Electronic device

Abstract

The embodiments of the present application relate to the technical field of communications, and specifically relate to an electronic device. In the electronic device of the embodiments of the present application, a frame antenna is provided on a frame, a first ultra-wideband antenna is provided on a rear cover, and along a direction perpendicular to the length of the frame, a projection of the first ultra-wideband antenna on the frame covers at least part of the frame antenna. Along the direction perpendicular to the length of the frame, the first ultra-wideband antenna and the frame antenna are spaced apart, and the distance between the first ultra-wideband antenna and the frame antenna is less than or equal to 5 mm, so that the first ultra-wideband antenna can couple signals to the frame antenna. The first ultra-wideband antenna couples energy to the frame antenna, thereby enabling the first ultra-wideband antenna and the frame antenna to radiate signals outwards simultaneously, which can improve the system efficiency of the first ultra-wideband antenna and accordingly enhance positioning accuracy.

Description

Electronic device

[0001] The present application claims priority to the Chinese patent application No. 202411049690.X, filed on July 31, 2024, and entitled "Electronic device", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] Embodiments of the present application relate to the field of communication technology, in particular to an electronic device. BACKGROUND

[0003] Electronic devices such as mobile phones, tablets, etc. are generally provided with ultra-wideband antennas (UWB antennas for short). Through the UWB antennas, the electronic devices can realize positioning and other functions. However, the system efficiency of the UWB antennas provided on the electronic devices is low, which affects the positioning accuracy. SUMMARY

[0004] Embodiments of the present application provide an electronic device for improving the system efficiency of the UWB antenna and thus improving the positioning accuracy.

[0005] Embodiments of the present application provide an electronic device, which includes a frame, a back cover, a frame antenna, and a first UWB antenna. The frame encloses a containing space. The back cover covers the frame and is used to enclose the containing space. The frame antenna is arranged on the frame. The first UWB antenna is arranged on the back cover and projects on at least part of the frame antenna in a direction perpendicular to the length of the frame. The first UWB antenna is arranged apart from the frame antenna in the direction perpendicular to the length of the frame, and the distance between the first UWB antenna and the frame antenna is less than or equal to 5 mm. The first UWB antenna is used to couple signals to the frame antenna. The working frequency band of the first UWB antenna is higher than that of the frame antenna.

[0006] Through the above arrangement, the first UWB antenna projects on at least part of the frame antenna in the direction perpendicular to the length of the frame. The first UWB antenna is arranged apart from the frame antenna in the direction perpendicular to the length of the frame, and the distance between the first UWB antenna and the frame antenna is less than or equal to 5 mm. In this way, the first UWB antenna can couple signals to the frame antenna, and the first UWB antenna couples energy to the frame antenna, so that the first UWB antenna and the frame antenna radiate signals outward at the same time. This can improve the system efficiency of the first UWB antenna and thus improve the positioning accuracy.

[0007] In addition, the operating frequency band of the first ultra-wideband antenna can be the first operating frequency band, and the operating frequency band of the frame antenna can be the second operating frequency band. The operating frequency band of the first ultra-wideband antenna is higher than the operating frequency band of the frame antenna. It can be understood that the lowest frequency in the first operating frequency band is greater than the highest frequency in the second operating frequency band. In this way, the first ultra-wideband antenna couples signals to the frame antenna, so that the frame antenna radiates signals of the first operating frequency band outward, and at the same time, the first ultra-wideband antenna also radiates signals of the first operating frequency band outward, thereby improving the system efficiency of the first wideband antenna and improving the positioning accuracy. It can be understood that, since the operating frequency band of the first ultra-wideband antenna is higher than the operating frequency band of the frame antenna, the energy of the frame antenna is difficult to couple into the first ultra-wideband antenna, and therefore the frame antenna will not affect the first ultra-wideband antenna.

[0008] In some embodiments that can include the above-mentioned embodiments, the first operating frequency band is a frequency band covered by a first ultra-wideband antenna base mode, the second operating frequency band is a frequency band covered by a frame antenna base mode, and the first operating frequency band is a frequency band covered by a high-order mode of the frame antenna. In this way, the first ultra-wideband antenna couples signals to the frame antenna, so that the frame antenna excites a high-order mode, and the frame antenna and the first ultra-wideband antenna simultaneously radiate signals of the first operating frequency band outward. When the frame antenna is working, since the frequency is low, the energy of the frame antenna is difficult to couple into the first ultra-wideband antenna, and therefore the frame antenna will not affect the first ultra-wideband antenna.

[0009] In some embodiments that can include the above-mentioned embodiments, the electronic device further includes a first switching device coupled with the frame antenna. The frame antenna includes a first working state and a second working state, and the first switching device is configured to switch the working state of the frame antenna. The working frequency bands corresponding to the first working state and the second working state are different. The first switching device can switch the working state of the frame antenna to adjust the working frequency band of the frame antenna.

[0010] In some embodiments that can include the above-mentioned embodiments, when the frame antenna is in an idle state, the first switching device switches the frame antenna to a switch state corresponding to the first working state. The idle state is a state in which the radio frequency device does not receive and transmit signals through the frame antenna, and can be a state in which the radio frequency device does not transmit and receive signals. At this time, the first switching device switches the frame antenna to the switch state of the first working state and keeps the frame antenna in the switch state of the first working state. In this way, when the frame antenna is switched from the idle state to the working state, the frame antenna can directly enter the first working state, that is, perform signal transmission and reception in the working frequency band corresponding to the first working state, thereby reducing the control time delay and improving the running speed of the electronic device.

[0011] In some embodiments that can include the above embodiments, in the idle state of the frame antenna, the system efficiency of the first ultra-wideband antenna in the switch state corresponding to the first working state is greater than the system efficiency of the first ultra-wideband antenna in the switch state corresponding to the second working state. It can be understood that when the first switching device is in the switch state corresponding to the first working state, the first ultra-wideband antenna couples signals to the frame antenna, so that the first ultra-wideband antenna and the frame antenna radiate signals outward at the same time, and the system efficiency at this time is the first efficiency; when the first switching device is in the switch state corresponding to the second working state, the first ultra-wideband antenna couples signals to the frame antenna, so that the first ultra-wideband antenna and the frame antenna radiate signals outward at the same time, and the system efficiency at this time is the second efficiency, and the first efficiency is greater than the second efficiency. In this way, in the idle state of the frame antenna, the first switching device is switched to the switch state corresponding to the first working state with higher system efficiency of the first ultra-wideband antenna, so that during the idle state of the frame antenna, the first ultra-wideband antenna can directly couple signals to the frame antenna in the switch state corresponding to the first working state, ensuring higher system efficiency.

[0012] In some embodiments that can include the above embodiments, in the working state of the frame antenna, the system efficiency of the first ultra-wideband antenna in the first working state is greater than the system efficiency of the first ultra-wideband antenna in the second working state. That is, in comparison between the first working state and the second working state of the frame antenna, the system efficiency of the first ultra-wideband antenna is not equal, and the system efficiency of the first ultra-wideband antenna is higher when the frame antenna is in the first working state. In some examples, the system efficiency of the first ultra-wideband antenna is higher when the frame antenna is in the first working state; and when the first switching device is switched to the switch state corresponding to the first working state in the idle state of the frame antenna, the system efficiency of the first ultra-wideband antenna is also higher.

[0013] In some embodiments that can include the above embodiments, the frame antenna includes a cellular antenna, and the working frequency band corresponding to the first working state is an N78 frequency band.

[0014] For example, the working frequency band corresponding to the second working state is any one of a B1 frequency band, a B3 frequency band, a B40 frequency band, and a B41 frequency band; or the working frequency band corresponding to the first working state is an N78 frequency band, and the second working state is multiple, wherein the working frequency band corresponding to one of the second working states is a B1 frequency band, the working frequency band corresponding to one of the second working states is a B3 frequency band, the working frequency band corresponding to one of the second working states is a B40 frequency band, and the working frequency band corresponding to one of the second working states is a B41 frequency band. The first switching device can switch the frame antenna to the first working state or one of the multiple second working states.

[0015] In some embodiments that can include the above-mentioned embodiments, the working frequency band corresponding to the first working state is any one of the B1 frequency band, the B3 frequency band, the B40 frequency band, and the B41 frequency band.

[0016] For example, the working frequency band corresponding to the second working state can be any one of the B1 frequency band, the B3 frequency band, the B40 frequency band, the B41 frequency band, or the N78 frequency band, except for the frequency band corresponding to the first working state. The first switching device can switch the working state of the frame antenna, so that the working state of the frame antenna is the first working state or the second working state.

[0017] In some embodiments that can include the above-mentioned embodiments, the frame antenna includes a cellular antenna, and / or a wireless network antenna, and / or a Bluetooth antenna.

[0018] In some implementations, the frame antenna can include a cellular antenna to perform cellular communication through the frame antenna. In some implementations, the frame antenna can include a wireless network antenna to perform Wi-Fi communication through the wireless network antenna. In some implementations, the frame antenna can include a cellular antenna and a wireless network antenna, that is, the cellular antenna and the wireless network antenna are arranged in one body, for example, in the implementation in which part of the frame serves as the frame antenna, the radiator of the cellular antenna and the radiator of the wireless network antenna can share part of the frame, that is, the same part of the frame simultaneously serves as at least part of the cellular antenna radiator and at least part of the wireless network antenna radiator, so as to improve the utilization of the frame and the structural compactness of the electronic device. In some implementations, the frame antenna can also include a Bluetooth antenna to perform Bluetooth communication through the Bluetooth antenna. In some implementations, the frame antenna can include at least two of the cellular antenna, the wireless network antenna, and the Bluetooth antenna.

[0019] In some embodiments that can include the above-mentioned embodiments, the electronic device further includes a second ultra-wideband antenna, a control device, and a second switching device. The second ultra-wideband antenna is arranged on the frame, and the second ultra-wideband antenna is arranged at a distance from the frame antenna. The working frequency band of the second ultra-wideband antenna is the same as that of the first ultra-wideband antenna. The control device is coupled to the first ultra-wideband antenna and the second ultra-wideband antenna through the second switching device. In the first switching state, the second switching device is controlled by the control device to make the first ultra-wideband antenna in the working state and the second ultra-wideband antenna in the idle state. In the second switching state, the second switching device is controlled by the control device to make the first ultra-wideband antenna in the idle state and the second ultra-wideband antenna in the working state.

[0020] Through the above arrangement, the control device can select the first ultra-wideband antenna or the second ultra-wideband antenna to be in the working state, that is, the control device can select the first ultra-wideband antenna or the second ultra-wideband antenna to perform positioning.

[0021] In some implementations, the first UWB antenna and the second UWB antenna are located at different positions, and the uplink signal and the downlink signal of the first UWB antenna and the second UWB antenna at the same time can be different. In this case, the control device can be used to control the UWB antenna with stronger downlink signal to be in the working state, that is, the UWB antenna with stronger downlink signal is used for positioning, so as to improve the communication quality and the positioning accuracy.

[0022] In some embodiments that can include the above-mentioned embodiments, the control device includes a transmitting port and a receiving port, and the transmitting port and the receiving port work alternately. In the first switching state, the second switching device makes the receiving port and the transmitting port work in coupling with the first UWB antenna. In the second switching state, the second switching device makes the receiving port and the transmitting port work in coupling with the second UWB antenna.

[0023] In some embodiments that can include the above-mentioned embodiments, the electronic device further includes a mainboard, and the mainboard is arranged in the accommodating space and is arranged in parallel with the back cover. The mainboard and the first UWB antenna are coupled through a capacitive structure. In this way, the mainboard can couple signals to the first UWB antenna through the capacitive structure, and the impedance matching of the first UWB antenna can also be realized through the capacitive structure.

[0024] For example, the capacitive structure can include a lumped capacitor, that is, the capacitive structure can include a capacitive element, which can be arranged on the mainboard. Of course, the capacitive element can also be arranged between the mainboard and the first UWB antenna. Alternatively, the capacitive structure includes a distributed capacitor, that is, an equivalent capacitor formed by two conductive parts with a certain gap between the mainboard and the first UWB antenna.

[0025] In some embodiments that can include the above-mentioned embodiments, the capacitive structure includes a feeding plate and a feeding point located on the first UWB antenna, and the feeding plate is arranged on the mainboard and is spaced apart from the feeding point. In this way, the capacitive structure is simple and easy to manufacture. It can be understood that by reasonably setting the thickness of the feeding plate, the distance between the feeding plate and the feeding point can be adjusted, and the capacitance value of the capacitive structure can be adjusted to realize the impedance matching of the first UWB antenna.

[0026] In some embodiments that can include the above-mentioned embodiments, a shielding cover is arranged on the mainboard, and the shortest distance between the first UWB antenna and the shielding cover is 1.5-2 mm (such as 1.5 mm, 1.7 mm, 2 mm, etc.). In this way, the shielding cover can avoid affecting the working of the first UWB antenna, while ensuring the compactness of the electronic device and reducing the size of the electronic device. BRIEF DESCRIPTION OF DRAWINGS

[0027] FIG. 1 is a structural schematic diagram of an electronic device according to an embodiment of the present application;

[0028] Fig. 2 is a structural schematic diagram of an electronic device according to an embodiment of the present application;

[0029] Fig. 3 is a structural schematic diagram of a frame and a back cover of an electronic device according to an embodiment of the present application;

[0030] Fig. 4 is a cross-sectional view of an electronic device according to an embodiment of the present application;

[0031] Fig. 5 is a cross-sectional view of an electronic device according to an embodiment of the present application;

[0032] Fig. 6 is a structural schematic diagram of a frame and a back cover of an electronic device according to an embodiment of the present application;

[0033] Fig. 7 is a structural schematic diagram of a frame and a back cover of an electronic device according to an embodiment of the present application;

[0034] Fig. 8 is a structural schematic diagram of an electronic device according to an embodiment of the present application;

[0035] Fig. 9 is a structural schematic diagram of a frame and a back cover of an electronic device according to an embodiment of the present application;

[0036] Fig. 10 is a connection schematic diagram of a signal transmission and reception when a second switching device is in a first switching state;

[0037] Fig. 11 is a connection schematic diagram of a signal transmission and reception when a second switching device is in a second switching state.

[0038] Legend: 10: frame antenna; 20: first ultra-wideband antenna; 30: second ultra-wideband antenna; 40: control device; 50: second switching device; 60: filter; 100: middle frame; 101: first middle frame; 102: second middle frame; 110: middle plate; 120: frame; 121: first frame; 122: second frame; 123: first section; 124: second section; 130: accommodating space; 200: display panel; 300: back cover; 310: first back cover; 320: second back cover; 400: mainboard; 500: hinge structure. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application.

[0040] Hereinafter, the terms "first", "second", and the like are only used for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second", and the like can explicitly or implicitly include one or more of the features.

[0041] In addition, in the embodiments of the present application, the orientation terms such as "upper", "lower", "left", "right", "horizontal" and "vertical" are defined relative to the orientation in which the components in the drawings are shown, and it should be understood that these directional terms are relative concepts, which are used for relative description and clarification, and can change accordingly according to the change of the orientation in which the components in the drawings are shown.

[0042] In the following, the terms that can appear in the embodiments of the present application are explained.

[0043] Connection / connection: should be understood in a broad sense. For example, "connection" can be fixed connection, electrical connection, or detachable connection, or integral; can be directly connected, or indirectly connected through an intermediate medium.

[0044] Coupling: can be understood as direct coupling and / or indirect coupling. Direct coupling can also be referred to as "electrical connection", which is understood as physical contact and electrical conduction of components; it can also be understood as the form of connection between different components in the circuit structure through the entity circuit of the copper foil or wire of the printed circuit board (PCB) that can transmit electrical signals; "indirect coupling" can be understood as electrical conduction through space / non-contact between two conductors. In an embodiment, indirect coupling can also be referred to as capacitive coupling, for example, through the coupling between the gap between two conductive parts to form an equivalent capacitor to realize signal transmission.

[0045] Lumped element / device: refers to the collective name of elements whose size is much smaller than the relative wavelength of the circuit operating frequency. For signals, at any time, the characteristics of the element always remain fixed and are independent of the frequency.

[0046] Distributed element / device: unlike lumped elements, if the size of the element is similar to or larger than the relative wavelength of the circuit operating frequency, then when the signal passes through the element, the characteristics of each point in the element will be different due to the change of the signal, and at this time the element as a whole cannot be regarded as a single body with fixed characteristics, but should be called a distributed element.

[0047] Capacitance / capacitive structure: can be understood as lumped capacitance and / or distributed capacitance. Lumped capacitance refers to capacitive components, such as capacitive elements; distributed capacitance (or distributed capacitance) refers to the equivalent capacitance formed by the gap between two conductive parts.

[0048] Inductance / inductive structure: can be understood as lumped inductance and / or distributed inductance. Lumped inductance refers to inductive components, such as inductive elements; distributed inductance (or distributed inductance) refers to the equivalent inductance formed by a certain length of conductive part, such as the equivalent inductance formed by the curling or rotation of the conductor.

[0049] Radiating element, or antenna element: a device in an antenna for receiving / transmitting electromagnetic wave radiation. In some cases, "antenna" is understood in a narrow sense as a radiating element, which converts guided wave energy from a transmitter into radio waves, or converts radio waves into guided wave energy for radiation and reception of radio waves. The modulated high frequency current energy (or guided wave energy) generated by the transmitter is delivered to the transmitting radiating element via feed lines, which converts it into some polarized electromagnetic wave energy and radiates it in the desired direction. The receiving radiating element converts the electromagnetic wave energy from a certain polarization in a certain direction into modulated high frequency current energy, which is delivered to the input terminal of the receiver via the feed line.

[0050] The radiating element (or antenna element) can include a conductor with a certain shape and size, such as a wire, or a patch, etc., which is not limited in the specific shape. In an embodiment, the wire radiating element can be referred to as a wire antenna. In an embodiment, the wire radiating element can be implemented by a conductive frame, which can also be referred to as a frame antenna. In an embodiment, the wire radiating element can be implemented by a support conductor, which can also be referred to as a support antenna. In an embodiment, the wire radiating element, or the wire antenna, has a wire diameter (e.g., including thickness and width) much smaller than the wavelength (e.g., dielectric wavelength) (e.g., less than 1 / 16 of the wavelength), and the length can be comparable to the wavelength (e.g., dielectric wavelength) (e.g., the length is around 1 / 8 of the wavelength, or 1 / 8 to 1 / 4, or 1 / 4 to 1 / 2, or longer). The main forms of wire antennas include dipole antennas, half-wave dipole antennas, monopole antennas, loop antennas, inverted F antennas (also referred to as IFA, Inverted F Antenna). For example, for a dipole antenna, each dipole antenna generally includes two radiating elements, each of which is fed by a feed from the feed end of the radiating element. For example, the inverted F antenna (Inverted-F Antenna, IFA) can be regarded as an inverted F antenna obtained by adding a ground path to a monopole antenna. The IFA antenna has a feed point and a ground point, and is called an inverted F antenna because its side view is in the shape of an inverted F. In an embodiment, the patch radiating element can include a microstrip antenna, or a patch antenna, such as a planar inverted F antenna (also referred to as PIFA, Planar Inverted F Antenna). In an embodiment, the patch radiating element can be implemented by a planar conductor (e.g., a conductive patch or a conductive coating, etc.). In an embodiment, the patch radiating element can include a conductive patch, such as a copper patch, etc. In an embodiment, the patch radiating element can include a conductive coating, such as silver paste, etc. The shape of the patch radiating element includes a circle, a rectangle, a ring, etc., which is not limited in the specific shape. The structure of the microstrip antenna is generally composed of a dielectric substrate, a radiating element, and a ground plate, wherein the dielectric substrate is arranged between the radiating element and the ground plate.

[0051] The radiators (or antenna elements) can also include slots or gaps formed on the conductors, e.g., closed or semi-closed slots or gaps formed on the grounded conductor plane. In one embodiment, the slotted or gapped radiators can be referred to as slot antennas or gap antennas. In one embodiment, the slots or gaps of the slot antennas / gap antennas have a radial dimension (e.g., including width) much smaller than the wavelength (e.g., dielectric wavelength) (e.g., less than 1 / 16 of the wavelength), and a length dimension comparable to the wavelength (e.g., dielectric wavelength) (e.g., around 1 / 8 of the wavelength, or 1 / 8 to 1 / 4, or 1 / 4 to 1 / 2, or longer). In one embodiment, the radiators with closed slots or gaps can be referred to as closed slot antennas. In one embodiment, the radiators with semi-closed slots or gaps (e.g., with openings added to the closed slots or gaps) can be referred to as open slot antennas. In some embodiments, the gap shape is long and thin. In some embodiments, the gap length is about half a wavelength (e.g., dielectric wavelength). In some embodiments, the gap length is about an integer number of wavelengths (e.g., one dielectric wavelength). In some embodiments, the gap can be fed by a transmission line bridging one or both sides of the gap, whereby an RF electromagnetic field is excited on the gap and electromagnetic waves are radiated into space. In one embodiment, the radiators of the slot antennas or gap antennas can be implemented by conductive frames grounded at both ends, which can also be referred to as frame antennas; in this embodiment, the slot antennas or gap antennas can be considered to include linear radiators spaced apart from the ground plane and grounded at both ends, thereby forming closed or semi-closed slots or gaps. In one embodiment, the radiators of the slot antennas or gap antennas can be implemented by bracket conductors grounded at both ends, which can also be referred to as bracket antennas.

[0052] The feed circuit / structure is a combination of all components of an antenna for the purpose of reception and transmission of RF waves. In the case of a receiving antenna, the feed circuit can be considered as the antenna part from the first amplifier to the front-end transmitter. In a transmitting antenna, the feed circuit can be considered as the part after the last power amplifier. In some cases, the "feed circuit" is understood in a narrow sense as the RF chip, or the transmission path including the RF chip to the feed point on the radiator or transmission line. The feed circuit has the function of converting radio waves into electrical signals and sending them to the receiver components. In general, it is considered as part of the antenna for converting radio waves into electrical signals and vice versa. The antenna design should take into account the maximum power transmission possibility and efficiency. To this end, the antenna feed impedance must be matched to the load resistance. The antenna feed impedance is a combination of resistance, capacitance and inductance. To ensure maximum power transmission conditions, the two impedances (load resistance and feed impedance) should be matched. The matching can be done by considering the frequency requirements and design parameters of the antenna (such as gain, directivity and radiation efficiency).

[0053] Feed line, also called transmission line, refers to the connection line between the transceiver and the radiator of the antenna. Transmission line can directly transmit current wave or electromagnetic wave according to different frequencies and forms. The connection between the radiator and the transmission line is usually called the feed point. Transmission line includes wire transmission line, coaxial transmission line, waveguide, or microstrip line, etc. Transmission line can include support antenna body or glass antenna body according to different implementation forms. Transmission line can be realized by LCP (Liquid Crystal Polymer), FPC (Flexible Printed Circuit), or PCB (Printed Circuit Board) according to different carriers.

[0054] Resonant frequency: Resonant frequency is also called resonance frequency. Resonant frequency can have a frequency range, i.e. the frequency range of resonance. The resonant frequency can be the frequency range in which the return loss characteristic is less than -6dB. The frequency corresponding to the strongest resonance point is the center frequency point frequency. The return loss characteristic of the center frequency can be less than -20dB.

[0055] Resonant frequency band: The range of resonant frequency is the resonant frequency band, and the return loss characteristic of any frequency point in the resonant frequency band can be less than -6dB or -5dB.

[0056] Communication frequency band / working frequency band: Regardless of the type of antenna, it always works in a certain frequency range (bandwidth). For example, an antenna supporting B40 frequency band has a working frequency band including the frequency in the range of 2300MHz-2400MHz, or in other words, the working frequency band of the antenna includes B40 frequency band. The frequency range that meets the index requirements can be regarded as the working frequency band of the antenna. The width of the working frequency band is called the working bandwidth. The working bandwidth of an omnidirectional antenna can reach 3-5% of the center frequency. The working bandwidth of a directional antenna can reach 5-10% of the center frequency. The bandwidth can be considered as a range of frequencies on both sides of the center frequency (for example, the resonant frequency of a dipole), in which the antenna characteristics are within the acceptable value range of the center frequency.

[0057] The resonant frequency band and the working frequency band can be the same or partially overlap. In one embodiment, one or more resonant frequency bands of an antenna can cover one or more working frequency bands of the antenna.

[0058] End / point: the "end / point" in the first end / second end / feed end / ground end / feed point / ground point / connection point of the antenna radiator, cannot be understood as a point or end physically disconnected from other radiators, but can also be considered as a certain point or section on a continuous radiator. In an embodiment, the "end / point" can include a connection / coupling area on the antenna radiator that is coupled to other conductive structures, for example, the feed end / feed point can be a coupling area (for example, an area facing a part of the feed circuit) on the antenna radiator that is coupled to a feed structure or a feed circuit, and for another example, the ground end / ground point can be a connection / coupling area on the antenna radiator that is coupled to a ground structure or a ground circuit.

[0059] The intermediate or intermediate position and the like mentioned in the embodiments of the present application are all ranges. For example, the intermediate (position) of the conductor can be a conductor portion including a midpoint on the conductor, or a conductor portion of one-eighth wavelength including the midpoint, where the wavelength can be a wavelength corresponding to the working frequency band of the antenna, a wavelength corresponding to the center frequency of the working frequency band, or a wavelength corresponding to a resonance point. For another example, the intermediate (position) of the conductor can be a conductor portion on the conductor that is less than a predetermined threshold (for example, 1 mm, 2 mm, or 2.5 mm) from the midpoint. The intermediate position of the slot or the intermediate position of one side of the slot refers to the intermediate position of one side of the slot.

[0060] The co-linear, co-axial, co-planar, symmetric (for example, axisymmetric or central symmetric), parallel, perpendicular, same (for example, same length, same width, and the like) and the like mentioned in the embodiments of the present application are all with respect to the current process level, rather than the absolute strict definition in the mathematical sense. The edges of two radiating branches or two antenna units that are co-linear can have a deviation in the line width direction that is less than a predetermined threshold (for example, 1 mm, 0.5 m, or 0.1 mm). The edges of two radiating branches or two antenna units that are co-planar can have a deviation in a direction perpendicular to the co-planar plane that is less than a predetermined threshold. Two antenna units that are parallel or perpendicular to each other can have a deviation in a predetermined angle. In an embodiment, the predetermined threshold can be less than or equal to a threshold of 1 mm, for example, the predetermined threshold can be 0.5 mm, or can be 0.1 mm. In an embodiment, the predetermined angle can be an angle within a range of ±10°, for example, the predetermined angle deviation is ±5°.

[0061] Antenna gain: used to characterize the degree of concentration of input power radiated by an antenna. Generally, the narrower the main lobe and the smaller the side lobe of the antenna pattern, the higher the antenna gain.

[0062] System efficiency (antenna efficiency): refers to the ratio of the power radiated by the antenna into space (i.e., the power effectively converted into electromagnetic waves) to the input power of the antenna. The system efficiency is the actual efficiency after considering the antenna port matching, i.e., the system efficiency of the antenna is the actual efficiency (i.e., efficiency) of the antenna.

[0063] Radiation efficiency: refers to the ratio of the power radiated by the antenna into space (i.e., the power effectively converted into electromagnetic waves) to the active power input into the antenna. Among them, the active power input into the antenna = the input power of the antenna - the loss power; the loss power mainly includes the return loss power and the ohmic loss power of the metal and / or the dielectric loss power. The metal loss and the dielectric loss are both factors affecting the radiation efficiency.

[0064] As can be understood by those skilled in the art, efficiency is generally expressed in percentage, and there is a corresponding conversion relationship between efficiency and dB. The closer the efficiency is to 0dB, the better the efficiency of the antenna is represented.

[0065] dB: is decibel, which is a logarithmic concept with base 10. Decibel is only used to evaluate the ratio between one physical quantity and another physical quantity, and it itself has no physical dimension. The ratio between two quantities increases by 10 times, and their difference can be expressed as 10 decibels. For example: A = "100", B = "10", C = "5", D = "1", then A / D = 20dB; B / D = 10dB; C / D = 7dB; B / C = 3dB. That is, a difference of 10 decibels between two quantities is a difference of 10 times, a difference of 20 decibels is a difference of 100 times, and so on. A difference of 3dB is a difference of 2 times between two quantities.

[0066] dBi: generally mentioned together with dBd. dBi and dBd are units of power gain, both of which are relative values, but the reference bases are different. The reference base of dBi is omnidirectional antenna; the reference base of dBd is dipole. It is generally believed that dBi and dBd represent the same gain, and the value represented by dBi is 2.15dBi larger than that represented by dBd. For example: for an antenna with a gain of 16dBd, its gain converted into dBi is 18.15dBi, generally ignoring the decimal place, it is 18dBi.

[0067] The electronic device provided in the embodiments of the present application can include a mobile phone, a tablet computer, a remote information processor, and the like. Referring to FIG. 1, the electronic device includes a middle frame 100, a display panel 200, and a back cover 300. The middle frame 100 includes a middle plate 110 and a frame 120. The frame 120 surrounds a containing space 130. The middle plate 110 is arranged in the containing space 130. The display panel 200 covers one side of the frame 120. The back cover 300 covers the other side of the frame 120. The containing space 130 can be enclosed by the display panel 200 and the back cover 300.

[0068] In the above embodiment, the electronic device further includes a mainboard 400 and a battery (not shown), both of which are arranged in the accommodation space 130, the mainboard 400 can be arranged on the middle plate 110, the middle plate 110 can be substantially parallel to the display panel 200 and the back cover 300, the mainboard 400 can be arranged between the middle plate 110 and the display panel 200, of course, the mainboard 400 can also be arranged between the middle plate 110 and the back cover 300, the present application embodiment does not limit this. The battery is arranged between the middle plate 110 and the back cover 300, and the battery is connected with the mainboard 400 to supply power to the mainboard 400.

[0069] In some embodiments, the electronic device can include a non-foldable electronic device (such as a straight phone as shown in FIG. 1), of course, the electronic device can also be a foldable electronic device (such as a folding phone), as shown in FIG. 2, in the implementation manner in which the electronic device includes a foldable electronic device, correspondingly, the middle frame 100 includes a first middle frame 101 and a second middle frame 102, the first middle frame 101 includes a first side frame 121 and a first middle plate, and the second middle frame 102 includes a second side frame 122 and a second middle plate, the first middle frame 101 surrounds a first accommodation space, the first middle plate is arranged in the first accommodation space, the second side frame 122 surrounds a second accommodation space, and the second middle plate is arranged in the second accommodation space. The display panel 200 covers one end of the first side frame 121 and the second side frame 122, the back cover 300 includes a first back cover 310 and a second back cover 320, the first back cover 310 covers the other end of the first side frame 121 to close the first accommodation space; and the second back cover 320 covers the other end of the second side frame 122 to close the second accommodation space. The mainboard 400 can be arranged in the first accommodation space, of course, the mainboard 400 can also be arranged in the second accommodation space, and the battery can be arranged in the first accommodation space, of course, the battery can also be arranged in the second accommodation space. The electronic device further includes a hinge structure 500, the first middle frame 101 and the second middle frame 102 are connected through the hinge structure 500, the hinge structure 500 allows the first middle frame 101 to be folded relative to the second middle frame 102, so that the foldable electronic device is in a folded state or an unfolded state, when the electronic device is in the folded state, the first middle frame 101 and the second middle frame 102 are folded together, and when the electronic device is in the unfolded state, the first middle frame 101 and the second middle frame 102 are substantially 180°.

[0070] Please refer to FIG. 3, in the embodiment of the present application, the electronic device further comprises a frame antenna 10, the frame antenna 10 is arranged on the frame 120. It can be understood that the frame antenna 10 can be integrated with the frame 120, that is, part of the frame 120 serves as the radiator of the frame antenna 10. Of course, the frame antenna 10 can also be connected with the frame 120 by means of patching, bonding and the like, and the embodiment of the present application does not limit this.

[0071] The present application does not limit the type of frame antenna 10, in some implementations, the frame antenna 10 can include a cellular antenna to perform cellular communication through the frame antenna 10. In some implementations, the frame antenna 10 can include a wireless network antenna (Wireless Fidelity, referred to as Wi-Fi antenna) to perform Wi-Fi communication through the wireless network antenna. In some implementations, the frame antenna 10 can include a cellular antenna and a wireless network antenna, that is, the cellular antenna and the wireless network antenna are arranged in one body, for example, in the implementation in which part of the frame 120 serves as the frame antenna 10, the radiators of the cellular antenna and the wireless network antenna can share part of the frame 120, that is, the same part of the frame 120 simultaneously serves as at least part of the cellular antenna radiator and at least part of the wireless network antenna radiator, to improve the utilization rate of the frame 120 and the structural compactness of the electronic device. In some implementations, the frame antenna 10 can also include a Bluetooth antenna (Bluetooth, referred to as BT antenna) to perform Bluetooth communication through the Bluetooth antenna. In some implementations, the frame antenna 10 can include at least two of the cellular antenna, the wireless network antenna and the Bluetooth antenna, and the embodiment of the present application does not limit this.

[0072] Continuing to refer to FIG. 3, the electronic device in the embodiment of the present application further comprises a first ultra-wideband antenna 20 (Ultra Wide Band, referred to as UWB antenna), the first ultra-wideband antenna 20 communicates by using wireless carrier technology to realize positioning function. For example, the electronic device can communicate with the vehicle through the first ultra-wideband antenna 20 to realize keyless entry, automatic locking and the like. It can be understood that the keyless entry function can be that when the user carries the electronic device close to the vehicle, the first ultra-wideband antenna 20 communicates with the vehicle to determine the position and distance of the user, and the vehicle is automatically unlocked when the user is close to the vehicle; the automatic locking function can be that when the user carries the electronic device away from the vehicle, the first ultra-wideband antenna 20 communicates with the vehicle to determine the position and distance of the user, and the vehicle is automatically locked when the user is far away from the vehicle.

[0073] With reference to FIGS. 1 and 3, in the above implementation, the first ultra-wideband antenna 20 is disposed on the back cover 300, and the radiator of the first ultra-wideband antenna 20 can be attached to the back cover 300 of the electronic device. It should be understood that the radiator is attached to the insulating part of the back cover 300 of the electronic device.

[0074] The radiator attached to the back cover 300 of the electronic device can be understood as that the radiator is located on the surface of the back cover 300, or is disposed on the surface of the back cover 300 through other structural members, or is embedded in the back cover 300. Alternatively, the radiator attached to the back cover 300 of the electronic device can also be understood as that the radiator is disposed adjacent to the back cover 300 in the electronic device. The "adjacent" can be understood as, for example, the distance between the second radiator and the back cover 300 is within 3 mm, or the distance between the radiator and the back cover 300 is within 2 mm or 1 mm. In an embodiment, the radiator can be located on one side of the plane on which the back cover 300 is located.

[0075] In an embodiment, the radiator can be located on the inner side of the back cover 300 (close to the side of the mainboard 400). For example, the radiator can be located between the back cover 300 and the mainboard 400. In some implementations, the electronic device can further include a bracket, and the radiator is located on the bracket.

[0076] It should be understood that when the radiator is located on the inner side of the electronic device, since the radiator is not located on the appearance surface of the electronic device, the layout is more flexible.

[0077] In an embodiment, the radiator can be located on the outer side of the back cover 300 (away from the side of the mainboard 400). In an embodiment, the radiator can be a deco of the camera module of the electronic device, which can be located on the outer surface of the camera module and surround the camera module.

[0078] It should be understood that when the radiator is disposed on the outer side of the electronic device, the radiation environment of the first ultra-wideband antenna 20 is better (for example, the clearance is larger, and the distance from the electronic elements disposed on the mainboard 400 is farther), and the first ultra-wideband antenna 20 has better radiation characteristics (for example, radiation efficiency).

[0079] With reference to FIGS. 1 and 3, in some embodiments, the main board 400 and the first UWB antenna 20 are coupled through a capacitive structure, so that the main board 400 can couple signals to the first UWB antenna 20 through the capacitive structure, and meanwhile, impedance matching of the first UWB antenna 20 can also be achieved through the capacitive structure. For example, the capacitive structure can include lumped capacitance, i.e., the capacitive structure can include a capacitive element, which can be arranged on the main board 400, and of course, the capacitive element can also be arranged between the main board 400 and the first UWB antenna 20. Alternatively, the capacitive structure includes distributed capacitance, i.e., the equivalent capacitance formed by the gap between two conductive parts between the main board 400 and the first UWB antenna 20.

[0080] In the implementation where the capacitive structure includes distributed capacitance, the capacitive structure can include a feeding plate and a feeding point on the first UWB antenna 20, the feeding plate is arranged on the main board 400, and the feeding plate is arranged apart from the feeding point to form the equivalent capacitance. In this way, the capacitive structure is simple and easy to manufacture. It can be understood that by reasonably setting the thickness of the feeding plate, the distance between the feeding plate and the feeding point can be adjusted, and thus the capacitance value of the capacitive structure can be adjusted to perform impedance matching of the first UWB antenna 20.

[0081] In some embodiments, a shielding cover is arranged on the main board 400, the shielding cover covers one or more electronic devices on the main board 400, and the shielding cover is grounded to prevent external electromagnetic signals from affecting the operation of the electronic devices. At this time, the shortest distance between the first UWB antenna 20 and the shielding cover is 1.5mm-2mm (such as 1.5mm, 1.7mm, 2mm, etc.), so as to avoid the shielding cover from affecting the operation of the first UWB antenna 20 while ensuring the compactness of the electronic device and reducing the size of the electronic device.

[0082] In the embodiments of the present application, the projection of the first UWB antenna 20 on the frame 120 covers at least part of the frame antenna 10 in the direction perpendicular to the length of the frame 120, i.e., the direction perpendicular to the X axis in FIGS. 1 and 3.

[0083] It can be understood that, in some embodiments, as shown in FIG. 4, the distance from the first ultra-wideband antenna 20 to the display panel 200 is less than the distance from the end of the bezel antenna 10 away from the display panel 200 to the display panel 200; accordingly, the direction perpendicular to the length of the bezel 120 can be the Y direction, the first ultra-wideband antenna 20 is projected onto the bezel 120 where the bezel antenna 10 is located along the Y direction, and the projection of the first ultra-wideband antenna 20 covers at least part of the bezel antenna 10. As shown in FIG. 5, in other embodiments, the edge of the back cover 300 can have a certain curvature, so that the planar part of the back cover 300 is farther away from the display panel 200, at this time, the distance from the first ultra-wideband antenna 20 provided on the back cover 300 to the display panel 200 increases, and the distance from the first ultra-wideband antenna 20 to the display panel 200 is greater than the distance from the end of the bezel antenna 10 away from the display panel 200 to the display panel 200; accordingly, the direction perpendicular to the length of the bezel 120 can be the M direction which is perpendicular to the X direction and has a certain angle with the Y direction, the first ultra-wideband antenna 20 is projected onto the bezel 120 where the bezel antenna 10 is located along the Y direction, and the projection of the first ultra-wideband antenna 20 covers at least part of the bezel antenna 10.

[0084] In the above implementation, along the direction perpendicular to the length of the bezel 120, the first ultra-wideband antenna 20 is spaced apart from the bezel antenna 10, and the distance between the first ultra-wideband antenna 20 and the bezel antenna 10 is less than or equal to 5 mm, that is, the distance between the first ultra-wideband antenna 20 and the bezel antenna 10 is greater than 0 mm and less than or equal to 5 mm (such as 1 mm, 3.5 mm, 5 mm, etc.), so that the first ultra-wideband antenna 20 can couple signals to the bezel antenna 10, the first ultra-wideband antenna 20 couples energy to the bezel antenna 10, and then the first ultra-wideband antenna 20 and the bezel antenna 10 simultaneously radiate signals outward, which can improve the system efficiency of the first ultra-wideband antenna 20, and then the positioning accuracy can be improved. The distance between the first ultra-wideband antenna 20 and the bezel antenna 10 can be the shortest distance between the first ultra-wideband antenna 20 and the bezel antenna 10 along the direction perpendicular to the length of the bezel 120.

[0085] Please refer to Fig. 6, in some embodiments, the frame 120 comprises a first section 123 and a second section 124 with a certain included angle (e.g. about 90°), and the frame antenna 10 can be located at the included angle between the first section 123 and the second section 124, that is, the part of the first section 123 at the included angle and the part of the second section 124 at the included angle jointly serve as the radiator of the frame antenna 10. Correspondingly, for the first section 123, the direction perpendicular to the length of the frame 120 is the Y direction, and for the second section 124, the direction perpendicular to the length of the frame 120 can be the X direction; at this time, the projection of the first ultra-wideband antenna 20 on the first section 123 covers at least part of the radiator on the first section 123 (as shown in Fig. 6), or the projection of the first ultra-wideband antenna 20 on the second section 124 covers at least part of the radiator on the second section 124 (as shown in Fig. 7), both of which can enable the first ultra-wideband antenna 20 to couple signals to the frame antenna 10.

[0086] It can be understood that when the projection of the first ultra-wideband antenna 20 on the first section 123 covers at least part of the radiator on the first section 123, the first ultra-wideband antenna 20 is spaced apart from the frame antenna 10 along the Y direction, and the distance between the first ultra-wideband antenna 20 and the frame antenna 10 is less than or equal to 5 mm; when the projection of the first ultra-wideband antenna 20 on the second section 124 covers at least part of the radiator on the second section 124, the first ultra-wideband antenna 20 is spaced apart from the frame antenna 10 along the X direction, and the distance between the first ultra-wideband antenna 20 and the frame antenna 10 is less than or equal to 5 mm.

[0087] Continuing to refer to Fig. 3, in the embodiments of the present application, the working frequency band of the first ultra-wideband antenna 20 can be a first working frequency band, the working frequency band of the frame antenna 10 can be a second working frequency band, and the working frequency band of the first ultra-wideband antenna 20 is different from the working frequency band of the frame antenna 10, which can be understood as that the first working frequency band does not overlap with the second working frequency band. For example, the working frequency band of the first ultra-wideband antenna 20 can be greater than the working frequency band of the frame antenna 10, which can be understood as that the lowest frequency in the first working frequency band is greater than the highest frequency in the second working frequency band.

[0088] In this way, the first ultra-wideband antenna 20 couples signals to the frame antenna 10, so that the frame antenna 10 radiates signals of the first working frequency band outward, while the first ultra-wideband antenna 20 also radiates signals of the first working frequency band outward, thereby improving the system efficiency of the first ultra-wideband antenna and improving the positioning accuracy. It can be understood that since the working frequency band of the first ultra-wideband antenna 20 is higher than the working frequency band of the frame antenna 10, the energy of the frame antenna 10 is difficult to couple into the first ultra-wideband antenna 20, and therefore the frame antenna 10 will not affect the first ultra-wideband antenna 20.

[0089] In some embodiments, the first operating frequency band is a frequency band covered by the first UWB antenna 20 base mode, the second operating frequency band is a frequency band covered by the frame antenna 10 base mode, and the first operating frequency band is a frequency band covered by the frame antenna 10 high-order mode. In this way, the first UWB antenna 20 couples signals to the frame antenna 10, so that the frame antenna 10 excites high-order modes, and the frame antenna 10 and the first UWB antenna 20 simultaneously radiate signals of the first operating frequency band; and when the frame antenna 10 works, due to the lower frequency, the energy of the frame antenna 10 is difficult to couple into the first UWB antenna 20, so the frame antenna 10 will not affect the first UWB antenna 20.

[0090] In the embodiments of the present application, the electronic device further includes a first switching device, the first switching device is coupled with the frame antenna 10, the frame antenna 10 includes a first working state and a second working state, the working frequency bands corresponding to the first working state and the second working state are different, and the first switching device can switch the working state of the frame antenna 10 to adjust the working frequency band of the frame antenna 10. The embodiments of the present application do not limit the working frequency bands corresponding to the first working state and the second working state.

[0091] In the implementation mode in which the frame antenna 10 includes a cellular antenna, the working frequency band corresponding to the first working state can be an N78 frequency band (about 3.3 GHz-3.8 GHz), and the second working frequency band can be any one of a B1 frequency band (about 1.9 GHz-2.2 GHz), a B3 frequency band (about 1.7 GHz-1.9 GHz), a B40 frequency band (about 2.3 GHz-2.4 GHz), and a B41 frequency band (about 2.4 GHz-2.7 GHz). The first switching device can switch the working state of the frame antenna 10, so that the working state of the frame antenna 10 is the first working state or the second working state.

[0092] In some implementation modes, the working frequency band corresponding to the first working state can be an N78 frequency band, and the working frequency band corresponding to the second working state is multiple, one of the corresponding second working states corresponds to a B1 frequency band, one of the second working states corresponds to a B3 frequency band, one of the second working states corresponds to a B40 frequency band, and one of the second working states corresponds to a B41 frequency band. The first switching device can switch the working state of the frame antenna 10, so that the working state of the frame antenna 10 is the first working state or one of the multiple second working states; that is, the frame antenna 10 has a fixed working state at any time.

[0093] In some implementations, the working frequency band corresponding to the first working state can be any one of a B1 frequency band, a B3 frequency band, a B40 frequency band, and a B41 frequency band, and the working frequency band corresponding to the second working state can be any one of the B1 frequency band, the B3 frequency band, the B40 frequency band, and the B41 frequency band except the working frequency band corresponding to the first working state, or an N78 frequency band. The first switching device can switch the working state of the frame antenna 10, so that the working state of the frame antenna 10 is the first working state or the second working state.

[0094] In one embodiment, the frame antenna 10 can be coupled with a radio frequency device through a feeding circuit, and the radio frequency device feeds signals to the frame antenna 10 through the feeding circuit. The feeding circuit can be different in each working state, and it should be understood that the feeding circuit can include a capacitor, and / or an inductor, and / or a resistor. The feeding circuit can be different in that the parameters of the capacitor, and / or the inductor, and / or the resistor included in the feeding circuit are different, or the connection mode of the capacitor, and / or the inductor, and / or the resistor is different, and the like. When the radio frequency device feeds through different feeding circuits, different resonances are formed, and different working frequency bands are covered. The first switching device can include a switch arranged between each feeding circuit and the frame antenna 10, and by switching the state of the switch, the radio frequency device can feed the frame antenna 10 through different feeding circuits.

[0095] In one embodiment, the frame antenna 10 can be grounded through a tuning circuit, and the tuning circuit can include a capacitor, and / or an inductor, and / or a resistor. The tuning circuit can be different in each working state, and the tuning circuit can be different in that the parameters of the capacitor, and / or the inductor, and / or the resistor included in the tuning circuit are different, or the connection mode of the capacitor, and / or the inductor, and / or the resistor is different, and the like. In different working states, the frame antenna 10 is grounded through different tuning circuits to form different resonances, and different working frequency bands are covered. The first switching device can include a switch arranged between each tuning circuit and the frame antenna 10, and by switching the state of the switch, the frame antenna 10 can be grounded through different tuning circuits.

[0096] In some implementations, the first switching device can include a switch arranged between each feeding circuit and the frame antenna 10, and a switch arranged between each tuning circuit and the frame antenna 10. By controlling the switching state of the two switches, the working state of the frame antenna 10 can also be switched.

[0097] In the above implementation, when the frame antenna 10 is in an idle state, the first switching device switches the frame antenna 10 to the switch state corresponding to the first working state. The idle state is a state in which the radio frequency device does not receive and transmit signals through the frame antenna 10, and can be a state in which the radio frequency device does not transmit and receive signals. At this time, the first switching device switches the frame antenna 10 to the switch state of the first working state and keeps it in the switch state of the first working state. In this way, when the frame antenna 10 is switched from the idle state to the working state, the frame antenna 10 can directly enter the first working state, that is, perform signal transmission and reception of the working frequency band corresponding to the first working state, thereby reducing the control time delay and improving the running speed of the electronic device.

[0098] In some embodiments, when the frame antenna 10 is in an idle state, the system efficiency of the first ultra-wideband antenna 20 in the switch state corresponding to the first working state is greater than the system efficiency of the first ultra-wideband antenna 20 in the switch state corresponding to the second working state. It can be understood that when the first switching device is in the switch state corresponding to the first working state, the first ultra-wideband antenna 20 couples signals to the frame antenna 10, so that the first ultra-wideband antenna 20 and the frame antenna 10 radiate signals outward at the same time. At this time, the system efficiency is the first efficiency; when the first switching device is in the switch state corresponding to the second working state, the first ultra-wideband antenna 20 couples signals to the frame antenna 10, so that the first ultra-wideband antenna 20 and the frame antenna 10 radiate signals outward at the same time. At this time, the system efficiency is the second efficiency, and the first efficiency is greater than the second efficiency. In this way, when the frame antenna 10 is in an idle state, the first switching device is switched to the switch state corresponding to the first working state with higher system efficiency of the first ultra-wideband antenna 20, so that the first ultra-wideband antenna 20 can directly couple signals to the frame antenna 10 in the switch state corresponding to the first working state during the idle state of the frame antenna 10, thereby ensuring higher system efficiency.

[0099] In some embodiments, when the frame antenna 10 is in a working state, the system efficiency of the first ultra-wideband antenna 20 in the first working state is greater than the system efficiency of the first ultra-wideband antenna 20 in the second working state. That is, compared to when the frame antenna 10 is in the first working state and in the second working state, the system efficiency of the first ultra-wideband antenna 20 is not equal, and the system efficiency of the first ultra-wideband antenna 20 is higher when the frame antenna 10 is in the first working state. In some examples, the system efficiency of the first ultra-wideband antenna 20 is higher when the frame antenna 10 is in the first working state; and when the frame antenna 10 is in an idle state and the first switching device is switched to the switch state corresponding to the first working state, the system efficiency of the first ultra-wideband antenna 20 is also higher.

[0100] In the implementation of the frame antenna 10 including a cellular antenna, the operating frequency band corresponding to the first operating state is the N78 band, and correspondingly, the operating frequency band corresponding to the second operating state is any one of the B1, B3, B40, and B41 bands; or, the operating frequency band corresponding to the first operating state is the N78 band, and there are multiple second operating states, one of which corresponds to the B1 band, one to the B3 band, one to the B40 band, and one to the B41 band. The first switching device can switch the frame antenna 10 to the first operating state or one of the multiple second operating states.

[0101] For example, when the first switching device switches to the switching state corresponding to the N78 frequency band, the system efficiency of the first ultra-wideband antenna 20 is approximately -5.6dB. When the first switching device switches to the switching states corresponding to the B1, B3, B40, and B41 frequency bands, the system efficiency of the first ultra-wideband antenna 20 is approximately -6.7dB. Therefore, it can be seen that when the first operating state corresponds to the N78 frequency band and the frame antenna 10 is in an idle state, the first ultra-wideband antenna 20 can directly couple signals to the frame antenna 10 in the switching state corresponding to the first operating state, ensuring high system efficiency.

[0102] Table 1 below shows the gain distribution of the first ultra-wideband antenna in the electronic device when the first switching device switches to the switching state corresponding to the N78 frequency band:

[0103] Table 1

[0104] In the table above, 0°-180° in the row direction corresponds to the circumferential angle in Figure 8, and -180°-180° in the column direction corresponds to the elevation angle in Figure 8. The position marked "increased" in the table indicates that the gain of the first ultra-wideband antenna is higher than that of the first ultra-wideband antenna when the first switching device switches to the switching state corresponding to the N78 frequency band (e.g., an increase of 0dB-3dB). The position marked "significantly increased" in the table indicates that the gain of the first ultra-wideband antenna is significantly higher than that of the first ultra-wideband antenna when the first switching device switches to the switching state corresponding to the N78 frequency band (e.g., an increase of more than 3dB). The position with a circumferential angle of 0° and an elevation angle of -90° is perpendicular to the rear cover (parallel to the X direction), and the position with a circumferential angle of 90° and an elevation angle of 90° is perpendicular to the frame (parallel to the Y direction). As shown in the table above, when the first switching device switches to the switching state corresponding to the N78 frequency band, the omnidirectionality of the first ultra-wideband antenna is better, and the gain is significantly improved in the direction perpendicular to the back cover and in the direction perpendicular to the frame, thus improving the positioning accuracy.

[0105] In other implementations, the operating frequency band corresponding to the first operating state is any one of the B1, B3, B40, and B41 bands, and the operating frequency band corresponding to the second operating state can be any one of the B1, B3, B40, and B41 bands other than the band corresponding to the first operating state, or the N78 band. The first switching device can switch the operating state of the frame antenna 10, so that the operating state of the frame antenna 10 is either the first operating state or the second operating state.

[0106] Referring to Figures 1 and 9, in this embodiment, the electronic device further includes a second ultra-wideband antenna 30, which is disposed on the frame 120. It is understood that the second ultra-wideband antenna 30 can be integrally formed with the frame 120; that is, a portion of the frame 120 serves as the second ultra-wideband antenna 30, i.e., a portion of the frame 120 acts as the radiator of the second ultra-wideband antenna 30. Of course, the second ultra-wideband antenna 30 can also be connected to the frame 120 by means of patching, bonding, etc., and this embodiment does not impose any limitations on this.

[0107] In some implementations, the bezel 120 may include a first segment 123 and a second segment 124 along its length, with an included angle (e.g., approximately 90°) between the first segment 123 and the second segment 124. The length of the first segment 123 may be greater than the length of the second segment 124. Correspondingly, the bezel antenna 10 may be disposed in the first segment 123, and the second ultra-wideband antenna 30 may be disposed in the second segment 124 to improve the isolation between the second ultra-wideband antenna 30 and the bezel 120. The length direction of the bezel 120 may be the direction in which the bezel 120 surrounds the display panel and the back cover.

[0108] In the above implementation, the operating frequency band of the second ultra-wideband antenna 30 is the same as that of the first ultra-wideband antenna 20. That is, the signals transmitted and received by the second ultra-wideband antenna 30 are consistent with those transmitted and received by the first ultra-wideband antenna 20 (same frequency band). With this configuration, the positioning of electronic devices can also be achieved through the second ultra-wideband antenna 30.

[0109] Referring to Figures 10 and 11, in this embodiment of the application, the electronic device further includes a control device 40 and a second switching device 50. The control device 40 is coupled to the first ultra-wideband antenna 20 and the second ultra-wideband antenna 30 through the second switching device 50. That is, the control device 40 transmits signals to the first ultra-wideband antenna 20 and the second ultra-wideband antenna 30 through the second switching device 50, and the control device 40 receives signals from the first ultra-wideband antenna 20 and the second ultra-wideband antenna 30 through the second switching device 50. For example, the control device 40 may include a control port GPIO, which is connected to the second switching device 50, enabling the control device 40 to control the operation of the second switching device 50.

[0110] The second switching device 50 includes a first switching state and a second switching state, as shown in Figure 10. In the first switching state, under the control of the control device 40, the second switching device 50 keeps the first ultra-wideband antenna 20 in an active state and the second ultra-wideband antenna 30 in an idle state. As shown in Figure 11, in the second switching state, under the control of the control device 40, the second switching device 50 keeps the first ultra-wideband antenna 20 in an idle state and the second ultra-wideband antenna 30 in an active state. The idle state refers to a state where there is no signal fed into the corresponding ultra-wideband antenna from the control device 40, and no signal entering the control device 40 from the corresponding ultra-wideband antenna.

[0111] With the above settings, the control device 40 can select either the first ultra-wideband antenna 20 or the second ultra-wideband antenna 30 to be in working state, meaning the control device 40 can choose to use either the first ultra-wideband antenna 20 or the second ultra-wideband antenna 30 for positioning. Since the first ultra-wideband antenna 20 and the second ultra-wideband antenna 30 are located in different positions, their uplink and downlink signal strengths may differ at the same time. In this case, the control device 40 can control the ultra-wideband antenna with the stronger downlink signal to be in working state, thus using the ultra-wideband antenna with the stronger downlink signal for positioning, improving communication quality and positioning accuracy.

[0112] In some embodiments, as shown in FIG9, the radiation direction of the first ultra-wideband antenna 20 is approximately along the Y direction, and the radiation direction of the second ultra-wideband antenna 30 is approximately along the X direction. Thus, the radiation direction can be adjusted by selecting different ultra-wideband antennas to meet different communication requirements.

[0113] As shown in Figure 10, in some embodiments, the control device 40 may include a transmit port TX and a receive port RX, which operate alternately. That is, when the transmit port TX is active, the receive port RX is inactive, and when the receive port RX is active, the transmit port TX is inactive. Correspondingly, in the first switching state, the second switching device 50 couples the receive port RX and the transmit port TX to the first ultra-wideband antenna 20 when they are active. Specifically, when the receive port RX is active, the second switching device 50 couples the receive port RX to the first ultra-wideband antenna 20 for signal reception, and when the transmit port TX is active, the second switching device 50 couples the transmit port TX to the first ultra-wideband antenna 20 for signal transmission. Similarly, as shown in Figure 11, in the second switching state, the second switching device 50 couples the receiving port RX and the transmitting port TX to the second ultra-wideband antenna 30 when they are working. That is, when the receiving port RX is working, the second switching device 50 couples the receiving port RX to the second ultra-wideband antenna 30 to receive signals, and when the transmitting port TX is working, the second switching device 50 couples the transmitting port TX to the second ultra-wideband antenna 30 to transmit signals.

[0114] In some implementations, as shown in Figure 10, in the first switching state, when the receiving port RX is working, the second switching device 50 couples the receiving port RX to the first ultra-wideband antenna 20. At the same time, the second switching device 50 also couples the transmitting port TX to the second ultra-wideband antenna 30. Since the transmitting port TX is not working, even if the second ultra-wideband antenna 30 is connected to the transmitting port TX, the transmitting port TX will not feed a signal to the second ultra-wideband antenna 30, and the second ultra-wideband antenna 30 is in an idle state. When the transmitting port TX is working, the second switching device 50 couples the transmitting port TX to the first ultra-wideband antenna 20. At the same time, the second switching device 50 also couples the receiving port RX to the second ultra-wideband antenna 30. Since the control device 40 does not receive signals from the receiving port RX at this time, even if the second ultra-wideband antenna 30 is connected to the receiving port RX, the signals from the second ultra-wideband antenna 30 will not be received by the control device 40, and the second ultra-wideband antenna 30 is in an idle state.

[0115] Similarly, as shown in Figure 11, in the second switching state, when the receiving port RX is working, the second switching device 50 couples the receiving port RX to the second ultra-wideband antenna 30. At the same time, the second switching device 50 also couples the transmitting port TX to the first ultra-wideband antenna 20. Since the transmitting port TX is not working, even if the first ultra-wideband antenna 20 is connected to the transmitting port TX, the transmitting port TX will not feed a signal to the first ultra-wideband antenna 20, and the first ultra-wideband antenna 20 is in an idle state. When the transmitting port TX is working, the second switching device 50 couples the transmitting port TX to the second ultra-wideband antenna 30. At the same time, the second switching device 50 also couples the receiving port RX to the first ultra-wideband antenna 20. Since the control device 40 does not receive signals from the receiving port RX at this time, even if the first ultra-wideband antenna 20 is connected to the receiving port RX, the signal from the first ultra-wideband antenna 20 will not be received by the control device 40, and the first ultra-wideband antenna 20 is in an idle state.

[0116] In some embodiments, the control device 40 may include a device capable of implementing control functions, such as a microcontroller (e.g., an MXC chip), and this application embodiment does not impose any limitations on this. The second switching device may include a switch or other device capable of switching between the first switching state and the second switching state, and this application embodiment does not impose any limitations on this.

[0117] Referring again to Figures 10 and 11, in some embodiments, the electronic device further includes a filter 60. The second switching device 50 is coupled to the first ultra-wideband antenna 20 and the second ultra-wideband antenna 30 through the filter 60. The filter 60 can filter out signals other than those required for communication, thereby improving the communication quality.

[0118] The above description is merely a specific implementation of the embodiments of this application, but the protection scope of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the protection scope of this application. Therefore, the protection scope of this application should be determined by the protection scope of the claims.

Claims

1. An electronic device, characterized in that, include: The border surrounds the accommodating space; A back cover that covers the frame and is used to close the accommodating space; A frame antenna, wherein the frame antenna is disposed on the frame; A first ultra-wideband antenna is disposed on the rear cover. Along a direction perpendicular to the length of the frame, the projection of the first ultra-wideband antenna on the frame covers at least a portion of the frame antenna. Along a direction perpendicular to the length of the frame, the first ultra-wideband antenna and the frame antenna are spaced apart, and the distance between the first ultra-wideband antenna and the frame antenna is less than or equal to 5 mm. The first ultra-wideband antenna is used to couple signals to the frame antenna. The operating frequency band of the first ultra-wideband antenna is higher than that of the frame antenna.

2. The electronic device according to claim 1, characterized in that, The electronic device further includes a first switching device, which is coupled to the frame antenna. The frame antenna includes a first operating state and a second operating state. The first switching device is used to switch the operating state of the frame antenna. The operating frequency bands corresponding to the first operating state and the second operating state are different. When the frame antenna is in an idle state, the first switching device switches the frame antenna to a switch state corresponding to the first working state.

3. The electronic device according to claim 2, characterized in that, When the frame antenna is in an idle state, the system efficiency of the first ultra-wideband antenna in the switching state corresponding to the first operating state is greater than the system efficiency of the first ultra-wideband antenna in the switching state corresponding to the second operating state.

4. The electronic device according to claim 2 or 3, characterized in that, When the frame antenna is in operation, the system efficiency of the first ultra-wideband antenna in the first operation state is greater than that in the second operation state.

5. The electronic device according to any one of claims 1-4, characterized in that, The frame antenna includes a cellular antenna, and the operating frequency band corresponding to the first operating state is the N78 frequency band.

6. The electronic device according to any one of claims 1-4, characterized in that, The operating frequency band corresponding to the first operating state is any one of the B1, B3, B40, and B41 frequency bands.

7. The electronic device according to any one of claims 1-6, characterized in that, The frame antenna includes a cellular antenna, and / or a wireless network antenna, and / or a Bluetooth antenna.

8. The electronic device according to any one of claims 1-7, characterized in that, The electronic device also includes A second ultra-wideband antenna is disposed on the frame, and the second ultra-wideband antenna is spaced apart from the frame antenna. The operating frequency band of the second ultra-wideband antenna is the same as that of the first ultra-wideband antenna. The system includes a control device and a second switching device. The control device is coupled to the first ultra-wideband antenna and the second ultra-wideband antenna via the second switching device. In a first switching state, the second switching device, under the control of the control device, enables the first ultra-wideband antenna to be in an active state and the second ultra-wideband antenna to be in an idle state. In a second switching state, the second switching device, under the control of the control device, enables the first ultra-wideband antenna to be in an idle state and the second ultra-wideband antenna to be in an active state.

9. The electronic device according to claim 8, characterized in that, The control device includes a transmitting port and a receiving port, which operate alternately. In the first switching state, the second switching device couples the receiving port and the transmitting port to the first ultra-wideband antenna when they are operating. In the second switching state, the second switching device couples the receiving port and the transmitting port to the second ultra-wideband antenna when they are operating.

10. The electronic device according to any one of claims 1-9, characterized in that, The electronic device also includes a motherboard, which is disposed within the accommodating space. The motherboard is arranged parallel to the rear cover, and the motherboard is coupled to the first ultra-wideband antenna via a capacitor structure.

11. The electronic device according to claim 10, characterized in that, The capacitor structure includes a feed board and a feed point located on the first ultra-wideband antenna. The feed board is disposed on the main board, and the feed board and the feed point are spaced apart.

12. The electronic device according to claim 10 or 11, characterized in that, The motherboard is equipped with a shielding cover, and the shortest distance between the first ultra-wideband antenna and the shielding cover is 1.5mm-2mm.

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