the second branch line 42, the antenna assembly supports the radiation of two signal frequencies while eliminating the hardware cost required to set up two signal transmission lines 4. At the same time, the hardware cost matching the two signal transmission lines 4 is reduced, which can reduce the internal stacking pressure of the electronic device and release the available area of ​​the secondary circuit board 2.

[0049] The matching circuit 5 can be used to adjust the radiation parameters of the antenna radiator 3 so that the radiation parameters of the antenna radiator 3 meet the design requirements.

[0050] The matching circuit 5 can be set on the first branch line 41 to adjust the radiation parameters of the antenna radiator 3 radiating the first frequency. The matching circuit 5 can enable the antenna radiator 3 to generate two resonant waves when radiating the first frequency, so that the antenna radiator 3 can completely cover the first frequency with a radiation mode. Therefore, there is no need to set a switching device on the signal transmission line 4, the first branch line 41 and the second branch line 42 to switch and control the radiation mode of the antenna radiator 3 when radiating the first frequency, thereby eliminating the hardware cost required for setting the switching device and the hardware cost matching the switching device. This can reduce the internal stacking pressure of the electronic device and release the available area of ​​the secondary circuit board 2.

[0051] The matching circuit 5 may also be arranged on the second branch line 42 , so as to adjust the radiation parameters of the antenna radiator 3 radiating the second frequency.

[0052] In some embodiments, Figure 1 As shown, the main circuit board 1 may be provided with a radio frequency front end 101 , and the first end of the signal transmission line 4 is electrically connected to the radio frequency front end 101 .

[0053] The RF front end 101 can be used for mutual conversion between binary signals and radio electromagnetic wave signals during signal transmission and signal reception: in the process of transmitting signals, the binary signals are converted into high-frequency radio electromagnetic wave signals; in the process of receiving signals, the received electromagnetic wave signals are converted into binary digital signals. The RF front end 101 can convert binary signals into electromagnetic wave signals and input them into the signal transmission line 4.

[0054] The auxiliary circuit board 2 may be provided with a wire holder 201 , and the second end of the signal transmission line 4 is connected to the wire holder 201 .

[0055] The wire holder 201 can provide fixation for the second end of the signal transmission line 4 . The second end of the signal transmission line 4 can be buckled into the wire holder 201 and form an electrical connection with the wire holder 201 .

[0056] The signal transmission line 4 can be divided into a first branch line 41 and a second branch line 42 at the line holder 201 . The first frequency signal current in the signal transmission line 4 is input into the first branch line 41 , and the second frequency signal current in the signal transmission line 4 is input into the second branch line 42 .

[0057] Figure 2 The figure is a schematic diagram of the structure of an antenna radiator of an antenna assembly according to an exemplary embodiment.

[0058] In some embodiments, Figure 2 As shown, the antenna radiator 3 may include: a first radiator 10 and a second radiator 20 .

[0059] The first radiator 10 is electrically connected to the first branch line 41 and the second branch line 42. The first radiator 10 can radiate the first frequency outward when the first frequency signal current of the first branch line 41 is connected, thereby realizing the radiation function of the antenna component to the first frequency.

[0060] The first radiator 10 may be a main radiator in the antenna assembly, and illustratively, the length of the first radiator 10 may be 20 mm, and the second radiator 20 may be a secondary radiator in the antenna assembly, and illustratively, the length of the second radiator 20 may be 6.5 mm. When the second frequency signal current of the second branch line 42 is connected, the first radiator 10 may be electrically coupled with the second radiator 20, so that the second radiator 20 may generate an induced current and radiate a corresponding wireless signal, so that the first radiator 10 and the second radiator 20 jointly radiate the second frequency, thereby realizing the radiation function of the antenna assembly for the second frequency.

[0061] The first radiator 10 and the second radiator 20 are arranged at intervals. Exemplarily, the width of the gap 30 formed by the interval between the first radiator 10 and the second radiator 20 is 1 mm, which makes the first radiator 10 and the second radiator 20 form a slot antenna. The slot antenna can be used on electronic devices with all-metal shells, so that the antenna component is protected from the shielding effect of the metal shell and a better radiation environment is obtained, thereby improving the radiation performance of the antenna component. The slot antenna also has the advantages of firm structure, simple and compact, easy processing, convenient feeding, and simple installation.

[0062] In some embodiments, Figure 2 As shown, the antenna radiator 3 may include: a first feeding point 101 , a second feeding point 102 , a first grounding point 103 and a second grounding point 201 .

[0063] The first feeding point 101 can be arranged on the first radiator 10, such as Figure 2 As shown, the first feed point 101 may be disposed close to the slot. For example, the first feed point 101 may be located between the slot 30 and the second feed point 102 .

[0064] The first grounding point 103 may be disposed on the first radiator 10 , for example, the first grounding point 103 may be disposed farther from the gap than the first feeding point 101 . For example, the second feeding point 102 may be located between the first feeding point 101 and the first grounding point 103 .

[0065] Exemplarily, the first radiator 10 may be disposed at a distance of 3 mm from the gap 30. The first feeding point 101 may be electrically connected to the first feeding end 401 of the first branch line 41, and the first frequency signal current of the first branch line 41 may be fed into the first radiator 10 through the first feeding point 101, so that the first frequency signal current may flow in the first radiator 10, so that the first radiator 10 radiates the first frequency.

[0066] The second feed point 102 may be disposed on the first radiator 10. For example, the second feed point 102 may be disposed at a position 13 mm away from the gap 30. The second feed point 102 may be electrically connected to the second feeding end 402 of the second branch line 42. The second frequency signal current of the second branch line 42 may be fed into the first radiator 10 through the second feed point 102, so that the second frequency signal current may flow in the first radiator 10, so that the first radiator 10 and the second radiator 20 jointly radiate the second frequency.

[0067] The first grounding point 103 can be set on the first radiator 10. The first grounding point 103 can provide a reference ground for the antenna radiator 3, thereby facilitating the debugging of the radiation parameters of the antenna radiator 3. Exemplarily, the first grounding point 103 can be set at a position 20 mm away from the gap 30, thereby improving the radiation performance of the antenna radiator 3.

[0068] The second grounding point 201 can be set on the second radiator 20. The second grounding point 201 can provide a reference ground for the antenna radiator 3, thereby facilitating the debugging of the radiation parameters of the antenna radiator 3. Exemplarily, the second grounding point 201 can be set at a position 6.5 mm away from the gap 30, thereby improving the radiation performance of the antenna radiator 3.

[0069] In some embodiments, the antenna assembly further includes an electrical connector, one end of which may be connected to the first branch line 41, and the other end of which may be connected to the first radiator 10. Since there is often a step between the first radiator 10 and the first branch line 41, the first branch line 41 and the first radiator 10 may be electrically connected smoothly by providing the electrical connector.

[0070] Based on the same principle, the electrical connector can be connected to the second branch line 42 , and the other end of the electrical connector can be connected to the first radiator 10 , so that the second branch line 42 can smoothly achieve an electrical connection with the first radiator 10 .

[0071] In some embodiments, the electrical connector may be a spring sheet, which has elasticity so that the spring sheet can adjust the height and form a compact connection structure in a narrow space.

[0072] In some embodiments, Figure 2 As shown, when the first feed point 101 feeds the first frequency signal current in the first branch line 41 into the antenna radiator 3, the antenna radiator 3 between the first feed point 101 and the first grounding point 103 can radiate the first frequency, that is, the first frequency is covered by the full length radiation of the first radiator 10, and the distance between the first feed point 101 and the first grounding point 103 can correspond to one quarter wavelength of the first frequency.

[0073] In some embodiments, the first frequency may be a medium or high frequency. In this case, the radiation length of the first radiator 10 corresponds approximately to one quarter of the wavelength of the medium or high frequency, that is, the quarter-wavelength mode radiation of the antenna radiator 3 covers the first frequency.

[0074] However, the present disclosure is not limited thereto, and by changing the radiation parameters of the matching circuit 5 and the antenna radiator 3, the first frequency can be changed to a frequency in another frequency band, thereby meeting the design requirements of the antenna component, and the radiation pattern of the antenna radiator 3 can also be changed accordingly.

[0075] In some embodiments, Figure 2 As shown, when the second feeding point 102 feeds the second frequency signal current in the second branch 42 into the antenna radiator 3, the antenna radiator 3 between the second feeding point 102 and the second grounding point 201 can radiate the second frequency, that is, the second frequency is covered by a part of the first radiator 10 and the whole of the second radiator 20, and the distance between the second feeding point 102 and the second grounding point 201 can correspond to a quarter wavelength of the second frequency.

[0076] The second frequency signal current can be fed into the first radiator 10 through the second feeding point 102 , and the second radiator 20 can be electrically coupled with the first radiator 10 , so that the second radiator 20 generates an induced current and radiates the second frequency together with a part of the first radiator 10 .

[0077] In some embodiments, the second frequency may be the N78 frequency, and the quarter-wavelength mode of the antenna radiator 3 radiates the second frequency.

[0078] However, the present disclosure is not limited thereto, and by changing the radiation parameters of the matching circuit 5 and the antenna radiator 3, the first frequency can be changed to a frequency in another frequency band, thereby meeting the design requirements of the antenna component, and the radiation pattern of the antenna radiator 3 can also be changed accordingly.

[0079] Figure 3 is a circuit connection diagram of a matching circuit of an antenna assembly according to an exemplary embodiment.

[0080] In some embodiments, Figure 3 As shown, the matching circuit 5 may include: a feed source 102 , a first matching circuit 51 and a second matching circuit 52 .

[0081] The feed source 102 can be set on the main circuit board 1, and the feed source 102 can be electrically connected to the signal transmission line 4. The feed source 102 can provide signal current, so that the feed source 102 can input the first frequency signal current and the second frequency signal current into the signal transmission line 4.

[0082] The first matching circuit 51 can be arranged on the first branch line 41, the first end of the first matching circuit 51 is electrically connected to the feed source 102, and the second end of the first matching circuit 51 is electrically connected to the first feed point 101. The first matching circuit 51 can adjust the radiation parameters of the antenna radiator 3 radiating the first frequency. The first matching circuit 51 can make the antenna radiator 3 generate two resonant waves when radiating the first frequency, so that the antenna radiator 3 can completely cover the first frequency with a radiation mode, and thus there is no need to set a switch device on the signal transmission line 4, the first branch line 41 and the second branch line 42 to switch and control the radiation mode of the antenna radiator 3 when radiating the first frequency, thereby eliminating the hardware cost required for setting the switch device and the hardware cost of the switch device, which can reduce the internal stacking pressure of the electronic device and release the available area of ​​the auxiliary circuit board 2.

[0083] Furthermore, the first matching circuit 51 can reduce the interference of the second frequency radiation on the first frequency radiation, thereby ensuring the radiation performance of the first frequency, enhancing the stability of the wireless signal connection of the first frequency, and further optimizing the performance of the antenna assembly.

[0084] The second matching circuit 52 can be arranged on the second branch line 42, the first end of the second matching circuit 52 is electrically connected to the feed source 102, and the second end of the second matching circuit 52 is electrically connected to the second feed point 102. The second matching circuit 52 can adjust the radiation parameters of the second frequency radiated by the antenna radiator 3, so that the radiation parameters of the second frequency meet the design requirements of the antenna component.

[0085] Furthermore, the second matching circuit 52 can reduce the interference of the radiation of the first frequency on the radiation of the second frequency, thereby ensuring the radiation performance of the second frequency, enhancing the stability of the wireless signal connection of the second frequency, and further optimizing the performance of the antenna assembly.

[0086] By matching and tuning the antenna assembly through the first matching circuit 51 and the second matching circuit 52, the antenna assembly can have wider broadband coverage. For example, the antenna assembly can cover the medium and high frequency bands and the N78 frequency band, thereby improving the signal connection capability of the antenna assembly and enabling the device equipped with the antenna assembly to have more wireless signal connection functions.

[0087] In some embodiments, Figure 3 As shown, the first matching circuit 51 may include: a first resonance module 511, a third capacitor C3, a third inductor L3 and a fourth inductor L4.

[0088] The first resonance module 511 may include a first capacitor C1 and a first inductor L1 connected in parallel, and one end of the first resonance module 511 may be electrically connected to the feed source 102. The first resonance module 511 may reduce the radiation interference of the second frequency on the first frequency, thereby ensuring the radiation performance of the first frequency, enhancing the wireless signal connection stability of the first frequency, and further optimizing the performance of the antenna assembly.

[0089] The third capacitor C3 can be connected in parallel with the first resonance module 511 and one end of the third capacitor C3 is grounded, the third inductor L3 can be connected in series with the first resonance module 511 and one end of the third inductor L3 can be electrically connected to the first feed point 101, and the fourth inductor L4 is connected in parallel with the third inductor L3. The three-stage circuit composed of the third capacitor C3, the third inductor L3 and the third inductor L3 can adjust the radiation parameters of the antenna radiator 3 radiating the first frequency, and the three-stage circuit composed of the third capacitor C3, the third inductor L3 and the third inductor L3 can make the antenna radiator 3 generate two resonance waves when radiating the first frequency, so that the antenna radiator 3 can completely cover the first frequency with a radiation mode, and then there is no need to set a switch device on the signal transmission line 4, the first branch line 41 and the second branch line 42 to switch and control the radiation mode of the antenna radiator 3 when radiating the first frequency, thereby eliminating the hardware cost required for setting the switch device and the hardware cost matching the switch device, which can reduce the internal stacking pressure of the electronic device and release the available area of ​​the auxiliary circuit board 2.

[0090] Exemplarily, when the first frequency is a medium-high frequency, the first capacitor C1 may be 0.7 pF, the first inductor L1 may be 2.7 nH, the third capacitor C3 may be 2.2 pF, and the third inductor L3 may be 1.2 nH.

[0091] However, the present disclosure is not limited thereto, and the parameter values ​​of the various circuit components of the first matching circuit 51 may be changed to better meet the design requirements of the antenna assembly.

[0092] In some other embodiments, the first resonance module 511 may be disposed between the third capacitor C3 and the third inductor L3, so that the radiation parameters of the antenna assembly are changed to better meet the design requirements of the antenna assembly.

[0093] In some embodiments, the second matching circuit 52 may include: a second resonance module 521 .

[0094] The second resonance module 521 may include a second capacitor C2 and a second inductor L2 connected in parallel, one end of the second resonance module 521 may be electrically connected to the feed source 102, and the other end of the second resonance module 521 may be electrically connected to the second feed point 102. The second resonance module 521 may reduce the radiation interference of the first frequency on the second frequency, thereby ensuring the radiation performance of the second frequency, enhancing the wireless signal connection stability of the second frequency, and further optimizing the performance of the antenna assembly.

[0095] Exemplarily, when the second frequency is N78 frequency, the second capacitor C2 may be 0.7 pF, and the second inductor L2 may be 8.0 nH.

[0096] Figure 4 is an antenna return loss diagram of an antenna assembly according to an exemplary embodiment.

[0097] like Figure 4 As shown, the S11 of the antenna assembly is lower than -6dB in the first frequency band (1.71GHz-2.7GHz) and the second frequency band (3.3GHz-3.8GHz). Figure 4 It can be seen that the antenna assembly disclosed in the present invention has a lower return loss rate.

[0098] Figure 5 is a diagram showing antenna efficiency of an antenna assembly according to an exemplary embodiment.

[0099] like Figure 5 As shown, the antenna efficiency of the antenna assembly in the first frequency band range (1.71GHz-2.7GHz) is between -3 and -4dB, and the antenna efficiency of the antenna assembly in the second frequency band range (3.3GHz-3.8GHz) is between -4 and -5dB. Figure 5 It can be seen that the antenna assembly disclosed in the present invention has a higher antenna efficiency.

[0100] Based on the same concept, an embodiment of the present disclosure also provides an electronic device.

[0101] The electronic device may be a laptop computer, a desktop computer, a mobile phone, a digital broadcast terminal, a message transceiver, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, a translator, and a wearable device such as a watch or a bracelet, and may be any electronic device with a speaker. In the following description, a mobile phone is used as an example, but the present disclosure is not limited thereto.

[0102] Figure 6 The diagram is a schematic structural diagram of an electronic device according to an exemplary embodiment.

[0103] In some embodiments, Figure 6 As shown, the electronic device may include: a middle frame 6 and an antenna assembly.

[0104] At least a portion of the middle frame 6 is a metal portion 61 , wherein at least a portion of the metal portion 61 may be an antenna radiator 3 .

[0105] The conductive metal part 61 is used as the antenna radiator 3, and the antenna component is configured as a slot antenna through a slit design.

[0106] The slot antenna uses the metal part 61 of the middle frame 6 as the antenna radiator 3 of the antenna assembly, thereby avoiding the metal shielding effect of the metal shell of the electronic device on the antenna assembly, so that the electronic device can be set to a full metal shell to ensure the aesthetics and feel while also ensuring that the antenna radiator 3 of the antenna assembly can normally receive external wireless signal information or transmit wireless signal information to the outside world. In terms of design, the slot antenna is easy to control the amplitude distribution within the antenna aperture surface, has a high aperture surface utilization rate, a small size, a light weight, and can achieve low or very low side lobes. At the same time, the slot antenna also has the advantages of a strong structure, simple and compact, easy to process, economical cost, convenient feeding, simple installation, concealability, and decorability.

[0107] In some embodiments, the main circuit board 1 can be set at the upper end of the electronic device, the auxiliary circuit board 2 can be set at the lower end of the electronic device, and the antenna radiator 3 of the antenna assembly can be set on the middle frame 6 at the lower end of the electronic device.

[0108] From the perspective of functional requirements and stacking design, the main circuit board 1 that needs to carry more electronic devices can be set at the upper end of the electronic device to avoid the installation of the battery of the electronic device. However, this also causes the antenna radiator 3 on the middle frame 6 at the lower end of the electronic device to be far away from the main circuit board 1, so it is necessary to transmit the wireless frequency signal current to the auxiliary circuit board 2 through the signal transmission line 4, and then feed it into the antenna assembly through the first branch line 41 and the second branch line 42 to achieve signal connection of the antenna assembly.

[0109] The embodiment of the present disclosure, through the connection transmission relationship between the signal transmission line 4, the first branch line 41 and the second branch line 42, enables the antenna assembly to support the radiation of two signal frequencies while eliminating the hardware cost required to set up two signal transmission lines 4, and at the same time reduces the hardware cost of the two signal transmission lines 4, which can reduce the internal stacking pressure of the electronic device and release the available area of ​​the secondary circuit board 2, so that the electronic device can carry more other electronic devices.

[0110] Furthermore, by setting the matching circuit 5 on the first branch line 41, the radiation parameters of the antenna radiator 3 radiating the first frequency are adjusted. The matching circuit 5 can enable the antenna radiator 3 to generate two resonant waves when radiating the first frequency, so that the antenna radiator 3 can completely cover the first frequency with one radiation mode, and thus it is no longer necessary to set a switching device on the signal transmission line 4, the first branch line 41 and the second branch line 42 to switch and control the radiation mode of the antenna radiator 3 when radiating the first frequency, thereby eliminating the hardware cost required for setting the switching device and the hardware cost matching the switching device. This can reduce the internal stacking pressure of the electronic device and release the available area of ​​the secondary circuit board 2, so that the electronic device can carry more other electronic devices.

[0111] It is to be understood that in the present disclosure, "plurality" refers to two or more than two, and other quantifiers are similar. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. The singular forms "a", "the" and "the" are also intended to include plural forms, unless the context clearly indicates other meanings.

[0112] It is further understood that the terms "second", "secondary", etc. are used to describe various information, but such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other and do not indicate a specific order or degree of importance. In fact, the expressions "secondary", "secondary", etc. can be used interchangeably. For example, without departing from the scope of the present disclosure, the second information may also be referred to as the second information, and similarly, the second information may also be referred to as the second information.

[0113] It will be further understood that the terms “center”, “longitudinal”, “lateral”, “front”, “back”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present embodiment and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation.

[0114] It can be further understood that, unless otherwise specified, “connection” includes a direct connection without other components between the two, and also includes an indirect connection with other components between the two.

[0115] It is further understood that, although the operations are described in a specific order in the drawings in the embodiments of the present disclosure, it should not be understood as requiring the operations to be performed in the specific order shown or in a serial order, or requiring the execution of all the operations shown to obtain the desired results. In certain environments, multitasking and parallel processing may be advantageous.

[0116] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any modification, use or adaptation of the present disclosure, which follows the general principles of the present disclosure and includes common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the following scope of rights.

[0117] It should be understood that the present disclosure is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the scope of the appended claims.

Claims

1. An antenna assembly, characterized in that: The antenna assembly comprises: Main circuit board; An antenna, the antenna comprising an antenna radiator; A signal transmission line, wherein a first end of the signal transmission line is electrically connected to the main circuit board, and a second end of the signal transmission line includes a first feeding end and a second feeding end; Wherein, the first feeding end and the second feeding end are electrically connected to the antenna radiator.

2. The antenna assembly according to claim 1, characterized in that: The antenna radiator comprises: A first radiator, the first radiator is electrically connected to the first feeding end and the second feeding end; a second radiator, wherein the first radiator and the second radiator are arranged with a gap therebetween; The antenna radiates a first frequency through the first radiator, and the antenna radiates a second frequency through the first radiator and the second radiator.

3. The antenna assembly according to claim 2, characterized in that: The antenna comprises: A first feeding point, the first feeding point is arranged on the first radiator, and the first feeding point is electrically connected to the first feeding end; A second feeding point, the second feeding point is arranged on the first radiator, and the second feeding point is electrically connected to the second feeding end; a first grounding point, the first grounding point being arranged on the first radiator; a second grounding point, the second grounding point being arranged on the second radiator, The first feeding point is located between the gap and the second feeding point, and the second feeding point is located between the first feeding point and the first grounding point.

4. The antenna assembly according to claim 3, characterized in that: The distance between the first feeding point and the first grounding point corresponds to a quarter wavelength of the first frequency.

5. The antenna assembly according to claim 4, characterized in that: The first frequency is a medium to high frequency.

6. The antenna assembly according to claim 3, characterized in that: The distance between the first feeding point and the first grounding point is 20 mm.

7. The antenna assembly according to claim 3, characterized in that: The distance between the second feeding point and the second grounding point is one quarter of the wavelength of the second frequency.

8. The antenna assembly according to claim 3, characterized in that: The distance between the second feeding point and the second grounding point is 19.5 mm.

9. The antenna assembly according to claim 8, characterized in that: The second frequency is the N78 frequency.

10. The antenna assembly according to claim 5, characterized in that: The antenna assembly comprises: A feed source, the feed source being arranged on the main circuit board; A first matching circuit, wherein the first matching circuit is arranged on the signal transmission line, a first end of the first matching circuit is electrically connected to the feed source, and a second end of the first matching circuit is electrically connected to the first feed point; A second matching circuit, wherein the second matching circuit is arranged on the signal transmission line, a first end of the second matching circuit is electrically connected to the feed source, and a second end of the second matching circuit is electrically connected to the second feed point.

11. The antenna assembly according to claim 10, characterized in that: The first matching circuit comprises: A first resonance module, the first resonance module comprising a first capacitor and a first inductor connected in parallel, the first resonance module being electrically connected to the feed source; a third capacitor, the third capacitor being connected in parallel with the first resonant module; a third inductor, wherein the third inductor is connected in series with the first resonant module and the third inductor is electrically connected to the first feeding point; and A fourth inductor is connected in parallel with the third inductor.

12. The antenna assembly according to claim 10, characterized in that: The second matching circuit comprises: The second resonance module includes a second capacitor and a second inductor connected in parallel with each other.

13. The antenna assembly according to claim 1, characterized in that: The antenna assembly comprises a secondary circuit board, and the secondary circuit board is spaced apart from the main circuit board; The second end of the signal transmission line is electrically connected to the auxiliary circuit board and is divided into a first branch line and a second branch line. The first feeding end is one end of the first branch line, and the second feeding end is one end of the second branch line.

14. The antenna assembly according to claim 13, characterized in that: The main circuit board is provided with a radio frequency front end, and the auxiliary circuit board is provided with a wire holder; The first end of the signal transmission line is electrically connected to the RF front end; The second end of the signal transmission line is connected to the line holder and is divided into the first branch line and the second branch line.

15. An electronic device, characterized in that: include: a middle frame, at least a portion of which is a metal portion; According to any one of claims 1 to 14, at least a portion of the metal portion is the antenna radiator.

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