CN114784511A - Antenna device and terminal equipment - Google Patents

Antenna device and terminal equipment Download PDF

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Publication number
CN114784511A
CN114784511A CN202210336059.2A CN202210336059A CN114784511A CN 114784511 A CN114784511 A CN 114784511A CN 202210336059 A CN202210336059 A CN 202210336059A CN 114784511 A CN114784511 A CN 114784511A
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China
Prior art keywords
branch
edge
side edge
antenna
distance
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CN202210336059.2A
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Chinese (zh)
Inventor
马晓娜
王虎
郭湘荣
郑江伟
陈仁庆
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Hisense Mobile Communications Technology Co Ltd
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Hisense Mobile Communications Technology Co Ltd
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Priority to CN202210336059.2A priority Critical patent/CN114784511A/en
Publication of CN114784511A publication Critical patent/CN114784511A/en
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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
    • 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
    • H01Q1/243—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 with built-in antennas
    • 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
    • H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
    • 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
    • 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
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
    • H01Q5/25—Ultra-wideband [UWB] systems, e.g. multiple resonance systems; Pulse 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
    • H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
    • H01Q5/28—Arrangements for establishing polarisation or beam width over two or more different wavebands

Abstract

The invention relates to the field of Printed Circuit Board (PCB) antennas, and discloses an antenna device and terminal equipment. The antenna device comprises a substrate, a first antenna and a second antenna, wherein the substrate is provided with a first plate edge; the grounding metal layer is provided with a plurality of clearance areas; the antenna bodies are in one-to-one correspondence with the clearance areas and are in feed connection with the grounding metal layer; the antenna body comprises a first branch and a second branch, the first branch is parallel to the first plate edge, and the second branch is parallel to the first plate edgeThe branch knots are vertical to the first plate edge; a first gap is formed between the first branch knot and the fourth side edge, a second gap is formed between the first branch knot and the first plate edge, a third gap is formed between the second branch knot and the second side edge, and a fourth gap is formed between the second branch knot and the first side edge; the distance between the seventh side edge and the first side edge is L17The distance between one end of the first branch knot far away from the first side edge and the first side edge is L11The distance between the fifth side edge and the first side edge is L15，L17＜L11＜L15. The invention can realize the bandwidth requirement, and the antenna efficiency and isolation meet the standard requirement.

Description

Antenna device and terminal equipment
Technical Field
The invention relates to the technical field of Printed Circuit Board (PCB) antennas, in particular to an antenna device and terminal equipment.
Background
The working frequency band of the WiFi6E module is 2.4GHz-2.5GHz and 5.1GHz-7.2GHz, the bandwidth of the high frequency band reaches 2.1GHz, and for a planar printed antenna on a PCB module, the common antenna design is difficult to meet the bandwidth requirement. Because the working frequency band of the WiFi6E antenna is very wide, the general WiFi6E antenna design all adopts the external antenna mode, but if the external antenna is adopted, the antenna is high in price, large in occupied space and poor in universality.
Disclosure of Invention
The invention discloses an antenna device and terminal equipment, which can meet the bandwidth requirements of a WiFi6E ultra-wideband antenna and a BT dual-frequency antenna, and the antenna efficiency and isolation meet the standard requirements of use.
In order to achieve the purpose, the invention provides the following technical scheme:
in a first aspect, the present invention provides an antenna device comprising:
a substrate having a first plate edge;
a ground metal layer printed on the substrate, the ground metal layer being formed with a plurality of clearance areas; the clearance area comprises a first side edge, a second side edge, a third side edge, a fourth side edge, a fifth side edge, a sixth side edge and a seventh side edge which are sequentially connected, and an opening of the clearance area faces the first plate edge; the first side edge, the third side edge, the fifth side edge and the seventh side edge are all perpendicular to the first plate edge, and the second side edge, the fourth side edge and the sixth side edge are all parallel to the first plate edge;
the antenna bodies are in one-to-one correspondence to the clearance areas and are in feed connection with the grounding metal layer; the antenna body comprises a first branch and a second branch, the first branch is parallel to the first plate edge, the second branch is perpendicular to the first plate edge, and the second branch is located on one side, close to the first side, of the first branch; a first gap is formed between the first branch knot and the fourth side edge, a second gap is formed between the first branch knot and the first plate edge, a third gap is formed between the second branch knot and the second side edge, and a fourth gap is formed between the second branch knot and the first side edge; the distance between the seventh side edge and the first side edge is L17The distance between one end of the first branch knot, far away from the first side edge, and the first side edge is L11The distance between the fifth side edge and the first side edge is L15，L17＜L11＜L15。
The antenna device is printed on the substrate such as a PCB, so that the design cost is low, the consistency is high, and the space required by design is small. A gap between the antenna body and the grounding metal layer forms a capacitance effect, so that the working bandwidth of the antenna can be effectively improved. The first branch of the antenna body is perpendicular to the second branch, and the current path of the first branch is perpendicular to the current path of the second branch to form a closed-loop current loop. The width of the first gap influences the bandwidth width of the WiFi6E frequency band; the width of the second gap has great influence on the working frequency of Bluetooth 2.4GHz and WiFi6E, and the closer the distance from the first plate edge is, the lower the resonance is; the width of the third slot affects the current strength between the feed and ground, and thus the resonant depth of the antenna; in addition, a current loop in the third slot forms coupling current to influence the bandwidth of the antenna; the fourth gap can excite a current loop to form a strong electromagnetic field environment, and is important for the performance radiation of the antenna. The first branch knot is far away from one end of the first side edge, namely the distance L between the tail end of the first branch knot and the first side edge11Is greater than the distance L between the seventh side edge and the first side edge17First, aThe strong current distribution at the tail end of the branch can strengthen the coupling between the feed and the ground and enhance the radiation performance of the antenna, the electric field intensity of the antenna body at the tail end of the branch is stronger, and the coupling of the strong current can excite the resonance depth and the radiation efficiency of the antenna. According to the embodiment of the invention, the antenna design is carried out on the substrate such as a PCB, so that the bandwidth requirements of the WiFi6E ultra-wideband antenna and the BT dual-frequency antenna are met, and the antenna efficiency and isolation meet the standard requirements of use.
In some embodiments, the fourth gap is less than 1.5 mm.
In some embodiments, at least two of the antenna bodies are symmetrically disposed, and the symmetry axis is parallel or perpendicular to the first board edge.
In some embodiments, the distance between the second side edge and the first plate edge is D12The distance between the fourth side edge and the first plate edge is D14The distance between the sixth side edge and the first plate edge is D16，D12＞D14＞D16。
In some embodiments, the antenna body further includes a third branch parallel to the second branch, the third branch is connected to one end of the first branch, which is far away from the second branch, and the third branch and the second branch are located on the same side of the first branch.
In some embodiments, the antenna body further includes a fourth branch parallel to the first branch, and the fourth branch is connected to one end of the second branch, which is far away from the first branch.
In some embodiments, the clearance area further comprises an eighth side and a ninth side between the third side and the fourth side, and an end of the eighth side away from the third side is connected to the ninth side; the eighth side edge is parallel to the first plate edge, and the ninth side edge is perpendicular to the first plate edge;
the distance between the third side edge and the first side edge is L13The distance between the ninth side and the first side is L19，L13＞L19。
In some embodiments, the plurality of clearance areas formed by the grounding metal layer at least comprises: a first clearance region and a second clearance region, a third gap in the first clearance region being smaller than a third gap in the second clearance region.
In some embodiments, the clearance area further comprises a tenth side, an eleventh side, a twelfth side and a thirteenth side which are located between the second side and the third side and are connected in sequence, the tenth side and the twelfth side are both perpendicular to the first board edge, and the eleventh side and the thirteenth side are both parallel to the first board edge; a fifth gap is formed between the second branch knot and the eleventh side edge;
the distance between the tenth side edge and the first side edge is L110The distance between the twelfth side edge and the first side edge is L112The distance between the third side edge and the first side edge is L13，L110＜L112＜L13。
In a second aspect, the present invention also provides a terminal device, including the antenna apparatus according to any one of the first aspect.
Drawings
Fig. 1 is a schematic structural diagram of an antenna device according to an embodiment of the present invention;
fig. 2 is a schematic diagram of the headroom region in fig. 1;
fig. 3 is a schematic view of gaps between the antenna body and the ground metal layer in fig. 1;
FIG. 4 is a schematic diagram of a current path of the antenna apparatus of FIG. 1;
fig. 5 is a schematic return loss diagram of an antenna apparatus according to an embodiment of the present invention;
fig. 6 is a schematic diagram illustrating simulation of a 2.45GHz antenna radiation loop of an antenna apparatus according to an embodiment of the present invention;
fig. 7 is a schematic diagram illustrating a simulation of a 5.75GHz antenna radiation loop of an antenna apparatus according to an embodiment of the present invention;
fig. 8 is a schematic diagram illustrating simulation of a 7GHz antenna radiation loop of an antenna apparatus according to an embodiment of the present invention;
fig. 9 is a schematic diagram illustrating isolation between two antennas in an antenna apparatus according to an embodiment of the present invention;
fig. 10a to fig. 10c are schematic structural diagrams of another antenna device according to an embodiment of the present invention;
fig. 11a to fig. 11c are schematic structural diagrams of another antenna device according to an embodiment of the present invention;
fig. 12a to 12c are schematic structural diagrams of another antenna device according to an embodiment of the present invention;
fig. 13a to 13c are schematic structural diagrams of another antenna device according to an embodiment of the present invention;
fig. 14a to fig. 14c are schematic structural diagrams of another antenna device according to an embodiment of the present invention.
Icon: 100-a substrate; 200-a ground metal layer; 300-an antenna body; 400-headroom region; 500-a feed point; 110-first plate edges; 120-second plate edges; 210-first ground branch knot; 220-second ground branch node; 230-third branch knot; 240-metal ground; 250-fourth branch knot; 260-fifth branch knot; 270-sixth branch; 310-first branch; 320-second branch knot; 330-third branch; 340-fourth branch knot; 401-a first side; 402-a second side edge; 403-a third side; 404-fourth side; 405-fifth side; 406-sixth side; 407-seventh side; 408-eighth side; 409-ninth side; 410-tenth side; 411-eleventh side; 412-twelfth side; 413-thirteenth side.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, an embodiment of the present invention provides an antenna apparatus, including:
a substrate 100, the substrate 100 having a first plate edge 110;
a ground metal layer 200 printed on the substrate 100, the ground metal layer 200 having a plurality of clearance areas 400 formed thereon; the clearance area 400 comprises a first side 401, a second side 402, a third side 403, a fourth side 404, a fifth side 405, a sixth side 406 and a seventh side 407 which are connected in sequence, and the opening of the clearance area 400 faces the first board side 110; the first side 401, the third side 403, the fifth side 405, and the seventh side 407 are perpendicular to the first plate edge 110, and the second side 402, the fourth side 404, and the sixth side 406 are parallel to the first plate edge 110;
the antenna bodies 300 are in one-to-one correspondence with the clearance areas 400, and the antenna bodies 300 are in feed connection with the grounding metal layer 200; the antenna body 300 includes a first branch 310 and a second branch 320, the first branch 310 is parallel to the first board edge 110, the second branch 320 is perpendicular to the first board edge 110, and the second branch 320 is located on one side of the first branch 310 close to the first side 401; a first gap H is formed between the first branch 310 and the fourth side 4041A second gap H is formed between the first branch 310 and the first plate edge 1102A third gap H is formed between the second branch node 320 and the second side edge 4023A fourth gap H is formed between the second branch 320 and the first side 4014(ii) a The distance between the seventh side 407 and the first side 401 is L17The distance between the end of the first branch 310 away from the first side 401 and the first side 401 is L11The distance between the fifth side 405 and the first side 401 is L15，L17＜L11＜L15。
The antenna device adopts the printed antenna on the substrate 100 such as a PCB, and has the advantages of low design cost, high consistency and small space required by design. The gap between the antenna body 300 and the ground metal layer 200 forms a capacitance effect, which can effectively improve the working bandwidth of the antenna. The first branch 310 of the antenna body 300 is perpendicular to the second branch 320, and the current path of the first branch 310 is perpendicular to the current path of the second branch 320, so as to form a closed-loop current loop. First gap H1The width of (a) affects the bandwidth width of the WiFi6E frequency band; second gap H2Width of (C) for Bluetooth 2.4GHz and WiFi6EThe working frequencies are greatly influenced, and the closer the distance between the first plate edge 110 and the resonance is, the lower the resonance is; third gap H3The width of (c) affects the current strength between the feed and ground, and thus the resonant depth of the antenna; and, the third gap H3The inner current loop forms coupling current to influence the bandwidth of the antenna; fourth gap H4The current loop can be excited to form a strong electromagnetic field environment, and the electromagnetic field environment is important for the performance radiation of the antenna. The first branch 310 is far away from the first side 401, i.e. the distance L between the end of the first branch 310 and the first side 40111Is greater than the distance L between the seventh side 407 and the first side 40117The strong current distribution at the end of the first branch 310 can strengthen the coupling between the feed and the ground, enhance the radiation performance of the antenna, and the electric field intensity of the antenna body 300 at the end of the branch is stronger, and the coupling of the strong current can excite the resonance depth and the radiation efficiency of the antenna. According to the embodiment of the invention, the antenna design is carried out on the substrate 100 such as a PCB, so that the bandwidth requirements of the WiFi6E ultra-wideband antenna and the BT dual-band antenna are met, and the antenna efficiency and isolation meet the standard requirements of use.
In one possible implementation, referring to fig. 2, the substrate 100 includes a first plate edge 110 and a second plate edge 120 that are vertically connected, the second plate edge 120 extends along the X direction, and the first plate edge 110 extends along the Y direction. The ground metal layer 200 includes a first ground branch 210, a second ground branch 220, a third ground branch 230 and a metal ground 240, the third ground branch 230 is T-shaped, a portion of the third ground branch 230 extending along the Y direction is directly connected to the metal ground 240, and a portion of the third ground branch 230 extending along the X direction is connected to the second ground branch 220; the second ground branch 220 is a rectangle extending along the X direction, and the second ground branch 220 is located on one side of the third branch 330 away from the metal ground 240; the first branch 210 is a rectangle extending along the Y direction, and the first branch 310 is connected to two ends of the second branch 320. The first ground branch 210, the second ground branch 220, the third ground branch 230, and the metal ground 240 are formed with a clearance area 400 opening toward the first board edge 110 on a side close to the first board edge 110, that is, the left clearance area 400 in fig. 2. An antenna body 300 is formed in the clearance area 400, and the antenna body 300 includes a first branch 310 and a second branch connected verticallyAnd the node 320, the second branch node 320 is located at one side of the first branch node 310 close to the metal ground 240. The first branch 310 is connected to the feeding point 500, and the second branch 320 is connected to the feeding point 500. Illustratively, the first branch 310 and the second branch 320 share a feed point 500. A first gap H is formed between the first branch 310 and the third branch 2301A second gap H is formed between the first branch 310 and the first plate edge 1102A third gap H is formed between the second branch node 320 and the third branch node 2303A fourth gap H is formed between the second branch 320 and the metal ground 2404。
In some embodiments, the fourth gap H4Less than 1.5 mm.
In some embodiments, at least two antenna bodies 300 are symmetrically disposed, and the symmetry axis is parallel or perpendicular to the first board edge 110.
In one possible implementation, the two antenna bodies 300 in fig. 2 are designed axisymmetrically with respect to a straight line AA, where the straight line AA is parallel to the first board edge 110. It should be noted that the embodiment of the present invention is not limited to a symmetric design, nor to a dual-antenna design, i.e., two antenna bodies 300, and the embodiment of the present invention may be a multi-antenna design with more than two antennas.
In some embodiments, there is an overlapping region between the first branch 310 and the first ground branch 210 in the Y direction, the end of the first branch 310 is higher than the end of the first ground branch 210, and a strong current distribution at the end of the first branch 310 may enhance the coupling between the feed and the ground, and enhance the radiation performance of the antenna; the current loop between the end length of the second stub 320 and the third stub 230 forms a coupling current, which affects the bandwidth of the antenna.
In a possible implementation manner, referring to fig. 3, the distance between the seventh side 407 and the first side 401 is L17The distance between the end of the first branch 310 away from the first side 401 and the first side 401 is L11The distance between the fifth side 405 and the first side 401 is L15The distance between the third side 403 and the first side 401 is L13，L13＜L17＜L11＜L15。
In some embodiments, with continued reference to FIG. 3,the distance between the second side edge 402 and the first plate edge 110 is D12The distance between the fourth side 404 and the first plate edge 110 is D14The distance between the sixth side 406 and the first board edge 110 is D16，D12＞D14＞D16。
In some embodiments, the first branch 310 is perpendicular to the second branch 320 in the antenna body 300, and the current path on the first branch 310 is perpendicular to the current path on the second branch 320, so as to form a closed-loop current loop, as shown in fig. 4.
In a possible implementation, the return loss of the antenna device is shown in fig. 5, where the abscissa represents frequency in GHz and the ordinate represents S-parameter in dB. It can be seen that the antenna has resonance at 2.4GHz-2.5GHz and 5.1GHz-7.2GHz, and the antenna meets the bandwidth of 2.1GHz at the frequency band of 5.1GHz-7.2GHz, and exceeds the requirement of the bandwidth.
As shown in fig. 6, an antenna radiation loop between 2.45GHz, i.e., 2.4GHz-2.5GHz, is formed between the second branch 320 and the third branch 230. As shown in fig. 7-8, the embodiments of the present invention form multiple antenna radiation loops above 5GHz, thereby widening the antenna bandwidth. Specifically, fig. 7 shows a 5.75GHz antenna radiation loop, and fig. 8 shows a 7GHz antenna radiation loop.
The isolation between the two antennas is shown in fig. 9, where the abscissa represents frequency in GHz and the ordinate represents isolation in dB. Meanwhile, the two antennas also have better isolation, the isolation is less than-20 dB, and the performance of the two antennas is not lower than that of an external antenna. Illustratively, the isolation S2,1 of the two antennas is about-53 dB at 7.3 GHz.
Therefore, the embodiment of the invention has the advantages that the design of the antenna is printed on the PCB, the design cost is low, the space required by the design is small, the requirement of 2.1GHz antenna bandwidth is realized, and the antenna efficiency and the isolation meet the standard requirements of use.
In some embodiments, the antenna body 300 further includes a third branch 330 parallel to the second branch 320, the third branch 330 is connected to one end of the first branch 310 away from the second branch 320, and the third branch 330 and the second branch 320 are located on the same side of the first branch 310.
In a possible implementation manner, referring to fig. 10a, a third branch 330 is connected to an end of the first branch 310, that is, an end of the first branch 310 away from the second branch 320, the third branch 330 is parallel to the second branch 320, and the third branch 330 is located at a side of the first branch 310 away from the first board edge 110, that is, a right side of the first branch 310 in fig. 10 a. The length of the third branch 330 along the X direction is less than the length of the second branch 320 along the X direction, and the length of the third branch 330 along the Y direction is less than the length of the second branch 320 along the Y direction. The gap formed between the third branch 330 and the fourth side 404 is labeled as H1 ’. First gap H1The width of (a) affects the bandwidth width of the WiFi6E frequency band; second gap H2The width of the first plate has great influence on the working frequency of Bluetooth 2.4GHz and WiFi6E, and the closer the distance between the first plate and the first plate edge 110 is, the lower the resonance is; third gap H3The width of (a) will affect the current strength between the feed and ground, and thus the resonant depth of the antenna; and, a third slit H3The inner current loop forms coupling current to influence the bandwidth of the antenna; fourth gap H4The current loop can be excited to form a strong electromagnetic field environment, which is important for the performance radiation of the antenna. Referring to FIG. 10b, the distance between the seventh side 407 and the first side 401 is L17The distance between the end of the first branch 310 away from the first side 401 and the first side 401 is L11The distance between the fifth side 405 and the first side 401 is L15The distance between the third side 403 and the first side 401 is L13，L13＜L17＜L11＜L15. The distance between the second side edge 402 and the first plate edge 110 is D12The distance between the fourth side 404 and the first board edge 110 is D14The distance between the sixth side 406 and the first board edge 110 is D16，D12＞D14＞D16. Fig. 10c is a schematic diagram illustrating the current path of the antenna, and it can be seen that the addition of the third branch 330 physically changes the current loop path of the antenna, and the strong current between the third branch 330 and the ground metal layer 200 can be excited by optimizing the position and the gap width between the third branch 330 and the ground metal layer 200, and can be applied to the substrate100, for example, when the width of the PCB is limited and the size is reduced, the current loop path is changed by adding a new radiating branch, i.e., the third branch 330, so as to optimize the frequency resonance position and the radiation intensity of the antenna.
In some embodiments, the antenna body 300 further includes a fourth branch 340 parallel to the first branch 310, and the fourth branch 340 is connected to an end of the second branch 320 far from the first branch 310.
In a possible implementation manner, referring to fig. 11a, a fourth branch 340 is connected to an end of the second branch 320, that is, one end of the second branch 320, which is far away from the first branch 310, the third branch 330 is parallel to the first branch 310, and the fourth branch 340 and the first branch 310 are respectively located at two sides of the second branch 320, that is, in fig. 11a, the fourth branch 340 and the first branch 310 are respectively located at two sides of the second branch 320, but a length of the fourth branch 340 along the Y direction is smaller than a length of the first branch 310 along the Y direction. A third gap H is formed between the fourth branch 340 and the second side 4023. First gap H1The width of (a) affects the bandwidth width of the WiFi6E frequency band; second gap H2The width of the first plate has a great influence on the working frequency of Bluetooth 2.4GHz and WiFi6E, and the closer the distance from the first plate edge 110 is, the lower the resonance is; third gap H3The width of (c) affects the current strength between the feed and ground, and thus the resonant depth of the antenna; and, the third gap H3The inner current loop forms coupling current to influence the bandwidth of the antenna; fourth gap H4The current loop can be excited to form a strong electromagnetic field environment, which is important for the performance radiation of the antenna. Referring to FIG. 11b, the distance between the seventh side 407 and the first side 401 is L17The distance between the end of the first branch 310 away from the first side 401 and the first side 401 is L11The distance between the fifth side 405 and the first side 401 is L15The distance between the third side 403 and the first side 401 is L13，L13＜L17＜L11＜L15. The distance between the second side edge 402 and the first plate edge 110 is D12The distance between the fourth side 404 and the first plate edge 110 is D14The distance between the sixth side 406 and the first board edge 110 is D16，D12＞D14＞D16. Fig. 11c is a schematic diagram illustrating a current path of an antenna by way of example, it can be seen that adding the fourth branch 340 physically changes a current loop path of the antenna, and a strong current between the fourth branch 340 and the ground metal layer 200 can be excited by optimizing a position and a gap width between the fourth branch 340 and the ground metal layer 200, and a frequency resonance position and a radiation intensity of the antenna can be optimized by adding a new radiation branch, i.e., the fourth branch 340, in a case where the width of the substrate 100, e.g., a PCB, is limited and the size is reduced.
In some embodiments, the clearance area 400 further includes an eighth side 408 and a ninth side 409 between the third side 403 and the fourth side 404, and an end of the eighth side 408 away from the third side 403 is connected to the ninth side 409; the eighth side 408 is parallel to the first plate edge 110, and the ninth side 409 is perpendicular to the first plate edge 110; the distance between the third side 403 and the first side 401 is L13The distance between the ninth side 409 and the first side 401 is L19，L13＞L19。
In one possible implementation, referring to fig. 12a, the first gap H1The width of (a) affects the bandwidth width of the WiFi6E frequency band; second gap H2The width of the first plate has great influence on the working frequency of Bluetooth 2.4GHz and WiFi6E, and the closer the distance between the first plate and the first plate edge 110 is, the lower the resonance is; third gap H3The width of (a) will affect the current strength between the feed and ground, and thus the resonant depth of the antenna; and, a third slit H3The inner current loop forms coupling current to influence the bandwidth of the antenna; fourth gap H4The current loop can be excited to form a strong electromagnetic field environment, and the electromagnetic field environment is important for the performance radiation of the antenna. The third ground branch 230 is connected with a fourth ground branch 250 extending along the Y direction, the side of the fourth ground branch 250 far from the metal ground 240 is partially overlapped with the side of the third ground branch 230 as a third side 403, the sides of the third ground branch 230 and the fourth ground branch 250 close to the first plate edge 110 are spliced to form a fourth side 404, and the other two sides of the fourth ground branch 250 form an eighth side 408 and a ninth side 409. The eighth side 408 is parallel to the first plate edge 110, and the ninth side409 is perpendicular to the first plate edge 110; referring to FIG. 12b, the distance between the seventh side 407 and the first side 401 is L17The distance between the end of the first branch 310 away from the first side 401 and the first side 401 is L11The distance between the fifth side 405 and the first side 401 is L15The distance between the third side 403 and the first side 401 is L13The distance between the ninth side 409 and the first side 401 is L19，L19＜L13＜L17＜L11＜L15. The distance between the second side edge 402 and the first plate edge 110 is D12The distance between the fourth side 404 and the first board edge 110 is D14The distance between the sixth side 406 and the first plate edge 110 is D16，D12＞D14＞D16. Fig. 12c is a schematic diagram illustrating a simulation of the radiation loop of the antenna in fig. 12a, wherein the sparseness of the arrows, the sizes of the arrows, and the shades of the arrows can display the current intensities, for example, the current intensities are large in areas with high density of the arrows, or in positions with large size of the arrows or in positions with deep color of the arrows, and the current intensities are small in areas with low density of the arrows, or in positions with small size of the arrows or in positions with light color of the arrows.
In some embodiments, referring to fig. 13a, the third branch knot 230 is connected to a fifth branch knot 260 extending along the Y direction, and two sides of the fifth branch knot 260 extending along the X direction, one side of the two sides coincides with the metal ground 240 as a side part of the first side 401, the other side of the two sides coincides with the third branch knot 230 as a side part of the third side 403, and a side of the fifth branch knot 260 close to the first board side 110 is a second side 402. First gap H1The width of (b) affects the bandwidth width of the WiFi6E band; second gap H2The width of the first plate has great influence on the working frequency of Bluetooth 2.4GHz and WiFi6E, and the closer the distance between the first plate and the first plate edge 110 is, the lower the resonance is; third gap H3The width of (a) will affect the current strength between the feed and ground, and thus the resonant depth of the antenna; and, a third slit H3The inner current loop forms coupling current to influence the bandwidth of the antenna; fourth gap H4Can excite the current loop to form strong currentThe magnetic field environment is crucial to the performance radiation of the antenna.
In some embodiments, the plurality of clearance areas 400 formed by the ground metal layer 200 includes at least: a first clearance area 400 and a second clearance area 400, a third gap in the first clearance area 400 being smaller than a third gap in the second clearance area 400.
In one possible implementation manner, referring to fig. 13a, the ground metal layer 200 is formed with a first clearance area 400 and a second clearance area 400, and a third gap in the first clearance area 400 is smaller than a third gap in the second clearance area 400. Referring to FIG. 13b, the distance between the seventh side 407 and the first side 401 is L17The distance between the end of the first branch 310 away from the first side 401 and the first side 401 is L11The distance between the fifth side 405 and the first side 401 is L15The distance between the third side 403 and the first side 401 is L13，L13＜L17＜L11＜L15. The distance between the second side edge 402 and the first plate edge 110 is D12The distance between the fourth side 404 and the first board edge 110 is D14The distance between the sixth side 406 and the first plate edge 110 is D16，D12＞D14＞D16. Fig. 13c is a schematic diagram illustrating a simulation of the radiation loop of the antenna in fig. 13a, wherein the sparseness of the arrows, the sizes of the arrows, and the shades of the arrows can display the current intensities, for example, the current intensities are large in areas with high density of the arrows, or in positions with large size of the arrows or in positions with deep color of the arrows, and the current intensities are small in areas with low density of the arrows, or in positions with small size of the arrows or in positions with light color of the arrows.
In some embodiments, the clearance area 400 further includes a tenth side 410, an eleventh side 411, a twelfth side 412 and a thirteenth side 413 which are located between the second side 402 and the third side 403 and are sequentially connected, the tenth side 410 and the twelfth side 412 are perpendicular to the first board edge 110, and the eleventh side 411 and the thirteenth side 413 are parallel to the first board edge 110; a fifth gap H is formed between the second branch 320 and the eleventh side 4115(ii) a The tenth side 410 and the first sideThe distance between the sides 401 is L110The distance between the twelfth side 412 and the first side 401 is L112The distance between the third side 403 and the first side 401 is L13，L110＜L112＜L13。
In one possible implementation, referring to fig. 14a, the first gap H1The width of (a) affects the bandwidth width of the WiFi6E frequency band; second gap H2The width of the first plate has a great influence on the working frequency of Bluetooth 2.4GHz and WiFi6E, and the closer the distance from the first plate edge 110 is, the lower the resonance is; fifth gap H5The width of (c) affects the current strength between the feed and ground, and thus the resonant depth of the antenna; and, a fifth gap H5The inner current loop forms coupling current to influence the bandwidth of the antenna; fourth gap H4The current loop can be excited to form a strong electromagnetic field environment, and the electromagnetic field environment is important for the performance radiation of the antenna. The third branch knot 230 is connected with an L-shaped sixth branch knot 270, a side edge of the sixth branch knot 270 away from the metal ground 240 coincides with a side edge of the third branch knot 230 as a third side edge 403, a side edge of the sixth branch knot 270 away from the second branch knot 320 coincides with a side edge of the third branch knot 230 as a second side edge 402, and other side edges of the sixth branch knot 270 form a tenth side edge 410, an eleventh side edge 411, a twelfth side edge 412 and a thirteenth side edge 413. The tenth side 410 and the twelfth side 412 are perpendicular to the first board edge 110, and the eleventh side 411 and the thirteenth side 413 are parallel to the first board edge 110; a fifth gap H is formed between the second branch 320 and the eleventh side 4115(ii) a Referring to fig. 14b, the distance between the seventh side 407 and the first side 401 is L17The distance between the end of the first branch 310 away from the first side 401 and the first side 401 is L11The distance between the fifth side 405 and the first side 401 is L15The distance between the third side 403 and the first side 401 is L13The distance between the tenth side 410 and the first side 401 is L110The distance between the twelfth side 412 and the first side 401 is L112，L110＜L112＜L13＜L17＜L11＜L15. A second side edge 402 andthe distance between the first plate edges 110 is D12The distance between the fourth side 404 and the first board edge 110 is D14The distance between the sixth side 406 and the first board edge 110 is D16The distance between the eleventh side 411 and the first plate edge 110 is D111，D12＞D111＞D14＞D16. Fig. 14c is a simulated schematic diagram of the radiation loop of the antenna in fig. 14a, in which the sparseness of the arrows, the sizes of the arrows, and the shades of the arrows can all show the current intensity, for example, the current intensity is large in the area with a large density of the arrows, or in the position with a large size of the arrows or in the position with a dark color of the arrows, and the current intensity is small in the area with a small density of the arrows, or in the position with a small size of the arrows or in the position with a light color of the arrows.
It should be noted that, with reference to fig. 12c, fig. 13c and fig. 14c, the radiation performance of the low frequency is greatly affected by the ground metal layer 200, and through the structural optimization and design of the floor, i.e., the ground metal layer 200 and the substrate 100, the edge field of the floor changes, the surface wave path changes simultaneously, and the size of the gap between the antenna branches and the ground branches can be adjusted by optimizing the ground structure, i.e., the ground metal layer 200, according to the requirements, so as to optimize the resonance position and the directional pattern characteristics of the antenna.
In a second aspect, an embodiment of the present invention further provides a terminal device, including any one of the antenna apparatuses in the embodiments of the first aspect.
It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (10)

1. An antenna device, comprising:
a substrate having a first plate edge;
a ground metal layer printed on the substrate, the ground metal layer being formed with a plurality of clearance areas; the clearance area comprises a first side edge, a second side edge, a third side edge, a fourth side edge, a fifth side edge, a sixth side edge and a seventh side edge which are sequentially connected, and an opening of the clearance area faces to the first plate edge; the first side edge, the third side edge, the fifth side edge and the seventh side edge are perpendicular to the first plate edge, and the second side edge, the fourth side edge and the sixth side edge are parallel to the first plate edge;
the antenna bodies are in one-to-one correspondence to the clearance areas and are in feed connection with the grounding metal layer; the antenna body comprises a first branch and a second branch, the first branch is parallel to the first plate edge, the second branch is perpendicular to the first plate edge, and the second branch is located on one side, close to the first side, of the first branch; a first gap is formed between the first branch knot and the fourth side edge, a second gap is formed between the first branch knot and the first plate edge, a third gap is formed between the second branch knot and the second side edge, and a fourth gap is formed between the second branch knot and the first side edge; the distance between the seventh side edge and the first side edge is L17The distance between one end of the first branch knot far away from the first side edge and the first side edge is L11The distance between the fifth side edge and the first side edge is L15，L17＜L11＜L15。
2. The antenna device according to claim 1, characterized in that the fourth slot is smaller than 1.5 mm.
3. The antenna device according to claim 1, wherein at least two of the antenna bodies are symmetrically disposed, and the symmetry axis is parallel or perpendicular to the first board edge.
4. The antenna device according to claim 1, wherein a distance between the second side edge and the first board edge is D12The distance between the fourth side edge and the first plate edge is D14The sixth side andthe distance between the first plate edges is D16，D12＞D14＞D16。
5. The antenna device according to claim 1, wherein the antenna body further includes a third branch parallel to the second branch, the third branch is connected to the end of the first branch far away from the second branch, and the third branch and the second branch are located on the same side of the first branch.
6. The antenna device according to claim 1, wherein the antenna body further includes a fourth branch parallel to the first branch, and the fourth branch is connected to the second branch at an end away from the first branch.
7. The antenna device as claimed in claim 1, wherein the clearance area further comprises an eighth side and a ninth side between the third side and the fourth side, and an end of the eighth side away from the third side is connected to the ninth side; the eighth side edge is parallel to the first plate edge, and the ninth side edge is perpendicular to the first plate edge;
the distance between the third side and the first side is L13The distance between the ninth side and the first side is L19，L13＞L19。
8. The antenna device as claimed in claim 1, wherein the plurality of clearance areas formed by the grounding metal layer at least comprises: a first clearance region and a second clearance region, a third gap in the first clearance region being smaller than a third gap in the second clearance region.
9. The antenna device as claimed in claim 1, wherein the clearance area further comprises a tenth side, an eleventh side, a twelfth side and a thirteenth side sequentially connected between the second side and the third side, wherein the tenth side and the twelfth side are perpendicular to the first board edge, and the eleventh side and the thirteenth side are parallel to the first board edge; a fifth gap is formed between the second branch knot and the eleventh side edge;
the distance between the tenth side edge and the first side edge is L110The distance between the twelfth side edge and the first side edge is L112The distance between the third side and the first side is L13，L110＜L112＜L13。
10. A terminal device, characterized in that it comprises an antenna arrangement according to any of claims 1-9.
CN202210336059.2A 2022-03-31 2022-03-31 Antenna device and terminal equipment Pending CN114784511A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210336059.2A CN114784511A (en) 2022-03-31 2022-03-31 Antenna device and terminal equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210336059.2A CN114784511A (en) 2022-03-31 2022-03-31 Antenna device and terminal equipment

Publications (1)

Publication Number Publication Date
CN114784511A true CN114784511A (en) 2022-07-22

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210336059.2A Pending CN114784511A (en) 2022-03-31 2022-03-31 Antenna device and terminal equipment

Country Status (1)

Country Link
CN (1) CN114784511A (en)

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