WO2023246690A1 - Dispositif électronique - Google Patents

Dispositif électronique Download PDF

Info

Publication number
WO2023246690A1
WO2023246690A1 PCT/CN2023/101033 CN2023101033W WO2023246690A1 WO 2023246690 A1 WO2023246690 A1 WO 2023246690A1 CN 2023101033 W CN2023101033 W CN 2023101033W WO 2023246690 A1 WO2023246690 A1 WO 2023246690A1
Authority
WO
WIPO (PCT)
Prior art keywords
frame
resonance
antenna
metal layer
capacitor
Prior art date
Application number
PCT/CN2023/101033
Other languages
English (en)
Chinese (zh)
Inventor
施佑霖
张志华
李建铭
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2023246690A1 publication Critical patent/WO2023246690A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/44—Details of, or arrangements associated with, antennas using equipment having another main function to serve additionally as an antenna, e.g. means for giving an antenna an aesthetic aspect
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/10—Resonant antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/30—Arrangements for providing operation on different wavebands
    • H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
    • H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
    • H01Q5/335—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors at the feed, e.g. for impedance matching

Definitions

  • the present application relates to the field of wireless communications, and in particular, to an electronic device.
  • the multiple-input multiple-output (MIMO) system is a widely adopted core technology.
  • the MIMO system can have both spatial diversity technology and spatial multitasking. (spatial multiplexing), by erecting multiple antennas at the transmitter and receiver ends to provide spatial freedom to improve the spectral efficiency of the communication system, effectively increase the channel capacity, and significantly increase the user's download and upload rates.
  • the fifth generation (fifth generation) generation, 5G) New Radio (NR) MIMO system multi-antenna architecture (2 ⁇ 2) or wireless fidelity (WiFi) 6/7 MIMO system multi-antenna architecture (4 ⁇ 4 or 8 ⁇ 8) will be the trend of future communication applications.
  • Embodiments of the present application provide an electronic device, including an antenna.
  • the antenna uses part of a conductive frame as a radiator, which reduces gaps in the frame and can also generate multiple resonant frequency bands to meet the communication needs of the electronic device.
  • an electronic device including: a floor; a conductive frame, the frame has a first position and a second position, the frame is grounded at the first position, and a gap is provided at the second position , the frame between the first position and the second position is a first frame; the antenna includes the first frame, the first frame includes a first ground point, a first feed point and a second feed point.
  • the antenna further includes a first capacitor, a second capacitor, a first feeding unit and a second feeding unit, the first end of the first capacitor is electrically connected to the first frame at a first feeding point , the second end of the first capacitor is electrically connected to the first feeding unit, the first end of the second capacitor is electrically connected to the first frame at the second feeding point, the second The second end of the capacitor is electrically connected to the second feeding unit; the length L1 of the first frame between the first position and the first ground point and the length L1 of the second position and the first ground point The length L2 of the first border between them satisfies: 1.8 ⁇ L1/L2 ⁇ 2.2.
  • the antenna when the first feeding unit feeds power, the antenna may serve as the first antenna unit.
  • the antenna When fed by the second feeding unit, the antenna may serve as the second antenna unit.
  • the technical solution provided by the embodiment of the present application forms a dual-antenna structure that uses the frame of the electronic device as the radiator of the antenna, and only opens a single slit on the frame. The complexity of the manufacturing process is greatly reduced, and the integrity of the frame is reduced. sexual influence.
  • each antenna unit in the dual-antenna structure can generate dual resonance, allowing it to operate in two different frequency bands at the same time, meeting the communication needs of electronic equipment, and good isolation between the two antenna units can be maintained.
  • the antenna when the first feeding unit feeds power, the antenna generates a first resonance and a second resonance, and the resonant frequency of the first resonance is lower than the first resonance.
  • the antenna when the first feeding unit feeds power, can function as the first antenna unit to generate a first resonance and a second resonance, and the resonant frequency of the first resonance is lower than the resonant frequency of the second resonance.
  • the first resonance is generated by the first frame between the first position and the second position
  • the second resonance is generated by the first frame between the first position and the first feeding point.
  • the antenna has a linear antenna structure and the working mode is three-quarter wavelength mode.
  • the antenna Corresponding to the second resonance, has a closed slot structure and the working mode is a half-wavelength mode.
  • the antenna can be used as the second antenna unit to generate the third resonance and the fourth resonance.
  • the resonance frequency band of the first resonance and the resonance frequency band of the third resonance are the same frequency
  • the resonance frequency band of the second resonance is the same as the resonance frequency band of the second resonance.
  • the resonant frequency band of the fourth resonance is the same frequency. Therefore, the antenna can be used in MIMO systems.
  • the third resonance is generated by the first frame between the ground point and the second position
  • the fourth resonance is generated by the first frame between the second feeding point and the second position.
  • the antenna is an inverted F antenna structure
  • the working mode is a quarter-wavelength mode.
  • the antenna has a slotted hole structure and the working mode is a quarter-wavelength mode.
  • the frequency ratio of the resonant frequency f1 of the first resonance and the resonant frequency f2 of the second resonance satisfies: 1.1 ⁇ f2/f1 ⁇ 1.5.
  • the antenna has good performance at both high frequency (the resonant frequency band of the second resonance and the resonant frequency band of the fourth resonance) and low frequency (the resonant frequency band of the first resonance and the third resonance). Radiation characteristics, the frequency difference between low frequency and high frequency should be kept within a reasonable range.
  • the capacitance value C1 of the first capacitor satisfies: 0.3pF ⁇ C1 ⁇ 1pF; and/or the capacitance value C2 of the second capacitor satisfies: 0.3 pF ⁇ C2 ⁇ 1pF.
  • this application only takes the 3300MHz-3800MHz frequency band as an example for explanation.
  • the capacitance value of the first capacitor and the capacitance value of the second capacitor can be adjusted according to design requirements.
  • the first capacitor includes at least one of a lumped capacitor device and a distributed capacitor device; the second capacitor includes a lumped capacitor device, and At least one of the distributed capacitive devices.
  • the first capacitor includes a first metal layer and a second metal layer, and the first metal layer and the second metal layer are spaced apart along a first direction.
  • the projections of the first metal layer and the second metal layer along the first direction on the plane where the floor is located at least partially overlap, the first metal layer and the first frame are on the first
  • the feed point is electrically connected
  • the second metal layer is electrically connected to the first feed unit
  • the first direction is a direction perpendicular to the plane of the floor
  • the second capacitor includes a third metal layer and a fourth metal layer, the third metal layer and the fourth metal layer are spaced apart along the first direction, and the third metal layer and the fourth metal layer are in the first direction along the first direction.
  • the electrical parameters of the first capacitor or the electrical parameters of the second capacitor can be controlled (for example, the electrical parameters of the medium filled between the first metal layer and the second metal layer). Relative dielectric constant), adjust the capacitance value of the first capacitor or the second capacitor, thereby adjusting the radiation characteristics of the antenna.
  • the antenna further includes an inductor; a first end of the inductor is electrically connected to the second metal layer, and a second end of the inductor is electrically connected to the second metal layer.
  • the fourth metal layer is electrically connected.
  • the impedance corresponding to the CM mode and the impedance of the DM mode in the antenna can be adjusted, thereby adjusting the isolation between multiple antenna units.
  • the antenna when the first feeding unit feeds power, the antenna generates a first resonance and a second resonance, and the resonant frequency of the first resonance is lower than the first resonance.
  • the positions of the first feed point and the second feed point are adjusted so that when the electrical signal is fed in, the antenna can generate the first resonance, the second resonance, the third resonance and the fourth resonance. .
  • the frame further has a third position and a fourth position, and the frame between the second position and the fourth position is a second frame, so
  • the second frame includes the first frame, and the third position is between the fourth position and the first position; the frame is grounded at the third position, and a gap is provided at the fourth position;
  • the antenna includes a second frame, and the frame between the third position and the fourth position includes a second ground point, a third feed point and a fourth feed point, and the third feed point is located at between the second grounding point and the third position, and the fourth feeding point is located between the second grounding point and the fourth position.
  • the frame between the first position and the second position forms a first antenna
  • the first antenna may include a first antenna unit and a second antenna unit, and when the first feeding unit feeds power, as The first antenna unit, when feeding the second feeding unit, serves as the second antenna unit
  • the frame between the third position and the fourth position forms the second antenna
  • the third feeding unit feeds power
  • the fourth feeding unit feeds power
  • it serves as the fourth antenna unit. unit).
  • the isolation between the first antenna and the second antenna can be adjusted through the design of the frame between the first position and the third position.
  • the antenna when the first feeding unit feeds power, the antenna generates a first resonance and a second resonance, and the resonant frequency of the first resonance is lower than the first resonance.
  • the resonant frequency of the second resonance; the length of the frame between the first position and the third position is greater than or equal to one-fifth of the first wavelength and less than or equal to one-half of the first wavelength.
  • the first wavelength is the wavelength corresponding to the first resonance.
  • the isolation between the first antenna and the second antenna increases as the length of the frame between the first position and the third position increases.
  • the length of the frame between the first position and the third position is greater than or equal to half of the first wavelength, additional resonance may be generated, which may interfere with the antenna and affect the radiation characteristics of the antenna. Therefore, the first The length of the border between the first position and the third position needs to be within a reasonable range.
  • the length of the border between the first position and the third position is between one-fifth of the first wavelength and half of the first wavelength. between one.
  • an electronic device including: a floor; a conductive frame, the frame has a first position and a second position, the frame is grounded at the first position, and a gap is provided at the second position , the frame between the first position and the second position is a first frame; the antenna includes the first frame, the first frame includes a first ground point, a first feed point and a second feed point.
  • the antenna further includes a first feeding unit and a second feeding unit, the first feeding unit is electrically connected to the first frame at a first feeding point, and the second feeding unit is electrically connected to the first feeding point.
  • the second frame is electrically connected at the second feeding point; when the first feeding unit feeds power, the antenna generates a first resonance and a second resonance, and the resonant frequency of the first resonance is lower than the third resonance. The resonant frequency of the second resonance.
  • the antenna When the second feeding unit feeds power, the antenna generates a third resonance and a fourth resonance.
  • the resonant frequency band of the first resonance and the resonant frequency band of the third resonance are the same frequency, so The resonant frequency band of the second resonance and the resonant frequency band of the fourth resonance are of the same frequency; the length L1 of the first frame between the first position and the first ground point and the length L1 of the second position and the third The length L2 of the first frame between a ground point satisfies: 1.8 ⁇ L1/L2 ⁇ 2.2.
  • the antenna further includes a first capacitor and a second capacitor; the first end of the first capacitor and the first frame are at a first feeding point The second end of the first capacitor is electrically connected to the first feed unit; the first end of the second capacitor is electrically connected to the first frame at the second feed point, so The second end of the second capacitor is electrically connected to the second feeding unit.
  • the frequency ratio of the resonant frequency f1 of the first resonance and the resonant frequency f2 of the second resonance satisfies: 1.1 ⁇ f2/f1 ⁇ 1.5.
  • the capacitance value C1 of the first capacitor satisfies: 0.3pF ⁇ C1 ⁇ 1pF; and/or the capacitance value C2 of the second capacitor satisfies: 0.3 pF ⁇ C2 ⁇ 1pF.
  • the first capacitor includes at least one of a lumped capacitor device and a distributed capacitor device; the second capacitor includes a lumped capacitor device, and At least one of the distributed capacitive devices.
  • the first capacitor includes a first metal layer and a second metal layer, and the first metal layer and the second metal layer are spaced apart along the first direction.
  • the projections of the first metal layer and the second metal layer along the first direction on the plane where the floor is located at least partially overlap, the first metal layer and the first frame are on the first
  • the feed point is electrically connected
  • the second metal layer is electrically connected to the first feed unit
  • the first direction is a direction perpendicular to the plane of the floor
  • the second capacitor includes a third metal layer and a fourth metal layer, the third metal layer and the fourth metal layer are spaced apart along the first direction, and the third metal layer and the fourth metal layer are in the first direction along the first direction.
  • the antenna further includes an inductor; a first end of the inductor is electrically connected to the second metal layer, and a second end of the inductor is electrically connected to the second metal layer.
  • the fourth metal layer is electrically connected.
  • the length of the first frame between the first feed point and the first ground point is less than or equal to one-eighth of the first wavelength
  • the first wavelength is the wavelength corresponding to the first resonance; the length of the first frame between the second feed point and the first ground point is less than or equal to one-eighth of the first wavelength.
  • the frame further has a third position and a fourth position, and the frame between the second position and the fourth position is a second frame, so
  • the second frame includes the first frame, and the third position is between the fourth position and the first position; the frame is grounded at the third position, and a gap is provided at the fourth position;
  • the antenna includes a second frame, and the frame between the third position and the fourth position includes a second ground point, a third feed point and a fourth feed point. point, the third feeding point is located between the second grounding point and the third position, and the fourth feeding point is located between the second grounding point and the fourth position.
  • the antenna when the first feeding unit feeds power, the antenna generates a first resonance and a second resonance, and the resonant frequency of the first resonance is lower than the second resonance.
  • the resonant frequency of the second resonance; the length of the frame between the first position and the third position is greater than or equal to one-fifth of the first wavelength and less than or equal to one-half of the first wavelength.
  • the first wavelength is the wavelength corresponding to the first resonance.
  • FIG. 1 is a schematic structural diagram of an electronic device provided by an embodiment of the present application.
  • FIG. 2 is a schematic diagram of an electronic device 100 provided by an embodiment of the present application.
  • FIG 3 is a schematic diagram of a resonant path of a first resonance and a resonant path of a second resonance.
  • FIG. 4 is a schematic diagram of a resonance path of the third resonance and a resonance path of the fourth resonance.
  • FIG. 5 is a schematic diagram of the current generating the first resonance when the first feeding unit feeds power.
  • FIG. 6 is a schematic diagram of the current generating the second resonance when the first feeding unit feeds power.
  • Figure 7 is a schematic diagram of current distribution when the first feeding unit and the second feeding unit feed power.
  • FIG. 8 is a directional diagram of the first resonance and the directional diagram of the third resonance.
  • Figure 9 shows the current distribution generated by the second resonance and the current distribution generated by the fourth resonance.
  • FIG. 10 is a directional diagram of the second resonance generation and a directional diagram of the fourth resonance generation.
  • Figure 11 is a schematic structural diagram of the first capacitor and the second capacitor.
  • Figure 12 is the S parameters of the antenna in the electronic device shown in Figure 2.
  • Figure 13 is a simulation result diagram of the system efficiency and radiation efficiency of the antenna in the electronic device shown in Figure 2.
  • FIG. 14 is a schematic structural diagram of an electronic device 100 provided by an embodiment of the present application.
  • Figure 15 is an impedance circle diagram of CM mode and DM mode.
  • FIG. 16 is the S parameters of the antenna in the electronic device 100 shown in FIG. 14 .
  • FIG. 17 is a schematic structural diagram of an electronic device 200 provided by an embodiment of the present application.
  • FIG. 18 is a schematic structural diagram of another electronic device 200 provided by an embodiment of the present application.
  • FIG. 19 is a schematic structural diagram of yet another electronic device 200 provided by an embodiment of the present application.
  • FIG. 20 is an S parameter of the antenna in the electronic device 200 shown in FIG. 17 .
  • FIG. 21 is a simulation result of the isolation degree of the antenna in the electronic device 200 shown in FIG. 17 .
  • Coupling can be understood as direct coupling and/or indirect coupling, and "coupling connection” can be understood as direct coupling connection and/or indirect coupling connection.
  • Direct coupling can also be called “electrical connection”, which is understood as the physical contact and electrical conduction of components; it can also be understood as the printed circuit board (PCB) copper foil or wires between different components in the circuit structure.
  • PCB printed circuit board
  • indirect coupling can be understood as two conductors being electrically connected through space/non-contact.
  • indirect coupling may also be called capacitive coupling, for example, signal transmission is achieved by forming an equivalent capacitance through coupling between a gap between two conductive members.
  • Connection/connection It can refer to a mechanical connection relationship or a physical connection relationship.
  • the connection between A and B or the connection between A and B can refer to the existence of fastening components (such as screws, bolts, rivets, etc.) between A and B. Or A and B are in contact with each other and A and B are difficult to separate.
  • Capacitance can be understood as lumped capacitance and/or distributed capacitance.
  • Lumped capacitance refers to capacitive components, such as capacitor components; distributed capacitance (or distributed capacitance) refers to the equivalent capacitance formed by two conductive parts separated by a certain gap.
  • Resonance frequency is also called resonance frequency.
  • the resonant frequency can refer to the frequency at which the imaginary part of the antenna input impedance is zero.
  • 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 point frequency.
  • the return loss characteristics of the center frequency can be less than -20dB.
  • Resonance frequency band/communication frequency band/working frequency band No matter what type of antenna, it always works within a certain frequency range (frequency band width).
  • the operating frequency band of an antenna that supports the B40 band includes frequencies in the range of 2300MHz to 2400MHz.
  • the antenna The operating frequency band includes the B40 frequency band.
  • the frequency range that meets the index requirements can be regarded as the working frequency band of the antenna.
  • Electrical length It can refer to the ratio of physical length (i.e. mechanical length or geometric length) to the wavelength of the transmitted electromagnetic wave.
  • the electrical length can satisfy the following formula:
  • L is the physical length
  • ⁇ is the wavelength of the electromagnetic wave.
  • Wavelength or working wavelength, which can be the wavelength corresponding to the center frequency of the resonant frequency or the center frequency of the working frequency band supported by the antenna.
  • the operating wavelength can be the wavelength calculated using the frequency of 1955MHz.
  • "working wavelength” can also refer to the wavelength corresponding to the resonant frequency or non-center frequency of the working frequency band.
  • the middle (position) of the conductor can be a conductor section including the midpoint on the conductor, or a conductor section of one-eighth wavelength including the midpoint of the conductor, where the wavelength can be corresponding to the working frequency band of the antenna.
  • the wavelength can be the wavelength corresponding to the center frequency of the working frequency band, or the wavelength corresponding to the resonance point.
  • the middle (location) of the conductor may be a portion of the conductor on the conductor that is less than a predetermined threshold (eg, 1 mm, 2 mm, or 2.5 mm) from the midpoint.
  • symmetry for example, axial symmetry, or central symmetry, etc.
  • parallel, perpendicular identical (for example, the same length, the same width, the same structure, etc.) are all for the current In terms of technological level, rather than an absolutely strict definition in a mathematical sense.
  • Antenna radiation efficiency refers to the ratio of the power radiated by the antenna to space (that is, the power of the electromagnetic wave effectively converted) and the active power input to the antenna.
  • the active power input to the antenna the input power of the antenna - the loss power;
  • the loss power mainly includes the return loss power and the ohmic loss power of the metal and/or the dielectric loss power.
  • Radiation efficiency is a measure of the radiation ability of an antenna. Metal loss and dielectric loss are both influencing factors of radiation efficiency.
  • 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 is.
  • Antenna return loss It can be understood as the ratio of the signal power reflected back to the antenna port through the antenna circuit and the transmit power of the antenna port. The smaller the reflected signal is, the greater the signal radiated to space through the antenna is, and the greater the antenna's radiation efficiency is. The larger the reflected signal is, the smaller the signal radiated to space through the antenna is, and the smaller the antenna's radiation efficiency is.
  • Antenna return loss can be represented by the S11 parameter, which is one of the S parameters.
  • S11 represents the reflection coefficient, which can characterize the antenna's emission efficiency.
  • the S11 parameter is usually a negative number. The smaller the S11 parameter, the smaller the return loss of the antenna, and the smaller the energy reflected back by the antenna itself, which means that more energy actually enters the antenna, and the higher the system efficiency of the antenna is. S11 parameter The larger the value, the greater the antenna return loss and the lower the antenna system efficiency.
  • the S11 value of -6dB is generally used as a standard.
  • the S11 value of an antenna is less than -6dB, it can be considered that the antenna can work normally, or the antenna's radiation efficiency can be considered to be good.
  • Ground, or floor can generally refer to at least part of any ground layer, or ground plate, or ground metal layer, etc. in an electronic device (such as a mobile phone), or any combination of any of the above ground layers, or ground plates, or ground components, etc. At least in part, “ground” can be used to ground components within electronic equipment. In one embodiment, "ground” may be the grounding layer of the circuit board of the electronic device, or it may be the grounding plate formed by the middle frame of the electronic device or the grounding metal layer formed by the metal film under the screen.
  • the circuit board may be a printed circuit board (PCB), such as an 8-, 10-, or 12- to 14-layer board with 8, 10, 12, 13, or 14 layers of conductive material, or by a circuit board such as Components separated and electrically insulated by dielectric or insulating layers such as fiberglass, polymer, etc.
  • the circuit board includes a dielectric substrate, a ground layer and a wiring layer, and the wiring layer and the ground layer are electrically connected through vias.
  • components such as a display, touch screen, input buttons, transmitter, processor, memory, battery, charging circuit, system on chip (SoC) structure, etc. may be mounted on or connected to the circuit board; Or electrically connected to trace and/or ground planes in the circuit board.
  • SoC system on chip
  • the conductive material may be any of the following materials: copper, aluminum, stainless steel, brass and their alloys, copper foil on an insulating substrate, aluminum on an insulating substrate. foil, gold foil on an insulating substrate, silver-plated copper, silver-plated copper foil on an insulating substrate, silver foil and tin-plated copper on an insulating substrate, cloth impregnated with graphite powder, graphite-coated substrate, copper-plated base plate, brass plated base plate and aluminum plated base plate.
  • the ground layer/ground plate/ground metal layer can also be made of other conductive materials.
  • PEC Ideal electric conductor
  • Ideal magnetic conductor (perfect magnetic conductor, PMC): On the surface of an ideal magnetic conductor, all magnetic fields are perpendicular to the PMC (the electric fields are parallel to the PMC).
  • the resonant frequency band of the first resonance and the resonant frequency band of the second resonance (also called the same frequency, the same) mentioned in this article can be understood as any one of the following situations:
  • the resonant frequency band of the first resonance and the resonant frequency band of the second resonance include the same communication frequency band.
  • the first resonance and the second resonance may be applied to the MIMO antenna system, and the resonant frequency band of the first resonance and the resonant frequency band of the second resonance both include In the sub6G frequency band in 5G, it can be considered that the resonant frequency band of the first resonance and the resonant frequency band of the second resonance are at the same frequency.
  • the resonant frequency band of the first resonance and the resonant frequency band of the second resonance have partial frequency overlap.
  • the resonant frequency band of the first resonance includes B35 (1.85-1.91GHz) in LTE
  • the resonant frequency band of the second resonance includes B39 ( 1.88-1.92GHz)
  • the resonant frequency band of the first resonance and the resonant frequency band of the second resonance partially overlap, then it can be considered that the resonant frequency band of the first resonance and the resonant frequency band of the second resonance are of the same frequency.
  • the electronic device 10 may include: a cover (cover) 13, a display screen/module (display) 15, a printed circuit board (PCB) 17, a middle frame (middle frame) 19 and a rear panel.
  • Cover (rear cover)21 It should be understood that in some embodiments, the cover 13 can be a glass cover (cover glass), or can be replaced with a cover made of other materials, such as an ultra-thin glass material cover, PET (Polyethylene terephthalate, polytetraphenylene). Ethylene formate) material cover, etc.
  • the cover 13 can be placed close to the display module 15 and can be mainly used to protect the display module 15 and prevent dust.
  • the display module 15 may include a liquid crystal display panel (LCD), a light emitting diode (LED) display panel or an organic light-emitting semiconductor (organic light-emitting diode, OLED) display panel, etc. , the embodiment of the present application does not limit this.
  • LCD liquid crystal display panel
  • LED light emitting diode
  • OLED organic light-emitting semiconductor
  • the middle frame 19 mainly plays a supporting role of the whole machine.
  • Figure 1 shows that the PCB 17 is disposed between the middle frame 19 and the back cover 21. It should be understood that in one embodiment, the PCB 17 can also be disposed between the middle frame 19 and the display module 15.
  • the printed circuit board PCB17 can use a flame-resistant material (FR-4) dielectric board, a Rogers dielectric board, or a mixed dielectric board of Rogers and FR-4, etc.
  • FR-4 is the code for a flame-resistant material grade
  • Rogers dielectric board is a high-frequency board.
  • PCB17 carries electronic components, such as radio frequency chips, etc.
  • a metal layer may 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 PCB17, and can also be used for grounding other components, such as bracket antennas, frame antennas, etc.
  • the metal layer can be called a floor, a ground plate, or a ground layer.
  • the metal layer may be formed by etching metal on the surface of any dielectric board in the PCB 17 .
  • the metal layer used for grounding may be disposed on a side of the printed circuit board PCB 17 close to the middle frame 19 .
  • the edge of the printed circuit board PCB 17 can be regarded as the edge of its ground plane.
  • the metal middle frame 19 can also be used for grounding the above components.
  • the electronic device 10 may also have other floors/ground plates/ground layers, as mentioned above, which will not be described again here.
  • 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 may be disposed between the middle frame 19 and the display module 15 , which is not limited in the embodiment of the present application.
  • the PCB 17 is divided into a main board and a sub-board.
  • the battery can be disposed between the main board and the sub-board.
  • the main board can be disposed between the middle frame 19 and the upper edge of the battery, and the sub-board can be disposed between the main board and the sub-board. Between the middle frame 19 and the lower edge of the battery.
  • the electronic device 10 may also include a frame 11, and the frame 11 may be formed of a conductive material such as metal.
  • the frame 11 may be disposed between the display module 15 and the back cover 21 and extend circumferentially around the periphery of the electronic device 10 .
  • the frame 11 may have four sides surrounding the display module 15 to help fix the display module 15 .
  • the frame 11 made of metal material can be directly used as the metal frame of the electronic device 10 to form the appearance of a metal frame, which is suitable for metal industrial design (ID).
  • the outer surface of the frame 11 can also be made of non-metal material, such as a plastic frame, to form the appearance of a non-metal frame, which is suitable for non-metal IDs.
  • the middle frame 19 may include a frame 11 , and the middle frame 19 including the frame 11 may act as an integral part to support electronic devices in the entire machine.
  • the cover 13 and the back cover 21 are respectively covered along the upper and lower edges of the frame to form a shell or housing of the electronic device.
  • the cover 13 , the back cover 21 , the frame 11 and/or the middle frame 19 can be collectively referred to as the casing or housing of the electronic device 10 .
  • casing or housing can be used to refer to part or all of any one of the cover 13 , the back cover 21 , the frame 11 or the middle frame 19 , or to refer to the cover 13 , the back cover 21 , the frame 11 or the middle frame 19 . Any combination of some or all of Box 19.
  • the frame 11 on the middle frame 19 can be at least partially used as an antenna radiator to receive/transmit frequency signals. There can be a gap between this part of the frame as the radiator and other parts of the middle frame 19, thereby ensuring that the antenna radiator has good performance. radiation environment.
  • the middle frame 19 may be provided with an aperture at this part of the frame serving as a radiator to facilitate radiation of the antenna.
  • the frame 11 may not be regarded as a part of the middle frame 19 .
  • the frame 11 can be connected to the middle frame 19 and formed integrally.
  • the frame 11 may include an inwardly extending protruding piece to be connected to the middle frame 19 , for example, through elastic pieces, screws, welding, etc.
  • the protruding parts of the frame 11 can also be used to receive feed signals, so that at least a part of the frame 11 acts as a radiator of the antenna to receive/transmit frequency signals.
  • the back cover 21 can be a back cover made of metal material; it can also be a back cover made of non-conductive materials, such as glass back cover, plastic back cover and other non-metal back covers; or it can also include both conductive materials and non-conductive materials. Material back cover.
  • the antenna of the electronic device 10 can also be disposed in the frame 11 .
  • the antenna radiator can be located in the electronic device 10 and arranged along the frame 11 .
  • the antenna radiator is arranged 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 to achieve better signal transmission effects.
  • the arrangement of the antenna radiator close to the frame 11 means that the antenna radiator can be arranged close to the frame 11 or close to the frame 11 . For example, there can be a certain tiny gap between the antenna radiator and the frame 11 .
  • the antenna of the electronic device 10 may also be disposed in the housing, such as a bracket antenna, a millimeter wave antenna, etc. (not shown in FIG. 1 ).
  • the clearance of the antenna arranged in the housing can be obtained by the slits/openings on any one of the middle frame, and/or the frame, and/or the back cover, and/or the display screen, or it can be formed between any of them.
  • the non-conductive gap/aperture is obtained, and the clearance setting of the antenna can ensure the radiation performance of the antenna.
  • the clearance of the antenna may be a non-conductive area formed by any conductive component in the electronic device 10, and the antenna radiates signals to the external space through the non-conductive area.
  • the antenna 40 may be in the form of a flexible printed circuit (FPC)-based antenna, a laser-direct-structuring (LDS)-based antenna, or a microstrip antenna (microstrip disk antenna). , MDA) and other antenna forms.
  • the antenna may also adopt a transparent structure embedded inside the screen of the electronic device 10 , so that the antenna is a transparent antenna unit embedded inside the screen of the electronic device 10 .
  • FIG. 1 only schematically shows some components included in the electronic device 10 , and the actual shapes, actual sizes and actual structures of these components are not limited by FIG. 1 .
  • the side where the display screen of the electronic device is located can be considered to be the front, the side where the back cover is located is the back, and the side where the frame is located is the side.
  • the orientation of the electronic device has a top, a bottom, a left side, and a right side.
  • FIG. 2 is a schematic diagram of an electronic device 100 provided by an embodiment of the present application.
  • the electronic device 100 may include a floor 110 , a frame 11 and an antenna 120 .
  • the frame 11 has a first position 101 and a second position 102.
  • the frame 11 is grounded through the floor 110 at the first position 101.
  • a gap is provided at the second position 102.
  • the frame 11 between the first position 101 and the second position 102 is the first frame 104.
  • the antenna 120 includes a first frame 104 , and the first frame 104 serves as a radiator of the antenna 120 .
  • the first frame 104 includes a ground point 121 , a first feeding point 131 and a second feeding point 132 .
  • the first feed point 131 is located between the ground point 121 and the first location 101
  • the second feed point 132 is located between the ground point 121 and the second location 102 .
  • the antenna 120 may further include a first capacitive component, a second capacitive component, a first feeding unit 133 and a second feeding unit 134.
  • the first end of the first capacitor component is electrically connected to the first frame 104 at the first feed point 131, the second end of the first capacitor component is electrically connected to the first feed unit 133, and the first capacitor component is at the first feed point 131.
  • the electrical point 131 is connected in series between the first frame 104 and the first feeding unit 133 .
  • the first end of the second capacitor component is electrically connected to the first frame 104 at the second feed point 132, the second end of the second capacitor component is electrically connected to the second feed unit 134, and the second capacitor component is at the second feed point 132.
  • the electrical point 132 is connected in series between the first frame 104 and the second feeding unit 134 .
  • the first capacitor component includes a first capacitor 122 and the second capacitor component includes a second capacitor 123 .
  • the length L1 of the first frame between the first position 101 and the ground point 121 and the length L2 of the first frame between the second position 102 and the ground point 121 satisfy: 1.8 ⁇ L1/L2 ⁇ 2.2.
  • the current path in the process of the electrical signal returning to the ground from the ground point 121 also includes A conductive structural member is formed integrally with the first frame and extends inward from the inner surface of the first frame.
  • the length of the conductive structural member is L0. It should be understood that the length L1 of the first frame between the first position 101 and the ground point 121 can also be understood as the sum of the physical lengths L1' and L0 of the first frame between the first position 101 and the ground point 121.
  • the length L2 of the first frame between the second position 102 and the ground point 121 can also be understood as the sum of the physical lengths L2' and L0 of the first frame between the second position 102 and the ground point 121.
  • the current path in the process of the electrical signal returning to the ground from the ground point 121 may also include a conductive connector disposed on the PCB or the floor 110, and the conductive connector is connected to the third One frame is coupled, and the length of the conductive structural member is L0'.
  • the length L1 of the first frame between the first position 101 and the ground point 121 can also be understood as the sum of the physical lengths L1' and L0' of the first frame between the first position 101 and the ground point 121
  • the length L2 of the first frame between the second position 102 and the ground point 121 can also be understood as the sum of the physical lengths L2' and L0' of the first frame between the second position 102 and the ground point 121.
  • the physical length of the first frame 104 can be changed without changing the electrical length. Therefore, correspondingly, between L1 and L2 The ratio between them may also change.
  • the antenna 120 may serve as the first antenna unit to generate a first resonance and a second resonance, and the resonant frequency of the first resonance is lower than the resonant frequency of the second resonance.
  • the first frame 104 between the first position 101 and the second position 102 is used to generate the first resonance
  • the first frame 104 between the first position 101 and the first feed point 131 is used to generate the second resonance. It should be understood that the first frame 104 between the first position 101 and the second position 102 is used to generate the first resonance. It can be understood that the first frame 104 between the first position 101 and the second position 102 is used to generate the first resonance.
  • the electrical signal is fed into the main radiator, the first resonance is generated by this part of the frame.
  • the antenna 120 has a linear antenna structure, the operating mode is a three-quarter wavelength mode, and the corresponding resonance path is shown in Figure 3 .
  • the antenna 120 has a closed slot structure, the working mode is a half-wavelength mode, and the corresponding resonance path is shown in Figure 3 .
  • the antenna 120 may serve as the second antenna unit to generate the third resonance and the fourth resonance.
  • the resonance frequency band of the first resonance and the resonance frequency band of the third resonance are the same frequency (the resonance of the first resonance).
  • the resonant frequency band of the second resonance and the resonant frequency band of the third resonance both include the first frequency band
  • the resonant frequency band of the second resonance and the resonant frequency band of the fourth resonance are the same frequency (the resonant frequency band of the second resonance and the resonant frequency band of the fourth resonance both include the second frequency band) . Therefore, the antenna 120 can be applied in a MIMO system.
  • the third resonance is generated by the first frame 104 between the ground point 121 and the second position 102
  • the fourth resonance is generated by the first frame 104 between the second feeding point 132 and the second position 102
  • the antenna 120 has an inverted-F antenna (IFA) structure
  • the working mode is a quarter-wavelength mode
  • the resonant path is shown in Figure 4.
  • the antenna 120 has a slotted hole structure
  • the working mode is a quarter-wavelength mode
  • the resonance path is shown in Figure 4 .
  • the technical solution provided by the embodiment of the present application forms a dual-antenna structure that uses the frame of the electronic device as the radiator of the antenna, and only opens a single slit on the frame 11.
  • the complexity of the manufacturing process is greatly reduced, and the requirements for the frame are reduced. Integrity impact.
  • each antenna unit in the dual-antenna structure can generate dual resonance, allowing it to operate in two different frequency bands at the same time, meeting the communication needs of electronic equipment, and good isolation between the two antenna units can be maintained.
  • the length of the first frame 104 is three-quarters of the first wavelength
  • the first wavelength is the wavelength corresponding to the first resonance.
  • the first wavelength may be the wavelength corresponding to the resonance point of the first resonance, Alternatively, it may also be the wavelength corresponding to the center frequency of the resonant frequency band of the first resonance. It should be understood that since the resonant frequency band of the first resonance and the resonant frequency band of the third resonance are at the same frequency, the first wavelength may be the wavelength corresponding to the third resonance.
  • the physical length of the first frame 104 may increase or decrease. Therefore, when electronic components are provided, the physical length of the first frame 104 may be within the range of plus or minus thirty percent ( ⁇ 30%) of three-quarters of the first wavelength.
  • the length of the first frame 104 between the first feed point 131 and the ground point 121 is less than or equal to one-eighth of the first wavelength. In one embodiment, the length of the first frame 104 between the second feed point 132 and the ground point 121 is less than or equal to one-eighth of the first wavelength.
  • the positions of the first feeding point 131 and the second feeding point 132 are adjusted so that when the electrical signal is fed, the antenna 120 can generate the first resonance, the second resonance, the third resonance and the fourth resonance.
  • the resonant frequency f1 of the first resonance and the resonant frequency f2 of the second resonance satisfy: 1.1 ⁇ f2/f1 ⁇ 1.5.
  • the resonant frequency f3 of the third resonance and the resonant frequency f4 of the fourth resonance satisfy: 1.1 ⁇ f4/f3 ⁇ 1.5.
  • the antenna 120 reuses part of the frame when it generates the first resonance, the second resonance, the third resonance and the fourth resonance, therefore, the antenna 120 resonates at high frequency (the resonance frequency band of the second resonance and the resonance of the fourth resonance) Both the frequency band) and low frequency (the resonant frequency band of the first resonance and the resonant frequency band of the third resonance) have good radiation characteristics, and the frequency difference between low frequency and high frequency should be kept within a reasonable range.
  • the first feeding unit 133 indirectly couples and feeds an electrical signal through the first capacitor 122, the first antenna unit excites the first resonance in the first frequency band and the second resonance in the second frequency band.
  • the first capacitor 122 can be in an open circuit state in the first frequency band and in a short circuit state in the second frequency band.
  • the current on the frame between the first position and the second position is as shown in Figure 5.
  • the first feeding point is the current zero point area, corresponding to the electric field intensity point area. A boundary condition of a large electric field exists at a feed point.
  • the current on the frame between the first position and the first feed point is as shown in Figure 6.
  • the first feed point is the current strong point area, corresponding to the electric field zero point area, Boundary conditions for high currents are present at the first feed point. Due to the different boundary conditions between the first resonance and the second resonance, although the first frame 104 between the first position 101 and the first feed point 131 is reused, good isolation between the two can still be maintained.
  • the second feeding unit 134 indirectly couples and feeds an electrical signal through the second capacitor 123
  • the second antenna unit excites the third resonance in the first frequency band and the fourth resonance in the second frequency band.
  • the second capacitor 123 can be made into an open circuit state in the first frequency band and a short circuit state in the second frequency band, so that the boundary conditions of the third resonance and the fourth resonance generated by the antenna 120 are different. This increases the isolation between the two.
  • the working mode of the antenna is the three-quarter wavelength mode.
  • the antenna has two current strong point areas (current The area where the strong point is located) and a current zero point area (the area where the current zero point is located), the current distribution is shown in Figure 5.
  • Figure 5 when the grounding point is located in the strong current area, corresponding to the zero point area of the electric field, and meets the corresponding boundary conditions, the grounding point does not affect the working mode of the antenna.
  • the grounding point At the second feed point, there is a strong current area, corresponding to the zero point area of the electric field.
  • the second feeding point is the current zero point area, corresponding to the electric field intensity point area. Therefore, when the first feeding unit feeds an electrical signal, at the second feeding point, their boundary conditions are mutually exclusive, and the electrical signal fed by the first feeding unit has less influence on the second feeding unit. Therefore, in the first frequency band, there is good isolation between the first antenna unit (first resonance) and the second antenna unit (third resonance).
  • the current distribution on the first frame is as shown in Figure 7 As shown in (a).
  • the current distribution on the first frame is as shown in Figure 7 shown in (b).
  • the current on the right side of the first frame is centrally symmetrically distributed, which can be equivalent to the presence of PMC (the current on both sides of the PMC is symmetrically distributed along the PCM), which can be a CM mode characteristic.
  • the CM mode can be understood as the current on the radiator showing a reverse distribution on both sides of the middle position (for example, the position where PCM is equivalent to the presence of PCM in (a) in Figure 7), such as a symmetrical distribution, and the electric field is on both sides of the middle position. , showing the same distribution.
  • the current on the right side of the first frame is asymmetrically distributed (for example, distributed in the same direction), which can be equivalent to the presence of PEC (the current on both sides of the PEC is asymmetrically distributed along the PEC, for example, Co-directional distribution), which can be DM mode characteristics.
  • the DM mode can be understood as the current on the radiator showing the same direction distribution, such as an asymmetric distribution, on both sides of the middle position (for example, the position where PEC is equivalent to PEC in (b) in Figure 7); the electric field is on both sides of the middle position. Distributed inversely.
  • the antenna has both CM mode and DM mode in the first frequency band. Since the radiation beams generated by the current distribution in CM mode and DM mode are integrated and orthogonal in the far field, the mutual influence between CM mode and DM mode is small. Therefore, It can achieve good isolation between the two antenna sub-units in the dual-antenna structure. For example, the first antenna unit (first resonance) and the second antenna unit (third resonance) can be maintained in the first frequency band. Good isolation.
  • the pattern generated by the first antenna unit is shown in (a) in Figure 8. Its maximum radiation direction is the x direction.
  • the pattern produced by the second antenna unit is shown in Figure 8. As shown in (b), the maximum radiation direction is the z direction.
  • the current distribution on the first frame is as shown in (a) in Figure 9 .
  • the current distribution on the first frame is as shown in (b) of Figure 9 .
  • the first feeding unit feeds an electrical signal
  • the current on the first frame is mainly concentrated between the first feeding point and the first position.
  • the second feeding unit feeds an electrical signal
  • the current on the first frame is mainly concentrated between the second feeding point and the second position. There is less current flowing between the first feed point and the second feed point, so that in the second frequency band, there is good communication between the first antenna unit (second resonance) and the second antenna unit (fourth resonance). Isolation.
  • the antenna 120 has a closed slot structure, and the directional pattern generated by the antenna 120 is shown in (a) and (b) in Figure 10, and its maximum radiation direction is between the z direction and the x direction.
  • the antenna 120 has a slotted hole structure, and the directional pattern generated by the antenna 120 is as shown in (c) in Figure 10 , and its maximum radiation is directed toward the opening direction, for example, the y direction. Therefore, when the second resonance and the fourth resonance are generated, the maximum radiation directions of the patterns generated by the antenna 120 are not the same, and there is spatial diversity between them, so that In the second frequency band, there is good isolation between the first antenna unit (second resonance) and the second antenna unit (fourth resonance).
  • the working frequency band of the antenna 120 may include at least part of the frequency bands N77 (3300MHz-42000MHz), N78 (3300MHz-3800MHz) or N79 (4400MHz-5000MHz).
  • the capacitance value C1 of the first capacitor 122 satisfies: 0.3pF ⁇ C1 ⁇ 1pF.
  • the capacitance value C2 of the second capacitor 123 satisfies: 0.3pF ⁇ C2 ⁇ 1pF.
  • the first capacitor 122 includes at least one of a lumped capacitive device and a distributed capacitive device.
  • the second capacitor 123 includes at least one of a lumped capacitive device and a distributed capacitive device.
  • the first capacitor when the first capacitor is a distributed capacitor, the first capacitor includes a first metal layer 1221 and a second metal layer 1222, as shown in (a) of Figure 11 .
  • the first metal layer 1221 and the second metal layer 1222 are spaced apart along the first direction, and the projections of the first metal layer 1221 and the second metal layer 1222 along the first direction on the plane where the floor 110 is located at least partially overlap.
  • the first metal layer 1221 and the first frame 104 are electrically connected at the first feed point 131, as shown in (b) of FIG. 11 .
  • the second metal layer 1222 is electrically connected to the first feeding unit 133, as shown in (c) of FIG. 11 .
  • the first direction is a direction perpendicular to the plane where the floor 110 is located, such as the z direction.
  • the second capacitor when the second capacitor is a distributed capacitor, the second capacitor includes a third metal layer 1231 and a fourth metal layer 1232.
  • the third metal layer 1231 and the fourth metal layer 1232 are spaced apart along the first direction, and the projections of the third metal layer 1231 and the fourth metal layer 1232 along the first direction on the plane where the floor 110 is located at least partially overlap.
  • the third metal layer 1231 is electrically connected to the first frame 104 at the second feed point 132, as shown in (b) of Figure 11 .
  • the fourth metal layer 1232 is electrically connected to the second power feeding unit 134, as shown in (c) of FIG. 11 .
  • ⁇ is the relative dielectric constant of the medium filled between the two electrode plates (for example, the first metal layer 1221 and the second metal layer 1222); ⁇ is the absolute dielectric constant in vacuum; k is the electrostatic force constant; S is The area facing the two electrode plates, such as the relative area of the first metal layer 1221 and the second metal layer 1222 in the embodiment of the present application (the first metal layer 1221 and the second metal layer 1222 are on the plane where the floor 110 is located along the first direction.
  • d is the vertical distance between the two electrode plates, such as the distance along the first direction (z direction) between the first metal layer 1221 and the second metal layer 1222 in the embodiment of the present application.
  • the capacitance value of the first capacitor 122 or the second capacitor 123 can be adjusted by controlling the electrical parameters of the first capacitor 122 or the second capacitor 123, thereby adjusting the radiation characteristics of the antenna.
  • first metal layer 1221 and the third metal layer 1231 may be disposed on the first surface of the PCB 17 .
  • the second metal layer 1222 and the fourth metal layer 1232 may be disposed on the second surface of the PCB 17 .
  • first surface and the second surface of the PCB 17 may be the upper surface and the lower surface of the PCB 17 , or may be any surface of a plurality of dielectric boards stacked in the PCB (for example, the first metal layer may be provided anywhere in the PCB 17 between two adjacent dielectric plates), the embodiment of the present application does not limit this.
  • Figures 12 and 13 are simulation results of the antenna in the electronic device shown in Figure 2.
  • Figure 12 is the S parameter of the antenna in the electronic device shown in Figure 2.
  • Figure 13 is a simulation result diagram of the system efficiency and radiation efficiency of the antenna in the electronic device shown in Figure 2.
  • the embodiment of the present application only assumes that the length of the first frame 104 is 51mm, the clearance of the antenna (the distance between the frame 11 and the floor 110) is 3mm, and the size of the floor 110 is 120mm ⁇ 50mm.
  • the capacitance value of the first capacitor 122 is 0.4pF, and the capacitance value of the second capacitor 123 is 0.7pF.
  • the above electrical parameters can be adjusted according to the actual design, and this application does not limit this.
  • the working frequency band of the first antenna unit (when the first feed point feeds the electrical signal) can include 3.3GHz to 5GHz, and can be applied to 5G The N77, N78 and N79 frequency bands.
  • the working frequency band of the second antenna unit (when the second feed point feeds the electrical signal) can include 3.3GHz to 5GHz, and can be applied to the N77, N78 and N79 frequency bands of 5G.
  • first antenna unit generates the first resonance and the second antenna unit generates the third resonance share part of the frame as the radiator, in the first frequency band (3.5GHz), between the first antenna unit and the second antenna unit
  • the isolation is greater than -16dB.
  • the maximum radiation direction of the pattern generated by the first antenna unit and the pattern generated by the second antenna unit are not the same.
  • the first antenna unit generates the second
  • the resonance and the second antenna unit generate the fourth resonance and do not share the radiator, so good isolation can be maintained between the first antenna unit and the second antenna unit (isolation is greater than -25dB).
  • the system efficiency (greater than -3dB) and radiation efficiency (greater than -2dB) of the first antenna unit and the second antenna unit can meet communication needs.
  • FIG. 14 is a schematic structural diagram of an electronic device 100 provided by an embodiment of the present application.
  • the antenna in the electronic device 100 shown in FIG. 14 also includes an inductor 151 .
  • the inductor 151 may be connected in series between the first capacitor 122 and the second capacitor 123 .
  • the inductor 151 between the first capacitor 122 and the second capacitor 123, the impedance corresponding to the CM mode and the impedance of the DM mode in the antenna can be adjusted, thereby adjusting the isolation between multiple antenna units.
  • the inductance value L1 of the inductor 151 satisfies: 1nH ⁇ L1 ⁇ 8nH.
  • the inductor 151 may be connected in series between the metal layer forming the first capacitor 122 and the metal layer forming the second capacitor 123 .
  • the antenna has both a CM mode and a DM mode.
  • the inductor 151 By connecting the inductor 151 in series between the first capacitor 122 and the second capacitor 123, the impedance corresponding to the CM mode and the impedance of the DM mode in the antenna can be adjusted.
  • the impedance corresponding to the CM mode and the impedance of the DM mode in Figure 14 By connecting an inductor in series between the first capacitor and the second capacitor, the impedance corresponding to the CM mode and the impedance of the DM mode are The landing points are relatively close to each other. Especially near low frequency (3GHz), the distance between the impedance corresponding to the CM mode and the impedance landing point of the DM mode is significantly improved. It should be understood that as the impedance corresponding to the CM mode and the impedance of the DM mode get closer, the isolation between the two will increase.
  • FIG. 16 it is the S parameter of the antenna in the electronic device 100 shown in FIG. 14 .
  • the return loss of the first antenna unit (S11) and the return loss of the second antenna unit (S22) are similar to the results in the S-parameter simulation diagram corresponding to the antenna in Figure 2, while the difference between the first antenna unit and the second antenna unit
  • the isolation is significantly improved, especially in the low-frequency band (for example, near 3.3GHz), where the isolation is improved by about 10dB.
  • FIG. 17 is a schematic structural diagram of an electronic device 200 provided by an embodiment of the present application.
  • the electronic device 200 may include a floor 210 , a frame 11 and an antenna 220 .
  • the frame 11 has a first position 201, a second position 202, a third position 203 and a fourth position 204 (the first position 201 is located between the second position 202 and the fourth position 204, and the third position 203 is located between the first position 202 and the fourth position 204. between position 201 and fourth position 204).
  • the frame 11 is grounded through the floor 210 at the first position 201 and the third position 203, and gaps are provided at the second position 102 and the fourth position 204.
  • the frame 11 between the second position 102 and the fourth position 204 is the first frame 205 .
  • the antenna 220 includes a first frame 205 , and the first frame 205 serves as a radiator of the antenna 220 .
  • the first frame 205 includes a first ground point 221, a second ground point 222, a first feed point 231, a second feed point 232, a third feed point 233 and a fourth feed point 234.
  • the first grounding point 221 , the first feeding point 231 and the second feeding point 232 may be located on the border between the first position 201 and the second position 202 .
  • the second grounding point 222 , the third feeding point 233 and the fourth feeding point 234 may be located on the border between the third position 203 and the fourth position 204 .
  • the first feeding point 231 is located between the first grounding point 221 and the first position 201
  • the second feeding point 232 is located between the first grounding point 221 and the second position 202 .
  • the third feeding point 233 is located between the second grounding point 222 and the third position 203
  • the fourth feeding point 234 is located between the second grounding point 222 and the fourth position 204 .
  • the antenna 220 may also include a first capacitor 241, a second capacitor 242, a third capacitor 243 and a fourth capacitor 244, as well as a first feeding unit 251 and a second feeding unit 252, a third feeding unit 253 and a second feeding unit 252. Electrical unit 254.
  • the first end of the first capacitor 241 is electrically connected to the first frame 205 at the first feed point 231, the second end of the first capacitor 241 is electrically connected to the first feed unit 251, and the first capacitor 241 is at the first feed point 231.
  • a feed point 231 is connected in series between the first frame 205 and the first feed unit 251 .
  • the first end of the second capacitor 242 is electrically connected to the first frame 205 at the second feed point 232.
  • the second end of the second capacitor 242 is electrically connected to the second feed unit 252.
  • the second capacitor 242 is at the second feed point 232.
  • the electrical point 232 is connected in series between the first frame 205 and the second feed between units 252.
  • the first end of the third capacitor 243 is electrically connected to the first frame 205 at the third feed point 233.
  • the second end of the third capacitor 243 is electrically connected to the third feed unit 253.
  • the third capacitor 243 is at the third feed point 233.
  • the electrical point 233 is connected in series between the first frame 205 and the third feeding unit 253 .
  • the first end of the fourth capacitor 244 is electrically connected to the first frame 205 at the fourth feed point 234.
  • the second end of the fourth capacitor 244 is electrically connected to the fourth feed unit 254.
  • the fourth capacitor 244 is at the fourth feed point.
  • the electrical point 234 is connected in series between the first frame 205 and the fourth feeding unit 254 .
  • the length L1 of the frame between the first position 201 and the first ground point 221 and the length L2 of the frame between the second position 202 and the first ground point 221 satisfy: 1.8 ⁇ L1/L2 ⁇ 2.2.
  • the length L3 of the frame between the third position 203 and the second ground point 222 and the length L4 of the frame between the fourth position 204 and the second ground point 222 satisfy: 1.8 ⁇ L3/L4 ⁇ 2.2.
  • the difference between the antenna 220 shown in FIG. 17 and the antenna 120 shown in FIG. 2 is that the antenna 220 may include two symmetrical antennas 120 shown in FIG. 2 to form a four-antenna structure.
  • the frame between the first position 201 and the second position 202 forms a first antenna (the first antenna may include a first antenna unit and a second antenna unit.
  • the first feeding unit 251 feeds power, it serves as the first antenna unit.
  • the second feeding unit 252 feeds power, it serves as the second antenna unit
  • the frame between the third position 203 and the fourth position 204 forms the second antenna (the second antenna may include a third antenna unit and a fourth antenna unit , when the third feeding unit 253 feeds power, it serves as the third antenna unit; when the fourth feeding unit 254 feeds power, it serves as the fourth antenna unit).
  • the first antenna and the second antenna have the same structure as the antenna 120 shown in FIG. 2 .
  • the isolation between the first antenna and the second antenna can be adjusted through the design of the frame between the first position 201 and the third position 203 .
  • the frame between the first position 201 and the second position 202 forms the first antenna
  • the frame between the third position 203 and the fourth position 204 forms the second antenna.
  • the working frequency band may be the same frequency, for example,
  • the first antenna and the second antenna can work with MIMO systems.
  • the working frequency band of the first antenna and the working frequency band of the second antenna may be different, and may respectively operate in different communication frequency bands. It should be understood that when the operating frequency band of the first antenna and the operating frequency band of the second antenna may be different, the structure of the first antenna and the structure of the second antenna are the same, but the length of the corresponding radiator may be adjusted.
  • This application will There is no limitation and can be adjusted according to the actual design. To simplify the discussion, the embodiment of this application only takes the example that the working frequency band of the first antenna and the working frequency band of the second antenna are the same.
  • the length of the border between the first position 201 and the third position 203 is greater than or equal to one-fifth of the first wavelength and less than or equal to one-half of the first wavelength, and the first wavelength is An antenna generates a wavelength corresponding to the first resonance (the low-frequency resonance generated when the first feed point unit feeds power). It should be understood that the antenna 220 may include multiple resonances with the same frequency, and the first resonance may also be replaced by other resonances with the same frequency as the resonance frequency band of the first resonance.
  • the isolation between the first antenna and the second antenna increases as the length of the frame between the first position 201 and the third position 203 increases.
  • the length of the frame between the first position 201 and the third position 203 is greater than or equal to half of the first wavelength, additional resonance may be generated, which may interfere with the antenna 220 and affect the radiation characteristics of the antenna 220. Therefore, the length of the border between the first position 201 and the third position 203 needs to be within a reasonable range.
  • the length of the border between the first position 201 and the third position 203 is between one-fifth of the first wavelength. Between one and one-half of the first wavelength.
  • each position in the frame between the first position 201 and the third position 203 is electrically connected to the floor 210, as shown in Figure 18.
  • the electrical length between the first position 201 and the third position 203 can be kept constant, so as to shorten the physical distance between the first position 201 and the third position 203 to achieve miniaturization of the antenna 220 .
  • the antenna 220 may further include a fifth capacitor 245 and a sixth capacitor 246, as shown in FIG. 19 .
  • the fifth capacitor 245 may be connected in series between the frame and the floor 210 at the first location 201 .
  • a sixth capacitor 246 may be connected in series between the bezel and the floor 210 at the third location 203 .
  • the electrical length between the first position 201 and the third position 203 can be kept constant, so as to shorten the physical distance between the first position 201 and the third position 203 to achieve miniaturization of the antenna 220 .
  • the impedance characteristics at the first position 201 and the third position 203 are adjusted, and the isolation between the first antenna unit and the third antenna unit can be further improved.
  • FIG. 20 and 21 are simulation result diagrams of the antenna in the electronic device 200 shown in FIG. 17 .
  • FIG. 20 is the S parameter of the antenna in the electronic device 200 shown in FIG. 17 .
  • FIG. 21 is a simulation result of the isolation degree of the antenna in the electronic device 200 shown in FIG. 17 .
  • the length of the first frame 205 is only 116mm
  • the clearance of the antenna (the distance between the frame 11 and the floor 210) is 3mm
  • the size of the floor 210 is 150mm ⁇ 75mm
  • the distance between the three positions 203 is 14 mm as an example for illustration. In actual design, it can be adjusted, and this application does not limit this.
  • the simulation results of the four-antenna structure shown in Figure 17 are similar to the simulation results of the dual-antenna structure shown in Figure 2, with S Parameters (S11, S22, S33, S44) ⁇ -4 are the limit.
  • the working frequency bands of the four antenna units can include 3.3GHz to 5GHz, and can be applied to the N77, N78 and N79 frequency bands of 5G.
  • the isolation between the four antenna units is greater than -12dB, which meets the application requirements of MIMO systems and can be used in MIMO systems.
  • the disclosed systems, devices and methods can be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined or can be integrated into another system, or some features can be ignored, or not implemented.
  • the coupling or direct coupling or communication connection between each other shown or discussed may be through some interfaces, and the indirect coupling or communication connection between devices or units may be in electrical or other forms.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Support Of Aerials (AREA)

Abstract

Des modes de réalisation de la présente invention concernent un dispositif électronique. Lequel dispositif comprend une antenne utilisant une partie d'un cadre conducteur en tant que radiateur, de telle sorte qu'une pluralité de bandes de fréquence de résonance peuvent être générées tandis que moins d'espaces sont formés dans le cadre, ce qui répond ainsi aux exigences de communication du dispositif électronique. Le dispositif électronique comprend un plancher, un cadre conducteur et une antenne. Le cadre présente une première position et une seconde position, et est mis à la terre au niveau de la première position ; la seconde position est pourvue d'un espace, et un premier cadre entre la première position et la seconde position est utilisé en tant que radiateur d'une antenne. Le premier cadre comprend un premier point de mise à la terre, un premier point d'alimentation et un second point d'alimentation, le premier point d'alimentation étant situé entre le premier point de mise à la terre et la première position ; le second point d'alimentation est situé entre le premier point de mise à la terre et la seconde position ; et une longueur de cadre L1 entre la première position et le premier point de mise à la terre et une longueur de cadre L2 entre la seconde position et le premier point de mise à la terre satisfont : 1,8 ≤ L1/L2 ≤ 2,2.
PCT/CN2023/101033 2022-06-23 2023-06-19 Dispositif électronique WO2023246690A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202210719623.9 2022-06-23
CN202210719623.9A CN117335143A (zh) 2022-06-23 2022-06-23 一种电子设备

Publications (1)

Publication Number Publication Date
WO2023246690A1 true WO2023246690A1 (fr) 2023-12-28

Family

ID=89288926

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2023/101033 WO2023246690A1 (fr) 2022-06-23 2023-06-19 Dispositif électronique

Country Status (2)

Country Link
CN (1) CN117335143A (fr)
WO (1) WO2023246690A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160352014A1 (en) * 2015-05-27 2016-12-01 Hon Hai Precision Industry Co., Ltd. Electronic device and multi-band antenna
CN108321495A (zh) * 2018-01-22 2018-07-24 广东欧珀移动通信有限公司 天线组件、天线装置及电子设备
CN113013593A (zh) * 2021-02-24 2021-06-22 Oppo广东移动通信有限公司 天线组件和电子设备
CN114552181A (zh) * 2022-01-30 2022-05-27 Oppo广东移动通信有限公司 天线组件及电子设备

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160352014A1 (en) * 2015-05-27 2016-12-01 Hon Hai Precision Industry Co., Ltd. Electronic device and multi-band antenna
CN108321495A (zh) * 2018-01-22 2018-07-24 广东欧珀移动通信有限公司 天线组件、天线装置及电子设备
CN113013593A (zh) * 2021-02-24 2021-06-22 Oppo广东移动通信有限公司 天线组件和电子设备
CN114552181A (zh) * 2022-01-30 2022-05-27 Oppo广东移动通信有限公司 天线组件及电子设备

Also Published As

Publication number Publication date
CN117335143A (zh) 2024-01-02

Similar Documents

Publication Publication Date Title
US20230318180A1 (en) Antenna Structure and Electronic Device
WO2021238347A1 (fr) Antenne et dispositif électronique
WO2024051743A1 (fr) Appareil d'antenne et dispositif électronique
WO2023103945A1 (fr) Structure d'antenne et dispositif électronique
CN114824749A (zh) 一种电子设备
WO2023246690A1 (fr) Dispositif électronique
CN114389005B (zh) 一种电子设备
WO2023246694A1 (fr) Dispositif électronique
WO2024046199A1 (fr) Dispositif électronique
WO2024046200A1 (fr) Dispositif électronique
WO2021130844A1 (fr) Dispositif d'antenne et système de mesure
WO2024055870A1 (fr) Structure d'antenne et dispositif électronique
WO2023221876A1 (fr) Dispositif électronique
WO2023185940A1 (fr) Dispositif électronique
WO2024022297A1 (fr) Dispositif électronique
WO2023124887A1 (fr) Structure d'antenne, antenne en boîtier, puce et dispositif électronique
WO2024041357A1 (fr) Système d'antenne et dispositif électronique
WO2023116780A1 (fr) Dispositif électronique
WO2024022281A1 (fr) Dispositif électronique
WO2023016353A1 (fr) Structure d'antenne et dispositif électronique
WO2023221877A1 (fr) Structure d'antenne et dispositif électronique
WO2023082999A1 (fr) Antenne et dispositif électronique
WO2023155648A1 (fr) Structure d'antenne et dispositif électronique
WO2024001837A1 (fr) Dispositif électronique
CN218498380U (zh) 缝隙天线和电子设备

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 23826338

Country of ref document: EP

Kind code of ref document: A1