CN109301479B - Intelligent wearable device with antenna structure - Google Patents
Intelligent wearable device with antenna structure Download PDFInfo
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- CN109301479B CN109301479B CN201811286952.9A CN201811286952A CN109301479B CN 109301479 B CN109301479 B CN 109301479B CN 201811286952 A CN201811286952 A CN 201811286952A CN 109301479 B CN109301479 B CN 109301479B
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- wearable device
- insulating bottom
- module
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- 239000000919 ceramic Substances 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
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- 229910000838 Al alloy Inorganic materials 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
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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
- H01Q1/44—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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- G—PHYSICS
- G04—HOROLOGY
- G04R—RADIO-CONTROLLED TIME-PIECES
- G04R60/00—Constructional details
- G04R60/06—Antennas attached to or integrated in clock or watch bodies
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/273—Adaptation for carrying or wearing by persons or animals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Support Of Aerials (AREA)
Abstract
The invention discloses intelligent wearable equipment with an antenna structure, which comprises an equipment shell and a conductive part, wherein a circuit main board and the antenna structure are arranged in the equipment shell, the equipment shell comprises a metal middle frame and an insulating bottom cover connected to the bottom of the metal middle frame, and at least one fracture is arranged on the metal middle frame to divide the metal middle frame into a first part and a second part. The antenna structure comprises an antenna feed module connected with the first part and the circuit main board and a plurality of antenna feed points arranged on the first part, and the first part is used as a radiator of the antenna. The conductive component is arranged on the insulating bottom cover, is connected to one antenna feed point and is connected to the second part. According to the intelligent wearing equipment provided by the embodiment of the invention, the conductive part is additionally arranged, so that the ground plane required by the antenna can be increased by utilizing the conductive part, the problem of signal attenuation of the ground frequency band of the antenna when the intelligent wearing equipment is worn on an arm is solved, and the purpose of improving the signal of the antenna in the low frequency band is further achieved.
Description
Technical Field
The invention relates to the technical field of intelligent wearable equipment, in particular to intelligent wearable equipment with an antenna structure.
Background
With the development of E-SIM technology, for small smart wearable devices (e.g. smart watches, smart bracelets), communication functions become essential, and thus the performance requirements for antennas are high. Taking intelligent wearing equipment as an example of an intelligent watch, along with development of technology, the miniaturized design requirement of users on the intelligent watch is also higher and higher. And when satisfying its miniaturized design, because the volume of intelligent wrist-watch is less, consequently, place the inside circuit board's of intelligent wrist-watch area also reduces to lead to the required length of ground plane of antenna not enough, seriously influence the performance of antenna at the low frequency channel (frequency is below 900 Mhz).
Further, the state of use of the smart watch is typically a state of wearing on the arm of the user. Because the human body is a conductor, the loss of the arm to the antenna signal is very large, and the antenna performance when the user wears is seriously affected.
Disclosure of Invention
The embodiment of the invention discloses intelligent wearing equipment with an antenna structure, which can effectively solve the problems of small volume and signal attenuation when the intelligent wearing equipment is in a wearing and using state and effectively improve the performance of an antenna.
To achieve the above objective, an embodiment of the present invention discloses an intelligent wearable device with an antenna structure, including
The device comprises a device shell, wherein a circuit main board and an antenna structure are arranged in the device shell, the device shell comprises a metal middle frame and an insulating bottom cover connected to the bottom of the metal middle frame, at least one fracture is arranged on the metal middle frame, the metal middle frame is divided into at least two parts, namely a first part and a second part, by the at least one fracture;
the antenna structure comprises an antenna feed module and a plurality of antenna feed points, wherein one end of the antenna feed module is connected with the first part so that the first part is used as a radiator of an antenna, the other end of the antenna feed module is connected with the circuit main board, and the plurality of antenna feed points are arranged on the first part; and
and the conductive component is arranged on the insulating bottom cover, is connected to one of the antenna feed points and is connected to the second part.
In an optional implementation manner, in an embodiment of the present invention, an antenna tuning module is further disposed in the device housing, a radio frequency module connected to the antenna tuning module is disposed on the circuit board, and the other end of the antenna feeding module is connected to the antenna tuning module, so as to achieve connection between the antenna feeding module and the circuit board.
As an alternative implementation manner, in an embodiment of the present invention, the antenna feed point includes a first feed point and a second feed point that are disposed at intervals, and the antenna feed module is located between the first feed point and the second feed point;
the device is characterized in that a first antenna tuning circuit and a second antenna tuning circuit are further arranged in the device shell, the first feed point is connected with the first antenna tuning circuit, and the second feed point is connected with the second antenna tuning circuit.
As an alternative embodiment, in an embodiment of the present invention, the second portion is provided with a plurality of grounding points arranged at intervals, and the conductive member is connected to any one of the grounding points or any several of the grounding points on the second portion.
As an alternative implementation manner, in an embodiment of the present invention, a first functional module and a second functional module are further provided in the device housing, where the first functional module is disposed near the first portion, and the second functional module is disposed near the second portion.
As an alternative implementation manner, in an embodiment of the present invention, the grounding points include a first grounding point and a second grounding point that are disposed at intervals;
the first grounding point is provided with the break joint with the first feeding point, the second grounding point is arranged close to the second feeding point, and/or the break joint is arranged between the second grounding point and the second feeding point, and the first grounding point is arranged close to the first feeding point.
As an alternative implementation manner, in an embodiment of the present invention, a projection of the first functional module on the insulating bottom cover is located between the first feeding point and the second feeding point, and a projection of the second functional module on the insulating bottom cover is located between the first feeding point and the first grounding point.
As an alternative implementation manner, in an embodiment of the present invention, the conductive member is molded in the insulating bottom cover, or the conductive member is disposed on an outer surface of the insulating bottom cover, which is used for contacting with an arm wearing surface of a human body.
As an alternative embodiment, in an embodiment of the present invention, the conductive member includes a ground plane parallel to the outer surface of the insulating bottom cover.
As an alternative embodiment, in an embodiment of the present invention, a projected area of the conductive member on the outer surface of the insulating bottom cover is greater than, equal to, one tenth of an area of the outer surface of the insulating bottom cover.
As an alternative embodiment, in an embodiment of the present invention, a distance from an outer edge of the conductive member to an outer edge of the insulating bottom cover opposite thereto is greater than or equal to 2mm.
As an alternative embodiment, in an embodiment of the present invention, the conductive member is a thin plate-like structure or an annular thin plate-like structure.
In an optional embodiment of the present invention, the break seam is filled with an insulating material, the conductive member is made of metal, and the insulating bottom cover is made of any one of plastic, silica gel, ceramic or glass.
Compared with the prior art, the embodiment of the invention has the following beneficial effects:
(1) The miniaturized design requirement of intelligent wearing equipment is satisfied. According to the intelligent wearing equipment with the antenna structure, the metal middle frame and the insulating bottom cover connected to the bottom of the metal middle frame are arranged, the broken seam is arranged on the metal middle frame, and then the antenna feed module is connected with the first part of the metal middle frame, so that the metal middle frame can serve as a radiator of the antenna, the intelligent wearing equipment can meet the texture requirement of a user on the appearance of the metal shell, and meanwhile, as one part of the metal shell can serve as the radiator of the antenna, a ceramic patch antenna with large size and large weight is not needed, and the miniaturized design requirement of the intelligent wearing equipment is met.
(2) The antenna has good performance. According to the intelligent wearing equipment with the antenna structure, the conductive part is additionally arranged, the conductive part is arranged on the insulating bottom cover, and then the conductive part is connected to the antenna feed point and the second part of the metal middle frame, so that the second part of the metal middle frame is not used as a radiator of the antenna, the ground plane required by the antenna can be increased by utilizing the conductive part, the problem of signal attenuation of the ground frequency band of the antenna when the intelligent wearing equipment is worn on an arm is solved, and the purpose of improving the signal of the antenna in a low frequency band is achieved.
(3) The intelligent wearable device is smaller in size. According to the intelligent wearing equipment with the antenna structure, the insulating bottom cover is limited to be made of insulating materials, and meanwhile, the conductive part is subjected to in-film injection molding or is adhered to the bottom surface of the insulating bottom cover parallel to the arm wearing surface of a user, so that the conductive part can be used as a grounding extension surface of the antenna, meanwhile, the conductive part does not occupy the space inside the equipment shell, the occupation of the inner space of the intelligent wearing equipment is reduced, the size of the intelligent wearing equipment is smaller, and the structure is more compact. In addition, the conductive part is of a thin plate-shaped structure or an annular thin plate-shaped structure, and the thickness of the conductive part is small, so that the conductive part can not influence the comfort of wearing of a user even if the conductive part is arranged on the bottom surface of the insulating bottom cover, and the design is more humanized.
(4) The position design of the antenna is reasonable. According to the intelligent wearable device with the antenna structure, the antenna feed module is arranged at the position close to the first part of the metal middle frame, and the antenna feed point is arranged on the first part of the metal middle frame, so that connection of the antenna feed module and a circuit main board is facilitated, connection of the conductive part and the antenna feed point as well as connection of the conductive part and the second part are facilitated, and connection of the antenna structure is simpler.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is an overall structure diagram of an intelligent wearable device disclosed in an embodiment of the present invention;
fig. 2 is an internal structural diagram of the smart wearable device disclosed in the embodiment of the present invention;
fig. 3 is an internal structural diagram (circuit board not shown) of the smart wearable device disclosed in the embodiment of the present invention;
fig. 4 is a schematic structural diagram of the smart wearable device provided with the conductive component according to the embodiment of the present invention;
fig. 5 is a schematic diagram of another structure of the smart wearable device provided with the conductive component according to the embodiment of the present invention;
fig. 6 is a schematic structural diagram of another smart wearable device provided with the conductive component according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of a smart wearable device as disclosed in an embodiment of the present invention worn on an arm model;
fig. 8 is a passive radiation performance comparison diagram of a conventional smart wearable device disclosed in an embodiment of the present invention and the smart wearable device of the present invention worn on an arm model.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the present invention, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are only used to better describe the present invention and its embodiments and are not intended to limit the scope of the indicated devices, elements or components to the particular orientations or to configure and operate in the particular orientations.
Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the present invention will be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, the terms "mounted," "configured," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. 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.
Furthermore, the terms "first," "second," and the like, are used primarily to distinguish between different devices, elements, or components (the particular species and configurations may be the same or different), and are not used to indicate or imply the relative importance and number of devices, elements, or components indicated. Unless otherwise indicated, the meaning of "a plurality" is two or more.
The embodiment of the invention discloses intelligent wearing equipment with an antenna structure, which can effectively solve the problems of small volume and signal attenuation when the intelligent wearing equipment is in a wearing and using state and effectively improve the performance of an antenna.
The intelligent wearable device provided by the embodiment of the invention is described in detail below with reference to the accompanying drawings.
Fig. 1 to 3 are schematic structural diagrams of an intelligent wearable device according to an embodiment of the invention. The intelligent wearable device provided by the embodiment of the invention comprises a device shell 10, a conductive part 20 and a watchband 30, wherein a circuit main board 11 and an antenna structure are arranged in the device shell 10, the device shell 10 comprises a metal middle frame and an insulating bottom cover 10b connected to the bottom of the metal middle frame, at least one fracture 101 is arranged on the metal middle frame, and the metal middle frame is divided into at least two parts, namely a first part 102 and a second part 103. The antenna structure includes an antenna feed module 12a and a plurality of antenna feed points, wherein one end of the antenna feed module 12a is connected to the first portion 102, so that the first portion 102 can be used as a radiator of the antenna. The other end of the antenna feed module 12a is connected to the circuit board 11, and the plurality of antenna feed points are disposed in the first portion 102. The conductive member 20 is disposed on the insulating bottom cover 10b, the conductive member 20 is connected to one of the antenna feed points, and the conductive member 20 is connected to the second portion 103. The wristband 30 is attached to both ends of the device case 10.
It should be appreciated that since the device case 10 includes the metal center and the insulating bottom cover 10b, the inside of the metal center is substantially formed with a space for accommodating the circuit board 11 and the antenna structure, that is, the circuit board 11 and the antenna structure are actually disposed inside the metal center.
In this embodiment, the intelligent wearing device is an intelligent watch, and because the whole volume of the intelligent watch is small and the use state is in a wearing state, the scheme of the invention can meet the miniaturization design of the intelligent watch, and simultaneously solve the influence of the arm on the antenna signal of the intelligent watch when the intelligent watch is worn on the arm, thereby effectively ensuring the antenna performance of the intelligent watch.
In addition, since the smart wearable device is a smart watch, a battery 110 connected with the circuit board 11 and used for supplying power to the circuit board 11 is further provided in the device housing, and the battery 110 is provided above the circuit board 11.
In this embodiment, the metal middle frame may be made of metal materials such as aluminum alloy, magnesium alloy or stainless steel, which not only has good conductivity, but also has light weight and strong metal texture, and can meet the requirements of users on the appearance texture of the intelligent wearable device. Specifically, the metal middle frame is preferably made of aluminum alloy, and is a square frame body with upper and lower openings, wherein the upper opening is mainly covered by the display screen 100, and the lower opening is covered by an insulating bottom cover 10b connected with the upper opening. In order to prevent signals affecting the antenna and to allow the conductive member 20 provided on the insulating bottom cover 10b to become a ground extension surface of the antenna, the insulating bottom cover 10b is made of an insulating material such as any one of glass, plastic, silica gel, or ceramic. Preferably, the insulating bottom cover 10b of the present invention is made of plastic material, so that the smart watch has a light effect, and at the same time, the insulating bottom cover also has a heat insulation effect, so as to prevent the electronic components inside the equipment housing 10 from heating and scalding the user when the user wears the smart watch.
Further, the number of the breaks on the metal middle frame can be designed according to the actual antenna design requirement, as long as at least one break can be satisfied, the metal middle frame can be divided into the first portion 102 and the second portion 103, so that the first portion 102 can be used as the radiator of the antenna, and the second portion 103 can not be used as the radiator of the antenna. Preferably, the number of the breaks 101 on the metal middle frame of the present invention may be three, and the three breaks 101 divide the metal middle frame into the first portion 102, the second portion 103 and the third portion 104. As shown in fig. 2 to 4, the break lines 101 are a first break line 101a, a second break line 101b, and a third break line 101c, the metal middle frame between the first break line 101a and the second break line 101b is a first portion 102, the metal middle frame between the second break line 101b and the third break line 101c is a second portion 103, and the metal middle frame between the third break line 101c and the first break line 101a is a third portion 104. Because the antenna feed module 12a is disposed near the first portion 102 and the antenna feed point is disposed at the first portion 102, the area of the first portion 102 occupied by the metal middle frame is larger than the area of the second portion 103 occupied by the metal middle frame, and the areas of the second portion 103 and the third portion 104 occupied by the metal middle frame are approximately equal. Further, as in the paper orientation of fig. 3, the first portion 102 is a portion including one side and one end of the metal center, while the second portion 103 is another side including the metal center, and the third portion 104 is another end of the metal center. It will be appreciated that in other embodiments, more breaks may of course be provided in the metal center, for example, four, five or more breaks may be provided.
Furthermore, in order to ensure the overall appearance decoration effect of the device housing 10, the break 101 should be filled with an insulating material, so that the break 101 can be filled with the insulating material, and communication among the first portion 102, the second portion 103 and the third portion 104 can be avoided.
In this embodiment, in order to connect the antenna feeding module 12a with the circuit board 11, an antenna tuning module 13 is further disposed in the device housing 10, and a radio frequency module 11a connected to the antenna tuning module 13 is disposed on the circuit board 11, and the other end of the antenna feeding module 12a is connected to the antenna tuning module 13, so as to connect the antenna feeding module 12a with the circuit board 11, so that a radio frequency signal of the radio frequency module 11a can be transmitted to the first portion 102 through the antenna feeding module 12 a. Specifically, the antenna tuning module 13 is disposed close to the antenna feed module 12a, and the antenna tuning module 13 is disposed between the circuit board 11 and the antenna feed module 12a, so that the antenna tuning module 13 is connected to the radio frequency module 11a, and further, is connected to the circuit board 11.
In this embodiment, the number of antenna feed points are provided at the first portion 102. Specifically, the two antenna feed points may be a first feed point 12b and a second feed point 12c that are disposed at intervals, respectively, the first feed point 12b is disposed near the first break 101a, the second feed point 12c is disposed near the second break 101b, and the antenna feed module 12a is disposed between the first feed point 12b and the second feed point 12c and is disposed closer to the first feed point 12 b. This arrangement is mainly intended to facilitate connection of the subsequent conductive member 20 to the antenna feed point, so that the connection of the antenna inside the device housing 10 is more reasonable.
Further, a first antenna tuning circuit 141 and a second antenna tuning circuit 142 are also provided in the device housing 10, the first feed point 12b being connected to the first antenna tuning circuit 141 and the second feed point 12c being connected to the second antenna tuning circuit 142 to control the coupling of the first portion 102 as an antenna radiator. Signals in the middle and high frequency bands (about 1710 to 2690 Mhz) can be transmitted and received by coupling the first antenna tuning circuit 141 to the first section 102, and signals in the low frequency band (about 700 to 960 Mhz) can be transmitted and received by coupling the second antenna tuning circuit 142 to the first section 102. Thus, by using the first portion 102 as the radiator of the antenna, not only the signal receiving and transmitting of the antenna in the middle-high frequency band can be realized, but also the signal receiving and transmitting of the antenna in the low frequency band can be satisfied, and the signal performance of the antenna in the low frequency band can be effectively improved.
As shown in fig. 2 to 3, in this embodiment, a plurality of grounding points may be disposed on the second portion 103 at intervals, and the conductive member 20 is connected to any one of the grounding points or any several of the grounding points on the second portion 103. Specifically, the number of the grounding points may be two, and the first grounding point 103a and the second grounding point 103b are respectively arranged at intervals. The break is formed between the first grounding point 103a and the first feeding point 12b, and the second grounding point 103b is disposed near the second feeding point 12 c; or the break is provided between the second ground point 103b and the second feed point 12c, the first ground point 103a being disposed close to the second feed point 12 c.
Preferably, since the break of the present invention is three, the break between the first ground point 103a and the first feed point 12b is a first break 101a and a third break 101c, and the break is a second break 101b also provided between the second ground point 103b and the second feed point 12c, and both the second ground point 103b and the second feed point 12c are disposed relatively close to the second break 101b, and therefore the second ground point 103b is disposed close to the second feed point 12 c.
It should be appreciated that the positions of the first and second ground points 103a, 103b may be interchanged, as may the positions of the first and second feed points 12b, 12 c.
In this embodiment, the device housing 10 further includes a first functional module 151 and a second functional module 152, where the first functional module 151 is disposed near the first portion 102 and the second functional module 152 is disposed near the second portion 103. Specifically, the first functional module 151 may be a camera module, and the second functional module 152 may be a speaker and a speaker.
Further, in order to reasonably arrange the position of the camera module within the apparatus housing 10 without affecting the framing, imaging, of the camera module, the camera module is preferably disposed near one end of the apparatus housing 10, i.e., the projection of the camera module on the insulating bottom cover 10b may be located substantially between the first feed point 12b and the second feed point 12c, and disposed near the second feed point 12 c.
Similarly, if the second functional module 152 is a speaker, in order to facilitate placement of the speaker's sound outlet, the speaker's projection onto the insulating bottom cover 10b may be located between the first ground point 103a and the second ground point 103b, i.e., the speaker is disposed proximate to the second portion 103.
Still further, a third functional module 153 is further disposed in the device housing 10, and the third functional module 153 may be a microphone, and in order to facilitate the placement of the pick-up hole of the microphone so that the user can aim at the pick-up hole to emit a sound signal, the projection of the microphone on the insulating bottom cover 10b may be located between the first feed point 12b and the first feed point 12b, and then the third functional module 153 is disposed near the third portion 104.
The arrangement of different positions of the different functional modules close to the metal middle frame can be beneficial to reasonably arranging the positions of the different functional modules inside the equipment shell 10, so that the space utilization of the equipment shell 10 is more reasonable and effective.
As shown in fig. 4 to 7, in the present embodiment, the conductive member 20 may be connected to and conducted with the first feeding point 12b through the first connecting member 21, and the conductive member 20 may also be connected to and conducted with the first grounding point 103a and the second grounding point 103b through the second connecting member 22 and the third connecting member 23, respectively, so as to achieve connection between the conductive member 20 and the second portion 103. It should be noted that, when the conductive member 20 is not connected to the second feed point 12c and the conductive member 20 is connected to the first feed point 12b, the first antenna tuning circuit 141 connected to the first feed point 12b should be directly connected to the ground plane of the circuit board 11, so that the conductive member 20 can be used as a ground extension member of the antenna. And the conductive member 20 may optionally be conducted to one of the first and second ground points 103a and 103b when connected to the first and second ground points 103a and 103b through the second and third connection members 22 and 23, respectively. That is, in fact, the conductive member 20 may be connected to the first ground point 103a through the second connection member 22, or may be connected to the second ground point 103b through the third connection member 23, and of course, may also be connected to both the first ground point 103a and the second ground point 103b, so that the second portion 103 may not be used as a radiator of the antenna, and further, the second portion 103 may not participate in radiation of the antenna structure, that is, the second portion 103 may be used as a ground of the antenna, and further, the ground feeding area of the antenna may be increased. Preferably, the first connecting piece 21, the second connecting piece 22 and the third connecting piece 23 can be elastic pieces, conductive foam, etc.
Further, the conductive member 20 may be a metal sheet, for example, a copper sheet, an aluminum alloy sheet, or a magnesium aluminum alloy sheet. The conductive member 20 may be injection-molded into the insulating bottom cover 10b by in-film injection molding, or may be disposed on an outer surface of the insulating bottom cover 10b for contacting the arm wearing surface of the human body. If in-film injection molding is used, the insulating bottom cover 10b may be plastic, and a metal sheet is injection molded in the inner film of the insulating bottom cover 10b during injection molding, so that the metal sheet may form the conductive member 20. If the conductive member 20 is disposed on the outer surface of the insulating bottom cover 10b for contacting the arm wearing surface of the human body, the conductive member 20 may be adhered to the outer surface of the insulating bottom cover 10b by means of adhesion. In either of the above-described modes, it should be noted that the conductive member 20 is not provided inside the device case 10, and therefore, does not occupy the internal space of the device case 10, and at the same time, the influence of the human arm wearing on the antenna can be weakened by the conductive member 20.
In addition, whether the conductive member 20 is molded in the insulating bottom cover 10b or directly disposed on the outer surface of the insulating bottom cover 10b, the conductive member 20 should be as close to the arm wearing surface as possible to further improve the performance of the antenna. If the conductive member 20 is relatively far from the arm wear surface, the coupling between the missile member and the arm wear surface becomes poor, thereby adversely increasing the performance of the antenna.
Specifically, the insulating bottom cover 10b includes an outer surface for contacting the arm wearing surface of the human body and an inner surface disposed toward the metal middle frame, and when the conductive member 20 is molded in the insulating bottom cover 10b, a distance from the conductive member 20 to the inner surface is greater than or equal to a distance from the conductive member 20 to the outer surface. Preferably, when in-film injection molding is used, the conductive member 20 should be as close to the outer surface of the insulating bottom cover 10b as possible, i.e., the closer the conductive member 20 is to the arm-worn surface of the user, the better the performance improvement effect of the antenna. This is because the coupling with the arm-worn surface of the user is only formed when the conductive member 20 is close to the arm-worn surface of the user, and if the conductive member 20 is far from the arm-worn surface, for example, if the conductive member 20 is located inside the device case 10, i.e., in the metal center, it may be caused to be far from the arm-worn surface, and thus, the performance of the antenna may be adversely affected.
Further, the conductive member 20 may be a solid sheet-like structure or an annular sheet-like structure, for example, the conductive member 20 may be a square, round, oval, triangular, trapezoidal or the like sheet-like structure, and may also be an annular sheet-like structure such as a circular ring, a square ring, an elliptical ring, a triangular ring or the like (as shown in fig. 4 to 6). The thickness of the conductive member 20 is smaller and should be approximately equal to one tenth to one fifth of the thickness of the insulating bottom cover 10b, so that the thickness of the insulating bottom cover 10b is not increased by the conductive member 20, and the thickness of the whole device housing 10 can meet the requirements of users for light and thin.
In this embodiment, the conductive member 20 includes a ground plane parallel to the outer surface of the insulating bottom cover 10b contacting with the arm wearing surface, i.e. if the user wears the smart watch, the ground plane of the conductive member 20 is parallel to the arm wearing surface of the user, so that for the antenna inside the smart watch, it is equivalent to adding a grounded extension surface between the insulating bottom cover 10b and the arm, thereby increasing the performance of the antenna, reducing the influence of the arm on the signal of the low frequency band of the antenna, and achieving the purpose of enhancing the signal of the antenna in the low frequency band (700-960 Mhz).
Further, the projected area of the conductive member 20 on the outer surface of the insulating bottom cover 10b is greater than or equal to one tenth of the area of the outer surface of the insulating bottom cover 10b, that is, the area of the conductive member 20 should not be excessively large to ensure a certain distance between the conductive member 20 and the first portion 102, so as to improve the performance of the antenna. However, it should be noted that the area of the conductive member 20 is not too small, and if too small, the conductive member 20 has a poor effect as a ground extension surface for an antenna. Preferably, the projected area of the conductive member 20 on the outer surface of the insulating bottom cover 10b is approximately equal to one tenth of the area of the outer surface of the insulating bottom cover 10b, and at this time, the performance improvement effect for the antenna is optimal. It will be appreciated that the projected area of the conductive member 20 on the outer surface of the insulating bottom cover 10b may also be approximately equal to one eighth, one seventh, one sixth, one fifth, one quarter, one third, etc. of the area of the outer surface of the insulating bottom cover 10 b.
Further, the distance L from the outer edge of the conductive member 20 to the outer edge of the insulating bottom cover 10b opposite thereto is greater than or equal to 2mm. Specifically, as shown in fig. 4, taking the conductive member 20 as a square sheet, the outer surface of the insulating bottom cover 10b is also approximately square, the center of the conductive member 20 is collinear with the center of the outer surface of the insulating bottom cover 10b, the distance L between the outer edge of the conductive member 20 in the width direction and the outer edge of the outer surface of the insulating bottom cover 10b in the width direction is greater than or equal to 2mm, and the distance L between the outer edge of the conductive member 20 in the length direction and the outer edge of the outer surface of the insulating bottom cover 10b in the length direction is also greater than or equal to 2mm. In this way it is ensured that the conductive member 20 can increase the ground plane of the antenna while also enabling a certain distance between the conductive member 20 and the first part 102. If the distance between the conductive member 20 and the first portion 102 is too short, interference is easily caused, so that the performance of the antenna may not be improved, but may be reduced. Therefore, for the present invention, the distance from the outer surface of the conductive member 20 to the outer surface of the insulating bottom cover 10b opposite thereto should be greater than or equal to 2mm.
Preferably, the distance L from the outer edge of the conductive member 20 to the outer edge of the insulating bottom cover 10b opposite thereto is 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, 5mm, etc.
It is understood that the distance from the outer edge of the conductive member 20 in the width direction to the outer edge of the outer surface of the insulating bottom cover in the width direction may be equal to or different from the distance from the outer edge of the conductive member in the length direction to the outer edge of the insulating bottom cover in the length direction, and if the distances are equal, the center of the conductive member and the center of the insulating bottom cover may coincide.
Referring to fig. 7 and fig. 8 together, fig. 7 is a diagram simulating the intelligent wearable device of the present invention being worn on the arm of a user. The arm model 200 used in the present invention is made of silicone and carbon-based compound, which has a loss to electromagnetic waves. According to the description of the CTIA technical specification, the index of influence of the arm model 200 on electromagnetic waves comprises a dielectric constant, wherein the dielectric constant is related to frequency, and the larger the dielectric constant is, the larger the attenuation of the dielectric constant on antenna signals is, so that the attenuation coefficient of the arm model 200 selected by the invention on antenna signals is approximately equal to that of a real arm of a human body. As shown in fig. 8, the solid line in fig. 8 has square points thereon to increase the passive radiation performance curve of the design of the conductive component 20 for the smart watch of the present invention, and the solid line in fig. 8 is a passive radiation performance curve of the design of the conventional non-increased conductive component 20. As can be seen from fig. 8, the solution of adding the conductive component 20 according to the present invention, because the conductive component 20 can be used as a ground extension surface of the antenna, i.e. increase the ground surface of the antenna, there is a significant difference in radiation efficiency in the low frequency band (860-960 Mhz) of the antenna, that is, the attenuation of the signal in the low frequency band (860-960 Mhz) of the antenna is reduced by adopting the solution of the present invention, and the performance of the antenna in the low frequency band is effectively improved.
According to the intelligent wearing equipment with the antenna structure, the conductive part is additionally arranged, the conductive part is made to be as close to the arm wearing surface as possible, and meanwhile, the conductive part is connected with the grounding point and the second part, so that the conductive part can be used as a grounding extension part of the antenna, and the problems of small size of the intelligent wearing equipment, insufficient ground plane of the circuit board and performance attenuation of the antenna caused by the fact that the intelligent wearing equipment is worn on a user's arm are solved. By adopting the scheme of the invention, the signal of the antenna in the low frequency band can be effectively improved.
The above describes in detail an intelligent wearable device with an antenna structure disclosed in the embodiment of the present invention, and specific examples are applied to describe the principle and implementation of the present invention, where the description of the above embodiment is only used to help understand the core ideas of an intelligent wearable device and an intelligent terminal of the present invention; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present invention, the present description should not be construed as limiting the present invention in view of the above.
Claims (13)
1. Intelligent wearable device with antenna structure, characterized by comprising
The device comprises a device shell, wherein a circuit main board and an antenna structure are arranged in the device shell, the device shell comprises a metal middle frame and an insulating bottom cover connected to the bottom of the metal middle frame, at least one fracture is arranged on the metal middle frame, the metal middle frame is divided into at least two parts, namely a first part and a second part, by the at least one fracture;
the antenna structure comprises an antenna feed module and a plurality of antenna feed points, wherein one end of the antenna feed module is connected with the first part so that the first part is used as a radiator of an antenna, the other end of the antenna feed module is connected with the circuit main board, and the plurality of antenna feed points are arranged on the first part; the intelligent wearable device further comprises
The conductive component is arranged on the insulating bottom cover, the conductive component is connected to one of the antenna feed points, the antenna feed point connected with the conductive component is connected to the ground plane of the circuit main board, and the conductive component is connected to the second part so that the second part serves as the ground of the antenna.
2. The intelligent wearable device according to claim 1, wherein an antenna tuning module is further arranged in the device housing, a radio frequency module connected with the antenna tuning module is arranged on the circuit board, and the other end of the antenna feeding module is connected with the antenna tuning module so as to realize connection of the antenna feeding module and the circuit board.
3. The smart wearable device of claim 1, wherein the antenna feed location comprises a first feed location and a second feed location disposed at intervals, the antenna feed module being located between the first feed location and the second feed location;
the device comprises a circuit main board, and is characterized in that a first antenna tuning circuit and a second antenna tuning circuit are further arranged in the device shell, the first feed point is connected with the first antenna tuning circuit, the first antenna tuning circuit is connected with the ground plane of the circuit main board, and the second feed point is connected with the second antenna tuning circuit.
4. A smart wearable device according to claim 3, wherein the second portion is provided with a plurality of spaced ground points, and the conductive member is connected to one or more of the ground points on the second portion.
5. The smart wearable device of claim 4, further comprising a first functional module and a second functional module disposed within the device housing, the first functional module disposed proximate the first portion and the second functional module disposed proximate the second portion.
6. The smart wearable device of claim 5, wherein the ground points comprise first and second ground points disposed at intervals;
the first grounding point and the first feeding point are provided with the break joint, the second grounding point is arranged close to the second feeding point, and/or the break joint is arranged between the second grounding point and the second feeding point, and the first grounding point is arranged close to the first feeding point.
7. The smart wearable device of claim 6, wherein a projection of the first functional module on the insulating bottom cover is located between the first feed location and the second feed location, and a projection of the second functional module on the insulating bottom cover is located between the first feed location and the first ground location.
8. The smart wearable device of any of claims 1-7, wherein the conductive member is molded in-film within the insulating bottom cover or the conductive member is provided on an outer surface of the insulating bottom cover for contacting a human arm wear surface.
9. The smart wearable device of claim 8, wherein the conductive component comprises a ground plane that is parallel to the outer surface of the insulating bottom cover.
10. The smart wearable device of claim 8, wherein a projected area of the conductive component on the outer surface of the insulating bottom cover is greater than, equal to, one tenth of an area of the outer surface of the insulating bottom cover.
11. The smart wearable device of claim 10, wherein a distance from an outer edge of the conductive member to an outer edge of the insulating bottom cover opposite thereto is greater than or equal to 2mm.
12. The smart wearable device of claim 8, wherein the conductive component is a sheet-like structure or an annular sheet-like structure.
13. The intelligent wearable device according to any one of claims 1 to 7, wherein the fracture is filled with an insulating material, the conductive component is made of metal, and the insulating bottom cover is made of any one of plastic, silica gel, ceramic or glass.
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| CN201811286952.9A CN109301479B (en) | 2018-10-31 | 2018-10-31 | Intelligent wearable device with antenna structure |
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| CN201811286952.9A CN109301479B (en) | 2018-10-31 | 2018-10-31 | Intelligent wearable device with antenna structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109818137B (en) * | 2019-02-19 | 2024-02-09 | 深圳市飞亚达精密科技有限公司 | Multi-antenna device of mobile terminal |
| CN111142362B (en) * | 2019-06-13 | 2024-03-22 | 广东小天才科技有限公司 | Intelligent host capable of improving antenna performance and intelligent watch |
| CN112886205B (en) * | 2019-11-29 | 2022-11-15 | RealMe重庆移动通信有限公司 | Wearable electronic device |
| CN118259575A (en) * | 2022-12-20 | 2024-06-28 | 北京小米移动软件有限公司 | Shell assembly, wearable device and assembly method |
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