Antenna and electronic device

Abstract

The present application provides an antenna and an electronic device. The antenna comprises a radiating element, a switch assembly, and a feed source. The radiating element comprises a first end, a first connection point, a second connection point, and a second end which are arranged in sequence. An end of the switch assembly is electrically connected to the first connection point, and another end thereof is electrically connected to the second connection point. The feed source is electrically connected to the switch assembly. The antenna has a first state and a second state. When the antenna is in the first state, the feed source is electrically connected to the first connection point via the switch assembly, the second connection point is grounded, and the antenna supports a target frequency band and has a first pattern. When the antenna is in the second state, the feed source is electrically connected to the second connection point via the switch assembly, the first connection point is grounded, and an antenna assembly supports the target frequency band and has a second pattern. The first pattern is different from the second pattern. The antenna provided in the present application achieves pattern reconfigurability for a single antenna in a target frequency band, and has improved communication performance in the target frequency band.

Description

Antennas and electronic equipment

[0001] This application claims priority to the earlier application filed on November 6, 2024, entitled “Antenna and Electronic Device”, application number 2024115791536, the contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of communication technology, and in particular to an antenna and electronic device. Background Technology

[0003] With technological advancements, mobile phones and other electronic devices with communication capabilities are becoming increasingly widespread and powerful. Electronic devices typically include antennas to enable their communication functions. However, the communication performance of antennas in related electronic devices is currently insufficient and requires further improvement. Summary of the Invention

[0004] In a first aspect, embodiments of this application provide an antenna, the antenna comprising:

[0005] A radiator, comprising a first end, a first connection point, a second connection point, and a second end arranged sequentially;

[0006] A switch assembly, one end of which is electrically connected to the first connection point and the other end of which is electrically connected to the second connection point; and

[0007] A feed source, the feed source being electrically connected to the switching assembly;

[0008] The antenna has a first state and a second state. When the antenna is in the first state: the feed source is electrically connected to the first connection point via the switching assembly, the second connection point is grounded, the antenna supports the target frequency band, and has a first radiation pattern; when the antenna is in the second state: the feed source is electrically connected to the second connection point via the switching assembly, the first connection point is grounded, the antenna assembly supports the target frequency band, and has a second radiation pattern; the first radiation pattern is different from the second radiation pattern.

[0009] In a second aspect, embodiments of this application provide an electronic device, the electronic device including the antenna as described in the first aspect. Attached Figure Description

[0010] 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.

[0011] Figure 1 is a schematic diagram of an antenna provided in one embodiment of this application;

[0012] Figure 2 is an equivalent schematic diagram of the antenna shown in Figure 1 when it is in the first state;

[0013] Figure 3 is an equivalent schematic diagram of the antenna shown in Figure 1 when it is in the second state;

[0014] Figure 4 is a schematic diagram of the current distribution when the antenna provided in Figure 2 is in the first state and supports the first sub-band of the target frequency band.

[0015] Figure 5 is a schematic diagram of the current distribution when the antenna provided in Figure 2 is in the first state and supports the second sub-band of the target frequency band.

[0016] Figure 6 is a partial dimensional schematic diagram of the radiator of the antenna shown in Figure 2;

[0017] Figure 7 is a schematic diagram of the current distribution when the antenna provided in Figure 3 is in the second state and supports the first sub-band of the target frequency band.

[0018] Figure 8 is a schematic diagram of the current distribution when the antenna provided in Figure 3 is in the second state and supports the second sub-band of the target frequency band.

[0019] Figure 9 is a partial dimensional schematic diagram of the radiator of the antenna shown in Figure 3;

[0020] Figure 10 is a schematic diagram of an antenna provided in one embodiment of this application;

[0021] Figure 11 is a schematic diagram of the switch assembly shown in Figure 10;

[0022] Figure 12 is a schematic diagram of an antenna provided in another embodiment of this application;

[0023] Figure 13 is a schematic diagram of the switch assembly shown in Figure 12;

[0024] Figure 14 is a schematic diagram of the radiator structure of the antenna provided in Figure 12;

[0025] Figure 15 is a schematic diagram of the resonant current in the target frequency band when the antenna support shown in Figure 14 is in the first state;

[0026] Figure 16 shows the three-dimensional radiation patterns of the first and second sub-bands of the target frequency band when the antenna shown in Figure 12 is in the first state.

[0027] Figure 17 shows the two-dimensional radiation patterns of the first and second sub-bands of the target frequency band when the antenna shown in Figure 12 is in the first state.

[0028] Figure 18 is a schematic diagram of the resonant current in the target frequency band when the antenna shown in Figure 14 is in the second state;

[0029] Figure 19 shows the three-dimensional radiation patterns of the first and second sub-bands of the target frequency band when the antenna shown in Figure 12 is in the second state.

[0030] Figure 20 shows the two-dimensional radiation patterns of the first and second sub-bands of the target frequency band when the antenna shown in Figure 12 is in the second state.

[0031] Figure 21 is a perspective view of an electronic device provided in one embodiment;

[0032] Figure 22 is a partial structural diagram of the electronic device in Figure 21. Detailed Implementation

[0033] In a first aspect, one embodiment of this application provides an antenna, wherein the antenna includes:

[0034] A radiator, comprising a first end, a first connection point, a second connection point, and a second end arranged sequentially;

[0035] A switch assembly, one end of which is electrically connected to the first connection point and the other end of which is electrically connected to the second connection point; and

[0036] A feed source, the feed source being electrically connected to the switching assembly;

[0037] The antenna has a first state and a second state. When the antenna is in the first state: the feed source is electrically connected to the first connection point via the switching assembly, the second connection point is grounded, the antenna supports the target frequency band, and has a first radiation pattern; when the antenna is in the second state: the feed source is electrically connected to the second connection point via the switching assembly, the first connection point is grounded, the antenna assembly supports the target frequency band, and has a second radiation pattern; the first radiation pattern is different from the second radiation pattern.

[0038] When the antenna is in the first state, the quarter-wavelength mode from the second connection point to the first end supports the target frequency band.

[0039] The target frequency band includes a first sub-frequency band and a second sub-frequency band;

[0040] When the antenna is in the first state, the quarter-wavelength mode from the second connection point to the first end supports the first sub-band.

[0041] When the antenna is in the first state, the quarter-wavelength mode from the second connection point to the first end supports the second sub-band.

[0042] Wherein, the length L of the portion of the radiator located from the second connection point to the first end is... 01 Satisfying: λ1 / 4 - λ1 / 16 ≤ L 01 ≤λ1 / 4+λ1 / 16; where λ1 is the center frequency of the target frequency band.

[0043] When the antenna is in the second state, the quarter-wavelength mode from the first connection point to the second end supports the target frequency band.

[0044] The target frequency band includes a first sub-frequency band and a second sub-frequency band;

[0045] When the antenna is in the second state, the quarter-wavelength mode from the first connection point to the second end supports the first sub-band.

[0046] When the antenna is in the second state, the quarter-wavelength mode from the first connection point to the second end supports the second sub-band.

[0047] Wherein, the length L of the portion of the radiator located from the first connection point to the second end is... 02 Satisfying: λ1 / 4 - λ1 / 16 ≤ L 02 ≤λ1 / 4+λ1 / 16; where λ1 is the center frequency of the target frequency band.

[0048] The switching assembly includes:

[0049] The common terminal is electrically connected to the feed source;

[0050] A first switch, one end of which is electrically connected to the common terminal, and the other end of which is electrically connected to the first connection point;

[0051] A second switch, one end of which is electrically connected to the other end of the first switch, and the other end of which is grounded;

[0052] A third switch, one end of which is electrically connected to the common terminal, and the other end of which is electrically connected to the second connection point; and

[0053] A fourth switch, one end of which is electrically connected to the other end of the third switch, and the other end of which is grounded;

[0054] When the antenna is in the first state, the first switch is turned on, the second switch is turned off, the third switch is turned off, and the fourth switch is turned on;

[0055] When the antenna is in the second state, the first switch is off, the second switch is on, the third switch is on, and the fourth switch is off.

[0056] The antenna further includes at least one of a first tuning device and a second tuning device;

[0057] When the antenna further includes a first tuning device, the other end of the first switch is electrically connected to the first tuning device to the first connection point, and the first tuning device is used to adjust the frequency of the target frequency band;

[0058] When the antenna further includes a second tuning device, the other end of the third switch is electrically connected to the second tuning device to the second connection point.

[0059] The antenna further includes:

[0060] The third tuning device has one end electrically connected to the first connection point and the other end grounded.

[0061] The third tuning device includes an inductor, the inductance of which is in the range of 2nH to 5nH.

[0062] The switching assembly further includes:

[0063] The fifth switch, one end of which is electrically connected to the common terminal, and the other end of which is electrically connected to the first connection point;

[0064] A sixth switch, one end of which is electrically connected to the other end of the fifth switch, and the other end of which is grounded;

[0065] A seventh switch, one end of which is electrically connected to the common terminal, and the other end of which is electrically connected to the second connection point; and

[0066] An eighth switch, one end of which is electrically connected to the other end of the seventh switch, and the other end of which is grounded;

[0067] When the antenna is in the first state, the fifth switch is turned on, the sixth switch is turned off, the seventh switch is turned off, and the eighth switch is turned on;

[0068] When the antenna is in the second state, the fifth switch is off, the sixth switch is on, the seventh switch is on, and the eighth switch is off.

[0069] The antenna further includes at least one of a fourth tuning device and a fifth tuning device;

[0070] When the antenna further includes a fourth tuning device, the other end of the fifth switch is electrically connected to the fourth tuning device to the first connection point;

[0071] When the antenna further includes a fifth tuning device, the other end of the seventh switch is electrically connected to the fifth tuning device to the second connection point.

[0072] The antenna further includes:

[0073] The sixth tuning device has one end electrically connected to the second connection point and the other end grounded.

[0074] The sixth tuning device includes an inductor, the inductance of which is in the range of 2nH to 5nH.

[0075] The first sub-band includes a mid-frequency band, and the second sub-band includes a high-frequency band.

[0076] Secondly, one embodiment of this application provides an electronic device, wherein the electronic device includes an antenna as described in the first aspect or in any manner described in the first aspect.

[0077] The electronic device includes a mid-frame, which comprises a frame body and a border, and the radiator of the antenna is formed on the border.

[0078] The frame has a first gap and a second gap, and the portion of the frame located between the first gap and the second gap forms the radiator.

[0079] The border includes a first border and a second border that are bent and connected together, wherein the length of the second border is greater than the length of the first border.

[0080] The radiator includes a first radiating part and a second radiating part that are bent and connected together. The first radiating part has a first end and a first connection point, and the second radiating part has a second end and a second connection point. The first radiating part of the radiator is located on the frame, the second radiating part is located on the second frame, the first gap is located on the first frame, and the second gap is located on the second frame.

[0081] 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.

[0082] 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.

[0083] 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.

[0084] Please refer to Figures 1, 2, and 3 together. Figure 1 is a schematic diagram of an antenna provided according to an embodiment of this application; Figure 2 is an equivalent schematic diagram of the antenna shown in Figure 1 in a first state; Figure 3 is an equivalent schematic diagram of the antenna shown in Figure 1 in a second state. The antenna 10 includes a radiator 110, a switching assembly 120, and a feed S. The radiator 110 includes a first end 111, a first connection point P1, a second connection point P2, and a second end 112 arranged sequentially. One end of the switching assembly 120 is electrically connected to the first connection point P1, and the other end is electrically connected to the second connection point P2. The feed S is electrically connected to the switching assembly 120. The antenna 10 has a first state and a second state. When the antenna 10 is in the first state: the feed S is electrically connected to the first connection point P1 via the switching assembly 120, the second connection point P2 is grounded, the antenna 10 supports the target frequency band, and has a first radiation pattern. When the antenna 10 is in the second state: the feed S is electrically connected to the second connection point P2 via the switch assembly 120, the first connection point P1 is grounded, the antenna 10 assembly supports the target frequency band, and has a second radiation pattern. The first radiation pattern is different from the second radiation pattern.

[0085] The radiator 110 can be a laser direct-structuring (LDS) radiator 110, a flexible printed circuit (FPC) radiator 110, a printed direct-structuring (PDS) radiator 110, or a metal stub radiator 110. When the antenna 10 is applied to the electronic device 1, the radiator 110 can be a mechanical design antenna 10 (MDA) radiator designed using the embedded metal of the electronic device 1 itself. For example, the radiator 110 can be an antenna radiator designed using the plastic and metal mid-frame 30 of the electronic device 1. In addition, the radiator 110 can also be a metal frame antenna radiator designed with a metal mid-frame 30.

[0086] It is understood that this application does not specifically limit the shape, structure, and material of the radiator 110. The shape of the radiator 110 includes, but is not limited to, bent, straight, L-shaped, sheet-like, rod-like, coated, and thin film shapes. When the radiator 110 is strip-shaped, this application does not limit the extension trajectory of the radiator 110; therefore, the radiator 110 can extend along a straight line, curve, or multi-segment bend. The 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 radiator 110 extends along a straight trajectory. It is understood that the radiator 110 shown in the schematic diagram of this embodiment should not be construed as a limitation on the radiator 110 provided in this application embodiment.

[0087] When the antenna 10 is in the first state: the feed source S is electrically connected to the first connection point P1 via the switching assembly 120, that is, when the antenna 10 is in the first state, the first connection point P1 serves as the feed point of the radiator 110. When the antenna 10 is in the first state, the second connection point P2 is grounded, serving as the ground point of the radiator 110. Therefore, when the antenna 10 is in the first state, the radiator 110 is equivalent to an inverted F antenna (IFA) radiator with the first connection point P1 as the feed point and the second connection point P2 as the ground point. When the antenna 10 is in the first state: the feed source S is electrically connected to the radiator 110 via the first connection point P1 to excite the radiator 110 to support the target frequency band, and the radiator 110 has a first radiation pattern when supporting the target frequency band.

[0088] When the antenna 10 is in the second state: the feed source S is electrically connected to the second connection point P2 via the switching assembly 120, that is, when the antenna 10 is in the second state, the second connection point P2 serves as the feed point of the radiator 110. When the antenna 10 is in the second state, the first connection point P1 is grounded, and the first connection point P1 serves as the ground point of the radiator 110. Therefore, when the antenna 10 is in the second state, the radiator 110 is equivalent to the second ground point being the feed point, and the first connection point P1 serving as the ground point for the IFA antenna radiator. When the antenna 10 is in the second state: the feed source S is electrically connected to the radiator 110 via the second connection point P2 to excite the radiator 110 to support the target frequency band, and the radiator 110 has a second radiation pattern when supporting the target frequency band.

[0089] The first radiation pattern differs from the second radiation pattern, including but not limited to the fact that the main lobe pointing of the first radiation pattern differs from that of the second radiation pattern. The differences between the first and second radiation patterns will be explained later with reference to simulation diagrams.

[0090] In one embodiment, the target frequency band includes a mid-frequency band, a high-frequency band, a mid-to-high-frequency band, a WiFi 2.4G band, or an N78 band, etc. In this application embodiment, the example of the target frequency band including a mid-to-high-frequency band (i.e., both mid-frequency and high-frequency bands) is used for illustration; it should be understood that this should not be construed as a limitation on the antenna 10 provided in this application embodiment.

[0091] In summary, the antenna 10 provided in this application has a first state and a second state. When the antenna 10 is in the first state: the feed S is electrically connected to the first connection point P1 via the switch assembly 120, the second connection point P2 is grounded, the antenna 10 supports the target frequency band, and has a first radiation pattern; when the antenna 10 is in the second state: the feed S is electrically connected to the second connection point P2 via the switch assembly 120, the first connection point P1 is grounded, the antenna 10 assembly supports the target frequency band, and has a second radiation pattern; the first radiation pattern is different from the second radiation pattern. Therefore, the antenna 10 provided in this application can, through the first and second states of the antenna 10 assembly, have different radiation patterns when supporting the target frequency band, thereby achieving reconfigurable radiation patterns for a single antenna. Therefore, in communication scenarios where the antenna 10 is used to communicate with other devices, controlling the switch assembly 120 can select the radiation pattern when the antenna 10 supports the target frequency band, thereby improving the communication experience when the antenna 10 supports the target frequency band. Therefore, the antenna 10 provided in this embodiment of the application has good communication performance in the target frequency band. Furthermore, since the radiation pattern of the target frequency band can be reconstructed using only a single antenna, it is not necessary to use multiple antennas 10 to reconstruct the radiation pattern of the target frequency band. When the antenna 10 is applied in the electronic device 1, it facilitates its placement with other components of the electronic device 1.

[0092] Please refer to Figures 4 and 5. Figure 4 is a schematic diagram of the current distribution supporting the first sub-band of the target frequency band when the antenna provided in Figure 2 is in the first state; Figure 5 is a schematic diagram of the current distribution supporting the second sub-band of the target frequency band when the antenna provided in Figure 2 is in the first state. When the antenna 10 is in the first state, the quarter-wavelength mode from the second connection point P2 to the first end 111 supports the target frequency band.

[0093] It should be noted that the "wavelength" in the target frequency band supported by the second connection point P2 to the first end 111 refers to the wavelength corresponding to the center frequency of the target frequency band.

[0094] When the antenna 10 is in the first state, the radiator 110 is excited to generate a first target resonant current to support the target frequency band. For example, in the current half-wavelength period, the first target resonant current flows from the second connection point P2 to the first connection point P2; it can be understood that the first target resonant current is periodic, and in the next half-wavelength period, the first target resonant current flows from the first connection point P2 to the second connection point P2.

[0095] The quarter-wavelength mode, also known as the fundamental mode, operates when the antenna 10 supports the target frequency band, and the antenna 10 exhibits high radiation efficiency in the target frequency band. Therefore, when the antenna 10 is in the first state, the quarter-wavelength mode from the second connection point P2 to the first terminal 111 supports the target frequency band, and the antenna 10 exhibits high radiation efficiency in the target frequency band.

[0096] In this embodiment, the target frequency band is described as including a first sub-frequency band and a second sub-frequency band. For example, the target frequency band is a high-frequency band, the first sub-frequency band includes a mid-frequency band, and the second sub-frequency band includes a high-frequency band. It should be understood that this should not be construed as a limitation on the antenna 10 provided in the embodiments of this application.

[0097] When the antenna 10 is in the first state, the quarter-wavelength mode from the second connection point P2 to the first end 111 supports the target frequency band. When the target frequency band includes a first sub-frequency band and a second sub-frequency band, the specific situation is described as follows: When the antenna 10 is in the first state, the quarter-wavelength mode from the second connection point P2 to the first end 111 supports the first sub-frequency band; when the antenna 10 is in the first state, the quarter-wavelength mode from the second connection point P2 to the first end 111 supports the second sub-frequency band.

[0098] It should be noted that the "wavelength" in the quarter-wavelength mode from the second connection point P2 to the first end 111 refers to the wavelength corresponding to the center frequency of the first sub-band. The "wavelength" in the quarter-wavelength mode from the second connection point P2 to the first end 111 refers to the wavelength corresponding to the center frequency of the second sub-band.

[0099] The quarter-wavelength mode, also known as the fundamental mode, operates when the antenna 10 supports the first sub-band, and the antenna 10 exhibits high radiation efficiency in the first sub-band. Therefore, when the antenna 10 is in the first state, the quarter-wavelength mode from the second connection point P2 to the first terminal 111 supports the first sub-band, and the antenna 10 exhibits high radiation efficiency in the first sub-band.

[0100] Accordingly, the quarter-wavelength mode, also known as the fundamental mode, operates in the fundamental mode when the antenna 10 supports the second sub-band, and the antenna 10 has high radiation efficiency in the second sub-band. Therefore, when the antenna 10 is in the first state, the quarter-wavelength mode from the second connection point P2 to the first end 111 supports the second sub-band, and the antenna 10 has high radiation efficiency in the second sub-band.

[0101] When the antenna 10 is in the first state, and when the antenna 10 supports the first sub-band, the radiator 110 is excited by a first sub-resonant current (labeled I11 in the figure) to support the first sub-band. For example, in the current half-wavelength period shown in the figure, the first sub-resonant current flows from the second connection point P2 to the first end 111; it can be understood that the target resonant current is periodic, and in the next half-wavelength period, the first sub-resonant current flows from the first end 111 to the second connection point P2.

[0102] When the antenna 10 is in the first state, and when the antenna 10 supports the second sub-band, the radiator 110 is excited by a second sub-resonant current (labeled I12 in the figure) to support the second sub-band. For example, in the current half-wavelength period shown in the figure, the second sub-resonant current flows from the second connection point P2 to the first end 111; it can be understood that the target resonant current is periodic, and in the next half-wavelength period, the second sub-resonant current flows from the first end 111 to the second connection point P2.

[0103] Please refer to Figure 6, which is a partial dimensional schematic diagram of the radiator of the antenna shown in Figure 2. The length L of the portion of the radiator 110 located from the second connection point P2 to the first end 111 is shown. 01 Satisfying: λ1 / 4 - λ1 / 16 ≤ L 01 ≤λ1 / 4+λ1 / 16; where λ1 is the center frequency of the target frequency band.

[0104] The length L of the portion of the radiator 110 located from the second connection point P2 to the first end 111 01 It can be, but is not limited to, 3λ1 / 16, 7λ1 / 32, λ1 / 4, 9λ1 / 32, or 5λ1 / 16.

[0105] In this embodiment, the radiator 110 includes a first radiating portion 110a and a second radiating portion 110b that are bent and connected together. The first radiating portion 110a has a first end 111 and a first connection point P1, and the second radiating portion 110b has a second connection point P2 and a second end 112. For ease of description, the point where the first radiating portion 110a and the second radiating portion 110b connect is referred to as the bent connection point.

[0106] The length L of the portion of the radiator 110 located from the second connection point P2 to the first end 111 is [missing information]. 01 Including the portion L from the second connection point P2 to the bent connection. 11 and the length L of the first radiating part 110a12 sum.

[0107] When the length L of the portion of the radiator 110 located from the second connection point P2 to the first end 111 01 Satisfying: λ1 / 4 - λ1 / 16 ≤ L 01 When ≤λ1 / 4+λ1 / 16, the length of the portion of the radiator 110 located from the second connection point P2 to the first end 111 is well matched with the quarter-wavelength mode of the target frequency band supported by the radiator 110 when it is in the first state, thereby enabling the radiator 110 to have better antenna 10 performance when supporting the target frequency band.

[0108] Please refer to Figures 7 and 8. Figure 7 is a schematic diagram of the current distribution supporting the first sub-band of the target frequency band when the antenna provided in Figure 3 is in the second state; Figure 8 is a schematic diagram of the current distribution supporting the second sub-band of the target frequency band when the antenna provided in Figure 3 is in the second state. When the antenna 10 is in the second state, the quarter-wavelength mode from the first connection point P1 to the second end 112 supports the target frequency band.

[0109] It should be noted that the “wavelength” in the quarter-wave mode from the first connection point P1 to the second end 112 refers to the wavelength corresponding to the center frequency of the target frequency band.

[0110] When the antenna 10 is in the second state, the radiator 110 is excited to generate a second target resonant current to support the target frequency band. For example, in the current half-wavelength period, the second target resonant current flows from the first connection point P1 to the second terminal 112; it can be understood that the second target resonant current is periodic, and in the next half-wavelength period, the second target resonant current flows from the second terminal 112 to the first connection point P1.

[0111] The quarter-wavelength mode, also known as the fundamental mode, operates in the fundamental mode when the antenna 10 supports the target frequency band, and the antenna 10 has high radiation efficiency in the target frequency band. Therefore, when the antenna 10 is in the second state, the quarter-wavelength mode from the first connection point P1 to the second terminal 112 supports the target frequency band, and the antenna 10 has high radiation efficiency in the target frequency band.

[0112] In this embodiment, the target frequency band is illustrated by an example that includes a first sub-frequency band and a second sub-frequency band. For example, the target frequency band is a high-frequency band, the first sub-frequency band includes a mid-frequency band, and the second sub-frequency band includes a high-frequency band. It should be understood that this should not be construed as a limitation on the antenna 10 provided in the embodiments of this application.

[0113] When the antenna 10 is in the second state, the quarter-wavelength mode from the first connection point P1 to the second end 112 supports the target frequency band. When the target frequency band includes a first sub-frequency band and a second sub-frequency band, the specific situation is described as follows: When the antenna 10 is in the second state, the quarter-wavelength mode from the first connection point P1 to the second end 112 supports the first sub-frequency band; when the antenna 10 is in the second state, the quarter-wavelength mode from the first connection point P1 to the second end 112 supports the second sub-frequency band.

[0114] It should be noted that the "wavelength" in the first sub-band supported by the quarter-wavelength mode from the first connection point P1 to the second end 112 refers to the wavelength corresponding to the center frequency of the first sub-band. The "wavelength" in the second sub-band supported by the quarter-wavelength mode from the first connection point P1 to the second end 112 refers to the wavelength corresponding to the center frequency of the second sub-band.

[0115] The quarter-wavelength mode, also known as the fundamental mode, operates when the antenna 10 supports the first sub-band, and the antenna 10 has high radiation efficiency in the first sub-band. Therefore, when the antenna 10 is in the second state, the quarter-wavelength mode from the first connection point P1 to the second end 112 supports the first sub-band, and the antenna 10 has high radiation efficiency in the first sub-band.

[0116] Accordingly, the quarter-wavelength mode is also called the fundamental mode. When the antenna 10 supports the second sub-band, it operates in the fundamental mode, and the antenna 10 has high radiation efficiency in the second sub-band. Therefore, when the antenna 10 is in the second state, the quarter-wavelength mode from the first connection point P1 to the second end 112 supports the second sub-band, and the antenna 10 has high radiation efficiency in the second sub-band.

[0117] When the antenna 10 is in the second state, and when the antenna 10 supports the first sub-band, the radiator 110 is excited by a third sub-resonant current (labeled I13 in the figure) to support the first sub-band. For example, in the current half-wavelength period shown in the figure, the third sub-resonant current flows from the first connection point P1 to the second end 112; it can be understood that the target resonant current is periodic, and in the next half-wavelength period, the third sub-resonant current flows from the second end 112 to the first connection point P1.

[0118] When the antenna 10 is in the second state, and when the antenna 10 supports the second sub-band, the radiator 110 is excited by a fourth sub-resonant current (labeled I14 in the figure) to support the second sub-band. For example, in the current half-wavelength period shown in the figure, the fourth sub-resonant current flows from the first connection point P1 to the second end 112; it can be understood that the target resonant current is periodic, and in the next half-wavelength period, the fourth sub-resonant current flows from the second end 112 to the first connection point P1.

[0119] Please refer to Figure 9, which is a partial dimensional schematic diagram of the radiator of the antenna shown in Figure 3. The length L of the portion of the radiator 110 located from the first connection point P1 to the second end 112 is shown. 02 Satisfying: λ1 / 4 - λ1 / 16 ≤ L 02 ≤λ1 / 4+λ1 / 16; where λ1 is the center frequency of the target frequency band.

[0120] The length L of the portion of the radiator 110 located between the first connection point P1 and the second end 112 02 It can be, but is not limited to, 3λ1 / 16, 7λ1 / 32, λ1 / 4, 9λ1 / 32, or 5λ1 / 16.

[0121] In this embodiment, the radiator 110 includes a first radiating portion 110a and a second radiating portion 110b that are bent and connected together. The first radiating portion 110a has a first end 111 and a first connection point P1, and the second radiating portion 110b has a second connection point P2 and a second end 112. For ease of description, the point where the first radiating portion 110a and the second radiating portion 110b connect is referred to as the bent connection point.

[0122] The length L of the portion of the radiator 110 located from the second connection point P2 to the first end 111 is [missing information]. 02 Including the portion L from the first connection point P1 to the bent connection. 13 and the length L of the second radiating part 110b 14 sum.

[0123] When the length L of the portion of the radiator 110 located from the first connection point P1 to the second end 112 is... 02 Satisfying: λ1 / 4 - λ1 / 16 ≤ L 02When ≤λ1 / 4+λ1 / 16, the length of the portion of the radiator 110 located from the first connection point P1 to the second end 112 is well matched with the quarter-wavelength mode of the target frequency band supported by the radiator 110 when it is in the second state, thereby enabling the radiator 110 to have better antenna 10 performance when supporting the target frequency band.

[0124] Please refer to Figures 10 and 11. Figure 10 is a schematic diagram of an antenna provided according to an embodiment of this application; Figure 11 is a schematic diagram of the switch assembly shown in Figure 10. In this embodiment, the switch assembly 120 includes a common terminal 120a, a first switch 121, a second switch 122, a third switch 123, and a fourth switch 124. The common terminal 120a is electrically connected to the feed source S. One end of the first switch 121 is electrically connected to the common terminal 120a, and the other end of the first switch 121 is electrically connected to the first connection point P1. One end of the second switch 122 is electrically connected to the other end of the first switch 121, and the other end of the second switch 122 is grounded. One end of the third switch 123 is electrically connected to the common terminal 120a, and the other end of the third switch 123 is electrically connected to the second connection point P2. One end of the fourth switch 124 is electrically connected to the other end of the third switch 123, and the other end of the fourth switch 124 is grounded. When the antenna 10 is in the first state, the first switch 121 is on, the second switch 122 is off, the third switch 123 is off, and the fourth switch 124 is on. When the antenna 10 is in the second state, the first switch 121 is off, the second switch 122 is on, the third switch 123 is on, and the fourth switch 124 is off.

[0125] The common terminal 120a is electrically connected to the feed source S in a manner that is, but not limited to, through a matching circuit M. In other words, the antenna 10 includes a matching circuit M, and the common terminal 120a is electrically connected to the feed source S through the matching circuit M. When the antenna 10 further includes a matching circuit M, the matching circuit M is used to match the output impedance of the feed source S and the input impedance of the radiator 110. In another embodiment, the common terminal 120a is directly electrically connected to the feed source S.

[0126] In this embodiment, the switch assembly 120 further includes a first port 120b. The other end of the first switch 121 is electrically connected to the first connection point P1. Specifically, the other end of the first switch 121 is electrically connected to the first port 120b, and the first port 120b is electrically connected to the first connection point P1.

[0127] In this embodiment, the switch assembly 120 further includes a second port 120c. The other end of the third switch 123 is electrically connected to the second connection point P2. Specifically, the other end of the third switch 123 is electrically connected to the second port 120c, and the second port 120c is electrically connected to the second connection point P2.

[0128] The first switch 121 can be turned on or off. Correspondingly, the second switch 122 can be turned on or off. The third switch 123 can be turned on or off. The fourth switch 124 can be turned on or off.

[0129] The antenna 10 provided in this application embodiment can be in the first state or in the second state by controlling the states of the first switch 121, the second switch 122, the third switch 123 and the fourth switch 124.

[0130] When the first switch 121 is on and the second switch 122 is off, the common terminal 120a is electrically connected to the first connection point P1. Therefore, the feed source S is electrically connected to the first connection point P1, and the first connection point P1 serves as the feed point for the radiator 110. Correspondingly, since the third switch 123 is off and the fourth switch 124 is on, the second connection point P2 is grounded through the fourth switch 124, and the second connection point P2 serves as the ground point for the radiator 110. In summary, since the feed source S is electrically connected to the first connection point P1 via the switch assembly 120, the first connection point P1 serves as the feed point for the radiator 110, and the second connection point P2 is grounded, the antenna 10 is in the first state.

[0131] When the third switch 123 is on and the fourth switch 124 is off, the common terminal 120a is electrically connected to the second connection point P2. Therefore, the feed source S is electrically connected to the second connection point P2, and the second connection point P2 serves as the feed point for the radiator 110. Correspondingly, since the first switch 121 is off and the second switch 122 is on, the first connection point P1 is grounded through the second switch 122, and the first connection point P1 serves as the ground point for the radiator 110. In summary, since the feed source S is electrically connected to the second connection point P2 via the switch assembly 120, the second connection point P2 serves as the feed point for the radiator 110, and the first connection point P1 is grounded, the antenna 10 is in the second state.

[0132] The switching assembly 120 in the antenna 10 provided in this application includes a common terminal 120a, a first switch 121, a second switch 122, a third switch 123, and a fourth switch 124. By controlling the states of the first switch 121, the second switch 122, the third switch 123, and the fourth switch 124, the antenna 10 can be in either the first state or the second state, thereby resulting in different radiation patterns when the antenna 10 supports the target frequency band, and achieving reconfigurable radiation patterns for a single antenna. Therefore, in communication scenarios where the antenna 10 communicates with other devices, controlling the switching assembly 120 allows for the selection of the radiation pattern when the antenna 10 supports the target frequency band, thereby improving the communication experience when the antenna 10 supports the target frequency band. Thus, the antenna 10 provided in this application has good communication performance in the target frequency band. Furthermore, since the radiation pattern of the target frequency band can be reconstructed using a single antenna, it is not necessary to use multiple antennas 10 to reconstruct the radiation pattern of the target frequency band. When the antenna 10 is applied in the electronic device 1, it is convenient to arrange it with other devices in the electronic device 1.

[0133] Please refer again to Figures 10 and 11. In this embodiment, the antenna 10 further includes at least one of the first tuning device 131 and the second tuning device 132. The antenna 10 including at least one of the first tuning device 131 and the second tuning device 132 includes the following situations: the antenna 10 includes the first tuning device 131 but does not include the second tuning device 132; or the antenna 10 includes the second tuning device 132 but does not include the first tuning device 131; or the antenna 10 includes both the first tuning device 131 and the second tuning device 132. In the schematic diagram of this embodiment, the antenna 10 including the first tuning device 131 and the second tuning device 132 is used as an example for illustration. It should be understood that this should not be construed as a limitation on the antenna 10 provided in this application embodiment. It should be understood that in the antenna 10 provided in other embodiments, the antenna 10 may also not include the first tuning device 131 or the second tuning device 132.

[0134] When the antenna 10 further includes a first tuning device 131, the other end of the first switch 121 is electrically connected to the first tuning device 131 to the first connection point P1, and the first tuning device 131 is used to adjust the frequency of the target frequency band.

[0135] The other end of the first switch 121 is electrically connected to the first tuning device 131 to the first connection point P1. In other words, one end of the first tuning device 131 is electrically connected to the other end of the first switch 121, and the other end of the first tuning device 131 is electrically connected to the first connection point P1.

[0136] The first tuning device 131 may include, but is not limited to, an inductor, or a capacitor, or a combination of an inductor and a capacitor.

[0137] When the antenna 10 further includes a second tuning device 132, the other end of the third switch 123 is electrically connected to the second tuning device 132 to the second connection point P2.

[0138] The other end of the third switch 123 is electrically connected to the second tuning device 132 to the second connection point P2. In other words, one end of the second tuning device 132 is electrically connected to the other end of the third switch 123, and the other end of the second tuning device 132 is electrically connected to the second connection point P2.

[0139] The second tuning device 132 may include, but is not limited to, an inductor, or a capacitor, or a combination of an inductor and a capacitor.

[0140] Furthermore, referring again to Figures 10 and 11, in this embodiment, the antenna 10 further includes a third tuning device 133. One end of the third tuning device 133 is electrically connected to the first connection point P1, and the other end is grounded.

[0141] The third tuning device 133 may include an inductor. For example, when the third tuning device 133 includes an inductor, the inductance value may be, but is not limited to, 2nH to 5nH. For example, the inductance value of the third tuning device 133 may be, but is not limited to, 2nH, 3nH, 4nH, or 5nH.

[0142] The antenna 10 also includes a third tuning device 133, which can be used to adjust the frequency of the target frequency band.

[0143] When the antenna 10 further includes one of the first tuning device 131 and the second tuning device 132, and the antenna 10 further includes a third tuning device 133, the first tuning device 131 and the second tuning device 132 cooperate with the third tuning device 133 to adjust the frequency of the target frequency band.

[0144] Please refer to Figures 12 and 13. Figure 12 is a schematic diagram of an antenna 10 provided in another embodiment of this application; Figure 13 is a schematic diagram of the switch assembly shown in Figure 12. The switch assembly 120 includes a common terminal 120a, a first switch 121, a second switch 122, a third switch 123, and a fourth switch 124. The common terminal 120a is electrically connected to the feed source S. One end of the first switch 121 is electrically connected to the common terminal 120a, and the other end of the first switch 121 is electrically connected to the first connection point P1. One end of the second switch 122 is electrically connected to the other end of the first switch 121, and the other end of the second switch 122 is grounded. One end of the third switch 123 is electrically connected to the common terminal 120a, and the other end of the third switch 123 is electrically connected to the second connection point P2. One end of the fourth switch 124 is electrically connected to the other end of the third switch 123, and the other end of the fourth switch 124 is grounded.

[0145] In addition, the switch assembly 120 further includes a fifth switch 125, a sixth switch 126, a seventh switch 127, and an eighth switch 128. One end of the fifth switch 125 is electrically connected to the common terminal 120a, and the other end of the fifth switch 125 is electrically connected to the first connection point P1. One end of the sixth switch 126 is electrically connected to the other end of the fifth switch 125, and the other end of the sixth switch 126 is grounded. One end of the seventh switch 127 is electrically connected to the common terminal 120a, and the other end of the seventh switch 127 is electrically connected to the second connection point P2. One end of the eighth switch 128 is electrically connected to the other end of the seventh switch 127, and the other end of the eighth switch 128 is grounded. When the antenna 10 is in the first state, the fifth switch 125 is turned on, the sixth switch 126 is turned off, the seventh switch 127 is turned off, and the eighth switch 128 is turned on. When the antenna 10 is in the second state, the fifth switch 125 is open, the sixth switch 126 is on, the seventh switch 127 is on, and the eighth switch 128 is open.

[0146] The switch assembly 120 further includes a first port 120b. The other end of the first switch 121 is electrically connected to the first connection point P1. Specifically, the other end of the first switch 121 is electrically connected to the first port 120b, and the first port 120b is electrically connected to the first connection point P1.

[0147] In this embodiment, the switch assembly 120 further includes a second port 120c. The other end of the third switch 123 is electrically connected to the second connection point P2. Specifically, the other end of the third switch 123 is electrically connected to the second port 120c, and the second port 120c is electrically connected to the second connection point P2.

[0148] The switch assembly 120 further includes a third port 120d. The other end of the fifth switch 125 is electrically connected to the first connection point P1. Specifically, the other end of the fifth switch 125 is electrically connected to the third port 120d, and the third port 120d is electrically connected to the first connection point P1.

[0149] The switch assembly 120 also includes a fourth port 120e. The other end of the seventh switch 127 is electrically connected to the second connection point P2. Specifically, the other end of the seventh switch is electrically connected to the fourth port 120e, and the fourth port 120e is electrically connected to the second connection point P2.

[0150] When the switch assembly 120 includes a first switch 121, a second switch 122, a third switch 123, a fourth switch 124, a fifth switch 125, a sixth switch 126, a seventh switch 127, and an eighth switch 128, the first switch 121 can be turned on or off. Correspondingly, the second switch 122 can be turned on or off. The third switch 123 can be turned on or off. The fourth switch 124 can be turned on or off. The fifth switch 125 can be turned on or off. Correspondingly, the sixth switch 126 can be turned on or off. The seventh switch 127 can be turned on or off. The eighth switch 128 can be turned on or off.

[0151] The antenna 10 provided in this embodiment can be in the first state or in the second state by controlling the states of the first switch 121, the second switch 122, the third switch 123, the fourth switch 124, the fifth switch 125, the sixth switch 126, the seventh switch 127 and the eighth switch 128.

[0152] In conjunction with the previously described case where the switching assembly 120 of the antenna 10 includes a first switch 121, a second switch 122, a third switch 123, and a fourth switch 124, when the switching assembly 120 further includes a fifth switch 125, a sixth switch 126, a seventh switch 127, and an eighth switch 128, the specific situation of the antenna 10 being in the first state or in the second state is described as follows.

[0153] When the antenna 10 is in the first state: the first switch 121 is on, the second switch 122 is off, the third switch 123 is off, the fourth switch 124 is on, the fifth switch 125 is on, the sixth switch 126 is off, the seventh switch 127 is off, and the eighth switch 128 is on. Specifically, when the first switch 121 is on, the second switch 122 is off, the third switch 123 is off, the fourth switch 124 is on, the fifth switch 125 is on, the sixth switch 126 is off, the seventh switch 127 is off, and the eighth switch 128 is on, the feed source S is electrically connected to the first connection point P1, and the first connection point P1 serves as the feed point of the radiator 110. Correspondingly, the second connection point P2 is grounded.

[0154] When the antenna 10 is in the second state: the first switch 121 is open, the second switch 122 is on, the third switch 123 is on, the fourth switch 124 is open, the fifth switch 125 is open, the sixth switch 126 is on, the seventh switch 127 is on, and the eighth switch 128 is open. Specifically, when the first switch 121 is open, the second switch 122 is on, the third switch 123 is on, the fourth switch 124 is open, the fifth switch 125 is open, the sixth switch 126 is on, the seventh switch 127 is on, and the eighth switch 128 is open, the feed source S is electrically connected to the second connection point P2, and the second connection point P2 serves as the feed point of the radiator 110. Correspondingly, the first connection point P1 is grounded.

[0155] Therefore, the switching component 120 in the antenna 10 provided in this application embodiment includes a common terminal 120a, a first switch 121, a second switch 122, a third switch 123, a fourth switch 124, a fifth switch 125, a sixth switch 126, a seventh switch 127, and an eighth switch 128. By controlling the states of the first switch 121, the second switch 122, the third switch 123, the fourth switch 124, the fifth switch 125, the sixth switch 126, the seventh switch 127, and the eighth switch 128, the antenna 10 can be in either the first state or the second state, resulting in different radiation patterns when the antenna 10 supports the target frequency band, and achieving reconfigurable radiation patterns for a single antenna. Therefore, in communication scenarios where the antenna 10 communicates with other devices, controlling the switching component 120 to select the radiation pattern when the antenna 10 supports the target frequency band improves the communication experience when the antenna 10 supports the target frequency band. Thus, the antenna 10 provided in this application embodiment has good communication performance in the target frequency band. Furthermore, since the radiation pattern of the target frequency band can be reconstructed using a single antenna, it is not necessary to use multiple antennas 10 to reconstruct the radiation pattern of the target frequency band. When the antenna 10 is applied in the electronic device 1, it is convenient to arrange it with other devices in the electronic device 1.

[0156] Please refer again to Figures 12 and 13. In this embodiment, the antenna 10 further includes at least one of a fourth tuning device 134 and a fifth tuning device 135. The antenna 10 further including at least one of the fourth tuning device 134 and the fifth tuning device 135 includes the following situations: the antenna 10 includes the fourth tuning device 134 but does not include the fifth tuning device 135; or the antenna 10 includes the fifth tuning device 135 but does not include the fourth tuning device 134; or the antenna 10 includes the fourth tuning device 134 and includes the fifth tuning device 135.

[0157] In the schematic diagram of this embodiment, the antenna 10 includes a fourth tuning device 134 and a fifth tuning device 135 as an example for illustration. It should be understood that this should not be construed as a limitation on the antenna 10 provided in this application. In this embodiment, the antenna 10 including the fourth tuning device 134 and the fifth tuning device 135 is illustrated in an embodiment where the antenna 10 also includes a first tuning device 131, a second tuning device 132, and a third tuning device 133. It should be understood that this should not be construed as a limitation on the embodiment of this application. In other embodiments, the antenna 10 including one of the fourth tuning device 134 and the fifth tuning device 135 can be incorporated into the antenna 10 provided in any of the preceding embodiments.

[0158] When the antenna 10 further includes a fourth tuning device 134, the other end of the fifth switch 125 is electrically connected to the fourth tuning device 134 to the first connection point P1.

[0159] The other end of the fifth switch 125 is electrically connected to the fourth tuning device 134 to the first connection point P1. In other words, one end of the fourth tuning device 134 is electrically connected to the other end of the fifth switch 125, and the other end of the fourth tuning device 134 is electrically connected to the first connection point P1.

[0160] The fourth tuning device 134 may include, but is not limited to, an inductor, a capacitor, or a combination of an inductor and a capacitor.

[0161] When the antenna 10 further includes a fifth tuning device 135, the other end of the seventh switch 127 is electrically connected to the fifth tuning device 135 to the second connection point P2.

[0162] The other end of the seventh switch 127 is electrically connected to the fifth tuning device 135 to the second connection point P2. In other words, one end of the fifth tuning device 135 is electrically connected to the other end of the seventh switch 127, and the other end of the fifth tuning device 135 is electrically connected to the second connection point P2.

[0163] The fifth tuning device 135 may include, but is not limited to, an inductor, or a capacitor, or a combination of an inductor and a capacitor.

[0164] Furthermore, referring again to Figures 12 and 13, the antenna 10 also includes a sixth tuning device 136. One end of the sixth tuning device 136 is electrically connected to the second connection point P2, and the other end is grounded.

[0165] The sixth tuning device 136 may include an inductor. For example, when the sixth tuning device 136 includes an inductor, the inductance value may be, but is not limited to, 2nH to 5nH. For example, the inductance value of the sixth tuning device 136 may be, but is not limited to, 2nH, 3nH, 4nH, or 5nH.

[0166] The antenna 10 also includes a sixth tuning device 136, which can be used to adjust the frequency of the target frequency band.

[0167] When the antenna 10 further includes one of the fourth tuning device 134 and the fifth tuning device 135, and the antenna 10 further includes a sixth tuning device 136, the fourth tuning device 134 and the fifth tuning device 135 cooperate with the sixth tuning device 136 to adjust the frequency of the target frequency band.

[0168] The antenna 10 provided in one embodiment of this application will be simulated and described next. In this embodiment, the antenna 10 shown in FIG12 is used as an example for simulation, and the target frequency band is taken as a mid-high frequency band, the first sub-band of the target frequency band is taken as a mid-frequency band, and the second sub-band of the target frequency band is taken as a high-frequency band.

[0169] First, the resonant current, radiation pattern, etc. of the antenna 10 provided in this application are simulated when it is in the first state.

[0170] Please refer to Figures 14 and 15. Figure 14 is a structural schematic diagram of the radiator of the antenna shown in Figure 12; Figure 15 is a schematic diagram of the resonant current in the target frequency band when the antenna shown in Figure 14 is in the first state. In Figure 14, the radiator 110 is illustrated as a frame 320 formed in the middle frame 30 of the electronic device 1. In Figure 15, the antenna 10 is in the first state, the first connection point P1 is the feed point of the radiator 110, and the second connection point P2 is the ground point of the radiator 110. As can be seen from Figure 15, when the antenna 10 is in the first state, the radiator 110 is excited to generate a first target resonant current to support the target frequency band. During the current half-wavelength period, the first target resonant current flows from the second connection point P2 to the first end 111. Thus, when the antenna 10 is in the first state, the quarter-wavelength mode from the second connection point P2 to the first end 111 of the radiator 110 supports the target frequency band.

[0171] Please refer to Figure 16, which shows the three-dimensional radiation patterns of the first and second sub-bands of the target frequency band when the antenna shown in Figure 12 is in the first state. Specifically, (I) in Figure 16 shows the three-dimensional (3D) radiation pattern of the antenna 10 in the first state in the first sub-band; and (II) in Figure 16 shows the three-dimensional (3D) radiation pattern of the antenna 10 in the first state in the second sub-band. In this embodiment, the simulation is performed using an example where the first sub-band is 1.85 GHz in the intermediate frequency band and the second sub-band is 2.55 GHz in the high frequency band.

[0172] Please refer to Figure 17, which shows the two-dimensional radiation patterns of the first and second sub-bands of the target frequency band when the antenna shown in Figure 12 is in the first state. In Figure 17, (I) is the two-dimensional (2D) radiation pattern of the antenna 10 shown in Figure 12 in the first sub-band when it is in the first state; and (II) is the two-dimensional (2D) radiation pattern of the antenna 10 shown in Figure 12 in the second sub-band when it is in the first state.

[0173] Next, the resonant current, radiation pattern, etc., of the antenna 10 provided in this application when it is in the second state are simulated. Please refer to Figure 18, which is a schematic diagram of the resonant current in the target frequency band when the antenna shown in Figure 14 is in the second state. In Figure 18, the antenna 10 is in the second state, the first connection point P1 is the grounding point of the radiator 110, and the second connection point P2 is the feed point of the radiator 110. As can be seen from Figure 18, when the antenna 10 is in the second state, the radiator 110 is excited to generate a second target resonant current to support the target frequency band. During the current half-wavelength period, the second target resonant current flows from the first connection point P1 to the second end 112. Thus, when the antenna 10 is in the second state, the quarter-wavelength mode from the first connection point P1 to the second end 112 of the radiator 110 supports the target frequency band.

[0174] Please refer to Figure 19, which shows the three-dimensional radiation patterns of the first and second sub-bands of the target frequency band when the antenna shown in Figure 12 is in the second state. Specifically, (I) in Figure 19 shows the three-dimensional (3D) radiation pattern of the antenna 10 in the first sub-band when it is in the second state; and (II) in Figure 19 shows the three-dimensional (3D) radiation pattern of the antenna 10 in the second sub-band when it is in the second state. In this embodiment, the simulation is performed using an example where the first sub-band is 1.85 GHz in the intermediate frequency band and the second sub-band is 2.55 GHz in the high frequency band.

[0175] Please refer to Figure 20, which shows the two-dimensional radiation patterns of the first and second sub-bands of the target frequency band when the antenna shown in Figure 12 is in the second state. In Figure 20, (I) is the two-dimensional (2D) radiation pattern of the antenna 10 shown in Figure 12 in the first sub-band when it is in the second state; and (II) is the two-dimensional (2D) radiation pattern of the antenna 10 shown in Figure 12 in the second sub-band when it is in the second state.

[0176] Combining the radiation patterns of antenna 10 in the first sub-frequency band when it is in the first state and in the second state when it is in the first sub-frequency band, it can be seen that the radiation patterns of antenna 10 in the first state and in the first sub-frequency band are different. Furthermore, comparing the radiation pattern of antenna 10 in the first state and in the first sub-frequency band with that in the second state, the directivity of antenna 10 has changed significantly. Further, it can be seen from the radiation patterns of antenna 10 in the first state and in the first sub-frequency band that they have good complementarity.

[0177] Accordingly, by combining the radiation patterns of antenna 10 in the first state and the second state in the second sub-frequency band, it can be seen that the radiation patterns of antenna 10 in the first state and the second state in the second sub-frequency band are different. Furthermore, comparing the radiation pattern of antenna 10 in the first state and the second state in the second sub-frequency band, the directivity of antenna 10 has changed significantly. Further, by comparing the radiation patterns of antenna 10 in the first state and the second state in the second sub-frequency band, it can be seen that the radiation patterns of antenna 10 in the first state and the second state in the second sub-frequency band have good complementarity.

[0178] In summary, the antenna 10 provided in this application includes a switching component 120. By changing the state of the antenna 10 component, the position of the feed point of the radiator 110 is changed, thereby constructing two antenna 10 configurations with different orientations in the same frequency band. This enables reconfigurable radiation patterns when a single antenna supports the target frequency band, and the first and second radiation patterns are highly complementary, resulting in good coverage of the antenna 10 in all directions within the target frequency band. Specifically, areas with stronger signals in the first radiation pattern can better cover areas with weaker signals in the second radiation pattern, and correspondingly, areas with stronger signals in the second radiation pattern can better cover areas with weaker signals in the first radiation pattern. Therefore, the antenna 10 exhibits good communication performance in the target frequency band.

[0179] Furthermore, 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 10 as described in any of the preceding embodiments. The antenna 10 is described in the preceding description and will not be repeated here. Please refer to Figures 21 and 22. Figure 21 is a perspective view of an electronic device provided in one embodiment; Figure 22 is a partial structural diagram of the electronic device in Figure 21. The electronic device 1 also includes a display screen 70, a mid-frame 30, and a housing 90 (also called a battery cover). The display screen 70 and the housing 90 are respectively disposed on opposite sides of the mid-frame 30. Referring to Figure 22, the mid-frame 30 includes a frame body 310 and a border 320. In this embodiment, the frame body 310 can serve as a ground electrode. The frame 320 surrounds the periphery of the frame body 310. The radiator 110 of the antenna 10 is formed in the frame 320.

[0180] 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 housing 90. 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.

[0181] Specifically, in this embodiment, the frame 320 has a first gap 320a and a second gap 320b, thereby forming a portion of the frame between the first gap 320a and the second gap 320b as a radiator 110.

[0182] Compared to the structure where the radiator 110 is independent of the middle frame 30, in this embodiment, part of the side frame of the middle frame 30 of the electronic device 1 is reused as the radiator 110, which makes the electronic device 1 smaller in size and easier to assemble.

[0183] 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 10 is applied, and the specific structure of the electronic device 1 should not be construed as a limitation on the antenna 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.

[0184] Please refer to Figure 22. The frame 320 includes a first frame 321 and a second frame 322 that are bent and connected together. The length of the second frame 322 is greater than the length of the first frame 321. Correspondingly, the radiator 110 includes a first radiating portion 110a and a second radiating portion 110b that are bent and connected together. The first radiating portion 110a has a first end 111 and a first connection point P1, and the second radiating portion 110b has a second end 112 and a second connection point P2. The first radiating portion 110a of the radiator 110 is located on the first frame 321, and the second radiating portion 110b is located on the second frame 322. The first gap 320a is located on the first frame 321, and the second gap 320b is located on the second frame 322. It should be understood that the position of the radiator 110 shown in this embodiment should not be construed as a limitation on the embodiments of this application. In other embodiments, the radiator 110 may also be entirely located on the first frame 321, or the radiator 110 may be entirely located on the second frame 322.

[0185] 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, wherein, The antenna includes: A radiator, comprising a first end, a first connection point, a second connection point, and a second end arranged sequentially; A switch assembly, one end of which is electrically connected to the first connection point and the other end of which is electrically connected to the second connection point; and A feed source, the feed source being electrically connected to the switching assembly; The antenna has a first state and a second state. When the antenna is in the first state: the feed source is electrically connected to the first connection point via the switching assembly, the second connection point is grounded, the antenna supports the target frequency band, and has a first radiation pattern; when the antenna is in the second state: the feed source is electrically connected to the second connection point via the switching assembly, the first connection point is grounded, the antenna assembly supports the target frequency band, and has a second radiation pattern; the first radiation pattern is different from the second radiation pattern.

2. The antenna as claimed in claim 1, wherein, When the antenna is in the first state, the quarter-wavelength mode from the second connection point to the first end supports the target frequency band.

3. The antenna as described in claim 2, wherein, The target frequency band includes a first sub-frequency band and a second sub-frequency band; When the antenna is in the first state, the quarter-wavelength mode from the second connection point to the first end supports the first sub-band. When the antenna is in the first state, the quarter-wavelength mode from the second connection point to the first end supports the second sub-band.

4. The antenna as claimed in claim 2, wherein, The length L of the portion of the radiator located between the second connection point and the first end is... 01 Satisfying: λ1 / 4 - λ1 / 16 ≤ L 01 ≤λ1 / 4+λ1 / 16; where λ1 is the center frequency of the target frequency band.

5. The antenna as claimed in claim 1, wherein, When the antenna is in the second state, the quarter-wavelength mode from the first connection point to the second end supports the target frequency band.

6. The antenna as claimed in claim 5, wherein, The target frequency band includes a first sub-frequency band and a second sub-frequency band; When the antenna is in the second state, the quarter-wavelength mode from the first connection point to the second end supports the first sub-band. When the antenna is in the second state, the quarter-wavelength mode from the first connection point to the second end supports the second sub-band.

7. The antenna as claimed in claim 5, wherein, The length L of the portion of the radiator located between the first connection point and the second end is... 02 Satisfying: λ1 / 4 - λ1 / 16 ≤ L 02 ≤λ1 / 4+λ1 / 16; where λ1 is the center frequency of the target frequency band.

8. The antenna as claimed in claim 1, wherein, The switching assembly includes: The common terminal is electrically connected to the feed source; A first switch, one end of which is electrically connected to the common terminal, and the other end of which is electrically connected to the first connection point; A second switch, one end of which is electrically connected to the other end of the first switch, and the other end of which is grounded; A third switch, one end of which is electrically connected to the common terminal, and the other end of which is electrically connected to the second connection point; and A fourth switch, one end of which is electrically connected to the other end of the third switch, and the other end of which is grounded; When the antenna is in the first state, the first switch is turned on, the second switch is turned off, the third switch is turned off, and the fourth switch is turned on; When the antenna is in the second state, the first switch is off, the second switch is on, the third switch is on, and the fourth switch is off.

9. The antenna as claimed in claim 8, wherein, The antenna further includes at least one of a first tuning device and a second tuning device; When the antenna further includes a first tuning device, the other end of the first switch is electrically connected to the first tuning device to the first connection point, and the first tuning device is used to adjust the frequency of the target frequency band; When the antenna further includes a second tuning device, the other end of the third switch is electrically connected to the second tuning device to the second connection point.

10. The antenna as claimed in claim 9, wherein, The antenna also includes: The third tuning device has one end electrically connected to the first connection point and the other end grounded.

11. The antenna as claimed in claim 10, wherein, The third tuning device includes an inductor, the inductance of which is in the range of 2nH to 5nH.

12. The antenna as described in any one of claims 8-10, wherein, The switching assembly further includes: The fifth switch, one end of which is electrically connected to the common terminal, and the other end of which is electrically connected to the first connection point; A sixth switch, one end of which is electrically connected to the other end of the fifth switch, and the other end of which is grounded; A seventh switch, one end of which is electrically connected to the common terminal, and the other end of which is electrically connected to the second connection point; and An eighth switch, one end of which is electrically connected to the other end of the seventh switch, and the other end of which is grounded; When the antenna is in the first state, the fifth switch is turned on, the sixth switch is turned off, the seventh switch is turned off, and the eighth switch is turned on; When the antenna is in the second state, the fifth switch is off, the sixth switch is on, the seventh switch is on, and the eighth switch is off.

13. The antenna as claimed in claim 12, wherein, The antenna further includes at least one of a fourth tuning device and a fifth tuning device; When the antenna further includes a fourth tuning device, the other end of the fifth switch is electrically connected to the fourth tuning device to the first connection point; When the antenna further includes a fifth tuning device, the other end of the seventh switch is electrically connected to the fifth tuning device to the second connection point.

14. The antenna as claimed in claim 13, wherein, The antenna also includes: The sixth tuning device has one end electrically connected to the second connection point and the other end grounded.

15. The antenna assembly of claim 14, wherein, The sixth tuning device includes an inductor, the inductance of which is in the range of 2nH to 5nH.

16. The antenna as claimed in claim 2 or 6, wherein, The first sub-band includes a mid-frequency band, and the second sub-band includes a high-frequency band.

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

18. The electronic device of claim 17, wherein, The electronic device includes a mid-frame, which includes a frame body and a border, and the radiator of the antenna is formed on the border.

19. The electronic device of claim 18, wherein, The frame has a first gap and a second gap, and the portion of the frame located between the first gap and the second gap forms the radiator.

20. The electronic device of claim 19, wherein, The border includes a first border and a second border that are bent and connected together, wherein the length of the second border is greater than the length of the first border. The radiator includes a first radiating part and a second radiating part that are bent and connected together. The first radiating part has a first end and a first connection point, and the second radiating part has a second end and a second connection point. The first radiating part of the radiator is located on the frame, the second radiating part is located on the second frame, the first gap is located on the first frame, and the second gap is located on the second frame.

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