An electronic device

Abstract

Embodiments of the present application provide an electronic device comprising an antenna. The antenna uses part of the frame on two adjacent sides as a radiator, and through a single feed point, the antenna is left-handed circularly polarized and right-handed circularly polarized in a first frequency band and a second frequency band, respectively. Moreover, since the left-handed circular polarization and the right-handed circular polarization are generated based on the same feed point and the same slot on the radiator, the maximum radiation direction of the directional diagram generated by the first frequency band and the maximum radiation direction of the directional diagram generated by the second frequency band have less difference, the overlap of the directional diagram generated by the first frequency band and the directional diagram generated by the second frequency band is increased, and the demand for angle alignment of the antenna in the first frequency band and the second frequency band is met.

Description

Technical Field

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

[0002] In satellite navigation or communication systems, circularly polarized antennas offer several unique advantages over linearly polarized antennas. For instance, linearly polarized waves undergo polarization rotation (commonly known as Faraday rotation) as they pass through the ionosphere, while circularly polarized waves, due to their rotational symmetry, resist Faraday rotation. Therefore, circularly polarized antennas are generally used as transmitting or receiving antennas in satellite navigation or communication systems. Furthermore, in satellite navigation or communication systems, if a traditional linearly polarized antenna were used to receive circularly polarized waves transmitted from a satellite, half the energy would be lost due to polarization mismatch.

[0003] However, considering factors such as industrial design (ID) and the overall structure of electronic devices, current terminal electronic device designs all use linearly polarized antennas, without studying the circular polarization characteristics of the antennas. Furthermore, existing dedicated satellite terminals generally use external antennas to achieve circular polarization, with most antennas being bulky four-walled helical antennas, making internal antenna integration impossible. Therefore, designing internally mounted or conformally shaped circularly polarized antennas is of great significance for realizing satellite communication or navigation functions in terminal electronic devices. Summary of the Invention

[0004] This application provides an electronic device including an antenna. The antenna utilizes portions of the frame on two adjacent sides of its border as radiators. Through a single feed point, the antenna exhibits left-hand circular polarization in the first frequency band and right-hand circular polarization in the second frequency band. Furthermore, since the left-hand and right-hand circular polarizations are generated based on the same feed point and the same slot on the radiator, the difference between the maximum radiation direction of the radiation pattern generated in the first frequency band and the maximum radiation direction of the radiation pattern generated in the second frequency band is small. This increases the overlap between the radiation patterns generated in the first and second frequency bands, satisfying the requirement for angular alignment of the antenna in the first and second frequency bands.

[0005] In a first aspect, an electronic device is provided, comprising: a first conductive frame, the first conductive frame including a first side and a second side intersecting at an angle, the first side including a first position and a second position, the second side including a third position, the second position being located between the first position and the third position, the second position having a first gap, the frame between the first position and the second position being a first frame, and the frame between the second position and the third position being a second frame; an antenna, the antenna including a radiator, the radiator including the first frame and the second frame, the first frame being grounded at the first position, the second frame being grounded at the third position, the first frame including a first feed point, the antenna operating frequency band including a first frequency band and a second frequency band, the frequency of the first frequency band being lower than the frequency of the second frequency band; a first feed unit, the first feed unit including a first radio frequency channel and a second radio frequency channel, the first radio frequency channel being coupled to the first frame at the first feed point, the second radio frequency channel being coupled to the first frame at the first feed point, the operating frequency band of the first radio frequency channel including the first frequency band, and the operating frequency band of the second radio frequency channel including the second frequency band.

[0006] According to the technical solution of the embodiments of this application, when a radio frequency signal is fed into the first feed point, the radiator can simultaneously excite the longitudinal mode and the transverse mode in the above embodiments in the first frequency band and the second frequency band, so that the polarization mode of the first antenna is circularly polarized.

[0007] Furthermore, since the open end (ungrounded end) of the first frame is located on the first side (e.g., the left side) of the first slot, and the open end of the second frame is located on the second side (e.g., the right side) of the first slot, the circular polarization direction of the first frequency band primarily excited by the first frame is opposite to the circular polarization direction of the second frequency band primarily excited by the second frame, allowing the first antenna to be applied to a satellite communication system (in a satellite communication system, the circular polarization directions of the transmitting and receiving frequency bands are opposite).

[0008] Meanwhile, since the resonance generated in the first frequency band and the resonance generated in the second frequency band are both fed by the same feed point, and the resonance generated in the first frequency band and the resonance generated in the second frequency band share the first gap opened at the second position, the maximum radiation direction of the radiation pattern generated in the first frequency band is less different from that of the radiation pattern generated in the second frequency band. This increases the overlap between the radiation patterns generated in the first frequency band and the radiation patterns generated in the second frequency band, satisfying the requirement for the first antenna to be angularly aligned in the first and second frequency bands. In the overlapping part of the radiation patterns generated in the first frequency band and the radiation patterns generated in the second frequency band, the electronic equipment can have good satellite communication performance.

[0009] In conjunction with the first aspect, in some implementations of the first aspect, the electronic device further includes a first switch, the common port of the first switch being coupled to the first frame at the first feed point, a first port of the first switch being electrically connected to the first radio frequency channel, and a second port of the first switch being electrically connected to the second radio frequency channel.

[0010] According to the technical solution of the embodiments of this application, the first switch can be used to switch the electrical connection state between the first radio frequency channel and the second radio frequency channel and the first feed point, so that the first radio frequency channel and the second radio frequency channel feed radio frequency signals at the first feed point in different time slots, thereby realizing time division dual (TDD) of the feed circuit.

[0011] In conjunction with the first aspect, in some implementations of the first aspect, the first side may include a fourth position, the first position being located between the second position and the fourth position, the fourth position having a second gap, and the border between the first position and the fourth position being a third border; the border also includes a third side intersecting the first side at an angle, the third side or the first side including a fifth position, and the border between the fourth position and the fifth position being a fourth border; the radiator includes the third border and the fourth border.

[0012] In conjunction with the first aspect, in some implementations of the first aspect, the first gap and the second gap are symmetrical along the virtual axis of the first side.

[0013] According to the technical solution of the embodiments of this application, as the symmetry of the first antenna structure increases, the radiation performance of the first antenna will also increase.

[0014] In conjunction with the first aspect, in some implementations of the first aspect, the fourth border includes a connection point, and the fourth border is grounded at the fifth position and the connection point.

[0015] According to the technical solution of the embodiments of this application, the connection point can be adjusted by adjusting the current distribution on the ground when the first antenna is working in the first frequency band, so that the maximum radiation direction of the radiation pattern generated by the first frequency band is closer to the maximum radiation direction of the radiation pattern generated by the second frequency band, reducing the difference between the maximum radiation direction of the radiation pattern generated by the first frequency band and the maximum radiation direction of the radiation pattern generated by the second frequency band, increasing the overlap between the radiation pattern generated by the first frequency band and the radiation pattern generated by the second frequency band, and improving the accuracy of the first antenna when transmitting Beidou communication short messages.

[0016] In conjunction with the first aspect, in some implementations of the first aspect, the distance between the connection point and the fourth position is less than the distance between the connection point and the fifth position.

[0017] According to the technical solution of the embodiments of this application, the distance between the connection point and the fourth position is less than the distance between the connection point and the fifth position, so that the maximum radiation direction of the radiation pattern generated by the first frequency band is closer to the maximum radiation direction of the radiation pattern generated by the second frequency band.

[0018] In conjunction with the first aspect, in some implementations of the first aspect, the first power supply unit further includes a third radio frequency channel, the first radio frequency channel being electrically connected to a third port of the first switch; the electronic device further includes a second power supply unit, a third power supply unit, and a fourth power supply unit; the second frame includes a second power supply point, the second power supply unit being coupled to the second frame at the second power supply point; the third frame includes a third power supply point, the third power supply unit being coupled to the third frame at the third power supply point; and the fourth power supply unit being coupled to the fourth frame at the connection point.

[0019] According to the technical solution of the embodiments of this application, the first frame and the third radio frequency channel in the first feeding unit can form a second antenna (when the first antenna is not working, the common port of the first switch is connected to the third port, and the radio frequency signal is fed in by the third radio frequency channel). In one embodiment, the operating frequency band of the second antenna may include at least a portion of the low frequency band of the cellular network.

[0020] The second frame and the second feed unit can form a third antenna. In one embodiment, the operating frequency band of the third antenna may include at least a portion of the mid-to-high frequency band of the cellular network.

[0021] The third frame and the third feed unit can form a fourth antenna. In one embodiment, the operating frequency band of the fourth antenna may include at least a portion of the 5G frequency band of WiFi and the sub-6G frequency band (e.g., N77, N78, or N79 bands).

[0022] The fourth frame and the fourth feed unit can form a fifth antenna. In one embodiment, the operating frequency band of the fifth antenna may include at least the L5 band of GPS and the 2.4 GHz band of WiFi.

[0023] Because the space layout inside electronic devices is relatively compact, the first antenna 210 can reuse the radiator with antennas of other frequency bands, so as to realize the antenna layout of more communication frequency bands in the same space.

[0024] In conjunction with the first aspect, in some implementations of the first aspect, the electronic device further includes a second switch, the common port of the second switch being coupled to the second frame at the second power supply point, the first port of the second switch being grounded, and the second port of the second switch being electrically connected to the second power supply unit.

[0025] In conjunction with the first aspect, in some implementations of the first aspect, the electronic device further includes a third switch, the common port of the third switch being coupled to the fourth frame at the connection point, and the first port of the third switch being grounded.

[0026] According to the technical solution of the embodiments of this application, since the first antenna and the second, third, fourth and fifth antennas share the same radiator, when the first antenna is working, the second, third, fourth and fifth antennas are not working.

[0027] Correspondingly, the common port of the first switch is connected to the first port (first RF channel) and the second port (second RF channel) in different time slots, so that the first feed point is fed with RF signals of the first frequency band and the second frequency band.

[0028] The common port of the second switch is connected to the first port, grounding the second frame at the second feed point. Since the RF signal fed into the first feed point has high power in the satellite communication frequency band, the second switch can be used to prevent the RF signal coupled to the second frame from flowing into the second feed unit and damaging the electronic components between the second feed point and the second feed unit.

[0029] The common port of the third switch is connected to the first port, causing the fourth frame to be grounded at the connection point. Grounding the fourth frame at the connection point can be used to bring the maximum radiation direction of the radiation pattern generated by the first frequency band closer to the maximum radiation direction of the radiation pattern generated by the second frequency band.

[0030] In conjunction with the first aspect, in some implementations of the first aspect, the electronic device further includes a first matching network, the first matching network including a fourth switch and a plurality of first electronic components, the first electronic components being electrically connected between the first feed point and the fourth switch, the common port of the fourth switch being grounded.

[0031] In conjunction with the first aspect, in some implementations of the first aspect, the electronic device further includes a second matching network, the second matching network including a fifth switch and a plurality of second electronic components, the second electronic components being electrically connected between a first port of the second switch and the fifth switch, the common port of the fifth switch being grounded.

[0032] In conjunction with the first aspect, in some implementations of the first aspect, the electronic device further includes a third matching network, the third matching network including a sixth switch and a plurality of third electronic components, the third electronic components being electrically connected between a second port of the second switch and the sixth switch, the common port of the sixth switch being grounded.

[0033] In conjunction with the first aspect, in some implementations of the first aspect, the electronic device includes a pivot, a first housing, and a second housing; wherein the pivot is located between the first housing and the second housing, and the pivot is rotatably connected to both the first housing and the second housing, the first housing includes a first conductive frame, and the second housing includes a second conductive frame.

[0034] According to the technical solution of this application embodiment, the electronic device is a foldable electronic device. In the folded state, the parasitic branches provided on the second conductive frame can be used to improve the efficiency of the antenna provided on the first conductive frame. At the same time, by utilizing the parasitic branches, the maximum radiation direction of the radiation pattern generated by the first frequency band or the maximum radiation direction of the radiation pattern generated by the second frequency band can be pulled, so that the radiation patterns generated by the first frequency band and the radiation patterns generated by the second frequency band overlap, thereby improving the satellite communication performance of the electronic device.

[0035] In conjunction with the first aspect, in some implementations of the first aspect, the distance between the first feed point and the second position is less than one-third of the distance between the first position and the second position.

[0036] In conjunction with the first aspect, in some implementations of the first aspect, the circular polarization axial ratio of the antenna in the first frequency band is less than or equal to 10 dB, and / or the circular polarization axial ratio of the antenna in the second frequency band is less than or equal to 10 dB.

[0037] According to the technical solution of the embodiments of this application, when the circular polarization axial ratio of the antenna is less than or equal to 10dB, the antenna can be considered to have good circular polarization characteristics.

[0038] In conjunction with the first aspect, in some implementations of the first aspect, the distance L3 between the first position and the third position and the length L4 of the first side satisfy: 7×L4 / 16≤L3≤9×L4 / 16.

[0039] In conjunction with the first aspect, in some implementations of the first aspect, the first frequency band includes 1610MHz to 1626.5MHz, and / or the second frequency band includes 2483.5MHz to 2500MHz.

[0040] In conjunction with the first aspect, in some implementations of the first aspect, the antenna is polarized in the first frequency band as left-hand circular polarization, and / or the antenna is polarized in the second frequency band as right-hand circular polarization.

[0041] According to the technical solution of this application embodiment, the first frequency band may include the transmission frequency band (1610MHz to 1626.5MHz) of the BeiDou satellite system communication technology. In one embodiment, the second frequency band may include the reception frequency band (2483.5MHz to 2500MHz) of the BeiDou satellite system communication technology. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the electronic device provided in the embodiments of this application.

[0043] Figure 2 This is a schematic diagram illustrating a usage scenario of a circularly polarized antenna provided in an embodiment of this application.

[0044] Figure 3 This is a schematic diagram of a circularly polarized antenna provided in an embodiment of this application.

[0045] Figure 4 This is a schematic diagram of the structure of the electronic device 100 provided in the embodiments of this application.

[0046] Figure 5 This is a schematic diagram of the energy flow distribution in the lateral and longitudinal modes provided in the embodiments of this application.

[0047] Figure 6 This is a schematic diagram of the structure of an electronic device 200 provided in an embodiment of this application.

[0048] Figure 7 This is a schematic diagram of the structure of an electronic device 200 provided in an embodiment of this application.

[0049] Figure 8 This is a schematic diagram of the structure of an electronic device 200 provided in an embodiment of this application.

[0050] Figure 9 This is a schematic diagram of the structure of the first matching network 271 provided in the embodiments of this application.

[0051] Figure 10 This is a schematic diagram of the structure of the second matching network 272 and the third matching network 273 provided in the embodiments of this application.

[0052] Figure 11 yes Figure 8 The simulation results of the S-parameters of the first antenna 210 are shown in the figure.

[0053] Figure 12 yes Figure 8 The diagram shows the current distribution of the first antenna 210 in the first frequency band (1.62 GHz).

[0054] Figure 13 yes Figure 8The diagram shows the current distribution of the first antenna 210 in the second frequency band (2.5 GHz).

[0055] Figure 14 yes Figure 8 The first antenna 210 shown has an axial ratio pattern in the first frequency band (1.62 GHz).

[0056] Figure 15 yes Figure 8 The first antenna 210 shown has an axial ratio pattern in the second frequency band (2.5 GHz).

[0057] Figure 16 yes Figure 8 The simulation results of the gain of the first antenna 210 in the first frequency band (1.62GHz) and the second frequency band (2.5GHz) are shown.

[0058] Figure 17 This is a schematic diagram of a graphical user interface provided in an embodiment of this application.

[0059] Figure 18 This is a schematic diagram of another electronic device 200 provided in the embodiments of this application.

[0060] Figure 19 This is a schematic diagram of the electronic device 200 provided in the embodiments of this application in a folded state.

[0061] Figure 20 yes Figure 18 The simulation results show the gain of the first antenna in the first frequency band (1.62 GHz) and the second frequency band (2.5 GHz) when the electronic device is in the deployed state.

[0062] Figure 21 yes Figure 18 The simulation results show the gain of the first antenna in the first frequency band (1.62 GHz) and the second frequency band (2.5 GHz) when the electronic device is in the folded state. Detailed Implementation

[0063] The following explains the terminology that may appear in the embodiments of this application.

[0064] 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.

[0065] Connection / linking: can refer to a mechanical or physical connection. For example, A and B being connected or linked can mean that there are fasteners (such as screws, bolts, rivets, etc.) between A and B, or that A and B are in contact with each other and are difficult to separate.

[0066] Connection: The process of making two or more components conduct or connect through the above-mentioned "electrical connection" or "indirect coupling" to transmit signals / energy can be called connection.

[0067] Relative / Relative Settings: A relative setting to B can refer to A and B being face-to-face (opposite to, or face to face) settings.

[0068] Lumped element / device: 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 the components remain constant at all times, regardless of frequency.

[0069] Distributed elements / devices: Unlike lumped elements, if the size of an element is similar to or larger than the wavelength of the circuit's operating frequency, then when a signal passes through the element, the characteristics of each point on the element will vary due to the signal change. In this case, the element as a whole cannot be regarded as a single entity with fixed characteristics, but should be called a distributed element.

[0070] Capacitor: can be understood as lumped capacitance and / or distributed capacitance. Lumped capacitance refers to capacitive components, such as capacitor elements; distributed capacitance (or distributed capacitance) refers to the equivalent capacitance formed by two conductive components separated by a certain gap.

[0071] Inductance: can be understood as lumped inductance and / or distributed inductance. Lumped inductance refers to inductive components, such as inductor elements; distributed inductance (or distributed inductance) refers to the equivalent inductance formed through a conductive element of a certain length.

[0072] 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.

[0073] 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, inverted F antennas (also known as IFA, Inverted F Antenna), and planar inverted F antennas (also known as PIFA, Planar 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. 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.

[0074] 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, 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 gap may be fed by a transmission line bridging one or both sides, thereby exciting a radio frequency electromagnetic field on the gap and radiating electromagnetic waves into space. In one embodiment, the radiator of a 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, which is spaced apart from the ground and grounded at both ends, thereby forming a closed or semi-closed slot or gap. In another embodiment, the radiator of a slot antenna or gap antenna can be implemented by a support conductor grounded at both ends, also known as a support antenna.

[0075] Resonant / Resonant Frequency: The resonant frequency is also called the resonance frequency. It refers to the frequency at which the imaginary part of the antenna's input impedance is zero. The resonant frequency can have a range, that is, the range of frequencies where resonance occurs. The frequency corresponding to the point of strongest resonance is the center frequency. The return loss characteristic at the center frequency can be less than -20dB.

[0076] 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.

[0077] 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.

[0078] The resonant frequency band and the operating frequency band can be the same or different, or their frequency ranges can partially overlap. In one embodiment, the resonant frequency band of the antenna can cover multiple operating frequency bands of the antenna.

[0079] 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:

[0080]

[0081] Where L is the physical length and λ is the wavelength of the electromagnetic wave.

[0082] 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.

[0083] 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. 8 m / 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 the embodiments of this application 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 of 1920MHz to 1980MHz) is 1955MHz, then 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 the embodiments of this application can be simply calculated using the relative permittivity of the medium filling one or more sides of the radiator.

[0084] The definitions of position and distance mentioned in the embodiments of this application, such as "middle" or "middle position," are all relative to the current technological level, and not absolutely strict definitions in a mathematical sense. For example, the middle (position) of a conductor can be a section of the conductor including its midpoint, or a section of the conductor including its midpoint that is one-eighth of a wavelength. The wavelength can be the wavelength corresponding to the operating frequency band of the antenna, the wavelength corresponding to the center frequency of the operating frequency band, or the wavelength corresponding to the resonant point. As another example, the middle (position) of a conductor can be a section of the conductor that is less than a predetermined threshold (e.g., 1 mm, 2 mm, or 2.5 mm) from the midpoint.

[0085] The symmetry (e.g., axial symmetry, or central symmetry) and similarity (e.g., same length, same width, etc.) mentioned in the embodiments of this application are all relative to the current technological level, and not absolutely strict definitions in a mathematical sense. There may be a predetermined threshold or a predetermined angle deviation between the two. In one embodiment, the predetermined threshold may be less than or equal to 1 mm, for example, the predetermined threshold may be 0.5 mm or 0.1 mm. In one embodiment, the predetermined angle may be an angle within the range of ±10°, for example, the predetermined angle deviation is ±5°.

[0086] Antenna polarization: At a given point in space, the electric field intensity E (vector) is a function of time t. As time progresses, the endpoint of the vector periodically traces a trajectory in space. If this trajectory is a straight line and 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 elliptical or circular, and when viewed along the propagation direction, 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).

[0087] Antenna radiation pattern: also known as radiation pattern. It refers to the graph showing how the relative field strength (normalized modulus) of the antenna's radiated field changes with direction at a certain distance from the antenna. It is usually represented by two mutually perpendicular planar radiation patterns passing through the direction of maximum radiation of the antenna.

[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] Axial ratio (AR) of an antenna: In circular polarization, the trajectory traced periodically by the endpoints of the electric field vector in space is an ellipse. The ratio of the major axis to the minor axis of the ellipse is called the axial ratio. The axial ratio is an important performance indicator of a circularly polarized antenna. It represents the purity of circular polarization and is an important indicator for measuring the difference in signal gain of the entire antenna in different directions. The closer the axial ratio of the antenna is to 1 (the trajectory traced periodically by the endpoints of the electric field vector in space is a circle), the better its circular polarization performance.

[0091] 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.

[0092] 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.

[0093] Clearance: refers to the distance between the radiator of an antenna and the metal or electronic components near the radiator. For example, when part of the metal frame of an electronic device acts as the radiator of an antenna, the clearance can refer to the distance between the radiator and the printed circuit board or electronic components (such as a camera).

[0094] Poynting vector This refers to the energy flux density vector in an electromagnetic field. The electric field vector at a certain point in space is... The magnetic field vector is The energy flux density of the electromagnetic field at this location is Direction from and Determined by the right-hand screw rule, the unit is W / (m) 2 ).

[0095] Ground, or floor: can refer 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 any 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.

[0096] 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.

[0097] The technical solutions of the embodiments of this application will now be described with reference to the accompanying drawings.

[0098] like Figure 1 As shown, the electronic device 10 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.

[0099] 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.

[0100] 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.

[0101] The middle frame 19 mainly serves to support the entire machine. Figure 1 The 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 10 may also have other ground planes / grounding layers, as previously described, and will not be repeated here.

[0102] The electronic device 10 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.

[0103] The electronic device 10 may also include a bezel 11, which may be formed of a conductive material such as metal. The bezel 11 may be disposed between the display module 15 and the back cover 21 and extend circumferentially around the periphery of the electronic device 10. The bezel 11 may have four sides surrounding the display module 15 to help secure the display module 15. In one implementation, the bezel 11 made of metal can be directly used as the metal bezel of the electronic device 10, forming a metal bezel appearance suitable for industrial design (ID). In another implementation, the outer surface of the bezel 11 may also be made of a non-metallic material, such as a plastic bezel, forming a non-metallic bezel appearance suitable for non-metallic ID.

[0104] 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 10. 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.

[0105] The border 11 on the middle frame 19 can at least partially serve as an antenna radiator to receive / transmit radio frequency signals. This portion of the border serving as the radiator can 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 can have an aperture at this portion of the border serving as the radiator to facilitate antenna radiation.

[0106] 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 42 may exist between this portion of the frame acting as the radiator and the middle frame 30, thereby ensuring that the antenna radiator has a good radiation environment, enabling the antenna to have good signal transmission capabilities.

[0107] The back cover 21 can be made of metal; it can also be made of non-conductive material, such as glass or plastic; or it can be made of both conductive and non-conductive materials.

[0108] The antenna of the electronic device 10 can also be disposed within the frame 11. When the frame 11 of the electronic device 10 is made of a non-conductive material, the antenna radiator can be located within the electronic device 10 and positioned along the frame 11. For example, the antenna radiator can be positioned close to the frame 11 to minimize the volume occupied by the antenna radiator and to be closer to the outside of the electronic device 10, thereby achieving better signal transmission performance. It should be noted that "positioning the antenna radiator close to the frame 11" means that the antenna radiator can be positioned flush against the frame 11 or close to the frame 11, for example, there can be a small gap between the antenna radiator and the frame 11.

[0109] The antenna of electronic device 10 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 setting of the antenna can ensure the radiation performance 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 10, 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), an antenna based on laser-direct-structuring (LDS), or a microstrip disk antenna (MDA), etc. In one embodiment, the antenna can also be a transparent structure embedded inside the screen of the electronic device 10, making the antenna a transparent antenna unit embedded inside the screen of the electronic device 10.

[0110] Figure 1 The electronic device 10 is shown only schematically, and the actual shape, size, and construction of these components are not subject to change. Figure 1 limited.

[0111] 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.

[0112] It should be understood that, in the embodiments of this application, when a user holds (typically vertically and facing the screen) an electronic device, the orientation of the electronic device includes a top, bottom, left side, and right side.

[0113] Figure 2 This is a schematic diagram illustrating a usage scenario of a circularly polarized antenna provided in an embodiment of this application.

[0114] like Figure 2 As shown, in satellite navigation or communication systems, circularly polarized antennas have some unique advantages over linearly polarized antennas. For example, linearly polarized waves undergo polarization rotation (commonly known as "Faraday rotation") when passing through the ionosphere, while circularly polarized waves, due to their rotational symmetry, can resist Faraday rotation. Therefore, circularly polarized antennas are generally used as transmitting or receiving antennas in satellite navigation or communication. Furthermore, in satellite navigation or communication systems, if a traditional linearly polarized antenna is used to receive circularly polarized waves transmitted from a satellite, half the energy will be lost due to polarization mismatch. Also, circularly polarized antennas are insensitive to the orientation of the transmitting and receiving antennas.

[0115] For example, a satellite navigation or communication system could be the BeiDou satellite system, whose operating frequency bands could include the L band (1610MHz to 1626.5MHz), S band (2483.5MHz to 2500MHz), B1 band (1559Hz to 1591MHz), B2 band (1166MHz to 1217MHz), and B3 band (1250MHz to 1286MHz).

[0116] Figure 3 This is a schematic diagram of a circularly polarized antenna provided in an embodiment of this application.

[0117] Satellite phones typically employ an external circularly polarized antenna, with a specific antenna structure as follows: Figure 7 As shown, the external circularly polarized antenna consists of four radiating arms printed on the outer wall of a dielectric cylinder. The four radiating arms use a circularly polarized feed network, and are fed sequentially with phase differences of [0°, 90°, 180°, 270°] to achieve a wide-beam circularly polarized radiation pattern.

[0118] However, for electronic devices (e.g., Figure 1 For the mobile phone shown, Figure 7 The external circularly polarized antenna shown is too large to be integrated into the electronic device. Furthermore, since electronic devices require the placement of various electronic components, the clearance of the antenna is generally very small (e.g., less than or equal to 2mm, or less than or equal to 1.5mm), making it difficult to reserve a large amount of space for circular polarization.

[0119] Meanwhile, in the frequency bands of the BeiDou satellite system communication technology, due to the significant frequency difference between its transmission frequency band (1610MHz to 1626.5MHz) and receiving frequency band (2483.5MHz to 2500MHz), the current distribution during resonance differs, resulting in a substantial difference between the maximum radiation direction of the radiation pattern generated by the transmission frequency band and that generated by the receiving frequency band. This difference can be greater than 45°. Because the transmission and receiving frequency bands cannot meet the angular alignment requirements, the transmission frequency band may align with the satellite (maximum radiation direction pointing towards the satellite), while the receiving frequency band may not, leading to a significant decrease in the accuracy of transmitting BeiDou short messages.

[0120] The "maximum radiation direction of the radiation pattern" can be understood as the direction in which the maximum gain in the radiation pattern points.

[0121] This application provides an electronic device including an antenna. The antenna utilizes portions of the frame on two adjacent sides of its border as radiators. Through a single feed point, the antenna exhibits left-hand circular polarization in the first frequency band and right-hand circular polarization in the second frequency band. Furthermore, since the left-hand and right-hand circular polarizations are generated based on the same feed point and the same slot on the radiator, the difference between the maximum radiation direction of the radiation pattern generated in the first frequency band and the maximum radiation direction of the radiation pattern generated in the second frequency band is small. This increases the overlap between the radiation patterns generated in the first and second frequency bands, satisfying the requirement for angular alignment of the antenna in the first and second frequency bands.

[0122] Figure 4 and Figure 5 The two antenna modes involved in this application are introduced.

[0123] like Figure 4 As shown, the electronic device 100 may include a conductive frame 11.

[0124] The border 11 includes a first border 105 and a second border 106. Border 11 may include a first side 131 and a second side 132 that intersect at an angle, with the length of the first side 131 being greater than the length of the second side 132. The first border 105 may be located on the first side 131 of border 11, and the second border 106 may be located on the second side 132 of border 11. The first side 131 may have a first position 101 and a second position 102, and the second side 132 may have a third position 103 and a fourth position 104. The border between the first position 101 and the second position 102 is the first border 105, and the border between the third position 103 and the fourth position 104 is the second border 106.

[0125] The first frame 105 and the second frame 106 can serve as radiators for the antenna 110 in the electronic device 100.

[0126] It should be understood that in the embodiments of this application, the frame (e.g., the first frame 105 and the second frame 106) can be a conductive frame, or a non-conductive frame with conductive patches (deposited on the inner surface or embedded therein), and the conductive portions of the first frame 105 and the second frame 106 serve as radiators of the antenna 110.

[0127] When an electrical signal is fed into the first frame, the resulting energy flow (Poynting vector) has a component along the y-axis (the current direction is perpendicular to the energy flow direction, which is the x-direction). This energy flow distribution can be interpreted as the longitudinal mode generated by the antenna, such as... Figure 5 As shown in (a) above. When an electrical signal is fed into the second frame, the resulting energy flow has a component along the x-axis (the current direction is perpendicular to the energy flow direction, which is the y-direction). This energy flow distribution can be interpreted as the lateral mode generated by the antenna, as shown below. Figure 5 As shown in (b) above. When the first or second frame is located in the vicinity of the intersection of the first and second sides (e.g., the overlapping area of ​​the first and second sides), the resulting energy flow (Poynting vector) has components along both the x-axis and y-axis directions. The antenna can simultaneously generate lateral and longitudinal modes. For example, when the first frame is located in the intersecting area (the portion of the first frame on the first side is larger than the portion on the second side), the resulting energy flow (Poynting vector) is as follows: Figure 5 As described in (c), when the first border is located in the vicinity of the junction (the portion of the first border on the second side is greater than the portion on the first side), the resulting energy flow (Poynting vector) is as follows: Figure 5 As shown in (d) in the figure.

[0128] It should be understood that, for the sake of brevity, this application only uses the example of a right angle at the intersection of the first and second sides. The area near the intersection of the first and second sides can be understood as the area within a first threshold (e.g., 5mm or 10mm) of the intersection. Furthermore, in practical applications, the intersection of the first and second sides can be arc-shaped. Therefore, the area near the intersection of the first and second sides can be understood as the area within a first threshold (e.g., 5mm or 10mm) of the midpoint of the arc-shaped intersection. This application does not impose any limitations on this.

[0129] Figure 6 This is a schematic diagram of the structure of an electronic device 200 provided in an embodiment of this application.

[0130] like Figure 6 As shown, the electronic device 200 may include a conductive frame 11, a first antenna 210, and a feeding unit 220.

[0131] The border 11 may include a first side 231 and a second side 232 that intersect at an angle. The first side 231 includes a first position 201 and a second position 202. The second side 232 includes a third position 203. The second position 202 is located between the first position 201 and the third position 203, and a first gap 241 is formed in the second position 202. The border 11 between the first position 201 and the second position 202 is the first border 2111. The border 11 between the second position 202 and the third position 203 is the second border 2112.

[0132] The first antenna 210 includes a radiator 211. The radiator 211 includes a first frame 2111 and a second frame 2112. The first frame 2111 is grounded by coupling to a ground plane 230 at a first location 201. The second frame 2112 is grounded by coupling to the ground plane 230 at a third location 203. The first frame 2111 includes a first feed point 251. The operating frequency band of the first antenna 210 includes a first frequency band and a second frequency band, where the frequency of the first frequency band is lower than the frequency of the second frequency band.

[0133] It should be understood that, for the sake of brevity, this application embodiment only uses the example of grounding achieved by electrically connecting the frame or radiator to the floor 230. In actual production or design, the frame or radiator can also be grounded through indirect coupling.

[0134] The power supply unit 220 may include a first radio frequency (RF) channel 221 and a second RF channel 222. The first RF channel 221 is coupled to the first frame 2111 at the first power supply point 251, and the second RF channel 222 is coupled to the first frame 2111 at the first power supply point 251. The operating frequency band of the first RF channel 221 includes a first frequency band, and the operating frequency band of the second RF channel 222 includes a second frequency band. The first RF channel 221's operating frequency band including the first frequency band can be understood as the first RF channel 221 being used to transmit RF signals (electrical signals) with frequencies within the first frequency band, and the operating frequency band of the second RF channel 222 can be understood accordingly.

[0135] It should be understood that, for the sake of brevity, this embodiment of the application only uses the example of the power supply unit 220 being electrically connected to the frame or radiator to achieve the power supply connection. In actual production or design, the power supply connection of the frame or radiator can also be achieved through indirect coupling.

[0136] The technical solution provided in this application embodiment allows the radiator 211 to simultaneously excite the longitudinal and lateral modes described in the above embodiment in both the first and second frequency bands when a radio frequency signal is fed into the first feed point 251, so that the polarization of the first antenna is circularly polarized. In one embodiment, the resonance of the first antenna 210 in the first frequency band is mainly excited by the first frame 2111, and the resonance in the second frequency band is mainly excited by the second frame 2112. Since the open end (ungrounded end) of the first frame 2111 is located on the first side (e.g., the left side) of the first slot 241, and the open end of the second frame 2112 is located on the second side (e.g., the right side) of the first slot 241, the circular polarization direction of the first frequency band excited by the first frame 2111 is opposite to the circular polarization direction of the second frequency band excited by the second frame 2112, enabling the first antenna to be applied to satellite communication systems (in satellite communication systems, the circular polarization directions of the transmitting and receiving frequency bands are opposite).

[0137] Meanwhile, since the resonance generated in the first frequency band and the resonance generated in the second frequency band are both fed by the same feed point, and the resonance generated in the first frequency band and the resonance generated in the second frequency band share the first slot 241 opened at the second position 202, the maximum radiation direction of the radiation pattern generated in the first frequency band is less different from that of the radiation pattern generated in the second frequency band. This increases the overlap between the radiation patterns generated in the first frequency band and the radiation patterns generated in the second frequency band, satisfying the requirement of angular alignment of the first antenna 210 in the first and second frequency bands. In the overlapping part of the radiation patterns generated in the first frequency band and the radiation patterns generated in the second frequency band, the electronic equipment can have good satellite communication performance.

[0138] In one embodiment, the length of the first border 2111 is greater than the length of the second border 2112.

[0139] It should be understood that since the resonance of the first antenna 210 in the first frequency band is mainly excited by the first frame 2111, and the resonance in the second frequency band is mainly excited by the second frame 2112, and the frequency of the first frequency band is lower than the frequency of the second frequency band, correspondingly, the length of the first frame 2111 is greater than the length of the second frame 2112. In one embodiment, the physical size of the frame can be shortened without changing the electrical length by placing electronic components between the first frame 2111 and the ground plane 230 or between the second frame 2112 and the ground plane 230. Therefore, the length of the first frame 2111 can also be less than the length of the second frame 2112. However, when the physical size of the frame is shortened by loading electronic components, the radiation aperture of the first antenna will be reduced, thus reducing the radiation performance of the first antenna.

[0140] In one embodiment, the angular difference between the maximum radiation direction of the pattern generated by the first frequency band and the maximum radiation direction of the pattern generated by the second frequency band is less than or equal to 30°. When the angular difference between the maximum radiation direction of the pattern generated by the first frequency band and the maximum radiation direction of the pattern generated by the second frequency band is less than or equal to 30°, it can be considered that the first antenna 210 is angularly aligned in the first and second frequency bands.

[0141] In one embodiment, the circular polarization axial ratio of the first antenna 210 in a first frequency band is less than or equal to 10 dB. In another embodiment, the circular polarization axial ratio of the first antenna 210 in a second frequency band is less than or equal to 10 dB. It should be understood that when the circular polarization axial ratio of the first antenna 210 is less than or equal to 10 dB, the first antenna 210 can be considered to have good circular polarization characteristics.

[0142] In one embodiment, the first antenna 210 is polarized in a left-hand circular polarization in a first frequency band. In another embodiment, the first antenna 210 is polarized in a right-hand circular polarization in a second frequency band.

[0143] In one embodiment, the first frequency band may include the transmission frequency band (1610MHz to 1626.5MHz) of the BeiDou satellite system communication technology. In another embodiment, the second frequency band may include the reception frequency band (2483.5MHz to 2500MHz) of the BeiDou satellite system communication technology.

[0144] In one embodiment, the first radio frequency channel 221 and the second radio frequency channel 222 can be two different radio frequency channels in a radio frequency IC (e.g., two different pins of the radio frequency IC).

[0145] In one embodiment, the ratio of the length L1 to the width L2 of the floor 230 can be greater than or equal to 1.5. In another embodiment, the ratio of the length L1 to the width L2 of the floor 230 is less than or equal to 3. It should be understood that when the length L1 and width L2 of the floor 230 are within a suitable ratio, better lateral and longitudinal patterns can be generated.

[0146] In one embodiment, the length L1 and width L2 of the floor 230 can be determined by the contour formed by the superimposed metal portions within the electronic device 200 that can serve as the floor. For example, when the electronic device is... Figure 1In the case of the mobile phone shown, the length L1 and width L2 of the floor 230 can be determined by the length and width of the rectangular outline formed by the edges of the mid-frame, PCB, and other metal parts that can be considered as a whole. In one embodiment, due to the compactness of the electronic device, a floor is typically provided in the internal space 0-2mm from the inner surface of the frame (e.g., the mid-frame, PCB, battery, etc. can all be considered as part of the floor), and the filling medium between the frame and the floor can be considered as the length and width of the rectangle formed by the inner surface outline of the filling medium.

[0147] In one embodiment, the distance L3 between the first position 201 and the third position 203 satisfies the following condition with respect to the length L4 of the first side 2111: 7 × L4 / 16 ≤ L3 ≤ 9 × L4 / 16. In one embodiment, the length of the first side 2111 can be understood as its length extending in the y-direction, or the width of the electronic device. When the electronic device is foldable, it can be understood as the length and width of the electronic device in its folded state.

[0148] It should be understood that the distance between the first position 201 and the third position 203 can be understood as the distance from the first position 201 along the first side 231 and the second side 232 to the third position 203. In the embodiments of this application, the distance between the two positions on the border can be referred to the above description, and will not be repeated here.

[0149] In one embodiment, the distance between the first feed point 251 and the second position 202 is less than one-third of the distance between the first position 201 and the second position 202, so that the first antenna 210 can excite resonance in the first frequency band and resonance in the second frequency band.

[0150] It should be understood that the distance between the second position 202 and the center of the gap 241 opened at the second position 202 can be understood as the distance between the second position 202 and the center of the gap 241.

[0151] In one embodiment, the length of the first side 231 is less than the length of the second side 232. When a user holds (typically vertically and facing the screen) the electronic device, the first antenna 210 can be positioned at the top of the electronic device to prevent excessive absorption of radiation from the first antenna 210 when the user holds the electronic device, thus avoiding a deterioration in the radiation performance of the first antenna 210.

[0152] In one embodiment, the electronic device 200 may further include a first switch 261, the common port of the first switch 261 being coupled to the first frame 2111 at the first feed point 251, the first port of the first switch 261 being electrically connected to the first radio frequency channel 221, and the second port of the first switch 261 being electrically connected to the second radio frequency channel 222.

[0153] It should be understood that the first switch 261 can be used to switch the electrical connection state between the first RF channel 221 and the second RF channel 222 and the first feed point 251, so that the first RF channel 221 and the second RF channel 222 feed RF signals at the first feed point 251 in different time slots, thereby realizing time division dual (TDD) of the feed circuit.

[0154] In one embodiment, the first switch 261 may be a single pole fourth-throw (SPFT). It should be understood that in the embodiments of this application, the switch may be selected according to actual production or design, or it may be a single pole xthrow (SPXT). The embodiments of this application do not limit this, only requiring that the number of connection ports of the switch is greater than the number of electronic components or radio frequency channels that need to be connected.

[0155] In one embodiment, the border 11 may further include a third side 233 that intersects the first side 231 at an angle, such as... Figure 7 As shown. The first side 231 may also include a fourth position 204, and the first position 201 may be located between the second position 202 and the fourth position 204. The third side 233 may include a fifth position 205. In one embodiment, the fifth position 205 may also be located on the first side 231. This application embodiment does not limit this and can be adjusted according to actual production or design. For the sake of brevity, only the example of the fifth position 205 being set on the third side 233 is used for explanation. The fourth position 204 has a second gap 242. The border 11 between the first position 201 and the fourth position 204 is the third border 2113. The border 11 between the fourth position 204 and the fifth position 205 is the fourth border 2114.

[0156] The radiator 211 includes a third frame 2113 and a fourth frame 2114. The fourth frame 2114 is grounded by coupling to the ground plane 230 at a fifth position 205. The fourth frame 2114 includes a connection point 254, at which the fourth frame 2114 is grounded by coupling to the ground plane 230.

[0157] It should be understood that connection point 254 can be used to adjust the current distribution on the ground plane 230 when the first antenna 210 is operating in the first frequency band, so that the maximum radiation direction of the radiation pattern generated by the first frequency band is closer to the maximum radiation direction of the radiation pattern generated by the second frequency band, reducing the difference between the maximum radiation direction of the radiation pattern generated by the first frequency band and the maximum radiation direction of the radiation pattern generated by the second frequency band, increasing the overlap between the radiation patterns generated by the first frequency band and the second frequency band, and improving the accuracy of the first antenna 210 in transmitting Beidou communication short messages.

[0158] Furthermore, the position of the first position 201 between the second position 202 and the third position 203 can adjust the radiation performance of the first antenna 210 in the first frequency band (e.g., the position of the resonant point and the direction of maximum radiation).

[0159] In one embodiment, the distance between connection point 254 and fourth position 204 is less than the distance between connection point 254 and fifth position 205, so that the maximum radiation direction of the radiation pattern generated by the first frequency band is closer to the maximum radiation direction of the radiation pattern generated by the second frequency band.

[0160] In one embodiment, the first slot 241 and the second slot 242 can be symmetrical about a virtual axis of the first side 231, which can be understood as the axis of symmetry of the first side 231. It should be understood that as the symmetry of the structure of the first antenna 210 increases, the radiation performance of the first antenna 210 will also increase.

[0161] In one embodiment, the first power supply unit 220 may further include a third radio frequency channel 223, which may be electrically connected to the third port of the first switch 261.

[0162] In one embodiment, the electronic device 200 may further include a second power supply unit 212, a third power supply unit 213, and a fourth power supply unit 214, such as Figure 8 As shown. The second frame 2112 includes a second feed point 252, and the third frame 2113 includes a third feed point 253. The second feed unit 212 is coupled to the second frame 2112 at the second feed point 252. The third feed unit 213 is coupled to the third frame 2113 at the third feed point 253. The fourth feed unit 214 is coupled to the fourth frame 2114 at a connection point 254 (in the case of radiator reuse, the connection point 254 can serve as the fourth feed point).

[0163] It should be understood that the first frame 2111 and the third radio frequency channel 223 in the first feeding unit 220 can form a second antenna (when the first antenna 210 is not working, the common port of the first switch 261 is connected to the third port, and radio frequency signals are fed in by the third radio frequency channel 223). In one embodiment, the operating frequency band of the second antenna may include at least a portion of the low-frequency bands of cellular networks, such as B5 (824MHz–849MHz), B8 (890MHz–915MHz), and B28 (704MHz–747MHz) in LTE.

[0164] The second frame 2112 and the second feed unit 212 can form a third antenna. In one embodiment, the operating frequency band of the third antenna may include at least a portion of the mid-to-high frequency bands of the cellular network, such as B1 (1920MHz–1980MHz), B3 (1710MHz–1785MHz), and B7 (2500MHz–2570MHz) in LTE.

[0165] The third frame 2113 and the third feed unit 213 can form a fourth antenna. In one embodiment, the operating frequency band of the fourth antenna may include at least a portion of the 5G frequency band of WiFi and the sub-6G frequency band (e.g., N77, N78 or N79 band).

[0166] The fourth frame 2114 and the fourth feed unit 214 can form a fifth antenna. In one embodiment, the operating frequency band of the fifth antenna may include at least the L5 band of GPS and the 2.4G band of WiFi.

[0167] Because the space layout within electronic devices is relatively compact, the first antenna 210 can reuse the radiator with antennas of other frequency bands, thereby enabling the antenna layout of more communication frequency bands to be implemented in the same space. The operating frequency bands of the second, third, fourth, or fifth antennas mentioned above are only used as examples. In actual applications, they can be adjusted according to production or design needs, and the embodiments of this application do not impose any limitations on this.

[0168] In one embodiment, the electronic device 200 further includes a second switch 262, the common port of the second switch 262 being coupled to the second frame 2112 at the second power supply point 252, the first port of the second switch 262 being grounded, and the second port of the second switch 262 being electrically connected to the second power supply unit 212.

[0169] In one embodiment, the electronic device 200 further includes a third switch 263, the common port of the third switch 263 being coupled to the fourth frame 2114 at connection point 254, and the first port of the third switch 263 being grounded.

[0170] It should be understood that since the first antenna 210 shares the same radiator with the second, third, fourth, and fifth antennas, when the first antenna 210 is working, the second, third, fourth, and fifth antennas are not working.

[0171] Correspondingly, the common port of the first switch 261 is connected to the first port (first RF channel) and the second port (second RF channel) in different time slots, so that the first feed point is fed with RF signals of the first frequency band and the second frequency band.

[0172] Because the radio frequency signal fed into the first feed point has a relatively high power in the satellite communication frequency band, when the second switch 262 is not installed, some of the radio frequency signal will be fed back from the second feed point 252 to the second feed unit 212, causing damage to the electronic components between the second feed point 252 and the second feed unit 212. Therefore, when the first antenna 210 is working, the common port of the second switch 262 is connected to the first port, making the second frame 2112 grounded at the second feed point 252, preventing the radio frequency signal fed into the first feed point from being fed back into the second feed unit 212, thereby preventing damage to the electronic components between the second feed point 252 and the second feed unit 212.

[0173] The common port of the third switch 263 is connected to the first port, causing the fourth frame 2114 to be grounded at connection point 254. Grounding the fourth frame 2114 at connection point 254 can be used to make the maximum radiation direction of the radiation pattern generated by the first frequency band closer to the maximum radiation direction of the radiation pattern generated by the second frequency band.

[0174] In one embodiment, the electronic device may further include a first matching network 271, such as Figure 9 As shown. The first matching network 271 can be used to achieve impedance matching for the first antenna in the first frequency band.

[0175] It should be understood that a matching network can match the characteristics (e.g., impedance matching) between the RF signal in the feed unit and the radiator, minimizing transmission loss and distortion of the RF signal and improving the antenna's radiation performance. Simultaneously, different impedances can also adjust the frequency of the resonant point of the resonance generated by the first antenna in the first frequency band.

[0176] In one embodiment, the first matching network 271 may include a fourth switch 2711 and a plurality of electronic components 2712, the electronic components 2712 being electrically connected between the first feed point 251 and the fourth switch 2711, and the common port of the fourth switch 2711 being grounded.

[0177] In one embodiment, the fourth switch 2711 can be an xpole xthrow (XPXT).

[0178] It should be understood that the fourth switch 2711 can be used to adjust the impedance value connected to the first feed point 251 when the first antenna is operating in the first frequency band, so as to improve the radiation performance of the first antenna in the second frequency band. At the same time, different impedances can also adjust the frequency of the resonant point of the resonance generated by the first antenna in the second frequency band.

[0179] In one embodiment, the electronic device may further include a second matching network 272, such as Figure 10As shown. The second matching network 272 can be used to achieve impedance matching for the first antenna in a second frequency band. In one embodiment, the electronic device may further include a third matching network 273, such as... Figure 10 As shown. The third matching network 273 can be used to achieve impedance matching of the third antenna in the second frequency band when the first antenna is not working. At the same time, different impedances can also adjust the frequency of the resonant point generated by the second antenna, so that the resonant frequency band of the second antenna can include different communication frequency bands.

[0180] In one embodiment, the second matching network 272 may include a fifth switch 2721 and a plurality of electronic components 2722, the electronic components 2722 being electrically connected between the first port of the second switch 262 and the fifth switch 2721, the common port of the fifth switch 2721 being grounded.

[0181] It should be understood that when the first antenna is working, the common port of the second switch 262 is connected to the first port. The fifth switch 2721 can be used to adjust the impedance value connected to the second feed point 252 when the first antenna is working in the second frequency band, so as to improve the radiation performance of the first antenna in the second frequency band.

[0182] In one embodiment, the third matching network 273 may include a sixth switch 2731 and a plurality of electronic components 2732, the electronic components 2732 being electrically connected between the second port of the second switch 262 and the sixth switch 2731, the common port of the sixth switch 2731 being grounded.

[0183] It should be understood that when the first antenna is not working and the third antenna is working, the common port of the second switch 262 is connected to the second port. The sixth switch 2731 can be used to adjust the impedance value connected to the second feed point 252 when the third antenna is working, so as to improve the radiation performance of the third antenna.

[0184] In one embodiment, the fifth switch 2721 or the sixth switch 2731 can be a multipole multithrow (XPXT).

[0185] Figure 11 yes Figure 8 The simulation results of the S-parameters of the first antenna 210 are shown in the figure.

[0186] like Figure 11 As shown, the first antenna can resonate around 1.6 GHz and 2.5 GHz.

[0187] With S11 < -4dB as the boundary, the operating frequency band of the first antenna can include 1610MHz to 1626.5MHz and 2483.5MHz to 2500MHz.

[0188] Figure 12 and Figure 13 yes Figure 8 The diagram shows the current distribution when the first antenna 210 is operating. Figure 12 yes Figure 8 The diagram shows the current distribution of the first antenna 210 in the first frequency band (1.62 GHz). Figure 13 yes Figure 8 The diagram shows the current distribution of the first antenna 210 in the second frequency band (2.5 GHz).

[0189] like Figure 12 As shown, when the first antenna is working, in the first frequency band (1.62GHz), it can generate a first current to the left (negative y-axis) and a second current downward (negative x-axis) on the floor in the lateral and longitudinal modes. The first and second currents can make the first antenna exhibit left-hand circular polarization in the first frequency band (1.62GHz).

[0190] like Figure 13 As shown, when the first antenna is working, in the second frequency band (2.5GHz), a third current to the left (positive y-axis) and a fourth current downward (positive x-axis) can be generated on the floor by the lateral mode and the longitudinal mode. The third current and the fourth current can make the first antenna right-hand circularly polarized in the second frequency band (2.5GHz).

[0191] Figure 14 and Figure 15 yes Figure 8 The axial ratio radiation pattern of the first antenna 210 is shown. Figure 14 yes Figure 8 The first antenna 210 shown has an axial ratio pattern in the first frequency band (1.62 GHz). Figure 15 yes Figure 8 The first antenna 210 shown has an axial ratio pattern in the second frequency band (2.5 GHz).

[0192] like Figure 14 As shown, the first antenna produces an axial ratio pattern in the first frequency band (1.62 GHz) with an axial ratio dip in the z-direction (the screen direction of the electronic device). In this region, the axial ratio requirement for circular polarization can be met (e.g., axial ratio < 10 dB), and the antenna exhibits circular polarization characteristics.

[0193] like Figure 15 As shown, the first antenna produces an axial ratio pattern in the second frequency band (2.5 GHz) with an axial ratio dip in the z-direction (the screen direction of the electronic device). In this region, the axial ratio requirement for circular polarization can be met (e.g., axial ratio < 10 dB), and the antenna exhibits circular polarization characteristics.

[0194] Figure 16 yes Figure 8The simulation results of the gain of the first antenna 210 in the first frequency band (1.62GHz) and the second frequency band (2.5GHz) are shown.

[0195] It should be understood that, such as Figure 16 As shown in (a) in the figure, θ is the angle between the xoy plane and the x-axis, and θ is the angle between the xoy plane and the z-axis.

[0196] like Figure 16 Figures (b) and (c) show the simulation results of the first antenna gain in the first frequency band (1.62 GHz) and the second frequency band (2.5 GHz), respectively.

[0197] like Figure 16 As shown in (b) and (c), the radiation pattern of the first antenna produced by left-hand circular polarization in the first frequency band (1.62 GHz) and by right-hand circular polarization in the second frequency band (2.5 GHz) are... The overlapping region of 30°≤θ≤60° can generate radiation beams that enable electronic devices to perform well in satellite communications.

[0198] Figure 17 This is a schematic diagram of a graphical user interface (GUI) provided in an embodiment of this application.

[0199] It should be understood that since the overlapping area of ​​the radiation pattern generated by the first antenna in the first frequency band and the radiation pattern generated in the second frequency band has good satellite communication performance, when a user needs to conduct satellite communication, it is necessary to instruct the user to align with the satellite. Figure 17 The illustration shows a GUI diagram that instructs the user to perform alignment. It is used as an example only, and the embodiments of this application do not impose any limitations on it.

[0200] like Figure 17 As shown in (a), when a user enables satellite communication, the electronic device displays the satellite's position on the interface and instructs the user to align with the satellite in the horizontal direction (e.g., the direction parallel to the horizontal plane).

[0201] like Figure 17 As shown in (b), when the user has completed horizontal alignment with the satellite, the user can be instructed to align with the satellite in the vertical direction (e.g., the direction perpendicular to the horizontal plane).

[0202] When the user completes Figure 17 When the steps shown are performed, the overlapping area of ​​the radiation pattern generated by the first antenna in the first frequency band and the radiation pattern generated in the second frequency band can be aligned with the satellite to enable satellite communication.

[0203] Figure 18This is a schematic diagram of another electronic device 200 provided in the embodiments of this application.

[0204] like Figure 18 As shown, the electronic device includes a rotating shaft 310, a first housing 301, and a second housing 302.

[0205] The rotating shaft 301 is located between the first housing 301 and the second housing 302, and the rotating shaft 310 is rotatably connected to both the first housing 301 and the second housing 302. The first housing 301 includes a first conductive frame 321, and the second housing 302 includes a second conductive frame 322.

[0206] It should be understood that Figure 18 The only difference between the electronic device 200 shown and the electronic device 200 in the above embodiments is that... Figure 18 The electronic device 200 shown is a foldable electronic device. In the above embodiment, the first antenna 210 can be set on the first conductive frame 321. Correspondingly, the second antenna, third antenna, fourth antenna and fifth antenna can also be set accordingly.

[0207] In one embodiment, when the electronic device 200 is in a folded state, such as Figure 19 As shown, the first conductive frame 321 is close to the second conductive frame 322, and a portion of the frame on the second conductive frame 322 can serve as a parasitic branch of the first antenna 210 (or the second antenna, third antenna, fourth antenna, and fifth antenna).

[0208] It should be understood that, in the folded state, the parasitic stubs provided on the second conductive frame 322 can be used to improve the efficiency of the antenna provided on the first conductive frame 321. Simultaneously, by utilizing the parasitic stubs, the maximum radiation direction of the radiation pattern generated by the first frequency band or the second frequency band can be manipulated, causing the radiation patterns generated by the first and second frequency bands to overlap, thereby improving the satellite communication performance of the electronic device.

[0209] Figure 20 and Figure 21 yes Figure 18 The simulation results of the first antenna's gain in the first frequency band (1.62 GHz) and the second frequency band (2.5 GHz) are shown. Figure 20 yes Figure 18 The simulation results show the gain of the first antenna in the first frequency band (1.62 GHz) and the second frequency band (2.5 GHz) when the electronic device is in the deployed state. Figure 21 yes Figure 18 The simulation results show the gain of the first antenna in the first frequency band (1.62 GHz) and the second frequency band (2.5 GHz) when the electronic device is in the folded state.

[0210] like Figure 20 Figures (a) and (b) show the simulation results of the gain of the first antenna in the first frequency band (1.62 GHz) and the second frequency band (2.5 GHz) when the electronic device is in the deployed state.

[0211] like Figure 20 As shown in (a) and (b), when the electronic device is in the deployed state, the radiation pattern of the first antenna generated by left-hand circular polarization in the first frequency band (1.62 GHz) and the radiation pattern generated by right-hand circular polarization in the second frequency band (2.5 GHz) are at 110°. The overlapping region of 30°≤θ≤65° can generate radiation beams that enable electronic devices to perform well in satellite communications.

[0212] like Figure 21 Figures (a) and (b) show the simulation results of the gain of the first antenna in the first frequency band (1.62 GHz) and the second frequency band (2.5 GHz) when the electronic device is in the folded state.

[0213] like Figure 21 As shown in (a) and (b), when the electronic device is in the folded state, the radiation pattern of the first antenna in the first frequency band (1.62 GHz) generated by left-hand circular polarization and the radiation pattern in the second frequency band (2.5 GHz) generated by right-hand circular polarization are... The overlapping region of 50°≤θ≤80° allows the generated radiation beams to provide good performance for electronic devices in satellite communications.

[0214] Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0215] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0216] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the direct coupling or communication connection between devices or units may be electrical or other forms.

[0217] 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 electronic device, characterized in that, include: The first conductive frame includes a first side and a second side that intersect at an angle. The first side includes a first position and a second position. The second side includes a third position. The second position is located between the first position and the third position. A first gap is formed at the second position. The frame between the first position and the second position is the first frame. The frame between the second position and the third position is the second frame. An antenna, comprising a radiator, the radiator comprising a first frame and a second frame, the first frame being grounded at a first position, the second frame being grounded at a third position, the antenna operating frequency band comprising a first frequency band and a second frequency band, the frequency of the first frequency band being lower than the frequency of the second frequency band; The antenna includes only a first feed point, which is located on the first frame and is used to feed the first frame and the second frame. The first power supply unit includes a first radio frequency (RF) channel and a second RF channel. The first RF channel is coupled to the first frame at the first power supply point, and the second RF channel is coupled to the first frame at the first power supply point. The operating frequency band of the first RF channel includes the first frequency band, and the operating frequency band of the second RF channel includes the second frequency band.

2. The electronic device according to claim 1, characterized in that, The electronic device further includes a first switch, the common port of the first switch being coupled to the first frame at the first power supply point, the first port of the first switch being electrically connected to the first radio frequency channel, and the second port of the first switch being electrically connected to the second radio frequency channel.

3. The electronic device according to claim 2, characterized in that, The first edge includes a fourth position, which is located between the second position and the fourth position. The fourth position has a second gap, and the border between the first position and the fourth position is a third border. The border also includes a third side that intersects the first side at an angle, the third side or the first side includes a fifth position, and the border between the fourth position and the fifth position is the fourth border; The radiator includes the third border and the fourth border.

4. The electronic device according to claim 3, characterized in that, The first gap and the second gap are symmetrical along the virtual axis of the first side.

5. The electronic device according to claim 3, characterized in that, The fourth frame includes a connection point, and the fourth frame is grounded at the fifth position and the connection point.

6. The electronic device according to claim 5, characterized in that, The distance between the connection point and the fourth position is less than the distance between the connection point and the fifth position.

7. The electronic device according to claim 5, characterized in that, The first power supply unit further includes a third radio frequency channel, which is electrically connected to the third port of the first switch; The electronic device further includes a second power supply unit, a third power supply unit, and a fourth power supply unit; The second frame includes a second feed point, and the second feed unit is coupled to the second frame at the second feed point; The third frame includes a third feed point, and the third feed unit is coupled to the third frame at the third feed point; The fourth power supply unit is coupled to the fourth frame at the connection point.

8. The electronic device according to claim 7, characterized in that, The electronic device further includes a second switch, the common port of the second switch being coupled to the second frame at the second power supply point, the first port of the second switch being grounded, and the second port of the second switch being electrically connected to the second power supply unit.

9. The electronic device according to claim 7 or 8, characterized in that, The electronic device further includes a third switch, the common port of which is coupled to the fourth frame at the connection point, and the first port of the third switch is grounded.

10. The electronic device according to claim 8, characterized in that, The electronic device further includes a first matching network, which includes a fourth switch and a plurality of first electronic components. The first electronic components are electrically connected between the first feed point and the fourth switch, and the common port of the fourth switch is grounded.

11. The electronic device according to claim 8, characterized in that, The electronic device further includes a second matching network, which includes a fifth switch and a plurality of second electronic components. The second electronic components are electrically connected between a first port of the second switch and the fifth switch, and the common port of the fifth switch is grounded.

12. The electronic device according to claim 8, characterized in that, The electronic device further includes a third matching network, which includes a sixth switch and a plurality of third electronic components. The third electronic components are electrically connected between the second port of the second switch and the sixth switch, and the common port of the sixth switch is grounded.

13. The electronic device according to any one of claims 1 to 8, characterized in that, The electronic device includes a rotating shaft, a first housing, and a second housing; The rotating shaft is located between the first housing and the second housing, and is rotatably connected to both the first housing and the second housing. The first housing includes a first conductive frame, and the second housing includes a second conductive frame.

14. The electronic device according to any one of claims 1 to 8, characterized in that, The distance between the first feed point and the second position is less than one-third of the distance between the first position and the second position.

15. The electronic device according to any one of claims 1 to 8, characterized in that, The antenna's circular polarization axial ratio in the first frequency band is less than or equal to 10 dB, and / or, The circular polarization axial ratio of the antenna in the second frequency band is less than or equal to 10 dB.

16. The electronic device according to any one of claims 1 to 8, characterized in that, The distance L3 between the first position and the third position and the length L4 of the first side satisfy: 7×L4 / 16≤L3≤9×L4 / 16.

17. The electronic device according to any one of claims 1 to 8, characterized in that, The first frequency band includes 1610MHz to 1626.5MHz, and / or the second frequency band includes 2483.5MHz to 2500MHz.

18. The electronic device according to any one of claims 1 to 8, characterized in that, The resonance of the antenna in the first frequency band is mainly excited by the first frame, and the resonance of the antenna in the second frequency band is mainly excited by the second frame.

19. The electronic device according to any one of claims 1 to 8, characterized in that, The circular polarization direction of the first frequency band excited by the first frame is opposite to the circular polarization direction of the second frequency band excited by the second frame.

20. The electronic device according to any one of claims 1 to 8, characterized in that, The antenna is polarized in the first frequency band as left-hand circular polarization, and / or... The antenna is right-hand circularly polarized in the second frequency band.

21. The electronic device according to any one of claims 1 to 8, characterized in that, The resonance generated by the antenna in the first frequency band and the resonance generated by the antenna in the second frequency band share the first gap.

22. The electronic device according to any one of claims 1 to 8, characterized in that, The length of the first border is greater than the length of the second border.

23. The electronic device according to any one of claims 1 to 8, characterized in that, The antenna is used in a satellite communication system, the first frequency band includes the transmitting frequency band of the satellite communication system, and the second frequency band includes the receiving frequency band of the satellite communication system.

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