An electronic device

Abstract

The embodiment of the application provides an electronic device comprising an antenna. The antenna has a conductive part of a frame of the electronic device as a radiator. The antenna further comprises a metal connecting piece, first and second ends of the metal connecting piece being coupled to the radiator, for feeding an electric signal to the radiator.

Description

Technical Field

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

[0002] With the development of the information age, the demand for data rates is increasing, and the need for high-speed performance is also growing the demand for over-the-air (OTA) testing of antennas. When users hold electronic devices such as mobile phones and tablets, the human body affects the radiation efficiency of some antennas. For example, when a user holds a smartphone close to their ear to make a call, or in other words, when the smartphone is in a head-and-hand (BHH) position, the radiation efficiency of low-frequency antennas (e.g., below 1 GHz) may decrease by about 8-10 dB, and that of mid-to-high-frequency antennas (e.g., above 1 GHz) may decrease by about 6-8 dB. Given the increasingly limited space available for electronic devices, designing antennas with good OTA performance is a pressing issue that needs to be addressed. Summary of the Invention

[0003] This application provides an electronic device including an antenna. The antenna uses a conductive portion of the frame of the electronic device as a radiator. The antenna also includes a metal connector, with a first end and a second end coupled to the radiator for feeding an electrical signal to the radiator.

[0004] In a first aspect, an electronic device is provided, including a frame, the frame including a first position, a second position, a third position, and a fourth position, the second position being located between the first position and the third position, the third position being located between the second position and the fourth position, the frame having a first gap at the second position, and the frame having a second gap at the third position; an antenna, the antenna including a first radiator, a second radiator, a third radiator, a first feeding circuit, and a first metal connector, the first metal connector including a first feeding point, the first feeding circuit being coupled to the first feeding point, and the first radiator including a first connection point. The third radiator includes a second connection point, a first end of the first metal connector is coupled to the first connection point, and a second end of the first metal connector is coupled to the second connection point; wherein, the first radiator is a first border between the first position and the second position, the second radiator is a second border between the second position and the third position, and the third radiator is a third border between the third position and the fourth position; the lengths L1 of the first border, L2 of the second border, and L3 of the third border satisfy: L1 < L2, L3 < L2, and L3 × 90% ≤ L1 ≤ L3 × 110%.

[0005] According to an embodiment of this application, the first radiator and the third radiator can form a first sub-antenna. Since the first radiator and the third radiator are approximately the same length, they can jointly form a first resonance. Simultaneously, because a second radiator 220 is spaced between the first radiator 210 and the third radiator 230 (the distance between the first radiator 210 and the third radiator 230 is relatively large), the current density on the ground plane 201 is low when the first radiator 210 and the third radiator 230 jointly form the first resonance. Due to the low current density on the ground plane 201, the intensity of hot spots on the front side of the electronic device (e.g., the side where the display screen is located) and the back side of the electronic device (e.g., the side where the back cover is located) is correspondingly low.

[0006] One reason is that because the display screen of electronic devices has a metal layer that can block radiation, the hot spots on the front of the electronic devices are lower.

[0007] Meanwhile, since there is a second radiator between the first and third radiators (the distance between the first and third radiators is relatively large), the hot spots generated by the first and third radiators are more dispersed, which can reduce the intensity of the hot spots.

[0008] Furthermore, the second radiator 220 can be used to form a second sub-antenna to generate a second resonance. Because the frequency of the second resonance generated by the second radiator is low and the length of the second radiator 220 is relatively long, the current (magnetic field) generated by the second radiator is more dispersed, resulting in a lower hot spot.

[0009] In conjunction with the first aspect, in some implementations of the first aspect, the second radiator includes a third connection point, and the third end of the first metal connector is coupled to the third connection point.

[0010] According to embodiments of this application, the first sub-antenna and the second sub-antenna can be considered as a single antenna, or a single antenna. The first radiator, the second radiator, and the third radiator are all fed with electrical signals through a first feed point on the first metal connector. In some embodiments of this application, the first feed point is used to feed electrical signals of a first operating frequency band and an electrical signal of a second operating frequency band. The first sub-antenna is used to generate the aforementioned first resonance, which supports the antenna operating in the first operating frequency band; the second sub-antenna is used to generate the aforementioned second resonance, which supports the antenna operating in the second operating frequency band. The first and second sub-antennas can be considered to be fed with electrical signals using a combined feed method.

[0011] In conjunction with the first aspect, in some implementations of the first aspect, the antenna includes a second feeding circuit; the second radiator includes a second feeding point, and the second feeding circuit is coupled to the second feeding point.

[0012] According to the embodiments of this application, the first sub-antenna and the second sub-antenna can be considered as two antennas, or in other words, the first sub-antenna and the second sub-antenna are independent antennas. The first radiator and the third radiator can be fed with electrical signals of the first operating frequency band through the first feed point on the first metal connector, and the second radiator can be fed with electrical signals of the second operating frequency band through the second feed point. The first sub-antenna and the second sub-antenna can be considered as feeding electrical signals in a split-feed manner.

[0013] In conjunction with the first aspect, in some implementations of the first aspect, L1 and L3 satisfy the following condition: L3×95%≤L1≤L3×105%.

[0014] In conjunction with the first aspect, in some implementations of the first aspect, the antenna further includes a first electronic component and a second electronic component; the first electronic component is coupled between a first end of the first metal connector and the first connection point, and the second electronic component is coupled between a second end of the first metal connector and the second connection point.

[0015] In conjunction with the first aspect, in some implementations of the first aspect, the first end of the first radiator is opposite to and does not contact the first end of the second radiator, and the first end of the third radiator is opposite to and does not contact the second end of the second radiator; the first end of the first radiator and the first end of the third radiator are grounded ends, and the second end of the first radiator and the second end of the third radiator are open ends, or the first end of the first radiator and the first end of the third radiator are open ends, and the second end of the first radiator and the second end of the third radiator are grounded ends.

[0016] In conjunction with the first aspect, in some implementations of the first aspect, the first radiator and the third radiator are used to generate a first resonance; the second radiator is used to generate a second resonance, wherein the frequency of the resonance point of the second resonance is lower than the frequency of the resonance point of the first resonance.

[0017] In conjunction with the first aspect, in some implementations of the first aspect, the first end of the second radiator is a grounded end and the second end of the second radiator is an open end; L1, L2, and L3 satisfy: L1×1.5≤L2≤L1×4.5, and / or, L3×1.5≤L2≤L3×4.5, and the ratio of the frequency of the first resonance to the frequency of the second resonance is greater than or equal to 1.5 and less than or equal to 4.5.

[0018] According to an embodiment of this application, in one embodiment, the ratio of the frequency of the first resonance to the frequency of the second resonance can be understood as the ratio of the center frequency of the resonant frequency band formed by the first resonance (e.g., with S11 < -4dB as the boundary) to the center frequency of the resonant frequency band formed by the second resonance. In one embodiment, the ratio of the frequency of the first resonance to the frequency of the second resonance can be understood as the ratio of the center frequency of the operating frequency band included in the resonant frequency band formed by the first resonance to the center frequency of the operating frequency band included in the resonant frequency band formed by the second resonance.

[0019] In a second aspect, an electronic device is provided, including a frame comprising a first position, a second position, a third position, and a fourth position, wherein the second position is located between the first position and the third position, the third position is located between the second position and the fourth position, the frame has a first gap at the second position, and the frame has a second gap at the third position; an antenna comprising a first radiator, a second radiator, and a third radiator, wherein a first end of the first radiator is opposite to and does not contact the first end of the second radiator, and a first end of the third radiator is opposite to and does not contact the second end of the second radiator, the first end of the first radiator and the first end of the third radiator are grounded ends, and the first end and the second end of the second radiator are open ends; wherein the antenna further comprises a first feeding circuit, a first metal connector, and a second metal connector, the second radiator comprising a ground point, a first feeding point, a first connection point, and a second connection point, the ground point and the first feeding point, the second radiator comprising a first feeding point, a first connection point, and a second connection point, the first feeding point and the third radiator comprising a first feeding point, a first connection ... A power supply point is located between the first connection point and the second connection point. The second radiator is grounded at the grounding point. The first power supply circuit is coupled to the first power supply point. The first radiator includes a third connection point. The first end of the first metal connector is coupled to the first connection point, and the second end of the first metal connector is coupled to the third connection point. The third radiator includes a fourth connection point. The first end of the second metal connector is coupled to the second connection point, and the second end of the second metal connector is coupled to the fourth connection point. The first radiator is a first frame between the first position and the second position. The second radiator is a second frame between the second position and the third position. The third radiator is a third frame between the third position and the fourth position. The lengths L1 of the first frame, L2 of the second frame, and L3 of the third frame satisfy: L1 < L2, L3 < L2, and L3 × 90% ≤ L1 ≤ L3 × 110%.

[0020] In conjunction with the second aspect, in some implementations of the second aspect, the grounding point is located in the central region of the second radiator; the second radiator further includes a second feed point, the grounding point being located between the first feed point and the second feed point; the antenna further includes a third metal connector, the third metal connector including a third feed point, a first end of the third metal connector being coupled to the first feed point, a second end of the third metal connector being coupled to the second feed point, and the first feed circuit being coupled to the third feed point.

[0021] In conjunction with the second aspect, in some implementations of the second aspect, the third power supply point is located in the central region of the third metal connector.

[0022] In conjunction with the second aspect, in some implementations of the second aspect, the length D3 of the third metal connector and the length L2 satisfy: L2×6%≤D3≤L2×25%.

[0023] In conjunction with the second aspect, in some implementations of the second aspect, the first connection point is located between the grounding point and the second position; the length L4 of the border between the grounding point and the second position, the L1 and the L2 satisfy: L1×33%≤L4≤L2×33%.

[0024] In conjunction with the second aspect, in some implementations of the second aspect, the antenna further includes a first electronic component and a second electronic component; the first electronic component is coupled between a first end of the first metal connector and the first connection point, and the second electronic component is coupled between a first end of the second metal connector and the second connection point.

[0025] In conjunction with the second aspect, in some implementations of the second aspect, the length D1 of the first metal connector satisfies L1×25%≤D1≤L1, and / or the length D2 of the second metal connector satisfies L3×25%≤D2≤L3.

[0026] Thirdly, an electronic device is provided, including a frame comprising a first position, a second position, a third position, and a fourth position, wherein the second position is located between the first position and the third position, the third position is located between the second position and the fourth position, the frame has a first gap at the second position, and the frame has a second gap at the third position; an antenna comprising a first radiator, a second radiator, and a third radiator, wherein a first end of the first radiator is opposite to and does not contact the first end of the second radiator, and a first end of the third radiator is opposite to and does not contact the second end of the second radiator, the first ends of the first radiator and the first ends of the third radiator are open ends, and the first ends and second ends of the second radiator are open ends; wherein the antenna further includes a first feeding circuit and a first metal connector, and the second radiator includes a grounding circuit. The system comprises a grounding point, a first feed point, and a second feed point. The grounding point and the first feed point are located between the first feed point and the second feed point. The second radiator is grounded at the grounding point. The first metal connector includes a third feed point. The first end of the first metal connector is coupled to the first feed point, and the second end of the first metal connector is coupled to the second feed point. The first feed circuit is coupled to the third feed point. The first radiator is a first frame between the first position and the second position. The second radiator is a second frame between the second position and the third position. The third radiator is a third frame between the third position and the fourth position. The lengths L1 of the first frame, L2 of the second frame, and L3 of the third frame satisfy: L1 < L2, L3 < L2, and L3 × 90% ≤ L1 ≤ L3 × 110%.

[0027] In conjunction with the third aspect, in some implementations of the third aspect, the grounding point is located in the central region of the second radiator.

[0028] In conjunction with the third aspect, in some implementations of the third aspect, the third power supply point is located in the central region of the third metal connector.

[0029] In conjunction with the third aspect, in some implementations of the third aspect, the length D3 of the third metal connector and the length L2 satisfy: L2×6%≤D3≤L2×25%.

[0030] In conjunction with the third aspect, in some implementations of the third aspect, the antenna further includes a first electronic component and a second electronic component;

[0031] The first end of the first electronic component is coupled to the first power supply circuit, the second end of the first electronic component is coupled to the third power supply point, the first end of the second electronic component is coupled between the first power supply circuit and the first end of the first electronic component, and the second end of the second electronic component is grounded. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the electronic device 10 provided in the embodiments of this application.

[0033] Figure 2 This is a schematic diagram of an electronic device 10 provided in an embodiment of this application.

[0034] Figure 3 This is a schematic diagram of an electronic device 10 provided in an embodiment of this application.

[0035] Figure 4 yes Figure 2 The simulation results of the S-parameters of antenna 200 are shown in the figure.

[0036] Figure 5 yes Figure 2 Simulation results of the radiation efficiency and system efficiency of the antenna 200 shown.

[0037] Figure 6 yes Figure 2 The simulation results of the antenna 200 at 1.72 GHz on the side of the electronic device are shown.

[0038] Figure 7 yes Figure 2 The simulation results of the antenna 200 at 2.44 GHz on the side of the electronic device are shown.

[0039] Figure 8 yes Figure 2 The simulation results of the antenna 200 at 1.72 GHz on the back of the electronic device are shown.

[0040] Figure 9 yes Figure 2 The simulation results of the antenna 200 at 2.44 GHz on the back of the electronic device are shown.

[0041] Figure 10 This is a schematic diagram of an electronic device 10 provided in an embodiment of this application.

[0042] Figure 11 yes Figure 10 The simulation results of the antenna 200 at 1.84 GHz on the side of the electronic device are shown.

[0043] Figure 12 yes Figure 10The simulation results of the antenna 200 at 2.5 GHz on the side of the electronic device are shown.

[0044] Figure 13 yes Figure 10 The simulation results of the antenna 200 at 1.84 GHz on the back of the electronic device are shown.

[0045] Figure 14 yes Figure 10 The simulation results of the antenna 200 at 2.5 GHz on the back of the electronic device are shown.

[0046] Figure 15 This is a schematic diagram of an electronic device 10 provided in an embodiment of this application.

[0047] Figure 16 This is a schematic diagram of an electronic device 10 provided in an embodiment of this application.

[0048] Figure 17 yes Figure 15 and Figure 16 The simulation results of the S-parameters of the antenna shown are displayed.

[0049] Figure 18 yes Figure 15 The simulation results show the radiation efficiency of the antenna and the system efficiency.

[0050] Figure 19 yes Figure 15 The diagram shows the current distribution of antenna 200 at 0.9 GHz.

[0051] Figure 20 yes Figure 15 The diagram shows the current distribution of antenna 200 at 1.8 GHz.

[0052] Figure 21 yes Figure 15 The diagram shows the current distribution of antenna 200 at 2.25 GHz.

[0053] Figure 22 yes Figure 15 The diagram shows the current distribution of antenna 200 at 2.7 GHz.

[0054] Figure 23 yes Figure 15 The diagram shows the current distribution of antenna 200 at 3.16 GHz.

[0055] Figure 24 yes Figure 15 The diagram shows the current distribution of antenna 200 at 4.39 GHz.

[0056] Figure 25 yes Figure 15The simulation results of the antenna 200 on the side of the electronic device at 1.8 GHz are shown.

[0057] Figure 26 yes Figure 15 The simulation results of the antenna 200 at 2.25 GHz on the side of the electronic device are shown.

[0058] Figure 27 yes Figure 15 The simulation results of the antenna 200 at 2.7 GHz on the side of the electronic device are shown.

[0059] Figure 28 yes Figure 15 The simulation results of the antenna 200 at 1.8 GHz on the back of the electronic device are shown.

[0060] Figure 29 yes Figure 15 The simulation results of the antenna 200 at 2.25 GHz on the back of the electronic device are shown.

[0061] Figure 30 yes Figure 15 The simulation results of the antenna 200 at 2.7 GHz on the back of the electronic device are shown.

[0062] Figure 31 This is a schematic diagram of an electronic device 10 provided in an embodiment of this application.

[0063] Figure 32 yes Figure 31 The simulation results of the S-parameters of the antenna shown are displayed.

[0064] Figure 33 yes Figure 31 The simulation results show the radiation efficiency of the antenna and the system efficiency.

[0065] Figure 34 yes Figure 31 The simulation results of the antenna 200 at 1.77 GHz on the side of the electronic device are shown.

[0066] Figure 35 yes Figure 31 The simulation results of the antenna 200 at 2.5 GHz on the side of the electronic device are shown.

[0067] Figure 36 yes Figure 31 The simulation results of the antenna 200 at 1.77 GHz on the back of the electronic device are shown.

[0068] Figure 37 yes Figure 31 The simulation results of the antenna 200 at 2.5 GHz on the back of the electronic device are shown.

[0069] Figure 38 This is a schematic diagram of an electronic device 10 provided in an embodiment of this application.

[0070] Figure 39 yes Figure 38 The simulation results of the S-parameters of the antenna shown are displayed.

[0071] Figure 40 yes Figure 38 The simulation results show the radiation efficiency of the antenna and the system efficiency.

[0072] Figure 41 yes Figure 38 The diagram shows the current distribution of antenna 200 at 0.95 GHz.

[0073] Figure 42 yes Figure 38 The diagram shows the current distribution of antenna 200 at 1.9 GHz.

[0074] Figure 43 yes Figure 38 The diagram shows the current distribution of antenna 200 at 2.51 GHz.

[0075] Figure 44 yes Figure 38 The diagram shows the current distribution of antenna 200 at 4.43 GHz.

[0076] Figure 45 yes Figure 38 The simulation results of the antenna 200 at 1.9 GHz on the side of the electronic device are shown.

[0077] Figure 46 yes Figure 38 The simulation results of the antenna 200 at 2.51 GHz on the side of the electronic device are shown.

[0078] Figure 47 yes Figure 38 The simulation results of the antenna 200 at 4.43 GHz on the side of the electronic device are shown.

[0079] Figure 48 yes Figure 38 The simulation results of the antenna 200 at 1.9 GHz on the back of the electronic device are shown.

[0080] Figure 49 yes Figure 38 The simulation results of the antenna 200 at 2.51 GHz on the back of the electronic device are shown.

[0081] Figure 50 yes Figure 38 The simulation results of the antenna 200 at 4.43 GHz on the back of the electronic device are shown.

[0082] Figure 51 This is a schematic diagram of an electronic device 10 provided in an embodiment of this application. Detailed Implementation

[0083] The following explains the terminology that may appear in the embodiments of this application.

[0084] It should be understood that the term "and / or" used in this document is merely a description of the same field in the related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0085] The phrase "within the range" used in this application includes both ends of the range by default. For example, in the range of 1 to 5, it includes the two values ​​1 and 5.

[0086] 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.

[0087] Components / devices: including at least one of lumped components / devices and distributed components / devices.

[0088] 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.

[0089] 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.

[0090] 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.

[0091] 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.

[0092] 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.

[0093] The radiator may include a conductor with a specific shape and size, such as a wire or sheet, and this application does not limit the specific shape. In one embodiment, the wire radiator may be simply referred to as a wire antenna. In one embodiment, the wire radiator may be implemented by a conductive frame, and may also be referred to as a frame antenna. In one embodiment, the wire radiator may be implemented by a support conductor, and may also be referred to as a support antenna. In one embodiment, the wire diameter (e.g., including thickness and width) of the wire radiator, or the radiator of the wire antenna, is much smaller than the wavelength (e.g., the wavelength of the medium) (e.g., less than 1 / 16 of the wavelength), and the length may be comparable to the wavelength (e.g., the wavelength of the medium) (e.g., the length is around 1 / 8 of the wavelength, or 1 / 8 to 1 / 4, or 1 / 4 to 1 / 2, or longer). The main forms of wire antennas include dipole antennas, half-wave dipole antennas, monopole antennas, loop antennas, and inverted F antennas (also known as IFA, Inverted F Antenna). For example, in a dipole antenna, each dipole antenna typically includes two radiating stubs, each fed from the feed end of the radiating stub by a feed section. For example, an inverted-F antenna (IFA) can be considered as a monopole antenna with an added ground path. An IFA antenna has one feed point and one ground point, and is called an inverted-F antenna because its side view is inverted-F shaped. In one embodiment, the sheet radiator may include a microstrip antenna or a patch antenna, such as a planar inverted-F antenna (also known as a PIFA). In one embodiment, the sheet radiator may be implemented using a planar conductor (e.g., a conductive sheet or conductive coating). In one embodiment, the sheet radiator may include a conductive sheet, such as a copper sheet. In one embodiment, the sheet radiator may include a conductive coating, such as silver paste. The shape of the sheet radiator includes circular, rectangular, and annular shapes, and this application does not limit the specific shape. The structure of a microstrip antenna generally consists of a dielectric substrate, a radiator, and a ground plane, wherein the dielectric substrate is disposed between the radiator and the ground plane.

[0094] Radiators may also include slots or gaps formed on a conductor, for example, closed or semi-closed slots or gaps formed on a grounded conductor surface. In one embodiment, a slotted or slit radiator may be simply referred to as a slot antenna or a gap antenna. In one embodiment, the radial dimension (e.g., including width) of the slot or gap of the slot antenna / gap antenna is much smaller than the wavelength (e.g., the dielectric wavelength) (e.g., less than 1 / 16 of the wavelength), while the length dimension may be comparable to the wavelength (e.g., the dielectric wavelength) (e.g., a length of approximately 1 / 8 of the wavelength, or 1 / 8 to 1 / 4, or 1 / 4 to 1 / 2, or longer). In one embodiment, a radiator with a closed slot or gap may be simply referred to as a closed slot antenna. In one embodiment, a radiator with a semi-closed slot or gap (e.g., an opening added to a closed slot or gap) may be simply referred to as an open slot antenna. In some embodiments, the gap shape is elongated. In some embodiments, the length of the gap is approximately half a wavelength (e.g., the dielectric wavelength). In some embodiments, the length of the gap is approximately an integer multiple of a wavelength (e.g., one dielectric wavelength). In some embodiments, the slot can be fed by transmission lines connected across one or both sides, thereby exciting a radio frequency electromagnetic field on the slot and radiating electromagnetic waves into space. In one embodiment, the radiator of the slot antenna or gap antenna can be implemented by a conductive frame grounded at both ends, also known as a frame antenna; in this embodiment, the slot antenna or gap antenna can be viewed as including a linear radiator, the linear radiator being spaced apart from the ground and grounded at both ends, thereby forming a closed or semi-closed slot or gap. In one embodiment, the radiator of the slot antenna or gap antenna can be implemented by a support conductor grounded at both ends, also known as a support antenna.

[0095] A power supply circuit is a combination of all circuits used for receiving and transmitting radio frequency (RF) signals. It can include a transceiver and an RF front-end. In some cases, the term "power supply circuit" is narrowly interpreted as an RF IC (Radio Frequency Integrated Circuit), which can be considered to include both the RF front-end chip and the transceiver. The power supply circuit has the function of converting radio waves (e.g., RF signals) into electrical signals (e.g., digital signals). It is generally considered part of the RF component.

[0096] In some embodiments, the electronic device may also include a test socket (or, RF socket or RF test socket). This test socket can be used to insert a coaxial cable to test the characteristics of the RF front-end circuitry or the radiator of the antenna. The RF front-end circuitry can be considered as the circuitry coupled between the test socket and the transceiver.

[0097] In some embodiments, the radio frequency front-end circuit can be integrated into a radio frequency front-end chip in an electronic device, or the radio frequency front-end circuit and the transceiver can be integrated into a radio frequency chip in an electronic device.

[0098] It should be understood that any two feed circuits in the first / second / ...Nth feed circuit of this application can share the same transceiver, for example, by transmitting signals through a radio frequency channel (e.g., a port (pin) of a radio frequency chip) in a transceiver; they can also share a radio frequency front-end circuit, for example, by processing signals through a switch or amplifier in a radio frequency front-end.

[0099] It should also be understood that the two feed circuits in the first / second / ...Nth feed circuit of this application typically correspond to two RF test sockets in an electronic device.

[0100] A matching circuit is a circuit used to adjust the radiation characteristics of an antenna. In one embodiment, the matching circuit is coupled between the feed circuit and the corresponding radiator. In another embodiment, the matching circuit is coupled between the test mount and the radiator. Typically, the matching circuit is a combination of circuits coupled between the radiator and the ground plane. In one embodiment, the matching circuit may include switches and / or electronic components, where the switches may be electronic components for switching the coupling connections of the radiator. The matching circuit has impedance matching and / or frequency tuning functions. It is typically considered part of the antenna.

[0101] The grounding / feeding structure may include connectors, such as metal springs, and the radiator is coupled to the ground / feeding circuit via the grounding structure. In some embodiments, the feeding structure may include a transmission line / feeding wire, and the grounding structure may include a grounding wire.

[0102] Antenna structures being identical or similar: This can be understood as the radiator structure of the first antenna being identical or similar to that of the second antenna. The radiator structure can include the radiator's length, the location of the grounding point, and the location of the feed point. It should be understood that radiator lengths differing by less than 10% (a ratio of radiator lengths greater than or equal to 0.9 and less than or equal to 1.1) can be considered identical or similar in length; similarly, grounding or feed point locations differing by less than 10% (e.g., the ratio of the length of the grounding point / feed point to an open end face greater than or equal to 0.9 and less than or equal to 1.1) can be considered identical or similar in location. The radiator structure can also include the matching circuit (which may include the matching circuit topology and / or the capacitance or inductance values ​​of the electronic components within the matching circuit), the connection locations of electronic components positioned between the radiator and the ground plane, and the capacitance or inductance values ​​of electronic components electrically connected to the radiator. It should be understood that equivalent capacitance or inductance values ​​differing by less than 20% can be considered identical or similar electronic components. It should also be understood that matching circuits with the same structure (the number of electronic components such as capacitors, inductors, resistors, or switches included in the matching circuit is the same, and the connection method is also the same) can be considered as matching circuits being the same or similar, and / or, matching circuits with component values ​​differing by less than 20% are considered the same or similar. It should also be understood that "same or similar" can be understood as the above structures being at least partially the same, or at least partially mirror images of each other.

[0103] The symmetry of the antenna structure in the embodiments of this application can be understood as the antenna structure being mirror image or similar.

[0104] End / Point: The term "end / point" in the context of the antenna radiator's first end / second end / feed end / ground end / feed point / ground point / connection point should not be narrowly interpreted as necessarily being a point or end physically disconnected from other radiators. It can also be considered as a point or segment on a continuous radiator. In one embodiment, "end / point" can include a connection / coupling region on the antenna radiator that is coupled to other conductive structures. For example, a feed end / feed point can be a coupling region on the antenna radiator that is coupled to a feed structure (e.g., a region facing a part of the feed structure). Similarly, a ground end / ground point can be a connection / coupling region on the antenna radiator that is coupled to a ground structure.

[0105] Open terminal, closed terminal: In some embodiments, open terminal and closed terminal are, for example, relative to whether or not they are grounded; the closed terminal is grounded, and the open terminal is not grounded. In some embodiments, open terminal and closed terminal are, for example, relative to other conductors; the closed terminal is electrically connected to other conductors, and the open terminal is not electrically connected to other conductors. In one embodiment, the open terminal may also be referred to as a floating terminal, free terminal, open terminal, or open-circuit terminal. In one embodiment, the closed terminal may also be referred to as a ground terminal or short-circuit terminal. It should be understood that in some embodiments, other conductors can be coupled through the open terminal to transfer coupled energy (which can be understood as transferring current).

[0106] In some embodiments, the understanding of "closed end" can also be from the perspective of current distribution. A closed end or ground end can be understood as a point of high current or low electric field on a radiator. In one embodiment, coupling electronic devices (e.g., capacitors, inductors, etc.) through a closed end can maintain the current distribution characteristics of the point of high current / low electric field. In one embodiment, opening a slit at or near the closed end (e.g., filling the slit with insulating material) can maintain the current distribution characteristics of the point of high current / low electric field.

[0107] In some embodiments, the understanding of "open terminal" can also be from the perspective of current distribution. An open terminal or a floating terminal can be understood as a point with a small current or a point with a large electric field on the radiator. In one embodiment, coupling electronic devices (e.g., capacitors, inductors, etc.) through an open terminal can maintain the current distribution characteristics of the point with a small current or a large electric field.

[0108] It should be understood that when an electronic device (e.g., capacitor, inductor, etc.) is coupled at the radiator end of a gap (which, from the perspective of the radiator's structure, is similar to the radiator at the opening of an open or floating end), the radiator end can be a point with a large current / small electric field. In this case, it should be understood that the radiator end at the gap is actually a closed end or a grounded end, etc.

[0109] The "floating radiator" mentioned in the embodiments of this application refers to a radiator that is not directly connected to the feed line / feed branch and / or ground line / ground branch, but is fed and / or grounded through indirect coupling.

[0110] It should be understood that "suspended" in "suspended end" or "suspended radiator" does not mean that there is no structure around the radiator to support it. In one embodiment, the suspended radiator may be, for example, a radiator disposed on the inner surface of an insulating back cover.

[0111] The current in the same direction / opposite direction mentioned in the embodiments of this application should be understood as the main current on the same side of the conductor being in the same direction / opposite direction. For example, when a current distributed in the same direction is excited on a conductor that is bent or looped (e.g., the current path is also bent or looped), it should be understood that, for example, the main current excited on the conductors on both sides of a looped conductor (e.g., on the conductors on both sides of a gap) is opposite in direction, but it still falls under the definition of current distributed in the same direction in this application. In one embodiment, current in the same direction on a conductor can mean that the current on the conductor has no reversal point. In one embodiment, current in opposite direction on a conductor can mean that the current on the conductor has at least one reversal point. In one embodiment, current in the same direction on two conductors can mean that the current on both conductors has no reversal point and flows in the same direction. In one embodiment, current in opposite direction on two conductors can mean that the current on both conductors has no reversal point and flows in opposite directions. Current in the same direction / opposite direction on multiple conductors can be understood accordingly.

[0112] Resonance / Resonant Frequency: The resonant frequency is also called the resonance frequency. The resonant frequency can have a frequency range, that is, the frequency range in which resonance occurs. The frequency corresponding to the strongest resonance point is the center frequency. The return loss characteristic of the center frequency can be less than -20dB. It should be understood that, unless otherwise specified, when the antenna / radiator mentioned in this application generates "first / second...resonance," the first resonance should be the fundamental mode resonance generated by the antenna / radiator, or in other words, the lowest frequency resonance generated by the antenna / radiator. It should be understood that the antenna / radiator can generate one or more antenna modes according to a specific design, and each antenna mode can correspond to a fundamental mode resonance.

[0113] 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.

[0114] 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.

[0115] The resonant frequency band and the operating frequency band can be the same or can partially overlap. In one embodiment, one or more resonant frequency bands of the antenna can cover one or more operating frequency bands of the antenna.

[0116] 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:

[0117]

[0118] Where L is the physical length and λ is the wavelength of the electromagnetic wave.

[0119] 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.

[0120] It should be understood that the wavelength of a 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 × 10⁸ m / s. The wavelength of a radiation signal in a 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.

[0121] Antenna system efficiency (total efficiency): refers to the ratio of input power to output power at the antenna port.

[0122] Antenna radiation efficiency refers to the ratio of the power radiated into space by an antenna (i.e., the power effectively converted into electromagnetic waves) to the active power input to the antenna. Active power input to the antenna = antenna input power - loss power; loss power mainly includes return loss power and ohmic loss power of metals and / or dielectric loss power. Radiation efficiency is a measure of an antenna's radiation capability; metal loss and dielectric loss are both factors affecting radiation efficiency.

[0123] Those skilled in the art will understand that efficiency is generally expressed as a percentage, and there is a corresponding conversion relationship between it and dB. The closer the efficiency is to 0dB, the better the efficiency of the antenna.

[0124] 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.

[0125] 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.

[0126] 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.

[0127] 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.

[0128] 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.

[0129] Ground (GND): Generally refers to at least a portion of any grounding layer, ground plane, or grounding metal layer within an electronic device (such as a mobile phone), or at least a portion of any combination of the aforementioned grounding layers, ground planes, or grounding components. "Ground" can be used for grounding components within an electronic device. In one embodiment, "ground" can be the grounding layer of a circuit board in an electronic device, or a grounding metal layer formed by a ground plane formed within the frame of the electronic device or a metal film formed beneath the screen. In one embodiment, the circuit board can be a printed circuit board (PCB), such as an 8-layer, 10-layer, or 12-14-layer board having 8, 10, 12, 13, or 14 layers of conductive material, or components separated and electrically insulated by dielectric or insulating layers such as fiberglass or polymers. In one embodiment, the circuit board includes a dielectric substrate, a grounding layer, and a trace layer, with the trace layer and grounding layer electrically connected via vias. In one embodiment, components such as displays, touchscreens, input buttons, transmitters, processors, memory, batteries, charging circuits, and system-on-chip (SoC) architectures can be mounted on or connected to a circuit board; or electrically connected to trace layers and / or ground layers in the circuit board. For example, an RF source is disposed on a trace layer.

[0130] 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.

[0131] Grounding: refers to coupling with the aforementioned ground / floor via a grounding structure and / or grounding circuit. In one embodiment, grounding can be achieved through physical grounding, such as through a structural component of the mid-frame to achieve physical grounding at a specific location on the frame (or, physical ground). In another embodiment, grounding can be achieved through device grounding, such as through devices like capacitors / inductors / resistors connected in series or parallel (or, device ground).

[0132] The technical solutions of the embodiments of this application will now be described with reference to the accompanying drawings.

[0133] like Figure 1As 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.

[0134] 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.

[0135] 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.

[0136] The middle frame 19 mainly serves to support the entire machine. Figure 1The diagram shows PCB 17 positioned between the middle frame 19 and the back cover 21. It should be understood that in one embodiment, PCB 17 may also be positioned between the middle frame 19 and the display module 15; this application does not limit this. The printed circuit board PCB 17 can be made of flame-retardant material (FR-4) dielectric substrate, Rogers dielectric substrate, or a hybrid dielectric substrate of Rogers and FR-4, etc. Here, FR-4 is a designation for a flame-retardant material grade, and Rogers dielectric substrate is a high-frequency board. Electronic components, such as radio frequency chips, are carried on PCB 17. In one embodiment, a metal layer can be provided on the printed circuit board PCB 17. This metal layer can be used for grounding the electronic components carried on the printed circuit board PCB 17, or for grounding other components, such as bracket antennas, frame antennas, etc. This metal layer can be called a ground plane, grounding plate, or grounding layer. In one embodiment, this metal layer can be formed by etching metal onto the surface of any dielectric substrate in PCB 17. In one embodiment, the grounding metal layer can be located on the side of the printed circuit board PCB 17 near the middle frame 19. In one embodiment, the edge of the printed circuit board PCB 17 can be considered as the edge of its ground plane. In one embodiment, the metal frame 19 can also be used for grounding the aforementioned components. The electronic device 10 may also have other ground planes / grounding layers, as previously described, and will not be repeated here.

[0137] 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.

[0138] The electronic device 10 may also include a frame 11, which may be formed of a conductive material such as metal. The frame 11 may be disposed between the display screen 15 and the back cover 21 and extend circumferentially around the periphery of the electronic device 10. The frame 11 may have four sides surrounding the display screen 15 to help secure the display screen 15.

[0139] In one implementation, the frame 11 made of conductive material can be directly used as the conductive frame of the electronic device 10, for example, forming the appearance of a metal frame, suitable for industrial design (ID). In another implementation, the outer surface of the frame 11 can be a conductive material, such as a metal material, thereby forming the appearance of a metal frame. In these implementations, the conductive portion of the frame 11 can be used as an antenna radiator of the electronic device 10.

[0140] In another implementation, the outer surface of the frame 11 can also be a non-conductive material, such as plastic, forming a non-metallic frame appearance suitable for non-metallic IDs. In one implementation, the inner surface of the frame 11 can include a conductive material, such as a metallic material. In this implementation, the conductive portion of the frame 11 can be used as an antenna radiator of the electronic device 10. It should be understood that the radiator (or, in other words, the conductive material of the inner surface) disposed on the inner surface of the frame 11 is attached to the non-conductive material of the frame 11 to facilitate antenna radiation, and both the conductive and non-conductive materials should be considered as part of the frame 11.

[0141] 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.

[0142] 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.

[0143] 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.

[0144] The back cover 21 can be made of metal; it can also be made of non-conductive material, such as a glass back cover, a plastic back cover, or other non-metallic back cover; or it can be made of both conductive and non-conductive materials. In one embodiment, the back cover 21, which includes conductive material, can replace the middle frame 19 and form an integral part with the frame 11, providing support for the electronic components in the whole device.

[0145] In one embodiment, conductive portions in the mid-frame 19 and / or rear cover 21 can serve as a reference ground for the electronic device 10, wherein the frame 11, PCB 17, etc. of the electronic device can be grounded through electrical connection with the mid-frame.

[0146] 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.

[0147] 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.

[0148] 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.

[0149] 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.

[0150] It should be understood that, in the embodiments of this application, when a user holds an electronic device (e.g., when the user holds the electronic device and unlocks it, or for example, when the user holds the electronic device vertically and faces the screen), the orientation of the electronic device has a top, bottom, left side and right side.

[0151] For the sake of indirectness in the discussion, the antenna structures provided in the embodiments of this application are all line antennas. In practical applications, they can also be applied to other antenna structures, such as patch antennas, etc., and the embodiments of this application do not limit them.

[0152] This application provides an electronic device including an antenna. The antenna uses a conductive portion of the electronic device's frame as a radiator. The antenna also includes a metal connector, with a first end and a second end coupled to the radiator for feeding an electrical signal into the radiator.

[0153] Figure 2 This is a schematic diagram of an electronic device 10 provided in an embodiment of this application.

[0154] like Figure 2 As shown, the electronic device 10 includes a frame 11 and an antenna 200.

[0155] The frame 11 includes a first position 101, a second position 102, a third position 103, and a fourth position 104 arranged sequentially. On the frame, the second position 102 is located between the first position 101 and the third position 103, and the third position 103 is located between the second position 102 and the fourth position 104. The frame 11 has a first gap at the second position 102 and a second gap at the third position 103. In one embodiment, the outer surface of the frame 11 is primarily conductive (e.g., a metal frame), and the first and second gaps are both seams on the frame 11 and are visible on its outer surface. In another embodiment, the outer surface of the frame 11 is primarily non-conductive (e.g., a plastic frame), and the first and second gaps are both insulating gaps between the inner conductive parts of the frame 11.

[0156] Antenna 200 includes a first radiator 210, a second radiator 220, a third radiator 230, a first feed circuit 241, and a first metal connector 251. The first metal connector 251 includes a first feed point 261, and the first feed circuit 241 is coupled to the first feed point 261. The first radiator 210 includes a first connection point 211, and the third radiator 230 includes a second connection point 212. A first end of the first metal connector 251 is coupled to the first connection point 211, and a second end of the first metal connector 251 is coupled to the second connection point 212.

[0157] It should be understood that, for the sake of brevity, the coupling connections in this application embodiment are all described using electrical connections as an example. In actual production or design, they can also be achieved through indirect coupling, and this application embodiment does not limit this.

[0158] The first radiator 210 is the first border between the first position 101 and the second position 102. The second radiator 220 is the second border between the second position 102 and the third position 103. The third radiator 230 is the third border between the third position 103 and the fourth position 104. It should be understood that "the first radiator 210 is the first border" can be interpreted as the first radiator 210 being the conductive part of the first border; similar descriptions should be interpreted similarly.

[0159] The lengths L1 of the border 11 (first border) between the first position 101 and the second position 102, L2 of the border (second border) between the second position 102 and the third position 103, and L3 of the border (third border) between the third position 103 and the fourth position 104 satisfy: L1 < L2, L3 < L2, and L3 × 90% ≤ L1 ≤ L3 × 110%.

[0160] In one embodiment, the first radiator 210 and the third radiator 230 can be used to generate a first resonance. The second radiator 220 can be used to generate a second resonance. The frequency of the resonant point of the second resonance is lower than the frequency of the resonant point of the first resonance.

[0161] It should be understood that the first radiator 210 and the third radiator 230 can be used to form the first sub-antenna. Since the lengths of the first radiator 210 and the third radiator 230 are approximately the same (L3×90%≤L1≤L3×110%), they can jointly form the first resonance. Simultaneously, because a second radiator 220 is spaced between the first radiator 210 and the third radiator 230 (the distance between the first radiator 210 and the third radiator 230 is relatively large), the current density on the ground plane 201 is low when the first radiator 210 and the third radiator 230 jointly form the first resonance. Due to the low current density on the ground plane 201, the corresponding intensity of hot spots on the front side of the electronic device (e.g., the side where the display screen is located) and the back side of the electronic device (e.g., the side where the back cover is located) is low.

[0162] Among them, hotspots can be understood as parameters related to the electric field, which can be used to show the degree of concentration of energy radiated by the antenna.

[0163] Furthermore, because the display screen of electronic devices has a metal layer that can block radiation, the hot spots on the front of the electronic device are lower.

[0164] Meanwhile, since the first radiator 210 and the third radiator 230 are separated by a second radiator 220 (the distance between the first radiator 210 and the third radiator 230 is relatively large), the hot spots generated by the first radiator 210 and the third radiator 230 are more dispersed, which can reduce the intensity of the hot spots.

[0165] Furthermore, the second radiator 220 can be used to form a second sub-antenna to generate a second resonance. Because the frequency of the second resonance generated by the second radiator 220 is low and the length of the second radiator 220 is relatively long, the current (magnetic field) generated by the second radiator 220 is more dispersed, resulting in a lower hot spot.

[0166] In one embodiment, the current on the first radiator 210 and the current on the third radiator 230 are in opposite directions.

[0167] It should be understood that the current on the first radiator 210 and the current on the third radiator 230 are opposite. Therefore, within the plane where the frame 11 is located (e.g., the yoz plane), the current on the first radiator 210 and the current on the third radiator 230 cancel each other out, and the hot spots on the side of the electronic device are more dispersed.

[0168] In one embodiment, the first power supply point 261 is located in the central region of the first metal connector 251.

[0169] It should be understood that, in one embodiment, the central region can be understood as the region within 5 mm of the center of the first metal connector 251. In one embodiment, the central region can be understood as the region within 2 mm of the center of the first metal connector 251. The length L4 of the first metal connector 251 between the center of the first metal connector 251 and the end of the first end of the first metal connector 251 is approximately the same as the length L5 of the first metal connector 251 between the center of the first metal connector 251 and the end of the second end of the first metal connector 251 (L4 × 95% ≤ L5 ≤ L4 × 105%). In one embodiment, the phases of the electrical signals fed into the first connection point 211 and the second connection point 212 are approximately the same to improve the radiation characteristics of the first sub-antenna.

[0170] In one embodiment, the electrical length D4 between the first feed point 261 and the first end of the first metal connector 251 and the electrical length D5 between the first feed point 261 and the second end of the first metal connector 251 satisfy: D4×95%≤D5≤D4×105%.

[0171] It should be understood that the electrical length D4 between the first feed point 261 and the first end of the first metal connector 251 is approximately the same as the electrical length D5 between the first feed point 261 and the second end of the first metal connector 251, and the phases of the electrical signals fed into the first connection point 211 and the second connection point 212 are approximately the same, so as to improve the radiation characteristics of the first sub-antenna.

[0172] In one embodiment, the first metal connector 251 may be a combination of one or more of the following: radio frequency transmission lines such as cables, microstrips, and coaxial lines; metal traces on a dielectric substrate (e.g., a PCB of an electronic device); metal traces on a flexible printed circuit board (FPC); metal parts (which may include, for example, metal wires and / or metal sheets) on an antenna support (e.g., based on laser direct forming (LDS)); other insulating parts such as metal parts disposed on an insulating back cover of an electronic device (which may include insulating materials such as glass and ceramic); partial conductors in the mid-frame (e.g., strip / linear / sheet conductors separated by partial cutouts in the mid-frame); other conductive connectors such as springs, tabs, conductive foam, etc. For the sake of brevity, the metal connectors in the embodiments of this application can all be understood accordingly.

[0173] In one embodiment, the length L1 of the first border and the length L3 of the third border satisfy: L3×95%≤L1≤L3×105%.

[0174] It should be understood that when the difference between the length L1 of the first frame and the length L3 of the third frame decreases, the symmetry of the first sub-antenna increases, which can improve the radiation characteristics of the first sub-antenna.

[0175] In one embodiment, the second radiator 220 may further include a third connection point 213. The third end of the first metal connector 251 is coupled to the third connection point 213.

[0176] It should be understood that in some embodiments of this application, the first sub-antenna and the second sub-antenna can be considered as a single antenna, or a single antenna 200. The first radiator 210, the second radiator 220, and the third radiator 230 are all fed with electrical signals through the first feed point 261 on the first metal connector 251. In some embodiments of this application, the first feed point 261 is used to feed in electrical signals of a first operating frequency band and electrical signals of a second operating frequency band. The first sub-antenna is used to generate the aforementioned first resonance, which supports the antenna 200 operating in the first operating frequency band; the second sub-antenna is used to generate the aforementioned second resonance, which supports the antenna 200 operating in the second operating frequency band. The first and second sub-antennas can be considered to be fed with electrical signals using a combined feed method.

[0177] In one embodiment, the antenna includes a second feed circuit 242, such as Figure 3 As shown. The second radiator 220 includes a second feed point 262, and the second feed circuit 242 is coupled to the second feed point 262.

[0178] It should be understood that in some embodiments of this application, the first sub-antenna and the second sub-antenna can be considered as two separate antennas, or in other words, the first sub-antenna and the second sub-antenna are independent antennas. The first radiator 210 and the third radiator 230 can be fed with electrical signals of the first operating frequency band through the first feed point 261 on the first metal connector 251, and the second radiator 220 can be fed with electrical signals of the second operating frequency band through the second feed point 262. The first sub-antenna and the second sub-antenna can be considered as using a split-feed method to feed electrical signals.

[0179] In one embodiment, the operating frequency band of the first sub-antenna may include at least a portion of the middle band (MB) (1710MHz-2170MHz) and the high band (HB) (2300MHz-2690MHz), and the operating frequency band of the second sub-antenna may include at least a portion of the low band (LB) (698MHz-960MHz).

[0180] In one embodiment, the operating frequency band of the first sub-antenna may include at least a portion of the sub-6G frequency bands (e.g., N77 and N79 bands), and the operating frequency band of the second sub-antenna may include at least a portion of the MB and HB frequency bands.

[0181] In one embodiment, the operating frequency band of the first sub-antenna may include at least a portion of the sub-6G frequency bands (e.g., N77, N79 bands), and the operating frequency band of the second sub-antenna may include at least a portion of the LB frequency bands.

[0182] In one embodiment, the operating frequency band of the first sub-antenna may include the L1 band of GPS, and the operating frequency band of the second antenna unit may include at least a portion of the frequency band in the LB.

[0183] It should be understood that the first and second sub-antennas can operate in different frequency bands to ensure good isolation between them. When the first and second sub-antennas are fed in a combined-feed configuration, the electrical signals transmitted by the first and second sub-antennas can be combined by a combiner and fed into the first feed point 261.

[0184] In one embodiment, the first end of the second radiator 220 is a grounded end, and the second end is an open end.

[0185] It should be understood that the embodiments of this application do not limit the antenna structure formed by the second radiator 220, but only take the example of the first end of the second radiator 220 being the ground end and the second end being the open end for illustration.

[0186] In one embodiment, when the first end of the second radiator 220 is a grounded end and the second end is an open end, the lengths L1 of the first frame, L2 of the second frame, and L3 of the third frame satisfy: L1×1.5≤L2≤L1×4.5, and / or, L3×1.5≤L2≤L3×4.5.

[0187] In one embodiment, the ratio of the frequency of the first resonance to the frequency of the second resonance is greater than or equal to 1.5 and less than or equal to 4.5.

[0188] It should be understood that, in one embodiment, the ratio of the frequency of the first resonance to the frequency of the second resonance can be understood as the ratio of the center frequency of the resonant frequency band formed by the first resonance (e.g., with S11 < -4dB as the boundary) to the center frequency of the resonant frequency band formed by the second resonance. In one embodiment, the ratio of the frequency of the first resonance to the frequency of the second resonance can be understood as the ratio of the center frequency of the operating frequency band included in the resonant frequency band formed by the first resonance to the center frequency of the operating frequency band included in the resonant frequency band formed by the second resonance. Therefore, in the above embodiments, the fact that the first sub-antenna and the second sub-antenna can operate in different frequency bands can be understood as the ratio of the center frequencies of the operating frequency bands of the two antennas being greater than or equal to 1.5 and less than or equal to 4.5.

[0189] In one embodiment, the antenna 200 may further include a first electronic component 271 and a second electronic component 272. The first electronic component 271 is coupled between a first end of the first metal connector 251 and a first connection point 211. The second electronic component 272 is coupled between a second end of the first metal connector 251 and a second connection point 212.

[0190] It should be understood that the first electronic component 271 and the second electronic component 272 can be used to adjust the boundary conditions at the first connection point 211 and the second connection point 212 so that the first sub-antenna can have better radiation characteristics.

[0191] In one embodiment, the first electronic component 271 and the second electronic component 272 can both be capacitors, inductors, or resistors. The capacitance value of the first electronic component 271 and the capacitance value of the second electronic component 272 can be approximately the same (the difference in capacitance value is within 15%), or the inductance value of the first electronic component 271 and the inductance value of the second electronic component 272 can be approximately the same (the difference in inductance value is within 15%), so that the first sub-antenna has good symmetry and improves its radiation performance.

[0192] In one embodiment, the antenna 200 may further include a third electronic component 273. The third electronic component 273 is coupled between a third end of the first metal connector 251 and a third connection point 213, such as... Figure 2 As shown, or, the third electronic component 273 is coupled between the second feed circuit 242 and the second feed point 262, as... Figure 3 As shown.

[0193] It should be understood that the third electronic component 273 can be used to adjust the boundary conditions at the third connection point 213 (or the second feed point 262) so that the second sub-antenna can have better radiation characteristics.

[0194] In one embodiment, the first end of the first radiator 210 is opposite to and does not contact the first end of the second radiator 220, and the first end of the third radiator 230 is opposite to and does not contact the second end of the second radiator 220. In one embodiment, at least a portion of the first radiator 210 and at least a portion of the second radiator 220 extend collinearly. In one embodiment, at least a portion of the second radiator 220 and at least a portion of the third radiator 230 extend collinearly. In one embodiment, at least a portion of the first radiator 210 extends collinearly with the second radiator 220 and the third radiator 230. In one embodiment, the first end of the first radiator 210 and the first end of the third radiator 230 are grounded terminals, and the second ends of the first radiator 210 and the second ends of the third radiator 230 are open terminals. In one embodiment, the first end of the first radiator 210 and the first end of the third radiator 230 are open terminals, and the second ends of the first radiator 210 and the second ends of the third radiator 230 are grounded terminals.

[0195] In this context, the collinear extension of A and B can be understood as both A and B extending along a first straight line; for example, the extension directions of A and B are both located on the first straight line. In electronic devices, the collinear extension between parts of the frame that act as radiators can be understood as being located on the same edge of the frame.

[0196] It should be understood that the antenna structure formed by the first radiator 210 is the same as or similar to the antenna structure formed by the third radiator 230 (the ground end and the open end are symmetrical along the virtual axis of the second radiator 220, the distance between the ground point on the first radiator 210 and the corresponding end is approximately the same as the distance between the ground point on the third radiator 230 and the corresponding end, and the lengths of the second radiators 220 on both sides of the virtual axis are the same), so that the first radiator 210 and the third radiator 230 can jointly generate the first resonance. For the sake of brevity, in this embodiment, only the first end of the first radiator 210 and the first end of the third radiator 230 are grounded ends, and the second end of the first radiator 210 and the second end of the third radiator 230 are open ends are used as examples for illustration.

[0197] In one embodiment, the first connection point 211 is located at the first end of the first radiator 210, and the second connection point 212 is located at the first end of the third radiator 230.

[0198] The first metal connector 251 also includes a first mating point 281 and a second mating point 282. On the first metal connector 251, a first power supply point 261 is located between the first mating point 281 and the second mating point 282.

[0199] Antenna 200 may further include a fourth electronic component 274, a fifth electronic component 275, a sixth electronic component 276, and a seventh electronic component 277. The first end of the fourth electronic component 274 and the first end of the fifth electronic component 275 are coupled to a first matching point 281, and the second ends of the fourth electronic component 274 and the fifth electronic component 275 are grounded. The first end of the sixth electronic component 276 and the first end of the seventh electronic component 277 are coupled to a second matching point 282, and the first ends of the sixth electronic component 276 and the second ends of the seventh electronic component 277 are grounded. The first end of the first radiator 210 is grounded through the fourth electronic component 274 and the fifth electronic component 275. The first end of the third radiator 230 is grounded through the sixth electronic component 276 and the seventh electronic component 277.

[0200] It should be understood that the fourth electronic component 274, the fifth electronic component 275, the sixth electronic component 276, and the seventh electronic component 277 can be used to extend the operating bandwidth of the first sub-antenna. In one embodiment, the first sub-antenna can be used to generate a first resonance and a third resonance. The fourth electronic component 274, the fifth electronic component 275, the sixth electronic component 276, and the seventh electronic component 277 can provide two different current paths when the first sub-antenna generates resonance, thereby generating the first resonance and the third resonance. When the first sub-antenna generates the first resonance, the current on the first radiator 210 is electrically connected to the ground plane 201 through the fourth electronic component 274, and the current on the third radiator 230 is electrically connected to the ground plane through the sixth electronic component 276. When the first sub-antenna generates the third resonance, the current on the first radiator 210 is electrically connected to the ground plane 201 through the fifth electronic component 275, and the current on the third radiator 230 is electrically connected to the ground plane through the seventh electronic component 277.

[0201] In one embodiment, at the resonant points of the first and third resonances, the currents on the first radiator 210 and the third radiator 230 are still in opposite directions.

[0202] In one embodiment, the fourth electronic element 274 and the sixth electronic element 276 (or the fifth electronic element 275 and the seventh electronic element 277) can both be capacitors, inductors, or resistors. The capacitance values ​​of the fourth electronic element 274 and the sixth electronic element 276 (or the capacitance values ​​of the fifth electronic element 275 and the seventh electronic element 277) can be substantially the same (the difference in capacitance values ​​is within 15%), or the inductance values ​​of the fourth electronic element 274 and the sixth electronic element 276 (or the inductance values ​​of the fifth electronic element 275 and the seventh electronic element 277) can be substantially the same (the difference in inductance values ​​is within 15%), so that the first sub-antenna has good symmetry and improves its radiation performance.

[0203] In one embodiment, the electrical length of the first radiator 210 is one-quarter of the first wavelength, which is the wavelength corresponding to the first resonance. In one embodiment, the electrical length of the third radiator 230 is one-quarter of the first wavelength. It should be understood that when the first sub-antenna only generates the first resonance, the wavelength corresponding to the first resonance can be understood as the wavelength corresponding to the frequency of the resonant point of the first resonance, or the wavelength corresponding to the center frequency of the resonant frequency band of the first resonance. When the first sub-antenna generates both the first and third resonances, the wavelength corresponding to the first resonance can be understood as the wavelength corresponding to the center frequency between the resonant points of the first and third resonances.

[0204] In one embodiment, the length of the first metal connector 251 between the first matching point 281 and the first end of the first metal connector 251 is less than half the length L1 of the border 11 between the first position 101 and the second position 102. The length of the first metal connector 251 between the second matching point 282 and the second end of the first metal connector 251 is less than half the length L3 of the border 11 between the third position 103 and the fourth position 104. The length of the first metal connector 251 between the first matching point 281 and the first end of the first metal connector 251 can be understood as the length of the first metal connector 251 between the ends of the first metal connector 251 and the first end of the first metal connector 251, and the length of the first metal connector 251 between the second matching point 282 and the second end of the first metal connector 251 can also be understood accordingly.

[0205] It should be understood that the first radiator 210 and the third radiator 230 can form the structure of the IFA.

[0206] In one embodiment, the antenna 200 may further include a first switch and a second switch. The first switch may be connected in series with the ground path of the fourth electronic component 274, and the second switch may be connected in series with the ground path of the sixth electronic component 276. The first and second switches may be used to switch the resonant frequency of the first sub-antenna.

[0207] In one embodiment, antenna 200 may further include a third switch. The third switch may be connected in series in the ground path of the first feed point 261. The third switch may be used to switch electronic components electrically connected to the first feed point 261, thereby switching the resonant frequency of the first sub-antenna or the second sub-antenna.

[0208] It should be understood that the above example only uses the resonant frequencies of two different switching sub-antennas as an example. In practical applications, switches can also be added at other locations to achieve the purpose of switching resonant frequencies, for example, between the open end of the radiator and the floor. This application does not limit this.

[0209] Figure 4 and Figure 5 yes Figure 2 The simulation results of antenna 200 in the electronic device 10 shown are presented. Among them, Figure 4 yes Figure 2 The simulation results of the S-parameters of antenna 200 are shown in the figure. Figure 5 yes Figure 2 Simulation results of the radiation efficiency and system efficiency of the antenna 200 shown.

[0210] It should be understood that, for the sake of brevity, the embodiments in this application are only illustrated with L1=L3=13mm, L2=60mm, the width of the first and second gaps being 2mm, the capacitance of the first and second electronic components being 6.8pF, the resistance of the third electronic component being 0ohm, the resistance of the fourth and sixth electronic components being 0ohm, and the capacitance of the fifth and seventh electronic components being 2.2pF. Adjustments may be made in actual production or design.

[0211] like Figure 4 As shown, the antenna can resonate around 0.9 GHz, 1.7 GHz and 2.4 GHz.

[0212] The resonance generated near 0.9 GHz corresponds to the second resonance generated by the second radiator. The resonance generated near 1.7 GHz corresponds to the first resonance generated by the first and third radiators through the fourth and sixth electronic components. The resonance generated near 2.4 GHz corresponds to the third resonance generated through the fifth and seventh electronic components.

[0213] like Figure 5 As shown, with S11 < -5dB as the boundary, the antenna exhibits good radiation efficiency and system efficiency in the resonant frequency bands of the first resonance, the second resonance, and the third resonance.

[0214] Figures 6 to 9 yes Figure 2 The simulation results of the hotspot of the antenna 200 in the electronic device 10 shown are presented. Among them, Figure 6 yes Figure 2 The simulation results of the antenna 200 at 1.72 GHz on the side of the electronic device are shown. Figure 7 yes Figure 2 The simulation results of the antenna 200 at 2.44 GHz on the side of the electronic device are shown. Figure 8 yes Figure 2 The simulation results of the antenna 200 at 1.72 GHz on the back of the electronic device are shown. Figure 9 yes Figure 2 The simulation results of the antenna 200 at 2.44 GHz on the back of the electronic device are shown.

[0215] It should be understood that in the multiple hotspot simulation results provided in the embodiments of this application, the gray part is a part of the structure of the electronic device, used to present the antenna structure in the embodiments of this application, but not used to limit the area or position where the antenna structure is set in the electronic device; the black plane is a plane 5mm away from the electronic device, to present the distribution of hotspot areas related to the electric field generated in this area when the antenna in the embodiments of this application is working.

[0216] Hot spots on the sides of electronic devices are mainly generated by currents on the frame. When the first and third radiators resonate together, due to the large distance between them and the opposite direction of the currents in the first and third radiators, the hot spots generated by the currents in the first and third radiators are relatively dispersed, giving the antenna a low-hot-spot (low-intensity) characteristic. Figure 6 and Figure 7 As shown.

[0217] The hot spots on the back of the electronic device are mainly generated by the current on the ground plane. When the first and third radiators resonate together, due to the large distance between them, the current density on the ground plane is low. At a distance of 5mm from the back cover, the hot spots are relatively evenly distributed (multiple hot spots are possible), giving the antenna a low-hot-spot (low-intensity) characteristic. Figure 8 and Figure 9 As shown.

[0218] Figure 10 This is a schematic diagram of an electronic device 10 provided in an embodiment of this application.

[0219] like Figure 10 As shown, the length of the frame 11 between the grounding point of the first end of the first radiator 210 and the first connection point 211 is greater than half the length L1 of the first frame. The length of the frame 11 between the grounding point of the first end of the third radiator 230 and the second connection point 212 is greater than half the length L3 of the third frame.

[0220] It should be understood that the first radiator 210 and the third radiator 230 can form a left-handed antenna structure, which can be, for example, an antenna conforming to a composite right and left hand (CRLH) transmission line structure.

[0221] Figure 10 The antenna 200 shown is Figure 2 The only difference between the antennas 200 shown is that the first radiator 210 and the third radiator 230 can form different antenna structures. Figure 2In the antenna 200 shown, the first radiator 210 and the third radiator 230 can form an IFA structure. Figure 10 In the antenna 200 shown, the first radiator 210 and the third radiator 230 can form a CRLH structure. Figure 10 In the antenna 200 shown, the antenna structure formed by the first radiator 210 and the antenna structure formed by the third radiator 230 are basically symmetrical.

[0222] Figures 11 to 14 yes Figure 10 The simulation results of the hotspot of the antenna 200 in the electronic device 10 shown are presented. Among them, Figure 11 yes Figure 10 The simulation results of the antenna 200 at 1.84 GHz on the side of the electronic device are shown. Figure 12 yes Figure 10 The simulation results of the antenna 200 at 2.5 GHz on the side of the electronic device are shown. Figure 13 yes Figure 10 The simulation results of the antenna 200 at 1.84 GHz on the back of the electronic device are shown. Figure 14 yes Figure 10 The simulation results of the antenna 200 at 2.5 GHz on the back of the electronic device are shown.

[0223] like Figure 11 and Figure 12 As shown, when the first radiator and the third radiator resonate together, there are two hot spots at the resonance point of the first resonance (1.84GHz) and the resonance point of the third resonance (2.5GHz), 5mm away from the frame on the side of the electronic device. This disperses the intensity of the hot spots generated by the antenna, giving the antenna a low hot spot (low hot spot intensity) characteristic.

[0224] like Figure 13 As shown, when the first radiator and the third radiator resonate together, at the resonance point of the first resonance (1.84GHz), 5mm away from the back cover on the back of the electronic device, the hot spots are distributed relatively evenly, and individual hot spots are dispersed, giving the antenna a low hot spot (low hot spot intensity) characteristic.

[0225] like Figure 14 As shown, when the first radiator and the third radiator resonate together, at the resonant point of the third resonance (2.5GHz), there are two hot spots on the back of the electronic device, 5mm away from the back cover. This disperses the hot spots generated by the antenna, giving the antenna a low hot spot (low hot spot intensity) characteristic.

[0226] Figure 15 This is a schematic diagram of an electronic device 10 provided in an embodiment of this application.

[0227] like Figure 15As shown, the electronic device 10 includes a conductive frame 11 and an antenna 200.

[0228] The border 11 includes a first position 101, a second position 102, a third position 103, and a fourth position 104 arranged sequentially. The second position 102 is located between the first position 101 and the third position 103, and the third position 103 is located between the second position 102 and the fourth position 104. The border 11 has a first gap at the second position 102 and a second gap at the third position 103.

[0229] Antenna 200 includes a first radiator 210, a second radiator 220, and a third radiator 230. The first end of the first radiator 210 is opposite to the first end of the second radiator 220 but does not contact it. The first end of the third radiator 230 is opposite to the second end of the second radiator 220 but does not contact it. The first ends of the first radiator 210 and the first ends of the third radiator 230 are grounded terminals and are open terminals. The first and second ends of the second radiator 220 are also open terminals.

[0230] The antenna 200 also includes a first feeding circuit 241, a first metal connector 251, and a second metal connector 252.

[0231] The second radiator 220 includes a ground point 221, a first feed point 261, a first connection point 211, and a second connection point 212. The ground point 221 and the first feed point 261 are located between the first connection point 211 and the second connection point 212. The second radiator 220 is grounded at the ground point 221. The first feed circuit 241 is coupled to the first feed point 261.

[0232] The first radiator 210 includes a third connection point 213, the first end of the first metal connector 251 is coupled to the first connection point 211, and the second end of the first metal connector 251 is coupled to the third connection point 213.

[0233] It should be understood that the grounding point of the third connection point 213 and the grounding point of the first end of the first radiator 210 may be the same or different. In one embodiment, the third connection point 213 and the grounding point of the first end of the first radiator 210 may be the same location on the first radiator. In this case, an electronic component, such as an inductor, may be electrically connected between the grounding point of the first end of the first radiator 210 and the ground 201, so that the first metal connector 251 is directly electrically connected to the ground 201. In this case, the first radiator 210 may also be considered as an IFA structure. Similarly, the fourth connection point 214 described below and the grounding point of the first end of the third radiator 230 can be understood accordingly. Similarly, the first / second / ... / Nth connection points on the radiator in this application may be the same or different points, and this application does not limit this.

[0234] The third radiator 230 includes a fourth connection point 214, the first end of the second metal connector 252 is coupled to the second connection point 212, and the second end of the second metal connector 252 is coupled to the fourth connection point 214.

[0235] The first radiator 210 is the first border between the first position 101 and the second position 102. The second radiator 220 is the second border between the second position 102 and the third position 103. The third radiator 230 is the third border between the third position 103 and the fourth position 104.

[0236] The lengths L1 of the border 11 (first border) between the first position 101 and the second position 102, L2 of the border (second border) between the second position 102 and the third position 103, and L3 of the border (third border) between the third position 103 and the fourth position 104 satisfy: L1 < L2, L3 < L2, and L3 × 90% ≤ L1 ≤ L3 × 110%.

[0237] It should be understood that Figure 15 The antenna 200 shown is Figure 2 The difference between the antennas 200 shown lies in the way the first radiator 210 and the third radiator 230 are fed with electrical signals, and the antenna structure formed by the second radiator. Specifically, in... Figure 2 In the antenna 200 shown, an electrical signal is fed into the first radiator 210 and the third radiator 230 via a first metal connector 251, so that the first radiator 210 and the third radiator 230 resonate together. Figure 15 In the antenna 200 shown, the second radiator 220 is used as a transmission line to feed electrical signals to the first radiator 210 and the third radiator 230. Furthermore, in Figure 15 In the antenna 200 shown, the second radiator 220 forms a T-shaped antenna structure.

[0238] For the sake of brevity, Figure 15 The antenna 200 shown is Figure 2 Similar parts of the antenna 200 shown will not be described in detail. For example, the lengths of the first radiator 210, the second radiator 220, and the third radiator 230, and the proportional relationship between their lengths (e.g., the length L1 of the first frame and the length L3 of the third frame satisfy: L3×95%≤L1≤L3×105%); the first radiator 210 and the third radiator 230 are used to generate the first resonance, and the second radiator 220 is used to generate the second resonance. The frequency difference between the first resonance and the second resonance can be... Figure 2 The same applies to antenna 200 shown; the relationship between the operating frequency bands of the first sub-antenna formed by the first radiator 210 and the third radiator 230 and the second sub-antenna formed by the second radiator 220, etc. For example, when the first end of the second radiator 220 is a grounded end and the second end is an open end, the lengths L1 of the first frame, L2 of the second frame, and L3 of the third frame satisfy: L1×1.5≤L2≤L1×4.5, and / or, L3×1.5≤L2≤L3×4.5. In one embodiment, the ratio of the frequency of the first resonant to the frequency of the second resonant is greater than or equal to 1.5 and less than or equal to 4.5.

[0239] exist Figure 15 In the antenna 200 shown, the antenna structure formed by the first radiator 210 and the antenna structure formed by the third radiator 230 are basically symmetrical.

[0240] Simultaneously, the first metal connector 251 and the second metal connector 252 can better excite the first radiator 210 and the third radiator 230, achieving impedance matching between them and providing two different current paths, thereby generating two resonances to extend the antenna's operating bandwidth. In one embodiment, the two current paths can be respectively via the metal connectors and the grounding points of the radiators, thus generating two resonances. At the resonance points of these two resonances, the currents on the first radiator 210 and the third radiator 230 remain in opposite directions.

[0241] Furthermore, the first metal connector 251 and the second metal connector 252 can also increase the radiating aperture of the second radiator 220. With the same radiating aperture, the size of the second radiator 220 can be reduced to achieve miniaturization of the antenna 200.

[0242] In one embodiment, the antenna 200 further includes a first electronic component 271 and a second electronic component 272. The first electronic component 271 is coupled between a first end of the first metal connector 251 and a first connection point 211. The second electronic component 272 is coupled between a first end of the second metal connector 252 and a second connection point 212.

[0243] It should be understood that the first electronic component 271 and the second electronic component 272 can be used to adjust the impedance matching of the first radiator 210 and the third radiator 230, thereby expanding the operating bandwidth of the antenna 200. Simultaneously, the first electronic component 271 and the second electronic component 272 can also be used to change the loading characteristics of the second radiator 220, thereby achieving miniaturization of the antenna 200.

[0244] In one embodiment, both the first electronic component 271 and the second electronic component 272 can be capacitors. The capacitance values ​​of the first electronic component 271 and the second electronic component 272 can be approximately the same (with a difference in capacitance values ​​within 15%), so that the antenna 200 has good symmetry and improves its radiation performance.

[0245] In one embodiment, the grounding point 221 can be located in the central region of the second radiator 220, enabling the second radiator 220 to form a symmetrical T-shaped antenna structure. The central region of the second radiator 220 can be understood as the area within 5 mm of the center of the second radiator 220, with the second radiators 220 on both sides of the center having the same length. In another embodiment, the central region can be understood as the area within 2 mm of the center of the second radiator 220.

[0246] In one embodiment, the second radiator 220 further includes a second feed point 262. A ground point 221 is located between the first feed point 261 and the second feed point 262. The antenna 200 may also include a third metal connector 253, which includes the third feed point 263. A first end of the third metal connector 253 is coupled to the first feed point 261, and a second end of the third metal connector 253 is coupled to the second feed point. A first feed circuit 241 is coupled to the third feed point 263.

[0247] It should be understood that the first power supply circuit 241 can feed electrical signals into the first power supply point 261 and the second power supply point 262 in a symmetrical power supply manner, so that the current on the second radiator 220 is reversed on both sides of the ground point 221. In the plane (e.g., yoz plane) where the frame 11 is located, the reversed currents cancel each other out, reducing the hot spots generated on the side of the electronic device 10.

[0248] In one embodiment, the third power supply point 263 is located in the central region of the third metal connector 253. The central region of the third metal connector 253 can be understood as the area within 5 mm of the center of the third metal connector 253, with the lengths of the third metal connector 253 on both sides of the center being the same. In another embodiment, the central region can be understood as the area within 2 mm of the center of the third metal connector 253.

[0249] It should be understood that when the third feed point 263 is located in the central region of the third metal connector 253, the phase of the electrical signal fed into the first feed point 261 is the same as the phase of the electrical signal fed into the second feed point 262, which can better cancel the reverse current on the second radiator 220, thereby reducing the hot spots generated on the side of the electronic device 10.

[0250] In one embodiment, the distance between grounding point 221 and first feed point 261 is the same as the distance between grounding point 221 and second feed point 262, and the first feed point 261 and second feed point 262 are symmetrical about grounding point 221.

[0251] It should be understood that with the increase in structural symmetry, antenna 200 can have better radiation performance.

[0252] In one embodiment, the length D1 of the first metal connector 251 and the length L1 of the border 11 between the first position 101 and the second position 102 satisfy: L1×25%≤D1≤L1. In another embodiment, the length D2 of the second metal connector 252 and the length L3 of the border between the third position 103 and the fourth position 104 satisfy: L3×20%≤D2≤L3.

[0253] In one embodiment, the length D1 of the first metal connector 251 and the length L1 of the border 11 between the first position 101 and the second position 102 satisfy: D1 ≤ L1 × 66% (one-third of L1). In one embodiment, the length D2 of the second metal connector 252 and the length L3 of the border between the third position 103 and the fourth position 104 satisfy: D2 ≤ L3 × 66% (one-third of L3).

[0254] In one embodiment, the length D3 of the third metal connector 253 and the length L2 of the border between the second position 102 and the third position 103 satisfy: L2×6% (one-fifteenth of L2)≤D3≤L2×25%.

[0255] In one embodiment, the length D3 of the third metal connector 253 and the length L2 of the border between the second position 102 and the third position 103 satisfy: L2×10%≤D3≤L2×20%.

[0256] It should be understood that, Figure 15 In the antenna 200 shown, the metal connector is relatively short, which helps to miniaturize the antenna 200 and makes it more suitable for the increasingly limited internal space of electronic devices.

[0257] Figure 16 This is a schematic diagram of an electronic device 10 provided in an embodiment of this application.

[0258] like Figure 16 As shown, the electronic device 10 includes an antenna 300.

[0259] It should be understood that antenna 300 and Figure 15 The only difference of the antenna 200 shown is that it does not include the first metal connector and the second metal connector.

[0260] exist Figure 15 In the antenna 200 shown, the antenna structure formed by the first radiator 210 and the antenna structure formed by the third radiator 230 are basically symmetrical.

[0261] Figure 17 and Figure 18 yes Figure 15 and Figure 16 The simulation results of the antenna in the electronic device 10 shown are presented. Among them, Figure 17 yes Figure 15 and Figure 16 The simulation results of the S-parameters of the antenna shown are displayed. Figure 18 yes Figure 15 The simulation results show the radiation efficiency of the antenna and the system efficiency.

[0262] It should be understood that, for the sake of brevity, the embodiments in this application are only illustrated with L1=L3=14.5mm, L2=60mm, and the capacitance value of the first electronic component and the second electronic component being 0.5pF. Adjustments may be made in actual production or design.

[0263] like Figure 17 As shown, antenna 200 can resonate around 0.9 GHz, 1.8 GHz, 2.25 GHz, 2.7 GHz, 3.16 GHz, and 4.39 GHz.

[0264] Because the first and second metal connectors can better excite the first and third radiators, achieving impedance matching between them, more operating modes can be excited. Therefore, in the 1.5 GHz to 4 GHz frequency band, antenna 200 can generate multiple resonances, and the operating bandwidth of antenna 200 is much larger than that of antenna 300. Figure 17 As shown.

[0265] Furthermore, the first and second metal connectors can also increase the radiating aperture of the second radiator. Therefore, with the same size second radiator, the resonant frequency of antenna 200 in the low-frequency band is around 0.9 GHz, and the resonant frequency of antenna 300 in the low-frequency band is around 1.1 GHz. Figure 17 As shown. With the same resonant frequency in the low-frequency band, the size of antenna 200 is smaller than that of antenna 300.

[0266] like Figure 18 As shown, antenna 200 exhibits good radiation efficiency and system efficiency in the resonant frequency band.

[0267] Figures 19 to 24 yes Figure 15 A schematic diagram of the current distribution in the antenna 200 of the electronic device 10 shown. Wherein, Figure 19 yes Figure 15 The diagram shows the current distribution of antenna 200 at 0.9 GHz. Figure 20 yes Figure 15 The diagram shows the current distribution of antenna 200 at 1.8 GHz.

[0268] Figure 21 yes Figure 15 The diagram shows the current distribution of antenna 200 at 2.25 GHz. Figure 22 yes Figure 15 The diagram shows the current distribution of antenna 200 at 2.7 GHz. Figure 23 yes Figure 15 The diagram shows the current distribution of antenna 200 at 3.16 GHz. Figure 24 yes Figure 15 The diagram shows the current distribution of antenna 200 at 4.39 GHz.

[0269] like Figures 19 to 24 The schematic diagram of the current distribution shows that the current on the second radiator is reversed on both sides of the grounding point, and the current on the first radiator is reversed with the current on the third radiator. Therefore, within the plane containing the frame (e.g., the yoz plane), the reversed currents cancel each other out, reducing hot spots generated on the sides of the electronic device.

[0270] like Figure 19 and Figure 24 As shown, the resonances generated near 0.9 GHz and 4.39 GHz are mainly produced by the second radiator. Specifically, the resonance near 0.9 GHz is generated by the entire second radiator. The resonance near 4.39 GHz is generated by the second radiator between the first feed point and the second position, and by the second radiator between the second feed point and the third position.

[0271] like Figure 20 As shown, resonance is generated near 1.8 GHz. The second radiator serves as a transmission line, feeding electrical signals into the first and third radiators, thereby causing the first and third radiators to resonate.

[0272] like Figure 21 and Figure 23As shown, resonance is generated jointly by the first radiator, the second radiator, and the third radiator. It should be understood that since the second radiator also generates radiation, it does not act as a transmission line but as a radiator in this case, thus greatly reducing its loss and effectively improving the antenna's efficiency.

[0273] like Figure 22 As shown, the current on both sides of the grounding point exhibits a three-quarter wavelength distribution pattern. Therefore, the first radiator, the second radiator, and the third radiator can work together in a three-half wavelength mode to generate resonance.

[0274] Figures 25 to 30 yes Figure 15 The simulation results of the hotspot of the antenna 200 in the electronic device 10 shown are presented. Among them, Figure 25 yes Figure 15 The simulation results of the antenna 200 on the side of the electronic device at 1.8 GHz are shown. Figure 26 yes Figure 15 The simulation results of the antenna 200 at 2.25 GHz on the side of the electronic device are shown. Figure 27 yes Figure 15 The simulation results of the antenna 200 at 2.7 GHz on the side of the electronic device are shown. Figure 28 yes Figure 15 The simulation results of the antenna 200 at 1.8 GHz on the back of the electronic device are shown. Figure 29 yes Figure 15 The simulation results of the antenna 200 at 2.25 GHz on the back of the electronic device are shown. Figure 30 yes Figure 15 The simulation results of the antenna 200 at 2.7 GHz on the back of the electronic device are shown.

[0275] like Figure 25 , Figure 26 and Figure 27 As shown, when the antenna resonates, at the resonant points (1.8GHz, 2.25GHz and 2.7GHz), there are at least two hot spots in the area 5mm away from the frame on the side of the electronic device. This disperses the hot spots generated by the antenna, giving the antenna a low hot spot (low hot spot intensity) characteristic.

[0276] like Figure 28 As shown, when the antenna resonates, at the resonant point (1.8GHz), the hot spots are distributed relatively evenly in the area 5mm away from the back cover on the back of the electronic device. The intensity of individual hot spots is dispersed, giving the antenna a low hot spot (low hot spot intensity) characteristic.

[0277] like Figure 29 and Figure 30As shown, when the antenna resonates, there are two hot spots in the area 5mm away from the back cover on the back of the electronic device at the resonant points (2.25GHz and 2.7GHz). These hot spots disperse the hot spots generated by the antenna, giving the antenna a low hot spot (low hot spot intensity) characteristic.

[0278] Figure 31 This is a schematic diagram of an electronic device 10 provided in an embodiment of this application.

[0279] like Figure 31 As shown, the first connection point 211 is located between the grounding point 221 and the second position 102. The length L6 of the border between the grounding point 221 and the second position 102, the length L1 of the first border, and the length L2 of the second border satisfy: L1×33%≤L6≤L2×33%.

[0280] Figure 31 The antenna 200 shown is Figure 15 The only difference between the antennas 200 shown is that the second radiator 220 can form a different antenna structure. Figure 15 In the antenna 200 shown, the second radiator 220 can form a symmetrical T-shaped antenna structure. Figure 31 In the antenna 200 shown, the second radiator 220 can form an asymmetrical T-shaped antenna structure, and there is no need to set a third metal connector, making its feeding structure simpler.

[0281] For the sake of brevity, Figure 31 The antenna 200 shown is Figure 2 Similar parts of the antenna 200 shown will not be described in detail. For example, the lengths of the first radiator 210, the second radiator 220, and the third radiator 230, and the proportional relationship between their lengths (e.g., the length L1 of the first frame and the length L3 of the third frame satisfy: L3×95%≤L1≤L3×105%); the first radiator 210 and the third radiator 230 are used to generate the first resonance, and the second radiator 220 is used to generate the second resonance. The frequency difference between the first resonance and the second resonance can be... Figure 2 The same applies to antenna 200 shown; the relationship between the operating frequency bands of the first sub-antenna formed by the first radiator 210 and the third radiator 230 and the second sub-antenna formed by the second radiator 220, etc. For example, when the first end of the second radiator 220 is a grounded end and the second end is an open end, the lengths L1 of the first frame, L2 of the second frame, and L3 of the third frame satisfy: L1×1.5≤L2≤L1×4.5, and / or, L3×1.5≤L2≤L3×4.5. In one embodiment, the ratio of the frequency of the first resonant to the frequency of the second resonant is greater than or equal to 1.5 and less than or equal to 4.5.

[0282] exist Figure 31 In the antenna 200 shown, the antenna structure formed by the first radiator 210 and the antenna structure formed by the third radiator 230 are basically symmetrical.

[0283] It should be understood that at the second position 102, the first end of the first radiator 210 is a grounded end belonging to the current region (this region includes points with large current), while the first end of the second radiator 220 is an open end belonging to the electric field region (this region includes points with large electric field). When the grounding point 221 is close to the second position 102, the electric field at the first end of the second radiator 220 weakens, causing the first metal connector 251 to have a reduced ability to transmit electrical signals, and thus weakening the radiation characteristics of the antenna 200. Therefore, a certain distance needs to be maintained between the grounding point 221 and the second position 102 to ensure that the antenna 200 has good radiation characteristics. The first feed point 261 can be located at any position of the second radiator 220, and this embodiment of the application does not impose any restrictions on this.

[0284] In one embodiment, the length L6 of the frame between the grounding point 221 and the second position 102 satisfies the condition L1 of the first frame: L1×50%≤L6, so that the antenna 200 has better radiation characteristics.

[0285] Figure 32 and Figure 33 yes Figure 31 The simulation results of the antenna in the electronic device 10 shown are presented. Among them, Figure 32 yes Figure 31 The simulation results of the S-parameters of the antenna shown are displayed. Figure 33 yes Figure 31 The simulation results show the radiation efficiency of the antenna and the system efficiency.

[0286] like Figure 32 As shown, antenna 200 can resonate around 0.9 GHz, 1.8 GHz, 2.5 GHz and 2.75 GHz, and antenna 200 has a good operating bandwidth.

[0287] like Figure 33 As shown, antenna 200 exhibits good radiation efficiency and system efficiency in the resonant frequency band.

[0288] Figures 34 to 37 yes Figure 31 The simulation results of the hotspot of the antenna 200 in the electronic device 10 shown are presented. Among them, Figure 34 yes Figure 31 The simulation results of the antenna 200 at 1.77 GHz on the side of the electronic device are shown. Figure 35 yes Figure 31 The simulation results of the antenna 200 at 2.5 GHz on the side of the electronic device are shown. Figure 36 yes Figure 31The simulation results of the antenna 200 at 1.77 GHz on the back of the electronic device are shown. Figure 37 yes Figure 31 The simulation results of the antenna 200 at 2.5 GHz on the back of the electronic device are shown.

[0289] like Figure 34 and Figure 35 As shown, when the antenna resonates, there are two hot spots at the resonant points (1.77GHz and 2.5GHz) in the area 5mm away from the frame on the side of the electronic device. This disperses the hot spots generated by the antenna, giving the antenna a low hot spot (low hot spot intensity) characteristic.

[0290] like Figure 36 and Figure 37 As shown, when the antenna resonates, at the resonant points (1.77GHz and 2.5GHz), the hot spots are more evenly distributed in the area 5mm away from the back cover on the back of the electronic device. The intensity of a single hot spot is dispersed, giving the antenna a low hot spot (low hot spot intensity) characteristic.

[0291] It should be understood that, due to Figure 31 The antenna 200 shown is compared to Figure 14 The antenna 200 shown has low symmetry (the grounding point is not located in the central region of the second radiator), therefore, the intensity of the hot spot generated by the antenna is increased.

[0292] Figure 38 This is a schematic diagram of an electronic device 10 provided in an embodiment of this application.

[0293] like Figure 38 As shown, the electronic device 10 includes a conductive frame 11 and an antenna 200.

[0294] The border 11 includes a first position 101, a second position 102, a third position 103, and a fourth position 104. The second position 102 is located between the first position 101 and the third position 103, and the third position 103 is located between the second position 102 and the fourth position 104. The border 11 has a first gap at the second position 102 and a second gap at the third position 103.

[0295] Antenna 200 includes a first radiator 210, a second radiator 220, and a third radiator 230. The first end of the first radiator 210 is opposite to the first end of the second radiator 220 but does not contact it. The first end of the third radiator 230 is opposite to the second end of the second radiator 220 but does not contact it. The first ends of the first radiator 210 and the first ends of the third radiator 230 are open ends and are grounded ends. The first and second ends of the second radiator 220 are also open ends.

[0296] The antenna 200 also includes a first feeding circuit 241 and a third metal connector 252.

[0297] The second radiator 220 includes a ground point 221, a first feed point 261, and a second feed point 262. The ground point 221 is located between the first feed point 261 and the second feed point 262. The second radiator 220 is grounded at the ground point 221. The third metal connector includes a third feed point 263. A first end of the third metal connector 253 is coupled to the first feed point 261, and a second end of the third metal connector 253 is coupled to the second feed point. The first feed circuit 241 is coupled to the third feed point 263.

[0298] The first radiator 210 is the first border between the first position 101 and the second position 102. The second radiator 220 is the second border between the second position 102 and the third position 103. The third radiator 230 is the third border between the third position 103 and the fourth position 104.

[0299] The lengths L1 of the border 11 (first border) between the first position 101 and the second position 102, L2 of the border (second border) between the second position 102 and the third position 103, and L3 of the border (third border) between the third position 103 and the fourth position 104 satisfy: L1 < L2, L3 < L2, and L3 × 90% ≤ L1 ≤ L3 × 110%.

[0300] It should be understood that, Figure 38 In the antenna 200 shown, the first end of the first radiator 210 and the first end of the third radiator 230 are open ends, and electrical signals can be fed into the first radiator 210 and the third radiator 230 by means of indirect coupling.

[0301] For the sake of brevity, Figure 38 The antenna 200 shown is Figure 2 Similar parts of the antenna 200 shown will not be described in detail. For example, the lengths of the first radiator 210, the second radiator 220, and the third radiator 230, and the proportional relationship between their lengths (e.g., the length L1 of the first frame and the length L3 of the third frame satisfy: L3×95%≤L1≤L3×105%); the relationship between the first radiator 210 and the third radiator 230 used to generate the first resonance, and the second radiator 220 used to generate the second resonance, wherein the frequency difference relationship between the first resonance and the second resonance can be... Figure 2The same applies to antenna 200 shown; the relationship between the operating frequency bands of the first sub-antenna formed by the first radiator 210 and the third radiator 230 and the second sub-antenna formed by the second radiator 220, etc. For example, when the first end of the second radiator 220 is a grounded end and the second end is an open end, the lengths L1 of the first frame, L2 of the second frame, and L3 of the third frame satisfy: L1×1.5≤L2≤L1×4.5, and / or, L3×1.5≤L2≤L3×4.5. In one embodiment, the ratio of the frequency of the first resonant to the frequency of the second resonant is greater than or equal to 1.5 and less than or equal to 4.5.

[0302] exist Figure 38 In the antenna 200 shown, the antenna structure formed by the first radiator 210 and the antenna structure formed by the third radiator 230 are basically symmetrical.

[0303] In one embodiment, the antenna 200 further includes a first electronic component 271 and a second electronic component 272. A first end of the first electronic component 271 is coupled to a first feed circuit 241, and a second end of the first electronic component 271 is coupled to a third feed point 263. A first end of the second electronic component 272 is coupled between the first feed circuit 241 and the first end of the first electronic component 271, and a second end of the second electronic component 272 is grounded.

[0304] It should be understood that the first electronic component 271 and the second electronic component 272 can be used to adjust the coupling amount between the first radiator 210 and the second radiator 220 at the second position 102, and the coupling amount between the third radiator 230 and the second radiator 220 at the third position 103, thereby determining the frequency of the resonance generated by the antenna 200.

[0305] In one embodiment, the above embodiments are described using the structure of the first radiator 210 and the third radiator 230 as an example, with one end being an open end and the other end being a grounded end. In actual production or design, the first radiator 210 and the third radiator 230 can also be a structure with both ends being open. For example, the first radiator 210 and the third radiator 230 can be a T-shaped structure.

[0306] Figure 39 and Figure 40 yes Figure 38 The simulation results of the antenna in the electronic device 10 shown are presented. Among them, Figure 39 yes Figure 38 The simulation results of the S-parameters of the antenna shown are displayed. Figure 40 yes Figure 38 The simulation results show the radiation efficiency of the antenna and the system efficiency.

[0307] It should be understood that, for the sake of brevity, the embodiments in this application are only illustrated with the example of the capacitance value of the first electronic component being 2pF and the capacitance value of the second electronic component being 0.8pF, and adjustments may be made in actual production or design.

[0308] like Figure 39 As shown, antenna 200 can resonate around 0.95GHz, 1.9GHz, 2.51GHz and 4.43GHz, and antenna 200 has a wide operating bandwidth.

[0309] like Figure 40 As shown, antenna 200 exhibits good radiation efficiency and system efficiency in the resonant frequency band.

[0310] Figures 41 to 44 yes Figure 38 A schematic diagram of the current distribution in the antenna 200 of the electronic device 10 shown. Wherein, Figure 41 yes Figure 38 The diagram shows the current distribution of antenna 200 at 0.95 GHz. Figure 42 yes Figure 38 The diagram shows the current distribution of antenna 200 at 1.9 GHz. Figure 43 yes Figure 38 The diagram shows the current distribution of antenna 200 at 2.51 GHz. Figure 44 yes Figure 38 The diagram shows the current distribution of antenna 200 at 4.43 GHz.

[0311] like Figures 41 to 44 The schematic diagram of the current distribution shows that the current on the second radiator is reversed on both sides of the grounding point, and the current on the first radiator is reversed with the current on the third radiator. Therefore, within the plane containing the frame (e.g., the yoz plane), the reversed currents cancel each other out, reducing hot spots generated on the sides of the electronic device.

[0312] like Figure 41 As shown, the resonance generated near 0.9G 5Hz is mainly produced by the second radiator and can correspond to the half-wavelength mode.

[0313] like Figure 42 As shown, resonance occurs near 1.9 GHz. The second radiator acts as a transmission line, feeding electrical signals into the first and third radiators, thus causing them to resonate. In this case, the second radiator acts as a radiator rather than a transmission line, significantly reducing its loss and effectively improving the antenna's efficiency.

[0314] like Figure 43 and Figure 44As shown, the currents on both sides of the grounding point exhibit distribution patterns of three-quarter wavelength mode and five-quarter wavelength mode. Therefore, the first radiator, the second radiator, and the third radiator can work together in three-half wavelength mode and five-half wavelength mode to generate resonance.

[0315] Figures 45 to 50 yes Figure 38 The simulation results of the hotspot of the antenna 200 in the electronic device 10 shown are presented. Among them, Figure 45 yes Figure 38 The simulation results of the antenna 200 at 1.9 GHz on the side of the electronic device are shown. Figure 46 yes Figure 38 The simulation results of the antenna 200 at 2.51 GHz on the side of the electronic device are shown. Figure 47 yes Figure 38 The simulation results of the antenna 200 at 4.43 GHz on the side of the electronic device are shown. Figure 48 yes Figure 38 The simulation results of the antenna 200 at 1.9 GHz on the back of the electronic device are shown. Figure 49 yes Figure 38 The simulation results of the antenna 200 at 2.51 GHz on the back of the electronic device are shown. Figure 50 yes Figure 38 The simulation results of the antenna 200 at 4.43 GHz on the back of the electronic device are shown.

[0316] like Figure 45 , Figure 46 and Figure 47 As shown, when the antenna resonates, at the resonant points (1.9GHz, 2.51GHz and 4.43GHz), there are at least two hot spots in the area 5mm away from the frame on the side of the electronic device. This disperses the intensity of the hot spots generated by the antenna, giving the antenna a low hot spot (low hot spot intensity) characteristic.

[0317] like Figure 48 , Figure 49 and Figure 50 As shown, when the antenna resonates, at the resonant points (1.9GHz, 2.51GHz and 4.43GHz), there are at least two hot spots in the area 5mm away from the back cover on the back of the electronic device. This disperses the intensity of the hot spots generated by the antenna, giving the antenna a low hot spot (low hot spot intensity) characteristic.

[0318] Figure 51 This is a schematic diagram of an electronic device 10 provided in an embodiment of this application.

[0319] like Figure 51 As shown, the border 11 includes a first side 202 and a second side 203 that intersect at an angle.

[0320] Among them, the first position 101 is located on the first side 202, and the fourth position 104 is located on the second side 203.

[0321] It should be understood that Figure 51 The antenna 200 shown is Figure 38 The difference between the antennas 200 shown lies in the arrangement of the radiators (first radiator 210, second radiator 220, and third radiator 230). Specifically, in... Figure 38 In the antenna 200 shown, the radiator is linear and positioned on the first side of the frame 11. Figure 51 In the antenna 200 shown, the radiator is in the shape of a broken line, with part of it located on the first side of the frame 11 and part of it located on the second side of the frame 11.

[0322] In one embodiment, the second position 102 may be located on the first side 202, and the third position 103 may be located on the second side 203.

[0323] In one embodiment, the second position 102 and the third position 103 may both be located on the second side 203.

[0324] In one embodiment, the ratio of the length of the radiator (first radiator, second radiator and third radiator) along the first direction (the extension direction of the first side 202, for example, the x direction) to the length of the border between the first position 101 and the fourth position 104 is less than or equal to 0.25.

[0325] It should be understood that because the radiator of antenna 200 is a polygonal shape, the radiator can be more flexibly arranged using the frame of the electronic device. Within the aforementioned ratio range, antenna 200 still exhibits good low-hot-point characteristics. However, as the aforementioned ratio increases, although the currents on the first radiator 210 and the third radiator 230 are in opposite directions, they cannot cancel each other out, which will worsen the low-hot-point characteristics of antenna 200. For example, if part of the current on the first radiator 210 propagates along the x-direction and the current on the third radiator 230 propagates along the y-direction, the currents propagating in the two directions cannot cancel each other out and will combine to form a current at a certain angle to either the x-direction or the y-direction, thereby worsening the low-hot-point characteristics of antenna 200.

[0326] 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 illustrative; for instance, the division of units is merely 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 indirect coupling or communication connection between apparatuses or units may be electrical or other forms.

[0327] 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 border includes a first position, a second position, a third position, and a fourth position. The second position is located on the border between the first position and the third position. The third position is located on the border between the second position and the fourth position. The border has a first gap at the second position and a second gap at the third position. The antenna includes a first radiator, a second radiator, a third radiator, a first feed circuit, and a first metal connector. The first metal connector includes a first feed point, and the first feed circuit is coupled to the first feed point. The first radiator includes a first connection point, and the third radiator includes a second connection point. A first end of the first metal connector is coupled to the first connection point, and a second end of the first metal connector is coupled to the second connection point. Wherein, the first radiator is a first border between the first position and the second position, the second radiator is a second border between the second position and the third position, and the third radiator is a third border between the third position and the fourth position; The lengths L1 of the first border, L2 of the second border, and L3 of the third border satisfy: L1 < L2, L3 < L2, and L3 < L2. ≤L1≤L3 110%.

2. The electronic device according to claim 1, characterized in that, The second radiator includes a third connection point, and the third end of the first metal connector is coupled to the third connection point.

3. The electronic device according to claim 1, characterized in that, The antenna includes a second feeding circuit; The second radiator includes a second feed point, and the second feed circuit is coupled to the second feed point.

4. The electronic device according to any one of claims 1 to 3, characterized in that, L1 and L3 satisfy: and L3 95%≤L1≤L3 105%.

5. The electronic device according to any one of claims 1 to 4, characterized in that, The antenna also includes a first electronic component and a second electronic component; The first electronic component is coupled between the first end of the first metal connector and the first connection point, and the second electronic component is coupled between the second end of the first metal connector and the second connection point.

6. The electronic device according to any one of claims 1 to 5, characterized in that, The first end of the first radiator is opposite to the first end of the second radiator and does not contact each other; the first end of the third radiator is opposite to the second end of the second radiator and does not contact each other. The first end of the first radiator and the first end of the third radiator are grounded ends, and the second ends of the first radiator and the second ends of the third radiator are open ends, or... The first end of the first radiator and the first end of the third radiator are open ends, and the second end of the first radiator and the second end of the third radiator are grounded ends.

7. The electronic device according to any one of claims 1 to 6, characterized in that, The first radiator and the third radiator are used to generate the first resonance; The second radiator is used to generate a second resonance, the frequency of which is lower than ... the first resonance.

8. The electronic device according to claim 7, characterized in that, The first end of the second radiator is a grounded end, and the second end of the second radiator is an open end; The L1, L2, and L3 satisfy the following: L1 1.5≤L2≤L1 4.5, and / or, L3 1.5≤L2≤L3 4.5, the ratio of the frequency of the first resonance to the frequency of the second resonance is greater than or equal to 1.5 and less than or equal to 4.

5.

9. An electronic device, characterized in that, include: The border includes a first position, a second position, a third position, and a fourth position. The second position is located on the border between the first position and the third position. The third position is located on the border between the second position and the fourth position. The border has a first gap at the second position and a second gap at the third position. The antenna includes a first radiator, a second radiator, and a third radiator. The first end of the first radiator is opposite to the first end of the second radiator and does not contact each other. The first end of the third radiator is opposite to the second end of the second radiator and does not contact each other. The first end of the first radiator and the first end of the third radiator are grounded ends. The first end and the second end of the second radiator are open ends. The antenna further includes a first feeding circuit, a first metal connector, and a second metal connector. The second radiator includes a ground point, a first feeding point, a first connection point, and a second connection point. The ground point and the first feeding point are located between the first connection point and the second connection point. The second radiator is grounded at the ground point. The first feeding circuit is coupled to the first feeding point. The first radiator includes a third connection point. A first end of the first metal connector is coupled to the first connection point, and a second end of the first metal connector is coupled to the third connection point. The third radiator includes a fourth connection point. A first end of the second metal connector is coupled to the second connection point, and a second end of the second metal connector is coupled to the fourth connection point. The first radiator is a first border between the first position and the second position, the second radiator is a second border between the second position and the third position, and the third radiator is a third border between the third position and the fourth position; The lengths L1 of the first border, L2 of the second border, and L3 of the third border satisfy: L1 < L2, L3 < L2, and L3 < L2. ≤L1≤L3 110%.

10. The electronic device according to claim 9, characterized in that, The grounding point is located in the central region of the second radiator; The second radiator also includes a second feed point, and the grounding point is located between the first feed point and the second feed point; The antenna further includes a third metal connector, which includes a third feed point. A first end of the third metal connector is coupled to the first feed point, and a second end of the third metal connector is coupled to the second feed point. The first feed circuit is coupled to the third feed point.

11. The electronic device according to claim 10, characterized in that, The third power supply point is located in the central region of the third metal connector.

12. The electronic device according to claim 10 or 11, characterized in that, The length D3 of the third metal connector and the length L2 satisfy the following condition: L2 6%≤D3≤L2 25%.

13. The electronic device according to claim 9, characterized in that, The first connection point is located between the grounding point and the second position; The length L4 of the frame between the grounding point and the second position, and L1 and L2 satisfy: L1 33%≤L4≤L2 33%.

14. The electronic device according to any one of claims 9 to 13, characterized in that, The antenna also includes a first electronic component and a second electronic component; The first electronic component is coupled between the first end of the first metal connector and the first connection point, and the second electronic component is coupled between the first end of the second metal connector and the second connection point.

15. The electronic device according to any one of claims 9 to 14, characterized in that, The length D1 of the first metal connector and the L1 satisfy: L1 25%≤D1≤L1, and / or, The length D2 of the second metal connector and the L3 satisfy the following condition: L3 25%≤D2≤L3.

16. An electronic device, characterized in that, include: The border includes a first position, a second position, a third position, and a fourth position. The second position is located on the border between the first position and the third position. The third position is located on the border between the second position and the fourth position. The border has a first gap at the second position and a second gap at the third position. An antenna, comprising a first radiator, a second radiator, and a third radiator, wherein a first end of the first radiator is opposite to and does not contact the first end of the second radiator, and a first end of the third radiator is opposite to and does not contact the second end of the second radiator, wherein the first end of the first radiator and the first end of the third radiator are open ends, and the first end and the second end of the second radiator are open ends; The antenna further includes a first feeding circuit and a first metal connector. The second radiator includes a ground point, a first feeding point, and a second feeding point. The ground point is located between the first feeding point and the second feeding point. The second radiator is grounded at the ground point. The first metal connector includes a third feeding point. A first end of the first metal connector is coupled to the first feeding point, and a second end of the first metal connector is coupled to the second feeding point. The first feeding circuit is coupled to the third feeding point. The first radiator is a first border between the first position and the second position, the second radiator is a second border between the second position and the third position, and the third radiator is a third border between the third position and the fourth position; The lengths L1 of the first border, L2 of the second border, and L3 of the third border satisfy: L1 < L2, L3 < L2, and L3 < L2. ≤L1≤L3 110%.

17. The electronic device according to claim 16, characterized in that, The grounding point is located in the central region of the second radiator.

18. The electronic device according to claim 17, characterized in that, The third power supply point is located in the central region of the first metal connector.

19. The electronic device according to claim 17 or 18, characterized in that, The length D3 of the first metal connector and the length L2 satisfy the following condition: L2 6%≤D3≤L2 25%.

20. The electronic device according to any one of claims 16 to 19, characterized in that, The antenna also includes a first electronic component and a second electronic component; The first end of the first electronic component is coupled to the first power supply circuit, the second end of the first electronic component is coupled to the third power supply point, the first end of the second electronic component is coupled between the first power supply circuit and the first end of the first electronic component, and the second end of the second electronic component is grounded.

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