WO2021109801A1 - 降低usb对天线干扰的装置及终端 - Google Patents

降低usb对天线干扰的装置及终端 Download PDF

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Publication number
WO2021109801A1
WO2021109801A1 PCT/CN2020/127416 CN2020127416W WO2021109801A1 WO 2021109801 A1 WO2021109801 A1 WO 2021109801A1 CN 2020127416 W CN2020127416 W CN 2020127416W WO 2021109801 A1 WO2021109801 A1 WO 2021109801A1
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WIPO (PCT)
Prior art keywords
ground
usb
interference
reducing
usb connector
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PCT/CN2020/127416
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English (en)
French (fr)
Inventor
刘婷
高明泉
孙玮
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中兴通讯股份有限公司
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Publication of WO2021109801A1 publication Critical patent/WO2021109801A1/zh

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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
    • 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
    • H01Q1/526—Electromagnetic shields
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/71—Coupling devices for rigid printing circuits or like structures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/71—Coupling devices for rigid printing circuits or like structures
    • H01R12/712—Coupling devices for rigid printing circuits or like structures co-operating with the surface of the printed circuit or with a coupling device exclusively provided on the surface of the printed circuit
    • H01R12/716—Coupling device provided on the PCB
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2201/00—Connectors or connections adapted for particular applications
    • H01R2201/02—Connectors or connections adapted for particular applications for antennas

Definitions

  • the embodiment of the present invention relates to but not limited to the field of computer communication networks, and specifically relates to but not limited to a device and terminal for reducing USB interference to an antenna.
  • the USB interface is an important interface of the terminal for charging and data transmission.
  • the traditional USB transmission rate is low, and the impact on the antenna is only the change of the antenna body ground after the USB interface is connected to the USB cable, which causes the standing wave ratio of the antenna to shift.
  • the connection of the USB cable will not only affect the standing wave of the antenna, but also cause interference, resulting in a serious decline in TIS (Total Isotropic Sensitivity).
  • an embodiment of the present invention provides a device for reducing USB interference to an antenna, which includes a USB connector, a first interference reduction structure, and a PCB board; the USB connector is assembled where the first interference reduction structure is located.
  • the first interference reduction structure is located on the surface of the surface layer of the PCB board, and is used to isolate the ground of the ground shell of the USB connector from the ground of the surface layer;
  • the first An interference reduction structure further includes a first ground hole through which the ground of the ground shell of the USB connector is connected to the reference main ground of the PCB board.
  • An embodiment of the present invention also provides a terminal, and the terminal includes the device for reducing the interference of the USB to the antenna as described in any one of the above.
  • FIG. 1 is a schematic diagram of a device for reducing interference from USB to antenna provided by Embodiment 1 of the present invention
  • FIG. 2 is a schematic diagram of another device for reducing the interference of USB to antenna provided by the first embodiment of the present invention
  • FIG. 3 is a schematic diagram of another device for reducing the interference of USB to the antenna provided by the first embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a filter circuit device provided by Embodiment 1 of the present invention.
  • FIG. 5 is a schematic diagram of another device for reducing the interference of USB to the antenna according to the first embodiment of the present invention.
  • FIG. 6 is a schematic diagram of another device for reducing USB interference to an antenna according to Embodiment 1 of the present invention.
  • FIG. 7 is a schematic diagram of another device for reducing the interference of the USB to the antenna provided by the first embodiment of the present invention.
  • the device 100 for reducing the interference of USB to the antenna includes: a USB connector 101, a first interference reduction structure 102, and a PCB board 103.
  • the USB connector 101 is assembled in the area where the first interference reduction structure 102 is located.
  • the USB connector has a grounded shell.
  • the first interference reduction structure 102 is located on the surface of the surface layer of the PCB board 103, and is used to isolate the ground of the ground shell of the USB connector 101 from the ground of the surface layer; the first interference reduction structure 102 also includes a first A ground hole 104 connects the ground of the ground shell of the USB connector 101 to the reference main ground of the PCB board 103 through the first ground hole 104.
  • the device for reducing the interference of USB to antenna provided by the embodiments of the present invention can be applied to various mobile terminals, including but not limited to mobile phones, wearable devices, data cards, vehicle terminals, UFIs, and other terminals that require USB connectors. equipment.
  • the device for reducing the interference of USB to antenna provided by the present invention can also be applied to any other devices of USB connector, including but not limited to computer case, USB socket, USB socket, data cable, etc.
  • the shell of the USB connector is usually directly connected to the ground of the surface layer of the PCB board, and then connected to the main ground, without any isolation and filtering processing. Therefore, there are technical problems such as standing wave influence and interference on the antenna after the USB interface is connected to the USB cable, resulting in a serious drop in TIS.
  • the interference (such as the interference generated by the USB clock signal) can be effectively isolated from the surface of the PCB board, and the interference can be shielded in the shell of the USB connector to prevent interference Coupled to other parts through the ground of the PCB motherboard.
  • the PCB board may be any layer, including but not limited to any level board such as a first-level board and a second-level board.
  • USB connectors include but are not limited to USB TYPE-A, USB TYPE-B, USB MICRO-A, USB TYPE-C and other USB connectors.
  • the standards supported by USB connectors include but are not limited to supporting USB1 .0, USB2.0, USB3.0, USB3.1 and other standards.
  • the number of USB connectors in the device for reducing the interference of USB to the antenna provided by the embodiment of the present invention may be one or more, which is not limited here.
  • each USB connector when there are multiple USB connectors, the form of each USB connector may be the same, or may be at least partially the same, or the type of each USB connector may be different.
  • the standards supported by each USB connector can be the same, or the standard supported by each USB connector can be partially the same, or it can be supported by each USB connector The standards are different and are not limited here. For example, there may be three USB connectors in the device that reduces the interference of USB to the antenna, namely USB TYPE-A and two USB TYPE-B.
  • the ground of the ground shell of each USB connector is connected to the reference main ground through the first ground hole. It should be noted that there may be one or more first ground holes, and those skilled in the art may appropriately adjust the number of the first ground holes according to actual needs.
  • each layer board is arranged from top to bottom in sequence, and the surface layer board of the PCB board includes at least one of the uppermost layer board and the lowermost layer board.
  • the PCB board only includes one layer of laminate, and the laminate is used as the surface laminate.
  • the surface layer of the surface layer board of the PCB board includes the surface layer that is not connected to the layer boards of other layers.
  • the PCB board includes a 5-layer board, from top to bottom, the top layer 21, the second layer 22, the third layer 23, the fourth layer 24, and the bottom layer 25 are respectively.
  • the current surface layer is shown in Figure 2, which is the outer surface of the top layer.
  • Figure 2 is the outer surface of the top layer.
  • those skilled in the art can also use the outer surface of the bottom layer as the surface layer as needed.
  • the port of the USB connector is exposed from the surface of the surface layer board to receive a USB cable, a USB flash drive, and the like.
  • any layer can be selected as the reference main ground for the reference main ground of the PCB board.
  • the shape of the first interference reduction structure is not limited in the embodiment of the present invention, and the shape of the first interference reduction structure includes but is not limited to any shape such as a circle, an ellipse, a square, and an irregular shape. In some embodiments, the shape of the first interference reduction structure may be determined according to the specific wiring form of the PCB board. However, the area where the first interference reduction structure is located must be larger than the area required for the assembly of the USB connector.
  • the first interference reduction structure includes the first hollowed out position obtained by hollowing out the surface layer board.
  • hollowing means that the surface PCB is not coated with copper, that is, the PCB is not wired at the hollowed out, and the USB connector is not directly connected to the ground of the surface layer board.
  • the hollowed-out material (that is, the material of the hollowed-out part of the PCB surface layer) may be a general PCB board, such as FR4.
  • the hollowed out material can also be other materials, which is not limited here.
  • the first interference reduction structure further includes a first hollow space obtained by hollowing out the surface layer board, and the target insulating material is laid in the first hollow space according to a preset rule.
  • the target can be laid in the first hollow position according to preset rules. Insulation Materials.
  • target insulating material can be various materials that those skilled in the art think can be used.
  • the preset rules include, but are not limited to, any one of the following: the first hollowed-out position is laid with the target insulating material, and the target insulating material is laid within the preset range around each USB connector in the first hollowed-out position. , Lay the target insulating material along the edge of the first excavation position, etc.
  • the first interference reduction structure further includes a filter circuit and a feed point.
  • the feed point is respectively connected with the grounding shell of the USB connector and the filter circuit; the filter circuit is arranged along at least a part of the edge of the first hollow; the first ground hole is the ground hole of the filter circuit.
  • the filter circuit can be arranged around the first cutout position, or can be arranged along a part of the edge of the first cutout position.
  • the filter circuit may be arranged along at least a part of the edge of the first hollowed out position.
  • the filter circuit may be arranged close to at least a part of the edge of the first hollowed out position, or the filter circuit may be arranged along the first hollowed out position. At least a part of the direction of the edge of a cutout is set, but the filter circuit and the first cutout may not be close to each other, but a certain distance is left.
  • FIG. 3 provides a schematic diagram of another device for reducing the interference of USB to an antenna.
  • the first reducing interference structure includes a filter circuit 301 and a feed point 302 in addition to the first hollow 304.
  • the feeding point 302 is respectively connected to the grounding shell of the USB connector 303 and the filter circuit 301; the filter circuit 301 is arranged around the first hollow 304; the first ground hole 305 is the ground hole of the filter circuit 301.
  • FIG. 4 provides a schematic diagram of a filter circuit device. As shown in FIG. 4, the filter circuit is connected to the USB connector through the feed point 402, and is connected to the reference main ground through the first ground hole 401.
  • USB3.0 Take USB3.0 as an example, when USB3.0 is working, the clock frequency of USB3.0 is 2.5G. As we all know, 2.4GHz ⁇ 2.5GHz have concentrated many communication standards, such as WIFI2.4G, Bluetooth, Zigbee, etc. If the USB connector is not well protected at this time, it will inevitably affect WIFI, etc. The most intuitive impact is the antenna's TIS The indicator drops, the wifi signal becomes weaker, and the number of signal grids becomes less.
  • the shape of the filter circuit of this embodiment is shown in Figure 4, which can effectively filter the interference of about 2.5G.
  • the filter circuit can be realized by wiring on the PCB, according to the specific PCB thickness, number of layers, and Adjust the line width appropriately according to the corresponding media parameters.
  • the filter circuit can be 1 group, 2 groups, etc., any number of groups, and those skilled in the art can set it according to needs.
  • the device schematic diagram of the filter circuit in FIG. 4 is only an example of the microstrip line of the PCB trace.
  • the filter circuit may also include, but is not limited to, an LC filter circuit built by a resistive container, a stripline filter circuit placed on the inner layer, and the like.
  • the feed point is connected to the ground pin of the ground shell of the USB connector.
  • Feeding points include but are not limited to at least one of the following: exposed copper, PCB traces, and shrapnel. Among them, the exposed copper, shrapnel and PCB traces can be of any shape, as long as they can ensure full contact and connection with the ground shell of the USB connector. If the device for reducing the interference of USB to the antenna includes multiple USB connectors, the ground pins of the shell of each USB connector can be connected to the feed point in a star shape, or in a bus or ring manner. .
  • the first interference reduction structure further includes a second hollowed out position obtained by hollowing out the surface layer plate; the second hollowed out position is arranged around a target area, and the target area includes the area where the filter circuit is located and the area where the filter circuit is located. State the area where the first hole is located.
  • FIG. 5 provides a schematic diagram of another device for reducing the interference of USB to the antenna.
  • the device 500 for reducing the interference of USB to the antenna includes a PCB board 501, a USB connector 502, and a first hole 503, a filter circuit 504,
  • the first interference reduction structure is composed of the first ground hole 505, the second hollow 506, and the feed point 507.
  • the first interference reduction structure is located on the surface of the surface layer of the PCB board 501, the USB connector 502 is assembled in the area where the first cutout 503 is located, and the feed point 507 is connected to the filter circuit 504 and the USB connector 502 respectively.
  • the ground hole 505 is a ground hole of the filter circuit 504, and the second cutout 506 is arranged around the target area. It should be noted that the target area includes the area where the filter circuit 504 is located and the area where the first cutout 503 is located.
  • first hollow-out position and the second hollow-out position are respectively obtained by hollowing out the surface layer board.
  • the filter circuit when there is the second cutout, may also be arranged along a part of the edge of the first cutout.
  • the PCB board includes a surface layer board, a main ground layer board, and at least one intermediate layer board.
  • the middle layer plate is located between the surface layer plate and the main ground layer plate.
  • the middle layer board includes a second ground hole, the first ground hole is connected to all the second ground holes, and the ground shell of the USB connector is connected to the reference main ground on the main ground board through the first ground hole and the second ground hole .
  • the intermediate layer board further includes a second interference reduction structure, and the second interference reduction structure is arranged around the second ground hole for isolating the ground of the second ground hole from the ground of other areas of the intermediate layer board.
  • the main ground board is the preset reference main ground layer.
  • the main ground board can be the bottom laminate or the penultimate laminate.
  • the main ground layer can be the bottom layer or any layer from the surface layer to the inside, including the third layer, depending on which layer is determined as the reference main ground.
  • the second interference reduction structure includes a third hollowed out position obtained by hollowing out the intermediate layer board.
  • each second interference reduction structure corresponds to a second ground hole
  • each intermediate layer includes at least one second ground hole
  • Figure 6 provides a schematic diagram of another device for reducing the interference of USB to the antenna.
  • the device 600 for reducing the interference of USB to the antenna includes a PCB board, a USB connector, and a first hole, a filter circuit, and a first ground hole. 601.
  • the first interference-reducing structure composed of the second hole and the feed point.
  • the PCB board includes 6-layer boards, which are a surface layer board 61, a second layer board 62, a third layer board 63, a fourth layer board 64, a fifth layer board 65, and a bottom layer board 66, respectively.
  • the fourth layer 64 is selected as the reference main ground
  • the fourth layer is the main ground layer
  • the second layer 62 and the third layer 63 are the middle layer plates.
  • the second layer board 62 includes a second ground hole A 602 and a third cutout A 605, and the third layer board 63 includes a second ground hole B 603 and a third cutout B 604.
  • the USB connector 602 is connected to the filter circuit 604 through the feed point 603.
  • the first ground hole 601 is the ground hole of the filter circuit 604. It is connected to the second ground hole A 602 through the first ground hole 601, and the second ground hole B 603 is further behind. Connect to the ground hole of the reference main ground on the main ground plate 64. Since the second ground hole A 602 and the second ground hole B 603 are surrounded by a third hole A 605 and a third hole B 604, respectively, the second ground hole A 602 and the second ground hole B 603 are separated from their respective layers. The ground of the board is isolated.
  • the shapes of the first interference reduction structure and the second interference reduction structure in the embodiments of the present invention are not limited in the present invention, and include, but are not limited to, circular, elliptical, square, and irregular shapes.
  • the surface layer board further includes a third ground hole, wherein the third ground hole is located in an area outside the first interference reduction structure, and the ground of the surface layer board is connected to the reference main ground through the third ground hole .
  • the third grounding hole 606 is located in an area outside the first interference reduction structure, in other words, the third grounding hole is located in an area outside the second hollow in the surface of the surface layer board.
  • the third ground hole 606 is connected to the ground hole of the second layer board 62 and the ground hole of the third layer board 63 and then further connected to the ground hole of the reference main ground on the main ground board 64.
  • FIG. 6 only schematically illustrates the position and number of the third grounding holes, and the specific position and number of the third grounding holes can be adjusted by those skilled in the art according to actual needs.
  • FIG. 7 provides a schematic diagram of another device for reducing the interference of USB to the antenna.
  • the motherboard of the PCB of the terminal device using the USB connector shown in Figure 7 is a 6-layer board (it should be noted that the actual terminal device can have any layer, such as 8 layers, 10 layers, etc.), including: terminal device motherboard
  • the top layer 71 of the PCB is mainly used to place components; the second layer 72 of the main board PCB is used for inner wiring or reference ground; the third layer 73 of the main board PCB is used for inner wiring or reference ground; the main board PCB
  • the fourth layer 74 is used for inner wiring or ground reference; the fifth layer 75 of the main board PCB is used for inner wiring or reference ground; the bottom layer 76 of the main board PCB.
  • USB connector 701 which can be a USB connector that supports standards such as USB1.0, USB2.0, USB3.0, USB3.1, etc.
  • the form of the USB connector can be USB TYPE-A , USB TYPE-B, USB MICRO-A, USB TYPE-C; the second hollowed out position 705 in the shaded part, which is the hollowed-out isolation belt between the USB connector 701 and the ground of the motherboard, and is used to protect the ground of the USB connector 701.
  • the housing is isolated from the ground of the surface layer 71 of the PCB motherboard; the filter circuit 704 is used to filter out the interference generated by the corresponding USB clock signal; the feed point 703 is the connection feed point of the filter circuit 704 and the USB connector 701; The first ground hole 706 is the ground hole of the filter circuit 704; and the second ground hole A 707, the second ground hole B 709, and the reference main ground ground hole 711 are ground holes on the corresponding layer on the main board.
  • the main board of the terminal device can include any layer, and can be a first-order board, a second-order board, or any-order board.
  • the PCB board includes a top layer 71, a second layer 72, a third layer 73, a fourth layer 74, a fifth layer 75, and a bottom layer 76.
  • the fourth layer 74 is selected as the reference main ground (in this embodiment, the fourth layer 74 is used as the reference main ground as an example, the motherboard of the actual terminal product can select any layer of the PCB as the reference main ground).
  • USB connector 701 Take the USB connector 701 on the top side as an example. It should be noted that the USB connector 701 can also be on the bottom side.
  • the USB connector 701 can be USB TYPE-A, USB TYPE-B, USB MICRO-A,
  • the shell of the USB connector 701 is isolated from the ground of the top layer 71 through the second hollow 705, and the second hollow 705, that is, the shaded part is the second hollow in the hollowed isolation area.
  • the schematic diagram of this area is an ellipse ring, which can actually be any shape, and the shape can be determined according to the specific wiring form of the PCB board.
  • hollowing means that the surface layer 71PCB is not coated with copper, that is, the PCB is not routed in the hollowed out, and the USB connector 701 is not directly connected to the ground of the top layer 71.
  • the hollowed out material can be a general PCB board. , Such as FR4, can also be other materials,
  • the USB connector 701 is connected to the filter circuit 704 through the feed point 703.
  • the number of the feed point 703 matches the ground pin of the shell of the USB connector 701, which can be 1, 2, 3, generally four .
  • the feed point 703 includes but is not limited to at least one of the following: exposed copper, PCB traces, and shrapnel. Wherein, the exposed copper, shrapnel, and PCB traces can be of any shape, as long as they can ensure full contact and connection with the ground shell of the USB connector 701.
  • the shell ground pins of each USB connector 701 can be connected to the feed point 703 in a star shape, or can be connected to the feed point 703 in a bus type or a ring.
  • the ground of the shell of the USB connector 701 is directly connected to the reference main ground ground hole 711 through the first ground hole 706, the first ground hole 706 is connected to the second ground hole A 707 of the second layer 72, and the third layer 73
  • the second ground hole B 709 of the reference main ground 74 is further connected to the reference main ground ground hole 711 of the reference main ground 74, wherein the second ground hole A 707 has a second interference reduction structure A 708 that isolates it from the surrounding ground of the laminate.
  • the second grounding hole B 709 has a second interference reducing structure B 710 that isolates it from the surrounding ground of the laminate.
  • the circular part with oblique lines on the periphery of the second ground hole A 707 and the second ground hole B 709 indicates the hollowed out and isolation.
  • the hollowed out shape can be any shape and is not limited to this embodiment.
  • the round (circular) shape can also be square, oval, etc.
  • USB3.0 Take USB3.0 as an example, when USB3.0 is working, the clock frequency of USB3.0 is 2.5G. As we all know, 2.4GHz ⁇ 2.5GHz have concentrated many communication standards, such as WIFI2.4G, Bluetooth, Zigbee, etc. If the USB connector is not well protected at this time, it will inevitably affect WIFI, etc. The most intuitive impact is the antenna's TIS The indicator drops, the wifi signal becomes weaker, and the number of signal grids becomes less.
  • the filter circuit of this embodiment can effectively filter the interference of about 2.5G.
  • the filter circuit can be realized by the wiring on the PCB. It can be adjusted appropriately according to the specific PCB thickness, number of layers, and corresponding medium parameters. Line width.
  • the requirements of different frequency bands on the terminal equipment such as LTE B7, B41 frequency band, wifi 5G frequency band; and different USB interfaces, such as USB3.1, the clock frequency of USB3.1 is 5GHz, and the frequency band of the filter circuit of the USB connector
  • the requirements are different, and the specific frequency bands that need to be filtered are determined according to the actual USB interface standards and the wireless frequency bands that the terminal needs to support.
  • the filter circuit can be 1 group, 2 groups, etc. any number of groups.
  • the filter circuit includes but is not limited to at least one of the following: a microstrip line routed by PCB, an LC filter circuit built by a resistive container, and a stripline filter circuit routed on the inner layer.
  • USB connectors may be other connectors such as earphone jacks.
  • the connected surface ground is connected to other ground layers through ground holes, and then connected to the main ground layer.
  • the present invention separates the shell of the USB connector on the surface layer where the USB connector is located by arranging the first interference reduction structure.
  • the isolated first ground hole is also isolated from the ground of other layers, and is directly connected to the reference main ground of the main ground layer. In this way, the integrity of the USB signal can be protected, and the interference generated during the USB data transmission can be effectively suppressed, which can effectively enhance the user experience and improve the product performance.
  • the first interference reduction structure may also include a filter circuit, by connecting the shell of the USB connector to the filter circuit, and then connecting the isolated first ground hole to the filter circuit, effectively isolating the USB connector from other layers of ground.
  • the signal is shielded in the shell of the USB connector to avoid the interference formed by the clock signal of the USB.
  • the clock signal will be coupled to the various parts of the board through the surface ground, especially the antenna part, which will affect the antenna's receiving index, reduce the TIS, and lead to the degradation of the receiving performance of the whole machine and the deterioration of the passing quality. , The transmission rate is reduced, etc.
  • the device for reducing the interference of USB to the antenna provided by the present invention can be applied to all kinds of mobile terminals, such as mobile phones, wearable devices, data cards, vehicle-mounted devices, UFI products, and all other terminal devices with USB connectors. It is applicable to any other equipment suitable for USB connector.
  • the device provided by the present invention to reduce the interference of USB to the antenna can significantly improve or inhibit the working of the USB connector, such as charging or USB high speed.
  • the interference generated by the USB clock signal Effectively reduce the impact of USB on the antenna TIS, the signal display of the user interface will not be significantly reduced, and the call quality and data transmission have been well improved.
  • the application of the device for reducing the interference of USB to antenna provided by the embodiment of the present invention can significantly improve the interference of USB and reduce the USB data transmission, especially the LTE frequency band, WIFI frequency band, and 5GNR frequency band during USB3.0 high-speed data transmission. Interference caused by millimeter waves, etc., improves user experience and satisfaction.
  • This embodiment also provides a terminal, which includes the device for reducing the interference of USB to the antenna in any of the foregoing embodiments.

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Abstract

本发明提供的一种降低USB对天线干扰的装置及终端，该装置包括USB连接器、第一降低干扰结构、PCB板；其中USB连接器装配于第一降低干扰结构所在区域之内；第一降低干扰结构位于PCB板的表层层板的表层，用于将USB连接器的接地外壳的地与表层层板的地进行隔离；第一降低干扰结构包括第一接地孔，通过第一接地孔将USB连接器的接地外壳的地连接到PCB板的参考主地。

Description

降低USB对天线干扰的装置及终端 技术领域
本发明实施例涉及但不限于计算机通信网络领域，具体而言，涉及但不限于一种降低USB对天线干扰的装置及终端。
背景技术
USB接口是终端的重要接口，用以充电，传输数据。传统的USB传输速率低，对天线的影响只是USB接口接入USB线后天线本体地的变化导致天线的驻波比偏移。但随着USB速率的不断提升，USB线缆接入后，对天线不只是单纯的影响驻波，更多的是产生干扰，导致TIS(Total Isotropic Sensitivity，总全向灵敏度)严重下降。
发明内容
为解决上述技术问题，本发明实施例提供一种降低USB对天线干扰的装置，包括USB连接器、第一降低干扰结构、PCB板；所述USB连接器装配于所述第一降低干扰结构所在区域之内；所述第一降低干扰结构位于所述PCB板的表层层板的表层，用于将所述USB连接器的接地外壳的地与所述表层层板的地进行隔离；所述第一降低干扰结构还包括第一接地孔，通过所述第一接地孔将所述USB连接器的接地外壳的地连接到所述PCB板的参考主地。
本发明实施例还提供一种终端，所所述终端包括如上述任一项所述的降低USB对天线干扰的装置。
本发明其他特征和相应的有益效果在说明书的后面部分进行阐述说明，且应当理解，至少部分有益效果从本发明说明书中的记载变的显而易见。
附图说明
图1为本发明实施例一提供的一种降低USB对天线干扰的装置的示意图；
图2为本发明实施例一提供的另一种降低USB对天线干扰的装置的示意图；
图3为本发明实施例一提供的另一种降低USB对天线干扰的装置的示意图；
图4为本发明实施例一提供的一种滤电路装置的示意图；
图5为本发明实施例一提供的另一种降低USB对天线干扰的装置的示意图；
图6为本发明实施例一提供的另一种降低USB对天线干扰的装置的示意图；
图7为本发明实施例一提供的另一种降低USB对天线干扰的装置的示意图。
具体实施方式
为了使本发明的目的、技术方案及优点更加清楚明白，下面通过具体实施方式结合附图对本发明实施例作进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。
实施例一：
请参见图1，本实施例提供的一种降低USB对天线干扰的装置100包括：USB连接器101、第一降低干扰结构102、PCB板103。USB连接器101装配于第一降低干扰结构102所在区域之内。USB连接器具有接地外壳。
第一降低干扰结构102位于PCB板103的表层层板的表层，用于将USB连接器101的接地外壳的地(ground)与表层层板的地进行隔离；第一降低 干扰结构102还包括第一接地孔104，通过第一接地孔104将USB连接器101的接地外壳的地连接到PCB板103的参考主地。
本发明实施例所提供的降低USB对天线干扰的装置可以应用于各类移动终端，包括但不限于手机、可穿戴设备、数据卡类、车载终端、UFI类等各种需要USB连接器的终端设备。在一些实施例中，本发明所提供的降低USB对天线干扰的装置还可以适用于USB连接器的其他任意设备，包括但不限于电脑机箱、USB插排、USB插座、数据线等。
在相关技术中，通常是将USB连接器的外壳直接与PCB板表层层板的地相连接，然后接到主地上，未做任何隔离和滤波处理。因此，存在当USB接口接入USB线后对天线存在驻波影响和干扰，导致TIS严重下降等技术问题。通过应用本实施例提供的降低USB对天线干扰的装置，可以有效地将干扰(如USB时钟信号产生的干扰)与PCB板的表层相隔离，将干扰屏蔽在USB连接器的外壳内，防止干扰通过PCB主板的地耦合到其他部分。
在一些实施例中，PCB板可以是任意层，包括但不限于一阶板、二阶板等任意阶板。
需要说明的是，USB连接器的形式包括但不限于USB TYPE-A、USB TYPE-B、USB MICRO-A、USB TYPE-C等USB连接器，USB连接器支持的标准包括但不限于支持USB1.0，USB2.0，USB3.0，USB3.1等标准。
需要说明的是，本发明实施例提供的降低USB对天线干扰的装置中的USB连接器的数量可以是一个，也可以是多个，在此不做限定。
另外，当存在多个USB连接器时，各个USB连接器的形式可以是相同的，也可以是至少部分相同，或者各个USB连接器的种类均不相同。同理，当存在多个USB连接器时，各个USB连接器所支持的标准可以是相同的，也可以是各个USB连接器所支持的标准存在部分相同，还可以是各个USB连接器所支持的标准各不相同，在此不做限定。例如，降低USB对天线干 扰的装置中可存在3个USB连接器，分别为USB TYPE-A和两个USB TYPE-B。
当存在多个USB连接器时，各个USB连接器的接地外壳的地均通过第一接地孔连接到参考主地。需要说明的是，第一接地孔可以是一个，也可以是多个，本领域技术人员可以根据实际需要适当调整第一接地孔的数量。
在一些实施例中，当PCB板包括多层层板时，各层板依次从上到下排布，PCB板的表层层板包括最上层层板、最下层层板中的至少一个层板。
在一些实施例中，PCB板仅包括一层层板，则以该层板作为表层层板。
需要说明的是，PCB板的表层层板的表层包括与其他层的层板不连接的表层。参见图2，当PCB板包括5层板时，从上到下分别为top层21、第二层22、第三层23、第四层24、bottom层25。当前表层如图2所示，为top层的外表面。当然，本领域技术人员也可以根据需要，将bottom层的外表面作为表层。
另外，在一些实例中，USB连接器的端口从表层层板的表层向外露出，以用于接纳USB线、U盘等。
需要说明的是，当PCB板包括至少两层层板时，PCB板的参考主地可以选取任意层作为参考主地。
需要说明的是，第一降低干扰结构的形状在本发明实施例中不进行限定，第一降低干扰结构的形状包括但不限于圆形、椭圆形、正方形、不规则形状等任意形状。在一些实施例中，第一降低干扰结构的形状可以根据PCB板的具体走线形式来确定。但第一降低干扰结构的所在区域必然是大于USB连接器装配所需要的区域的。
在一些实施例中，第一降低干扰结构包括将表层层板进行挖空处理得到的第一挖空位。
需要说明的是，挖空指表层PCB不覆铜，即挖空处PCB不走线，USB 连接器与表层层板的地不直接相连。挖空后的材质(即，PCB的表层被挖空的部分的材质)可以为通用的PCB板材，例如FR4。挖空后的材质也可以是其他材质，在此不做限定。
在一些实施例中，第一降低干扰结构还包括将表层层板进行挖空处理得到的第一挖空位，在第一挖空位中按预设规则铺设目标绝缘材料。
在一些实施例中，对表层层板进行挖空处理后，为使USB连接器的接地外壳的地与表层层板的地进行更好的隔离，可以在第一挖空位按照预设规则铺设目标绝缘材料。
需要说明的是目标绝缘材料可以是本领域技术人员认为可以使用的各种材料。
需要说明的是，预设规则包括但不限于以下任意一种：将第一挖空位整体全部都铺设目标绝缘材料、在第一挖空位中各个USB连接器周围的预设范围内铺设目标绝缘材料、沿第一挖空位的边缘铺设目标绝缘材料等。
在一些实施例中，第一降低干扰结构还包括滤波电路和馈点。
其中，馈点分别与USB连接器的接地外壳和滤波电路连接；滤波电路沿第一挖空位的至少一部分边缘设置；第一接地孔是滤波电路的接地孔。
需要说明的是，根据实际需要，滤波电路可以环绕第一挖空位一周设置，也可以沿第一挖空位的一部分边缘进行设置。
需要说明的是，在一些实施例中，滤波电路沿第一挖空位的至少一部分边缘进行设置可以是滤波电路紧贴着第一挖空位的边缘的至少一部分进行设置，也可以是滤波电路沿第一挖空位边缘的走向的至少一部分进行设置，但滤波电路与第一挖空位之间可以不是紧贴着，而是留有一定的距离。
参见图3，图3提供了另一种降低USB对天线干扰的装置的示意图，其中，第一降低干扰结构除包括第一挖空位304外，还包括滤波电路301和馈点302。
其中，馈点302分别与USB连接器303的接地外壳和滤波电路301连接；滤波电路301环绕第一挖空位304设置；第一接地孔305是滤波电路301的接地孔。
参见图4，图4提供了一种滤波电路装置的示意图，参见图4所示，通过馈点402将滤波电路与USB连接器连接，通过第一接地孔401连接到参考主地上。
以USB3.0为例，当USB3.0工作的时候，USB3.0的时钟频率在2.5G。众所周知，2.4GHz～2.5GHz集中了众多的通讯制式，如WIFI2.4G、蓝牙、Zigbee等，这个时候如果不对USB连接器做良好的保护，必然会影响WIFI等，最直观的影响就是天线的TIS指标下降，wifi信号变弱，信号格数变少。本实施例的滤波电路的形状如图4所示，可以有效的对2.5G左右的干扰进行滤波，滤波电路可以通过PCB上的走线来实现，根据具体的PCB的板厚，层数，及相应的介质参数，来适当调整线宽。终端设备上不同的频段的需求，例如LTE的B7，B41频段，wifi 5G频段；以及不同的USB接口，例如USB3.1，USB3.1的时钟频率为5GHz，对USB连接器的滤波电路的频段需求是有差别的，具体根据实际USB连接器支持的接口标准以及终端需要支持的无线频段，来确定需要针对哪个频段滤波。因此，滤波电路可以是1组，也可以是2组，等任意数量组，本领域技术人员可以根据需要进行设置。
需要说明的是，图4中的滤波电路的装置示意图仅是以PCB走线的微带线为示例。在一些实施例中，滤波电路还可以包括但不限于，通过阻容器件搭建的LC滤波电路、放在内层走线的带状线滤波电路等。
在一些实施例中，馈点与所述USB连接器的接地外壳的地pin连接。
需要说明的是，馈点的数量与USB连接器的外壳的地pin脚相匹配，可以是1个，2个，3个，一般是四个。馈点包括但不限于以下至少一种： 露铜、PCB走线、弹片。其中，露铜和弹片及PCB走线的形式可以是任意形状，只要能保证与USB连接器的接地外壳充分接触并连接即可。若降低USB对天线干扰的装置包括多个USB连接器，则每个USB连接器的外壳的地pin之间可以以星形连接到馈点，也可以以总线型或者环形等方式连接到馈点。
在一些实施例中，第一降低干扰结构还包括将所述表层层板进行挖空处理得到的第二挖空位；第二挖空位环绕目标区域设置，目标区域包括所述滤波电路所在区域以及所述第一挖空位所在区域。
参见图5，图5提供了另一种降低USB对天线干扰的装置的示意图，降低USB对天线干扰的装置500包括PCB板501、USB连接器502和由第一挖空位503、滤波电路504、第一接地孔505、第二挖空位506、馈点507组成的第一降低干扰结构。
其中，第一降低干扰结构位于PCB板501的表层层板的表层，USB连接器502装配于第一挖空位503所在区域之内，馈点507分别连接滤波电路504和USB连接器502，第一接地孔505为滤波电路504的地孔，第二挖空位506环绕目标区域设置，需要说明的是，目标区域包括滤波电路504所在的区域和第一挖空位503所在的区域。
需要说明的是，第一挖空位和第二挖空位分别是将表层层板进行挖空处理得到的。
在一些实施例中，当存在第二挖空位时，滤波电路也可以是沿第一挖空位的边缘的一部分设置。
在一些实施例中，PCB板包括表层层板、主地层板、至少一层中间层板。
其中，中间层板位于表层层板和主地层板之间。中间层板包括第二接地孔，第一接地孔与所第二接地孔连接，通过第一接地孔和第二接地孔将 USB连接器的接地外壳的地连接到主地层板上的参考主地。中间层板还包括第二降低干扰结构，第二降低干扰结构环绕第二接地孔设置，用于将第二接地孔的地与中间层板的其他区域的地进行隔离。
需要说明的是，主地层板为预设的参考主地所在的层板，当PCB板包括四层层板时，若表层层板为按照各层板叠放顺序的顶层层板，主地层板可以是底层层板，也可是倒数第二层层板。换句话说，主地层板可以是底层层板，也可以是从表层层板向内部数包括第三层层板在内的任意一层层板，这取决于确定哪一层作为参考主地。
在一些实施例中，第二降低干扰结构包括将中间层板进行挖空处理得到的第三挖空位。
需要说明的是，每一个第二降低干扰结构对应一个第二接地孔，每一个中间层板都包括至少一个第二接地孔。
参见图6，图6提供了另一种降低USB对天线干扰的装置的示意图，降低USB对天线干扰的装置600包括PCB板、USB连接器和由第一挖空位、滤波电路、第一接地孔601、第二挖空位、馈点组成的第一降低干扰结构。
其中PCB板包括6层层板，分别为表层层板61、第二层板62、第三层板63、第四层板64、第五层板65、底层层板66。选定第四层板64为参考主地，则第四层板即为主地层板，第二层板62和第三层板63即为中间层板。
第二层板62上包括第二接地孔A 602和第三挖空位A 605，第三层板63上包括第二接地孔B 603和第三挖空位B 604。
USB连接器602通过馈点603与滤波电路604连接，第一接地孔601为滤波电路604的地孔，通过第一接地孔601连接到第二接地孔A 602，第二接地孔B 603后进一步连接到主地层板64上的参考主地的地孔。由于第 二地孔A 602和第二地孔B 603的周围分别有第三挖空位A 605和第三挖空位B 604，使得第二地孔A 602和第二地孔B 603分别与其所在层板的地存在隔离。
需要说明的是，本发明实施例中的第一降低干扰结构、第二降低干扰结构的形状在本发明中不做限定，包括但不限于圆形、椭圆形、方形、不规则形状等。
在一些实施例中，表层层板还包括第三接地孔，其中第三接地孔位于第一降低干扰结构之外的区域，通过第三接地孔将表层层板的地与所述参考主地连接。
继续参见图6，第三接地孔606位于第一降低干扰结构之外的区域，换句话说第三接地孔位于表层层板的表面中第二挖空位之外的区域。通过第三接地孔606连接第二层板62的地孔、第三层板63的地孔后进一步连接到主地层板64上的参考主地的地孔。
需要说明的是，图6仅是对第三接地孔的位置和数量进行示意性说明，第三接地孔的具体位置和数量本领域技术人员可以根据实际需要进行调整。
下面通过一个具体的实施例，对本发明实施例所提供的降低USB对天线干扰的装置进行进一步说明。参见图7，图7提供了另一种降低USB对天线干扰的装置的示意图。
图7所示的使用USB连接器的终端设备的PCB的主板为6层板(需要说明的是，实际的终端设备可以具有任意层板，例如8层，10层等)，包括：终端设备主板PCB的top层71，主要用于放置元器件；主板PCB的第二层72，用于内层走线或者参考地；主板PCB第三层73，用于内层走线或者参考地；主板PCB第四层74，用于内层走线或者参考地；主板PCB第五层75，用于内层走线或者参考地；主板PCB的bottom层76。图7中还示出 了：USB连接器701，其可以为支持USB1.0，USB2.0，USB3.0，USB3.1等标准的USB连接器，USB连接器的形式可以为USB TYPE-A、USB TYPE-B、USB MICRO-A、USB TYPE-C；阴影部分第二挖空位705，其为USB连接器701与主板地之间的挖空隔离带，作用是对USB连接器701的地外壳和PCB主板的表层71的地进行隔离；滤波电路704，其用于滤除对应的USB的时钟信号产生的干扰；馈点703，其为滤波电路704和USB连接器701的连接馈点；第一接地孔706，其是滤波电路704的接地孔；以及第二接地孔A 707、第二接地孔B 709、参考主地接地孔711，它们为主板上对应层的地孔。
本实施例的具体的实施方法如下：
一、终端设备的主板，即PCB板，可以包括任意层，可以是一阶板，二阶板，任意阶板。以6层板为例，如图7所示，PCB板包括top层71，第二层72，第三层73，第四层74，第五层75，bottom层76。选定第四层74为参考主地(本实施例以第四层74为参考主地进行举例，实际终端产品的主板可以选取PCB的任意层为参考主地)。
二、以USB连接器701在top面为例，需要说明的是，USB连接器701也可以在bottom面，USB连接器701,可以是USB TYPE-A、USB TYPE-B、USB MICRO-A、USB TYPE-C等USB连接器，通过第二挖空位705将USB连接器701的外壳和top层71的地做隔离，第二挖空位705也即阴影部分为挖空隔离区域第二挖空位。在本实施例中，此区域示意图为椭圆环形，实际可以为任意形状，可根据PCB板具体走线形式来确定形状。需要说明的是，挖空指表层71PCB不覆铜，即挖空处PCB不走线，USB连接器701与top层71的地不直接相连即可，挖空后的材质可以为通用的PCB板材，如FR4，也可以是其他材质，
三、USB连接器701通过馈点703连接到滤波电路704，馈点703的 数量与USB连接器701的外壳的地pin脚相匹配，可以是1个，2个，3个，一般是四个。馈点703包括但不限于以下至少之一：露铜、PCB走线、弹片。其中，露铜和弹片及PCB走线的形式可以是任意形状，只要能保证与USB连接器701的接地外壳充分接触并连接即可。当包括多个USB连接器时，每个USB连接器701的外壳地pin之间可以星形连接到馈点703，也可以总线型或者环形等连接到馈点703，
四、USB连接器701的外壳的地通过第一接地孔706直接连接到参考主地接地孔711上，第一接地孔706连接到第二层72的第二接地孔A 707，第三层73的第二接地孔B 709后进一步连接到参考主地74的参考主地接地孔711，其中第二接地孔A 707与其所在层板的周边地有起隔离作用的第二降低干扰结构A 708，第二接地孔B 709与其所在层板的周边地有起隔离作用的第二降低干扰结构B 710。图7中，第二接地孔A 707、第二接地孔B 709的孔外围的带有斜线的圆环形部分示意挖空隔离，挖空的形状可以是任意形状，不局限于本实施例的圆形(环形)，也可以是方形，椭圆形等。
以USB3.0为例，当USB3.0工作的时候，USB3.0的时钟频率在2.5G。众所周知，2.4GHz～2.5GHz集中了众多的通讯制式，如WIFI2.4G、蓝牙、Zigbee等，这个时候如果不对USB连接器做良好的保护，必然会影响WIFI等，最直观的影响就是天线的TIS指标下降，wifi信号变弱，信号格数变少。本实施例的滤波电路可以有效的对2.5G左右的干扰进行滤波，滤波电路可以通过PCB上的走线来实现，根据具体的PCB的板厚，层数，及相应的介质参数，来适当调整线宽。终端设备上不同的频段的需求，例如LTE的B7，B41频段，wifi 5G频段；以及不同的USB接口，例如USB3.1，USB3.1的时钟频率为5GHz，对USB连接器的滤波电路的频段需求是有差别的，具体根据实际USB支持的接口标准以及终端需要支持的无线频段，来确定需要针对哪个频段滤波。滤波电路可以是1组，可以是2组，等任意数量组。
滤波电路包括但不限于以下至少之一：以PCB走线的微带线、通过阻容器件搭建的LC滤波电路、放在内层走线的带状线滤波电路等。
需要说明的是，本发明所有的应用可能，不局限于USB连接器，可以是耳机插孔等其他的连接器。
在相关技术中，USB连接器的外壳直接和主板的表层PCB连接之后，连接的表层地再通过地孔和其他层地相连接，然后连接到主地层。本发明通过设置第一降低干扰结构，在USB连接器所在的表层将USB连接器的外壳单独隔离，同时隔离的第一接地孔与其他层的地也隔离，直接连接到主地层的参考主地，这样既可以保护USB信号的完整性，又能有效的抑制USB数据传输过程中产生的干扰，可以有效的提升用户体验，提高产品性能。
进一步的，第一降低干扰结构还可以包括滤波电路，通过将USB连接器的外壳连接到滤波电路，然后将隔离的第一接地孔和滤波电路连接，有效的隔离了USB连接器与其它层地的连接，将信号屏蔽在USB连接器的外壳内，避免了USB的时钟信号形成的干扰。在相关技术中，该时钟信号会通过表层的接地耦合到板子的各个部分，尤其是天线的部分，进而影响到天线的接收指标，降低了TIS，导致整机的接收性能下降，通过质量变差，传输速率降低等。
本发明所提供的降低USB对天线干扰的装置可以应用于各类移动终端，例如手机，可穿戴设备，数据卡类，车载类设备，UFI类产品等所有有USB连接器的终端设备，同时适用于适用USB连接器的其他任意设备，当USB连接器工作的时候，应用本发明所提供的降低USB对天线干扰的装置，可以显著改善或者抑制USB连接器工作的时候，例如充电，或者USB高速传输数据的时候，USB时钟信号产生的干扰。有效降低USB对天线TIS的影响，用户界面的信号显示不会发生明显的下降，通话质量数据传输都有 很好的改善。
综上，应用本发明实施例所提供的降低USB对天线干扰的装置，可以显著改善USB的干扰，降低USB数据传输，尤其是USB3.0高速数据传输时对LTE频段，WIFI频段，5GNR频段，毫米波等产生的干扰，提升用户的体验度和满意度。
实施例二：
本实施例还提供了一种终端，该终端包括上述任一实施例中的降低USB对天线干扰的装置。
以上内容是结合具体的实施方式对本发明实施例所作的进一步详细说明，不能认定本发明的具体实施只局限于这些说明。对于本发明所属技术领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干简单推演或替换，都应当视为属于本发明的保护范围。

Claims (10)

  1. 一种降低USB对天线干扰的装置，包括USB连接器、第一降低干扰结构、PCB板，其中
    所述USB连接器装配于所述第一降低干扰结构所在区域之内；
    所述第一降低干扰结构位于所述PCB板的表层层板的表层，用于将所述USB连接器的接地外壳的地与所述表层层板的地进行隔离；并且
    所述第一降低干扰结构还包括第一接地孔，通过所述第一接地孔将所述USB连接器的接地外壳的地连接到所述PCB板的参考主地。
  2. 如权利要求1所述的降低USB对天线干扰的装置，其中，所述第一降低干扰结构包括将所述表层层板进行挖空处理得到的第一挖空位。
  3. 如权利要求2所述的降低USB对天线干扰的装置，其中，所述第一降低干扰结构还包括滤波电路和馈点；
    所述馈点分别与所述USB连接器的接地外壳和所述滤波电路连接；
    所述滤波电路沿所述第一挖空位的至少一部分边缘设置；
    所述第一接地孔是所述滤波电路的接地孔。
  4. 如权利要求3所述的降低USB对天线干扰的装置，其中，所述馈点与所述USB连接器的接地外壳的地pin连接。
  5. 如权利要求3所述的降低USB对天线干扰的装置，其中，所述第一降低干扰结构还包括将所述表层层板进行挖空处理得到的第二挖空位；
    所述第二挖空位环绕目标区域设置，所述目标区域包括所述滤波电路所在的区域以及所述第一挖空位所在的区域。
  6. 如权利要求1-5任一项所述的降低USB对天线干扰的装置，其特征在于，所述PCB板包括表层层板、主地层板、至少一层中间层板；
    所述中间层板位于所述表层层板和所述主地层板之间；
    所述中间层板包括第二接地孔，所述第一接地孔与所第二接地孔连接， 通过所述第一接地孔和所述第二接地孔将所述USB连接器的接地外壳的地连接到所述主地层板上的参考主地；
    所述中间层板还包括第二降低干扰结构，所述第二降低干扰结构环绕所述第二接地孔设置，用于将所述第二接地孔的地与所述中间层板的其他区域的地进行隔离。
  7. 如权利要求6所述的降低USB对天线干扰的装置，其中，所述第二降低干扰结构包括将所述中间层板进行挖空处理得到的第三挖空位。
  8. 如权利要求1-5任一项所述的降低USB对天线干扰的装置，其中，所述表层层板还包括第三接地孔，所述第三接地孔位于所述第一降低干扰结构之外的区域，通过所述第三接地孔将所述表层层板的地与所述参考主地连接。
  9. 如权利要求1所述的降低USB对天线干扰的装置，其中，所述第一降低干扰结构还包括将所述表层层板进行挖空处理得到的第一挖空位，在所述第一挖空位中按预设规则铺设目标绝缘材料。
  10. 一种终端，所述终端包括如权利要求1-9任一项所述的降低USB对天线干扰的装置。
PCT/CN2020/127416 2019-12-02 2020-11-09 降低usb对天线干扰的装置及终端 WO2021109801A1 (zh)

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