Antenna module, middle frame assembly and electronic equipment

Abstract

The invention relates to an antenna module, a middle frame assembly and electronic equipment. The antenna module comprises a first radiator and a second radiator, the first end of the first radiator is connected with the first end of the second radiator, a first grounding point is arranged between the first end and the second end of the first radiator, a second grounding point is arranged at the joint of the first radiator and the second radiator, and the first grounding point is grounded; a first feeding point connected with the first feed source is arranged between the first grounding point and the second end of the first radiator, and a second feeding point connected with the second feed source is arranged between the second grounding point and the second end of the second radiator; the first radiator is used for supporting the antenna module to work in a plurality of first frequency bands under the excitation of a feed signal fed by the first feed source; and the second radiator is used for supporting the antenna module to work in a plurality of second frequency bands under the excitation of the feed signal fed by the second feed source. By adopting the antenna module, the electronic equipment can support a plurality of communication frequency bands.

Description

Technical Field

[0001] The present application relates to the field of antenna technology, and in particular to an antenna module, a middle frame assembly, and an electronic device. Background Art

[0002] Antennas are essential components for ensuring the proper communication of electronic devices. As electronic devices continue to improve their capabilities, they are required to communicate across multiple frequency bands. Consequently, multiple antennas need to be deployed electronically to support these various frequency bands. However, the space available for electronic devices is limited, leading to an urgent need to fully utilize antennas to support multiple frequency bands. Summary of the Invention

[0003] Based on this, it is necessary to provide an antenna module, a middle frame assembly and an electronic device that can utilize the antenna module to support multiple communication frequency bands in response to the above technical problems.

[0004] In a first aspect, the present application provides an antenna module. The antenna module includes a first radiator and a second radiator, wherein the first end of the first radiator is connected to the first end of the second radiator, and the second end of the first radiator and the second end of the second radiator are both free ends; a first grounding point is provided between the first end and the second end of the first radiator, and a second grounding point is provided at the connection between the first radiator and the second radiator, and the first grounding point is grounded; the second grounding point is grounded when the second radiator is working; a first feeding point connected to a first feed source is provided between the first grounding point and the second end of the first radiator, and a second feeding point connected to a second feed source is provided between the second grounding point and the second end of the second radiator; the first radiator is used to support the antenna module to operate in multiple first frequency bands under the excitation of the feeding signal fed into the first feed source; the second radiator is used to support the antenna module to operate in multiple second frequency bands under the excitation of the feeding signal fed into the second feed source.

[0005] In a second aspect, the present application further provides a middle frame assembly. The middle frame assembly includes the antenna module described in the first aspect, and further includes: a substrate including a first feed source, a second feed source, and a floor; and a frame surrounding the substrate, with the first and second radiators in the antenna module disposed on the frame.

[0006] In a third aspect, the present application further provides an electronic device, which includes the middle frame assembly as described in the second aspect.

[0007] The antenna module, middle frame assembly, and electronic device described above include a first radiator and a second radiator, wherein the first end of the first radiator and the first end of the second radiator are connected, and the second ends of the first radiator and the second ends of the second radiator are both free ends; a first grounding point is provided between the first and second ends of the first radiator, and a second grounding point is provided at the connection between the first and second radiators, the first grounding point being grounded; the second grounding point being grounded when the second radiator is in operation; a first feed point connected to a first feed source is provided between the first grounding point and the second end of the first radiator, and a second feed point connected to a second feed source is provided between the second grounding point and the second end of the second radiator; the first radiator is configured to support the antenna module operating in multiple first frequency bands under the excitation of a feed signal fed from the first feed source; and the second radiator is configured to support the antenna module operating in multiple second frequency bands under the excitation of a feed signal fed from the second feed source. Thus, the antenna module, based on the interconnected first and second radiators, can support multiple communication frequency bands. When the antenna module is provided in an electronic device, it can support the electronic device operating in multiple communication frequency bands while occupying a small space, thereby improving the communication performance of the electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0009] Figure 1 Schematic diagram of the structure of an antenna module in one embodiment;

[0010] Figure 2 is a schematic structural diagram of another antenna module in one embodiment;

[0011] Figure 3 is a schematic structural diagram of another antenna module in one embodiment;

[0012] Figure 4 is a schematic structural diagram of another antenna module in one embodiment;

[0013] Figure 5 is a schematic diagram of a matching circuit in one embodiment;

[0014] Figure 6 is a schematic diagram of another matching circuit in one embodiment;

[0015] Figure 7 is a schematic diagram of another matching circuit in one embodiment;

[0016] Figure 8 is a schematic diagram of another matching circuit in one embodiment;

[0017] Figure 9 is a schematic diagram of another matching circuit in one embodiment;

[0018] Figure 10 is a schematic diagram of another matching circuit in one embodiment;

[0019] Figure 11 is a schematic diagram of another matching circuit in one embodiment;

[0020] Figure 12 is a schematic diagram of another matching circuit in one embodiment;

[0021] Figure 13 A schematic diagram of the direction of current in one embodiment;

[0022] Figure 14 is another schematic diagram of current direction in one embodiment;

[0023] Figure 15 is another schematic diagram of current direction in one embodiment;

[0024] Figure 16 is another schematic diagram of current direction in one embodiment;

[0025] Figure 17 is another schematic diagram of current direction in one embodiment;

[0026] Figure 18 A schematic diagram of the layout of an existing antenna solution in one embodiment;

[0027] Figure 19 is a schematic structural diagram of another antenna module in one embodiment;

[0028] Figure 20 Schematic diagram of antenna performance curve in one embodiment;

[0029] Figure 21 is a schematic diagram of another antenna performance curve in one embodiment;

[0030] Figure 22 Schematic diagram of antenna isolation curve in one embodiment;

[0031] Figure 23 A schematic diagram of current distribution in one embodiment;

[0032] Figure 24 is a schematic structural diagram of an electronic device in one embodiment;

[0033] Figure 25FIG. 1 is a diagram showing the internal structure of an electronic device in one embodiment.

[0034] Reference numerals:

[0035] 100. Antenna module; 101. First radiator; 102. Second radiator; 101A. First end of the first radiator; 102A. First end of the second radiator; 101B. Second end of the first radiator; 102B. Second end of the second radiator; G1. First grounding point; G2. Second grounding point; D1. First feeding point; D2. Second feeding point; K1. First feed source; K2. Second feed source; 103. Adjustment circuit; M1. First matching circuit; M2. Second matching circuit. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0037] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application 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, and therefore should not be understood as a limitation on the present application.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0039] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0040] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0041] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0042] Antennas are essential components for ensuring the normal communication of electronic devices. As the functionality of electronic devices continues to improve, they need to communicate in multiple communication frequency bands. Accordingly, multiple antennas need to be electronically deployed to support the electronic devices operating in the required communication frequency bands. However, the space for electronic devices is limited. Therefore, if a single antenna can support as many communication frequency bands as possible, it is more convenient to deploy antennas in electronic devices and can reduce costs compared to the existing solution of using multiple antennas to support multiple communication frequency bands. Therefore, the problem of how to fully utilize antennas to support multiple communication frequency bands needs to be solved urgently.

[0043] In view of this, an embodiment of the present application provides an antenna module, which includes a first radiator and a second radiator, wherein the first end of the first radiator is connected to the first end of the second radiator, and the second end of the first radiator and the second end of the second radiator are both free ends; a first grounding point is provided between the first end and the second end of the first radiator, and a second grounding point is provided at the connection between the first radiator and the second radiator, and the first grounding point is grounded; the second grounding point is grounded when the second radiator is working; a first feeding point connected to the first feed source is provided between the first grounding point and the second end of the first radiator, and a second feeding point connected to the second feed source is provided between the second grounding point and the second end of the second radiator; the first radiator is used to support the antenna module to operate in multiple first frequency bands under the excitation of the feed signal fed into the first feed source; the second radiator is used to support the antenna module to operate in multiple second frequency bands under the excitation of the feed signal fed into the second feed source. Therefore, when the antenna module is provided in an electronic device, it can support multiple communication frequency bands required by the electronic device without taking up much space.

[0044] In an exemplary embodiment, Figure 1 , which shows a schematic structural diagram of an antenna module provided in an embodiment of the present application, the antenna module 100 includes a first radiator 101 and a second radiator 102. The first end 101A of the first radiator 101 is connected to the first end 102A of the second radiator 102, and the second end 101B of the first radiator 101 and the second end 102B of the second radiator 102 are both free ends.

[0045] A first grounding point G1 is provided between the first end and the second end of the first radiator 101, and a second grounding point G2 is provided at the connection between the first radiator 101 and the second radiator 102. The first grounding point G1 is grounded; the second grounding point G2 is grounded when the second radiator 102 is working; a first feeding point D1 connected to the first feed source K1 is provided between the first grounding point G1 and the second end of the first radiator 101, and a second feeding point D2 connected to the second feed source K2 is provided between the second grounding point G2 and the second end of the second radiator 102; the first radiator 101 is used to support the antenna module 100 to operate in multiple first frequency bands under the excitation of the feed signal fed into the first feed source K1; the second radiator 102 is used to support the antenna module 100 to operate in multiple second frequency bands under the excitation of the feed signal fed into the second feed source K2.

[0046] The antenna module 100 can be a structural component designed using the metal inserts of the electronic device itself. For example, the first radiator 101 and the second radiator 102 are formed by the metal frame of the electronic device, such as an MDA (Mechanical Design Antenna) antenna. Alternatively, the antenna module 100 can be a hybrid of one or more of a flexible printed circuit (FPC) antenna, a laser direct structuring (LDS) antenna, a print direct structuring (PDS) antenna, and a metal branch antenna. Of course, the antenna module 100 can also be other types of antennas, which are not fully exemplified here.

[0047] The first end of the first radiator 101 is connected to the first end of the second radiator 102, that is, the first radiator 101 and the second radiator 102 are connected to each other. In other words, it can be understood that the antenna module 100 includes a main radiator, which includes a portion of the first radiator 101 and a portion of the second radiator 102.

[0048] In an optional embodiment of the present application, the first radiator 101 is in a straight line or L shape. It is understandable that, Figure 1 As an example, the first radiator 101 is in an L-shaped group. Figure 2 The schematic diagram of the antenna module 100 is exemplarily shown when the first radiator 101 is in a straight line shape.

[0049] In an exemplary embodiment, when the first radiator 101 is L-shaped, the first grounding point G1 is disposed at a bend of the first radiator 101 , for example Figure 1 shown.

[0050] Optionally, the first radiator 101 and the second radiator 102 can be arranged on the frame of the electronic device. Exemplarily, when the first radiator 101 is L-shaped, the frame in the middle frame assembly of the electronic device includes a first frame and a second frame arranged opposite to each other, and a third frame and a fourth frame arranged opposite to each other, and the first end of the first frame is connected to the first end of the third frame, and the second end of the first frame is connected to the first end of the fourth frame; the first end of the second frame is connected to the second end of the third frame, and the second end of the second frame is connected to the second end of the fourth frame. When the first radiator 101 and the second radiator 102 are composed of the frame of the electronic device, the first radiator 101 is composed of a partial frame body in any two connected frames of the first frame, the second frame, the third frame and the fourth frame, and the second radiator 102 can be composed of a partial frame body in any one of the first frame, the second frame, the third frame and the fourth frame, as shown in FIG. Figure 1Thus, the main radiator composed of the first radiator 101 and the second radiator 102 can be disposed at the upper left corner, upper right corner, lower left corner or lower right corner of the electronic device.

[0051] A first grounding point G1 is provided between the first end and the second end of the first radiator 101, so the first radiator 101 can be grounded through the first grounding point G1. A second grounding point G2 is grounded when the second radiator 102 is in operation, so the second radiator 102 can be grounded through the second grounding point G2.

[0052] The antenna module 100 can support multiple first frequency bands and multiple second frequency bands. Accordingly, the feed signals of each first frequency band fed by the first feed source K1 are transmitted through the first radiator 101, or the first radiator 101 receives the signals of the first frequency band; the feed signals of each second frequency band fed by the second feed source K2 are transmitted through the second radiator 102, or the second radiator 102 receives the signals of the second frequency band.

[0053] In this way, by setting the antenna module 100 in the electronic device, it can be ensured that the electronic device supports multiple first frequency bands and multiple second frequency bands based on the antenna module 100, thereby expanding the communication range of the electronic device.

[0054] In an optional embodiment of the present application, the length of the first radiator 101 is determined according to the specific frequency band range of each first frequency band, and the length of the second radiator 102 is determined according to the specific frequency band range of each second frequency band. Therefore, different radiator lengths can support the radiator to operate in different frequency bands. That is, the lengths of the first radiator 101 and the second radiator 102 can be determined in advance according to the operating frequency band required by the electronic device.

[0055] Based on this, multiple antenna modules 100 can be installed in an electronic device, with the first frequency bands implemented by each antenna module 100 not overlapping, and the second frequency bands implemented by each antenna module 100 not overlapping. In this way, more frequency bands can be achieved with fewer antenna modules 100, saving costs and reducing space.

[0056] The "electronic device" (also referred to as "terminal" or "mobile terminal" or "electronic device") in the embodiments of the present application includes a device that receives / sends communication signals. It may also be referred to as a "wireless communication terminal", "wireless terminal" or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular phones; personal communication system (PCS) terminals that can combine cellular radio telephones with data processing, fax and data communication capabilities; PDAs that can include radio telephones, pagers, Internet / Intranet access, web browsers, notepads, calendars and / or global positioning system (GPS) receivers; and conventional laptop and / or palmtop receivers or other electronic devices that include radiotelephone transceivers.

[0057] The antenna module 100 includes a first radiator 101 and a second radiator 102. The first end of the first radiator 101 is connected to the first end of the second radiator 102, and the second end of the first radiator 101 and the second end of the second radiator 102 are both free ends. A first grounding point G1 is provided between the first end and the second end of the first radiator 101, and a second grounding point G2 is provided at the connection between the first radiator 101 and the second radiator 102. The first grounding point G1 is grounded. The second grounding point G2 is grounded when the second radiator 102 is in operation. A first feed point D1 connected to the first feed source K1 is provided between the first ground point G1 and the second end of the first radiator 101. A second feed point D2 connected to the second feed source K2 is provided between the second ground point G2 and the second end of the second radiator 102. The first radiator 101 is configured to support the antenna module 100 operating in multiple first frequency bands under the excitation of the feed signal fed into the first feed source K1. The second radiator 102 is configured to support the antenna module 100 operating in multiple second frequency bands under the excitation of the feed signal fed into the second feed source K2. In this way, the antenna module 100, based on the interconnected first radiator 101 and second radiator 102, can support multiple communication frequency bands. When the antenna module 100 is provided in an electronic device, it can support the electronic device operating in multiple communication frequency bands while occupying a relatively small space, thereby improving the communication performance of the electronic device.

[0058] In an exemplary embodiment, the plurality of first frequency bands include a first communication frequency band, a second communication frequency band, and a third communication frequency band; and the plurality of second frequency bands include a fourth communication frequency band and a fifth communication frequency band.

[0059] like Figure 3 As shown, the antenna module 100 further includes a regulating circuit 103 disposed between the second grounding point G2 and the ground.

[0060] In an optional implementation, when the adjustment circuit 103 is in the first adjustment state, the first radiator 101 is used to support the antenna module 100 to operate in the first communication frequency band under the excitation of the feed signal fed by the first feed source K1. The first adjustment state of the adjustment circuit 103 is an open circuit state;

[0061] That is, when the first radiator 101 is working, the adjustment circuit 103 is equivalent to an open circuit, and the first grounding point G1 is equivalent to a gap, separating the first radiator 101 and the second radiator 102, so that the first radiator 101 supports the first communication frequency band.

[0062] In this way, based on the open-circuit state of the adjustment circuit 103, the electromagnetic coupling between the first radiator 101 and the second radiator 102 can be significantly reduced, the isolation of the antenna can be improved, and the mutual interference of signals between different radiators can be reduced. The first radiator 101 and the second radiator 102 can work more independently, reducing the performance degradation caused by coupling.

[0063] Specifically, when the adjustment circuit 103 is in the first adjustment state, the first radiator 101 is used to support the antenna module 100 to operate in the first communication frequency band under the stimulation of the first feeding signal fed by the first feed source K1.

[0064] In addition, the first radiator 101 is used to support the antenna module 100 to operate in the second communication frequency band under the excitation of the second feed signal fed by the first feed source K1, and to support the antenna module 100 to operate in the third communication frequency band under the excitation of the third feed signal fed by the first feed source K1.

[0065] In an optional embodiment of the present application, the frequency band range of the first communication frequency band, the frequency band range of the second communication frequency band, and the frequency band range of the third communication frequency band increase sequentially.

[0066] In another optional implementation, when the adjustment circuit 103 is in the second adjustment state, the second radiator 102 is configured to support the antenna module 100 operating in the fourth communication frequency band or the fifth communication frequency band under the stimulation of the feed signal fed by the first feed source K1. The second adjustment state of the adjustment circuit 103 is a short-circuit state.

[0067] That is, when the second radiator 102 is working, the adjustment circuit 103 is equivalent to a short circuit, and the first grounding point G1 is grounded through the adjustment circuit 103. At this time, the current goes to the ground through the first grounding point G1 and the second grounding point G2, separating the first radiator 101 and the second radiator 102, and the second radiator 102 then supports the fourth communication frequency band and the fifth communication frequency band.

[0068] In an optional embodiment of the present application, the regulating circuit 103 includes adjustable devices such as switches and variable capacitors, thereby supporting the regulating circuit 103 to operate in an open circuit state and a short circuit state.

[0069] In an optional embodiment of the present application, the frequency band ranges of the fourth communication frequency band and the fifth communication frequency band increase sequentially.

[0070] In the embodiment of the present application, by providing the adjustment circuit 103, the need for a gap between the first radiator 101 and the second radiator 102 is eliminated, thereby improving the isolation between the first radiator 101 and the second radiator 102 and effectively saving the overall space occupied by the antenna module 100. Furthermore, the antenna module 100 can support five communication frequency bands, greatly expanding its application range.

[0071] In an exemplary embodiment, Figure 4 As shown, the antenna module 100 further includes a first matching circuit M1 connected between the first feeding point D1 and the first feed source K1 and a second matching circuit M2 connected between the second feeding point D2 and the second feed source K2.

[0072] The first matching circuit M1 is used to tune the first communication frequency band, the second communication frequency band, and the third communication frequency band.

[0073] The second matching circuit M2 is used to tune the fourth communication frequency band and the fifth communication frequency band.

[0074] Exemplarily, the first matching circuit M1 and the second matching circuit M2 include at least one capacitor and at least one inductor to achieve the tuning process. Figures 5 to 12 The implementation of the matching circuit is shown in FIG. 1 , where L1 and L2 are inductors and C1 and C2 are capacitors. Optionally, the above-mentioned adjustment circuit 103 can also be realized by Figures 5 to 12 In addition, the first matching circuit M1, the second matching circuit M2 and the adjustment circuit 103 may also include adjustable devices such as switches and variable capacitors.

[0075] By setting a matching circuit, the performance of the antenna module 100 is optimized to ensure that the antenna module 100 can efficiently receive and transmit signals in various frequency bands.

[0076] In an exemplary embodiment, the radiation pattern of the T-antenna from the second ground point G2 to the second end of the first radiator 101 supports the first communication frequency band. That is, when the first radiator 101 operates in the first communication frequency band, the portion from the second ground point G2 to the second end of the first radiator 101 is a T-antenna, and the current pattern is the radiation pattern (RM) from the first ground point G1 to the second end of the first radiator 101 and from the first ground point G1 to the second ground point G2. Taking the L-shaped first radiator 101 as an example, the current direction is as follows: Figure 13 In the radiation mode, the input impedance of the antenna is well matched with the characteristic impedance of the feed line, the reflection coefficient is low, the transmission efficiency is high, the signal loss during transmission is reduced, and the overall efficiency of the antenna module 100 is improved.

[0077] In an exemplary embodiment, the CRLH mode from the first ground point G1 to the first feeding point D1 supports the second communication frequency band. That is, when the first radiator 101 operates in the second communication frequency band, the portion from the first ground point G1 to the first feeding point D1 operates, and the current mode is the CRLH (Composite Right-Left-Handed) mode. Taking the first radiator 101 as an L-shaped example, the current direction is as follows: Figure 14 As shown in the example.

[0078] The CRLH mode is an electromagnetic mode that combines right-handed (RH) and left-handed (LH) characteristics. Through specific structural design, this mode enables antennas or electromagnetic devices to exhibit RH characteristics in certain frequency bands and LH characteristics in others. Antennas with CRLH modes exhibit unique electromagnetic properties, enabling them to achieve performance not possible with traditional antennas, such as broadband operation, miniaturization, and high gain, meeting diverse application requirements.

[0079] In an exemplary embodiment, the quarter-wavelength IFA mode from the first ground point G1 to the second end of the first radiator 101 supports the third communication frequency band. That is, when the first radiator 101 operates in the third communication frequency band, the portion from the first ground point G1 to the second end of the first radiator 101 operates, and the current mode is a quarter-wavelength IFA (Inverted-F Antenna) mode. Taking the first radiator 101 as an L-shaped example, the current direction is as follows: Figure 15 As shown in the example.

[0080] The quarter-wavelength IFA antenna boasts a compact structure, making it suitable for integration into miniaturized devices. This makes it ideal for electronic devices with strict space constraints. This design facilitates the integration of multiple antennas into a compact structure, improving the integration and reliability of the antenna system. At the resonant frequency, it efficiently converts the input RF signal into electromagnetic waves and radiates them, achieving high radiation efficiency. Optimized design can also reduce signal loss during transmission, improving signal quality and stability.

[0081] Optionally, since only the portion from the first grounding point G1 to the second end of the first radiator 101 is used when the first radiator 101 operates in the second communication frequency band or the third communication frequency band, when the first radiator 101 operates in the second communication frequency band or the third communication frequency band, the adjustment circuit 103 can be in an open circuit state or a short circuit state.

[0082] In an exemplary embodiment, the CRLH mode from the second ground point G2 to the second feeding point D2 supports the fourth communication frequency band. That is, when the second radiator 102 operates in the fourth communication frequency band, the portion from the second ground point G2 to the second feeding point D2 operates, and the current mode is the CRLH mode. Taking the first radiator 101 as an L-shaped example, the current direction is as follows: Figure 16 As shown in the example.

[0083] In an exemplary embodiment, the quarter-wavelength mode from the second ground point G2 to the second end of the second radiator 102 supports the fifth communication frequency band. That is, when the second radiator 102 operates in the fifth communication frequency band, the portion from the second ground point G2 to the second end of the second radiator 102 operates, and the current mode is the quarter-wavelength mode. Taking the first radiator 101 as an L-shaped example, the current direction is as follows: Figure 17 As shown in the example.

[0084] The quarter-wave antenna is only one-quarter the wavelength in length, making it smaller than half-wave or full-wave antennas and suitable for use in space-constrained environments. This reduces the space occupied by the antenna module 100 within electronic devices. Furthermore, the quarter-wave antenna exhibits high radiation efficiency in a resonant state, effectively converting signal energy into electromagnetic waves. In the horizontal plane, it exhibits omnidirectional radiation characteristics, making it suitable for applications requiring uniform coverage in multiple directions.

[0085] In summary, based on each current mode, not only can the antenna module 100 support multiple first frequency bands and multiple second frequency bands, but also the antenna performance of the antenna module 100 in each frequency band can be guaranteed.

[0086] In an exemplary embodiment, the frequency range of each first frequency band is smaller than the frequency range of each second frequency band.

[0087] In other words, the frequency band ranges of the first communication frequency band, the second communication frequency band, and the third communication frequency band are smaller than the frequency band ranges of the fourth communication frequency band and the fifth communication frequency band.

[0088] Optionally, each first frequency band is a low frequency band or a medium frequency band, and each second frequency band is a high frequency band.

[0089] In this way, the antenna module 100 can operate in each first frequency band and each second frequency band, and can also operate in the first frequency band and the second frequency band at the same time, so that electronic devices based on the antenna module 100 can send and receive signals in a variety of scenarios, ensuring the antenna performance while improving the communication performance of the electronic device.

[0090] In an exemplary embodiment, the first communication frequency band is the GPS-L5 frequency band; the second communication frequency band is the GPS-L1 frequency band; the third communication frequency band is the WIFI 2.4G frequency band; the fourth communication frequency band is the N78 frequency band; and the fifth communication frequency band is the WIFI 5G frequency band.

[0091] In related technologies, if the above frequency bands need to be integrated, the antenna solution layout is as follows: Figure 18As shown in the figure, the working frequency band of antenna unit 1 is L1 and WiFi2.4G, and the working frequency band of antenna unit 2 is N78 and WiFi5G. If the electronic device needs to support the L5 frequency band, it is necessary to set up another antenna that supports the L5 frequency band. Figure 18 As can be seen, the existing solution requires two radiating branches as two antenna units, each with a slot, and only covers four frequency bands. For GPS, an additional antenna unit is required to cover L5. The overall implementation cost is high and the complexity is high. Moreover, the need for multiple antennas and the presence of slots requires a large space and is not convenient for deployment.

[0092] Based on the above description, it can be seen that the antenna module 100 provided in the embodiment of the present application increases the coverage of the L5 frequency band and does not have any gaps. Based on the adjustment circuit 103, the isolation of the antenna module 100 when working at high frequency is improved. That is, the antenna module 100 has low cost, supports multiple frequency bands, occupies a small space and has high antenna performance.

[0093] For ease of understanding, the antenna module 100 provided in the embodiment of the present application is described below using a complete embodiment.

[0094] Please refer to Figure 19 The antenna module 100 shown is arranged in an electronic device and includes a first radiator 101 and a second radiator 102. The first end of the first radiator 101 is connected to the first end of the second radiator 102. A first grounding point G1 is provided between the first end and the second end of the first radiator 101, and a second grounding point G2 is provided at the connection between the first radiator 101 and the second radiator 102. The first grounding point G1 is grounded. An adjustment circuit 103 is provided between the second grounding point G2 and the ground. The antenna module 100 also includes a first matching circuit M1 connected between the first feed point D1 and the first feed source K1, and a second matching circuit M2 connected between the second feed point D2 and the second feed source K2.

[0095] The first matching circuit M1 is used to tune the first communication frequency band, the second communication frequency band, and the third communication frequency band; the second matching circuit M2 is used to tune the fourth communication frequency band and the fifth communication frequency band.

[0096] The branches of the main upper right part of the first radiator 101, the adjustment circuit 103 can be grounded through a capacitor, which is equivalent to an open circuit for low frequencies. Therefore, when the first radiator 101 is working, there are three current modes; among them, when working in the GPS L5 frequency band, it is mode 1, specifically, mode 1 is a T antenna, RM mode from the ground to both sides; when working in the GPS L1 frequency band, it is mode 2, mode 2 is the CRLH mode from the first feeding point D1 to the first grounding point G1; when working in the WIFI2.4G frequency band, it is mode 3, mode 3 is the quarter IFA mode from the first grounding point G1 to the end of the first radiator 101. The three modes can realize the three frequency bands of L5&L1&WIFI2.4G, and achieve higher efficiency at the same time. For example, Figure 20 The S parameters and efficiency curves of the antenna when the first radiator 101 is working are given. It can be seen that the antenna efficiency in the three frequency bands is relatively good.

[0097] The second radiator 102 is located at the far left of the branch and is grounded through the adjustment circuit 103. For high frequencies, it is equivalent to a short circuit. Therefore, when the second radiator 102 is working, there are two current modes. Among them, when working in the N78 frequency band, it is mode 4. Specifically, mode 4 is a CRLH mode from the second feeding point D2 to the second grounding point G2; when working in the WIFI5G frequency band, it is mode 5. Mode 5 is a quarter-wavelength mode from the second grounding point G2 to the second end of the second radiator 102. The two modes can realize the two frequency bands of N78 and WIFI5G. For example, Figure 21 The S parameters and efficiency curve of the antenna when the second radiator 102 is working are given, and it can be seen that the antenna efficiency is good in the entire frequency band.

[0098] By comparison, Figure 18 In the existing solution shown in FIG, there is only one slot between the two antenna units, and the distance between them is very close, so the isolation is poor. However, in the antenna module 100 provided in the present application, as shown in FIG. Figure 22 As shown, the S21 parameter of the antenna module 100 in the frequency band above 1.3GHz is always below -30dB, and has good isolation. This is mainly because the adjustment circuit 103 is equivalent to an open circuit for the L5 frequency band. As the frequency increases, the adjustment circuit 103 is in a short-circuit state, the second grounding point G2 is grounded, and the current can flow to the ground through the adjustment circuit 103 and the first grounding point G1 above. The current above is significantly weakened, so the influence of the second radiator 102 on the first radiator 101 is greatly reduced, and there is good isolation between the two. For example, as Figure 23 The figure shows a schematic diagram of the current distribution when the second radiator 102 operates in the WIFI 5G frequency band. It can be seen that since the first grounding point G1 and the second grounding point G2 are both grounded, the mutual influence between the two radiators is small, and the current is mainly concentrated near the second radiator 102.

[0099] In summary, the antenna module 100 provided in the present application uses the adjustment circuit 103 to adjust the resonance of the T antenna branch, increases the RM mode of the T antenna, and stimulates the L5 frequency band; the first radiator 101 and the second radiator 102 are isolated, and the high-frequency isolation is still improved while reducing one slot position.

[0100] In an exemplary embodiment, the present application also provides a middle frame assembly, which includes the antenna module 100 as in any of the above embodiments, and the middle frame assembly also includes: a substrate, including a first feed source, a second feed source and a floor; a frame, which is arranged around the substrate, and the first radiator 101 and the second radiator 102 in the antenna module 100 are arranged on the frame.

[0101] The substrate can be a conductive metal, or other materials. The substrate can be provided with a feed source and a floor in an electronic device. In some embodiments, the feed source may not be provided on the substrate, but directly on the circuit board.

[0102] The frame can be made of conductive metal, so it can also be called a "metal frame." Of course, the frame can also be made of other materials. The midframe assembly and back cover can form a housing assembly. The housing assembly is not limited to the midframe assembly and back cover. The housing assembly can be attached to the radiator by laminating, bonding, snapping, snapping, or welding.

[0103] In an exemplary embodiment, the first radiator 101 and the second radiator 102 are formed by processing a frame.

[0104] In some embodiments, the frame is arranged around the substrate, and the first radiator 101 and the second radiator 102 in the antenna module are arranged on the frame and can be processed from the frame.

[0105] In an exemplary embodiment, the present application further provides an electronic device, which includes the middle frame assembly as described in the above embodiment.

[0106] In an exemplary embodiment, the present application also provides an electronic device, which includes a middle frame assembly, a display screen and a back cover as described in the above embodiment, wherein the display screen is arranged on one side of the middle frame assembly, and the back cover is arranged on the other side of the middle frame assembly, and forms a accommodating cavity with the middle frame assembly.

[0107] The electronic device can be a cellular phone, a smart phone, other wireless communication device, a personal digital assistant, an audio player, other media players, a music recorder, a video recorder, a camera, other media recorders, a radio, a medical device, a calculator, a programmable remote control, a pager, a netbook computer, a personal digital assistant (PDA), a portable multimedia player (PMP), a Moving Picture Experts Group (MPEG-1 or MPEG-2), an Audio Layer 3 (MP3) player, a portable medical device, a digital camera, and combinations thereof.

[0108] Please refer to Figure 24 , Figure 24 FIG1 is a schematic diagram of the structure of an electronic device 1500 according to an embodiment of the present application. The electronic device 1500 may include a display screen 50 for displaying information, a middle frame assembly 60 for mounting the display screen 50 on one side, a circuit board 70 mounted on the middle frame assembly 60, a battery 80 mounted on the middle frame assembly 60, and a back cover 90 snap-fitted to the other side of the middle frame assembly 60.

[0109] The display screen 50 may be a liquid crystal display (LCD) or an organic light-emitting diode (OLED) display screen, etc., for displaying information and images.

[0110] The material of the middle frame assembly 60 can be a metal such as magnesium alloy, aluminum alloy, stainless steel, etc., of course, the material is not limited to these and can also be other materials. The middle frame assembly 60 can be placed between the display screen 50 and the back cover 90. The middle frame assembly 60 can be used to support the display screen 50. The middle frame assembly 60 and the back cover 90 are fastened together to form the outer contour of the electronic device 1500 and form a storage cavity inside. The storage cavity can be used to accommodate electronic components such as the camera, circuit board 70, battery 80, processor, and various types of sensors in the electronic device 1500.

[0111] The circuit board 70 is mounted within the housing cavity and can be mounted anywhere within the cavity. The processor of the electronic device 1500 can be located on the circuit board 70. The circuit board 70 can also integrate one, two, or more functional components such as a motor, a microphone, a speaker, a receiver, a headphone jack, a universal serial bus (USB) interface, a camera, a distance sensor, an ambient light sensor, a gyroscope, etc. The display screen 50 can also be electrically connected to the circuit board 70.

[0112] The battery 80 is installed in the housing cavity and can be installed anywhere within the cavity. The battery 80 can be electrically connected to the circuit board 70 so that the battery 80 can power the electronic device 1500. The circuit board 70 can be provided with a power management circuit. The power management circuit is used to distribute the voltage provided by the battery 80 to the various electronic components in the electronic device 1500, such as the display 50.

[0113] The back cover 90 can be made of the same material as the midframe assembly 60, though other materials are also possible. The back cover 90 can be integrally formed with the midframe assembly 60. In some embodiments, the back cover 90 can wrap around the midframe assembly 60 and support the display 50. The back cover 90 can also be formed with features such as a rear camera hole and a fingerprint sensor mounting hole.

[0114] In an exemplary embodiment, an electronic device is provided. The electronic device may be a terminal provided with the antenna module in any of the above embodiments. The internal structure diagram thereof may be as shown in FIG. Figure 25 As shown. The electronic device includes a processor, a memory, an input / output interface, a communication interface, a display unit and an input device. The processor, the memory and the input / output interface are connected via a system bus, and the communication interface, the display unit and the input device are connected to the system bus via the input / output interface. The processor of the electronic device is used to provide computing and control capabilities. The memory of the electronic device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The input / output interface of the electronic device is used to exchange information between the processor and an external device. The communication interface of the electronic device is used to communicate with an external terminal in a wired or wireless manner. The wireless manner can be achieved through WIFI, a mobile cellular network, near field communication (NFC) or other technologies. The display unit of the electronic device is used to form a visually visible image, and can be a display screen, a projection device or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen, and the input device of the electronic device can be a touch layer covering the display screen, or a button, trackball or touchpad set on the electronic device casing, or an external keyboard, touchpad or mouse.

[0115] Those skilled in the art will understand that Figure 25 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the electronic device to which the solution of the present application is applied. The specific electronic device may include more or fewer components than shown in the figure, or combine certain components, or have a different component arrangement.

[0116] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0117] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be determined by the appended claims.

Claims

1. An antenna module, characterized in that: The antenna module includes a first radiator and a second radiator, wherein the first end of the first radiator is connected to the first end of the second radiator, and the second end of the first radiator and the second end of the second radiator are both free ends; A first grounding point is provided between the first end and the second end of the first radiator, and a second grounding point is provided at the connection between the first radiator and the second radiator, the first grounding point is grounded; and the second grounding point is grounded when the second radiator is in operation; A first feeding point connected to a first feed source is provided between the first grounding point and the second end of the first radiator, and a second feeding point connected to a second feed source is provided between the second grounding point and the second end of the second radiator; The first radiator is configured to support the antenna module to operate in a plurality of first frequency bands under the stimulation of the feeding signal fed by the first feed source; The second radiator is used to support the antenna module to operate in multiple second frequency bands under the stimulation of the feeding signal fed by the second feed source.

2. The antenna module according to claim 1, wherein: The multiple first frequency bands include a first communication frequency band, a second communication frequency band and a third communication frequency band; The radiation pattern of the T-antenna from the second ground point to the second end of the first radiator supports the first communication frequency band; The CRLH mode from the first ground point to the first feeding point supports the second communication frequency band; The IFA mode of a quarter wavelength from the first ground point to the second end of the first radiator supports the third communication frequency band.

3. The antenna module according to claim 2, wherein: The plurality of second frequency bands include a fourth communication frequency band and a fifth communication frequency band; The CRLH mode from the second ground point to the second feeding point supports the fourth communication frequency band; A quarter-wavelength mode from the second ground point to the second end of the second radiator supports the fifth communication frequency band.

4. The antenna module according to claim 3, wherein: A regulating circuit is provided between the second grounding point and the ground; When the adjustment circuit is in the first adjustment state, the first radiator is used to support the antenna module to operate in the first communication frequency band under the stimulation of the feeding signal fed by the first feed source; When the adjustment circuit is in the second adjustment state, the second radiator is used to support the antenna module to operate in the fourth communication frequency band or the fifth communication frequency band under the excitation of the feeding signal fed by the first feed source.

5. The antenna module according to claim 4, wherein: The first regulating state of the regulating circuit is an open circuit state; The second regulating state of the regulating circuit is a short-circuit state.

6. The antenna module according to claim 3, wherein: The antenna module further includes a first matching circuit connected between the first feed point and the first feed source and a second matching circuit connected between the second feed point and the second feed source; The first matching circuit is used to tune the first communication frequency band, the second communication frequency band and the third communication frequency band; The second matching circuit is used to tune the fourth communication frequency band and the fifth communication frequency band.

7. The antenna module according to any one of claims 1 to 6, characterized in that: The first radiator is in a straight line or L shape.

8. The antenna module according to claim 7, wherein: When the first radiator is L-shaped, the first grounding point is disposed at a bend of the first radiator.

9. The antenna module according to any one of claims 3 to 6, characterized in that: The frequency range of each of the first frequency bands is smaller than the frequency range of each of the second frequency bands.

10. The antenna module according to claim 9, wherein: The first communication frequency band is the GPS-L5 frequency band; The second communication frequency band is the GPS-L1 frequency band; The third communication frequency band is the WIFI 2.4G frequency band; The fourth communication frequency band is the N78 frequency band; The fifth communication frequency band is the WIFI 5G frequency band.

11. A middle frame assembly, characterized in that: The middle frame assembly includes the antenna module according to any one of claims 1 to 10, and the middle frame assembly further includes: a substrate comprising a first feed source, a second feed source, and a floor; A frame is arranged around the substrate, and the first radiator and the second radiator in the antenna module are arranged on the frame.

12. An electronic device, characterized in that: The electronic device includes the middle frame assembly according to claim 11.

Images