Antenna assembly and electronic device

Abstract

The application provides an antenna assembly and an electronic device. The antenna assembly comprises a first radiator, a second radiator, a first matching circuit, a second matching circuit and a first feed source; the first radiator comprises a first end, a first connection point, a first grounding point, a feed point and a second end, and the first grounding point is grounded; the first feed source electrically connects the first matching circuit to the feed point to feed an excitation signal of a first frequency band supporting satellite communication to the first radiator; the second radiator comprises a third end and a fourth end, and the fourth end is grounded; the second matching circuit is electrically connected to the first connection point and can be configured as a first state of an open first end or a second state of a short first end; when the antenna assembly works in the first frequency band supporting satellite communication, the antenna assembly is in the first state; when the antenna assembly works in a frequency band other than the first frequency band, the antenna assembly is in the second state; and the antenna assembly has a higher upper half-sphere proportion of a directional diagram in the first state than in the second state.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to an antenna assembly and electronic device. Background Technology

[0002] With technological advancements, mobile phones and other electronic devices with communication capabilities are becoming increasingly widespread and powerful. These devices typically include antenna components to enable their communication functions. However, the communication performance of antenna components in related electronic devices when communicating with satellites is still insufficient and requires improvement. Summary of the Invention

[0003] In a first aspect, this application provides an antenna assembly, the antenna assembly comprising:

[0004] The first radiator includes a first end, a first connection point, a first grounding point, a power supply point, and a second end. The first grounding point is located between the first end and the second end. The first connection point is located between the first end and the first grounding point. The power supply point is located between the second end and the first grounding point. The first grounding point is grounded.

[0005] First matching circuit;

[0006] The first feed source is electrically connected to the first matching circuit to the feed point and is used to feed the first radiator with an excitation signal of a first frequency band supporting satellite communication.

[0007] A second radiator includes a third end and a fourth end, wherein the third end is opposite to and spaced apart from the second end to form a coupling gap, and the fourth end is grounded; and

[0008] A second matching circuit is electrically connected to the first connection point, and the second matching circuit can be configured to cause the antenna assembly to have a first state of open circuit at the first end or a second state of short circuit at the first end.

[0009] When the antenna assembly operates in the first frequency band supporting satellite communication, the second matching circuit is configured to put the antenna assembly in the first state, and when the antenna assembly operates in a frequency band other than the first frequency band, the second matching circuit is configured to put the antenna assembly in the second state, wherein the antenna assembly has a higher upper hemisphere octave in the radiation pattern when it is in the first state than when it is in the second state.

[0010] In a second aspect, embodiments of this application provide an electronic device, the electronic device including the antenna assembly as described in the first aspect.

[0011] In summary, the antenna assembly provided in this application allows the second matching circuit to be configured to operate in different states. When the antenna assembly operates in the first frequency band supporting satellite communication, the second matching circuit is configured to operate the antenna assembly in the first state. When the antenna assembly operates in a frequency band other than the first frequency band, the second matching circuit is configured to operate the antenna assembly in the second state. The antenna assembly has a higher upper hemisphere coverage in the radiation pattern when in the first state than when in the second state. Therefore, when the antenna assembly operates in the first frequency band for satellite communication, it has a higher upper hemisphere coverage in the radiation pattern. When the antenna assembly communicates with a satellite using the first frequency band, it has better communication performance. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 A schematic diagram of the structure of an antenna assembly provided in the first embodiment of the related art;

[0014] Figure 2 for Figure 1 The diagram shows the current flow direction of the antenna assembly in Mode 1.

[0015] Figure 3 for Figure 1 The diagram shows the current flow direction of the antenna assembly in Mode 2.

[0016] Figure 4 for Figure 1 The S1,1 curve and efficiency diagram of the antenna assembly shown are illustrated.

[0017] Figure 5 for Figure 1 The antenna assembly shown supports the radiation pattern in mode two.

[0018] Figure 6 A schematic diagram of the antenna assembly provided in the second embodiment of the related art;

[0019] Figure 7 for Figure 6 A schematic diagram of the current flow in the resonant mode of the antenna assembly shown.

[0020] Figure 8 for Figure 6 The S1,1 curve and efficiency diagram of the antenna assembly shown are illustrated.

[0021] Figure 9 for Figure 6 The radiation pattern of the resonant modes supported by the antenna assembly shown;

[0022] Figure 10 A schematic diagram of the antenna assembly provided in the third embodiment of the related technology;

[0023] Figure 11 for Figure 10 A schematic diagram of the current flow in the resonant mode of the antenna assembly shown.

[0024] Figure 12 for Figure 10 The S1,1 curve and efficiency diagram of the antenna assembly shown are illustrated.

[0025] Figure 13 for Figure 10 The radiation pattern of the resonant modes supported by the antenna assembly shown;

[0026] Figure 14 This is a schematic diagram of the structure of an antenna assembly provided in one embodiment of this application;

[0027] Figure 15 for Figure 14 The diagram shows the current flow direction when the second matching circuit in the antenna assembly is configured such that the second terminal is short-circuited.

[0028] Figure 16 for Figure 14 The second matching circuit of the antenna assembly shown is configured such that the S1,1 curve and efficiency diagram are displayed when the second terminal is short-circuited.

[0029] Figure 17 for Figure 14 The second matching circuit of the antenna assembly shown is configured to produce a radiation pattern when the second terminal is short-circuited;

[0030] Figure 18 for Figure 14 The diagram shows the current flow direction when the second matching circuit in the antenna assembly is open.

[0031] Figure 19 for Figure 14 The second matching circuit of the antenna assembly shown is configured such that the S1,1 curve and efficiency diagram are shown when the second terminal is open.

[0032] Figure 20 for Figure 14 The second matching circuit of the antenna assembly shown is configured such that the radiation pattern is open at the second terminal;

[0033] Figure 21 for Figure 14 The second matching circuit of the antenna assembly provided in the middle is configured to make the upper hemisphere proportion data map when the second end is short-circuited and open-circuited;

[0034] Figure 22 This is a schematic diagram of the antenna assembly provided in the fourth embodiment of the related technology;

[0035] Figure 23 for Figure 1 The diagram shows the current flow direction of the antenna assembly in Mode 1.

[0036] Figure 24 for Figure 22 The diagram shows the current flow direction of the antenna assembly in Mode 2.

[0037] Figure 25 for Figure 22 The S1,1 curve and efficiency diagram of the antenna assembly shown are illustrated.

[0038] Figure 26 for Figure 22 The antenna assembly shown supports the radiation pattern in Mode 1;

[0039] Figure 27 for Figure 22 The diagram shown illustrates the upper hemisphere proportion when the antenna assembly supports the fourth preset frequency band.

[0040] Figure 28 This is a schematic diagram of the structure of an antenna assembly provided in one embodiment of this application;

[0041] Figure 29 for Figure 28 An equivalent schematic diagram of the antenna assembly in the image when the first end is open-circuited;

[0042] Figure 30 for Figure 29 A schematic diagram of the current distribution in the first mode of the antenna assembly;

[0043] Figure 31 for Figure 29 A schematic diagram of the current distribution in the second mode of the antenna assembly;

[0044] Figure 32 for Figure 29 A schematic diagram of the current distribution in the third mode of the antenna assembly;

[0045] Figure 33 for Figure 29 The diagram shows the S-parameters of the antenna assembly.

[0046] Figure 34 for Figure 29 The antenna assembly shown supports the radiation pattern of the first frequency band;

[0047] Figure 35 for Figure 29 The diagram shows the upper hemisphere proportions when the antenna assembly supports the first frequency band.

[0048] Figure 36 A schematic diagram of the structure of an antenna assembly provided in another embodiment of this application;

[0049] Figure 37 for Figure 36 A partial structural schematic diagram of the antenna assembly shown;

[0050] Figure 38 for Figure 28 An equivalent schematic diagram of the antenna assembly when the first end is short-circuited;

[0051] Figure 39 for Figure 38 A schematic diagram of the current distribution in the fourth mode of the antenna assembly;

[0052] Figure 40 for Figure 38 A schematic diagram of the current distribution in the fifth mode of the antenna assembly;

[0053] Figure 41 for Figure 38 The S1,1 curve and efficiency diagram of the antenna assembly shown are shown when it is in the second state.

[0054] Figure 42 for Figure 38 The radiation pattern shown is when the antenna assembly is in the second state;

[0055] Figure 43 for Figure 38 The diagram shows the proportion of the upper hemisphere when the antenna assembly is in the second state.

[0056] Figure 44 A schematic diagram of the structure of an antenna assembly provided in yet another embodiment of this application;

[0057] Figure 45 for Figure 44 A partial structural schematic diagram of the antenna assembly shown;

[0058] Figure 46 A schematic diagram of the current mode when the antenna assembly provided in one embodiment of this application supports the second frequency band;

[0059] Figure 47 for Figure 46 The antenna assembly shown in the diagram supports the second frequency band, with S2,2 curves and an efficiency diagram.

[0060] Figure 48 for Figure 46The diagram shows the upper hemisphere proportions when the antenna assembly supports the second frequency band.

[0061] Figure 49 A comparison table of the upper hemisphere proportions for the three antenna components;

[0062] Figure 50 A schematic diagram comparing the radiation patterns and current of three antenna components;

[0063] Figure 51 A schematic diagram of an antenna assembly provided in another embodiment of this application;

[0064] Figure 52 for Figure 28 A schematic diagram showing another angle of the provided antenna assembly;

[0065] Figure 53 A schematic diagram of an electronic device provided according to one embodiment of this application;

[0066] Figure 54 for Figure 53 A partial structural diagram of the electronic device shown;

[0067] Figure 55 A circuit block diagram of an electronic device provided in one embodiment of this application.

[0068] Explanation of key component designations:

[0069] Electronic device 1, antenna assembly 10, mid-frame 30, processor 50, display screen 70, housing 90;

[0070] First radiator 110, first end 111, first connection point P1, first grounding point G1, feed point P2, second grounding point G2, second connection point P3, second end 112;

[0071] First feed S1, second feed S2, first matching circuit M1, third matching circuit M2, second matching circuit M3, matching branch 131, switch 132, first connection terminal 1321, second connection terminal 1322;

[0072] Second radiator 120, third end 121, fourth end 122, coupling gap 120a, first radiating part 120b, second radiating part 120c;

[0073] Grounding bar 130;

[0074] The frame body 310, the frame 320, the first frame 321, the second frame 322, the outer surface 320a, the first gap 320b, and the second gap 320c. Detailed Implementation

[0075] The technical solution of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the embodiments described in this application are only a part of the embodiments, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments provided in this application without creative effort are within the protection scope of this application.

[0076] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment to other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0077] The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a particular order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, an assembly or device comprising one or more components is not limited to the one or more components listed, but may optionally also include one or more components not listed but inherent to the exemplified product, or one or more components that it should have based on the described function.

[0078] One embodiment of this application provides an antenna assembly 10. Before introducing the antenna assembly 10 provided in this application, some antenna structures used in the antenna assembly 10 provided in this application will be introduced and compared. These antenna assemblies 10 can be regarded as antenna assemblies 10 in related technologies (not prior art) before the improvement of the antenna assembly 10 provided in this application.

[0079] Please refer to the following: Figure 1 , Figure 2 and Figure 3 , Figure 1 A schematic diagram of the structure of an antenna assembly provided in the first embodiment of the related art; Figure 2 for Figure 1 The diagram shows the current flow direction of the antenna assembly in Mode 1. Figure 3 for Figure 1The diagram shows the current flow of the antenna assembly in Mode 2. In this embodiment, the antenna assembly 10 includes a radiator 210, a matching circuit M0, and a feed source S0. The radiator 210 has two ends, named a first end 211 and a second end 212, respectively. The radiator 210 also has a feed point P2 located between the first end 211 and the second end 212. The feed source S0 is electrically connected to the matching circuit M0 to the feed point P2. As can be seen, the radiator 210, matching circuit M0, and feed source S0 provided in the first embodiment of the related art are similar in shape to a T-shape; therefore, the antenna assembly 10 is also called a T-antenna. In this schematic diagram, the radiator 210 is arranged on top of the floor (also called the ground pole) of the electronic device 1 to which the antenna assembly 10 is applied is used as an example.

[0080] In this embodiment, the antenna assembly 10 supports a first preset frequency band. Specifically, the antenna assembly 10 has a mode one (also referred to as mode 1, i.e., the first resonant mode) and a mode two (also referred to as mode 2, i.e., the second resonant mode) that support the first preset frequency band.

[0081] Depend on Figure 2 It can be seen that the current in mode one includes a first current I from the feed point P2 to the first end 211. 01 and the second current I from the feed point P2 to the second end 212 02 Among them, the first current I 01 The current corresponding to the quarter-wavelength mode of the first preset frequency band supported by the antenna assembly 10; the second current I 02 All of these are the currents corresponding to the quarter-wavelength mode of the first preset frequency band supported by the antenna assembly 10. Mode 1 is more dependent on ground current radiation; therefore, Mode 1 of the T-shaped antenna is called the radiating mode or unbalanced mode. It should be noted that the "wavelength" in "quarter-wavelength mode of the first preset frequency band" refers to the wavelength corresponding to the center frequency point of the first preset frequency band.

[0082] Depend on Figure 3 As can be seen, the current in Mode 2 is distributed from the second end 212 to the first end 211. The current in Mode 2 is the current corresponding to the half-wavelength mode of the radiator 210. The main current in Mode 2 is concentrated on the radiator 210, while the current on the ground is smaller; that is, the radiator 210 itself constitutes a resonant unit. Mode 2 of the T-shaped antenna is also called the balanced mode. The antenna assembly 10 provided in this application mainly focuses on the balanced mode. The characteristics of the balanced mode are that it mainly relies on the radiator 210 itself for radiation, the main radiation direction is upward, and it has good directivity. This will be explained later in conjunction with the radiation pattern of the antenna assembly 10.

[0083] Please see Figure 4 , Figure 4 for Figure 1 The diagram shows the S1,1 curves and efficiency of the antenna assembly. In this diagram, the horizontal axis represents frequency in GHz, and the vertical axis represents dB. In this diagram, curve ① is the S1,1 curve of the antenna assembly 10; curve ② is the system radiation efficiency curve of the antenna assembly 10; and curve ③ is the system total efficiency curve of the antenna assembly 10. As can be seen from this diagram, the first preset frequency band supported by the antenna assembly 10 is 2.4 GHz to 2.6 GHz, exhibiting good system radiation efficiency and system total efficiency. It is understood that in other embodiments, the first preset frequency band may also be other frequency bands, such as 2.0 GHz to 2.2 GHz. The specific value of the first preset frequency band shown in the diagram of this embodiment should not be construed as a limitation on the antenna assembly 10 provided in this application.

[0084] Please see Figure 5 , Figure 5 for Figure 1 The antenna assembly shown supports the radiation pattern of mode two. As can be seen from this simulation diagram, the radiation pattern of the antenna assembly 10 supporting mode two is upward. In other words, the radiation pattern of the antenna assembly 10 supporting the balanced mode is upward.

[0085] Please refer to the following: Figure 6 and Figure 7 , Figure 6 A schematic diagram of the antenna assembly provided in the second embodiment of the related art; Figure 7 for Figure 6The diagram shows the current flow direction of the resonant mode of the antenna assembly. The antenna assembly 10 includes a radiator 210, a matching circuit M0, and a feed source S0. The radiator 210 has two ends, named a first end 211 and a second end 212. That is, the radiator 210 has a first end 211 and a second end 212, and has a feed point P2 located between the first end 211 and the second end 212. The first end 211 is a ground end, that is, the first end 211 is grounded, and the second end 212 is a free end. The feed source S0 is electrically connected from the matching circuit M0 to the feed point P2. As can be seen, the radiator 210, the matching circuit M0, and the feed source S0 provided in the second embodiment of the related art are similar in shape to an inverted F. Therefore, the antenna assembly 10 is also called an inverted-F antenna (IFA) or an IFA antenna. In this schematic diagram, the radiator 210 is arranged on the top of the floor of the electronic device 1 to which the antenna assembly 10 is applied is used as an example.

[0086] In this embodiment, the antenna assembly 10 supports a second preset frequency band. Specifically, the antenna assembly 10 has a resonant mode that supports the second preset frequency band. The resonant mode of the antenna assembly 10 when supporting the second preset frequency band is a quarter-wavelength mode from the first end 211 to the second end 212. Since the antenna assembly 10 is an IFA antenna, the resonant mode is also called an IFA resonant mode or an IFA resonant form. It should be noted that the "wavelength" mentioned here in "the resonant mode of the antenna assembly 10 when supporting the second preset frequency band is a quarter-wavelength mode from the first end 211 to the second end 212" refers to the wavelength corresponding to the center frequency point of the second preset frequency band.

[0087] Please refer to Figure 8 , Figure 8 for Figure 6The diagram shows the S1,1 curves and efficiency of the antenna assembly. In this diagram, the horizontal axis represents frequency in GHz, and the vertical axis represents dB. In this diagram, curve ① is the S1,1 curve of the antenna assembly 10; curve ② is the system radiation efficiency curve of the antenna assembly 10; and curve ③ is the system total efficiency curve of the antenna assembly 10. As can be seen from this diagram, the second preset frequency band supported by the antenna assembly 10 is 2.2 GHz to 2.8 GHz, the resonant frequency of the second preset frequency band is around 2.5 GHz (2.504 GHz in the diagram), and it has good system radiation efficiency and system total efficiency. It is understood that in other embodiments, the second preset frequency band may also be other frequency bands, such as 2.0 GHz to 2.2 GHz, etc. The specific value of the second preset frequency band shown in the diagram of this embodiment should not be construed as a limitation on the antenna assembly 10 provided in this application.

[0088] Please see Figure 9 , Figure 9 for Figure 6 The radiation pattern of the resonant modes supported by the antenna assembly shown. The radiation of the IFA antenna mainly depends on the ground plane (such as the main ground of the PCB circuit board). Along the ground plane, the radiation pattern points from the phase-leading direction to the phase-lag direction. When the IFA antenna is located above the ground plane, the lower part of the ground plane is the phase-lag position. Therefore, the radiation pattern of the antenna assembly 10 supporting the second preset frequency band points downward.

[0089] As can be seen from the foregoing, the antenna assembly 10 provided in the first embodiment of the related art has a different orientation than the antenna assembly 10 provided in the second embodiment of the related art.

[0090] Please see Figure 10 and Figure 11 , Figure 10 A schematic diagram of the antenna assembly provided in the third embodiment of the related technology; Figure 11 for Figure 10The diagram shows the current flow direction of the resonant mode of the antenna assembly. The antenna assembly 10 includes a radiator 210, a matching circuit M0, and a feed source S0. The radiator 210 has a first end 211 and a second end 212. The radiator 210 also has a ground point P0 and a feed point P2. The ground point P0 is grounded. The ground point P0 and the feed point P2 are both located between the first end 211 and the second end 212, and the feed point P2 is closer to the second end 212 than the ground point P0. The feed source S0 is electrically connected to the matching circuit M0 to the feed point P2. It can be seen that the shape of the radiator 210, the matching circuit M0, and the feed source S0 provided in the third embodiment of the related art is similar to that of a T-shaped antenna. If the first end 211 is short-circuited (e.g. Figure 10 As shown, if the radiator is electrically connected to the ground electrode, the grounding point P0, which is electrically connected to the ground electrode, will short-circuit the radiating portion of the radiator 210 located between the grounding point P0 and the first end 111. In this case, the antenna assembly 10 can be equivalent to an IFA antenna. In this schematic diagram, the radiator 210 is illustrated as being located on top of the floor of the electronic device 1 to which the antenna assembly 10 is applied.

[0091] In this embodiment, the antenna assembly 10 supports a third preset frequency band. Specifically, the antenna assembly 10 has a resonant mode that supports the third preset frequency band. The resonant mode of the antenna assembly 10 when supporting the third preset frequency band is a quarter-wavelength mode from the ground point P0 to the second end 212. Since the antenna assembly 10 can be equivalent to an IFA antenna when the first end 211 is short-circuited, the resonant mode is also called an IFA resonant mode or an IFA resonant form. It should be noted that the "wavelength" in "the resonant mode of the antenna assembly 10 when supporting the third preset frequency band is a quarter-wavelength mode from the ground point P0 to the second end 212" refers to the wavelength corresponding to the center frequency of the third preset frequency band.

[0092] Please see Figure 12 , Figure 12 for Figure 10The diagram shows the S1,1 curves and efficiency of the antenna assembly. In this diagram, the horizontal axis represents frequency in GHz, and the vertical axis represents dB. Curve ① is the S1,1 curve of the antenna assembly 10; curve ② is the system radiation efficiency curve of the antenna assembly 10; and curve ③ is the system total efficiency curve of the antenna assembly 10. As can be seen from this diagram, the third preset frequency band supported by the antenna assembly 10 is 2.0 GHz to 2.2 GHz, and it has good system radiation efficiency and system total efficiency. It is understood that in other embodiments, the third preset frequency band may be other frequency bands, and the specific value of the third preset frequency band shown in this embodiment should not be construed as a limitation on the antenna assembly 10 provided in this application.

[0093] Please see Figure 13 , Figure 13 for Figure 10 The radiation pattern of the resonant mode supported by the antenna assembly shown. The radiation of the IFA antenna mainly depends on the ground plane (such as the main ground of the PCB circuit board). Along the ground plane, the radiation pattern points from the phase-leading direction to the phase-lag direction. When the IFA antenna is located above the ground plane, the lower part of the ground plane is the phase-lag position. Therefore, the radiation pattern of the antenna assembly 10 supporting the third preset frequency band points downward.

[0094] As can be seen from the foregoing, the antenna assembly 10 provided in the first embodiment of the related art has a different orientation than the antenna assembly 10 provided in the second embodiment of the related art.

[0095] Please refer to the following: Figure 14 , Figure 15 , Figure 14 This is a schematic diagram of the structure of an antenna assembly provided in one embodiment of this application; Figure 15 for Figure 14The diagram illustrates the current flow direction when the second matching circuit in the antenna assembly is short-circuited at the second terminal. The antenna assembly 10 includes a first radiator 110, a first matching circuit M1, a second matching circuit M3, a first feed S1, and a second radiator 120. The first radiator 110 has a first terminal 111 and a second terminal 112. The first radiator 110 also has a first ground point G1 and a feed point P2. The first ground point G1 is grounded, and both the first ground point G1 and the feed point P2 are located between the first terminal 111 and the second terminal 112, with the feed point P2 being closer to the second terminal 112 than the first ground point G1. The second matching circuit M3 is electrically connected to the first terminal 111. The second matching circuit M3 includes a switch that can control the second terminal 112 to be open-circuited or short-circuited. The first feed S1 is electrically connected to the first matching circuit M1 to the feed point P2. The second radiator 120 also has two ends, named the third end 121 and the fourth end 122. The third end 121 is opposite to and spaced apart from the second end 112 to form a coupling gap 120a, and the fourth end 122 is grounded. In the schematic diagram of this embodiment, the second radiator 120 includes two radiating portions that are bent and connected, with a shape similar to an L. Therefore, the second radiator 120 is also called an L-shaped parasitic branch. In this schematic diagram, it is illustrated by taking an example where both the first radiator 110 and the second radiator 120 are disposed on the top of the floor of the electronic device 1 to which the antenna assembly 10 is applied.

[0096] When the second matching circuit M3 is configured to short-circuit the second terminal 112, the antenna assembly 10 constitutes an EE-type antenna. Specifically, when the second matching circuit M3 is configured to short-circuit the second terminal 112, the first radiator 110, the first feed S1, and the first matching circuit M1 constitute an IFA antenna. The second radiator 120 and the first radiator 110 receive energy from the first feed S1 through electric field coupling (Electric Field-Electric Field, EE) via the coupling gap 120a. Therefore, the antenna assembly 10 is also referred to as an EE-type antenna, or an EE antenna, or an EE-type antenna, or an EE antenna. In this embodiment, the EE-type antenna is equivalent to... Figure 6 The second radiator 120 is added as a parasitic branch in the technical implementation of the corresponding embodiment (the second embodiment of this application).

[0097] The second matching circuit M3 can be configured to cause the antenna assembly 10 to have either a first state where the first terminal 111 is open or a second state where the first terminal 111 is short-circuited. When the antenna assembly 10 operates in the first frequency band supporting satellite communication, the second matching circuit M3 is configured to cause the antenna assembly 10 to be in the first state. When the antenna assembly 10 operates in a frequency band other than the first frequency band, the second matching circuit M3 is configured to cause the antenna assembly 10 to be in the second state. The antenna assembly 10 has a higher upper hemisphere octane in the radiation pattern when it is in the first state than when it is in the second state.

[0098] The second matching circuit M3 can be configured to place the antenna assembly 10 in different states. When the antenna assembly 10 operates in the first frequency band supporting satellite communication, the second matching circuit M3 is configured to place the antenna assembly 10 in the first state. When the antenna assembly 10 operates in a frequency band other than the first frequency band, the second matching circuit M3 is configured to place the antenna assembly 10 in the second state. The antenna assembly 10 has a higher upper hemisphere coverage in the radiation pattern when in the first state than when in the second state. Therefore, when the antenna assembly 10 operates in the first frequency band of satellite communication, it has a higher upper hemisphere coverage in the radiation pattern. When the antenna assembly 10 communicates with a satellite using the first frequency band, it has better communication performance.

[0099] In this embodiment, the antenna assembly 10 generates dual-wavelength EE dual-mode, which includes a balanced mode and a radiating mode. In this embodiment, the mode primarily analyzed is the balanced mode (also known as the EE balanced mode). For the mode current of the balanced mode, please refer to [reference needed]. Figure 15 Specifically, in this embodiment, the balanced mode includes a quarter-wavelength mode from the second terminal 112 to the first ground point G1, and a reverse current is generated between the third terminal 121 and the fourth terminal 122, which flows in the opposite direction to the current flow between the second terminal 112 and the first ground point G1. Specifically, the current corresponding to the quarter-wavelength mode from the second terminal 112 to the first ground point G1 is labeled as current I. 03 The current between the third terminal 121 and the fourth terminal 122 is labeled as current I. 04 , where current I 04 The direction of flow and the current I 03 The flow direction is opposite.

[0100] In this embodiment, when the second matching circuit M3 is configured to short-circuit the second terminal 112, the antenna assembly 10 supports the first frequency band. It should be noted that since the antenna assembly 10 supports the first frequency band when the second matching circuit M3 is configured to short-circuit the second terminal 112, and the balanced mode includes a quarter-wavelength mode from the second terminal 112 to the first ground point G1, the "wavelength" refers to the wavelength corresponding to the center frequency of the first frequency band.

[0101] Please see Figure 16 , Figure 16 for Figure 14 The second matching circuit of the antenna assembly shown is configured such that the S1,1 curve and efficiency diagram are displayed when the second terminal is short-circuited. In this diagram, the horizontal axis represents frequency in GHz, and the vertical axis represents dB. In this diagram, curve ① is the S1,1 curve of the antenna assembly 10; curve ② is the system radiation efficiency curve of the antenna assembly 10; and curve ③ is the system total efficiency curve of the antenna assembly 10. As can be seen from this diagram, the first frequency band supported by the antenna assembly 10 is 2.0 GHz to 2.2 GHz, and it has good system radiation efficiency and system total efficiency. It is understood that in other embodiments, the first frequency band may also be other frequency bands, and the specific value of the first frequency band shown in the diagram of this embodiment should not be construed as a limitation on the antenna assembly 10 provided in this application.

[0102] Please see Figure 17 , Figure 17 for Figure 14 The second matching circuit of the antenna assembly shown is configured such that the second terminal 112 is short-circuited. As can be seen from this radiation pattern, the radiation pattern of the antenna assembly 10 when the second matching circuit M3 is configured to short-circuit the second terminal 112 is quite similar to the radiation pattern of the IFA antenna provided in the second embodiment of this application. Although the antenna assembly 10 provided in the fourth embodiment of this application includes a second radiator 120 as a parasitic branch, the radiation pattern of the antenna assembly 10 provided in the fourth embodiment of this application does not change much when the second matching circuit M3 is configured to short-circuit the second terminal 112, compared to the radiation pattern of the antenna assembly 10 provided in the second embodiment of this application. The upper hemisphere occupies 46% of the radiation pattern of the antenna assembly 10 provided in the fourth embodiment of this application when the second matching circuit M3 is configured to short-circuit the second terminal 112, indicating that the main radiation is not upward.

[0103] Please see Figure 18 , Figure 18for Figure 14 The diagram shows the current flow when the second matching circuit in the antenna assembly is configured such that the second end is open. When the second matching circuit M3 is configured such that the second end 112 is open (i.e., the second end 112 is not electrically connected to ground), the first radiator 110, the first matching circuit M1, and the first feed S1 constitute a T-shaped antenna. Since the second radiator 120 is a parasitic stub, and its shape is similar to an L-shape, the antenna assembly 10 is a T+L parasitic form. When the second matching circuit M3 is configured such that the second end 112 is open, the antenna assembly 10 also generates dual waves, that is, it generates two radiation modes. The first mode is an EE balanced mode, and the second mode is a T balanced mode.

[0104] The current form in the antenna assembly 10 is shown below. Figure 18 As shown. Specifically, the current corresponding to the first mode is the current from the second terminal 112 to the first ground point G1 and the current from the third terminal 121 to the fourth terminal 122 on the first radiator 110. The current corresponding to the second mode is the current from the second terminal 112 to the first ground point G1 and the current from the first ground point G1 to the first terminal 111. In summary, in this embodiment, the modes of the antenna assembly 10 include a quarter-wavelength mode from the second terminal 112 to the first ground point G1, accompanied by a reverse current from the third terminal 121 to the fourth terminal 122 and a unidirectional current from the first ground point G1 to the first terminal 111. Specifically, the current corresponding to the quarter-wavelength mode from the second terminal 112 to the first ground point G1 is denoted as I. 05 The current from the third terminal 121 to the fourth terminal 122 is marked as I. 06 The current from the first grounding point G1 to the first terminal 111 is marked as I. 07 , where current I 06 The direction of flow and current I 05 The current I flows in the opposite direction. 07 The direction of flow and current I 05 The current flows in the same direction. It should be noted that, compared to... Figure 15 The difference is that, in Figure 15 The primary mode is the IFA grounding mode (current distribution is from the second terminal 112 to the first grounding point G1), while... Figure 18 In this configuration, the dominant mode is the balanced mode of the T-antenna (current distribution from the second terminal 112 to the first terminal 111). As previously described, the balanced mode of the T-antenna can enhance upward radiation. In this embodiment, when the second matching circuit M3 is configured such that the second terminal 112 is open, the antenna assembly 10 supports the first frequency band.

[0105] Please see Figure 19 , Figure 19 for Figure 14 The second matching circuit of the antenna assembly shown is configured such that the S1,1 curve and efficiency diagram are displayed when the second terminal is open. In this diagram, the horizontal axis represents frequency in GHz, and the vertical axis represents dB. In this diagram, curve ① is the S1,1 curve of the antenna assembly 10; curve ② is the system radiation efficiency curve of the antenna assembly 10; and curve ③ is the system total efficiency curve of the antenna assembly 10. As can be seen from this diagram, the first frequency band supported by the antenna assembly 10 is 2.0 GHz to 2.2 GHz, and it has good system radiation efficiency and system total efficiency. It is understood that in other embodiments, the first frequency band may also be other frequency bands, and the specific value of the first frequency band shown in the diagram of this embodiment should not be construed as a limitation on the antenna assembly 10 provided in this application.

[0106] Please see Figure 20 , Figure 20 for Figure 14 The second matching circuit of the antenna assembly shown is configured such that the radiation pattern when the second terminal 112 is open is more biased upwards. As can be seen from this radiation pattern, when the second matching circuit M3 is configured such that the second terminal 112 is open, the radiation pattern of the antenna assembly 10 is more biased upwards, at which point the upper hemisphere accounts for 53.6%.

[0107] Please refer to the following: Figure 17 , Figure 20 and Figure 21 , Figure 21 for Figure 14 The second matching circuit of the antenna assembly provided is configured to display the upper hemisphere percentage data map when the second part is short-circuited and open-circuited. (This is in response to...) Figure 14 The antenna assembly 10 provided in the fourth embodiment of this application has a radiation pattern when the second matching circuit M3 is configured to short-circuit the second terminal 112 (see [link]). Figure 17 ), and the second matching circuit M3 is configured such that the radiation pattern when the second terminal 112 is open (see Figure 20As can be seen, the second matching circuit M3 of the antenna assembly 10 is configured such that the upper hemisphere proportion is 46% when the second terminal 112 is short-circuited; and the upper hemisphere proportion is 53.6% when the second terminal 112 is open-circuited, which is 7.6% higher than the upper hemisphere proportion when the second terminal 112 is short-circuited. Therefore, by controlling the state of the second matching circuit M3 in the antenna assembly 10 (e.g., controlling the on or off state of the switch 132 of the second matching circuit M3), the second terminal 112 can be short-circuited or open-circuited, thereby changing the main mode of the antenna assembly 10 from the IFA mode (the main mode when the second matching circuit M3 is configured to short-circuit the second terminal 112) to the T-shaped mode (the main mode when the second matching circuit M3 is configured to open-circuit the second terminal 112), thus significantly increasing the upper hemisphere proportion of mode two (i.e., the balanced mode).

[0108] Please refer to the following: Figure 22 , Figure 23 and Figure 24 , Figure 22 This is a schematic diagram of the antenna assembly provided in the fourth embodiment of the related technology; Figure 23 for Figure 1 The diagram shows the current flow direction of the antenna assembly in Mode 1. Figure 24 for Figure 22 The diagram shows the current flow of the antenna assembly in Mode 2. The antenna assembly 10 includes a first radiator 110, a first matching circuit M1, a second matching circuit M3, a feed source S0, and a second radiator 120. The first radiator 110 has a first end 211 and a second end 212. The first radiator 110 also has a feed point P2. The feed source S0 is electrically connected from the first matching circuit M1 to the feed point P2. The second radiator 120 also has two ends, named a third end 213 and a fourth end 214, and has a first connection point P1. The third end 213 is opposite to and spaced apart from the second end 212 to form a coupling gap 120a, and the fourth end 214 is grounded. One end of the second matching circuit M3 is electrically connected to the first connection point P1, and the other end of the second matching circuit M3 is grounded. In this embodiment, and in other embodiments, the second matching circuit M3 can also be removed. Correspondingly, the grounding point P0 that the second matching circuit M3 is electrically connected to the ground electrode can also be removed. In this case, the third end 213 is disconnected from the ground electrode.

[0109] In this embodiment, the first radiator 110, the first matching circuit M1, and the feed S0 constitute an IFA antenna. In the schematic diagram of this embodiment, the second radiator 120 includes two bent and connected radiating sections, resembling an L-shape. Therefore, the second radiator 120 is also referred to as an L-shaped parasitic stub. Therefore, the antenna assembly 10 is also referred to as an IFA+L EE antenna.

[0110] In this schematic diagram, it is illustrated by taking an example where both the first radiator 110 and the second radiator 120 are disposed on the top of the floor of the electronic device 1 to which the antenna assembly 10 is applied.

[0111] In this embodiment, the antenna assembly 10 supports a fourth preset frequency band. Specifically, the antenna assembly 10 has a mode one (also referred to as mode 1, i.e., the first resonant mode) and a mode two (also referred to as mode 2, i.e., the second resonant mode) that support the fourth preset frequency band. In this embodiment, mode one is also referred to as the radiating mode or radiating mode of EE. Specifically, mode one includes a quarter-wavelength mode from the first end 211 to the second end 212, and a current in the same direction as the current flow from the first end 211 to the second end 212 is formed between the third end 213 and the fourth end 214. Please refer to the current corresponding to mode one. Figure 23 The current corresponding to the quarter-wavelength mode from the first end 211 to the second end 212 is labeled as current I. 08 The current between the third end 213 and the fourth end 214 is labeled as current I. 09 , wherein the current I 09 With the I 08 The current flows in the same direction.

[0112] In this embodiment, mode two is also referred to as the balanced mode of EE or the balanced mode. Specifically, mode two includes a quarter-wavelength mode from the first end 211 to the second end 212, and a reverse current is formed between the third end 213 and the fourth end 214, which flows in the opposite direction to the current flow from the first end 211 to the second end 212. For the current corresponding to mode two, please refer to [link to relevant documentation]. Figure 24 The current corresponding to the quarter-wavelength mode from the first end 211 to the second end 212 is labeled as current I. 10 The current between the third end 213 and the fourth end 214 is labeled as current I. 10 ’ , wherein the current I 10 ’ With the I 10 The current flows in the opposite direction.

[0113] Since Mode 1 is more efficient than Mode 2 in this implementation, Mode 1 is adopted as the primary mode. Therefore, this analysis focuses on the method for increasing the proportion of the upper hemisphere in the directional pattern of Mode 1.

[0114] Please see Figure 25 , Figure 25 for Figure 22 The diagram shows the S1,1 curves and efficiency of the antenna assembly. In this diagram, the horizontal axis represents frequency in GHz, and the vertical axis represents dB. In this diagram, curve ① is the S1,1 curve of the antenna assembly 10; curve ② is the system radiation efficiency curve of the antenna assembly 10; and curve ③ is the system total efficiency curve of the antenna assembly 10. As can be seen from this diagram, the fourth preset frequency band supported by the antenna assembly 10 is 1.9 GHz to 2.1 GHz, exhibiting good system radiation efficiency and system total efficiency. It is understood that in other embodiments, the fourth preset frequency band may also be other frequency bands, such as 2.0 GHz to 2.2 GHz. The specific values ​​of the fourth preset frequency band shown in the diagram of this embodiment should not be construed as limiting the antenna assembly 10 provided in this application.

[0115] Please see Figure 26 and Figure 27 , Figure 26 for Figure 22 The antenna assembly shown supports the radiation pattern in Mode 1; Figure 27 for Figure 22 The diagram shows the upper hemisphere octane percentage when the antenna assembly supports the fourth preset frequency band. Figure 26 As shown in the simulation diagram, the antenna assembly 10 supports an upward-facing radiation pattern in Mode 1. Figure 27 In the diagram, the horizontal axis represents frequency in GHz; the vertical axis represents energy value. Point 1's vertical axis value indicates the energy radiated upwards when the antenna assembly 10 supports the fourth preset frequency band; point 2's vertical axis value indicates the total energy radiated outwards when the antenna assembly 10 supports the fourth preset frequency band. Therefore, dividing the vertical axis value of point 1 by the vertical axis value of point 2 represents the upper hemisphere proportion when the antenna assembly 10 supports the fourth preset frequency band. Figure 27 As can be seen, the upper hemisphere occupancy of the antenna assembly 10 when supporting the fourth preset frequency band is 54.3%.

[0116] In various embodiments of the related technology, the frequency bands supported by the antenna component 10 are named as the first preset frequency band, the second preset frequency band, the third preset frequency band, and the fourth preset frequency band. It is understood that the above names are only for distinguishing the frequency bands supported by the antenna component 10 in different embodiments of the related technology, and do not mean that the frequencies of each frequency band are different. The first preset frequency band, the second preset frequency band, the third preset frequency band, and the fourth preset frequency band can be the same frequency band, for example, all of which are frequency bands supporting satellite communication (i.e., the first frequency band mentioned later), for example, the frequency range can all be 2.0 GHz to 2.2 GHz.

[0117] The antenna assembly 10 provided in other embodiments of this application will be described next.

[0118] Please see Figure 28 , Figure 29 and Figure 30 , Figure 28 This is a schematic diagram of the structure of an antenna assembly provided in one embodiment of this application; Figure 29 for Figure 28 An equivalent schematic diagram of the antenna assembly in the image when the first end is open-circuited; Figure 30 for Figure 29A schematic diagram of the current distribution of the antenna assembly in the first mode is shown. The antenna assembly 10 includes a first radiator 110, a first matching circuit M1, a first feed source S1, a second radiator 120, and a second matching circuit M3. The first radiator 110 includes a first terminal 111, a first connection point P1, a first ground point G1, a feed point P2, and a second terminal 112. The first ground point G1 is located between the first terminal 111 and the second terminal 112. The first connection point P1 is located between the first terminal 111 and the first ground point G1. The feed point P2 is located between the second terminal 112 and the first ground point G1. The first ground point G1 is grounded. The first feed source S1 is electrically connected to the first matching circuit M1 to the feed point P2, and is used to feed the first radiator 110 with an excitation signal supporting a first frequency band for satellite (e.g., but not limited to, Tiantong satellite) communication. The second radiator 120 includes a third terminal 121 and a fourth terminal 122. The third terminal 121 is opposite to and spaced from the second terminal 112 to form a coupling gap 120a, and the fourth terminal 122 is grounded. The second matching circuit M3 is electrically connected to the first connection point P1, and the second matching circuit M3 can be configured to cause the antenna assembly 10 to have a first state where the first terminal 111 is open or a second state where the first terminal 111 is short-circuited. When the antenna assembly 10 operates in the first frequency band supporting satellite communication, the second matching circuit M3 is configured to cause the antenna assembly 10 to be in the first state. When the antenna assembly 10 operates in a frequency band other than the first frequency band, the second matching circuit M3 is configured to cause the antenna assembly 10 to be in the second state, wherein the antenna assembly 10 has a higher upper hemisphere octane in the radiation pattern when it is in the first state than when it is in the second state.

[0119] When the antenna assembly 10 operates in the first frequency band supporting satellite communication, the second matching circuit M3 is configured to place the antenna assembly 10 in the first state. When the antenna assembly 10 operates in a frequency band other than the first frequency band, the second matching circuit M3 is configured to place the antenna assembly 10 in the second state. The antenna assembly 10 has a higher upper hemisphere coverage in the radiation pattern when in the first state than when in the second state. Therefore, when the antenna assembly 10 operates in the first frequency band of satellite communication, it has a higher upper hemisphere coverage in the radiation pattern. When the antenna assembly 10 communicates with a satellite using the first frequency band, it has better communication performance.

[0120] Specifically, in one embodiment, when the second matching circuit M3 is configured to place the antenna assembly 10 in the first state, the antenna assembly 10 has a first mode. The first mode includes a quarter-wavelength mode from the first ground point G1 to the second terminal 112, and a current flowing in the same direction as the current from the first ground point G1 to the second terminal 112 is formed at the third terminal 121 and the fourth terminal 122, and a current flowing in the same direction as the current from the first ground point G1 to the second terminal 112 is formed at the first terminal 111 to the first ground point G1.

[0121] The first radiator 110 can be a laser direct-structuring (LDS) radiator, a flexible printed circuit (FPC) radiator, a printed direct-structuring (PDS) radiator, or a metal dendrite radiator. When the antenna assembly 10 is applied to electronic device 1 (see...), Figure 53 and Figure 54 In this case, the first radiator 110 can be a mechanical design antenna (MDA) radiator designed using the embedded metal of the electronic device 1 itself. For example, the first radiator 110 can be an antenna radiator designed using the plastic and metal mid-frame 30 of the electronic device 1. In addition, the first radiator 110 can also be a metal frame antenna radiator designed with the metal mid-frame 30.

[0122] It is understood that this application does not specifically limit the shape, structure, and material of the first radiator 110. The shape of the first radiator 110 includes, but is not limited to, bent, straight, L-shaped, sheet-like, rod-like, coated, and thin film shapes. When the first radiator 110 is strip-shaped, this application does not limit the extension trajectory of the first radiator 110. Therefore, the first radiator 110 can extend along a straight line, curve, or multi-segment bend trajectory. The first radiator 110 described above can be a line of uniform width along its extension trajectory, or it can be an irregular shape with varying widths, such as a gradually changing width or a widened area. In the schematic diagram of this embodiment, the first radiator 110 extends along a straight trajectory. It is understood that the first radiator 110 shown in the schematic diagram of this embodiment should not be construed as a limitation on the first radiator 110 provided in the embodiment of this application.

[0123] In one embodiment, the first grounding point G1 can be electrically connected to the ground electrode (also called a ground plane, ground system, or system ground) through a grounding structure such as a conductive spring, a conductive connecting rib (e.g., a metal connecting rib), or a pin connector (POP-pin) to be grounded. When the antenna assembly 10 is applied in the electronic device 1, the ground electrode can be, but is not limited to, the electronic device 1 (see...). Figure 53 and Figure 54 The first grounding point G1 can be grounded in the frame body 310 of the middle frame 30, the ground in the circuit board, the shielding of the display screen 70, or a conductive battery cover, etc. In another embodiment, when the antenna assembly 10 is applied to the electronic device 1, and the first radiator 110 is an MDA radiator or a metal frame antenna radiator, the specific description of the grounding of the first grounding point G1 is as follows. The electronic device 1 includes a middle frame 30. The middle frame 30 includes a frame body 310 and a frame 320. The frame body 310 can serve as a ground electrode, and the frame 320 surrounds the periphery of the frame body 310 and is connected to the frame body 310. The first radiator 110 is formed in the frame 320, and the first grounding point G1 of the first radiator 110 is connected to the frame body 310 to be grounded.

[0124] In this embodiment, the example is illustrated by taking the case where both the first radiator 110 and the second radiator 120 are disposed on the top 1a of the floor of the electronic device 1 to which the antenna assembly 10 is applied.

[0125] The first feed source S1 and the first matching circuit M1 may be located on a circuit board. The feed source is used to generate a first excitation signal. The first excitation signal is used to excite the first radiator 110 and the second radiator 120 to support a first frequency band for satellite communication. In one embodiment, the frequency range of the first frequency band may be, but is not limited to, 2.0 GHz to 2.2 GHz. The first feed source S1 may be electrically connected to the feed point P2 by, but is not limited to, conductive springs, conductive connecting ribs (such as metal connecting ribs), or pin connectors (POP-pins) and other electrically conductive components connected to the feed point P2.

[0126] The second radiator 120 can be a laser direct structural (LDS) radiator, a flexible printed circuit (FPC) radiator, a printed direct structural (PDS) radiator, or a metal stub radiator. When the antenna assembly 10 is applied to the electronic device 1, the second radiator 120 can be a mechanical design antenna (MDA) radiator designed using the embedded metal of the electronic device 1 itself. For example, the second radiator 120 can be an antenna radiator designed using the plastic and metal mid-frame 30 of the electronic device 1. Furthermore, the second radiator 120 can also be a metal frame antenna radiator designed with the metal mid-frame 30.

[0127] It is understood that this application does not specifically limit the shape, structure, and material of the second radiator 120. The shape of the second radiator 120 includes, but is not limited to, bent, straight, L-shaped, sheet-like, rod-like, coated, and thin film shapes. When the second radiator 120 is strip-shaped, this application does not limit the extension trajectory of the second radiator 120; therefore, the second radiator 120 can extend along a straight line, a curve, or multiple bends. The second radiator 120 described above can be a line of uniform width along its extension trajectory, or it can be an irregular shape with varying widths, such as a gradually changing width or a widened area. In the schematic diagram of this embodiment, the second radiator 120 is illustrated as including two bent and connected parts. It is understood that the second radiator 120 shown in the schematic diagram of this embodiment should not be construed as a limitation on the second radiator 120 provided in this application embodiment.

[0128] The third end 121 is opposite to the second end 112 and is spaced apart to form a coupling gap 120a, through which the second radiator 120 can be coupled to the first radiator 110.

[0129] In one embodiment, the second radiator 120 further has a second connection point P3 located at the third end 121 and the fourth end 122. The antenna assembly 10 also includes a third matching circuit M2. One end of the third matching circuit M2 is grounded, and the other end of the third matching circuit M2 is electrically connected to the second connection point P3.

[0130] The third matching circuit M2 may be located on a circuit board. One end of the third matching circuit M2 may be connected to the second connection point P3 via a conductive spring, a conductive connecting rib (such as a metal connecting rib), or a pin connector. The third matching circuit M2 may be connected to the ground electrode via a conductive spring, a conductive connecting rib (such as a metal connecting rib), or a pin connector. It is understood that in other embodiments, the second radiator 120 may not have the second connection point P3, and the antenna assembly 10 may not have the third matching circuit M2.

[0131] The fourth terminal 122 can be grounded in a manner that is not limited to, but can be, a conductive spring, a conductive connecting rib (such as a metal connecting rib), or a pin connector (POP-pin), etc., connected to the ground electrode.

[0132] In one embodiment, the first matching circuit M1 can be used to switch between a first frequency band for satellite communication and a preset frequency band for cellular communication supported by the antenna assembly 10. For example, when the first matching circuit M1 is in a first preset state, the antenna assembly 10 supports the first frequency band for satellite communication; when the first matching circuit is in a second preset state, the antenna assembly 10 supports the preset frequency band for cellular communication. In other embodiments, the first matching circuit M1 may not be used to switch between the first frequency band and the preset frequency band for cellular communication, but instead performs impedance matching when the antenna assembly 10 supports the first frequency band for satellite communication. For example, the first matching circuit M1 may also include an impedance matching circuit used to match the output impedance of the first feed S1 with the input impedance of the first radiator 110. Alternatively, in other embodiments, the first matching circuit M1 is used to adjust the resonant frequency point of the antenna assembly 10 supporting the first frequency band.

[0133] In one embodiment, the third matching circuit M2 can adjust the current distribution on the second radiator 120 according to preset control parameters, thereby reducing or even avoiding the impact of the antenna assembly 10 on other devices when operating in the first frequency band (e.g., burning out other feed sources). For example, when the third matching circuit M2 is in a third preset state, the current distribution on the second radiator 120 is a first distribution pattern; when the third matching circuit M2 is in a fourth preset state, the current distribution on the second radiator 120 is a second distribution pattern, wherein the second distribution pattern is different from the first distribution pattern. It should be noted that different current distributions on the second radiator 120 include different locations of current distribution, or the same location of current distribution on the second radiator 120 but different current magnitudes, etc. For example, when the switch in the third matching circuit M2 is short-circuited, the current on the second radiator 120 flows from the third terminal 121 to ground via the second matching circuit M3. When the switch in the third matching circuit M2 is open-circuited, the current on the second radiator 120 flows from the third terminal 121 to the fourth terminal 122 to ground. In other embodiments, the third matching circuit M2 may also perform impedance matching when the antenna assembly 10 supports the first frequency band for satellite communication. For example, the third matching circuit M2 may also include an impedance matching circuit used to match the output impedance of the first feed source S1 with the input impedance of the second radiator 120. Alternatively, in other embodiments, the third matching circuit M2 may be used to adjust the resonant frequency point at which the antenna assembly 10 supports the first frequency band.

[0134] The second matching circuit M3 can be controlled to give the first terminal 111 different states. For example, the second matching circuit M3 can be controlled to open the first terminal 111, short-circuit the first terminal 111, or electrically connect the first terminal 111 to another feed source. When the first terminal 111 is in different states, the antenna structure of the antenna assembly 10 is different, therefore, the antenna assembly 10 operates in different modes, has different radiation patterns, and different upper hemisphere proportions when operating in the first frequency band. In one embodiment, the second matching circuit M3 has a switch 132, when the switch 132 is open, the first terminal 111 is open; when the switch 132 is short-circuited, the first terminal 111 is short-circuited. The specific structural form of the second matching circuit M3 is not limited to this, as long as the second matching circuit M3 is controlled to give the first terminal 111 different states. The cases where the first terminal 111 is in different states will be described in detail later.

[0135] When the first terminal 111 is open, the equivalent circuit can be found in [reference needed]. Figure 29When the first terminal 111 is open, the first terminal 111 is equivalent to a free terminal.

[0136] Please see Figure 30 The current corresponding to the quarter-wavelength mode from the first grounding point G1 to the second terminal 112 is denoted as current I. 11 The current at the third terminal 121 and the fourth terminal 122 is labeled as current I. 12 The current from the first terminal 111 to the first grounding point G1 is denoted as current I. 13 Therefore, it can be seen that the current I 12 The direction of flow and the current I 11 The current I flows in the same direction. 13 The direction of flow and the current I 11 The current flows in the same direction. As can be seen from the previous introduction about the balanced mode and the radiating mode, in this embodiment, when the antenna assembly 10 is operating in the first frequency band and in the first state: the current from the first ground point G1 to the second terminal 112 and the current from the third terminal 121 to the fourth terminal 122 are the currents corresponding to the radiating mode of EE; while the currents from the first terminal 111 to the first ground point G1 and from the first ground point G1 to the second terminal 112 are the currents corresponding to the balanced mode of T. Therefore, when the antenna assembly 10 is operating in the first frequency band and in the first state, the antenna assembly 10 has a first mode, wherein the first mode includes the EE radiating mode and the balanced mode of T. Since the current corresponding to the balanced mode of T is distributed throughout the entire first radiator 110, in other words, when the antenna assembly 10 is operating in the first frequency band and in the first state, the antenna assembly 10 has a first mode, wherein the first mode includes the EE radiating mode and the half-wavelength same-direction current mode accompanying the entire branch of the first radiator 110. The half-wavelength mode of the entire branch of the first radiator 110 is also called the half-wavelength mode of the first radiator 110, as described above (see...). Figure 3 As can be seen, the current corresponding to the half-wavelength mode is mainly concentrated on the first radiator 110, while the current on the ground pole (also known as the floor) is smaller and the main radiation direction is upward. The existence of this mode will greatly enhance the upward radiation, thus having good radiation pattern directivity and a higher upper hemisphere proportion.

[0137] It should be noted that in the schematic diagrams of this embodiment, all instances involving current flow are illustrated using the current flow direction of the antenna assembly 10 within the current half-wavelength period as an example. Understandably, in the next half-wavelength period, the current flow direction on the first radiator 110 will reverse, and the current flow direction on the second radiator 120 will also reverse. For example, in the current half-wavelength period, the current flow direction of the first radiator 110 and the second radiator 120 is from the first end 111 to the first connection point P1, from the first connection point P1 to the second end 112, and from the third end 121 to the fourth end 122. In the next half-wavelength period, the current flow direction of the first radiator 110 and the second radiator 120 is from the fourth end 122 to the third end 121, from the second end 112 to the first connection point P1, and from the first connection point P1 to the first end 111. The current flow directions illustrated in this embodiment should not be construed as a limitation on the antenna assembly 10 provided in this application.

[0138] In summary, the antenna assembly 10 provided in this application embodiment allows the second matching circuit M3 to be controlled so that the first terminal 111 has different states. When the first terminal 111 is open, the antenna assembly 10 operates in the first frequency band, and the antenna assembly 10 has a first mode. The first mode includes a quarter-wavelength mode from the first ground point G1 to the second terminal 112, and a current in the same direction as the current from the first ground point G1 to the second terminal 112 is formed at the third terminal 121 and the fourth terminal 122, and a current in the same direction as the current from the first ground point G1 to the second terminal 112 is formed at the first terminal 111 to the first ground point G1. Therefore, a current corresponding to the half-wavelength pattern from the first end 111 to the second end 112 is formed on the first radiator 110. This half-wavelength pattern current is mainly concentrated on the first radiator 110, while the current at the ground pole is smaller. Therefore, when the antenna assembly 10 supports the first frequency band, its main radiation direction is upward, exhibiting good directivity and a high upper hemisphere proportion. Thus, the antenna assembly 10 provided in this embodiment has good communication performance when communicating with a satellite using the first frequency band.

[0139] Please refer to the following: Figure 31 and Figure 32 , Figure 31 for Figure 29 A schematic diagram of the current distribution in the second mode of the antenna assembly; Figure 32 for Figure 29A schematic diagram of the current distribution in the third mode of the antenna assembly is shown. The first radiator 110 also has a second ground point G2, which is located between the first ground point G1 and the first connection point P1, and the second ground point G2 is grounded. When the second matching circuit M3 is configured to make the antenna assembly 10 in the first state: the antenna assembly 10 also has a second mode and a third mode. The second mode includes a quarter-wavelength mode from the first ground point G1 to the second end 112, and a current in the same direction as the current from the first ground point G1 to the second end 112 is formed at the third end 121 and the fourth end 122, and a reverse current is formed at the second ground point G2 to the first end 111, which is opposite to the current from the first ground point G1 to the second end 112. The third mode includes a quarter-wavelength mode from the first ground point G1 to the second end 112, and a reverse current is formed at the third end 121 and the fourth end 122, which is opposite to the current from the first ground point G1 to the second end 112.

[0140] Please see Figure 31 The current corresponding to the quarter-wavelength mode from the first grounding point G1 to the second terminal 112 is denoted as current I. 11 The current at the third terminal 121 and the fourth terminal 122 is labeled as current I. 12 The current from the second grounding point G2 to the first terminal 111 is marked as current I. 14 Therefore, it can be seen that the current I 12 The direction of flow and the current I 11 The current I flows in the same direction. 14 The direction of flow and the current I 11 The current flows in the opposite direction. As can be seen from the previous introduction about the balanced mode and the radiating mode, in this embodiment, when the antenna assembly 10 is operating in the first frequency band and in the first state: in the second mode, the current from the first ground point G1 to the second terminal 112 corresponds to the radiating mode with the current of EE at the third terminal 121 and the fourth terminal 122. In other words, the second mode includes the radiating mode from the first ground point G1 to the fourth terminal 122, and the reverse current mode of a quarter wavelength from the second ground point G2 to the first terminal 111.

[0141] Please see Figure 32 The current corresponding to the quarter-wavelength mode from the first grounding point G1 to the second terminal 112 is denoted as current I. 11 The current from the fourth terminal 122 to the third terminal 121 is labeled as current I. 15 , where current I 15 With current I11 The flow direction is opposite. As can be seen from the previous introduction about balanced mode and radiating mode, in this embodiment, when the antenna assembly 10 is operating in the first frequency band and in the first state: in the third mode, the current from the first ground point G1 to the second terminal 112 and the current from the fourth terminal 122 to the third terminal 121 are the currents corresponding to the balanced mode of EE. In other words, the third mode includes the EE balanced mode from the first ground point G1 to the fourth terminal 122.

[0142] Therefore, when the antenna assembly 10 is in the first state with the first terminal 111 open, the antenna assembly 10 not only has a first mode, but also a second mode and a third mode to support the first frequency band. Thus, when the antenna assembly 10 is in the first state, the antenna assembly 10 can use more modes to support the first frequency band, so that the antenna assembly 10 has a better communication effect in the first frequency band.

[0143] The antenna assembly 10 provided in the above embodiments of this application will be simulated and described next.

[0144] Please see Figure 33 , Figure 33 for Figure 29 The diagram shows the S-parameters of the antenna assembly. In this diagram, the horizontal axis represents frequency in GHz, and the vertical axis represents dB. Curve ① is the S1,1 curve of the antenna assembly 10; curve ② is the system radiation efficiency curve of the antenna assembly 10; and curve ③ is the system total efficiency curve of the antenna assembly 10. As can be seen from this diagram, the antenna assembly 10 supports a first frequency band of 2.0 GHz to 2.2 GHz and exhibits good system radiation efficiency and system total efficiency.

[0145] Please refer to the following: Figure 34 and Figure 35 , Figure 34 for Figure 29 The antenna assembly shown supports the radiation pattern of the first frequency band; Figure 35 for Figure 29 The diagram shows the upper hemisphere octane percentage when the antenna assembly supports the first frequency band. Figure 34 As shown in the simulation diagram, when the antenna assembly 10 is in the first state where the first end 111 is open and supports the first frequency band, the radiation pattern points upwards, and the upper hemisphere accounts for a higher proportion. Figure 35In the diagram, the horizontal axis represents frequency in GHz; the vertical axis represents energy value. Point 1's vertical axis value indicates the energy radiated upwards when the antenna assembly 10 supports the first frequency band; point 2's vertical axis value indicates the total energy radiated outwards when the antenna assembly 10 supports the first frequency band. Therefore, dividing the vertical axis value of point 1 by the vertical axis value of point 2 represents the upper hemisphere proportion when the antenna assembly 10 supports the first frequency band. Figure 35 As can be seen, the upper hemisphere occupancy of the antenna assembly 10 reaches 65% when supporting the fourth preset frequency band.

[0146] Please see Figure 36 and Figure 37 , Figure 36 A schematic diagram of the structure of an antenna assembly provided in another embodiment of this application; Figure 37 for Figure 36 The diagram shows a partial structural schematic of the antenna assembly. The antenna assembly 10 also includes a second feed source S2. The second matching circuit M3 includes a matching branch 131 and a switch 132. The switch 132 has a first connection terminal 1321 and a second connection terminal 1322. The second feed source S2 is electrically connected to the matching branch 131 to the first connection terminal 1321, and the second connection terminal 1322 is electrically connected to the first connection point P1. When there is an open circuit between the first connection terminal 1321 and the second connection terminal 1322, the antenna assembly 10 is in the first state.

[0147] When the first connection terminal 1321 and the second connection terminal 1322 are open-circuited, the first connection terminal 1321 and the second connection terminal 1322 are electrically disconnected. Therefore, the second feed S2 is electrically disconnected from the first connection point P1. At this time, the first end 111 of the first radiator 110 is open-circuited, and the antenna assembly 10 is in the first state where the first end 111 is open-circuited. When the first connection terminal 1321 and the second connection terminal 1322 are electrically connected, the second feed S2 is electrically connected to the first connection point P1.

[0148] The second matching circuit M3 in this embodiment has a simple and easy-to-implement structure.

[0149] Furthermore, when the first connection terminal 1321 and the second connection terminal 1322 are open-circuited, the antenna assembly 10 is in the first state. When the antenna assembly 10 operates in the first frequency band for satellite communication, the power and energy of the first excitation signal fed by the first feed source S1 are relatively high. At this time, with the first connection terminal 1321 and the second connection terminal 1322 open-circuited, the second feed source S2 is electrically disconnected from the first connection point P1. Therefore, the first excitation signal fed by the first feed source S1 cannot be injected into the second feed source S2 through the first connection point P1 of the first radiator 110. If the first excitation signal fed by the first feed source S1 were to be injected into the second feed source S2, there is a risk of damaging the second feed source S2. The antenna assembly 10 provided in this application embodiment has a second feed S2 electrically connected to the matching branch 131 to the first connection terminal 1321, and the second connection terminal 1322 electrically connected to the first connection point P1. When the first connection terminal 1321 and the second connection terminal 1322 are open-circuited, the second feed S2 is disconnected from the first connection point P1. Therefore, the first excitation signal fed into the first feed S1 cannot be injected into the second feed S2 through the first connection point P1 of the first radiator 110, thereby reducing or even avoiding the risk of the second feed S2 being damaged due to the first excitation signal being injected into the second feed S2.

[0150] Please see Figure 38 , Figure 39 , Figure 38 for Figure 28 An equivalent schematic diagram of the antenna assembly when the first end is short-circuited; Figure 39 for Figure 38 A schematic diagram of the current distribution in the fourth mode of the antenna assembly is shown. In this embodiment, the antenna assembly 10 has a second state in which the first terminal 111 is shorted. When the antenna assembly 10 operates in the first frequency band and the second matching circuit M3 is configured to put the antenna assembly 10 in the second state, the antenna assembly 10 has a fourth mode, wherein the fourth mode includes a quarter-wavelength mode from the first ground point G1 to the second terminal 112, and a current in the same direction as the current from the first ground point G1 to the second terminal 112 is formed at the third terminal 121 and the fourth terminal 122.

[0151] Please see Figure 39 The current corresponding to the quarter-wavelength mode from the first grounding point G1 to the second terminal 112 is denoted as current I. 11 The current from the fourth terminal 122 to the third terminal 121 is labeled as current I. 15 , where current I 15With current I 11 The flow direction is opposite. As can be seen from the previous introduction about balanced mode and radiating mode, in this embodiment, when the antenna assembly 10 is operating in the first frequency band and in the second state: in the fourth mode, the current from the first ground point G1 to the second terminal 112 and the current from the fourth terminal 122 to the third terminal 121 are the currents corresponding to the radiating mode of EE. In other words, the fourth mode includes the EE radiating mode from the first ground point G1 to the fourth terminal 122.

[0152] The second matching circuit M3 can be controlled to short-circuit the first terminal 111. The specific structure of the second matching circuit M3 and the short-circuit condition of the first terminal 111 will be explained later in conjunction with the specific circuit structure.

[0153] When the first terminal 111 is short-circuited, the first terminal 111 is electrically connected to the ground. The resonant current corresponding to the fourth mode mainly includes current I. 11 and current I 15 , wherein the current I 11 The current I is distributed from the first grounding point G1 to the second end 212. 15 Distributed at the third end 213 to the fourth end 214.

[0154] In this embodiment, during the current half-wavelength period, the current I 11 The current I flows from the first grounding point G1 to the second end 212. 11 The current flows from the fourth end 214 to the third end 213. Furthermore, the resonant current corresponding to the fourth mode also includes current I. 16 The current I 16 The current I is distributed from the first end 111 to the first grounding point G1. During the current half-wavelength period... 16 The current I flows from the first terminal 111 to the first grounding point G1. 16 The current intensity is relatively weak; specifically, the current I... 16 The current intensity is less than the current I 11 The current intensity, and the current I 16 The current intensity is less than the current I 15 The current intensity. Therefore, in the schematic diagram of this embodiment, the current I is... 16 Use dashed lines to indicate.

[0155] In the antenna assembly 10 provided in the embodiments of this application, when the antenna assembly 10 is operating in the first frequency band and is in the second state, the antenna assembly 10 has a fourth mode, wherein the fourth mode includes the EE radiation mode from the first ground point G1 to the fourth terminal 122. Therefore, when the antenna assembly 10 provided in the embodiments of this application is in the second state, the fourth mode of the antenna assembly 10 makes the radiation efficiency of the antenna assembly 10 supporting the first frequency band relatively high.

[0156] Please refer to the following: Figure 40 , Figure 40 for Figure 38 A schematic diagram of the current distribution in the fifth mode of the antenna assembly is shown. When the antenna assembly 10 operates in the first frequency band, and when the second matching circuit M3 is configured to put the antenna assembly 10 in the second state, the antenna assembly 10 also has a fifth mode, wherein the fifth mode includes a quarter-wavelength mode from the first ground point G1 to the second terminal 112, and a reverse current is formed at the third terminal 121 and the fourth terminal 122 in the opposite direction to the current flow from the first ground point G1 to the second terminal 112.

[0157] Please see Figure 40 The current corresponding to the quarter-wavelength mode from the first grounding point G1 to the second terminal 112 is denoted as current I. 11 The current from the fourth terminal 122 to the third terminal 121 is labeled as current I. 17 , where current I 17 With current I 11 The flow direction is opposite. As can be seen from the previous introduction about the balanced mode and the radiating mode, in this embodiment, when the antenna assembly 10 is operating in the first frequency band and in the second state: in the fifth mode, the current from the first ground point G1 to the second terminal 112 and the current from the fourth terminal 122 to the third terminal 121 are the currents corresponding to the balanced mode of EE. In other words, the fifth mode includes the EE balanced mode from the first ground point G1 to the fourth terminal 122. The balanced mode allows the antenna assembly 10 to radiate upwards when supporting the first frequency band, and has good directivity and a relatively high upper hemisphere ratio, so that the antenna assembly 10 has a better communication effect when communicating with satellites using the first frequency band.

[0158] Furthermore, the resonant current corresponding to the fifth mode also includes current I. 18 The current I 18 Distributed from the first end 111 to the first grounding point G1, and the current I 18 With current I 11 The current I flows in the same direction. 18The current intensity is relatively weak; specifically, the current I... 18 The current intensity is less than the current I 11 The current intensity, and the current I 16 The current intensity is less than the current I 17 The current intensity. Therefore, in the schematic diagram of this embodiment, the current I is... 18 Use dashed lines to indicate.

[0159] Therefore, when the antenna assembly 10 is in the second state with the first terminal 111 short-circuited, the antenna assembly 10 has not only a fourth mode but also a fifth mode to support the first frequency band. Thus, when the antenna assembly 10 is in the second state, the antenna assembly 10 can use more modes to support the first frequency band, so that the antenna assembly 10 has a better communication effect in the first frequency band.

[0160] Furthermore, the fourth mode of the antenna assembly 10 includes the radiating mode of the antenna assembly 10, which enables the antenna assembly 10 to have high radiation efficiency when supporting the first frequency band. The fifth mode of the antenna assembly 10 includes an EE balanced mode, which enables the antenna assembly 10 to radiate upwards when supporting the first frequency band, and has good directivity and a relatively high upper hemisphere ratio, thus enabling the antenna assembly 10 to have good communication performance when communicating with satellites using the first frequency band.

[0161] The performance of the antenna assembly 10 provided in the embodiments of this application will be simulated and explained below with reference to simulation diagrams.

[0162] Please see Figure 41 , Figure 41 for Figure 38 The diagram shows the S1,1 curve and efficiency of the antenna assembly in its second state. In this diagram, the horizontal axis represents frequency in GHz, and the vertical axis represents dB. Curve ① is the S1,1 curve of the antenna assembly 10; curve ② is the system radiation efficiency curve of the antenna assembly 10; and curve ③ is the system total efficiency curve of the antenna assembly 10. As can be seen from this diagram, the first frequency band supported by the antenna assembly 10 is 2.0 GHz to 2.2 GHz, and it has good system radiation efficiency and system total efficiency. It is understood that in other embodiments, the first frequency band may be other frequency bands, and the specific values ​​of the first frequency band shown in this embodiment should not be construed as limiting the antenna assembly 10 provided in this application.

[0163] Please see Figure 42 and Figure 43 , Figure 42 for Figure 38 The radiation pattern shown is when the antenna assembly is in the second state; Figure 43 for Figure 38 The diagram shows the upper hemisphere proportions of the antenna assembly in its second state. As can be seen from this radiation pattern, the antenna assembly 10 radiates upwards in this second state. Figure 43 In the diagram, the horizontal axis represents frequency in GHz; the vertical axis represents energy value. Point 1's vertical axis value indicates the energy radiated upwards when the antenna assembly 10 is in the second state and supports the first frequency band; point 2's vertical axis value indicates the total energy radiated outwards when the antenna assembly 10 supports the first frequency band. Therefore, dividing the vertical axis value of point 1 by the vertical axis value of point 2 represents the upper hemisphere proportion when the antenna assembly 10 supports the first frequency band. Figure 43 As can be seen, the upper hemisphere occupancy of the antenna assembly 10 is 56% when it is in the second state and supports the first frequency band. Therefore, the upper hemisphere occupancy of the antenna assembly 10 is relatively high when it is in the second state and supports the first frequency band.

[0164] Please see Figure 44 and Figure 45 , Figure 44 A schematic diagram of the structure of an antenna assembly provided in yet another embodiment of this application; Figure 45 for Figure 44 The diagram shows a partial structural schematic of the antenna assembly. The antenna assembly 10 also includes a second feed source S2. The second matching circuit M3 includes a matching branch 131 and a switch 132. One end of the matching branch 131 is electrically connected to the second feed source S2, and the other end of the matching branch 131 is electrically connected to the first connection point P1. The switch 132 has a first connection terminal 1321 and a second connection terminal 1322. The first connection terminal 1321 is electrically connected to the first connection point P1, and the second connection terminal 1322 is grounded. When the antenna assembly 10 is in the second state, the first connection terminal 1321 and the second connection terminal 1322 are electrically connected.

[0165] In this embodiment, when the first connection terminal 1321 is electrically connected to the second connection terminal 1322, the first terminal 111 is electrically connected to the ground electrode through the first connection point P1 and the switch 132, and the first terminal 111 is short-circuited.

[0166] Furthermore, when the first connection terminal 1321 is disconnected from the second connection terminal 1322, the second feed source S2 is electrically connected to the first connection point P1 through the matching branch 131.

[0167] The second matching circuit M3 in this embodiment has a simple and easy-to-implement structure.

[0168] Furthermore, in this embodiment, when the first connection terminal 1321 and the second connection terminal 1322 are electrically connected, the antenna assembly 10 is in the second state with the first terminal 111 short-circuited. When the antenna assembly 10 operates in the first frequency band for satellite communication, the power and energy of the first excitation signal fed into the first feed source S1 are relatively high. At this time, the first excitation signal fed into the first feed source S1 is grounded through the first connection point P1 and cannot be injected into the second feed source S2 through the first connection point P1 of the first radiator 110. If the first excitation signal fed into the first feed source S1 is injected into the second feed source S2, there is a risk of damaging the second feed source S2. The antenna assembly 10 provided in this application embodiment includes a matching branch 131 and a switch 132 in the second matching circuit M3. One end of the matching branch 131 is electrically connected to the second feed source S2, and the other end of the matching branch 131 is electrically connected to the first connection point P1. When the first connection point 1321 and the second connection point 1322 are electrically connected, the first excitation signal fed into the first feed source S1 goes to the ground through the first connection point P1 and cannot be injected into the second feed source S2 through the first connection point P1 of the first radiator 110, thereby reducing or even avoiding the risk of the second feed source S2 being damaged due to the first excitation signal being injected into the second feed source S2.

[0169] Furthermore, combined with Figure 36 The provided antenna assembly 10 and Figure 45 Any of the provided antenna assemblies 10 further comprises a third state in which the second feed S2 is electrically connected to the second matching circuit M3 to the first connection point P1 and the first terminal 111 is not short-circuited. When the antenna assembly 10 is not operating in the first frequency band and when the antenna assembly 10 is in the third state, the second feed S2 excites a portion of the first radiator 110 to support the second frequency band.

[0170] exist Figure 36 In the illustrated antenna assembly 10, when the first connection terminal 1321 of the switch 132 is electrically connected to the second connection terminal 1322, the second feed source S2 is electrically connected to the first connection point P1 through the matching branch 131 and the switch 132.

[0171] exist Figure 45In the antenna assembly 10 shown, when the first connection terminal 1321 of the switch 132 is disconnected from the geothermal connection terminal, the second feed source S2 is electrically connected to the first connection point P1 through the matching branch 131.

[0172] When the antenna assembly 10 is not operating in the first frequency band, the second feed source S2 excites a portion of the first radiator 110 to support the second frequency band, enabling the antenna assembly 10 to support frequency bands other than the first frequency band. The antenna assembly 10 can operate using the second frequency band and has better communication performance.

[0173] Please see Figure 46 , Figure 46 This is a schematic diagram of the current mode when the antenna assembly 10 supports the second frequency band according to one embodiment of this application. Further, when the antenna assembly 10 supports the second frequency band, the quarter-wavelength mode from the second ground point G2 to the first end 111 of the first radiator 110 supports the second frequency band.

[0174] The quarter-wavelength mode, also known as the fundamental mode, has high radiation efficiency when the quarter-wavelength mode from the second ground point G2 to the first end 111 of the first radiator 110 supports the second frequency band.

[0175] It should be noted that the "wavelength" in "quarter-wavelength mode" in "the quarter-wavelength mode from the second grounding point G2 of the first radiator 110 to the first end 111 supports the second frequency band" refers to the wavelength corresponding to the center frequency point of the second frequency band.

[0176] Furthermore, in one embodiment, the frequency range of the first frequency band is 2.0 GHz to 2.2 GHz; the second frequency band is the Global Positioning System (GPS) L1 band (1.575 GHz).

[0177] In this embodiment, the frequency of the first frequency band is a frequency band that supports satellite communication, which is 2.0 GHz to 2.2 GHz. That is, the frequency of the first frequency band is greater than or equal to 2.0 GHz and less than or equal to 2.2 GHz. The antenna assembly 10 provided in this embodiment can support the frequency band of 2.0 GHz to 2.2 GHz and the GPS L1 frequency band, thus meeting the communication requirements of the antenna assembly 10 in a specific frequency band.

[0178] Please see Figure 47 , Figure 47 for Figure 46The diagram shows the S2,2 curve and efficiency schematic of the antenna assembly supporting the second frequency band. In this schematic, the horizontal axis represents frequency in GHz, and the vertical axis represents dB. Curve ① is the S2,2 curve of the antenna assembly 10; curve ② is the system radiation efficiency curve of the antenna assembly 10; and curve ③ is the system total efficiency curve of the antenna assembly 10. As can be seen from this schematic, the resonant frequency of the second frequency band supported by the antenna assembly 10 is 1.575 GHz, the second frequency band is the GPS L1 band, and the antenna assembly 10 has good system radiation efficiency and system total efficiency in the second frequency band.

[0179] Therefore, when the antenna assembly 10 operates in the first frequency band for communicating with the satellite (i.e., when the antenna assembly 10 operates as a satellite antenna), whether the antenna assembly 10 is in the first state of being open at the first end 111 to increase the upper hemisphere ratio of the first frequency band, or the antenna assembly 10 is in the second state of being short-circuited at the first end 111 to increase the upper hemisphere ratio of the first frequency band, it does not affect the operation of the second feed source S2.

[0180] Please see Figure 48 , Figure 48 for Figure 46 The diagram shows the upper hemisphere occupancy when the antenna assembly supports the second frequency band. In this diagram, the horizontal axis represents frequency in GHz; the vertical axis represents energy value. Point 1's vertical axis value represents the energy radiated upwards when the antenna assembly 10 supports the second frequency band; point 2's vertical axis value represents the total energy radiated outwards when the antenna assembly 10 supports the second frequency band. Therefore, dividing the vertical axis value of point 1 by the vertical axis value of point 2 represents the upper hemisphere occupancy when the antenna assembly 10 supports the second frequency band. Figure 48 As can be seen, the upper hemisphere occupies 50.2% when the antenna assembly 10 supports the second frequency band.

[0181] Please see Figure 49 , Figure 49 This table compares the upper hemisphere proportions of three antenna components. The first type of antenna component, 10, represents... Figure 22 The antenna assembly 10 shown is, in Figure 22 Compared to the first radiator 110 in the antenna assembly 10 provided in various embodiments of this application, the antenna assembly 10 shown herein... Figure 22The antenna assembly 10 provided in the first application embodiment does not have the branch from the first end 111 to the grounding point as in the first radiator 110 provided in this application embodiment; that is, the first antenna has no left-side branch, and is marked as having no left-side branch in the table. The upper hemisphere occupancy of the first antenna assembly 10 is 54.3%. The second antenna assembly 10 is the antenna assembly 10 provided in this application embodiment, and the antenna assembly 10 is in the second state with the first end 111 short-circuited. At this time, the upper hemisphere occupancy of the first frequency band supported by the antenna assembly 10 for satellite communication is 56%, and is marked as short-circuited in the table for easy understanding. The third antenna assembly 10 is the antenna assembly 10 provided in this application embodiment, and the antenna assembly 10 is in the first state with the first end 111 open-circuited. At this time, the upper hemisphere occupancy of the first frequency band supported by the antenna assembly 10 for satellite communication is 65%, and is marked as open-circuited in the table for easy understanding.

[0182] Therefore, it can be seen that when the antenna assembly 10 provided in this embodiment is in the first state with the first terminal 111 open, the upper hemisphere ratio of the antenna assembly 10 supporting the first frequency band for satellite communication is relatively high. Furthermore, when the antenna assembly 10 provided in this embodiment is in the second state with the first terminal 111 short-circuited, although the upper hemisphere ratio of the antenna assembly 10 supporting the first frequency band for satellite communication is not as high as that in the first state with the first terminal 111 open, the upper hemisphere ratio of the antenna assembly 10 supporting the first frequency band for satellite communication in the second state with the first terminal 111 short-circuited is still higher than the upper hemisphere ratio of the antenna assembly 10 in the first case shown in the table.

[0183] Please see Figure 50 , Figure 50 This is a schematic diagram comparing the radiation patterns and currents of three antenna components. Figure 50 In the image, the two images in the top row are labeled (a), the two images in the middle row are labeled (b), and the two images in the bottom row are labeled (c). Figure 50 (a) represents the first type of antenna assembly 10. Figure 22 The antenna assembly 10 shown is, in Figure 22 Compared to the first radiator 110 in the antenna assembly 10 provided in various embodiments of this application, the antenna assembly 10 shown herein... Figure 22 The antenna assembly 10 provided in this application does not have the branch between the first end 111 and the grounding point in the first radiator 110 provided in the embodiments of this application, that is, the first antenna has no left-side branch. Figure 50(b) is the second type of antenna assembly 10, which is the antenna assembly 10 provided in the embodiments of this application, and the antenna assembly 10 is in the second state where the first terminal 111 is short-circuited. Figure 50 (c) represents the third type of antenna assembly 10, which is the antenna assembly 10 provided in the embodiments of this application, and the antenna assembly 10 is in the first state where the first terminal 111 is open. Figure 50 As can be seen in (a), (b), and (c), from (a) to (b) and then to (c), the current in the horizontal segment gradually increases, while the half-wavelength current in the intermediate stub (first radiator 110) causes the upward portion of the radiation pattern to gradually increase, and the downward radiation generated by the main stub IFA (i.e., the first radiator 110) gradually weakens. Figure 50 The directions in (a), (b), and (c) are enclosed by the lower left rectangle and the lower left ellipse in the diagram. Therefore, it can be seen that... Figure 50 From (a) to (b) and then to (c), the radiation in the upper half of the radiation pattern is increased, while the downward radiation is reduced, thus increasing the proportion of the upper hemisphere.

[0184] Please refer to the accompanying drawings of the embodiments described above, for example, Figure 36 , Figure 44 In one embodiment, the antenna assembly 10 further includes a second feed source S2. The second feed source S2 is electrically connected to the second matching circuit M3 to the first connection point P1. The first radiator 110 also has one or more second grounding points G2 spaced apart, the second grounding points G2 being grounded, and the second grounding points G2 being farther away from the feed point P2 than the first grounding point G1.

[0185] In the relevant schematic diagram, the first radiator 110 is illustrated with an example of having a second grounding point G2. This should not be construed as a limitation on the antenna assembly 10 provided in this application. In other embodiments, the first radiator 110 also has a plurality of second grounding points G2 spaced apart. Each of the plurality of second grounding points G2 is further away from the feed point P2 than the first grounding point G1. This application does not limit the spacing between the plurality of second grounding points G2.

[0186] In this embodiment, the second grounding point G2 can improve the isolation between the first feed S1 and the second feed S2. It is understood that improving the isolation between the first feed S1 and the second feed S2 and improving the directivity and upper hemisphere ratio of the antenna assembly 10 supporting the first frequency band are two dimensions of parameters of the antenna assembly 10. Improving the isolation between the first feed S1 and the second feed S2 does not affect improving the directivity and upper hemisphere ratio of the antenna assembly 10 supporting the first frequency band. In other words, improving the isolation between the first feed S1 and the second feed S2 does not conflict with improving the directivity and upper hemisphere ratio of the antenna assembly 10 supporting the first frequency band.

[0187] Please see Figure 51 , Figure 51 This is a schematic diagram of an antenna assembly provided in another embodiment of this application. The first radiator 110 further has a second grounding point G2, which is grounded and is further away from the feed point P2 than the first grounding point G1. The antenna assembly 10 also includes a grounding rib 130. The grounding rib 130 is electrically connected to the portion of the first radiator 110 located between the first grounding point G1 and the second grounding point G2, and the grounding rib 130 is grounded. The length d1 of the grounding rib 130 satisfies: 0 < d1 ≤ d2, where d2 is the distance between the first grounding point G1 and the second grounding point G2.

[0188] The so-called grounding rib 130 refers to a grounding part or grounding component with a certain length. The antenna assembly 10 includes the grounding rib 130, which is electrically connected to the portion of the first radiator 110 located between the first grounding point G1 and the second grounding point G2. Since the grounding rib 130 is grounded, the number of grounding points between the first feed S1 and the second feed S2 in the first radiator 110 is further increased, thereby further improving the isolation between the first feed S1 and the second feed S2.

[0189] Please refer to the following: Figure 28 and Figure 52 , Figure 52 for Figure 28A schematic diagram of the provided antenna assembly from another angle. The first radiator 110 extends along a first direction D1. The second radiator 120 includes a first radiating portion 120b and a second radiating portion 120c. The first radiating portion 120b has the third end 121 and extends along the first direction D1. The second radiating portion 120c is bent and connected to the first radiating portion 120b, and has the fourth end 122. The second radiating portion 120c extends along a second direction D2.

[0190] In one embodiment, the first direction D1 is the extension direction of the short side of the electronic device 1 on which the antenna assembly 10 is applied, and the second direction D2 is the extension direction of the long side of the electronic device 1 on which the antenna assembly 10 is applied. The above-described structure of the first radiator 110 and the second radiator 120 is simple and easy to implement.

[0191] It is understood that in the antenna assembly 10 provided in the above embodiments, the second radiator 120 is illustrated as being located to the right of the first radiator 110. It is understood that in other embodiments, the second radiator 120 may be located to the left of the first radiator 110. The antenna assembly 10 shown in the embodiments of this application can be mirrored left and right to obtain the antenna assembly 10 provided in a new embodiment.

[0192] Please see Figure 53 and Figure 54 , Figure 53 A schematic diagram of an electronic device provided according to one embodiment of this application; Figure 54 for Figure 53 The diagram shows a partial structural schematic of the electronic device. This application also provides an electronic device 1. The electronic device 1 includes, but is not limited to, devices capable of transmitting and receiving electromagnetic wave signals, such as mobile phones, telephones, televisions, tablets, cameras, personal computers, laptops (PCs), in-vehicle devices, headphones, watches, wearable devices, base stations, vehicle radars, and customer pre-installation equipment (CPE). In this application, a mobile phone is used as an example of the electronic device 1; other devices can be referred to the specific descriptions in this application. The electronic device 1 may include an antenna assembly 10 as described in any of the preceding embodiments. The antenna assembly 10 is described in the preceding description and will not be repeated here.

[0193] In summary, the electronic device 1 provided in this application includes an antenna assembly 10. When the antenna assembly 10 operates in the first frequency band supporting satellite communication, the second matching circuit M3 is configured to place the antenna assembly 10 in the first state. When the antenna assembly 10 operates in a frequency band other than the first frequency band, the second matching circuit M3 is configured to place the antenna assembly 10 in the second state. The antenna assembly 10 has a higher upper hemisphere coverage in the radiation pattern when in the first state than when in the second state. Therefore, when the antenna assembly 10 operates in the first frequency band of satellite communication, it has a higher upper hemisphere coverage in the radiation pattern. When the antenna assembly 10 in the electronic device 1 communicates with a satellite using the first frequency band, it has better communication performance.

[0194] Furthermore, the electronic device 1 has a top 1a and a bottom 1b disposed opposite to each other, and the first radiator 110 and the second radiator 120 are disposed on the top 1a of the electronic device 1.

[0195] The term "top 1a" of electronic device 1 generally refers to the portion located at the top when electronic device 1 is in use. Typically, the top 1a of electronic device 1 occupies one-third or less of the entire electronic device 1. Correspondingly, the term "bottom 1b" of electronic device 1 generally refers to the portion located at the bottom when electronic device 1 is in use. Typically, the bottom 1b of electronic device 1 occupies one-third or less of the entire electronic device 1.

[0196] Since the satellite is located in the sky, that is, above the electronic device 1, in the electronic device 1 provided in this application embodiment, the first radiator 110 and the second radiator 120 are disposed on the top 1a of the electronic device 1. Therefore, when the antenna assembly 10 operates in the first frequency band for communication with the satellite, the communication effect is better.

[0197] The electronic device 1 has a top edge 11a and a side edge 11b that is bent and connected to the top edge 11a. The top edge 11a is located at the top 1a, and the side edge 11b has a predetermined segment 11c located at the top 1a. A first radiator 110 is disposed at the top edge 11a, a portion of a second radiator 120 is disposed at the top edge 11a, and the remaining portion of the second radiating portion 120c is located at the predetermined segment 11c of the side edge 11b.

[0198] In this embodiment, the length of the top edge 11a is less than the length of the side edge 11b, that is, the top edge 11a is the short side of the electronic device 1, and the side edge 11b is the long side of the electronic device 1. It should be understood that this should not be construed as a limitation on the antenna assembly 10 provided in this application embodiment.

[0199] Since the satellite is located in the sky, that is, above the electronic device 1, in the electronic device 1 provided in this application embodiment, the top edge 11a is located at the top 1a, and the side edge 11b has a preset segment 11c located at the top 1a. The first radiator 110 is disposed at the top edge 11a, a portion of the second radiator 120 is disposed at the top edge 11a, and the remaining portion of the second radiating portion 120c is located at the preset segment 11c of the side edge 11b. Therefore, when the antenna assembly 10 operates in the first frequency band for communication with the satellite, the communication effect is better.

[0200] Please see Figure 54 In one embodiment, the middle frame 30 includes a frame body 310 and a border 320. The border 320 surrounds the periphery of the frame body 310. The first radiator 110 and the second radiator 120 are formed on the border.

[0201] The middle frame 30 is typically conductive, for example, made of a metal (such as aluminum or an aluminum-magnesium alloy). In the electronic device 1, the middle frame 30 is typically used to support the display screen 70 and the battery cover. Because the middle frame 30 is conductive, it can also serve as a ground electrode. Components in the electronic device 1 can be directly or indirectly connected to the middle frame 30 for grounding.

[0202] Specifically, in this embodiment, the frame 320 has an outer surface 320a facing away from the frame body 310. A first gap 320b exists between the frame body 310 and a portion of the frame 320. The frame 320 has a second gap 320c (i.e., the coupling gap 120a) located on the outer surface 320a and communicating with the first gap 320b, and a third gap 320d communicating with the first gap 320b. The third gap 320d is spaced apart from the second gap 320c, and the first gap 320b, the second gap 320c, and the third gap 320d together define the first radiator 110. The first gap 320b and the second gap 320c together define the second radiator 120. Thus, the portion of the frame 320 is formed as the first radiator 110 and the second radiator 120.

[0203] In this embodiment, the frame body 310 can serve as a ground electrode. The first grounding point G1 of the first radiator 110 is electrically connected to the frame body 310 for grounding, and the fourth terminal 122 of the second radiator 120 is electrically connected to the frame body for grounding.

[0204] Compared to a structure where at least one of the first radiator 110 and the second radiator 120 is independent of the middle frame 30, in this embodiment, a portion of the frame 320 of the middle frame 30 of the electronic device 1 is reused as the first radiator 110 and the second radiator 120, which makes the electronic device 1 smaller in size and easier to assemble.

[0205] In other embodiments, the electronic device 1 further includes a display screen 70, a mid-frame 30, and a housing 90 (also referred to as a battery cover). The display screen 70 and the housing 90 are respectively disposed on opposite sides of the mid-frame 30.

[0206] Furthermore, in one embodiment, the mid-frame 30, the housing 90, and at least one of the display screen 70 form a receiving space. The electronic device 1 also includes a battery and functional devices (which may include one or more of a camera module, microphone, receiver, speaker, face recognition module, and fingerprint recognition module) disposed within the receiving space, capable of realizing the basic functions of a mobile phone; these will not be described in detail in this embodiment. It is understood that the above description of the electronic device 1 is merely an illustration of one environment in which the antenna assembly 10 is applied, and the specific structure of the electronic device 1 should not be construed as a limitation on the antenna assembly 10 provided in this application. In other embodiments, the electronic device 1 may also not include at least one of the display screen 70 and the housing 90.

[0207] Please see Figure 55 , Figure 55 This is a circuit block diagram of an electronic device provided according to one embodiment of the present application. The electronic device 1 further includes a processor 50, which is electrically connected to the second matching circuit M3 and is used to configure the state of the second matching circuit M3.

[0208] In the schematic diagram of this embodiment, the electronic device 1 further includes a processor 50 integrated into the antenna assembly 10 provided in the preceding embodiment. It should be understood that the specific structure of the antenna assembly 10 shown in this schematic diagram, especially the specific structure of the second matching circuit M3, should not be construed as a limitation on the electronic device 1 provided in this application. The electronic device 1 also includes a processor 50 that can be integrated into the antenna assembly 10 provided in other embodiments described above.

[0209] The second matching circuit M3 can be configured by the processor 50 to have different states, which can cause the first terminal 111 to have different states. For example, the second matching circuit M3 can be configured to open the first terminal 111, short-circuit the first terminal 111, or electrically connect the first terminal 111 to another feed source. When the first terminal 111 is in different states, the antenna structure of the antenna assembly 10 is different. Therefore, the antenna assembly 10 operates in different modes, has different radiation patterns, and different upper hemisphere proportions when operating in the first frequency band. The processor 50 can configure the second matching circuit M3 such that when the antenna assembly 10 operates in the first frequency band supporting satellite communication, the second matching circuit M3 is configured to put the antenna assembly 10 in the first state, and when the antenna assembly 10 operates in a frequency band other than the first frequency band, the second matching circuit M3 is configured to put the antenna assembly 10 in the second state. The antenna assembly 10 has a higher upper hemisphere proportion in the radiation pattern when it is in the first state than when it is in the second state. Therefore, when the antenna assembly 10 operates in the first frequency band of satellite communication, it has a high upper hemisphere octane ratio in the radiation pattern. When the antenna assembly 10 in the electronic device 1 communicates with the satellite using the first frequency band, it has good communication performance.

[0210] The above description represents some embodiments of this application. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this application, and these improvements and modifications are also considered to be within the scope of protection of this application.

Claims

1. An antenna assembly, characterized in that, The antenna assembly includes: The first radiator includes a first end, a first connection point, a first grounding point, a power supply point, and a second end. The first grounding point is located between the first end and the second end. The first connection point is located between the first end and the first grounding point. The power supply point is located between the second end and the first grounding point. The first grounding point is grounded. First matching circuit; The first feed source is electrically connected to the first matching circuit to the feed point and is used to feed the first radiator with an excitation signal of a first frequency band supporting satellite communication. A second radiator includes a third end and a fourth end, wherein the third end is opposite to and spaced apart from the second end to form a coupling gap, and the fourth end is grounded; and A second matching circuit is electrically connected to the first connection point, and the second matching circuit can be configured to cause the antenna assembly to have a first state of open circuit at the first end or a second state of short circuit at the first end. When the antenna assembly operates in the first frequency band supporting satellite communication, the second matching circuit is configured to put the antenna assembly in the first state, and when the antenna assembly operates in a frequency band other than the first frequency band, the second matching circuit is configured to put the antenna assembly in the second state, wherein the antenna assembly has a higher upper hemisphere octave in the radiation pattern when it is in the first state than when it is in the second state.

2. The antenna assembly as claimed in claim 1, characterized in that, When the second matching circuit is configured to put the antenna assembly in the first state, the mode of the antenna assembly includes a quarter-wavelength mode from the second end to the first end, accompanied by a reverse current from the third end to the fourth end, and a unidirectional current from the first ground point to the first end.

3. The antenna assembly as described in claim 1, characterized in that, When the second matching circuit is configured to put the antenna assembly in the second state, the antenna assembly is in a mode including a quarter-wavelength mode from the second end to the first ground point, and a reverse current is generated between the third end and the fourth end, which is opposite to the current flow between the second end and the first ground point.

4. The antenna assembly as claimed in claim 1, characterized in that, When the second matching circuit is configured to place the antenna assembly in the first state, the antenna assembly has a first mode, the first mode including a quarter-wavelength mode from the first ground point to the second end, and forming a current in the same direction as the current from the first ground point to the second end at the third end and the fourth end, and forming a current in the same direction as the current from the first ground point to the first ground point at the first end.

5. The antenna assembly as claimed in claim 1, characterized in that, The first radiator also has a second grounding point located between the first grounding point and the first connection point, and the second grounding point is grounded. When the second matching circuit is configured to put the antenna assembly in the first state, the antenna assembly also has a second mode and a third mode. The second mode includes a quarter-wavelength mode from the first ground point to the second end, and forms a current in the same direction as the current from the first ground point to the second end at the third end and the fourth end, and forms a reverse current from the second ground point to the first end that is opposite to the current from the first ground point to the second end. The third mode includes a quarter-wavelength mode from the first ground point to the second end, and a reverse current is formed at the third end and the fourth end, which is opposite to the current flow from the first ground point to the second end.

6. The antenna assembly as claimed in claim 1, characterized in that, The antenna assembly also includes: Second feed source; The second matching circuit includes a matching branch and a switch. The switch has a first connection terminal and a second connection terminal. The second feed is electrically connected to the matching branch to the first connection terminal, and the second connection terminal is electrically connected to the first connection point. When there is an open circuit between the first connection terminal and the second connection terminal, the antenna assembly is in the first state.

7. The antenna assembly as claimed in claim 1, characterized in that, When the antenna assembly operates in the first frequency band and the second matching circuit is configured to cause the antenna assembly to be in and in the second state, the antenna assembly has a fourth mode; The fourth mode includes a quarter-wavelength mode from the first ground point to the second end, and a current in the same direction as the current from the first ground point to the second end is formed at the third end and the fourth end.

8. The antenna assembly as claimed in claim 4, characterized in that, When the antenna assembly operates in the first frequency band, and when the second matching circuit is configured to put the antenna assembly in a second state, the antenna assembly also has a fifth mode; The fifth mode includes a quarter-wavelength mode from the first ground point to the second end, and a reverse current is formed at the third and fourth ends, which is opposite to the current flow from the first ground point to the second end.

9. The antenna assembly as claimed in claim 7, characterized in that, The antenna assembly also includes: Second feed source; The second matching circuit includes a matching branch and a switch. One end of the matching branch is electrically connected to the second feed source, and the other end of the matching branch is electrically connected to the first connection point. The switch has a first connection terminal and a second connection terminal. The first connection terminal is electrically connected to the first connection point, and the second connection terminal is grounded. When the second matching circuit is configured to put the antenna assembly in the second state, the first connection terminal and the second connection terminal are electrically connected.

10. The antenna assembly as claimed in claim 6 or 9, characterized in that, The antenna assembly also has a third state in which the second feed is electrically connected to the second matching circuit to the first connection point and the first end is not short-circuited. When the antenna assembly is not operating in the first frequency band and when the antenna assembly is in the third state, the second feed excites a portion of the first radiator to support the second frequency band.

11. The antenna assembly as claimed in claim 10, characterized in that, The quarter-wavelength mode from the second ground point of the first radiator to the first end supports the second frequency band.

12. The antenna assembly as claimed in claim 10, characterized in that, The first frequency band has a frequency range of 2.0 GHz to 2.2 GHz; the second frequency band is the GPS L1 band.

13. The antenna assembly as claimed in claim 1, characterized in that, The second radiator also has a second connection point located at the third end and the fourth end; The antenna assembly also includes: The third matching circuit has one end grounded and the other end electrically connected to the second connection point.

14. The antenna assembly as claimed in claim 1, characterized in that, The antenna assembly also includes: The second feed source is electrically connected to the second matching circuit to the first connection point; The first radiator also has one or more second grounding points arranged at intervals, the second grounding points being grounded and being further away from the feed point than the first grounding point.

15. The antenna assembly as claimed in claim 14, characterized in that, The antenna assembly also includes: A grounding bar is electrically connected to the portion of the first radiator located between the first grounding point and the second grounding point, and the grounding bar is grounded. The length d1 of the grounding bar satisfies: 0 < d1 ≤ d2, where d2 is the distance between the first grounding point and the second grounding point.

16. The antenna assembly as claimed in claim 1, characterized in that, The first radiator extends along a first direction; the second radiator includes a first radiating portion and a second radiating portion, wherein the first radiating portion has the third end and extends along the first direction, the second radiating portion is bent and connected to the first radiating portion, the second radiating portion has the fourth end and extends along a second direction.

17. An electronic device, characterized in that, The electronic device includes an antenna assembly as described in any one of claims 1-16.

18. The electronic device as claimed in claim 17, characterized in that, The electronic device has a top and a bottom that are arranged opposite to each other, and the first radiator and the second radiator are disposed on the top of the electronic device.

19. The electronic device as claimed in claim 18, characterized in that, The electronic device has a top edge and a side edge that is bent and connected to the top edge. The top edge is located at the top, and the side edge has a preset segment located at the top. A first radiator is disposed on the top edge, a portion of a second radiator is disposed on the top edge, and another portion of the second radiator is located in the preset segment of the side edge.

20. The electronic device as claimed in claim 17, characterized in that, The electronic device further includes a processor electrically connected to the second matching circuit for configuring the state of the second matching circuit.

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