CN111709212B - Circuit board, layout method thereof and terminal equipment - Google Patents
Circuit board, layout method thereof and terminal equipment Download PDFInfo
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- CN111709212B CN111709212B CN202010555493.0A CN202010555493A CN111709212B CN 111709212 B CN111709212 B CN 111709212B CN 202010555493 A CN202010555493 A CN 202010555493A CN 111709212 B CN111709212 B CN 111709212B
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000004891 communication Methods 0.000 claims abstract description 113
- 238000010295 mobile communication Methods 0.000 claims description 25
- 238000004088 simulation Methods 0.000 claims description 11
- 238000004364 calculation method Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 description 15
- 230000002829 reductive effect Effects 0.000 description 10
- 230000005540 biological transmission Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 238000002955 isolation Methods 0.000 description 4
- 230000001629 suppression Effects 0.000 description 4
- 239000000758 substrate Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
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- 230000000452 restraining effect Effects 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/30—Circuit design
- G06F30/39—Circuit design at the physical level
- G06F30/392—Floor-planning or layout, e.g. partitioning or placement
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/30—Circuit design
- G06F30/39—Circuit design at the physical level
- G06F30/398—Design verification or optimisation, e.g. using design rule check [DRC], layout versus schematics [LVS] or finite element methods [FEM]
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2115/00—Details relating to the type of the circuit
- G06F2115/12—Printed circuit boards [PCB] or multi-chip modules [MCM]
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Abstract
The invention discloses a circuit board, a layout method thereof and terminal equipment, relates to the technical field of electronic equipment, and solves the problems that the layout of the circuit board is difficult and electromagnetic interference is easy to generate due to the fact that the number of radio frequency antennas on the circuit board is large. The main technical scheme of the invention is as follows: comprising the following steps: the device comprises a body, a first module and a second module, wherein the body comprises a first area and a second area, the second area is arranged at the periphery of the first area, the first area is used for arranging a core board and a plurality of functional modules distributed at the periphery of the core board, and the second area is used for arranging a plurality of interfaces; the functional modules at least comprise a plurality of communication modules, the periphery of each communication module is respectively provided with an antenna area, and the communication modules are in communication connection with the corresponding antenna areas; the antenna areas corresponding to any two adjacent communication modules are respectively arranged at the periphery of the non-adjacent side edges of the two communication modules.
Description
Technical Field
The present invention relates to the field of electronic devices, and in particular, to a circuit board, a layout method thereof, and a terminal device.
Background
Wireless communication technology is increasingly being used in printed circuit boards (Printed Circuit Board, PCB) in various fields, and because Radio Frequency (RF) signals are a significant part of the PCB, the layout of their components can affect the operation of the system. The terminal equipment can adopt the 5G communication module to strengthen the data transmission speed to realize the enhancement of system, set up 5G communication module and need carry on multichannel radio frequency antenna on the circuit board, and in terminal equipment, the circuit board size is limited, therefore the degree of difficulty of radio frequency circuit design is great in the limited space, produces electromagnetic interference easily between multichannel radio frequency antenna.
Disclosure of Invention
In view of the above, the embodiments of the present invention provide a circuit board, a layout method thereof, and a terminal device, which mainly solve the problem that the layout of the circuit board is difficult and electromagnetic interference is easy to generate due to the large number of radio frequency antennas on the circuit board. In order to achieve the above purpose, the present invention mainly provides the following technical solutions:
in one aspect, an embodiment of the present invention provides a circuit board, including: the device comprises a body, a first module and a second module, wherein the body comprises a first area and a second area, the second area is arranged at the periphery of the first area, the first area is used for arranging a core board and a plurality of functional modules distributed at the periphery of the core board, and the second area is used for arranging a plurality of interfaces;
the functional modules at least comprise a plurality of communication modules, the periphery of each communication module is respectively provided with an antenna area, and the communication modules are in communication connection with the corresponding antenna areas;
the antenna areas corresponding to any two adjacent communication modules are respectively arranged at the periphery of the non-adjacent side edges of the two communication modules.
Optionally, at least part of the antenna area of the communication module is disposed near an edge of the first area.
Optionally, the antenna area includes a plurality of feeding points, at least a portion of the feeding points are disposed along a side of the communication module, and a preset distance is spaced between adjacent feeding points.
Optionally, the preset distance between adjacent feeding points is 5mm.
Optionally, the communication module includes a mobile communication module and a wireless communication module, and the number of the mobile communication modules is a plurality of.
Optionally, the plurality of interfaces at least includes: the system comprises a power interface, a battery interface, a plurality of SIM card holders, an Ethernet interface, a USB interface, a TF card holder and a serial port debugging interface;
Wherein at least part of the interfaces are arranged at the edge of the same side of the second area, and the number of the SIM card seat components is the same as that of the mobile communication modules.
Optionally, the functional module at least further includes: an ethernet module and a power module;
Wherein the Ethernet module is arranged close to the Ethernet interface, and the power supply module is close to the battery interface and/or the power supply interface.
On the other hand, the embodiment of the invention provides a layout method of a circuit board, which comprises the following steps: determining the arrangement position of the core board in the first area according to the shortest routing principle between each functional module and the core board;
Determining each functional module and the arrangement position of an antenna area corresponding to a communication module in the functional module according to the interface position of the second area of the body and a preset layout rule;
the preset layout rule is used for improving at least one preset performance of the functional module, and the preset performance at least comprises anti-interference performance.
Optionally, the method further comprises: according to the arrangement position of the antenna area, obtaining an optimal value of the distance between two adjacent feed points of the antenna area through simulation calculation;
wherein, the optimal value of the distance between two adjacent feed points of the antenna area is 5mm.
In another aspect, an embodiment of the present invention provides a terminal device, including: the circuit board.
The circuit board is arranged in a shell of the terminal equipment, the body of the circuit board comprises a first area and a second area, the second area is arranged around the periphery of the first area and is used for arranging a plurality of interfaces, the first area is used for arranging a core board and a plurality of functional modules, and in order to reduce the wiring length between each functional module and the core board, the functional modules are arranged on the periphery of the core board, so that the effects of reducing the signal wiring length between each functional module and the core board and considering electromagnetic compatibility are achieved; the functional modules at least comprise communication modules, the number of the communication modules is a plurality, the periphery of the communication modules is provided with antenna areas for arranging and installing multipath radio frequency antennas, the radio frequency antennas are arranged on a shell of the terminal equipment, and the body size of the circuit board is limited, so that the antenna areas of the adjacent communication modules are distributed as far as possible, and the antenna areas are distributed on the non-adjacent sides of the two adjacent communication modules, so that the distance between the antenna areas can be increased as much as possible in a limited arrangement space, electromagnetic interference between the multipath radio frequency antennas is avoided, and the effects of reducing system noise, improving the inhibiting capability of radio frequency signals and reducing signal distortion are achieved.
Drawings
Fig. 1 is a schematic structural diagram of a circuit board according to an embodiment of the present invention;
Fig. 2 is a schematic structural diagram of a circuit board according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a communication module and an antenna area of a circuit board according to an embodiment of the present invention;
Fig. 4 is a schematic diagram of a feeding point arrangement of an antenna area of a circuit board according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a terminal device according to an embodiment of the present invention;
fig. 6 is a flowchart illustrating a layout method of a circuit board according to an embodiment of the present invention;
In the figure: the circuit board 100, the first area 11, the core board 111, the communication module 112, the mobile communication module 1121, the wireless communication module 1122, the radio frequency pin 1120, the ethernet module 113, the power module 114, the second area 12, the power interface 121, the battery interface 122, the SIM card holder 123, the ethernet interface 124, the USB interface 125, the TF card holder 126, the serial debug interface 127, the antenna area 13, the feeding point 131, the terminal device 200, the first surface 21, the second surface 22, and the third surface 23.
Detailed Description
In order to further describe the technical means and effects adopted by the invention to achieve the preset aim, the following is a detailed description of the circuit board, the layout method thereof, the terminal device, the specific implementation, the structure, the characteristics and the effects thereof according to the invention with reference to the accompanying drawings and the preferred embodiment.
Example 1
Referring to fig. 1-5, a first embodiment of the present invention proposes a circuit board 100, the circuit board 100 comprising: the body comprises a first area 11 and a second area 12, wherein the second area 12 is arranged at the periphery of the first area 11, the first area 11 is used for arranging a core board 111 and a plurality of functional modules distributed at the periphery of the core board 111, and the second area 12 is used for arranging a plurality of interfaces; the functional modules at least comprise a plurality of communication modules 112, wherein the number of the communication modules 112 is plural, the periphery of each communication module 112 is respectively provided with an antenna area 13, and the communication modules 112 are in communication connection with the corresponding antenna areas 13; the antenna areas 13 corresponding to any two adjacent communication modules 112 are respectively disposed at the peripheries of non-adjacent sides of the two communication modules 112.
Specifically, the circuit board 100 proposed in the present embodiment may be used for the wireless communication terminal device 200, and the body thereof is disposed inside the housing of the terminal device 200; the body comprises a first region 11 and a second region 12, the second region 12 being arranged around the periphery of the first region 11 for arranging a plurality of interfaces, for example: a power interface, a USB interface, a SIM card holder, etc., each of which is disposed at an outer edge of the second region 12, respectively; The first area 11 is an arrangeable area of each device on the circuit board 100, for arranging the core board 111 and a plurality of functional modules, where the plurality of functional modules may include: the power module, the communication module 112, and the like, each functional module needs to be connected to the core board 111 to implement processes such as data transmission, so, in order to reduce the length of the wires between each functional module and the core board 111, the core board 111 should be disposed in a position relatively centered with respect to the functional module in the first area 11, where the core board 111 is not limited to be disposed in a central position of the first area 11, but a plurality of functional modules may be disposed on the periphery of the core board 111, So as to reduce the signal wiring length between each functional module and the core board 111 and also achieve the effect of electromagnetic compatibility; the functional modules at least comprise communication modules 112, the number of the communication modules 112 is a plurality, and an antenna area 13 is arranged at the periphery of the communication modules 112 and is used for arranging and installing radio frequency antennas so as to realize the transmission and the reception of electromagnetic waves; The communication module 112 may include a mobile communication module 112, specifically, the data transmission rate of the system of the terminal device 200 may be enhanced by using the 5G communication module 112, and the number of radio frequency antennas carried by the system is greatly increased by using the 5G communication module, for example: referring to fig. 2, the first area 11 is provided with 3 mobile communication modules 112, specifically, 5G communication modules 112, and each mobile communication module 112 carries 7 paths of radio frequency antennas, which results in a larger number of carried antennas in the first area 11, and a limited installation space of the body in the terminal device 200, so that the size of the body is limited, which results in a larger difficulty in layout of each module in the first area 11, Electromagnetic interference is easy to generate among the multipath radio frequency antennas; in order to reduce interference between multiple radio frequency antennas and improve electromagnetic compatibility of the first area 11, special circuit layout needs to be performed in the first area 11, in the technical scheme adopted by the invention, the antenna area 13 of the communication module 112 adopts FPC antennas, and when the communication module 112 is arranged, arrangement of a plurality of FPC antennas on a casing of the terminal device 200 needs to be considered, so that the arrangeable positions of the plurality of communication modules 112102 need to be determined according to the settable positions of the antenna area 13, and on the basis, the plurality of communication modules 112 are arranged separately as much as possible, so as to reduce the probability of being interfered, further, When the antenna areas 13 are arranged, the antenna areas 13 of the adjacent communication modules 112 should be distributed as far as possible, so that the antenna areas are distributed on non-adjacent sides of the two adjacent communication modules 112, and the distance between the antenna areas 13 is increased as much as possible in a limited arrangement space, so as to avoid electromagnetic interference between multiple paths of radio frequency antennas, thereby being beneficial to reducing system noise, improving the suppression capability of radio frequency signals and reducing signal distortion.
Specifically, when the arrangement positions of the plurality of communication modules 112 on the body of the circuit board 100 are decided by considering the factors of arrangement of the plurality of FPC antennas on the chassis of the terminal device 200, a specific arrangement method is as follows: referring to fig. 2 and 5, according to the arrangement of the plurality of interfaces of the second area 12 in fig. 2, since most of the interfaces are arranged on the surface of the housing of the terminal device 200 opposite to the first surface 21, the radio frequency antenna cannot be arranged on the surface opposite to the first surface 21, and the rest of the surface of the housing of the terminal device 200, since the surface of the housing of the terminal device 200 opposite to the second surface 22 is covered by the body of the circuit board 100, the radio frequency antenna cannot be arranged on the surface opposite to the second surface 22, and as such according to the arrangement position of the core board 111 in fig. 2, since the core board 111 is arranged in such a way as to be superimposed on the body of the circuit board 100, plus the device surface height is too high, the antenna, if arranged on the first surface 21, the transmission line will bridge over the body, and therefore the first surface 21 of the housing of the terminal device 200 cannot be used for arranging the antenna, and therefore only the second surface 22, the third surface 23 and the surface opposite to the third surface 23 of the housing of the terminal device 200 can be used for arranging the antenna, and therefore the communication between the first and second surface and the side edges of the module 112 can be increased, and the communication between the side edges of the module 112 can be made to be as close to the side edges of the first surface and the second surface and the side edges of the module 112, and the communication area can be made to be as small as possible, and the side edges of the communication area can be relatively close to the side edges of the communication area 13; the above-described embodiment is only one possible implementation, and the interface position of the second area 12, the position of the core board 111 of the first area 11, and the arrangement surface of the radio frequency antenna on the terminal device 200 are not limited to the above-described example, and are not particularly limited herein, and may be specifically set in the above-described manner according to actual situations.
According to the above-mentioned embodiments, the circuit board 100 is provided, the main body of the circuit board 100 includes a first area 11 and a second area 12, the second area 12 is disposed around the periphery of the first area 11, and is used for arranging a plurality of interfaces such as a power interface and a USB interface, the first area 11 is used for arranging a core board 111 and a plurality of functional modules, in order to reduce the length of the wires between each functional module and the core board 111, the core board 111 should be disposed in a relatively central position of the first area 11 with respect to the functional modules, and the plurality of functional modules are arranged on the periphery of the core board 111, so as to achieve the effects of reducing the signal wire length between each functional module and the core board 111 and also achieving electromagnetic compatibility; the functional modules at least comprise communication modules 112, the number of the communication modules 112 is a plurality, the periphery of each communication module 112 is provided with an antenna area 13 for arranging and installing multiple paths of radio frequency antennas, in order to reduce interference among the multiple paths of radio frequency antennas under the limited size of the body, the arrangeable positions of the communication modules 112 are determined according to the arrangeable positions of the antenna areas 13, the communication modules 112 are separated and arranged as far as possible, so that the probability of being interfered is reduced, the antenna areas 13 of the adjacent communication modules 112 are distributed as far as possible, and the antenna areas are distributed on the non-adjacent side edges of the two adjacent communication modules 112, so that the distance among the antenna areas 13 can be increased as far as possible in the limited arrangement space, electromagnetic interference among the multiple paths of radio frequency antennas is avoided, the effects of reducing system noise, improving the restraining capability of radio frequency signals and reducing signal distortion are achieved.
Further, referring to fig. 2, in an embodiment, at least a portion of the antenna area 13 of the communication module 112 is disposed near an edge of the first area 11.
Specifically, in order to achieve the effect of reducing radiation by connecting the rf antenna nearby, in the technical scheme adopted in the present invention, the communication module 112 adjacent to the edge of the first area 11 should set the antenna area 13 close to or even close to the edge of the corresponding first area 11, so that on one hand, the rf antenna can be arranged on the housing of the terminal device 200 nearby, to achieve the effect of reducing radiation by connecting nearby, and on the other hand, the space between the antenna areas 13 of the adjacent communication modules 112 can be increased, so as to further reduce the probability of being interfered.
Further, referring to fig. 2, in an embodiment, the antenna area 13 includes a plurality of feeding points 131, at least some of the feeding points 131 are disposed along a side of the communication module 112, and a predetermined distance is provided between adjacent feeding points.
Specifically, after determining the arrangement positions of the plurality of communication modules 112 and the corresponding antenna areas 13 of the functional modules, the layout of the radio frequency antennas in the antenna areas 13 should be determined specifically, in the technical scheme adopted by the invention, the antenna areas 13 include a plurality of feed points 131, the feed points 131 are access positions of the radio frequency antennas, the communication modules 112 have radio frequency pin feet 1120 corresponding to the plurality of feed points 131, and generally when designing a radio frequency circuit, related devices such as the feed points 131 and the corresponding radio frequency pin feet 1120 need to be in a linear layout, signal reflection is avoided through the linear layout, signal level value is reduced, but if the linear layout is adopted, the distance between the adjacent feed points 131 is basically 0, so that crosstalk between high frequency signals is serious, therefore, the scheme adopts a non-linear layout mode, the preset distance between the adjacent feed points 131 is ensured, but at least part of the feed points 131 are arranged along one side of the communication module 112, namely the distance between the adjacent feed points 131 is increased, the maximum degree of the crosstalk between signals is ensured, meanwhile, the loss of the radio frequency antennas is reduced to the minimum, and the distance between the feed points 1120 and the corresponding radio frequency pin feet 131 is reduced; the predetermined distance may be obtained by a simulation calculation method, which will be described in detail below.
Further, referring to fig. 4, in an implementation, the preset distance between the adjacent feeding points 131 is 5mm.
Specifically, in the technical solution adopted in the present invention, according to the layout of the multiple feeding points 131 of the antenna area 13, the positions of the feeding points 131, that is, the intervals between the adjacent feeding points 131, may be determined by a simulation calculation method, and the optimal value of the preset distance between the adjacent feeding points 131 may be determined, referring to fig. 4, the distance Y1 between the adjacent rf pin 1120 of the communication module 112 is known, the distance Y2 between the adjacent feeding points 131 and the linear distance X between the feeding points 131 and the corresponding rf pin 1120 may be determined, a matching circuit may be required to be disposed between the antenna area 13 and the communication module, and the vertical distance between the antenna area 13 and the communication module may be determined according to the matching circuit, so that the distance Y2 between the adjacent feeding points 131 may be obtained by a simulation calculation, and the linear distance X between the feeding points 131 and the corresponding rf pin 1120 may be calculated according to the vertical distance between the antenna area 13 and the communication module; the following illustrates a method of obtaining an optimal value of the distance Y2 between adjacent feeding points 131, first determining parameters required for modeling, for example: the working frequency of the radio frequency antenna is 5GHz, the bandwidth is 20MHz, an FR-4 substrate is used, the thickness of the substrate is 1.0mm, the thickness of a copper sheet on the substrate is 70u, the conductivity of copper is 5.88E7, the dielectric coefficient is 4.4, the dielectric loss angle is 0.025 (the above data are only examples and are not limiting), the feeding points 131 and the filter circuit are modeled and simulated based on the above parameters, the distance between two adjacent feeding points 131 is increased by 1mm, the return loss and the isolation degree of the obtained result are compared, through simulation test, when the distance Y2 between the adjacent feeding points 131 is 5mm, the isolation degree meets the design index, meanwhile, the shorter feeder line routing length is ensured, the loss is reduced, and the in-band attenuation is also better, so that the preset distance between the adjacent feeding points 131 is set to be 5mm.
Further, referring to fig. 2, in an embodiment, the communication module 112 includes a mobile communication module 1121 and a wireless communication module 1122, and the number of the mobile communication modules 1121 is plural.
Specifically, in the technical scheme adopted in the invention, the communication module 112 includes a mobile communication module 1121 and a wireless communication module 1122, wherein the mobile communication module 1121 may be a 5G communication module to achieve the effects of enhancing the system and enhancing the data transmission rate, the number of the mobile communication modules 1121 may be multiple, the wireless communication module 1122 may be a WIFI module to achieve wireless communication, the number of radio frequency antennas carried by the 5G communication module is greater than that of the WIFI module, but the arrangement mode is the same, referring to fig. 2,3 mobile communication modules 1121 and 1 wireless communication module 1122 may be adopted, and 3 mobile communication modules 1121 with the same function may be arranged in a certain range as far as possible, so as to reduce the signal loop area.
Further, referring to fig. 1, in an implementation, the plurality of interfaces at least includes: a power interface 121, a battery interface 122, a plurality of SIM cartridges 123, an ethernet interface 124, a USB interface 125, a TF cartridge 126, and a serial port debug interface 127; wherein at least part of the interfaces are arranged on the same side of the second area 12, and the number of the SIM card holders 123 is the same as the number of the mobile communication modules 1121.
Specifically, in the technical solution adopted in the present invention, the second area 12 is used to arrange a plurality of interfaces, where the plurality of interfaces may include, but are not limited to, the following interfaces: a power interface 121, a battery interface 122, a plurality of SIM cards 123, an ethernet interface 124, a USB interface 125, a TF card holder 126, and a serial port debug interface 127, wherein, referring to fig. 1, part of the interfaces may be arranged on the same side of the second area 12, for example: the power interface 121, the serial port debug interface 127, the plurality of SIM cards 123, and the ethernet interface 124 may be disposed on the same side of the second region 12, but is not limited thereto; since each mobile communication module 1121 needs USB for driving, the number of SIM cards 123 is equal to the number of mobile communication modules 1121, and the USB wires should be considered as short as possible during layout, and the USB wires are routed in a tape-like manner during regular routing, and distributed in different layers of the rf antenna, so as to ensure signal integrity.
Further, referring to fig. 2, in an implementation, the functional module at least further includes: an ethernet module 113 and a power module 114; wherein the ethernet module 113 is disposed proximate to the ethernet interface 124, and the power module 114 is disposed proximate to the battery interface 122 and/or the power interface 121.
Specifically, in the technical solution adopted in the present invention, at least the ethernet module 113 and the power module 114 are further included in the functional modules, and the ethernet module 113 and the power module 114 are disposed in the first area 11 of the body of the circuit board 100, so that the ethernet module 113 is disposed as close to the ethernet interface 124 as possible, and the power module 114 is disposed as close to at least one of the battery interface 122 and the power interface 121 as possible, for example: referring to fig. 2, the power module 114 is disposed corresponding to the battery interface 122 and is closer to the power interface 121; the ethernet module 113 is used for program and video transmission and updating, and during operation, the ethernet interface 124 receives signals, and the ethernet module 113 processes signals.
Further, in setting the position of the power outlet, it is considered to reduce the common channel distance between the power outlet and each mobile communication module 1121 as much as possible, so as to avoid the noise and ripple generated by one mobile communication module 1121 from being conducted to other mobile communication modules 1121 through the common portion, and simultaneously, to increase the multiple GND shields in the antenna area 13 corresponding to each mobile communication module 1121, so as to provide a shortest path for the ground pad of each mobile communication module 1121 to connect with the ground plane.
Example two
Referring to fig. 6, a second embodiment of the present invention provides a layout method of a circuit board, which is applied to the circuit board 100, and the layout method of the circuit board includes:
S1: determining the arrangement position of the core board 111 of the first area 11 according to the shortest routing principle between each functional module and the core board 111;
Specifically, the body of the circuit board 100 includes a first area 11 and a second area 12, the first area 11 is used for arranging the core board 111 and a plurality of functional modules, and each functional module needs to be connected with the core board 111 to implement processes such as data transmission, so the positions of the core board 111 should be arranged according to the principle of reducing the length of the routing between each functional module and the core board 111 as much as possible, which can be specifically: the core board 111 is disposed in the first area 11 at a relatively central position with respect to the functional modules, and the method is not limited to the method in which the core board 111 is disposed in the central position of the first area 11, but a plurality of functional modules are disposed on the periphery of the core board 111, so that the signal routing length between each functional module and the core board 111 can be reduced, and the effect of electromagnetic compatibility can be achieved.
S2: determining each function module and the arrangement position of the antenna area 13 corresponding to the communication module 112 in the function module according to the interface position of the second area 12 of the body and the preset layout rule; the preset layout rule is used for improving at least one preset performance of the functional module, and the preset performance at least comprises anti-interference performance.
Specifically, in the technical solution adopted in the present invention, the antenna area 13 of the communication module 112 adopts FPC antennas, and when the communication module 112 is arranged, the arrangement of a plurality of FPC antennas on the housing of the terminal device 200 needs to be considered, so that the arrangeable positions of a plurality of communication modules 112 need to be determined according to the arrangeable positions of the antenna area 13, and on the basis, a preset layout rule is set, so that the layout of the functional modules can obtain at least one performance improvement, for example: the preset performance may include anti-interference performance, and through the layout of the multiple functional modules in the limited space, the anti-interference performance of the multiple functional modules may be improved, so as to reduce crosstalk, and for this purpose, the adopted layout scheme may be to separate the multiple communication modules 112 as far as possible, so as to reduce the probability of being interfered, and further, when the antenna areas 13 are arranged, the antenna areas 13 of the adjacent communication modules 112 should be distributed as far as possible, so that the antenna areas are distributed on non-adjacent sides of the two adjacent communication modules 112, so that the distance between the antenna areas 13 is increased as much as possible in the limited arrangement space, so as to avoid electromagnetic interference between multiple radio frequency antennas, thereby helping to reduce system noise, improve the suppression capability of radio frequency signals, and reduce signal distortion.
According to the above-mentioned embodiments, the present invention provides a layout method of a circuit board, which includes determining a position of a core board 111 in a first area 11 of a body of the circuit board 100, setting the core board 111 in a relatively central position with respect to functional modules in the first area 11, and arranging a plurality of functional modules on a periphery of the core board 111, so as to reduce a signal trace length between each functional module and the core board 111 and achieve an effect of electromagnetic compatibility; in order to reduce interference among multiple radio frequency antennas under the limited size of the body, the arrangeable positions of the multiple communication modules 112 are determined according to the arrangeable positions of the antenna areas 13, and preset layout rules are set, so that at least the improvement of the anti-interference performance of the functional modules is ensured, the multiple communication modules 112 are arranged separately as far as possible, the probability of being interfered is reduced, the antenna areas 13 of the adjacent communication modules 112 are distributed as far as possible away from each other, and the antenna areas 13 are distributed on the non-adjacent sides of the two adjacent communication modules 112, so that the distance among the antenna areas 13 can be increased as far as possible in a limited arrangement space, electromagnetic interference among the multiple radio frequency antennas is avoided, and the effects of reducing system noise, improving the suppression capability of radio frequency signals and reducing signal distortion are achieved.
Further, referring to fig. 2, in an implementation, the layout method of the circuit board further includes S3: according to the arrangement position of the antenna area 13, obtaining an optimal value of the distance between two adjacent feed points 131 of the antenna area 13 through simulation calculation; wherein the optimal value of the distance between two adjacent feeding points 131 of the antenna area 13 is 5mm.
Specifically, in the technical scheme adopted by the invention, the antenna area 13 comprises a plurality of feeding points 131, the feeding points 131 are access positions of the radio frequency antenna, the communication module 112 is provided with radio frequency pin feet 1120 corresponding to the plurality of feeding points 131, the scheme adopts a nonlinear layout mode to ensure that the adjacent feeding points 131 are spaced by a preset distance, but at least part of the feeding points 131 are arranged along one side of the communication module 112, namely, the distance between the adjacent feeding points 131 is increased, the crosstalk between signals is reduced, the loss of the radio frequency antenna is minimized, and the distance between the feeding points 131 and the corresponding radio frequency pin feet 1120 is reduced to the greatest extent; the optimal value of the preset distance between the adjacent feed points 131 can be determined through a simulation calculation mode (the specific simulation method is described in detail in the embodiment above), related parameters are firstly determined, the feed points 131 and the filter circuit are modeled, simulation is performed, the distance between the adjacent two feed points 131 is progressive with a certain distribution length, the return loss and the isolation of the obtained result are compared, through a simulation test, when the distance between the adjacent feed points 131 is 5mm, the isolation meets the design index, meanwhile, the shorter feed line routing length is ensured, the loss is reduced, and the in-band attenuation is better, so that the optimal value of the distance between the adjacent two feed points 131 of the antenna area 13 is set to be 5mm.
Example III
Referring to fig. 5, a second embodiment of the present invention proposes a terminal device 200, the terminal device 200 comprising: the circuit board 100 described above.
Specifically, the terminal device 200 may be a terminal with a wireless communication function, and the structure of the terminal device includes a housing outside the terminal device and a circuit board 100 disposed inside the housing, where the circuit board 100 includes a plurality of interfaces and core boards 111, and a plurality of functional modules, and the communication modules 112 in the plurality of functional modules are mounted with a multi-path FPC antenna and are disposed on the housing of the terminal device 200.
According to the above-mentioned embodiments, the terminal device 200 is provided, the circuit board 100 is disposed inside the housing of the terminal device 200, the body of the circuit board 100 includes a first area 11 and a second area 12, the second area 12 is disposed around the periphery of the first area 11, and is used for disposing a plurality of interfaces, the first area 11 is used for disposing a core board 111 and a plurality of functional modules, and in order to reduce the length of the routing between each functional module and the core board 111, the plurality of functional modules are disposed on the periphery of the core board 111, so as to achieve the effects of not only reducing the signal routing length between each functional module and the core board 111, but also considering electromagnetic compatibility; the functional modules at least comprise communication modules 112, the number of the communication modules 112 is a plurality, the periphery of the communication modules 112 is provided with antenna areas 13 for arranging and installing multipath radio frequency antennas, the radio frequency antennas are arranged on the shell of the terminal equipment 200, and the antenna areas 13 of the adjacent communication modules 112 are distributed as far as possible by being distributed as far as possible, so that the distance between the antenna areas 13 can be increased as much as possible in a limited arrangement space, electromagnetic interference among the multipath radio frequency antennas is avoided, and the effects of reducing system noise, improving the suppression capability of radio frequency signals and reducing signal distortion are achieved.
It should be noted that, in the description of the present specification, the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element in question must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present invention; the terms "coupled," "mounted," "secured," and the like are to be construed broadly, and may be fixedly coupled, detachably coupled, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present specification, the terms "one embodiment," "some embodiments," "particular embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. A circuit board, comprising:
The device comprises a body, wherein the body comprises a first area and a second area arranged at the periphery of the first area, the first area is used for arranging a core board and a plurality of functional modules distributed at the periphery of the core board, the arrangement position of the core board meets the shortest routing principle between each functional module and the core board, and the second area is used for arranging a plurality of interfaces;
the functional modules at least comprise a plurality of communication modules, the periphery of each communication module is respectively provided with an antenna area, and the communication modules are in communication connection with the corresponding antenna areas;
The antenna areas corresponding to any two adjacent communication modules are respectively arranged on the peripheries of non-adjacent sides of the two communication modules, and at least part of the antenna areas of the communication modules are arranged close to the edge of the first area so as to at least improve the anti-interference performance of the functional module.
2. The circuit board of claim 1, wherein the circuit board is configured to,
The antenna area comprises a plurality of feeding points, at least part of the feeding points are arranged along one side edge of the communication module, and the adjacent feeding points are spaced by a preset distance.
3. The circuit board of claim 2, wherein the circuit board is configured to,
The preset distance between the adjacent feed points is 5mm.
4. The circuit board of claim 3, wherein,
The communication module comprises a mobile communication module and a wireless communication module, and the number of the mobile communication modules is a plurality of.
5. The circuit board of claim 4, wherein the circuit board is further configured to,
The plurality of interfaces at least comprises: the system comprises a power interface, a battery interface, a plurality of SIM card holders, an Ethernet interface, a USB interface, a TF card holder and a serial port debugging interface;
Wherein at least part of the interfaces are arranged at the edge of the same side of the second area, and the number of the SIM card seat components is the same as that of the mobile communication modules.
6. The circuit board of claim 5, wherein the circuit board is further configured to,
The functional module at least further comprises: an ethernet module and a power module;
Wherein the Ethernet module is arranged close to the Ethernet interface, and the power supply module is close to the battery interface and/or the power supply interface.
7. A layout method of a circuit board, applied to the circuit board of any one of claims 1 to 6, comprising:
determining the arrangement position of the core board in the first area according to the shortest routing principle between each functional module and the core board;
Determining each functional module and the arrangement position of an antenna area corresponding to a communication module in the functional module according to the interface position of the second area of the body and a preset layout rule;
The preset layout rule is used for improving at least one preset performance of the functional module, and the preset performance at least comprises anti-interference performance.
8. The layout method of a circuit board according to claim 7, further comprising:
according to the arrangement position of the antenna area, obtaining an optimal value of the distance between two adjacent feed points of the antenna area through simulation calculation;
wherein, the optimal value of the distance between two adjacent feed points of the antenna area is 5mm.
9. A terminal device, comprising:
The circuit board of any one of claims 1-6.
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| CN202010555493.0A CN111709212B (en) | 2020-06-17 | 2020-06-17 | Circuit board, layout method thereof and terminal equipment |
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| CN202010555493.0A CN111709212B (en) | 2020-06-17 | 2020-06-17 | Circuit board, layout method thereof and terminal equipment |
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| CN112540717B (en) * | 2020-12-11 | 2022-05-31 | 维沃移动通信有限公司 | Touch method, device and storage medium |
| CN113535636A (en) * | 2021-06-30 | 2021-10-22 | 成都中微达信科技有限公司 | Computing device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106450754A (en) * | 2016-09-20 | 2017-02-22 | 北京小米移动软件有限公司 | Wireless access device |
| CN209748588U (en) * | 2019-06-30 | 2019-12-06 | 深圳市天泰科科技发展有限公司 | Portable dual-frequency gateway |
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| CN102123523A (en) * | 2011-02-24 | 2011-07-13 | 宇龙计算机通信科技(深圳)有限公司 | Mobile terminal |
| CN106935960B (en) * | 2015-12-29 | 2020-04-14 | 华为技术有限公司 | Antenna unit, MIMO antenna and terminal |
| CN107438021A (en) * | 2017-08-03 | 2017-12-05 | 李颖聪 | A kind of zone controller based on zigbee wireless networks |
| CN208547864U (en) * | 2018-07-17 | 2019-02-26 | 深圳市华宇现代科技有限公司 | A kind of warm and humid control system circuit plate layout structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106450754A (en) * | 2016-09-20 | 2017-02-22 | 北京小米移动软件有限公司 | Wireless access device |
| CN209748588U (en) * | 2019-06-30 | 2019-12-06 | 深圳市天泰科科技发展有限公司 | Portable dual-frequency gateway |
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