WO2021129774A1 - 天线单元和电子设备 - Google Patents
天线单元和电子设备 Download PDFInfo
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- WO2021129774A1 WO2021129774A1 PCT/CN2020/139204 CN2020139204W WO2021129774A1 WO 2021129774 A1 WO2021129774 A1 WO 2021129774A1 CN 2020139204 W CN2020139204 W CN 2020139204W WO 2021129774 A1 WO2021129774 A1 WO 2021129774A1
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- radiator
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- cavity
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- 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
- H01Q1/2258—Supports; Mounting means by structural association with other equipment or articles used with computer equipment
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- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
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- 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
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- 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
- H01Q1/526—Electromagnetic shields
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- 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
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- 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
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- 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
- H01Q5/50—Feeding or matching arrangements for broad-band or multi-band operation
Definitions
- the present invention relates to the field of communication, in particular to an antenna unit and electronic equipment.
- the millimeter wave antenna is often in the form of an independent antenna module. It and the existing antennas, such as cellular antennas and non-cellular antennas, are often set separately, which is easier to cause the overall system.
- the increase in volume size has led to a decline in the overall competitiveness of the product.
- the main antenna elements of millimeter wave antenna modules are patch antennas, Yagi-Uda antennas or dipole antennas. These antenna elements are relatively narrowband antennas, such as conventional patches. Generally, the relative bandwidth of the antenna (patch) is basically no more than 8%, and the millimeter wave frequency band often requires a broadband dual-frequency or multi-frequency form, which brings great challenges to the design of the millimeter wave antenna module.
- the current mainstream millimeter wave antenna design schemes mainly use the technology and process of antenna in package (Antenna in package, AiP), that is, the radio frequency integrated circuit (RFIC) of millimeter wave array antenna and The Power Management Integrated Circuit (PMIC) is integrated in a module.
- AiP antenna in package
- RFIC radio frequency integrated circuit
- PMIC Power Management Integrated Circuit
- this module is placed inside the mobile phone, which occupies the space of other antennas at present, resulting in the degradation of antenna performance and the inability to cover wider antennas. Frequency band, thereby affecting the user's wireless experience.
- the present invention provides an antenna unit and electronic equipment to solve the problems of the existing antennas that it is difficult to obtain a good impedance bandwidth, the performance of the antenna to transmit signals is low, and the overall volume is large.
- the present invention adopts the following technical solutions:
- an antenna unit includes: a dielectric layer; a first metal member, the first metal member is provided on the dielectric layer and defines a first metal cavity;
- a second metal piece, the second metal piece defines a second metal cavity, the second metal cavity is located in the first metal cavity, and the first metal piece and the second metal piece are grounded;
- the M power feeding parts are located in the first metal cavity and arranged around the second metal part, and the power feeding parts are insulated from the ground;
- the first radiator is arranged on the dielectric layer
- a second radiator, the second radiator is arranged between the first radiator and the M power feeders;
- the M power feeders are coupled to the first radiator and the second radiator, and M is an integer greater than 1.
- the first metal piece includes:
- a plurality of first metal pillars are arranged at intervals along the edge of the dielectric layer to define the first metal cavity, and the plurality of first metal pillars are all grounded.
- the second metal piece includes:
- a plurality of second metal pillars are provided in the first metal cavity to define the second metal cavity, and the plurality of second metal pillars are all grounded.
- first metal pillar and the second metal pillar are arranged parallel to each other.
- the M power feeders include:
- At least one first power feeder the first power feeder includes a first feeder and a first probe, and the first feeder is connected to the first probe;
- the second feeder includes a second feeder and a second probe, the second feeder is connected to the second probe, the first feeder is connected to the second feeder Respectively coupled to the first radiator and the second radiator;
- the M feeders are located between the second radiator and the second metal cavity, and the projections of the first feeder and the second feeder are respectively at least partially located in the second metal cavity.
- each of the first feeders includes two first feeders and two first probes, each of the first probes is respectively connected to the corresponding first feeder, and each Each of the second feeders includes two second feeders and two second probes, each of the second probes is respectively connected to the corresponding second feeder, and the first The extension directions of the feeder line and the second feeder line are perpendicular and coplanar.
- first probe and the second probe are located outside the second metal cavity, and the first probe, the second probe and the second metal cavity are located at the The first feeder line and the second feeder line are on the same side.
- the first radiator includes:
- At least one first metal sheet the second radiator includes at least one second metal sheet
- the dielectric layer includes a first dielectric layer and a second dielectric layer
- the first metal sheet is disposed on the first dielectric layer
- the second metal sheet is disposed on the second dielectric layer, and the first metal sheet and the second metal sheet are not in contact.
- the cross section of the first metal cavity and the cross section of the second metal cavity are squares respectively, and two diagonal lines of the cross section of the first metal cavity intersect at a first intersection point, The two diagonal lines of the cross section of the second metal cavity intersect at a second intersection point, and the first intersection point and the second intersection point are located on the axis of the first metal cavity.
- an electronic device includes the antenna unit of the above-mentioned embodiment.
- the dielectric layer, the first metal member is disposed on the dielectric layer and defines a first metal cavity
- the second metal member defines a second metal cavity
- the second metal cavity is located at the In the first metal cavity
- the first metal piece and the second metal piece are grounded
- M power feeding parts are located in the first metal cavity and arranged around the second metal piece
- the power feeding parts are insulated from the ground
- the first radiator is provided
- the second radiator is arranged between the first radiator and the M power feeders
- the M power feeders are coupled to the first radiator and the second radiator.
- the second metal cavity is conducive to obtaining a good impedance bandwidth.
- the coupling of the body and the second radiator can generate resonance and improve the performance of the antenna unit.
- the structure of the antenna unit is simple in design, which is beneficial to reduce the overall volume and facilitate miniaturization and integration.
- Figure 1 is a schematic diagram of an existing array antenna
- FIG. 2 is a cross-sectional view of the antenna unit according to the embodiment of the present invention.
- FIG. 3 is a cross-sectional view of the first dielectric layer in the antenna unit of the embodiment of the present invention.
- FIG. 4 is a cross-sectional view of the second dielectric layer in the antenna unit according to the embodiment of the present invention.
- FIG. 5 is a cross-sectional view of the third dielectric layer in the antenna unit according to the embodiment of the present invention.
- FIG. 6 is a cross-sectional view of the fourth dielectric layer in the antenna unit according to the embodiment of the present invention.
- FIG. 7 is a schematic diagram of the reflection coefficient of the antenna unit according to the embodiment of the present invention.
- Fig. 8 is a directional diagram of the antenna unit of the embodiment of the present invention at a frequency of 26 GHz;
- Fig. 9 is a directional diagram of the antenna unit of the embodiment of the present invention at a frequency of 28 GHz;
- FIG. 10 is a directional diagram of the antenna unit of the embodiment of the present invention at a frequency of 39 GHz;
- FIG. 11 is a schematic diagram of an arrangement of antennas according to an embodiment of the present invention.
- the first metal pillar 10 The first metal pillar 10;
- Second metal pillar 20
- First probe 40 second probe 41;
- the antenna unit according to the embodiment of the present invention will be described in detail below.
- the antenna unit includes a dielectric layer, a first metal piece, a second metal piece, M power feeding parts, a first radiator, and a second radiator.
- the dielectric layer may be an insulating material layer
- the first metal member is disposed on the dielectric layer and defines a first metal cavity
- the second metal member defines a second metal cavity
- the second metal cavity is located at the In the first metal cavity
- the first metal piece and the second metal piece are grounded
- M power feeding parts are located in the first metal cavity and arranged around the second metal piece, the power feeding parts are insulated from the ground
- the first radiator is provided In the dielectric layer
- the second radiator is arranged between the first radiator and M feeders, and the M feeders are coupled to the first radiator and the second radiator
- M is an integer greater than 1.
- the antenna unit is mainly composed of a dielectric layer, a first metal piece, a second metal piece, M feeding parts, a first radiator and a second radiator, where the dielectric layer is an insulating material layer or non-metal, For example, it may be an insulating plastic layer or an inorganic non-metallic material layer.
- the first metal piece may be provided on the dielectric layer, and the dielectric layer has a supporting function.
- the first metal piece may define a first metal cavity, and the first metal piece may be
- the metal tube can also be formed by connecting a plurality of metal rods, and the first metal cavity can avoid external interference to the inside of the first metal cavity.
- the second metal piece may define a second metal cavity, the second metal cavity is located in the first metal cavity, the second metal piece may be arranged in the first metal cavity, the second metal piece may be a metal tube, and can also pass through A plurality of metal rods are connected, and the first metal piece and the second metal piece are grounded.
- M power feeders are located in the first metal cavity, M power feeders are arranged around the second metal piece, M power feeders can be located on the same plane, M power feeders are respectively insulated from the ground, and M power feeders
- the part can generate a feed signal.
- the first radiator may be provided on the dielectric layer, the second radiator may be provided between the first radiator and the M power feeders, and at least one of the first radiator and the second radiator may be provided on the first metal Inside the cavity, for example, the second radiator is arranged in the first metal cavity, the first radiator is arranged outside the first metal cavity, and M power feeders are coupled to the first radiator and the second radiator, and M is If it is an integer greater than 1, the coupling between the M feeders and the first radiator and the second radiator can generate resonance, so that the antenna unit can cover more frequency bands, enhance the radiation capability of the antenna, and improve the performance of the antenna unit.
- arranging the feeding part in the first metal cavity can avoid external interference to the signal, and the second metal cavity is conducive to obtaining a good impedance bandwidth, through the feeding part and the first radiator
- the coupling of the second radiator can generate new resonance, enhance the radiation ability of the antenna, and improve the performance of the antenna unit.
- the structure of the antenna unit is simple in design, which is conducive to reducing the overall volume and facilitating miniaturization and integration.
- the first metal member may include a plurality of first metal pillars 10, and the plurality of first metal pillars 10 may be arranged at intervals along the edge of the dielectric layer to define The first metal cavity, the plurality of first metal pillars 10 are all grounded, the entire first metal cavity may be columnar, the plurality of first metal pillars 10 may be arranged parallel to each other, and the plurality of first metal pillars 10 may be along the dielectric layer. The edges of the dielectric layer are evenly spaced.
- a plurality of through holes can be evenly spaced on the edge of the dielectric layer, and each first metal pillar 10 is inserted into the corresponding through hole, and then passes through the plurality of first metal pillars 10 Defining the first metal cavity, and using the first metal pillar 10 to define the first metal cavity can reduce the amount of metal material and the weight, reduce the cost, and be beneficial to lightness.
- the second metal member may include a plurality of second metal pillars 20, and the plurality of second metal pillars 20 may be provided in the first metal cavity to A second metal cavity is defined, and the plurality of second metal pillars 20 are all grounded.
- a plurality of second metal pillars 20 may also be arranged on the dielectric layer, and the plurality of second metal pillars 20 may be arranged parallel to each other.
- the first metal pillars 10 and the second metal pillars 20 may be arranged parallel to each other, and the first metal pillars 20 may be arranged parallel to each other.
- the pillar 10 and the second metal pillar 20 may be parallel to the axis of the first metal cavity.
- a plane perpendicular to the second metal pillar 20 may be used as the first plane, and the projections of the M power feeding parts on the first plane may be located on the projections of the second metal cavity on the first plane.
- the second metal cavity defined by the second metal pillar 20 can obtain a good impedance bandwidth, and at the same time, reduce the amount and weight of metal materials, reduce costs, and be beneficial to lightness.
- the second metal cavity is located inside the first metal cavity. , Does not occupy additional space, is conducive to the miniaturization of the antenna unit, and is convenient for processing.
- the M power feeders include at least one first power feeder and at least one second power feeder.
- the M power feeders may include a first power feeder and a second power feeder.
- the feeder, the first feeder includes a first feeder 30 and a first probe 40, the first feeder 30 is connected to the first probe 40, and the second feeder includes a second feeder 31 and a second probe 41,
- the second feeder 31 is connected to the second probe 41, the first feeder 30 and the second feeder 31 are respectively coupled to the first radiator and the second radiator;
- M feeders are located in the second radiator and the second metal cavity Between the bodies, the projections of the first feeder 30 and the second feeder 31 are respectively at least partially located in the second metal cavity.
- the first feeder 30 and the second feeder 31 can be respectively L-shaped coupled feeders, which is beneficial to reduce the size of the antenna.
- the feed signal can be transmitted to the first feeder 30 through the first probe 40, and the feeder signal can be transmitted to the first feeder 30 through the second probe 41
- the second feeder 31 transmits the feed signal.
- the first feeder 30 and the second feeder 31 are coupled to the first radiator and the second radiator respectively, which can generate resonance, so that the antenna unit can cover more frequency bands and enhance the antenna’s performance. Radiation ability.
- each first feeder may include two first feeders 30 and two first probes 40, and the two first feeders 30 may be arranged opposite to each other, and each first probe 40 is respectively connected to
- each second feeder may include two second feeders 31 and two second probes 41, and the two second feeders 31 may be arranged opposite to each other, and each second probe 41 is respectively Connected to the corresponding second feeder 31.
- the extension directions of the first feeder 30 and the second feeder 31 are perpendicular and coplanar, which is conducive to generating orthogonal polarization.
- the first feeder 30 and the second feeder 31 are respectively connected to the first radiator. , The second radiator is coupled and connected.
- the first probe 40 and the second probe 41 are located outside the second metal cavity, and the first probe 40, the second probe 41 and the second metal cavity are located on the same side of the first feeder 30 and the second feeder 31 , To avoid the interference of the first probe 40 and the second probe 41 on signal transmission or radiation, and avoid the first probe 40 and the second probe 41 from resonating or polarizing the first feeder 30 and the second feeder 31 .
- the two first feeders 30 form a pair of +45° polarized feeds, and the amplitudes of the signal sources connected to the two first feeders 30 are equal,
- the phase difference is 180°, so that the two second feeders 31 form a -45° polarized feed, the amplitudes of the signal sources connected to the two second feeders 31 are also equal, and the phases are also 180° apart.
- the first radiator includes at least one first metal sheet 52
- the second radiator includes at least one second metal sheet 51, for example, the first metal sheet 52 and the second metal sheet 52.
- the dielectric layer may include a first dielectric layer 61 and a second dielectric layer 62
- the first metal sheet 52 is provided on the first dielectric layer 61
- the second metal sheet 51 is provided on the second dielectric layer 62
- the first metal sheet 52 and the second metal sheet 51 are not in contact
- the first feeder line 30 and the second feeder line 31 are coupled to the first metal sheet 52 and the second metal sheet 51 respectively, which is beneficial to generate resonance and enhance the radiation ability of the antenna .
- the first metal sheet 52 and the second metal sheet 51 may each have one, the first metal sheet 52 and the second metal sheet 51 may be spaced apart along the axis of the first metal cavity, and the first metal sheet 52 and the second metal sheet 52 may be spaced apart from each other along the axis of the first metal cavity.
- the planes of the two metal sheets 51 are respectively perpendicular to the axis of the first metal cavity, that is, the first metal sheet 52 and the second metal sheet 51 may be perpendicular to the first metal pillar 10 and the second metal pillar 20 respectively.
- At least one of the first metal sheet 52 and the second metal sheet 51 may be located in the first metal cavity, and the first metal sheet 52 and the second metal sheet 51 may be coupled to the first feeder line 30 and the second feeder line 31, respectively.
- Two resonances of low frequency or high frequency are generated, so that the antenna unit can cover more frequency bands, enhance the radiation ability of the antenna, and improve the mobile roaming experience of different users.
- the cross section of the first metal cavity and the cross section of the second metal cavity are squares respectively, and the two diagonal lines of the cross section of the first metal cavity intersect at the first intersection point, The two diagonal lines of the cross section of the second metal cavity intersect at the second intersection point, and the first intersection point and the second intersection point are located on the axis of the first metal cavity, so that good impedance can be obtained through the second metal cavity bandwidth.
- the first diagonal line of the cross section of the first metal cavity may be perpendicular to the two mutually parallel sides of the cross section of the second metal cavity, and the second line of the cross section of the first metal cavity is opposite to each other.
- the angle line may be perpendicular to the other two parallel sides of the cross section of the second metal cavity, which is beneficial for generating uniform and symmetrical resonance.
- the axes of the first metal cavity, the second metal cavity, the first metal sheet 52, and the second metal sheet 51 may be collinear, so that the entire antenna unit is symmetrical, which is beneficial for the metal sheet in the first metal cavity.
- a uniform and symmetrical resonance is generated between the first feeder line 30 and the second feeder line 31 in the chamber.
- the first radiator includes a first metal sheet 52
- the second radiator includes a second metal sheet 51.
- Low frequency can be generated between the first feeder 30, the second feeder 31 and the second metal sheet 51.
- the introduction of the first metal sheet 52 can generate new resonances at high frequencies, further increasing the frequency band of the antenna unit.
- Fig. 7 is a schematic diagram of the reflection coefficient of the antenna unit according to the embodiment of the present invention.
- the coordinates of point 1 are (24.033, -9.9954)
- the coordinates of point 2 are (29.987, -10.026)
- the coordinates of point 3 are (42.249,- 9.9974)
- the coordinates of point 4 are (43.163, -6.0552), and it can be seen from the frequency range in FIG.
- the antenna unit in the embodiment of the present invention has a wider frequency band range. Due to the introduction of the L-shaped coupling feeder and the metal sheet, the antenna unit generates multiple resonance points, which can well cover the 24GHz-42GHz frequency band, basically covering n257 (26.5GHz-29.5GHz), n258 (24.25GHz-27.5GHz) , N260 (37.0GHz-40.0GHz), n261 (27.5GHz-28.35GHz) and other global mainstream 5G millimeter wave frequency bands that have been defined by 3GPP, thereby enhancing the user's mobile roaming experience.
- a pattern of the antenna unit of the embodiment of the present invention at a frequency of 26 GHz may be as shown in FIG. 8.
- frequency (Frequency) 26 GHz
- main lobe maximum gain 4.71 dB
- main lobe direction 0.0 deg
- 3 dB beam width Angular width
- negative lobe level side lobe level
- -14.0 dB the antenna unit of the embodiment of the present invention is at a frequency of 28 GHz
- a directional pattern can be shown in Figure 9.
- frequency (Frequency) 28GHz
- main lobe maximum gain (Main lobe magnitude) 5.26dB
- main lobe direction (Main lobe direction) 0.0deg
- 3dB beam Angular width 79.8 deg
- side lobe level -15.2 dB
- a pattern of the antenna unit of the embodiment of the present invention at a frequency of 39 GHz may be as shown in FIG. 10.
- Using a symmetrical differential orthogonal feed method for the same antenna unit can form a Multiple-Input Multiple-Output (MIMO) function, which can increase the data transmission rate, and can also form a dual polarization to increase the antenna’s power.
- MIMO Multiple-Input Multiple-Output
- the wireless connection capability reduces the probability of communication disconnection, and improves the communication effect and user experience; in addition, it can significantly improve the isolation between ports and reduce the coupling between antenna units, thereby increasing the overall system efficiency and improving the beamforming characteristics of the array antenna .
- the dielectric layer may include one or more layers.
- the dielectric layer may include a first dielectric layer 61, a second dielectric layer 62, and a third dielectric layer 63.
- the fourth dielectric layer 64, the first dielectric layer 61, the second dielectric layer 62, the third dielectric layer 63, and the fourth dielectric layer 64 can be arranged sequentially from top to bottom, and the size and shape of the four dielectric layers can be the same.
- the plurality of first metal pillars 10 may respectively penetrate the four dielectric layers, and the plurality of first metal pillars 10 may be spaced apart along the edges of the four dielectric layers to define a first metal cavity.
- the plurality of first metal pillars 10 are mutually Parallel setting.
- a first metal sheet 52 may be provided on the upper surface of the first dielectric layer 61
- a second metal sheet 51 may be provided on the upper surface of the second dielectric layer 62
- the first feeder 30 and the second feeder may be provided on the upper surface of the third dielectric layer 63 31.
- the second metal pillar 20 is disposed on the fourth dielectric layer 64
- the first probe 40 penetrates the third dielectric layer 63 and the fourth dielectric layer 64 to connect to the first feeder
- the second probe 41 penetrates the third dielectric layer 63 and the fourth dielectric layer 64 are connected to the second feeder 31, and the structure in the antenna unit can be supported by the dielectric layer without causing interference.
- the laminated structure is simple and the processing difficulty is reduced.
- PCB printed circuit board
- substrate processing technology or LTCC low temperature co-fired ceramic
- An embodiment of the present invention also provides an antenna, and the antenna includes the antenna unit described in the foregoing embodiment.
- the antenna can include one or more antenna elements. When there are multiple antenna elements, the antenna elements can be arranged in an array. As shown in Figure 11, the four antenna elements can be arranged in an array, and each antenna element can be arranged in an array. A certain separation distance, the separation distance can be determined according to the isolation between the antenna elements and the performance of the scanning angle of the array.
- a ground wall can be formed by punching around each antenna unit, and the ground wall encloses a cavity structure to improve the isolation between adjacent antenna units.
- the antenna with the antenna unit has strong anti-interference performance, is beneficial to obtain a good impedance bandwidth, improves the performance of the antenna, is suitable for signals in a variety of frequency bands, is beneficial to reduce the overall volume, and facilitates miniaturization.
- An embodiment of the present invention also provides an electronic device, and the electronic device includes the antenna unit described in the foregoing embodiment.
- the electronic device with the antenna unit has good antenna performance, strong signal transmission and reception capabilities, and is suitable for signals in multiple frequency bands, which is conducive to the miniaturization of electronic devices and enhances the user's mobile roaming experience.
- the antenna unit in the embodiment of the present invention can be applied to wireless intercity network (WMAN), wireless wide area network (WWAN), wireless local area network (WLAN), wireless personal network (WPAN), multiple input multiple output (MIMO) , Radio frequency identification (RFID), even near field communication (NFC), wireless charging (WPC) or frequency modulation broadcasting (FM) and other wireless communication design and application.
- WMAN wireless intercity network
- WWAN wireless wide area network
- WLAN wireless local area network
- WPAN wireless personal network
- MIMO multiple input multiple output
- RFID Radio frequency identification
- NFC near field communication
- WPC wireless charging
- FM frequency modulation broadcasting
- the antenna unit in the embodiment of the present invention can be applied not only to mobile electronic devices (such as mobile phones), but also to electromagnetic wave absorption rate (Specific Absorption Rate, SAR) or hearing aid compatibility (Hearing Aid Compatibility, HAC). Compatibility testing of devices (such as hearing aids or heart rate regulators, etc.) and actual design applications.
- mobile electronic devices such as mobile phones
- electromagnetic wave absorption rate Specific Absorption Rate, SAR
- hearing aid compatibility Hearing Aid Compatibility, HAC.
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Abstract
Description
Claims (10)
- 一种天线单元,包括:介质层;第一金属件,所述第一金属件设在所述介质层且限定出第一金属腔体;第二金属件,所述第二金属件限定出第二金属腔体,所述第二金属腔***于所述第一金属腔体内,所述第一金属件和所述第二金属件接地;M个馈电部,所述M个馈电部位于所述第一金属腔体内,且围绕所述第二金属件设置,所述馈电部与地绝缘;第一辐射体,设于所述介质层;第二辐射体,所述第二辐射体设于所述第一辐射体与所述M个馈电部之间;所述M个馈电部与所述第一辐射体、所述第二辐射体耦合连接,M为大于1的整数。
- 根据权利要求1所述的天线单元,其中,所述第一金属件包括:多个第一金属柱,多个所述第一金属柱沿所述介质层的边沿间隔设置以限定出所述第一金属腔体,多个所述第一金属柱均接地。
- 根据权利要求2所述的天线单元,其中,所述第二金属件包括:多个第二金属柱,多个所述第二金属柱设在所述第一金属腔体中以限定出所述第二金属腔体,多个所述第二金属柱均接地。
- 根据权利要求3所述的天线单元,其中,所述第一金属柱和所述第二金属柱相互平行设置。
- 根据权利要求1所述的天线单元,其中,所述M个馈电部包括:至少一个第一馈电部,所述第一馈电部包括第一馈线和第一探针,所述第一馈线与所述第一探针连接;至少一个第二馈电部,所述第二馈电部包括第二馈线和第二探针,所述第二馈线与所述第二探针连接,所述第一馈线与所述第二馈线分别和所述第一辐射体、所述第二辐射体耦合连接;所述M个馈电部位于所述第二辐射体与所述第二金属腔体之间,所述第 一馈线与所述第二馈线的投影分别至少部分位于所述第二金属腔体内。
- 根据权利要求5所述的天线单元,其中,每个所述第一馈电部包括两个所述第一馈线和两个所述第一探针,每个所述第一探针分别连接在对应的所述第一馈线上,每个所述第二馈电部包括两个所述第二馈线和两个所述第二探针,每个所述第二探针分别连接在对应的所述第二馈线上,所述第一馈线和所述第二馈线的延伸方向垂直且共面。
- 根据权利要求5所述的天线单元,其中,所述第一探针和所述第二探针位于所述第二金属腔体的外部,且所述第一探针、所述第二探针和所述第二金属腔***于所述第一馈线与所述第二馈线的同一侧。
- 根据权利要求1所述的天线单元,其中,所述第一辐射体包括至少一个第一金属片,所述第二辐射体包括至少一个第二金属片,所述介质层包括第一介质层和第二介质层,所述第一金属片设在所述第一介质层上,所述第二金属片设在所述第二介质层上,且所述第一金属片与所述第二金属片未接触。
- 根据权利要求5所述的天线单元,其中,所述第一金属腔体的横截面与所述第二金属腔体的横截面分别为四方形,所述第一金属腔体的横截面的两条对角线相交于第一交点,所述第二金属腔体的横截面的两条对角线相交于第二交点,所述第一交点与所述第二交点位于所述第一金属腔体的轴线上。
- 一种电子设备,包括如权利要求1-9中任一项所述的天线单元。
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