An antenna structure and electronic device

Abstract

The application provides an antenna structure and an electronic device. The antenna structure comprises a first radiator and a second radiator, and the first radiator and the second radiator are both structures with a first end being a ground end and a second end being an open end. The resonance point frequency of the resonance generated by the first radiator and the second radiator is adjusted, so that the antenna can work in multiple different working frequency bands.

Description

Technical Field

[0001] This application relates to the field of wireless communication, and more particularly to an antenna structure and electronic device. Background Technology

[0002] In wireless communication systems, the quality and capability of the wireless communication link are directly related to the antenna gain, and array antenna technology facilitates the achievement of higher gains.

[0003] The main structural components of a planar inverted-F antenna (PIFA) are a feed point and a ground point located on a planar conductor at a certain height above the ground. Due to its advantages such as simple impedance matching and small size, this type of antenna can be used as a sub-antenna in an antenna array. However, as the clearance (distance between the radiator and the ground) of the array antenna decreases, its operating bandwidth becomes narrower, making it less suitable for the increasingly diverse communication frequency bands used by electronic devices. Summary of the Invention

[0004] This application provides an antenna structure and an electronic device. The antenna structure includes a first radiator and a second radiator, both having a first end as a grounded terminal and a second end as an open terminal. The electronic device includes an antenna, also comprising a first radiator and a second radiator, both having a first end as a grounded terminal and a second end as an open terminal. By adjusting the resonant frequency of the resonance generated by the first and second radiators, the antenna can operate in multiple different frequency bands.

[0005] In a first aspect, an antenna structure is provided, comprising: a first radiator, a first end of which is a first open end, and a second end of which is a first ground end; a second radiator, a first end of which is a second open end, and a second end of which is a second ground end; wherein the first radiator includes a first feed point, the second radiator includes a second feed point, the first feed point and the second feed point are used for coupling with a feed circuit; the first ground end includes a first ground point, the first ground point is used for selective grounding via a first switch; the second ground end includes a second ground point, the second ground point is used for selective grounding via the first switch; the minimum distance between the first radiator and the second radiator is less than or equal to one-third of the dimension of the first radiator in a first direction, and less than or equal to one-third of the dimension of the second radiator in a second direction, the first direction being the direction from the first ground end to the first open end, and the second direction being the direction from the second ground end to the second open end.

[0006] According to embodiments of this application, both the first radiator and the second radiator have a structure where the first end is an open end and the second end is a grounded end. The first and second radiators can form similar structures, exhibiting low profile characteristics. Furthermore, the distance between the first and second radiators is relatively compact. This facilitates antenna placement within increasingly space-constrained electronic devices.

[0007] The electrical connection state between the first grounding point (or the second grounding point) and the ground can be switched by the first switch (or the second switch) (e.g., the first grounding point (or the second grounding point) is coupled or disconnected from the ground). The operating frequency band of the antenna can be adjusted so that the electronic device has good communication performance in different operating frequency bands.

[0008] In conjunction with the first aspect, in some implementations of the first aspect, when the first switch is in the first switch state and the second switch is in the second switch state, the first radiator is used to generate the first resonance and the second radiator is used to generate the second resonance, and the resonant frequency band of the first resonance and the resonant frequency band of the second resonance both include the first operating frequency band; when the first switch is in the third switch state and the second switch is in the fourth switch state, the first radiator is used to generate the third resonance and the second radiator is used to generate the fourth resonance, and the resonant frequency band of the third resonance and the resonant frequency band of the fourth resonance both include the second operating frequency band, and the first operating frequency band and the second operating frequency band are different.

[0009] According to an embodiment of this application, the number of grounding points coupled between the first radiator (or the second radiator) and the floor can be switched by a first switch (or a second switch), thereby adjusting the resonant frequency of the resonance generated by the first radiator (or the second radiator). As the number of grounding points coupled between the first radiator (or the second radiator) and the floor increases, the resonant frequency of the resonance generated by the first radiator (or the second radiator) shifts towards a higher frequency.

[0010] In conjunction with the first aspect, in some implementations of the first aspect, the power supply circuit further includes a phase shifting circuit, and the first power supply point is used to couple with the phase shifting circuit; when the phase shifting circuit is in the first phase shifting state, the phase difference between the phase of the electrical signal at the first power supply point and the phase of the electrical signal at the second power supply point is the first phase difference; when the phase shifting circuit is in the second phase shifting state, the phase difference between the phase of the electrical signal at the first power supply point and the phase of the electrical signal at the second power supply point is the second phase difference, and the first phase difference and the second phase difference are different.

[0011] In conjunction with the first aspect, in some implementations of the first aspect, the antenna is used to generate a first radiation pattern based on the phase shifting circuit being in a first phase shifting state; and the antenna is used to generate a second radiation pattern based on the phase shifting circuit being in a second phase shifting state, wherein the first radiation pattern and the second radiation pattern are different.

[0012] According to an embodiment of this application, by adjusting the circuit state (phase shift state) of the phase shift circuit, the phase difference between the electrical signals fed into the first feed point and the second feed point can be made different, thereby adjusting the radiation characteristics of the antenna.

[0013] In conjunction with the first aspect, in some implementations of the first aspect, the first grounding terminal and the second grounding terminal are opposite to each other and do not touch each other.

[0014] In conjunction with the first aspect, in some implementations of the first aspect, the first open terminal and the second ground terminal are opposite to each other and do not touch.

[0015] In conjunction with the first aspect, in some implementations of the first aspect, the first grounding terminal and the second grounding terminal are located on the first side of the virtual connection, the first open terminal and the second open terminal are located on the second side of the virtual connection, and the virtual connection is the connection between the center of the first radiator and the center of the second radiator.

[0016] In conjunction with the first aspect, in some implementations of the first aspect, the minimum distance between the second grounding terminal and the first radiator is less than the minimum distance between the second open terminal and the first radiator; the first radiator and the second radiator do not overlap along the first direction, and the first radiator and the second radiator at least partially overlap along the second direction.

[0017] According to the embodiments of this application, in the above structure, the coupling between the first radiator and the second radiator is weak, and the interference between the first radiator and the second radiator is small, which is beneficial to improving the performance of the antenna.

[0018] In conjunction with the first aspect, in some implementations of the first aspect, the antenna further includes a first element and a second element; wherein the first grounding point is used to selectively couple with the first element via a first switch; and the second grounding point is used to selectively couple with the second element via a second switch.

[0019] In a second aspect, an antenna structure is provided, comprising: a first radiator, a first end of which is a first open end, and a second end of which is a first ground end; a second radiator, a first end of which is a second open end, and a second end of which is a second ground end; the first radiator includes a first feed point, and the second radiator includes a second feed point, the first feed point and the second feed point being used for coupling with a feed circuit; the first ground end includes a first tuning point, the first tuning point being used for coupling with a first tuning circuit; the second ground end includes a second tuning point, the second tuning point being used for coupling with a second tuning circuit; wherein, the minimum distance between the first radiator and the second radiator is less than or equal to one-third of the dimension of the first radiator in a first direction, and less than or equal to one-third of the dimension of the second radiator in a second direction, the first direction being the direction from the first ground end to the first open end, and the second direction being the direction from the second ground end to the second open end; the minimum distance between the first tuning point and the first ground end is greater than or equal to one-third of the dimension of the first radiator in the first direction; and the minimum distance between the second tuning point and the second ground end is greater than or equal to one-third of the dimension of the second radiator in the second direction.

[0020] In conjunction with the second aspect, in some implementations of the second aspect, when the first tuning circuit is in the first circuit state and the second tuning circuit is in the second circuit state, the first radiator is used to generate the first resonance, and the second radiator is used to generate the second resonance. The resonant frequency bands of the first resonance and the second resonance both include the first operating frequency band. When the first tuning circuit is in the third circuit state and the second tuning circuit is in the fourth circuit state, the first radiator is used to generate the third resonance, and the second radiator is used to generate the fourth resonance. The resonant frequency bands of the third resonance and the fourth resonance both include the second operating frequency band, and the first operating frequency band and the second operating frequency band are different.

[0021] In conjunction with the second aspect, in some implementations of the second aspect, the power supply circuit further includes a phase shifting circuit, and the first power supply point is used to couple with the phase shifting circuit; when the phase shifting circuit is in the first phase shifting state, the phase difference between the phase of the electrical signal at the first power supply point and the phase of the electrical signal at the second power supply point is the first phase difference; when the phase shifting circuit is in the second phase shifting state, the phase difference between the phase of the electrical signal at the first power supply point and the phase of the electrical signal at the second power supply point is the second phase difference, and the first phase difference and the second phase difference are different.

[0022] In conjunction with the second aspect, in some implementations of the second aspect, the antenna is used to generate a first radiation pattern based on the phase shifting circuit being in a first phase shifting state; and the antenna is used to generate a second radiation pattern based on the phase shifting circuit being in a second phase shifting state, wherein the first radiation pattern and the second radiation pattern are different.

[0023] In conjunction with the second aspect, in some implementations of the second aspect, the first grounding terminal and the second grounding terminal are opposite to each other and do not touch each other.

[0024] In conjunction with the second aspect, in some implementations of the second aspect, the first open terminal and the second ground terminal are opposite to each other and do not touch.

[0025] In conjunction with the second aspect, in some implementations of the second aspect, the first grounding terminal and the second grounding terminal are located on the first side of the virtual connection, and the first open terminal and the second open terminal are located on the second side of the virtual connection, which is a connection between the center of the first radiator and the center of the second radiator.

[0026] In conjunction with the second aspect, in some implementations of the second aspect, the minimum distance between the second grounding terminal and the first radiator is less than the minimum distance between the second open terminal and the second radiator.

[0027] Thirdly, an electronic device is provided, including an antenna structure as described in any one of the first and second aspects.

[0028] In conjunction with the third aspect, in some implementations of the third aspect, the electronic device further includes a floor and a back cover; wherein a first radiating body is disposed on the back cover, and a second radiating body is disposed on the back cover.

[0029] In conjunction with the third aspect, in some implementations of the third aspect, the electronic device further includes a printed circuit board (PCB), with the first radiator and the second radiator located between the back cover and the PCB. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of an electronic device 100 provided in an embodiment of this application.

[0031] Figure 2 This is a schematic diagram of an electronic device 100 provided in an embodiment of this application.

[0032] Figure 3 This is a schematic diagram showing the position of the radiator in the electronic device 100 provided in the embodiments of this application.

[0033] Figure 4 This is a schematic diagram showing the position of the radiator in the electronic device 100 provided in the embodiments of this application.

[0034] Figure 5 This is a schematic diagram showing the position of the radiator in the electronic device 100 provided in the embodiments of this application.

[0035] Figure 6 This is a schematic diagram of another electronic device 100 provided in an embodiment of this application.

[0036] Figure 7 This is a schematic diagram of another electronic device 100 provided in an embodiment of this application.

[0037] Figure 8 This is a schematic diagram of another electronic device 100 provided in an embodiment of this application.

[0038] Figure 9 This is a schematic diagram of another electronic device 100 provided in an embodiment of this application.

[0039] Figure 10 This is a schematic diagram of the layout of an antenna provided in an embodiment of this application, which includes multiple radiators.

[0040] Figure 11 This is a schematic diagram of the layout of an antenna provided in an embodiment of this application, which includes multiple radiators.

[0041] Figure 12 This is a schematic diagram of the layout of an antenna provided in an embodiment of this application, which includes multiple radiators.

[0042] Figure 13 This is a schematic diagram of the layout of an antenna provided in an embodiment of this application, which includes multiple radiators.

[0043] Figure 14 This is a schematic diagram of the layout of an antenna provided in an embodiment of this application, which includes multiple radiators.

[0044] Figure 15 This is a schematic diagram of the layout of an antenna provided in an embodiment of this application, which includes multiple radiators.

[0045] Figure 16 The results are the S-parameter simulation results of antenna 200 under the condition that the first grounding point, the second grounding point and the ground are coupled to the ground.

[0046] Figure 17 The results are the S-parameter simulation results of antenna 200 under the condition that the first grounding point, the second grounding point and the ground are disconnected from the ground.

[0047] Figure 18 This is the radiation pattern of antenna 200 when the phase-shifting circuit is in the first phase-shifting state.

[0048] Figure 19 This is the radiation pattern of antenna 200 when the phase-shifting circuit is in the second phase-shifting state.

[0049] Figure 20 This is the radiation pattern of antenna 200 when the phase-shifting circuit is in the third phase-shifting state.

[0050] Figure 21 This is the radiation pattern of antenna 200 when the phase-shifting circuit is in the fourth phase-shifting state.

[0051] Figure 22 This is a schematic diagram of another electronic device 100 provided in an embodiment of this application.

[0052] Figure 23 This is a schematic diagram of another electronic device 100 provided in an embodiment of this application. Detailed Implementation

[0053] It should be understood that the term "and / or" used in this document is merely a description of the same field in the related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0054] The phrase "within the range" used in this application, unless otherwise specified, includes both endpoints of the range by default. For example, in the range of 1 to 5, it includes the values ​​1 and 5.

[0055] Coupling can be understood as direct coupling and / or indirect coupling. "Coupled connection" can be understood as a direct coupling connection and / or indirect coupling connection. Direct coupling can also be called "electrical connection," which can be understood as physical contact and electrical conduction between components; it can also be understood as the form of connection between different components in a circuit structure through physical lines that can transmit electrical signals, such as copper foil or wires on a printed circuit board (PCB). "Indirect coupling" can be understood as electrical conduction between two conductors through a gap / non-contact method. In one embodiment, indirect coupling can also be called capacitive coupling, for example, signal transmission is achieved by forming an equivalent capacitance through coupling between the gaps between two conductive parts.

[0056] A metasurface is a device that can modulate characteristics such as the amplitude or phase of an electrical signal (e.g., electromagnetic waves coupled between adjacent radiators). In one embodiment, a metasurface can be a frequency selective surface (FSS). It should be understood that FSSs include passive resonators, which are easier to implement in design or application.

[0057] Components / devices: including at least one of lumped components / devices and distributed components / devices.

[0058] Lumped components / devices: This refers to all components whose size is much smaller than the wavelength relative to the circuit's operating frequency. For signals, the characteristics of these components remain constant regardless of frequency. Lumped components / devices can include lumped capacitors, lumped inductors, etc.

[0059] Distributed elements / devices: Unlike lumped elements, when a signal passes through an element, the characteristics of each point within the element will vary depending on the signal. Therefore, the element as a whole cannot be considered a single entity with fixed characteristics, and should be called a distributed element. Distributed elements / devices can include distributed capacitance, distributed inductance, etc.

[0060] Capacitance: can be understood as lumped capacitance and / or distributed capacitance. Lumped capacitance includes capacitive components, such as capacitor elements; distributed capacitance (or distributed capacitance) includes the equivalent capacitance formed by two conductive components separated by a certain gap.

[0061] Inductance: can be understood as lumped inductance and / or distributed inductance. Lumped inductance includes inductive components, such as inductive elements; distributed inductance (or distributed inductance) includes the equivalent inductance formed through a conductive element of a certain length, such as the equivalent inductance formed by a conductor due to bending or rotation.

[0062] Radiator: In an antenna, this is the device used to receive / transmit electromagnetic wave radiation. In some cases, the term "antenna" is narrowly defined as a radiator, which converts guided wave energy from the transmitter into radio waves, or converts radio waves into guided wave energy, for radiating and receiving radio waves. The modulated high-frequency current energy (or guided wave energy) generated by the transmitter is transmitted to the transmitting radiator via a feed line, where it is converted into electromagnetic wave energy of a specific polarization and radiated in the desired direction. The receiving radiator converts the electromagnetic wave energy of a specific polarization from a specific direction in space back into modulated high-frequency current energy, which is then transmitted to the receiver input via a feed line.

[0063] The radiator may include a conductor with a specific shape and size, such as a wire or sheet, and this application does not limit the specific shape. In one embodiment, the wire radiator may be simply referred to as a wire antenna. In one embodiment, the wire radiator may be implemented by a conductive frame, and may also be referred to as a frame antenna. In one embodiment, the wire radiator may be implemented by a support conductor, and may also be referred to as a support antenna. In one embodiment, the wire diameter (e.g., including thickness and width) of the wire radiator, or the radiator of the wire antenna, is much smaller than the wavelength (e.g., the wavelength of the medium) (e.g., less than 1 / 16 of the wavelength), and the length may be comparable to the wavelength (e.g., the wavelength of the medium) (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, and inverted F antennas (also known as IFA, Inverted F Antenna). For example, in a dipole antenna, each dipole antenna typically includes two radiating stubs, each fed from the feed end of the radiating stub by a feed section. For example, an inverted-F antenna (IFA) can be considered as a monopole antenna with an added ground path. An IFA antenna has one feed point and one ground point, and is called an inverted-F antenna because its side view is inverted-F shaped. In one embodiment, the sheet radiator may include a microstrip antenna or a patch antenna, such as a planar inverted-F antenna (also known as a PIFA). In one embodiment, the sheet radiator may be implemented using a planar conductor (e.g., a conductive sheet or conductive coating). In one embodiment, the sheet radiator may include a conductive sheet, such as a copper sheet. In one embodiment, the sheet radiator may include a conductive coating, such as silver paste. The shape of the sheet radiator includes circular, rectangular, and annular shapes, and this application does not limit the specific shape. The structure of a microstrip antenna generally consists of a dielectric substrate, a radiator, and a ground plane, wherein the dielectric substrate is disposed between the radiator and the ground plane.

[0064] Radiators may also include slots or gaps formed on a conductor, for example, closed or semi-closed slots or gaps formed on a grounded conductor surface. In one embodiment, a slotted or slit radiator may be simply referred to as a slot antenna or a gap antenna. In one embodiment, the radial dimension (e.g., including width) of the slot or gap of the slot antenna / gap antenna is much smaller than the wavelength (e.g., the dielectric wavelength) (e.g., less than 1 / 16 of the wavelength), while the length dimension may be comparable to the wavelength (e.g., the dielectric wavelength) (e.g., a length of approximately 1 / 8 of the wavelength, or 1 / 8 to 1 / 4, or 1 / 4 to 1 / 2, or longer). In one embodiment, a radiator with a closed slot or gap may be simply referred to as a closed slot antenna. In one embodiment, a radiator with a semi-closed slot or gap (e.g., an opening added to a closed slot or gap) may be simply referred to as an open slot antenna. In some embodiments, the gap shape is elongated. In some embodiments, the length of the gap is approximately half a wavelength (e.g., the dielectric wavelength). In some embodiments, the length of the gap is approximately an integer multiple of a wavelength (e.g., one dielectric wavelength). In some embodiments, the slot can be fed by transmission lines connected across one or both sides, thereby exciting a radio frequency electromagnetic field on the slot and radiating electromagnetic waves into space. In one embodiment, the radiator of the slot antenna or gap antenna can be implemented by a conductive frame grounded at both ends, also known as a frame antenna; in this embodiment, the slot antenna or gap antenna can be viewed as including a linear radiator, the linear radiator being spaced apart from the ground and grounded at both ends, thereby forming a closed or semi-closed slot or gap. In one embodiment, the radiator of the slot antenna or gap antenna can be implemented by a support conductor grounded at both ends, also known as a support antenna.

[0065] A phase-shifting circuit is a circuit (or device) that can adjust the phase of an electrical signal (radio frequency signal). For example, a phase-shifting circuit includes a phase shifter. In one embodiment, when an electrical signal (e.g., a radio frequency signal) passes through the phase-shifting circuit, the phase of the signal changes. In adjusting the parameters of the phase-shifting circuit, it can provide phase adjustment between 0° and 360° to change the phase of the passing electrical signal.

[0066] It should be understood that an ideal phase-shifting circuit does not change the amplitude of the electrical signal (e.g., voltage value); that is, the electrical signal can pass through without distortion, although its phase has changed. In one embodiment, the phase-shifting circuit can provide one or more states, each corresponding to a different phase shift angle; simply put, the phase-shifting circuit has one or more phase-shifted states. It should be understood that these one or more phase-shifted states can be achieved by adjusting the circuit parameters of the phase-shifting circuit.

[0067] A power supply circuit is a combination of all circuits used for receiving and transmitting radio frequency (RF) signals. It can include a transceiver and an RF front-end. In some cases, the term "power supply circuit" is narrowly interpreted as a radio frequency integrated circuit (RFIC), which can be considered to include both the RF front-end chip and the transceiver. The power supply circuit has the function of converting radio waves (e.g., RF signals) into electrical signals (e.g., digital signals). It is generally considered part of the RF component.

[0068] In some embodiments, the electronic device may also include a test socket (or, RF socket or RF test socket). This test socket can be used to insert a coaxial cable to test the characteristics of the RF front-end circuitry or the radiator of the antenna. The RF front-end circuitry can be considered as the circuitry coupled between the test socket and the transceiver.

[0069] In some embodiments, the radio frequency front-end circuit can be integrated into a radio frequency front-end chip in an electronic device, or the radio frequency front-end circuit and the transceiver can be integrated into a radio frequency chip in an electronic device.

[0070] It should be understood that any two feed circuits in the first / second / ...Nth feed circuit of this application can share the same transceiver, for example, by transmitting signals through a radio frequency channel in a transceiver (e.g., a port (pin) of a radio frequency chip); they can also share a radio frequency front-end circuit, for example, by processing signals through a tuning circuit or amplifier in a radio frequency front-end.

[0071] The grounding / feeding structure may include connectors, such as metal springs, and the radiator is coupled to the ground / feeding circuit via the grounding structure. In some embodiments, the feeding structure may include a transmission line / feeding wire, and the grounding structure may include a grounding wire.

[0072] End / Point: The term "end / point" in the context of the antenna radiator's first end / second end / feed end / ground end / feed point / grounding point / connection point should not be narrowly interpreted as necessarily being a point or end physically disconnected from other radiators. It can also be considered as a point or segment on a continuous radiator. In one embodiment, "end / point" can include a connection / coupling region on the antenna radiator that couples to other conductive structures. For example, a feed end / feed point can be a coupling region on the antenna radiator that couples to a feed structure or feed circuit (e.g., a region facing a part of the feed circuit). Similarly, a ground end / grounding point can be a connection / coupling region on the antenna radiator that couples to a ground structure or grounding circuit.

[0073] Open terminal, closed terminal: In some embodiments, open terminal and closed terminal are, for example, relative to whether or not they are grounded; the closed terminal is grounded, and the open terminal is not grounded. In some embodiments, open terminal and closed terminal are, for example, relative to other conductors; the closed terminal is electrically connected to other conductors, and the open terminal is not electrically connected to other conductors. In one embodiment, the open terminal may also be referred to as a floating terminal, free terminal, open terminal, or open-circuit terminal. In one embodiment, the closed terminal may also be referred to as a ground terminal or short-circuit terminal. It should be understood that in some embodiments, other conductors can be coupled through the open terminal to transfer coupled energy (which can be understood as transferring current).

[0074] In some embodiments, the understanding of "closed end" can also be from the perspective of current distribution. A closed end or ground end can be understood as a point of high current or low electric field on a radiator. In one embodiment, coupling electronic devices (e.g., capacitors, inductors, etc.) through a closed end can maintain the current distribution characteristics of the point of high current / low electric field. In one embodiment, opening a slit at or near the closed end (e.g., filling the slit with insulating material) can maintain the current distribution characteristics of the point of high current / low electric field.

[0075] In some embodiments, the understanding of "open terminal" can also be from the perspective of current distribution. An open terminal or a floating terminal can be understood as a point with a small current or a point with a large electric field on the radiator. In one embodiment, coupling electronic devices (e.g., capacitors, inductors, etc.) through an open terminal can maintain the current distribution characteristics of the point with a small current or a large electric field.

[0076] It should be understood that when an electronic device (e.g., capacitor, inductor, etc.) is coupled at the radiator end of a gap (which, from the perspective of the radiator's structure, is similar to the radiator at the opening of an open or floating end), the radiator end can be a point with a large current / small electric field. In this case, it should be understood that the radiator end at the gap is actually a closed end or a grounded end, etc.

[0077] The "floating radiator" mentioned in the embodiments of this application refers to a radiator that is not directly connected to the feed line / feed branch and / or ground line / ground branch, but is fed and / or grounded through indirect coupling.

[0078] It should be understood that "suspended" in "suspended end" or "suspended radiator" does not mean that there is no structure around the radiator to support it. In one embodiment, the suspended radiator may be, for example, a radiator disposed on the inner surface of an insulating back cover.

[0079] Resonance / Resonant Frequency: The resonant frequency is also called the resonance frequency. The resonant frequency can have a frequency range, that is, the frequency range in which resonance occurs. The frequency corresponding to the strongest resonance point is the center frequency. The return loss characteristic of the center frequency can be less than -20dB. It should be understood that, unless otherwise specified, when the antenna / radiator mentioned in this application generates "first / second...resonance," the first resonance should be the fundamental mode resonance generated by the antenna / radiator, or in other words, the lowest frequency resonance generated by the antenna / radiator. It should be understood that the antenna / radiator can generate one or more antenna modes according to a specific design, and each antenna mode can correspond to a fundamental mode resonance.

[0080] Resonant frequency band: The range of resonant frequencies is the resonant frequency band. The return loss characteristics at any frequency point within the resonant frequency band can be less than -6dB or -5dB.

[0081] Communication band / operating band: Regardless of the type of antenna, it always operates within a certain frequency range (bandwidth). For example, an antenna supporting the B40 band operates within the frequency range of 2300MHz to 2400MHz, or in other words, the antenna's operating band includes the B40 band. The frequency range that meets the specifications can be considered the antenna's operating band.

[0082] The resonant frequency band and the operating frequency band can be the same or can partially overlap. In one embodiment, one or more resonant frequency bands of the antenna can cover one or more operating frequency bands of the antenna.

[0083] Electrical length: can be the ratio of physical length (i.e., mechanical length or geometric length) to the wavelength of the transmitted electromagnetic wave. Electrical length can satisfy the following formula:

[0084]

[0085] Where L is the physical length and λ is the wavelength of the electromagnetic wave.

[0086] Wavelength: or operating wavelength, can be the wavelength corresponding to the center frequency of the resonant frequency or the center frequency of the operating frequency band supported by the antenna. For example, assuming the center frequency of the B1 uplink band (resonant frequency from 1920MHz to 1980MHz) is 1955MHz, then the operating wavelength can be the wavelength calculated using this frequency. Not limited to the center frequency, "operating wavelength" can also refer to the wavelength corresponding to the non-center frequency of the resonant frequency or operating frequency band.

[0087] It should be understood that the wavelength of the radiation signal in air can be calculated as follows: (air wavelength, or vacuum wavelength) = speed of light / frequency, where the frequency is the frequency of the radiation signal (MHz), and the speed of light can be taken as 3 × 10⁻⁶. 8m / s. The wavelength of the radiated signal in the medium can be calculated as follows: Where ε is the relative permittivity of the medium. The wavelength in this embodiment typically refers to the medium wavelength, which can be the medium wavelength corresponding to the center frequency of the resonant frequency, or the medium wavelength corresponding to the center frequency of the operating frequency band supported by the antenna. For example, assuming the center frequency of the B1 uplink band (resonant frequency from 1920MHz to 1980MHz) is 1955MHz, the wavelength can be the medium wavelength calculated using this frequency. Not limited to the center frequency, the "medium wavelength" can also refer to the medium wavelength corresponding to the non-center frequency of the resonant frequency or operating frequency band. For ease of understanding, the medium wavelength mentioned in this embodiment can be simply calculated using the relative permittivity of the medium filling one or more sides of the radiator. Antenna pattern: also called radiation pattern. It refers to the graph showing the relative field strength (normalized modulus) of the antenna radiation field changing with direction at a certain distance from the antenna (far field), usually represented by two mutually perpendicular planar patterns through the antenna's maximum radiation direction.

[0088] Antenna radiation patterns typically have multiple radiating beams. The beam with the highest radiating intensity is called the main lobe, and the remaining beams are called side lobes. Among the side lobes, the side lobe in the opposite direction to the main lobe is also called the back lobe.

[0089] Antenna return loss: This can be understood as the ratio of the signal power reflected back to the antenna port after passing through the antenna circuit to the transmit power at the antenna port. The smaller the reflected signal, the larger the signal radiated into space through the antenna, and the higher the antenna's radiation efficiency. Conversely, the larger the reflected signal, the smaller the signal radiated into space through the antenna, and the lower the antenna's radiation efficiency.

[0090] Antenna return loss can be represented by the S11 parameter, which is one of the S-parameters. S11 represents the reflection coefficient, and this parameter characterizes the antenna's transmission efficiency. The S11 parameter is usually negative. The smaller the S11 parameter, the smaller the antenna return loss, the less energy the antenna reflects back, which means more energy actually enters the antenna, and the higher the antenna's system efficiency. Conversely, the larger the S11 parameter, the greater the antenna return loss, and the lower the antenna's system efficiency.

[0091] It should be noted that in engineering, an S11 value of -6dB is generally used as the standard. When the S11 value of an antenna is less than -6dB, the antenna can be considered to be working normally, or the antenna can be considered to have good transmission efficiency.

[0092] Antenna radiation pattern: also known as radiation pattern. It refers to the graph showing the relative field strength (normalized modulus) of the antenna's radiated field as a function of direction at a certain distance from the antenna (far field). It is usually represented by two mutually perpendicular planar radiation patterns passing through the direction of maximum radiation of the antenna.

[0093] Antenna radiation patterns typically have multiple radiating beams. The beam with the highest radiating intensity is called the main lobe, and the remaining beams are called side lobes. Among the side lobes, the side lobe in the opposite direction to the main lobe is also called the back lobe.

[0094] Antenna polarization direction: at a given point in space, electric field strength E (vector) is a function of time t. As time progresses, the endpoints of the vector periodically trace a trajectory in space. If this trajectory is a straight line perpendicular to the ground, it is called vertical polarization; if it is horizontal to the ground, it is called horizontal polarization. If the trajectory is an ellipse or a circle, and when viewed along the direction of propagation, it rotates clockwise or right-handed with time, it is called right-hand circular polarization (RHCP); if it rotates counterclockwise or left-handed with time, it is called left-hand circular polarization (LHCP).

[0095] Antenna gain: Characterizes the degree to which an antenna concentrates the radiated input power. Generally, the narrower the main lobe and the smaller the side lobes of the antenna pattern, the higher the antenna gain.

[0096] Ground (GND): Generally refers to at least a portion of any grounding layer, ground plane, or grounding metal layer within an electronic device (such as a mobile phone), or at least a portion of any combination of the aforementioned grounding layers, ground planes, or grounding components. "Ground" can be used for grounding components within an electronic device. In one embodiment, "ground" can be the grounding layer of a circuit board in an electronic device, or a grounding metal layer formed by a ground plane formed within the frame of the electronic device or a metal film formed beneath the screen. In one embodiment, the circuit board can be a printed circuit board (PCB), such as an 8-layer, 10-layer, or 12-14-layer board having 8, 10, 12, 13, or 14 layers of conductive material, or components separated and electrically insulated by dielectric or insulating layers such as fiberglass or polymers. In one embodiment, the circuit board includes a dielectric substrate, a grounding layer, and a trace layer, with the trace layer and grounding layer electrically connected via vias. In one embodiment, components such as displays, touchscreens, input buttons, transmitters, processors, memory, batteries, charging circuits, and system-on-chip (SoC) architectures can be mounted on or connected to a circuit board; or electrically connected to trace layers and / or ground layers in the circuit board. For example, an RF source is disposed on a trace layer.

[0097] Any of the aforementioned grounding layers, ground planes, or grounding metal layers are made of conductive materials. In one embodiment, the conductive material may be any of the following: copper, aluminum, stainless steel, brass and their alloys, copper foil on an insulating substrate, aluminum foil on an insulating substrate, gold foil on an insulating substrate, silver-plated copper, silver-plated copper foil on an insulating substrate, silver foil on an insulating substrate and tin-plated copper, graphite-impregnated cloth, graphite-coated substrates, copper-plated substrates, brass-plated substrates, and aluminum-plated substrates. Those skilled in the art will understand that grounding layers / ground planes / grounding metal layers may also be made of other conductive materials.

[0098] Grounding: refers to coupling with the aforementioned ground / floor in any way. In one embodiment, grounding can be achieved through physical grounding, such as through a structural component of the mid-frame to achieve a physical ground at a specific location on the frame (or, physical ground). In another embodiment, grounding can be achieved through device grounding, such as through devices like capacitors / inductors / resistors connected in series or parallel (or, device ground).

[0099] The technical solutions of the embodiments of this application will now be described with reference to the accompanying drawings.

[0100] The technical solutions of the embodiments of this application will now be described with reference to the accompanying drawings.

[0101] like Figure 1As shown, the electronic device 100 may include: a cover 13, a display / module 15, a printed circuit board (PCB) 17, a middle frame 19, and a rear cover 21. It should be understood that in some embodiments, the cover 13 may be a glass cover, but it may also be replaced with a cover made of other materials, such as a PET (Polyethylene terephthalate) cover.

[0102] The cover plate 13 can be set close to the display module 15, and can be mainly used to protect the display module 15 from dust.

[0103] In one embodiment, the display module 15 may include a liquid crystal display (LCD), a light emitting diode (LED) display panel, or an organic light-emitting diode (OLED) display panel, etc., and this application embodiment does not limit this.

[0104] The middle frame 19 mainly serves to support the entire machine. Figure 1The diagram shows PCB 17 positioned between the middle frame 19 and the back cover 21. It should be understood that in one embodiment, PCB 17 may also be positioned between the middle frame 19 and the display module 15; this application does not limit this. The printed circuit board PCB 17 can be made of flame-retardant material (FR-4) dielectric substrate, Rogers dielectric substrate, or a hybrid dielectric substrate of Rogers and FR-4, etc. Here, FR-4 is a designation for a flame-retardant material grade, and Rogers dielectric substrate is a high-frequency board. Electronic components, such as radio frequency chips, are carried on PCB 17. In one embodiment, a metal layer can be provided on the printed circuit board PCB 17. This metal layer can be used for grounding the electronic components carried on the printed circuit board PCB 17, or for grounding other components, such as bracket antennas, frame antennas, etc. This metal layer can be called a ground plane, grounding plate, or grounding layer. In one embodiment, this metal layer can be formed by etching metal onto the surface of any dielectric substrate in PCB 17. In one embodiment, the grounding metal layer can be located on the side of the printed circuit board PCB 17 near the middle frame 19. In one embodiment, the edge of the printed circuit board PCB 17 can be considered as the edge of its ground plane. In one embodiment, the metal frame 19 can also be used for grounding the aforementioned components. The electronic device 100 may also have other ground planes / grounding layers, as previously described, and will not be repeated here.

[0105] Due to the compact nature of electronic devices, a ground plane / grounding layer is typically provided in the internal space 0-2mm from the inner surface of the frame (e.g., printed circuit boards, mid-frames, screen metal layers, batteries, etc. can all be considered part of the ground plane). In one embodiment, a medium is filled between the frame and the ground plane. The length and width of the rectangle formed by the inner surface contour of the filling medium can be simply considered as the length and width of the ground plane; alternatively, the length and width of the rectangle formed by the superimposed contour of all conductive parts inside the frame can be considered as the length and width of the ground plane.

[0106] The electronic device 100 may also include a battery (not shown in the figure). The battery may be disposed between the middle frame 19 and the back cover 21, or between the middle frame 19 and the display module 15; this embodiment does not limit this. In some embodiments, the PCB 17 is divided into a motherboard and a daughterboard, and the battery may be disposed between the motherboard and the daughterboard. The motherboard may be disposed between the middle frame 19 and the upper edge of the battery, and the daughterboard may be disposed between the middle frame 19 and the lower edge of the battery.

[0107] The electronic device 100 may also include a frame 11, which may include a conductive material such as metal. The frame 11 may be disposed between the display module 15 and the back cover 21 and extend circumferentially around the periphery of the electronic device 100. The frame 11 may have four sides surrounding the display module 15 to help secure the display module 15.

[0108] In one implementation, the frame 11, primarily composed of conductive material, can be referred to as the conductive frame or metal frame of the electronic device 100, suitable for industrial design (ID) with a metallic appearance. In another implementation, the outer surface of the frame 11 is primarily made of conductive material, such as metal, thus forming the appearance of a metallic frame. In these implementations, the conductive portion of the outer surface of the frame 11 can be used as an antenna radiator of the electronic device 100, and is commonly referred to as a frame antenna.

[0109] In another implementation, the outer surface of the frame 11 is primarily made of a non-conductive material, such as plastic, forming a non-metallic frame appearance suitable for non-metallic IDs. In another implementation, the inner surface of the frame 11 may include a conductive material, such as a metallic material. In this implementation, the conductive portion of the inner surface of the frame 11 can be used as an antenna radiator of the electronic device 100. It should be understood that the radiator (or the conductive material of the inner surface) disposed on the inner surface of the frame 11 can be attached to the non-conductive material of the frame 11 to minimize the volume occupied by the radiator and to be closer to the outside of the electronic device 100, achieving better signal transmission performance, and can also be referred to as a frame antenna. It should be noted that the antenna radiator being attached to the non-conductive material of the frame 11 means that the antenna radiator can be tightly attached to the inner surface of the non-conductive material, or it can be embedded inside the non-conductive material, or it can be close to the inner surface of the non-conductive material. For example, there can be a certain small gap between the antenna radiator and the inner surface of the non-conductive material. It should be understood that both the conductive material and the non-conductive material can be considered as part of the frame 11.

[0110] It should be understood that insulating gaps may be present on the frame 11, with the conductive portion of the frame between the insulating gaps and / or between the insulating gaps and the grounding point serving as radiators, thereby forming a frame antenna (it should be understood that the radiator of the frame antenna may also include the conductive portion of the frame between the grounding point and the grounding point). When the frame 11 is formed of a conductive material such as metal, the insulating gap can be understood as a gap in the frame 11 filled with a non-metallic material (insulating material), in which case the gap is visible on the outer surface. When the outer surface of the frame 11 is a non-conductive material, the insulating gap can be understood as the end of the radiator on the inner surface of the frame 11 (e.g., an end not electrically connected to other radiators or conductors), or as a gap formed between radiators on the inner surface of the frame 11, in which a non-metallic material (insulating material) may be provided, or it may not be provided with a non-metallic material, for example, filled with air, in which case the gap is not visible on the outer surface.

[0111] exist Figure 1 In subsequent embodiments, the electronic device 100's frame 11 is described using a metal frame (conductive frame) and a visible slit (an insulating slit visible on the surface). In this case, the metal frame serves as at least part of the antenna radiator. It should be understood that the same technical effect can be achieved when the electronic device 100's frame 11 is a non-metallic frame (a slit not visible on the surface), but for the sake of brevity, it will not be elaborated further.

[0112] The middle frame 19 may include the frame 11. The middle frame 19, including the frame 11, is a single unit that supports the electronic components in the device. The cover plate 13 and the rear cover 21 respectively cover the upper and lower edges of the frame to form the housing of the electronic device. In one embodiment, the cover plate 13, the rear cover 21, the frame 11, and / or the middle frame 19 may be collectively referred to as the housing of the electronic device 100. It should be understood that "housing" may refer to part or all of any one of the cover plate 13, the rear cover 21, the frame 11, or the middle frame 19, or to any combination of the cover plate 13, the rear cover 21, the frame 11, or the middle frame 19.

[0113] The frame 11 can at least partially serve as an antenna radiator to transmit / receive radio frequency signals. This portion of the frame serving as the radiator may have gaps between it and the rest of the middle frame 19, thereby ensuring a good radiation environment for the antenna radiator. In one embodiment, the middle frame 19 may have an aperture at this portion of the frame serving as the radiator to facilitate antenna radiation.

[0114] Alternatively, the frame 11 may not be considered part of the middle frame 19. In one embodiment, the frame 11 may be connected to and integrally formed with the middle frame 19. In another embodiment, the frame 11 may include inwardly extending protrusions to connect with the middle frame 19, for example, by means of spring clips, screws, welding, etc. The protrusions of the frame 11 can also be used to receive feed signals, so that at least a portion of the frame 11 acts as a radiator of the antenna to transmit / receive radio frequency signals. A gap may exist between this portion of the frame acting as the radiator and the middle frame 19, thereby ensuring that the antenna radiator has a good radiation environment, enabling the antenna to have good signal transmission capabilities.

[0115] The back cover 21 can be made of metal; it can also be made of non-conductive material, such as a glass back cover, a plastic back cover, or other non-metallic back cover; or it can be made of both conductive and non-conductive materials. In one embodiment, the back cover 21, which includes conductive material, can replace the middle frame 19 and form an integral part with the frame 11, providing support for the electronic components in the whole device.

[0116] In one embodiment, conductive portions in the mid-frame 19 and / or rear cover 21 can serve as a reference ground for the electronic device 100, wherein the frame 11, PCB 17, etc. of the electronic device can be grounded through electrical connection with the mid-frame.

[0117] The antenna of electronic device 100 can also be housed inside the casing, such as a bracket antenna, millimeter-wave antenna, etc. Figure 1 (Not shown in the image). The clearance of the antenna disposed within the housing can be obtained by a slot / aperture on any of the middle frame, and / or side frame, and / or back cover, and / or display screen, or by a non-conductive gap / aperture formed between any of them. The clearance configuration of the antenna can ensure the radiation characteristics of the antenna. It should be understood that the clearance of the antenna can be a non-conductive area formed by any conductive components within the electronic device 100, through which the antenna radiates signals to the external space. In one embodiment, the antenna 40 can be in the form of an antenna based on a flexible printed circuit (FPC). Laser direct forming Antenna types include laser-direct-structuring (LDS) antennas and microstrip disk antennas (MDA). In one embodiment, the antenna may also be a transparent structure embedded inside the screen of the electronic device 100, making the antenna a transparent antenna element embedded inside the screen of the electronic device 100.

[0118] Figure 1 The electronic device 100 is shown only schematically, and the actual shape, size, and construction of these components are not subject to change. Figure 1 limited.

[0119] It should be understood that in the embodiments of this application, the side where the display screen of the electronic device is located can be considered as the front, the side where the back cover is located as the back, and the side where the frame is located as the side.

[0120] In wireless communication systems, the quality and capability of the wireless communication link are directly related to the antenna gain, and array antenna technology facilitates the achievement of higher gains.

[0121] The main structural components of a PIFA (Pilot-Insulated Amplifier) ​​are a feed point and a ground point located on a planar conductor at a certain height above the ground. Due to its advantages such as simple impedance matching and small size, this type of antenna can be used as a sub-antenna in an antenna array. However, as the clearance of the array antenna decreases, its operating bandwidth becomes narrower, making it less suitable for the increasingly diverse communication frequency bands used by electronic devices.

[0122] This application provides an electronic device including an antenna. The antenna includes a first radiator and a second radiator, both having a first end grounded and a second end open. By adjusting the resonant frequency of the resonance generated by the first and second radiators, the antenna can operate in multiple different frequency bands.

[0123] Figure 2 This is a schematic diagram of an antenna 200 provided in an embodiment of this application. Figure 2 The antenna 200 shown can be applied to the electronic device 100 in the above embodiments.

[0124] It should be understood that the antenna 200 described in the embodiments of this application can also be understood as an antenna structure, and the antenna 200 can be understood as an antenna structure 200. For the sake of brevity, it will not be described in detail again.

[0125] like Figure 2 As shown, the electronic device 100 includes an antenna 200 and a floor 300.

[0126] Antenna 200 includes a first radiator 210 and a second radiator 220. In one embodiment, at least one of the feed circuit 230, the first switch 241, and the second switch 242 may be located on the PCB of electronic device 100. In one embodiment, antenna 200 may include feed circuit 230, first switch 241, and second switch 242. In one embodiment, the first radiator 210 and the second radiator 220 are attached to the back cover of electronic device 100 (e.g., the one described above). Figure 1 (See the back cover 21 shown). In one embodiment, the first radiator 210 and the second radiator 220 are attached to the insulating portion of the back cover of the electronic device 100.

[0127] It should be understood that "radiator 210 is attached to the back cover of electronic device 100" can mean that radiator 210 is located on the surface of the back cover, or is disposed on the surface of the back cover through other structural components, or is embedded in the back cover. Alternatively, "radiator 210 is attached to the back cover of electronic device 100" can also mean that in electronic device 100, radiator 210 is disposed adjacent to the back cover. Here, "adjacent" can be understood as, for example, the distance between the first radiator 210, the second radiator 220 and the back cover is within 5mm, or the distance between the first radiator 210, the second radiator 220 and the back cover 21 is within 3mm, 2mm, or 1mm. In one embodiment, the first radiator 210 and the second radiator 220 may be located on one side of the plane of the back cover. The term "attached to" in the embodiments of this application can be understood accordingly, and for the sake of brevity, it will not be elaborated further.

[0128] In one embodiment, the first radiator 210 and the second radiator 220 may be located inside the rear cover 21 (on the side closer to the PCB 17), such as... Figure 3 As shown. In one embodiment, the first radiator 210 and the second radiator 220 may be located between the back cover 21 and the PCB 17. In one embodiment, the electronic device 100 may further include a bracket 251. The first radiator 210 and the second radiator 220 are located on the surface of the bracket 251. In one embodiment, a shielding cover 15 may be provided between the bracket 251 and the PCB 17. In one embodiment, electronic components may be disposed within the shielding cover 15 to prevent mutual interference between the electronic components and the first radiator 210 and the second radiator 220.

[0129] It should be understood that when the first radiator 210 and the second radiator 220 are located inside the electronic device 100, since the first radiator 210 and the second radiator 220 are not located on the outer surface of the electronic device 100, a more flexible layout is possible.

[0130] In one embodiment, the first radiator 210 and the second radiator 220 may be located on the outside of the rear cover 21 (the side away from the PCB 17), such as... Figure 4 As shown.

[0131] In one embodiment, the first radiator 210 and the second radiator 220 may be disposed in the area surrounding the camera module 252 of the electronic device 100, such as... Figure 5 As shown.

[0132] It should be understood that when the first radiator 210 and the second radiator 220 are located outside the electronic device 100, the antenna 200 has a better radiation environment (e.g., a larger clearance and a greater distance from the electronic components mounted on the PCB17), and the antenna 200 has better radiation characteristics (e.g., radiation efficiency).

[0133] This application does not limit the specific position and method of the radiators (e.g., the first radiator 210 and the second radiator 220) being attached to the back cover of the electronic device 100. They can be implemented using LDS, transparent metal, FPC, copper foil, metal traces on a PCB, etc. The radiators described in this application are all understandable, and for the sake of brevity, they will not be described in detail.

[0134] In one embodiment, the first radiator 210 and the second radiator 220 may be located within the back cover 21. For example, the first radiator 210 and the second radiator 220 may be enclosed within a medium (e.g., glass, ceramic, plastic). The first radiator 210, the second radiator 220, and the medium may together form the back cover 21.

[0135] It should be understood that when the first radiator 210 and the second radiator 220 are disposed inside the rear cover 21, the radiation environment of the antenna 200 is better (e.g., larger clearance), and the antenna 200 has better radiation characteristics (e.g., radiation efficiency). Furthermore, the first radiator 210 and the second radiator 220 are not located on the exterior surface of the electronic device 100, which can increase the aesthetics.

[0136] In one embodiment, when the radiator (e.g., the first radiator 210, the second radiator 220) is disposed on the outside of the electronic device 100, the radiator can be coupled to the floor 300 or the power supply circuit 230 through indirect coupling via a metal piece (e.g., a metal spring) located on the inside of the electronic device 100.

[0137] It should be understood that the embodiments of this application do not limit the way the radiators (e.g., the first radiator 210, the second radiator 220) are coupled to the floor 300 or to the power supply circuit 230. The method can be determined according to actual production or design. For the sake of brevity, it will not be described in detail.

[0138] In one embodiment, the radiators (e.g., the first radiator 210 and the second radiator 220) may be sheet-like. The radiators (e.g., the first radiator 210 and the second radiator 220) may be of a regular shape (e.g., rectangular), such as... Figure 2 As shown. In one embodiment, the radiator (e.g., the first radiator 210, the second radiator 220) may also be an irregular shape (e.g., an irregular quadrilateral), such as... Figure 5 As shown.

[0139] It should be understood that the embodiments of this application do not limit the specific shape of the radiator in the antenna 200, and can be adjusted according to actual production or design. For the sake of brevity, the embodiments of this application only use rectangular or square radiators as examples for illustration, and will not be described in detail.

[0140] The first end of the first radiator 210 is a first open end 2101. The second end of the first radiator 210 is a first ground end 2102. In one embodiment, at least a portion of the first radiator 210 is spaced apart from the floor 300.

[0141] The first end of the second radiator 220 is a second open end 2201. The second end of the second radiator 220 is a second grounded end 2202. In one embodiment, at least a portion of the second radiator 220 is spaced apart from the floor 300.

[0142] The first radiator 210 includes a first feed point 211. The second radiator 220 includes a second feed point 212. The first feed point 211 and the second feed point 212 are used for coupling with a feed circuit 230. In one embodiment, the feed circuit 230 is coupled to the first feed point 211 and the second feed point 212, respectively.

[0143] It should be understood that the feed circuit 230 can be one radio frequency channel in the radio frequency IC (RF IC), coupled to the first feed point 211 and the second feed point 212 respectively through a power divider. Alternatively, the feed circuit 230 can be two radio frequency channels in the radio frequency IC (RF IC), coupled to the corresponding first feed point 211 and the second feed point 212 respectively through two radio frequency channels. Similarly, this can be understood when the antenna 200 includes more radiators. For the sake of brevity, the feed circuit 230 in the embodiments of this application can all be understood accordingly, and will not be described in detail.

[0144] The first grounding terminal 2102 includes a first grounding point 221. The first grounding point 221 is used for selective grounding via a first switch 241. In one embodiment, the first grounding point 221 is coupled to the floor 300 via the first switch 241.

[0145] It should be understood that the switches described in the embodiments of this application, such as "first switch 241," may include one or more switching devices. For example, multiple switching devices can be cascaded to achieve the above functions. In the embodiments of this application, the switches are only used to switch the electrical connection state between the first grounding point 221 and the floor 300, and their specific location and form are not limited. For the sake of brevity, the switches described in the embodiments of this application can all be understood accordingly, and will not be described in detail one by one.

[0146] The first grounding point 221 being selectively grounded via the first switch 241 can be understood as the first grounding point 221 being able to adjust the electrical connection state between the first grounding point 221 and the floor 300 via the first switch 241. For example, the first switch 241 can adjust the state of the first grounding point 221 and the floor 300 to be either conductive or unconducted. Alternatively, the first switch 241 can adjust the equivalent impedance between the first grounding point 221 and the floor 300. For the sake of brevity, similar descriptions in the embodiments of this application are also understood accordingly and will not be repeated here.

[0147] The second grounding terminal 2202 includes a second grounding point 222. The second grounding point 222 is used for selective grounding via a second switch 242. In one embodiment, the second grounding point 222 is coupled to the floor 300 via the second switch 242.

[0148] The minimum distance D between the first radiator 210 and the second radiator 220 is less than or equal to one-third of the dimension L1 of the first radiator 210 in the first direction. Furthermore, the minimum distance D between the first radiator 210 and the second radiator 220 is less than or equal to one-third of the dimension L2 of the second radiator 220 in the second direction.

[0149] The first direction is the direction from the first grounding terminal 2102 to the first open terminal 2101, for example, the z-direction. The second direction is the direction from the second grounding terminal 2202 to the second open terminal 2201, for example, the z-direction. In one embodiment, the first direction and the second direction may be the same. In another embodiment, the first direction and the second direction may be different.

[0150] It should be understood that the direction from the first end to the second end described in the embodiments of the application can be interpreted as passing through the midpoint of the edge corresponding to the first end and the midpoint of the edge corresponding to the second end. For the sake of brevity, the relevant descriptions in the embodiments of this application can all be understood accordingly, and will not be repeated one by one.

[0151] In one embodiment, the minimum distance D between the first radiator 210 and the second radiator 220 is less than or equal to one-fifth of the dimension L1 of the first radiator 210 in the first direction. Furthermore, the minimum distance D between the first radiator 210 and the second radiator 220 is less than or equal to one-fifth of the dimension L2 of the second radiator 220 in the second direction.

[0152] In one embodiment, the minimum distance D between the first radiator 210 and the second radiator 220 is less than or equal to one-tenth of the dimension L1 of the first radiator 210 in the first direction. Furthermore, the minimum distance D between the first radiator 210 and the second radiator 220 is less than or equal to one-tenth of the dimension L2 of the second radiator 220 in the second direction.

[0153] In one embodiment, the minimum distance D between the first radiator 210 and the second radiator 220 is less than or equal to 5 mm. In one embodiment, the minimum distance D between the first radiator 210 and the second radiator 220 is less than or equal to 3 mm. In one embodiment, the minimum distance D between the first radiator 210 and the second radiator 220 is less than or equal to 2 mm. In one embodiment, the minimum distance D between the first radiator 210 and the second radiator 220 is less than or equal to 1 mm.

[0154] According to embodiments of this application, both the first radiator 210 and the second radiator 220 have a structure where the first end is an open end and the second end is a grounded end. The first radiator 210 and the second radiator 220 can form a PIFA-like structure, exhibiting low profile characteristics (a small distance between the radiator and the ground 300, for example, less than or equal to 5 mm). Furthermore, the distance between the first radiator 210 and the second radiator 220 is relatively compact. The antenna 200 is convenient for placement within the increasingly space-constrained electronic device 100.

[0155] Meanwhile, the first radiator 210 and the second radiator 220 can be used as sub-antennas (similar to PIFA) in the antenna 200, thereby giving the antenna 200 better gain and improving the communication performance of the electronic device 100.

[0156] The electrical connection state between the first grounding point 221 (or the second grounding point 222) and the ground 300 can be switched by the first switch 241 (or the second switch 242) (e.g., the first grounding point 221 (or the second grounding point 222) is coupled or disconnected (not coupled) with the ground 300), and the operating frequency band of the antenna 200 can be adjusted so that the electronic device 100 has good communication performance in different operating frequency bands.

[0157] In one embodiment, when the first switch 241 is in a first switching state (e.g., the first ground point 221 is coupled to the floor 300), the first radiator 210 is used to generate a first resonance. In one embodiment, when the second switch 242 is in a second switching state (e.g., the second ground point 222 is coupled to the floor 300), the second radiator 220 is used to generate a second resonance. The resonant frequency bands of both the first and second resonances include the first operating frequency band.

[0158] In one embodiment, when the first switch 241 is in a third switching state (e.g., the first grounding point 221 is disconnected from the floor 300), the first radiator 210 is used to generate a third resonance. In one embodiment, when the second switch 242 is in a fourth switching state (e.g., the second grounding point 222 is disconnected from the floor 300), the second radiator 220 is used to generate a fourth resonance. The resonant frequency bands of both the third and fourth resonances include the second operating frequency band. The first and second operating frequency bands are different.

[0159] It should be understood that the aforementioned switch states can be interpreted as the switch's common port being connected to one of the multiple connection ports, or a state where it is not connected to any of the multiple connection ports. Different switch states of the same switch can be understood as the switch's common port being connected to different connection ports. Alternatively, different switch states of the same switch may include one switch state where the switch's common port is connected to one of the multiple connection ports, and another switch state where the switch's common port is connected to different connection ports. For the sake of brevity, similar descriptions in the embodiments of this application can be understood accordingly and will not be repeated here.

[0160] The electrical connection between the first grounding point 221 (or the second grounding point 222) and the floor 300 can be switched by the first switch (or the second switch 242), thereby adjusting the resonant frequency of the resonance generated by the first radiator 210 (or the second radiator 220).

[0161] In one embodiment, when the first switch state is that the first grounding point 221 is coupled to the ground 300, the second switch state is that the second grounding point 222 is coupled to the ground 300, and the third switch state is that the first grounding point 221 is disconnected from the ground 300 and the fourth switch state is that the second grounding point 222 is disconnected from the ground 300, the center frequency of the first operating frequency band is greater than (or, can also be understood as higher than) the center frequency of the second operating frequency band.

[0162] It should be understood that the circuit breaker described in the embodiments of this application can be interpreted as non-conduction, disconnection, etc. For example, a circuit breaker between the first grounding point 221 and the floor 300 can immediately mean that the first grounding point 221 and the floor 300 are not coupled. The first switch 241 is in the open state, and the common port of the first switch 241 (the port connected to the first grounding point 221) and the connection port (the port connected to the floor 300) are not conductive. For the sake of brevity, the circuit breakers described in the embodiments of this application can be understood accordingly.

[0163] The number of grounding points coupled between the first radiator 210 (or the second radiator 220) and the floor 300 can be switched by the first switch (or the second switch 242), thereby adjusting the resonant frequency of the resonance generated by the first radiator 210 (or the second radiator 220). As the number of grounding points coupled between the first radiator 210 (or the second radiator 220) and the floor 300 increases, the resonant frequency of the resonance generated by the first radiator 210 (or the second radiator 220) shifts towards higher frequencies.

[0164] In one embodiment, the first ground terminal 2102 may include multiple grounding points. In one embodiment, the multiple grounding points of the first ground terminal 2102 may include multiple first grounding points 221, such as... Figure 6 As shown.

[0165] In one embodiment, the second ground terminal 2202 may include multiple grounding points. In one embodiment, the multiple grounding points of the second ground terminal 2202 may include multiple second grounding points 222, such as... Figure 6 As shown.

[0166] It should be understood that as the grounding terminal includes a greater number of grounding points, the radiator has a better grounding effect at the grounding terminal (which can be understood as having a more stable coupling connection with the floor 300).

[0167] As the number of grounding points coupled to the floor via a switch increases, the resonance generated by the radiator can have a wider adjustment range. For example, the first grounding terminal 2102 includes two first grounding points 221. When one of the two first grounding points 221 is coupled to the floor 300, the first radiator 210 is used to generate a first resonance. When both first grounding points 221 are coupled to the floor 300, the first radiator 210 is used to generate a fifth resonance. The resonant frequencies of the first resonance and the fifth resonance are different. In one embodiment, the difference between the resonant frequencies of the first resonance and the fifth resonance is greater than or equal to one-tenth of the resonant frequency of the first resonance or one-tenth of the resonant frequency of the fifth resonance.

[0168] It should be understood that, for the sake of brevity, the number of grounding points coupled to the ground via a switch among the multiple grounding points of the grounding terminal in this application embodiment is not limited, and can be determined according to actual production or design, and will not be elaborated on one by one.

[0169] In one embodiment, the dimension L1 of the first radiator 210 in the first direction and the dimension L2 of the second radiator 220 in the second direction satisfy: L2×80%≤L1≤L2×120%.

[0170] It should be understood that with the increase of symmetry, the antenna 200 has better radiation characteristics. The electrical dimension of the radiator in the direction from the open end to the ground end (which can be understood as the first or second direction in the above embodiment) can be understood as the electrical length of the radiator. By adjusting the electrical length of the radiator, the resonant frequency of the resonance point generated by the radiator can be made different.

[0171] In one embodiment, the power supply circuit 230 further includes a phase shifting circuit 250. A first power supply point 211 is used to couple with the phase shifting circuit 250. In one embodiment, the phase shifting circuit 250 is coupled to the first power supply point 211.

[0172] In one embodiment, when the phase shifting circuit 250 is in the first phase shifting state, the phase difference between the phase of the electrical signal at the first feed point 211 and the phase of the electrical signal at the second feed point 212 is the first phase difference.

[0173] When the phase shifting circuit 250 is in the second phase shifting state, the phase difference between the phase of the electrical signal at the first feed point 211 and the phase of the electrical signal at the second feed point 212 is the second phase difference, which is different from the first phase difference and the second phase difference.

[0174] It should be understood that by adjusting the circuit state (phase shift state) of the phase shift circuit 250, the phase difference between the electrical signals fed into the first feed point 211 and the second feed point 212 can be made different, thereby adjusting the radiation characteristics of the antenna 200.

[0175] In one embodiment, when the phase-shifting circuit 250 is in a first phase-shifting state, the antenna 200 is used to generate a first radiation pattern. When the phase-shifting circuit 250 is in a second phase-shifting state, the antenna 200 is used to generate a second radiation pattern. The first and second radiation patterns are different.

[0176] The difference between the first radiation pattern and the second radiation pattern can be understood as the maximum radiation direction of the first radiation pattern being different from that of the second radiation pattern. In one embodiment, the angle between the maximum radiation directions of the first and second radiation patterns is greater than or equal to 15°. In another embodiment, the angle between the maximum radiation directions of the first and second radiation patterns is greater than or equal to 30°. In yet another embodiment, the angle between the maximum radiation directions of the first and second radiation patterns is greater than or equal to 45°.

[0177] It should be understood that the maximum radiation direction described in the embodiments of this application can be understood in one embodiment as the direction in which the maximum gain in the radiation pattern generated by the antenna is directed, in another embodiment as the direction in which the maximum gain in a continuous radiation area (within which the gain is greater than or equal to a threshold) in the radiation pattern generated by the antenna is directed, and in yet another embodiment as the direction in which the maximum gain in a preset radiation area (e.g., the top area of ​​an electronic device) in the radiation pattern generated by the antenna is directed (e.g., the antenna has multiple maximum radiation directions, one towards the top and one towards the back cover, assuming that the top is the main radiation area, and the back cover direction may have a single angle that exceeds the maximum gain of the main radiation area, but the maximum radiation direction described in the embodiments of this application only considers the direction in which the maximum gain in the main radiation area in the radiation pattern is directed).

[0178] In one embodiment, the angle between the maximum radiation direction of the first radiation pattern and the maximum radiation direction of the second radiation pattern is less than or equal to 120°. In another embodiment, the angle between the maximum radiation direction of the first radiation pattern and the maximum radiation direction of the second radiation pattern is less than or equal to 90°. Both the first and second radiation patterns can be understood accordingly in the embodiments of this application, and for the sake of brevity, they will not be described in detail further.

[0179] It should be understood that by adjusting the phase shift circuit 250 to the first phase shift state or the second phase shift state, the antenna 200 can have good radiation characteristics in different angular ranges.

[0180] When the angle between the maximum radiation direction of the first radiation pattern and the maximum radiation direction of the second radiation pattern is greater than a certain range, the antenna 200 can maintain good radiation characteristics over a larger angle range by switching the first or second phase-shifting state of the phase-shifting circuit 250. When the angle between the maximum radiation direction of the first radiation pattern and the maximum radiation direction of the second radiation pattern is less than a certain range, the antenna 200 can maintain good radiation characteristics over a continuous angle range by switching the first or second phase-shifting state of the phase-shifting circuit 250, without any angles with poor radiation characteristics within that range.

[0181] Furthermore, since the phase difference between the electrical signal at the first feed point 211 and the electrical signal at the second feed point 212 differs under different phase shift states, and since the impedance of the radiator (e.g., the impedance at the first feed point 211, or the impedance at the second feed point 212) is related to the phase of the fed electrical signal, in one embodiment, the antenna may further include a matching circuit coupled between the feed point and the phase shift circuit 250. The matching circuit can be adjusted when signals with different phase differences are fed in, so that the antenna 200 has better radiation characteristics.

[0182] In one embodiment, the phase-shifting circuit 250 can also be in a third phase-shifting state, where the phase difference between the phase of the electrical signal at the first feed point 211 and the phase of the electrical signal at the second feed point 212 is the third phase difference. The first phase difference, the second phase difference, and the third phase difference are different. In one embodiment, the radiator 210 is used to generate a third radiation pattern. The first radiation pattern, the second radiation pattern, and the third radiation pattern are all different.

[0183] It should be understood that the phase-shifting circuit 250 may include multiple phase-shifting states, enabling the radiator 210 to generate multiple different radiation patterns. This allows the antenna 200 to switch between different radiation patterns via the phase-shifting circuit 250, achieving good radiation characteristics over a wider angular range. For the sake of brevity, this embodiment only uses two different phase-shifting states of the phase-shifting circuit 250 as an example. In actual production or design, the phase-shifting circuit 250 may include multiple phase-shifting states, and this embodiment does not impose any limitations on this.

[0184] In one embodiment, antenna 200 may further include element 240, such as Figure 6 As shown. The grounding point can be selectively coupled to element 240 via a switch. In one embodiment, element 240 is coupled between the grounding point and floor 300 via a switch. In one embodiment, a first element is coupled between a first grounding point 221 and floor 300 via a first switch 241. In one embodiment, a second element is coupled between a second grounding point 222 and floor 300 via a second switch 242.

[0185] It should be understood that by coupling element 240 between the ground point and the ground 300 via a switch, the radiation characteristics of the antenna 200 (e.g., the resonant frequency of the resonance generated by the radiator) have a greater range of adjustment when the ground point and the ground 300 are in different states (e.g., on or off). In one embodiment, element 240 may be coupled between the switch and the ground 300. In another embodiment, element 240 may be coupled between the switch and the ground point.

[0186] In one embodiment, the first grounding terminal 2102 and the second grounding terminal 2202 are located on the first side of the virtual connection, and the first open terminal 2101 and the second open terminal 2201 are located on the second side of the virtual connection, such as... Figure 2 and Figure 6 As shown. The virtual connection is the line connecting the center of the first radiator 210 (which can be understood as the geometric center) and the center of the second radiator 220.

[0187] It should be understood that in the above embodiments, the first radiator 210 and the second radiator 220 can be understood as being arranged in an alternating (parallel) configuration. In one embodiment, the distance between the first ends of the first grounding terminal 2102 and the second grounding terminal 2202 is less than the distance between the first end of the first grounding terminal 2102 and the second end of the second radiator 220 (the open ends and grounding ends of the radiators are close to each other). The first radiator 210 and the second radiator 220 do not overlap along the first direction or the second direction.

[0188] In one embodiment, the first grounding terminal 2102 and the first open terminal 2101 are opposite to each other but do not contact each other, such as Figure 7 As shown. In one embodiment, the first radiator 210 and the second radiator 220 overlap along a first direction or a second direction.

[0189] In one embodiment, the first grounding terminal 2102 and the second grounding terminal 2202 are opposite to each other but do not contact each other, such as Figure 8 As shown. In one embodiment, the first radiator 210 and the second radiator 220 overlap along a first direction or a second direction.

[0190] It should be understood that in the above embodiments, the first radiator 210 and the second radiator 220 can be understood as being arranged in series.

[0191] In one embodiment, the first direction and the second direction are substantially parallel (the angle between the first direction and the second direction is less than or equal to 30°).

[0192] In one embodiment, the minimum distance between the second grounding terminal 2202 and the first radiator 210 is less than the minimum distance between the second open terminal 2201 and the first radiator 210, such as... Figure 9 As shown. In one embodiment, the first radiator 210 and the second radiator 220 at least partially overlap along a first direction, and the first radiator 210 and the second radiator 220 do not overlap along a second direction.

[0193] It should be understood that in the above embodiments, the first radiator 210 and the second radiator 220 can be understood as being orthogonally arranged.

[0194] In one embodiment, the first direction and the second direction are substantially perpendicular (the angle between the first direction and the second direction is less than or equal to 120° and greater than or equal to 60°).

[0195] It should be understood that in the structure of the above embodiment, the first open end 2101 and the second open end 2201 are far apart from each other (the distance between the first open end 2101 and the second open end 2201 is greater than or equal to the distance between the first open end 2101 and the second ground end 2202, or the distance between the second open end 2201 and the first ground end 2102), or the first open end 2101 and the second open end 2201 face the same side. In the above junction structure, the coupling between the first radiator 210 and the second radiator 220 is weak, and the interference between the first radiator 210 and the second radiator 220 is small, which is beneficial to improving the performance of the antenna 200.

[0196] In one embodiment, the electronic device 100 may further include a dielectric substrate. The dielectric substrate is spaced apart from radiators (e.g., a first radiator 210 and a second radiator 220). In one embodiment, the radiators are located between the dielectric substrate and the PCB of the electronic device. In one embodiment, the dielectric substrate is a back cover of the electronic device 100.

[0197] It should be understood that the dielectric substrate can be used to adjust the radiation characteristics of the antenna 200 (e.g., the maximum radiation direction in the radiation pattern, gain, etc.) to give the antenna 200 a more flexible adjustment method. For example, the dielectric substrate can have different thicknesses in different areas, thereby adjusting the radiation characteristics of the antenna 200.

[0198] In one embodiment, the electronic device 100 may further include a metasurface array. The metasurface array is located on a dielectric substrate.

[0199] It should be understood that metasurface arrays can be used to more flexibly adjust the radiation characteristics of the antenna 200.

[0200] In one embodiment, antenna 200 may include a greater number of radiators, such as Figures 10 to 15 As shown.

[0201] In one embodiment, the open ends of multiple radiators can face the same side, such as... Figure 10 As shown, multiple radiators can be arranged in an alternating (parallel) pattern.

[0202] In one embodiment, multiple radiators can be arranged along the same straight line, such as... Figure 11 As shown. Multiple radiators can be arranged in series.

[0203] In one embodiment, multiple radiators can be arranged in an array, such as Figure 12 and Figure 13 As shown. For example, multiple radiators can be arranged in a 2×2 array or a 3×3 array. Multiple radiators can simultaneously have the characteristics of staggered (parallel) and serial arrangement.

[0204] In one embodiment, the multiple radiators can be arranged in different ways, such as Figure 14 As shown. Parts of multiple radiators can be arranged in an alternating (parallel) manner. Parts of multiple radiators can be arranged in a sequential (serial) manner. Parts of multiple radiators can be arranged orthogonally.

[0205] In one embodiment, multiple radiators can also be arranged in a cross shape, such as... Figure 15 As shown. Parts of multiple radiators can be arranged in an alternating (parallel) manner. Parts of multiple radiators can also be arranged in a sequential manner.

[0206] It should be understood that, for the sake of brevity, this application embodiment only uses the antenna described in the above embodiment as an example for explanation. In actual production or design, the antenna may include more or fewer (e.g., 3) radiators, and the arrangement of the radiators can be adjusted according to the actual layout space. This application embodiment does not limit this and will not elaborate further.

[0207] In one embodiment, when the antenna includes a larger number of radiators, the feeding circuit may include multiple phase-shifting circuits. These multiple phase-shifting circuits are cascaded to feed electrical signals of different phases to the feeding points of the multiple radiators, such as... Figure 10 As shown.

[0208] In one embodiment, when the antenna includes a larger number of radiators, the feeding circuit may include a phase-shifting circuit. This phase-shifting circuit is coupled to the feed points of the multiple radiators through different ports, feeding electrical signals of different phases to the radiators through these ports, such as... Figure 11 As shown.

[0209] It should be understood that the embodiments of this application do not limit the application scenarios and methods of implementing the phase-shifting circuit, and can be determined according to actual production or design. For the sake of brevity, they will not be described in detail.

[0210] In one embodiment, when the antenna includes a larger number of radiators, circular polarization can be achieved by feeding electrical signals of different phases to the radiators. For example, when the radiators are such as Figure 12 In the arrangement shown, the phase difference between the electrical signals at the feed points of the feed radiator is approximately 90°, which can give the antenna 200 good circular polarization characteristics.

[0211] It should be understood that in actual production or design, the phase of the electrical signal at the feed point of the radiator can be adjusted according to the number of radiators in order to make the antenna have better radiation characteristics. For the sake of brevity, this will not be elaborated on further.

[0212] Figure 16 and Figure 17 yes Figure 2 The simulation results of the S-parameters of the antenna 200 in the electronic device 100 shown are presented. Among them, Figure 16 The results are the S-parameter simulation results of antenna 200 under the condition that the first grounding point, the second grounding point and the ground are coupled to the ground. Figure 17 The results are the S-parameter simulation results of antenna 200 under the condition that the first grounding point, the second grounding point and the ground are disconnected from the ground.

[0213] like Figure 16 As shown, when the first grounding point and the second grounding point are coupled to the ground, the resonances generated by the first radiator and the second radiator are located around 4.1 GHz, which can correspond to the first resonance and the second resonance in the above embodiment. The resonant frequency bands of the resonances generated by the first radiator and the second radiator are approximately the same.

[0214] like Figure 17 As shown, when the first and second grounding points are disconnected from the floor, the resonances generated by the first and second radiators are located around 4 GHz, which can correspond to the third and fourth resonances in the above embodiments. The resonant frequency bands of the resonances generated by the first and second radiators are approximately the same.

[0215] like Figure 16 and Figure 17 As shown, as the number of grounding points coupled to the floor increases, the resonant frequency of the resonance generated by the radiator shifts to lower frequencies.

[0216] Figures 18 to 21 yes Figure 10 The radiation pattern of the antenna 200 in the electronic device 100 shown.

[0217] It should be understood that Figure 18 This is the radiation pattern of antenna 200 when the phase-shifting circuit is in the first phase-shifting state. Figure 19 This is the radiation pattern of antenna 200 when the phase-shifting circuit is in the second phase-shifting state. Figure 20 This is the radiation pattern of antenna 200 when the phase-shifting circuit is in the third phase-shifting state.

[0218] Figure 21 This is the radiation pattern of antenna 200 when the phase-shifting circuit is in the fourth phase-shifting state. The first, second, third, and fourth phase-shifting states are different. Correspondingly, in different phase-shifting states, the phase difference between the electrical signals fed into the feed points of the four radiators is different.

[0219] like Figures 18 to 21 As shown, the antenna produces different radiation patterns when the phase-shifting circuit is in different phase-shifting states. The maximum radiation direction of the antenna's radiation pattern can also be different.

[0220] Therefore, by adjusting the phase-shifting circuit, the radiation pattern generated by the antenna can be adjusted, thereby enabling the antenna to have good radiation characteristics at different angles.

[0221] Figure 22 This is a schematic diagram of another antenna 200 provided in an embodiment of this application. Figure 2 The antenna 200 shown can be applied to the electronic device 100 in the above embodiments.

[0222] It should be understood that the antenna 200 described in the embodiments of this application can also be understood as an antenna structure, and the antenna 200 can be understood as an antenna structure 200. For the sake of brevity, it will not be described in detail again.

[0223] like Figure 22 As shown, the electronic device 100 includes an antenna 200 and a floor 300.

[0224] Antenna 200 includes a first radiator 210 and a second radiator 220. In one embodiment, at least one of the feed circuit 230, the first tuning circuit 261, and the second tuning circuit 262 may be located on the PCB of the electronic device 100. In one embodiment, antenna 200 may include feed circuit 230, first tuning circuit 261, and second tuning circuit 262.

[0225] In one embodiment, the first radiator 210 and the second radiator 220 are attached to the back cover of the electronic device 100 (e.g., the one described above). Figure 1 (See the back cover 21 shown). In one embodiment, the first radiator 210 and the second radiator 220 are attached to the insulating portion of the back cover of the electronic device 100.

[0226] In one embodiment, the first radiator 210 and the second radiator 220 may be located inside the back cover 21 (near the PCB 17). In another embodiment, the first radiator 210 and the second radiator 220 may be located between the back cover and the PCB. In yet another embodiment, the electronic device 100 may further include a bracket. The first radiator 210 and the second radiator 220 are located on the surface of the bracket.

[0227] It should be understood that when the first radiator 210 and the second radiator 220 are located inside the electronic device 100, since the first radiator 210 and the second radiator 220 are not located on the outer surface of the electronic device 100, a more flexible layout is possible.

[0228] In one embodiment, the first radiator 210 and the second radiator 220 may be located on the outside of the back cover (away from the PCB).

[0229] In one embodiment, the first radiator 210 and the second radiator 220 may be disposed in the area surrounding the camera module of the electronic device 100.

[0230] It should be understood that when the first radiator 210 and the second radiator 220 are disposed outside the electronic device 100, the radiation environment of the antenna 200 is better (e.g., larger clearance and greater distance from the electronic components disposed on the PCB), and the antenna 200 has better radiation characteristics (e.g., radiation efficiency).

[0231] This application does not limit the specific position and method of the radiators (e.g., the first radiator 210 and the second radiator 220) being attached to the back cover of the electronic device 100. They can be implemented using LDS, transparent metal, FPC, copper foil, metal traces on a PCB, etc. The radiators described in this application are all understandable, and for the sake of brevity, they will not be described in detail.

[0232] In one embodiment, when the radiator (e.g., the first radiator 210, the second radiator 220) is disposed on the outside of the electronic device 100, the radiator can be coupled to the floor 300 or the power supply circuit 230 through indirect coupling via a metal piece (e.g., a metal spring) located on the inside of the electronic device 100.

[0233] It should be understood that the embodiments of this application do not limit the way the radiators (e.g., the first radiator 210, the second radiator 220) are coupled to the floor 300 or to the power supply circuit 230. The method can be determined according to actual production or design. For the sake of brevity, it will not be described in detail.

[0234] In one embodiment, the radiators (e.g., the first radiator 210 and the second radiator 220) can be of a regular shape (e.g., a rectangle). In another embodiment, the radiators (e.g., the first radiator 210 and the second radiator 220) can also be of an irregular shape (e.g., an irregular quadrilateral).

[0235] It should be understood that the embodiments of this application do not limit the specific shape of the radiator in the antenna 200, and can be adjusted according to actual production or design. For the sake of brevity, the embodiments of this application only use rectangular or square radiators as examples for illustration, and will not be described in detail.

[0236] The first end of the first radiator 210 is a first open end 2101. The second end of the first radiator 210 is a first ground end 2102. In one embodiment, at least a portion of the first radiator 210 is spaced apart from the floor 300.

[0237] The first end of the second radiator 220 is a second open end 2201. The second end of the second radiator 220 is a second grounded end 2202. In one embodiment, at least a portion of the second radiator 220 is spaced apart from the floor 300.

[0238] It should be understood that, Figure 22 and Figure 23 In the illustrated electronic device, the grounding terminal can be coupled to the ground 300 through multiple grounding points. Alternatively, the grounding terminal can also be coupled to the ground 300 through at least some or all of the corresponding edges.

[0239] The first radiator 210 includes a first feed point 211. The second radiator 220 includes a second feed point 212. The first feed point 211 and the second feed point 212 are used for coupling with a feed circuit 230. In one embodiment, the feed circuit 230 is coupled to the first feed point 211 and the second feed point 212, respectively.

[0240] It should be understood that the feed circuit 230 can be one radio frequency channel in the radio frequency IC (RF IC), coupled to the first feed point 211 and the second feed point 212 respectively through a power divider. Alternatively, the feed circuit 230 can be two radio frequency channels in the radio frequency IC (RF IC), coupled to the corresponding first feed point 211 and the second feed point 212 respectively through two radio frequency channels. Similarly, this can be understood when the antenna 200 includes more radiators. For the sake of brevity, the feed circuit 230 in the embodiments of this application can all be understood accordingly, and will not be described in detail.

[0241] The first radiator 210 includes a first tuning point 271. The first tuning point 271 is used for coupling with a first tuning circuit 261. In one embodiment, the first tuning point 271 is coupled to the first tuning circuit 261.

[0242] It should be understood that the first tuning circuit 261 described in the embodiments of this application can be understood as a circuit that can adjust the equivalent impedance between the first tuning point 271 and the ground plane 300. For example, the first tuning point 271 may include a switch and at least one component. The first tuning point 271 can adjust the equivalent impedance between the first tuning point 271 and the ground plane 300 by adjusting the component coupled to the first tuning point 271 (or, the component may not be coupled). In one embodiment, the component may be coupled between the switch and the ground plane 300. In one embodiment, the component may be coupled between the switch and the first tuning point 271. In one embodiment, the first tuning circuit 261 may also be a variable component, such as a variable capacitor or a variable inductor. The embodiments of this application do not limit the specific structure of the first tuning circuit 261, which can be determined according to actual production or design. For the sake of brevity, the embodiments of this application only use the example of the first tuning circuit 261 including a switch and a component, and will not be described in detail.

[0243] Furthermore, the tuning circuits described in the embodiments of this application can all be understood accordingly, and for the sake of brevity, they will not be described in detail.

[0244] The second ground terminal 2202 includes a second tuning point 272. The second tuning point 272 is used for coupling with the second tuning circuit 262. In one embodiment, the second tuning point 272 is coupled to the second tuning circuit 262.

[0245] The minimum distance D between the first radiator 210 and the second radiator 220 is less than or equal to one-third of the dimension L1 of the first radiator 210 in the first direction. Furthermore, the minimum distance D between the first radiator 210 and the second radiator 220 is less than or equal to one-third of the dimension L2 of the second radiator 220 in the second direction.

[0246] The first direction is the direction from the first grounding terminal 2102 to the first open terminal 2101, for example, the z-direction. The second direction is the direction from the second grounding terminal 2202 to the second open terminal 2201, for example, the z-direction. In one embodiment, the first direction and the second direction may be the same. In another embodiment, the first direction and the second direction may be different.

[0247] In one embodiment, the minimum distance D between the first radiator 210 and the second radiator 220 is less than or equal to one-fifth of the dimension L1 of the first radiator 210 in the first direction. Furthermore, the minimum distance D between the first radiator 210 and the second radiator 220 is less than or equal to one-fifth of the dimension L2 of the second radiator 220 in the second direction.

[0248] In one embodiment, the minimum distance D between the first radiator 210 and the second radiator 220 is less than or equal to one-tenth of the dimension L1 of the first radiator 210 in the first direction. Furthermore, the minimum distance D between the first radiator 210 and the second radiator 220 is less than or equal to one-tenth of the dimension L2 of the second radiator 220 in the second direction.

[0249] In one embodiment, the minimum distance D between the first radiator 210 and the second radiator 220 is less than or equal to 5 mm. In one embodiment, the minimum distance D between the first radiator 210 and the second radiator 220 is less than or equal to 3 mm. In one embodiment, the minimum distance D between the first radiator 210 and the second radiator 220 is less than or equal to 2 mm. In one embodiment, the minimum distance D between the first radiator 210 and the second radiator 220 is less than or equal to 1 mm.

[0250] The minimum distance D1 between the first tuning point 271 and the first ground terminal 2102 is greater than or equal to one-third of the dimension L1 of the first radiator 210 in the first direction. In one embodiment, the minimum distance D1 between the first tuning point 271 and the first ground terminal 2102 is greater than or equal to one-half of the dimension L1 of the first radiator 210 in the first direction.

[0251] The minimum distance D1 between the first tuning point 271 and the first grounding terminal 2102 can be understood as the minimum distance between any one of the grounding points, including the first tuning point 271 and the first grounding terminal 2102. Alternatively, the minimum distance D1 between the first tuning point 271 and the first grounding terminal 2102 can also be understood as the minimum distance between the edges of the first radiator 210 corresponding to the first grounding terminal 2102. Similar concepts described in the embodiments of this application can be understood accordingly, and for the sake of brevity, they will not be elaborated further.

[0252] The minimum distance D2 between the second tuning point 272 and the second ground terminal 2202 is greater than or equal to one-third of the dimension L2 of the second radiator 220 in the second direction. In one embodiment, the minimum distance D2 between the second tuning point 272 and the second ground terminal 2202 is greater than or equal to one-half of the dimension L2 of the second radiator 220 in the second direction.

[0253] In one embodiment, the minimum distance between the first tuning point 271 and the first open end 2101 is less than or equal to half of the dimension L1 of the first radiator 210 in the first direction. In another embodiment, the minimum distance between the first tuning point 271 and the first open end 2101 is less than or equal to one-third of the dimension L1 of the first radiator 210 in the first direction.

[0254] The minimum distance D1 between the first tuning point 271 and the first open end 2101 can be understood as the minimum distance between the first tuning point 271 and the edge of the first radiator 210 corresponding to the first open end 210. Similar concepts described in the embodiments of this application can be understood accordingly, and for the sake of brevity, they will not be elaborated on one by one.

[0255] In one embodiment, the minimum distance between the second tuning point 272 and the second open end 2201 is less than or equal to half of the dimension L2 of the second radiator 220 in the second direction. In another embodiment, the minimum distance between the second tuning point 272 and the second open end 2201 is less than or equal to one-third of the dimension L2 of the second radiator 220 in the second direction.

[0256] It should be understood that when the tuning circuit is close to the ground terminal, because the ground terminal usually has a weak electric field, the resonant frequency adjustment range of the radiator generated during the same tuning circuit switching process is smaller. When the tuning circuit is close to the open terminal, because the open terminal usually has a weak electric field, the resonant frequency adjustment range of the radiator generated during the same tuning circuit switching process is larger.

[0257] According to embodiments of this application, both the first radiator 210 and the second radiator 220 have a structure where the first end is an open end and the second end is a grounded end. The first radiator 210 and the second radiator 220 can form a PIFA-like structure, exhibiting low profile characteristics (a small distance between the radiator and the ground 300, for example, less than or equal to 5 mm). Furthermore, the distance between the first radiator 210 and the second radiator 220 is relatively compact. The antenna 200 is convenient for placement within the increasingly space-constrained electronic device 100.

[0258] Meanwhile, the first radiator 210 and the second radiator 220 can be used as sub-antennas (similar to PIFA) in the antenna 200, thereby giving the antenna 200 better gain and improving the communication performance of the electronic device 100.

[0259] The equivalent impedance between the first tuning point 271 (or the second tuning point 272) and the ground 300 can be switched by the first tuning circuit 261 (or the second tuning circuit 262), thereby adjusting the operating frequency band of the antenna 200, so that the electronic device 100 has good communication performance in different operating frequency bands.

[0260] Figure 22 The electronic device 100 shown is Figures 2 to 15 The only difference between the electronic devices 100 shown is the method of adjusting the operating frequency band of the antenna 200. Figures 2 to 15In the illustrated electronic device 100, by adjusting the number of grounding points coupled to the ground plane 300 at the grounding terminal of the radiator, the resonant frequency of the radiator's resonance is switched, thereby allowing the antenna 200 to operate in different frequency bands. Figure 22 In the electronic device 100 shown, the resonant frequency of the radiator is switched by adjusting the equivalent impedance between the first tuning point of the radiator and the ground 300, thereby enabling the antenna 200 to operate in different frequency bands.

[0261] In one embodiment, when the first tuning circuit 261 is in a first circuit state, the first radiator 210 is used to generate a first resonance. In one embodiment, when the second tuning circuit is in a second circuit state, the second radiator 220 is used to generate a second resonance. The resonant frequency bands of both the first and second resonances include the first operating frequency band.

[0262] In one embodiment, when the first tuning circuit is in the third circuit state, the first radiator 210 is used to generate a third resonance. In one embodiment, when the second tuning circuit is in the fourth circuit state, the second radiator 220 is used to generate a fourth resonance. The resonant frequency bands of both the third and fourth resonances include the second operating frequency band, and the center frequency of the first operating frequency band is greater than (or, can also be understood as higher than) the center frequency of the second operating frequency band.

[0263] In one embodiment, the power supply circuit 230 further includes a phase shifting circuit 250, such as Figure 23 As shown. The first feed point 211 is used for coupling with the phase shift circuit 250. In one embodiment, the phase shift circuit 250 is coupled to the first feed point 211.

[0264] In one embodiment, when the phase shifting circuit 250 is in the first phase shifting state, the phase difference between the phase of the electrical signal at the first feed point 211 and the phase of the electrical signal at the second feed point 212 is the first phase difference.

[0265] When the phase shifting circuit 250 is in the second phase shifting state, the phase difference between the phase of the electrical signal at the first feed point 211 and the phase of the electrical signal at the second feed point 212 is the second phase difference, which is different from the first phase difference and the second phase difference.

[0266] It should be understood that by adjusting the circuit state (phase shift state) of the phase shift circuit 250, the phase difference between the electrical signals fed into the first feed point 211 and the second feed point 212 can be made different, thereby adjusting the radiation characteristics of the antenna 200.

[0267] In one embodiment, when the phase-shifting circuit 250 is in a first phase-shifting state, the antenna 200 is used to generate a first radiation pattern. When the phase-shifting circuit 250 is in a second phase-shifting state, the antenna 200 is used to generate a second radiation pattern. The first and second radiation patterns are different.

[0268] The difference between the first radiation pattern and the second radiation pattern can be understood as the maximum radiation direction of the first radiation pattern being different from that of the second radiation pattern. In one embodiment, the angle between the maximum radiation directions of the first and second radiation patterns is greater than or equal to 15°. In another embodiment, the angle between the maximum radiation directions of the first and second radiation patterns is greater than or equal to 30°. In yet another embodiment, the angle between the maximum radiation directions of the first and second radiation patterns is greater than or equal to 45°.

[0269] In one embodiment, the angle between the maximum radiation direction of the first radiation pattern and the maximum radiation direction of the second radiation pattern is less than or equal to 120°. In another embodiment, the angle between the maximum radiation direction of the first radiation pattern and the maximum radiation direction of the second radiation pattern is less than or equal to 90°. Both the first and second radiation patterns can be understood accordingly in the embodiments of this application, and for the sake of brevity, they will not be described in detail further.

[0270] It should be understood that by adjusting the phase shift circuit 250 to the first phase shift state or the second phase shift state, the antenna 200 can have good radiation characteristics in different angular ranges.

[0271] When the angle between the maximum radiation direction of the first radiation pattern and the maximum radiation direction of the second radiation pattern is greater than a certain range, the antenna 200 can maintain good radiation characteristics over a larger angle range by switching the first or second phase-shifting state of the phase-shifting circuit 250. When the angle between the maximum radiation direction of the first radiation pattern and the maximum radiation direction of the second radiation pattern is less than a certain range, the antenna 200 can maintain good radiation characteristics over a continuous angle range by switching the first or second phase-shifting state of the phase-shifting circuit 250, without any angles with poor radiation characteristics within that range.

[0272] Furthermore, since the phase difference between the electrical signal at the first feed point 211 and the electrical signal at the second feed point 212 differs under different phase shift states, and since the impedance of the radiator (e.g., the impedance at the first feed point 211, or the impedance at the second feed point 212) is related to the phase of the fed electrical signal, in one embodiment, the antenna may further include a matching circuit coupled between the feed point and the phase shift circuit 250. The matching circuit can be adjusted when signals with different phase differences are fed in, so that the antenna 200 has better radiation characteristics.

[0273] In one embodiment, the phase-shifting circuit 250 can also be in a third phase-shifting state, where the phase difference between the phase of the electrical signal at the first feed point 211 and the phase of the electrical signal at the second feed point 212 is the third phase difference. The first phase difference, the second phase difference, and the third phase difference are different. In one embodiment, the radiator 210 is used to generate a third radiation pattern. The first radiation pattern, the second radiation pattern, and the third radiation pattern are all different.

[0274] It should be understood that the phase-shifting circuit 250 may include multiple phase-shifting states, enabling the radiator 210 to generate multiple different radiation patterns. This allows the antenna 200 to switch between different radiation patterns via the phase-shifting circuit 250, achieving good radiation characteristics over a wider angular range. For the sake of brevity, this embodiment only uses two different phase-shifting states of the phase-shifting circuit 250 as an example. In actual production or design, the phase-shifting circuit 250 may include multiple phase-shifting states, and this embodiment does not impose any limitations on this.

[0275] For the sake of brevity, Figure 22 and Figure 23 The electronic device 100 shown is Figures 2 to 15 Similar parts of the electronic device 100 shown will not be described in detail. These similar parts include: the relative relationship between the dimension L1 of the first radiator 210 in the first direction and the dimension L2 of the second radiator 220 in the second direction; the arrangement of the first radiator 210 and the second radiator 220; the arrangement of the radiators when the antenna 200 includes more radiators; the ability of the dielectric substrate (e.g., a back cover) to adjust the radiation characteristics of the antenna 200; and the implementation of circular polarization of the antenna 200.

[0276] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An antenna structure, characterized in that, include: A first radiator, wherein a first end of the first radiator is a first open end, and a second end of the first radiator is a first grounded end; The second radiator has a first end that is a second open end and a second end that is a second grounded end. Wherein, the first radiator includes a first feed point, the second radiator includes a second feed point, and the first feed point and the second feed point are used to couple with the feed circuit; The first grounding terminal includes a first grounding point, which is used to selectively ground via a first switch; The second grounding terminal includes a second grounding point, which is used to selectively ground via a second switch; The minimum distance between the first radiator and the second radiator is less than or equal to one-third of the size of the first radiator in a first direction and less than or equal to one-third of the size of the second radiator in a second direction, wherein the first direction is the direction from the first grounding end to the first open end, and the second direction is the direction from the second grounding end to the second open end.

2. The antenna structure according to claim 1, characterized in that, When the first switch is in the first switch state and the second switch is in the second switch state, the first radiator is used to generate a first resonance and the second radiator is used to generate a second resonance. The resonance frequency band of the first resonance and the resonance frequency band of the second resonance both include the first operating frequency band. When the first switch is in the third switch state and the second switch is in the fourth switch state, the first radiator is used to generate the third resonance and the second radiator is used to generate the fourth resonance. The resonant frequency band of the third resonance and the resonant frequency band of the fourth resonance both include the second operating frequency band. The first operating frequency band and the second operating frequency band are different.

3. The antenna structure according to claim 1 or 2, characterized in that, The power supply circuit further includes a phase shifting circuit, and the first power supply point is used to couple with the phase shifting circuit. When the phase-shifting circuit is in the first phase-shifting state, the phase difference between the phase of the electrical signal at the first feed point and the phase of the electrical signal at the second feed point is the first phase difference; When the phase shifting circuit is in the second phase shifting state, the phase difference between the phase of the electrical signal at the first feed point and the phase of the electrical signal at the second feed point is the second phase difference, and the first phase difference and the second phase difference are different.

4. The antenna structure according to claim 3, characterized in that, When the phase-shifting circuit is in the first phase-shifting state, the antenna is used to generate a first radiation pattern; When the phase-shifting circuit is in the second phase-shifting state, the antenna is used to generate a second radiation pattern, which is different from the first radiation pattern.

5. The antenna structure according to any one of claims 1 to 4, characterized in that, The first grounding terminal and the second grounding terminal are opposite to each other and do not touch each other.

6. The antenna structure according to any one of claims 1 to 4, characterized in that, The first open terminal and the second ground terminal are opposite to each other and do not touch.

7. The antenna structure according to any one of claims 1 to 4, characterized in that, The first grounding terminal and the second grounding terminal are located on the first side of the virtual connection, and the first open terminal and the second open terminal are located on the second side of the virtual connection. The virtual connection is the line connecting the center of the first radiator and the center of the second radiator.

8. The antenna structure according to any one of claims 1 to 4, characterized in that, The minimum distance between the second grounding terminal and the first radiator is less than the minimum distance between the second open terminal and the first radiator; The first radiator and the second radiator do not overlap along the first direction, and the first radiator and the second radiator at least partially overlap along the second direction.

9. The antenna structure according to any one of claims 1 to 8, characterized in that, The antenna further includes a first element and a second element; Wherein, the first grounding point is used to selectively couple with the first element via the first switch; The second grounding point is used to selectively couple with the second element via the second switch.

10. An antenna structure, characterized in that, include: A first radiator, wherein a first end of the first radiator is a first open end, and a second end of the first radiator is a first grounded end; The second radiator has a first end that is a second open end and a second end that is a second grounded end. Wherein, the first radiator includes a first feed point, the second radiator includes a second feed point, and the first feed point and the second feed point are used to couple with the feed circuit; The first ground terminal includes a first tuning point, which is used to couple with a first tuning circuit; The second ground terminal includes a second tuning point, which is used to couple with the second tuning circuit; The minimum distance between the first radiator and the second radiator is less than or equal to one-third of the size of the first radiator in the first direction and less than or equal to one-third of the size of the second radiator in the second direction, wherein the first direction is the direction from the first grounding end to the first open end, and the second direction is the direction from the second grounding end to the second open end; The minimum distance between the first tuning point and the first grounding terminal is greater than or equal to one-third of the size of the first radiator in the first direction; The minimum distance between the second tuning point and the second grounding terminal is greater than or equal to one-third of the size of the second radiator in the second direction.

11. The antenna structure according to claim 10, characterized in that, When the first tuning circuit is in the first circuit state and the second tuning circuit is in the second circuit state, the first radiator is used to generate the first resonance and the second radiator is used to generate the second resonance. The resonant frequency band of the first resonance and the resonant frequency band of the second resonance both include the first operating frequency band. When the first tuning circuit is in the third circuit state and the second tuning circuit is in the fourth circuit state, the first radiator is used to generate the third resonance and the second radiator is used to generate the fourth resonance. The resonant frequency band of the third resonance and the resonant frequency band of the fourth resonance both include the second operating frequency band. The first operating frequency band and the second operating frequency band are different.

12. The antenna structure according to claim 10 or 11, characterized in that, The power supply circuit further includes a phase shifting circuit, and the first power supply point is used to couple with the phase shifting circuit. When the phase-shifting circuit is in the first phase-shifting state, the phase difference between the phase of the electrical signal at the first feed point and the phase of the electrical signal at the second feed point is the first phase difference; When the phase shifting circuit is in the second phase shifting state, the phase difference between the phase of the electrical signal at the first feed point and the phase of the electrical signal at the second feed point is the second phase difference, and the first phase difference and the second phase difference are different.

13. The antenna structure according to claim 12, characterized in that, When the phase-shifting circuit is in the first phase-shifting state, the antenna is used to generate a first radiation pattern; When the phase-shifting circuit is in the second phase-shifting state, the antenna is used to generate a second radiation pattern, which is different from the first radiation pattern.

14. The antenna structure according to any one of claims 10 to 13, characterized in that, The first grounding terminal and the second grounding terminal are opposite to each other and do not touch each other.

15. The antenna structure according to any one of claims 10 to 13, characterized in that, The first open terminal and the second ground terminal are opposite to each other and do not touch.

16. The antenna structure according to any one of claims 10 to 13, characterized in that, The first grounding terminal and the second grounding terminal are located on the first side of the virtual connection, and the first open terminal and the second open terminal are located on the second side of the virtual connection. The virtual connection is the line connecting the center of the first radiator and the center of the second radiator.

17. The antenna structure according to any one of claims 10 to 13, characterized in that, The minimum distance between the second grounding terminal and the first radiator is less than the minimum distance between the second open terminal and the second radiator.

18. An electronic device, characterized in that, The antenna structure includes any one of claims 1 to 17.

19. The electronic device according to claim 18, characterized in that, The electronic device also includes a floor and a back cover; The first radiating element is attached to the rear cover, and the second radiating element is attached to the rear cover. At least a portion of the first radiator is spaced apart from the floor, and at least a portion of the second radiator is spaced apart from the floor.

20. The electronic device according to claim 19, characterized in that, The electronic device also includes a printed circuit board (PCB), with the first radiator and the second radiator located between the back cover and the PCB.

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