CN108736132B - Antenna assembly and electronic device - Google Patents
Antenna assembly and electronic device Download PDFInfo
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- CN108736132B CN108736132B CN201810771527.2A CN201810771527A CN108736132B CN 108736132 B CN108736132 B CN 108736132B CN 201810771527 A CN201810771527 A CN 201810771527A CN 108736132 B CN108736132 B CN 108736132B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
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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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/44—Details of, or arrangements associated with, antennas using equipment having another main function to serve additionally as an antenna, e.g. means for giving an antenna an aesthetic aspect
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- 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
- H01Q21/00—Antenna arrays or systems
- H01Q21/30—Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
- H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
- H01Q5/335—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors at the feed, e.g. for impedance matching
Abstract
The application discloses antenna assembly, this antenna assembly includes: the printed circuit board is provided with two feed sources; the grounding surface is arranged on the printed circuit board, and four grounding points are arranged on the grounding surface; the metal frame is arranged around the periphery of the printed circuit board, a gap is arranged between the metal frame and the ground plane at an interval, the metal frame comprises four connecting points, and the four connecting points are respectively grounded through four grounding points; and a feeder line connected with the metal frame and the feed source is respectively arranged between the first connection point and the second connection point and between the third connection point and the fourth connection point so as to form a first slot antenna and a second slot antenna by utilizing the slots. Above structure, metal frame are complete closed loop, do not set up the crack, and then make the whole electronic device who uses this antenna module have better intensity, have the outward appearance feel of preferred simultaneously. The application also provides an electronic device comprising the antenna assembly.
Description
Technical Field
The present disclosure relates to the field of communications technologies, and in particular, to an antenna assembly and an electronic device.
Background
Antennas are arranged on electronic devices such as mobile phones and tablet computers for communication, and at present, a metal frame of a metal shell is generally provided with a broken seam so as to meet the performance requirement of the frequency band of the antenna. However, such a broken seam affects the appearance of the entire mobile phone and the appearance and feel of the entire electronic device, and the cost of the broken seam processing is high. On the other hand, the requirement of the broken seam on the width of the broken seam is high in the processing process, and if the width is too large, the appearance and the strength of the electronic device are influenced; conversely, too small width may cause mutual coupling between the two sides of the broken seam, and the smaller the width of the broken seam, the stronger the coupling, which may seriously affect the performance of the antenna.
Disclosure of Invention
Set up the crack to electronic device such as cell-phone and lead to electronic device structural strength poor and the not good technical problem of exogenesis feel on the metal frame, this application provides an antenna module and electronic device.
The technical scheme adopted by the application is as follows: an antenna assembly is provided, comprising:
the printed circuit board is provided with a first feed source and a second feed source;
the grounding surface is arranged on the printed circuit board, and a first grounding point, a second grounding point, a third grounding point and a fourth grounding point are arranged on the grounding surface;
the metal frame is arranged around the periphery of the printed circuit board, a gap is arranged between the metal frame and the ground plane at an interval, the metal frame comprises a first connecting point, a second connecting point, a third connecting point and a fourth connecting point, and the first connecting point, the second connecting point, the third connecting point and the fourth connecting point are grounded through a first grounding point, a second grounding point, a third grounding point and a fourth grounding point respectively; a first feed line connected with the metal frame and the first feed source is arranged between the first connection point and the second connection point, so that a first slot antenna is formed by the portion from the first connection point to the second connection point through the slot; and a second feeder line respectively connected with the metal frame and the second feed source is arranged between the third connecting point and the fourth connecting point, so that a second slot antenna is formed by utilizing the part from the third connecting point to the fourth connecting point of the slot.
The present application also provides an electronic device comprising the antenna assembly described above.
In the antenna module and the electronic device in this application, set up a gap between ground plane and the metal frame, be equipped with first feed and second feed on the printed circuit board, be equipped with first ground point, second ground point, third ground point and fourth ground point on the ground plane. The metal frame comprises a first connection point, a second connection point, a third connection point and a fourth connection point, and is grounded through the four grounding points respectively. The first connection point and the second connection point, and the third connection point and the fourth connection point are respectively connected with the first feed source and the second feed source through the first feed line and the second feed line, and then a first slot antenna is formed by utilizing a part from the first connection point to the second connection point through a slot; a second slot antenna is formed with a portion of the slot from the third connection point to the fourth connection point to generate a different frequency band. Above structure, metal frame are complete closed loop, do not set up the crack, and then make the whole electronic device who uses this antenna module have better intensity, have the outward appearance feel of preferred simultaneously.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an embodiment of an electronic device according to the present application;
FIG. 2 is a schematic structural diagram of an embodiment of an antenna assembly of the present application;
FIG. 3 is a schematic structural view of another embodiment of an antenna assembly of the present application;
FIG. 4 is a schematic structural view of yet another embodiment of an antenna assembly of the present application;
FIG. 5 is a schematic diagram of an antenna assembly according to another embodiment of the present application
FIG. 6 is a schematic structural diagram of an embodiment of an adjustment assembly of the present application;
FIG. 7 is a schematic structural view of yet another embodiment of an antenna assembly of the present application;
fig. 8 is a schematic partial structural view of yet another embodiment of an antenna assembly of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. It should be further noted that, for the convenience of description, only some of the structures related to the present application are shown in the drawings, not all of the structures. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms "first", "second" and "third" in this application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any indication of the number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of the feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless explicitly specifically limited otherwise. All directional indications (such as up, down, left, right, front, and rear … …) in the embodiments of the present application are only used to explain the relative positional relationship between the components, the movement, and the like in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indication is changed accordingly. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of an embodiment of an electronic device of the present application, and fig. 2 is a schematic structural diagram of an embodiment of an antenna assembly of the present application. The application provides an antenna assembly 100 and an electronic device 200 comprising the antenna. The particular electronic apparatus 200 may be any one of a number of electronic devices including, but not limited to, cellular phones, smart phones, other wireless communication devices, personal digital assistants, audio players, other media players, music recorders, video recorders, cameras, other media recorders, radios, medical devices, calculators, programmable remote controllers, pagers, netbook computers, Personal Digital Assistants (PDAs), Portable Multimedia Players (PMPs), moving picture experts group (MPEG-1 or MPEG-2) audio layer 3(MP3) players, portable medical devices, and digital cameras and combinations thereof. The electronic device 200 comprises the antenna assembly 100 as described in any of the embodiments below.
Specifically, in the present application, the antenna assembly 100 includes a printed circuit board 10, a ground plane 20 disposed on the printed circuit board 10, and a metal frame 40 surrounding the printed circuit board 10.
Specifically, in one embodiment, the printed circuit board 10 is a carrier for carrying circuits and components in the electronic device 200. The printed circuit board 10 is provided with a first feed source 12 and a second feed source 14, and the first feed source 12 and the second feed source 14 are used for connecting the metal frame 40 and used as input and output points of signals.
The ground plane 20 is a ground system of the electronic device 200 and is disposed on the printed circuit board 10. Specifically, the ground plane 20 is a metal layer disposed on the printed circuit board 10, and the ground plane 20 is disposed with a first ground point 22, a second ground point 24, a third ground point 26 and a fourth ground point 28, which are used to ground the metal frame 40.
The metal frame 40 surrounds the printed circuit board 10. Specifically, the metal frame 40 is a part of the frame of the electronic device 200, and forms a side portion of the electronic device 200. Specifically, the metal frame 40 is continuously disposed to form a closed frame around the printed circuit board 10. In the present application, a gap 50 is disposed between the metal frame 40 and the ground plane 20 at an interval, and the gap 50 serves as a radiation space of the antenna. It is understood that the gap 50 may be a real space, and the space may also be filled by the edge of the printed circuit board 10, as long as the metal frame 40 is spaced from the ground plane 20 to provide a space for the radiation of the antenna, which is not limited in particular. It is understood that if the gap is filled with a portion of the printed circuit board 10, the portion of the printed circuit board 10 filled in the gap is a clearance area, and specifically, the clearance area is an area where no component with metal is disposed, and other components without metal may be disposed on the area.
Specifically, the metal bezel 40 includes a first connection point 42, a second connection point 44, a third connection point 46, and a fourth connection point 48. The first connection point 42, the second connection point 44, the third connection point 46, and the fourth connection point 48 are grounded through the first ground point 22, the second ground point 24, the third ground point 26, and the fourth ground point 28, respectively. A first feed line 30 connected to the metal bezel 40 and the first feed 12 is provided between the first connection point 42 and the second connection point 44, respectively, and the first feed line 30 is provided across the slot 50 to form a first slot antenna using a portion of the slot 50 from the first connection point 42 to the second connection point 44. A second feed line 32 connected to the metal bezel 40 and the second feed 14 is provided between the third connection point 46 and the fourth connection point 48, and the second feed line 32 is provided across the slot 50 to form a second slot antenna using a portion of the slot 50 from the third connection point 46 to the fourth connection point 48. The first and second slot antennas transmit signals using the first and second feeding lines 30 and 32, respectively, using the slot 50 as a radiation space, a radio frequency electromagnetic field is excited on the slot 50, and electromagnetic waves are radiated to the space to transmit or receive the signals.
Referring to fig. 3, optionally, in one embodiment, the first connection point 42 and the third connection point 46 are the same connection point. Specifically, the first grounding point 22 and the third grounding point 26 are the same grounding point, but the first grounding point 22 and the third grounding point 26 may be different grounding points in other embodiments, which is not limited in particular.
Specifically, the length of the second slot antenna is greater than the length of the first slot antenna. It can be understood that the longer the length of the antenna, the lower the frequency band covered, and the shorter the length, the higher the frequency band covered. Specifically, in the embodiment, the first slot antenna is used for generating an operating frequency band between 1710-2690 Mhz, and the second slot antenna is used for generating an operating frequency band between 698-960 Mhz.
Specifically, in one embodiment, a radio frequency channel is disposed on the printed circuit board 10, and the first feed 12 and the second feed 14 are connected to a radio frequency signal through a combiner 34. To provide different signal frequency bands according to the operation of the electronic device 200.
Referring to fig. 4, optionally, in various embodiments, a matching circuit 36 is disposed on at least one of the first feed line 30 and the second feed line 32. The matching circuit 36 is located between the metal frame 40 and the first feed source 12 or the second feed source 14, and performs impedance matching and balanced matching to ensure that the working state of the antenna assembly 100 is more stable.
Specifically, in an embodiment, the metal frame 40 is a rectangular parallelepiped and includes a first side 41, a second side 43, a third side 45, and a fourth side 47 connected end to end in sequence, where the first side 41 and the third side 45 are set as long sides, and the second side 43 and the fourth side 47 are set as short sides.
Optionally, in one embodiment, the first connection point 42 and the second connection point 44 are located on a first side. The third and fourth connection points 46, 48 are located on the first and third sides 41, 45, respectively, opposite each other, as shown in fig. 1. In other embodiments, the first connection point 42 and the second connection point 44 may be located on different sides, and the third connection point 46 and the fourth connection point 48 may be located on the first side 41 and the second side 43 adjacent to each other, or on different sides, or on the same side, respectively, which is not limited in particular.
Referring to fig. 5 and 6, in an embodiment, the antenna assembly 100 further includes an adjusting assembly 90, and the adjusting assembly 90 includes a switch 60 and a tuning element 70, where the switch 60 is connected between the metal frame 40 and the first feed 12 or the second feed 14, and the tuning element 70 is selectively connected between the metal frame 40 and the first feed 12 or the second feed 14 through the switch 60, so that the length of the first slot antenna or the second slot antenna is changed to cover different frequency bands.
Referring to fig. 7, fig. 7 is a schematic structural view of another embodiment of an antenna assembly of the present application. In this embodiment, the metal frame 40 further includes a fifth connection point 49, the ground plane 20 is provided with a fifth ground point 29, the fifth connection point 49 is located between the first connection point 42 and the second connection point 44, and a switch 60a is disposed between the fifth connection point 49 and the fifth ground point 29. With this structure, the portion of the metal bezel 40 from the second connection point 44 to the fifth connection point 49 forms the third slot antenna. With this structure, the length from the fifth connection point 49 to the second connection point 44 in the metal bezel 40 is greater than the length from the fifth connection point 49 to the first connection point 42. The length of the third slot antenna is smaller than that of the first slot antenna, and the frequency band generated by the third slot antenna is higher than that generated by the first slot antenna. It is understood that only one of the first slot antenna and the third slot antenna operates. Specifically, when the switch 60a connected to the fifth connection point 49 is turned on, the third slot antenna operates, and the first slot antenna does not operate. On the other hand, when the switch 60a connected to the fifth connection point 49 is in a non-conductive state, the third slot antenna does not operate, and the first slot antenna operates.
Optionally, in an embodiment, a tuning element 70 may be disposed between the fifth connection point 49 and the fifth ground point 29, and the tuning element 70 is selectively connected between the metal frame 40 and the fifth ground point 29 through a switch 60a to cover different frequency bands.
Optionally, the tuning element 70 is at least one of a capacitor 72 or an inductor 74. The specific capacitor 72 may be a fixed capacitor or a variable capacitor. In an embodiment where both the capacitor 72 and the inductor 74 are provided, the capacitor 72 and the inductor 74 are provided in parallel, as shown in fig. 5.
The above arrangement of the fifth connection point 49, the switch 60 or 60a between the metal frame 40 and the first feed 12 or the second feed 14, and the tuning element 70 all provide the antenna assembly 100 with a greater variety of lengths that can be switched to cover a wider low frequency range.
Referring to fig. 8, fig. 8 is a schematic partial structural view of another embodiment of an antenna assembly of the present application. In this embodiment, the antenna assembly 100 further includes a bottom plate 80 connected to the metal bezel 40, and the metal bezel 40 and the bottom plate 80 form a receiving cavity 82 for receiving the printed circuit board 10. Optionally, in an embodiment, the bottom plate 80 is made of an insulating material, and may be made of a glass material or a plastic material, which is not particularly limited.
In other embodiments, the bottom plate 80 may be made of metal, so long as at least the gap 50 is hollowed out from the second connection point 24 to the fourth connection point 28, and then the hollowed-out position is filled with an insulating material, such as plastic, resin, etc., to avoid shielding the signal.
This application sets up the gap between metal frame 40 and the ground plane 20, sets up two feeds on printed circuit board 10, sets up a plurality of tie points on metal frame 40, and every tie point is with ground plane 20 ground connection, and two feeds are located respectively between two tie points to be connected and then form a plurality of slot antennas respectively through a feeder and metal frame 40 respectively. The length of each slot antenna is different, and the slot antennas are used for covering a low frequency band and a medium-high frequency band. In addition, the tuning element 70, the switch 60 or 60a and the like are arranged on the circuit, so that the antenna assembly 100 can cover a wider range of frequency bands. With the above structure, the metal frame 40 is a complete closed loop without any break, so that the electronic device 200 using the antenna assembly 100 has better strength and better appearance. Meanwhile, compared with a structure that a broken seam is arranged on a metal frame in the prior art, the structure design is low in processing cost, and the problem that parts on two sides of the broken seam are mutually coupled due to the fact that the broken seam is too small in accommodating does not exist, so that the performance of the antenna is better.
The above description is only for the purpose of illustrating embodiments of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application or are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.
Claims (2)
1. An antenna assembly, comprising:
the radio frequency antenna comprises a printed circuit board, a first feed source and a second feed source are arranged on the printed circuit board, a radio frequency channel is arranged on the printed circuit board, and the first feed source and the second feed source are connected into the radio frequency channel through a combiner;
the grounding surface is arranged on the printed circuit board, and a first grounding point, a second grounding point, a third grounding point, a fourth grounding point and a fifth grounding point are arranged on the grounding surface;
the metal frame is continuously arranged to surround the periphery of the printed circuit board to form a closed frame body, a gap is arranged between the metal frame and the ground plane at an interval, the metal frame is in a cuboid shape and comprises a first side edge, a second side edge, a third side edge and a fourth side edge which are sequentially connected end to end, the metal frame comprises a first connecting point, a second connecting point, a third connecting point, a fourth connecting point and a fifth connecting point, the first connecting point and the second connecting point are positioned on the first side edge, the third connecting point is positioned on the first side edge, the fourth connecting point is positioned on the second side edge or the third side edge, and the first connecting point, the second connecting point, the third connecting point, the fourth connecting point and the fifth connecting point respectively pass through the first grounding point, the second grounding point, the third grounding point, the grounding point, The fourth ground point and the fifth ground point are grounded; a first feed line connected with the metal frame and the first feed source is arranged between the first connection point and the second connection point, so that a first slot antenna is formed by the portion from the first connection point to the second connection point through the slot; a second feed line connected to the metal frame and the second feed source is disposed between the third connection point and the fourth connection point, so that a second slot antenna is formed by using a portion of the slot from the third connection point to the fourth connection point, a fifth connection point is disposed between the first connection point and the second connection point, the first connection point and the third connection point are the same connection point, a matching circuit is disposed on at least one of the first feed line and the second feed line, a tuning element is disposed on at least one of the first feed line and the second feed line, the metal frame includes a long side and a short side, the first slot antenna is a portion of the long side and is close to the short side, and the third connection point and the fourth connection point of the second slot antenna are both disposed on the two long sides, and includes the entire short side; the first slot antenna is used for generating an operating frequency band between 1710-2690 Mhz, the second slot antenna is used for generating an operating frequency band between 698-960Mhz, and the length of the second slot antenna is greater than that of the first slot antenna;
the bottom plate is connected with the metal frame and forms an accommodating cavity for accommodating the printed circuit board with the metal frame, and the bottom plate is made of insulating materials; and
a switch connected between the fifth connection point and the fifth ground point to form a third slot antenna from the second connection point to the fifth connection point using the slot; the tuning element is arranged on at least one of the first feed line and the second feed line together with the tuning element, the tuning element is selectively connected between the metal frame and the first feed source or the second feed source through the switch to cover different frequency bands, and the tuning element is at least one of capacitance or inductance.
2. An electronic device comprising the antenna assembly of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810771527.2A CN108736132B (en) | 2018-07-13 | 2018-07-13 | Antenna assembly and electronic device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810771527.2A CN108736132B (en) | 2018-07-13 | 2018-07-13 | Antenna assembly and electronic device |
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| CN108736132A CN108736132A (en) | 2018-11-02 |
| CN108736132B true CN108736132B (en) | 2021-03-05 |
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| CN201810771527.2A Active CN108736132B (en) | 2018-07-13 | 2018-07-13 | Antenna assembly and electronic device |
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| CN109586031B (en) * | 2018-12-28 | 2021-04-27 | 维沃移动通信有限公司 | Wireless electronic communication equipment |
| CN112751188B (en) * | 2020-12-31 | 2024-01-12 | Oppo广东移动通信有限公司 | Electronic equipment capable of improving antenna performance |
| CN112952353A (en) * | 2021-01-29 | 2021-06-11 | 捷开通讯(深圳)有限公司 | Antenna structure and smart machine |
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| CN105098323A (en) * | 2015-07-10 | 2015-11-25 | 深圳市万普拉斯科技有限公司 | Antenna structure of mobile terminal and mobile terminal |
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| CN104466392A (en) * | 2013-09-18 | 2015-03-25 | 联想(北京)有限公司 | Antenna device, electronic equipment and method for setting antenna device |
| CN204303980U (en) * | 2014-12-25 | 2015-04-29 | 斯凯科斯电子(深圳)有限公司上海分公司 | Seamless metal loop antenna structure |
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