Antenna devices and electronic equipment

Abstract

This application relates to an antenna device and an electronic device. In the antenna device, a radiator has a first ground point and a feed point connected to a feed source. The radiator is used to couple to a metal ground plane under the excitation of the feed source. A parasitic stub has a second ground point, and a gap exists between the parasitic stub and the radiator. A tuning circuit is connected to the feed source and the feed point, respectively. The tuning circuit supports the radiator and the parasitic stub in operating in a first resonant mode to support a first frequency band. The tuning circuit also adjusts the radiator to support a second and a third frequency band, wherein the first, second, and third frequency bands are different. The first resonant mode is the mode in which the excitation current provided by the feed source resonates between a first target end and a second target end. The first target end is the end of the radiator away from the parasitic stub, and the second target end is the end of the parasitic stub away from the radiator. This antenna device can achieve broadband design with a small clearance, for example, it can accommodate both WiFi 7 and UWB bands.

Description

Technical Field

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

[0002] As mobile phones and other electronic devices become increasingly thinner and smaller, the resulting reduction in headroom makes it difficult to meet communication performance requirements. Summary of the Invention

[0003] Therefore, it is necessary to provide an antenna device and an electronic device.

[0004] Firstly, an antenna device is provided, including:

[0005] Metal flooring;

[0006] Feed source;

[0007] The radiator has a first grounding point and a feed point connected to the feed source. The radiator is used to couple to the metal ground plane under the excitation of the feed source.

[0008] The parasitic branch has a second grounding point, and there is a gap between the parasitic branch and the radiator;

[0009] The tuning circuit is connected to the feed source and the feed point respectively. The tuning circuit is used to support the radiator and the parasitic stub to work in the first resonant mode to support the first frequency band. The tuning circuit is also used to adjust the radiator to support the second and third frequency bands, wherein the first, second and third frequency bands are different.

[0010] The first resonant mode is the mode in which the excitation current provided by the feed resonates between the first target end and the second target end. The first target end is the end of the radiator that is far away from the parasitic branch, and the second target end is the end of the parasitic branch that is far away from the radiator.

[0011] Secondly, an electronic device is provided, including the antenna device described above.

[0012] The aforementioned antenna device and electronic equipment have grounding points on the parasitic stubs, forming a parasitic structure in the form of a ring L. By adding two additional boundary conditions, under the tuning action of the tuning circuit, in conjunction with the radiator, it can support a mode in which the excitation current resonates between the first target end and the second target end. The first target end is the end of the radiator away from the parasitic stub, and the second target end is the end of the parasitic stub away from the radiator, to support the first frequency band. At the same time, it is also used to adjust the radiator to support the second and third frequency bands. The frequency ranges of the first, second, and third frequency bands are different. That is, only by adding parasitic stubs to the radiator, a broadband design can be achieved, which is beneficial to improving the antenna communication performance under small clearance conditions. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology 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.

[0014] Figure 1 This is one of the structural schematic diagrams of an antenna device according to an embodiment;

[0015] Figure 2 This is a second schematic diagram of the antenna device according to one embodiment;

[0016] Figure 3 for Figure 1 Schematic diagram of S-parameters and efficiency test results under the structure;

[0017] Figure 4 for Figure 1 Under this structure, the radiation distribution of the antenna device in the UWB CH5 band is shown.

[0018] Figure 5 for Figure 1 Under this structure, a schematic diagram showing the radiation ratio of the antenna device in the UWB CH5 band;

[0019] Figure 6 for Figure 1 Under this structure, the radiation distribution of the antenna device in the UWB CH9 band is shown.

[0020] Figure 7 for Figure 1 Under this structure, a schematic diagram showing the radiation ratio of the antenna device in the UWB CH9 band;

[0021] Figure 8 for Figure 2 A schematic diagram showing the S-parameters and efficiency test results of the antenna device under the given structure;

[0022] Figure 9 A third schematic diagram of the antenna device according to one embodiment;

[0023] Figure 10a This is one of the structural schematic diagrams of the tuning units in the antenna device in one embodiment;

[0024] Figure 10b This is a second schematic diagram of the structure of each tuning unit in the antenna device in one embodiment;

[0025] Figure 10c This is the third schematic diagram of the structure of each tuning unit in the antenna device in one embodiment;

[0026] Figure 10d This is the fourth schematic diagram of the structure of each tuning unit in the antenna device in one embodiment;

[0027] Figure 10e This is the fifth schematic diagram of the structure of each tuning unit in the antenna device in one embodiment;

[0028] Figure 10f This is a schematic diagram of the structure of each tuning unit in the antenna device in one embodiment;

[0029] Figure 10g This is the seventh schematic diagram of the structure of each tuning unit in the antenna device in one embodiment;

[0030] Figure 10h This is the eighth schematic diagram of the structure of each tuning unit in the antenna device in one embodiment;

[0031] Figure 11 This is one of the structural schematic diagrams of an electronic device according to an embodiment;

[0032] Figure 12 This is a second schematic diagram of the structure of an electronic device according to an embodiment. Detailed Implementation

[0033] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application.

[0035] It is understood that the terms "first," "second," etc., used herein may be used to describe various elements / components, but these elements / components are not limited by these terms. These terms are only used to distinguish one element / component from another. For example, without departing from the scope of this application, a first side border may be referred to as a second side border, and similarly, a second side border may be referred to as a first side border. Both the first side border and the second side border are side borders, but they are not the same side border.

[0036] It is understandable that "at least one" refers to one or more, and "multiple" refers to two or more. "At least a part of an element" refers to part or all of an element.

[0037] The antenna device provided in this application embodiment can be applied to electronic devices. These electronic devices can be handheld devices, vehicle-mounted devices, wearable devices, computing devices, or other processing devices connected to a wireless modem, as well as various forms of user equipment (UE) (e.g., mobile phones), mobile stations (MS), etc. For ease of description, the devices mentioned above are collectively referred to as electronic devices.

[0038] In one embodiment, such as Figure 1 As shown, an antenna device is provided, including: a metal ground plane 90, a feed source S1, a radiator 10, a parasitic stub 20, and a tuning circuit M. The feed source S1 is a device that provides excitation current.

[0039] The radiator 10 has a first grounding point D1 and a feed point K connected to the feed source S1. The radiator 10 is used to couple with the metal floor 90 under the excitation of the feed source S1.

[0040] The parasitic stub 20 has a second grounding point D2, and there is a gap between the parasitic stub 20 and the radiator 10. When the radiator 10 transmits excitation current under the excitation of the feed S1, the gap can be used as a capacitor for the radiator 10, without affecting the current distribution.

[0041] The tuning circuit M is connected to the feed source S1 and the feed point K, respectively. The tuning circuit M is used to support the radiator 10 and the parasitic stub 20 to operate in the first resonant mode to support the first frequency band. The tuning circuit M is also used to adjust the radiator 10 to support the second and third frequency bands. The first, second, and third frequency bands are different. The first resonant mode is the mode in which the excitation current provided by the feed source S1 resonates between the first target end and the second target end. The first target end is the end of the radiator 10 away from the parasitic stub 20, and the second target end is the end of the parasitic stub 20 away from the radiator 10.

[0042] Optionally, the tuning circuit M may include at least one or a combination of capacitors, resistors, and inductors. In this embodiment, no further limitations are made on the type of frequency modulation devices included in the tuning circuit M or the connection relationships between the devices.

[0043] Optionally, the radiator 10 and the parasitic branch 20 can be one of the following: a flexible printed circuit board (FPC) antenna radiator, a laser direct structural (LDS) antenna radiator, a printed direct structural (PDS) antenna radiator, or a metal radiating branch. In this embodiment, the types of the radiator 10 and the parasitic branch 20 are not further limited, and the types of the radiator 10 and the parasitic branch 20 can be the same or different. For example, both can be LDS antenna radiators.

[0044] Specifically, the antenna device provided in this application embodiment forms a parasitic structure in the form of a ring L based on the parasitic stub 20 with a second grounding point D2. Two additional boundary conditions are added to the radiator 10. Under the tuning action of the tuning circuit M, the parasitic stub 20 cooperates with the radiator 10 to support a first resonant mode where the excitation current resonates between the first target end and the second target end. The first target end is the end of the radiator 10 furthest from the parasitic stub 20, and the second target end is the end of the parasitic stub 20 furthest from the radiator 10, to support the first frequency band. Furthermore, the tuning circuit M is also used to adjust the radiator 10 to support the second and third frequency bands. The frequency ranges of the first, second, and third frequency bands are different. That is, only the addition of the parasitic stub 20 to the radiator 10 is needed to achieve a broadband design, which is beneficial for improving antenna communication performance under small clearance conditions.

[0045] The antenna, consisting of radiator 10, tuning circuit M, and feed S1, can be an antenna supporting WiFi 5G. Combined with parasitic stub 20, it can support WiFi 7 multi-band and UWB (Ultra-Wide Band) communication.

[0046] In one embodiment, such as Figure 1 and Figure 2 As shown, the radiator 10 has a first end and a second end, with a first grounding point D1 located at the first end and a feed point K located at the second end. The tuning circuit M supports the radiator 10 operating in a second resonant mode to support a second frequency band. The second resonant mode is a circulating current mode from the first grounding point D1 to the feed point K, and the current distribution in this mode is as follows: Figure 1 and Figure 2 As shown in I2, the feed current flows from the first grounding point D1 on the radiator 10 to the feed point K, and from the feed point K to the feed source S1.

[0047] When the feed source S1 provides the excitation current corresponding to the second frequency band, the tuning circuit M is adjusted to support the passage of the excitation signal corresponding to the second frequency band. After the excitation current passes through the tuning circuit M, it is connected to the radiator 10 from the feed point K, transmitted on the radiator 10, and fed out based on the first ground point D1 to realize the feeding on the feeding path, so as to support the circulation mode from the first ground point D1 to the feed point K.

[0048] In one embodiment, the tuning circuit M is also used to support the radiator 10 to operate in a third resonant mode to support a third frequency band, the third resonant mode being a semi-circular current mode from the first ground point D1 to the feed point K.

[0049] The current distribution in this mode is as follows Figure 1 and Figure 2 As shown in I3, the current is distributed in the opposite direction from the zero point of the current on the radiator 10, that is, from the first feed point K to the zero point of the current and from the first ground point D1 to the zero point of the current.

[0050] When the feed source S1 provides the excitation current corresponding to the third frequency band, the tuning circuit M is adjusted to support the passage of the excitation signal corresponding to the third frequency band. After the excitation current passes through the tuning circuit M, it is connected to the radiator 10 from the feed point K, transmitted on the radiator 10, and transmitted to the current zero point on the radiator 10. At the same time, based on the common ground, the feed current is transmitted from the first ground point D1 to the current zero point on the radiator 10 to support the semi-circular current mode from the first ground point D1 to the feed point K.

[0051] In one embodiment, such as Figure 1 As shown, the parasitic stub 20 has a coupling end and a first free end, and there is a gap between the first end of the radiator 10 and the coupling end of the parasitic stub 20. The second grounding point D2 is located at the coupling end. The first resonant mode includes a half-circulation mode from the feed point K to the first grounding point D1, and a quarter-wavelength mode from the second grounding point D2 to the first free end.

[0052] The current distribution in this mode is as follows Figure 1 As shown in I1, the current is zero on the radiator 10, the current is reversed, and the current flows from the second ground point D2 to the first free end.

[0053] When the feed source S1 provides the excitation current corresponding to the first frequency band, the tuning circuit M is adjusted to support the passage of the excitation signal corresponding to the first frequency band. After passing through the tuning circuit M, the excitation current is connected to the radiator 10 from the feed point K, propagates on the radiator 10, and is transmitted to the current zero point on the radiator 10. Simultaneously, based on a common ground, the feed current is transmitted from the first ground point D1 to the current zero point on the radiator 10 to support the semi-circular current mode from the first ground point D1 to the feed point K. In addition, based on a common ground, the excitation current is fed from the metal ground 90 into the second ground point D2, and from the second ground point D2 to the first free end.

[0054] The antenna device provided in this application embodiment supports multiple resonant modes due to the presence of the parasitic stub 20. At the same time, it also implicitly includes a quarter-wavelength mode from the second grounding point D2 to the first free end. The frequencies of each resonant mode are close, thus widening the bandwidth.

[0055] like Figure 1 Under the architecture shown, the S-parameters and efficiency of the feed port of feed S1 are as follows: Figure 3 As shown, the radiator 10 supports frequency bands covering 4.5GHz-9GHz, which includes the WIFI 7 band, as well as the UWB CH5 (6.2-6.7GHz) and UWB CH9 (7.7-8.2GHz) bands.

[0056] like Figure 1 Tests were conducted under the architecture shown, and the results were as follows: Figure 3 The test results, as shown in curve S1,1, indicate that under the adjustment of the tuning circuit M, when the radiator 10 supports the circulating current mode from the first ground point D1 to the feed point K, the radiator 10 operates at a resonant frequency of 4.6824 GHz. When the radiator 10 supports the half-circulating current mode from the first ground point D1 to the feed point K, the radiator 10 operates at a resonant frequency of 7.5134 GHz. Under the adjustment of the tuning circuit M, when the first resonant mode supported by the radiator 10 and the parasitic stub 20 includes the half-circulating current mode from the first ground point D1 to the feed point K and the quarter-wavelength mode from the second ground point D2 to the first free end, it operates at a resonant frequency of 8.3626 GHz. From the system overall efficiency curve E... T Let's look at (E in the picture) R (See the system efficiency curve). The radiation efficiency is relatively high in the frequency range of 4.5GHz to 9GHz. That is, the antenna device provided in this application embodiment can achieve high-efficiency radiation in a wide frequency band of 4.5GHz to 9GHz, realizing wide bandwidth design and improved communication efficiency. Moreover, even when the radiator 10 and the parasitic branch 20 are LDS antenna radiators 10, it still has high efficiency and ultra-wide bandwidth.

[0057] Furthermore, the antenna device provided in this application embodiment, when supporting the UWB frequency band, has a main radiation direction that is perpendicular to the metal floor 90.

[0058] For example, in such Figure 1 Under the architecture shown, the total field pattern of the UWB CH5 band is as follows: Figure 4 As shown, at this time, the forward direction (with the z-axis as the forward direction) of the antenna device occupies approximately... Figure 5 As shown, the main radiation direction of the antenna device is forward (the forward ratio is 0.116 / 0.214, approximately 54.2%), which meets the requirements of UWB antennas and can realize functions such as UWB object finding and ranging.

[0059] In such Figure 1 Under the architecture shown, the total field pattern of the UWB CH9 band is as follows: Figure 6 As shown, at this time, the forward direction (with the z-axis as the forward direction) of the antenna device occupies approximately... Figure 7 As shown, the main radiation direction of the antenna device is forward (the forward ratio is 0.181 / 0.315, approximately 57.5%), which meets the requirements of UWB antennas and can realize functions such as UWB object finding and ranging.

[0060] The antenna device provided in this application embodiment utilizes the characteristic that the gap can be equivalent to a capacitor for high frequencies, introduces a parasitic branch 20 with a second grounding point D2, forms a LOOP-L parasitic structure, adds two additional boundary conditions, forms a multimode antenna, expands the bandwidth, covers the WIFI 7 band, and supports at least one UWB band.

[0061] In one embodiment, such as Figure 2 As shown, the parasitic stub 20 has a grounded end and a second free end, and there is a gap between the second end of the radiator 10 and the second free end of the parasitic stub 20. The second grounding point D2 is located at the grounded end. The first resonant mode includes a circulation mode from the first grounding point D1 to the second grounding point D2.

[0062] The current distribution in this mode is as follows Figure 2 As shown in I1, the distance from the first grounding point D1 to the feed point K, and from the second free end to the second grounding point D2.

[0063] In one embodiment, the radiator 10 supports WiFi 5G, which operates at a higher frequency. The gap in this case only acts as a capacitive load for the radiator 10 and does not affect the current distribution. The first resonant mode is a circulating current mode from the first grounding point D1 to the second grounding point D2, the second resonant mode is a circulating current mode from the first grounding point D1 to the feed point K, and the third resonant mode is a semi-circulating current mode from the first grounding point D1 to the feed point K. That is, due to the presence of the parasitic stub 20, the circulating current mode is doubled, thereby expanding the bandwidth and achieving a broadband design under limited clearance.

[0064] In one embodiment, such as Figure 2 As shown, the tuning circuit M is also used to support the radiator 10 and the parasitic stub 20 to work together in the fourth resonant mode to support the fourth frequency band. The fourth resonant mode is a semi-circular current mode from the first ground point D1 to the second ground point D2 (the current distribution is shown in Figure I4, from the first ground point D1 to the zero current point on the radiator 10, and from the second ground point D2 to the second free end, and from the feed point K to the zero current point on the radiator 10). The fourth frequency band is different from the first, second, and third frequency bands.

[0065] like Figure 2 Under the structure shown, a test was conducted at one dimension, and the results were as follows. Figure 8 The S-parameters and efficiency test results shown in the figure indicate that, as can be seen from the graph... Figure 2 Under the structure shown, broadband design with WiFi 7 plus UWB can still be achieved based on the tuning circuit M.

[0066] Specifically, referring to curves S1,1, it can be seen that under the adjustment of the tuning circuit M, when the radiator 10 and the parasitic stub 20 jointly support the circulating current mode from the first ground point D1 to the second ground point D2, the antenna device operates in the 4.635GHz resonant frequency band. When the tuning circuit M adjusts the radiator 10 to support the circulating current mode from the first ground point D1 to the feed point K, the antenna device operates in the 5.724GHz resonant frequency band. When the tuning circuit adjusts the radiator 10 and the parasitic stub 20 to jointly support the semi-circular current mode from the first ground point D1 to the second ground point D2, the antenna device operates in the 6.767GHz resonant frequency band. When the tuning circuit adjusts the radiator 10 to support the semi-circular current mode from the first ground point D1 to the feed point K, the antenna device operates in the 8.091GHz resonant frequency band. From the system overall efficiency curve E... T Let's look at (E in the picture) R (See the system efficiency curve). The radiation efficiency is relatively high in the frequency range of 4.5GHz to 9GHz. That is, the antenna device provided in this application embodiment can achieve high-efficiency radiation in a wide frequency band of 4.5GHz to 9GHz, realizing wide bandwidth design and improved communication efficiency. Moreover, even when the radiator 10 and the parasitic branch 20 are LDS antenna radiators 10, it still has high efficiency and ultra-wide bandwidth.

[0067] In addition, after testing, Figure 2 Under this structure, when the antenna device supports the UWB band, its main radiation direction is still not forward, with a forward ratio of more than 50%, which can meet the functional requirements of UWB ranging.

[0068] In one embodiment, such as Figure 8 As shown, there are two parasitic branches 20. One parasitic branch 20 has a coupling end and a first free end. There is a gap between the first end of the radiator 10 and the coupling end of the parasitic branch 20. The second grounding point D2 on this parasitic branch is located at its coupling end. The other parasitic branch 20 has a grounding end and a second free end. There is a gap between the second end of the radiator 10 and the second free end of the parasitic branch 20. The second grounding point D2 on this parasitic branch is located at its grounding end.

[0069] By adding L-shaped parasitic stubs 20 to both sides of the radiator 10, more resonant modes can be obtained, and their superposition principle is the same as in the above embodiment. Figure 1 Structure, and Figure 2The structure is similar; please refer to the above embodiments for details. Figure 1 and Figure 2 We will understand the implementation process of multi-mode resonance under this architecture.

[0070] In one embodiment, the frequency bands formed by the first, second, and third bands cover multiple frequency bands of WiFi 7, as well as at least one UWB band.

[0071] In one embodiment, the frequency bands comprised of the first, second, third, and fourth bands cover multiple frequency bands of WiFi 7, as well as multiple UWB frequency bands.

[0072] The tuning circuit M in various embodiments of this application may include a selection switch and at least one tuning unit with different tuning parameters. By selecting any one of the tuning units through the selection switch, the tuning circuit M can operate in different resonant frequency bands. For example... Figures 10a-10h The diagram shows circuit architecture schematics of tuning units with different tuning parameters in some embodiments of this application. It should be understood that... Figures 10a-10h The two leads for each tuning unit are provided in the diagram and are used to connect to external circuits.

[0073] In one embodiment, such as Figure 10a As shown, the tuning unit may include an inductor L1 and a capacitor C1 connected in series.

[0074] In one embodiment, such as Figure 10b As shown, the tuning unit may include an inductor L1 and a capacitor C1 connected in parallel.

[0075] In one embodiment, such as Figure 10c As shown, the tuning unit may include an inductor L1, a capacitor C1, and a capacitor C2. The inductor L1 and capacitor C1 are connected in parallel, and then connected in series with capacitor C2.

[0076] In one embodiment, such as Figure 10d As shown, the tuning unit may include inductor L1, capacitor C1, capacitor C2, and inductor L2. Inductor L1 and capacitor C1 are connected in parallel and then connected in series with inductor L2.

[0077] In one embodiment, such as Figure 10e As shown, the tuning unit may include an inductor L1, a capacitor C1, and a capacitor C2. The inductor L1 and the capacitor C1 are connected in series, and then connected in parallel with the capacitor C2.

[0078] In one embodiment, such as Figure 10f As shown, the tuning unit may include inductor L1, capacitor C1, and inductor L2. Inductor L1 and capacitor C1 are connected in series and then connected in parallel to inductor L2.

[0079] In one embodiment, such as Figure 10g As shown, the tuning unit may include inductor L1, capacitor C1, capacitor C2, and inductor L2. Inductor L1 and capacitor C1 are connected in parallel to form the first branch, and inductor L2 and capacitor C2 are connected in parallel to form the second branch. The first branch and the second branch are connected in series.

[0080] In one embodiment, such as Figure 10h As shown, the tuning unit may include inductor L1, capacitor C1, capacitor C2, and inductor L2. Inductor L1 and capacitor C1 are connected in series to form a third branch, and inductor L2 and capacitor C2 are connected in series to form a fourth branch. The third and fourth branches are connected in parallel.

[0081] Optionally, the tuning circuit M may include multiple tuning units (including but not limited to the tuning units described in the above embodiments) and a selection switch. Each tuning unit has different tuning parameters, and the selection switch is connected to the feed S1 and each tuning unit respectively. For example, the selection switch includes one terminal and multiple second terminals. The terminal of the selection switch is connected to the feed point K, and the multiple second terminals of the selection switch are connected one-to-one to the terminals of each tuning unit. The second terminal of each tuning unit is connected to the feed S1. The selection switch can selectively conduct feed S1 and any tuning unit, so that the tuning circuit M operates in different resonant frequency bands. It should be noted that the specific distribution location and size of the selection switch and tuning units are not limited; these can be determined according to the design requirements when the antenna device is actually applied to electronic equipment.

[0082] In one embodiment, an electronic device 100 is also provided, including the aforementioned antenna device. The components of the antenna device are explained in the descriptions of the above embodiments and will not be repeated here. The electronic device equipped with the aforementioned antenna device, with its radiator and parasitic branch structure, achieves multiple resonant modes, supports WiFi 7 and UWB bands, and realizes a broadband design.

[0083] In one embodiment, such as Figure 11 As shown, the metal floor is at least a portion of the middle plate 110 and circuit board (not shown) in the electronic device 100.

[0084] The circuit board can be a PCB (Printed Circuit Board) in the electronic device 100 that provides grounding. It can be independently located outside the middle board 110 of the electronic device 100, or it can be located on the middle board 110. Based on the description of the antenna device in the above embodiments, the electronic device 100 equipped with the antenna device can support at least the first frequency band, the second frequency band, and the third frequency band, improving communication performance under limited clearance. For example, when the frequency range formed by the first frequency band, the second frequency band, and the third frequency band covers multiple frequency bands of WiFi 7 and at least one frequency band of UWB, full-band coverage of WiFi 7 and ultra-wideband communication of UWB can be achieved, and communication performance can be effectively improved with miniaturized antenna design.

[0085] In one embodiment, such as Figure 11 As shown, the electronic device 100 includes a middle plate 110 and a frame 120 surrounding the middle plate 110.

[0086] The frame 120 includes a top frame 121, a first side frame 122, a bottom frame 123, and a second side frame 124 connected end to end in sequence; the radiator and the parasitic branch are set on the first side frame 122 or the second side frame 124.

[0087] Optionally, the radiator and parasitic branch can be set on the first side bezel 122, which is the left and / or right bezel when the phone is held in portrait mode and viewed directly from the screen. The radiator and parasitic branch can be set near the top bezel 121 to reduce power loss when holding the phone in portrait mode and ensure communication quality.

[0088] like Figure 12 As shown, further explanation will be given using mobile phone 101 as an example of electronic device 100. Specifically, as follows... Figure 12 As shown, the mobile phone 101 may include a memory 21 (which optionally includes one or more computer-readable storage media), processing circuitry 22, a peripheral device interface 23, a radio frequency system 24, and an input / output (I / O) subsystem 26. These components optionally communicate via one or more communication buses or signal lines 29. Those skilled in the art will understand that... Figure 12 The mobile phone 101 shown does not constitute a limitation on the mobile phone and may include more or fewer components than shown, or combine certain components, or have different component arrangements. Figure 12 The various components shown are implemented in hardware, software, or a combination of both, including one or more signal processing and / or application-specific integrated circuits.

[0089] Memory 21 optionally includes high-speed random access memory, and also optionally includes non-volatile memory, such as one or more disk storage devices, flash memory devices, or other non-volatile solid-state memory devices. Exemplary examples include software components stored in memory 21 such as an operating system 211, a communication module (or instruction set) 212, a global positioning system (GPS) module (or instruction set) 213, etc.

[0090] Processing circuitry 22 and other control circuitry (such as the control circuitry in radio frequency system 24) can be used to control the operation of mobile phone 101. Processing circuitry 22 may include one or more microprocessors, microcontrollers, digital signal processors, baseband processors, power management units, audio codec chips, application-specific integrated circuits, etc.

[0091] The processing circuit 22 can be configured to implement a control algorithm for controlling the use of the antenna in the mobile phone 101. The processing circuit 22 can also issue control commands for controlling various switches and tuning circuits in the radio frequency system 24.

[0092] I / O subsystem 26 couples input / output peripherals on mobile phone 101, such as a keypad and other input control devices, to peripheral interface 23. I / O subsystem 26 optionally includes a touchscreen, buttons, a tone generator, an accelerometer (motion sensor), an ambient light sensor and other sensors, light-emitting diodes and other status indicators, data ports, etc. For example, a user can control the operation of mobile phone 101 by supplying commands via I / O subsystem 26, and can use the output resources of I / O subsystem 26 to receive status information and other outputs from mobile phone 101. For example, a user can press button 261 to turn the phone on or off.

[0093] The radio frequency system 24 may include the antenna device in any of the foregoing embodiments.

[0094] Optionally, the communication control unit can be the processing circuit 22 described above.

[0095] In the description of this specification, references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative descriptions of the above terms do not necessarily refer to the same embodiments or examples.

[0096] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0097] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. An antenna device, characterized in that, include: Metal flooring; Feed source; A radiator having a first grounding point and a feed point connected to the feed source, the radiator being used to couple with the metal ground plane under the excitation of the feed source; The parasitic branch has a second grounding point, and there is a gap between the parasitic branch and the radiator; A tuning circuit is connected to the feed source and the feed point respectively. The tuning circuit is used to support the radiator and the parasitic stub to operate in the first resonant mode to support the first frequency band. The tuning circuit is also used to adjust the radiator to support the second frequency band and the third frequency band, wherein the first frequency band, the second frequency band and the third frequency band are different. The first resonant mode is the mode in which the excitation current provided by the feed source resonates between the first target end and the second target end. The first target end is the end of the radiator that is away from the parasitic branch, and the second target end is the end of the parasitic branch that is away from the radiator. The frequency bands formed by the first, second, and third frequency bands cover multiple frequency bands of WiFi 7, as well as at least one UWB frequency band.

2. The antenna device according to claim 1, characterized in that, The radiator has a first end and a second end, the first grounding point is located at the first end, and the feed point is located at the second end; the tuning circuit is used to support the radiator to operate in a second resonant mode to support the second frequency band, the second resonant mode being a circulating current mode from the first grounding point to the feed point; The tuning circuit is also used to support the radiator to operate in a third resonant mode to support the third frequency band, wherein the third resonant mode is a semi-circular current mode from the first grounding point to the feed point.

3. The antenna device according to claim 2, characterized in that, The parasitic stub has a coupling end and a first free end, and there is a gap between the first end of the radiator and the coupling end of the parasitic stub. The second grounding point is located at the coupling end. The first resonant mode includes a half-circulation mode from the feed point to the first grounding point and a quarter-wavelength mode from the second grounding point to the first free end.

4. The antenna device according to claim 2, characterized in that, The parasitic branch has a grounded end and a second free end, and there is a gap between the second end of the radiator and the second free end of the parasitic branch. The second grounding point is located at the grounded end. The first resonant mode includes a circulation mode from the first grounding point to the second grounding point.

5. The antenna device according to claim 4, characterized in that, The tuning circuit is also used to support the radiator and the parasitic stub working together in a fourth resonant mode to support a fourth frequency band, wherein the fourth resonant mode is a semi-circular current mode from the first ground point to the second ground point. The fourth frequency band is different from the first frequency band, the second frequency band, and the third frequency band.

6. The antenna device according to any one of claims 2-5, characterized in that, There are two parasitic branches, one of which has a coupling end and a first free end. There is a gap between the first end of the radiator and the coupling end of the parasitic branch. The second grounding point of the one of the parasitic branches is located at the coupling end. Another parasitic branch has a grounding end and a second free end, and there is a gap between the second end of the radiator and the second free end of the parasitic branch. The second grounding point of the other parasitic branch is located at the grounding end.

7. The antenna device according to any one of claims 1-5, characterized in that, The frequency band formed by the first frequency band, the second frequency band, and the third frequency band covers at least one of the UWB CH5 and UWB CH9 frequency bands.

8. An electronic device, characterized in that, Includes the antenna device as described in any one of claims 1-7.

9. The electronic device according to claim 8, characterized in that, The metal floor is at least a portion of the middle plate or circuit board in the electronic device.

10. The electronic device according to claim 8, characterized in that, The electronic device includes a top frame, a first side frame, a bottom frame, and a second side frame connected end to end in sequence; the radiator and the parasitic branch are disposed on the first side frame or the second side frame.

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