CN113178697B - Circuit board and electronic equipment - Google Patents
Circuit board and electronic equipment Download PDFInfo
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- CN113178697B CN113178697B CN202110387347.6A CN202110387347A CN113178697B CN 113178697 B CN113178697 B CN 113178697B CN 202110387347 A CN202110387347 A CN 202110387347A CN 113178697 B CN113178697 B CN 113178697B
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- 239000000758 substrate Substances 0.000 claims abstract description 98
- 239000002184 metal Substances 0.000 claims abstract description 66
- 229910052751 metal Inorganic materials 0.000 claims abstract description 66
- 230000005540 biological transmission Effects 0.000 claims abstract description 21
- 150000002739 metals Chemical class 0.000 abstract 1
- 238000000034 method Methods 0.000 description 11
- 238000004891 communication Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 238000005259 measurement Methods 0.000 description 6
- 230000001154 acute effect Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 229920000106 Liquid crystal polymer Polymers 0.000 description 3
- 239000004977 Liquid-crystal polymers (LCPs) Substances 0.000 description 3
- 239000004642 Polyimide Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229920001721 polyimide Polymers 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
- H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
- H01Q5/342—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes
- H01Q5/357—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes using a single feed point
- H01Q5/364—Creating multiple current paths
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/50—Feeding or matching arrangements for broad-band or multi-band operation
Landscapes
- Waveguide Aerials (AREA)
Abstract
The application discloses a circuit board and electronic equipment, and belongs to the technical field of electronic equipment. The circuit board comprises a first substrate layer, a second substrate layer and a third substrate layer; the antenna comprises a first substrate layer, a second substrate layer, a first antenna unit and a second antenna unit, wherein the first substrate layer is provided with a metal ground and at least two antenna units, each antenna unit is provided with a first feed contact point, each antenna unit is isolated from the metal ground through a first groove, and each antenna unit is provided with a second groove; the second substrate layer is provided with a metal ground, an insulating part for isolating the metal ground from each antenna unit, at least two second feed contact points corresponding to the first feed contact points and at least two transmission lines; the third substrate layer is provided with a metal ground and at least two contact points; all metals are grounded in common. Through setting up isolated antenna unit of first groove and metal ground, increase the path length of the electric current of the work frequency channel of antenna unit through the second groove, reduce the area of antenna unit, and then reduce the space that the antenna occupy.
Description
Technical Field
The application belongs to the technical field of electronic equipment, and particularly relates to a circuit board and electronic equipment.
Background
With the development of 5G communication technology, the era of universal interconnection is coming, and users have more and more functional requirements on electronic devices, for example, higher requirements on convenience, intelligence and the like of the electronic devices are put forward. An important application of the electronic device is indoor positioning and ranging, and a technology for realizing the functions is Ultra Wide Band (UWB) technology, which has high requirements on the performance of the antenna, including broadband, phase characteristics, group delay in space angle, and the like of the antenna.
Therefore, in order to obtain better characteristics, a plurality of patch antennas are generally arranged on a flexible circuit board, and because the free space wavelength corresponding to the working frequency point of the UWB antenna is close to 38mm, the positioning of the UWB antenna often needs a plurality of antennas to be combined, and the antennas need a larger empty space, so that a larger space of the electronic device needs to be occupied.
Meanwhile, the electronic equipment is sensitive to the thickness of the whole device, the thickness of the flexible circuit board is thinner, the bandwidth of an antenna is narrower, and a single wave band (Channel) of UWB needs to be covered by 500MHz, so that the peak efficiency of resonance is higher, the edge efficiency of the frequency band is lower, namely the gain difference of each frequency in the whole band is larger, the larger the gain is, the relative conduction power is reduced, and the communication distance and effect of the whole UWB system are affected.
Disclosure of Invention
The embodiment of the application provides a circuit board and electronic equipment, which can solve the problems that an antenna needs to occupy a larger space of the electronic equipment when the existing electronic equipment is positioned, and the conduction power is reduced due to larger gain, so that the communication distance and effect of the whole UWB system are affected.
In order to solve the technical problems, the application is realized as follows:
in a first aspect, a circuit board is provided, comprising: a first substrate layer, a second substrate layer, and a third substrate layer;
the antenna comprises a first substrate layer, a second substrate layer, at least two antenna units, a first feeding contact point, a second feeding contact point and a third feeding contact point, wherein the first substrate layer is provided with metal grounds and at least two antenna units, metal grounds are arranged between any two antenna units, the first feeding contact point is arranged on each antenna unit, the antenna units are isolated from the metal grounds through first grooves, and second grooves are formed in each antenna unit, and the first feeding contact point is arranged in the non-center of the antenna unit;
the second substrate layer is provided with a metal ground, an insulating part for isolating the metal ground on the second substrate layer from each antenna unit on the first substrate layer, at least two second feed contact points corresponding to the first feed contact points, and at least two transmission lines, wherein the first end of each transmission line is connected with the corresponding second feed contact point, and each second feed contact point is connected with the corresponding first feed contact point on the first substrate layer;
the third substrate layer is provided with a metal ground and at least two contact points, each contact point is connected with the second end of the corresponding transmission line on the second substrate layer, and at least two contact points are used for connecting a radio frequency unit;
wherein the metal ground of the first substrate layer, the metal ground of the second substrate layer, and the metal ground of the third substrate layer are commonly grounded.
In a second aspect, there is provided an electronic device comprising: the middle shell component, the main circuit board, the bracket and the circuit board in the first aspect;
the main circuit board is arranged on the middle shell component;
the support is arranged on one side of the main circuit board, which is away from the middle shell assembly, and is used for fixing the main circuit board to the middle shell assembly;
the circuit board is arranged on one side of the bracket, which is away from the main circuit board;
wherein the middle case assembly, the main circuit board and the bracket are grounded in common.
The embodiment of the application discloses a circuit board, which comprises a first substrate layer, a second substrate layer and a third substrate layer; the antenna comprises a first substrate layer, a second substrate layer, a first antenna unit, a second antenna unit, a first feeding contact point, a second feeding contact point and a third feeding contact point, wherein the first substrate layer is provided with metal ground and at least two antenna units, metal ground is arranged between any two antenna units, the first feeding contact point is arranged on each antenna unit, each antenna unit is isolated from the metal ground through a first groove, and a second groove is formed in each antenna unit, wherein the first feeding contact point is arranged in the non-center of the antenna unit; the second substrate layer is provided with a metal ground, an insulating part for isolating the metal ground on the second substrate layer from each antenna unit on the first substrate layer, at least two second feed contact points corresponding to the first feed contact points, and at least two transmission lines, wherein the first end of each transmission line is connected with the corresponding second feed contact point, and each second feed contact point is connected with the corresponding first feed contact point on the first substrate layer; the third substrate layer is provided with a metal ground and at least two contact points, each contact point is connected with the second end of the corresponding transmission line on the second substrate layer, and the at least two contact points are used for connecting the radio frequency unit; wherein the metal ground of the first substrate layer, the metal ground of the second substrate layer, and the metal ground of the third substrate layer are common. According to the embodiment of the application, the first groove is used for isolating the antenna units from the metal ground, the path length of the current of the working frequency band of the antenna units is increased through the second groove, so that the area of each antenna unit is reduced, the space occupied by the antenna is reduced, meanwhile, the directional characteristic of the antenna is not greatly influenced, and the measurement precision of UWB can be ensured.
When the second groove is not communicated with the first groove, the second groove can be used as an impedance adjuster of the antenna by reasonably setting the position of the second groove, so that in-band standing waves of the antenna unit covering multiple UWB frequency bands are better optimized, the smoothness of the standing waves is improved, the efficiency of the antenna in the band and the flatness of the gain can be improved, the influence of the maximum gain on conduction is reduced, and the distance measurement distance of the UWB antenna is improved.
By arranging the impedance regulator on the antenna body, the performance of the antenna can be adjusted more conveniently and rapidly, and the problem that the frequency response characteristic of the centralized parameter device is poor at high frequency is solved, namely, the difference between the actual value and the nominal value along with the increase of the frequency is large, and the like, when the antenna is matched, the design and debugging difficulty of the antenna is increased, and the problem of poor consistency during mass production is solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
FIG. 1 is a schematic diagram of a first substrate layer of a circuit board provided by one embodiment of the present application;
FIG. 2 is a schematic diagram of a second substrate layer of a circuit board provided by one embodiment of the present application;
FIG. 3 is a schematic diagram of a third substrate layer of a circuit board provided by one embodiment of the present application;
fig. 4 is a schematic diagram of an antenna unit of a circuit board according to an embodiment of the present application;
fig. 5 is a schematic diagram of another antenna unit of the circuit board according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Wherein 10-electronics, 11-center housing assembly, 12-main circuit board, 13-bracket, 14-circuit board, 141-first substrate layer, 1411-first antenna element, 14111-first slot, 14112-second slot, 14113-first feed contact, 14114-third slot, 1412-second antenna element, 1413-third antenna element, 1414-metal ground, 142-second substrate layer, 1421-second feed contact, 1422-transmission line, 1423-metal ground, 143-third substrate layer, 1431-contact, 1432-metal ground.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the application may be practiced otherwise than as specifically illustrated or described herein. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.
The circuit board 14 and the electronic device 10 according to the embodiments of the present application will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1-5, a schematic structure of a circuit board 14 according to an embodiment of the present application is shown. The circuit board 14 may include: a first substrate layer 141, a second substrate layer 142, and a third substrate layer 143. The first, second and third substrate layers 141, 142 and 143 are sequentially stacked to form a circuit board.
Specifically, a metal ground 1414 and at least two antenna units are disposed on the first substrate layer 141, a metal ground 1414 is disposed between any two antenna units, a first feeding contact point 14113 is disposed on each antenna unit, each antenna unit is isolated from the metal ground 1414 by a first slot 14111, and a second slot 14112 is disposed on each antenna unit, wherein the first feeding contact point 14113 is disposed in the non-center of the antenna unit; the second substrate layer 142 is provided with a metal ground 1423, an insulating part for isolating the metal ground 1423 on the second substrate layer from each antenna unit on the first substrate layer 141, at least two second feeding contact points 1421 corresponding to the first feeding contact point 14113, and at least two transmission lines 1422, wherein a first end of each transmission line 1422 is connected with the corresponding second feeding contact point 1421, and each second feeding contact point 1421 is connected with the corresponding first feeding contact point 14113 on the first substrate layer 141; the third substrate layer 143 is provided with a metal ground 1432 and at least two contact points 1431, each contact point 1431 is connected with a second end of a corresponding transmission line 1422 on the second substrate layer 142, and the at least two contact points 1431 are used for connecting a radio frequency unit so as to facilitate the establishment of signal connection between the antenna unit and a UWB transceiver of the main circuit board; wherein the metal ground 1414 of the first substrate layer 141, the metal ground 1423 of the second substrate layer 142, and the metal ground 1432 of the third substrate layer 143 are grounded in common.
That is, the antenna unit and the metal ground may be isolated by the first slot, and the path length of the current in the working frequency band of the antenna unit may be increased by the second slot, so that the area of the antenna may be reduced, where, as shown in fig. 1, 4 and 5, the second slot may be in communication with the first slot, or the second slot may not be in communication with the first slot (not shown in the drawing), and the number of the second slots is not limited and may be determined according to practical situations. The second groove is formed in the surface of the antenna, the current path length of current of at least one wave band on the antenna is increased, the area of each antenna unit is reduced, the manufacturing cost and the space occupation of the antenna are reduced, the directivity characteristic of the antenna unit is not changed greatly, and the angle measurement accuracy of the UWB antenna can be guaranteed;
when the second groove is not communicated with the first groove, the position of the second groove is reasonably arranged to serve as an impedance regulator of the antenna, so that in-band standing waves covering the multi-UWB frequency band antenna unit can be better optimized, the smoothness of the standing waves is improved, the in-band efficiency and the gain flatness of the antenna can be improved, the influence of the maximum gain on conduction is reduced, and the distance measurement distance of the UWB antenna is improved.
By arranging the impedance regulator on the antenna body, the performance of the antenna can be adjusted more conveniently and rapidly, and the problem that the frequency response characteristic of the centralized parameter device is poor at high frequency is solved, namely, the difference between the actual value and the nominal value along with the increase of the frequency is large, and the like, when the antenna is matched, the design and debugging difficulty of the antenna is increased, and the problem of poor consistency during mass production is solved.
The first feeding contact 14113 can be disposed at any position, such as the upper left corner, the upper right corner, etc., of the non-center of the antenna unit, so that the antenna unit can work in various frequency bands. The metal ground 1414 is arranged between any two antenna units, so that the interval between any two antenna units can be further increased, and the mutual influence of the antenna units is avoided.
The circuit board 14 provided by the application can be a flexible circuit board. The first groove, the second groove and the insulating part can be filled with any material such as industrialized liquid crystal polymer (Liquid Crystal Polymer, LCP), modified Polyimide (MPI), polyimide (Polyimide, PI) and the like so as to achieve the insulating effect. Or, the antenna circuit or the metal ground is formed on each layer of substrate by copper plating or other processes, and the other parts are not plated with copper to be used as insulation areas.
In one manner, the second ends of each transmission line are disconnected from each other. The mutually independent second ends are connected with different feed signals.
In another mode, the second ends of each transmission line are connected with each other, a phase shifter is added on each transmission line, and differential adjustment such as phase adjustment is performed on the same feed signal through the phase shifter, so that the feed signals reaching the first ends of the transmission lines are different.
In an embodiment of the present application, the circuit board 14 may include a first substrate layer 141, a second substrate layer 142, and a third substrate layer 143; the first substrate layer 141 is provided with a metal ground 1414 and at least two antenna units, the metal ground 1414 is arranged between any two antenna units, each antenna unit is provided with a first feed contact point 14113, each antenna unit is isolated from the metal ground 1414 through a first slot 14111, each antenna unit is provided with a second slot 14112, and the first feed contact point 14113 is arranged in the non-center of the antenna unit; the second substrate layer 142 is provided with a metal ground 1423, an insulating part for isolating the metal ground 1423 on the second substrate layer 142 from each antenna unit on the first substrate layer 141, at least two second feeding contact points 1421 corresponding to the first feeding contact point 14113, and at least two transmission lines 1422, wherein a first end of each transmission line 1422 is connected with the corresponding second feeding contact point 1421, and each second feeding contact point 1421 is connected with the corresponding first feeding contact point 14113 on the first substrate layer 141; the third substrate layer 143 is provided with a metal ground 1432 and at least two contact points 1431, each contact point 1431 is connected to a second end of a corresponding transmission line 1422 on the second substrate layer 142, and the at least two contact points 1431 are used for connecting a radio frequency unit; wherein the metal ground 1414 of the first substrate layer 141, the metal ground 1423 of the second substrate layer 142, and the metal ground 1432 of the third substrate layer 143 are grounded in common. According to the embodiment of the application, the first groove 14111 is arranged to isolate the antenna units from the metal ground 1414, and the second groove 14112 is used for increasing the path length of the current of the working frequency band of the antenna units, so that the area of each antenna unit is reduced, the space occupied by the antenna is further reduced, meanwhile, the directional characteristic of the antenna is not greatly influenced, and the measurement precision of UWB can be ensured.
In one embodiment, the first slot 14111 may be a closed loop formed around the antenna element or a non-closed loop formed semi-around the antenna element. For example, when the adjacent area of one side of the antenna element is not provided with a metal ground, the first slot does not need to be provided, and the first slot forms a non-closed semi-ring shape.
In one possible embodiment of the application, the second slot 14112 communicates with the first slot 14111.
That is, the second slot 14112 is integrally provided with the first slot 14111, wherein the first slot 14111 is provided around the antenna unit, the second slot 14112 extends from the first slot into the inside of the antenna unit, and a gap is formed on at least one side of the antenna unit to increase a path length of a current of a certain frequency band.
The position and the direction of the second groove are not limited, and can be set according to practical situations.
In the case where the second slot 14112 communicates with the first slot 14111, further, in one possible embodiment of the present application, as shown in fig. 1, 4, 5, the circuit board may further include a third slot 14114. The third slot 14114 is an opening formed in the antenna unit, the second slot extends along a first direction, the third slot extends along a second direction, and an included angle is formed between the first direction and the second direction.
That is, the third slot is a slot that is not communicated with the first slot and the second slot, and the extending direction of the second slot 14112 is set to be a first direction, the first direction may be any direction, the second direction is a direction having a certain included angle with the first direction, for example, the included angle is an acute angle or a right angle, that is, the first direction and the second direction are different, so that the path length of the current can be increased in various working states of the antenna unit, the size in different directions is reduced, and the whole area of the antenna unit is further reduced.
Optionally, the first direction is a direction parallel to a current direction of the first operating frequency band of the antenna element.
The second slot is used for increasing the path length of the current of the second working frequency band of the antenna unit, and the third slot is used for increasing the path length of the current of the first working frequency band and/or the path length of the current of the second working frequency band, wherein the current flow direction of the second working frequency band is perpendicular to the current flow direction of the first working frequency band.
That is, the first direction is set as a current direction of the antenna unit in a certain operating frequency band, at this time, the second slot may be used to increase a path length of a current of the second operating frequency band of the antenna unit, the third slot is used to increase a path length of a current of the first operating frequency band and/or a path length of a current of the second operating frequency band, that is, when an included angle between an extending direction of the third slot and an extending direction of the second slot is an acute angle, the third slot may increase a path length of a current of the first operating frequency band and a path length of a current of the second operating frequency band, and if an included angle between an extending direction of the third slot and an extending direction of the second slot is a right angle, the third slot may increase a path length of a current of the first operating frequency band. The size of the antenna unit as a whole can be reduced.
Further, when the included angle between the extending direction of the third groove and the extending direction of the second groove is an acute angle, the third groove can also be used as an impedance adjuster, so that standing waves of the working frequency band become smooth, gain flatness of the antenna unit in the working frequency band is improved, influence of gain on conduction is reduced, and communication distance of the antenna unit is improved.
Specifically, the antenna unit may be a rectangular patch antenna, which may operate in various frequency bands, such as a signal (Channel) 5 (6.25 GHz-6.75 GHz) and a Channel9 (7.75 GHz-8.25 GHz), the current of the Channel5 of the antenna unit mainly flows along a first direction, the current direction of the Channel9 mainly flows along a second direction, the first direction is perpendicular to the second direction, at this time, the second slot 14112 may increase the current path length of the Channel9 to reduce the size of the antenna unit in the second direction, the included angle between the extending direction of the third slot and the extending direction of the second slot is an acute angle, and the third slot 14114 may increase the current path lengths of the Channel5 and the Channel9 to reduce the size of the antenna unit in the first direction and the second direction. Meanwhile, the second slot 14112 can also be used as an impedance adjuster of the Channel9, so that the standing wave of the Channel9 can be smoother, and the gain flatness of the antenna in the Channel9 is improved.
In one embodiment of the application, as shown in fig. 1 and 4, the third slot 14114 is a slot through the center of the antenna element, with the second direction being at an angle of 45 ° to the first direction.
Wherein the third slot may act as an impedance adjuster for either the first operating frequency band or the second operating frequency band.
That is, the third slot 14114 may be configured as a slot that passes through the center of the antenna element, and the direction of extension of the third slot 14114 may be at an angle, preferably 45, to the direction of current flow of the antenna element in another operating frequency band. The antenna unit area can be reduced, the antenna space occupation and the manufacturing cost are reduced, the directivity characteristic of the antenna unit is not changed basically, the measuring precision of the antenna is not affected, the antenna unit can be used as an impedance regulator, standing waves of a working frequency band are smoothed, the gain flatness of the antenna unit in the working frequency band is improved, the influence of the gain on conduction is reduced, and the communication distance of a UWB antenna system is improved.
In yet another embodiment of the present application, as illustrated in fig. 5, the third slot 14114 includes two sub-slots disposed to intersect.
That is, the third slot 14114 may include two sub-slots, which are disposed to intersect, and may increase the path length of current in different directions, and thus may reduce the size of the antenna unit.
Optionally, the second slot 14112 extends in a first direction, with the direction of extension of both sub-slots having an angle with the first direction.
In the embodiment of the present application, the extending direction of the second slot 14112 is set to be the first direction, the first direction may be any direction, an included angle is formed between the two sub-slots and the first direction, and the two sub-slots are arranged in an intersecting manner, that is, one sub-slot is one direction and the other sub-slot is the other direction, so that the path length of the current can be increased when the antenna unit works in different frequency bands, and the overall size of the antenna unit can be reduced. Further, because the two sub-slots are included angles with the first direction, the two sub-slots can be used as impedance regulators of two different working frequency bands, so that at least two standing waves can be regulated, the standing waves in the frequency bands are smoother, the gain flatness of the antenna unit in the corresponding working frequency band is improved, the influence of the gain on conduction is reduced, and the communication distance of the UWB antenna system is improved.
Optionally, the first direction is a direction parallel to a current direction of the first working frequency band of the antenna unit, an intersection point of the two sub-slots coincides with a center of the antenna unit, and the two sub-slots are perpendicular to each other and are both 45 ° with the first direction.
That is, the first direction is set as the current direction of the antenna unit in a certain working frequency band, at this time, the path length of the current of the frequency band in the first direction can be increased, that is, the size of the antenna unit in the first direction can be reduced, the included angle between the two sub-slots and the first direction is 45 degrees, and the two sub-slots are vertically arranged, so that the path length of the current of the frequency band in the first direction can be increased, the path length of the current of the antenna unit in another working frequency band can be increased, that is, the path length of the current of the antenna unit in various working frequency bands can be increased, and the overall size of the antenna unit can be further reduced. And the influence of gain on conduction can be reduced to the greatest extent, and the communication distance of the UWB antenna system is improved.
Alternatively, the two subslots are different in length.
That is, the lengths of the two sub-slots can be set to serve as impedance regulators of different frequency bands, so that the two sub-slots can better regulate the smoothness of standing waves of corresponding working frequency bands.
In one possible embodiment of the present application, the portion of the second substrate layer 142 facing the antenna element on the first substrate layer 141 is provided with a clearance area.
That is, a clearance area may be provided on the second substrate layer 142 to raise the height of the antenna.
Specifically, the projection of the antenna element is located within the headroom, and at least a portion of the headroom is located outside of the projection of the antenna element.
That is, the area of the clearance area may be larger than the projected area of the antenna unit, so as to further raise the height of the antenna.
In one possible embodiment of the present application, the at least two antenna elements include a first antenna element 1411, a second antenna element 1412, and a third antenna element 1413, the first antenna element and the second antenna element being distributed along a first direction, the second antenna element and the third antenna element being distributed along a second direction, and the first direction being perpendicular to the second direction.
Wherein, under the condition that the first antenna and the second antenna work simultaneously, the angle or the distance in the first plane can be measured; in the case where the second antenna and the third antenna are operated simultaneously, an angle or distance in the second plane may be measured; the first plane and the second plane are mutually perpendicular.
That is, the first antenna unit and the second antenna unit are distributed along the first direction, the second antenna unit and the third antenna unit are distributed along the second direction, and the first direction is perpendicular to the second direction, and the distribution of the three antenna units on the first substrate layer 141 is similar to an L-shaped structure.
In the embodiment of the application, the number of the antenna units can be three, and the three antenna units can be L-shaped, so that the angle or the distance in the first plane can be measured under the condition that the first antenna and the second antenna work simultaneously; in the case where the second antenna and the third antenna operate simultaneously, the angle or distance in the second plane may be measured, that is, the data in one plane may be measured by any two of them, and the positioning or ranging may be performed in three-dimensional space by three antenna units. In other embodiments of the application, the number of antennas may be other numbers.
In the embodiment of the present application, each of the second feeding contacts 1421 is connected to the corresponding first feeding contact 14113 on the first substrate layer 141 through a via; each contact 1431 is connected to a second end of a corresponding transmission line 1422 on the second substrate layer 142 through a via; the metal land 1414 of the first substrate layer 141, the metal land 1423 of the second substrate layer 142, and the metal land 1432 of the third substrate layer 143 are commonly grounded through via holes.
That is, the connections between the different layers are connected by vias. The via holes can be filled with electric connecting pieces, and metal walls can be arranged in the via holes to serve as the electric connecting pieces.
As shown in fig. 6, an embodiment of the present application further provides an electronic device 10, where the electronic device 10 may include: a middle case assembly 11, a main circuit board 12, a bracket 13 and a circuit board 14 provided in any of the above embodiments. Of course, the electronic device may further include a battery, a display screen, a front case, a rear case, and the like, and the present application will not be described in detail in view of brevity of text.
Specifically, the main circuit board 12 is provided to the middle case assembly 11; the bracket 13 is arranged on one side of the main circuit board 12 away from the middle shell assembly 11, and the bracket 13 is used for fixing the main circuit board 12 to the middle shell assembly 11; the circuit board 14 is arranged on one side of the bracket 13 away from the main circuit board 12; wherein the middle case assembly 11, the main circuit board 12 and the bracket 13 are grounded in common.
The middle shell component is used for connecting a front shell and a rear shell of the equipment and can serve as a mounting foundation of a main circuit board, the main circuit board can be mounted on the middle shell component, and the middle shell component can provide protection for the main circuit board.
In the embodiment of the present application, by adopting the circuit board 14 provided in the above embodiment, the antenna units are isolated from the metal ground by the first slot disposed around the antenna, and the path length of the current in the working frequency band of the antenna units is increased by the second slot, so that the area of each antenna unit is reduced, the space occupied by the antenna is reduced, the directional characteristic of the antenna is not greatly affected, and the measurement accuracy of UWB can be ensured.
Optionally, the projection of the circuit board 14 is located inside the bracket 13, and at least part of the bracket 13 is located outside the projection of the circuit board 14.
That is, the area of the bracket 13 may be set larger than the area of the circuit board 14 as an extension of the ground of the UWB antenna.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method according to the embodiments of the present application.
The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are to be protected by the present application.
Claims (10)
1. A circuit board, wherein the circuit board is a flexible circuit board, the circuit board comprising: the first substrate layer, the second substrate layer and the third substrate layer are sequentially stacked;
the antenna comprises a first substrate layer, a second substrate layer, at least two antenna units, a first feeding contact point, a second feeding contact point and a third feeding contact point, wherein the first substrate layer is provided with metal grounds and at least two antenna units, metal grounds are arranged between any two antenna units, the first feeding contact point is arranged on each antenna unit, the antenna units are isolated from the metal grounds through first grooves, and second grooves are formed in each antenna unit, and the first feeding contact point is arranged in the non-center of the antenna unit;
the second substrate layer is provided with a metal ground, an insulating part for isolating the metal ground on the second substrate layer from each antenna unit on the first substrate layer, at least two second feed contact points corresponding to the first feed contact points, and at least two transmission lines, wherein the first end of each transmission line is connected with the corresponding second feed contact point, and each second feed contact point is connected with the corresponding first feed contact point on the first substrate layer;
the third substrate layer is provided with a metal ground and at least two contact points, each contact point is connected with the second end of the corresponding transmission line on the second substrate layer, and at least two contact points are used for connecting a radio frequency unit;
the antenna unit is a UWB antenna unit, wherein the metal ground of the first substrate layer, the metal ground of the second substrate layer and the metal ground of the third substrate layer are commonly grounded;
the second groove is communicated with the first groove, the circuit board further comprises a third groove, the third groove is an opening formed in the antenna unit, the second groove extends along a first direction, the third groove extends along a second direction, an included angle is formed between the first direction and the second direction, and the third groove is not communicated with the first groove and the second groove.
2. The circuit board of claim 1, wherein the first direction is a direction parallel to a current direction of a first operating frequency band of the antenna element.
3. The circuit board of claim 2, wherein the third slot is a slot passing through a center of the antenna element, and the second direction is at an angle of 45 ° to the first direction.
4. The circuit board of claim 1, wherein the third slot comprises two sub-slots, the two sub-slots intersecting.
5. The circuit board of claim 4, wherein the second slot extends in a first direction, and wherein the direction of extension of both of the sub-slots is at an angle to the first direction.
6. The circuit board of claim 5, wherein the first direction is a direction parallel to a current direction of the first operating frequency band of the antenna unit, an intersection point of the two sub-slots coincides with a center of the antenna unit, and the two sub-slots are perpendicular to each other and each form an included angle of 45 ° with the first direction.
7. The circuit board of claim 4, wherein the two subslots are different in length.
8. The circuit board of claim 1, wherein a portion of the second substrate layer facing the antenna element on the first substrate layer is provided with a clearance area.
9. The circuit board of claim 1, wherein the at least two antenna elements comprise a first antenna element, a second antenna element, and a third antenna element, the first antenna element and the second antenna element being distributed along a first direction, the second antenna element and the third antenna element being distributed along a second direction, and the first direction being perpendicular to the second direction;
wherein, under the condition that the first antenna and the second antenna work simultaneously, the angle or the distance in the first plane can be measured; in the case where the second antenna is operating simultaneously with the third antenna, an angle or distance in the second plane may be measured; the first plane and the second plane are mutually perpendicular.
10. An electronic device, comprising: a middle case assembly, a main circuit board, a bracket and the circuit board of any one of claims 1-9;
the main circuit board is arranged on the middle shell component;
the support is arranged on one side of the main circuit board, which is away from the middle shell assembly, and is used for fixing the main circuit board to the middle shell assembly;
the circuit board is arranged on one side of the bracket, which is away from the main circuit board;
wherein the middle case assembly, the main circuit board and the bracket are grounded in common.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110387347.6A CN113178697B (en) | 2021-04-09 | 2021-04-09 | Circuit board and electronic equipment |
| PCT/CN2022/085361 WO2022213995A1 (en) | 2021-04-09 | 2022-04-06 | Circuit board and electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110387347.6A CN113178697B (en) | 2021-04-09 | 2021-04-09 | Circuit board and electronic equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113178697A CN113178697A (en) | 2021-07-27 |
| CN113178697B true CN113178697B (en) | 2023-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110387347.6A Active CN113178697B (en) | 2021-04-09 | 2021-04-09 | Circuit board and electronic equipment |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN113178697B (en) |
| WO (1) | WO2022213995A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113178697B (en) * | 2021-04-09 | 2023-11-10 | 维沃移动通信有限公司 | Circuit board and electronic equipment |
| CN114583446A (en) * | 2022-04-01 | 2022-06-03 | 维沃移动通信有限公司 | Ultra-bandwidth antenna array and electronic equipment |
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| CN204375968U (en) * | 2014-12-18 | 2015-06-03 | 哈尔滨飞羽科技有限公司 | A kind of ultra-wideband antenna based on T-slot |
| WO2018063497A1 (en) * | 2016-09-29 | 2018-04-05 | Intel IP Corporation | Patch antenna element and method for manufacturing a patch antenna element |
| CN108511426A (en) * | 2017-02-24 | 2018-09-07 | 台湾积体电路制造股份有限公司 | Encapsulation |
| WO2020107259A1 (en) * | 2018-11-28 | 2020-06-04 | 华为技术有限公司 | Dual-polarized micro-strip patch antenna, package antenna, and terminal device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3875592B2 (en) * | 2002-04-26 | 2007-01-31 | 日本電波工業株式会社 | Multi-element array type planar antenna |
| CN104037500B (en) * | 2013-03-04 | 2019-06-25 | 联想(北京)有限公司 | Antenna assembly and method for antenna assembly to be arranged |
| CN105305058B (en) * | 2015-11-30 | 2018-12-11 | 华南理工大学 | A kind of ultra wide band mimo antennas with three frequency range trap characteristics |
| WO2017171642A1 (en) * | 2016-03-29 | 2017-10-05 | Agency For Science, Technology And Research | Low profile wideband antenna |
| TWI672858B (en) * | 2018-04-30 | 2019-09-21 | Arcadyan Technology Corporation | High-isolation dual-band antenna |
| CN109728407A (en) * | 2019-01-15 | 2019-05-07 | 中国计量大学 | Ultra-wideband wearable antenna |
| US12015191B2 (en) * | 2019-02-08 | 2024-06-18 | Texas Instruments Incorporated | Antenna-on-package integrated circuit device |
| CN113178697B (en) * | 2021-04-09 | 2023-11-10 | 维沃移动通信有限公司 | Circuit board and electronic equipment |
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2021
- 2021-04-09 CN CN202110387347.6A patent/CN113178697B/en active Active
-
2022
- 2022-04-06 WO PCT/CN2022/085361 patent/WO2022213995A1/en unknown
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204375968U (en) * | 2014-12-18 | 2015-06-03 | 哈尔滨飞羽科技有限公司 | A kind of ultra-wideband antenna based on T-slot |
| WO2018063497A1 (en) * | 2016-09-29 | 2018-04-05 | Intel IP Corporation | Patch antenna element and method for manufacturing a patch antenna element |
| CN108511426A (en) * | 2017-02-24 | 2018-09-07 | 台湾积体电路制造股份有限公司 | Encapsulation |
| WO2020107259A1 (en) * | 2018-11-28 | 2020-06-04 | 华为技术有限公司 | Dual-polarized micro-strip patch antenna, package antenna, and terminal device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022213995A1 (en) | 2022-10-13 |
| CN113178697A (en) | 2021-07-27 |
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