CN215497060U - SAR induction system and terminal - Google Patents
SAR induction system and terminal Download PDFInfo
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- CN215497060U CN215497060U CN202122224131.6U CN202122224131U CN215497060U CN 215497060 U CN215497060 U CN 215497060U CN 202122224131 U CN202122224131 U CN 202122224131U CN 215497060 U CN215497060 U CN 215497060U
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Abstract
The disclosure relates to an SAR induction system and terminal, wherein, SAR induction system includes frame antenna, SAR sensor and connecting circuit board, and the SAR sensor passes through the connecting circuit board and is connected with the side frame of frame antenna. In the SAR induction device, the SAR sensor is connected with the side frame of the frame antenna through the connecting circuit board, the electrical length of the frame antenna cannot be influenced by the SAR sensor and the circuit of the side frame, the frequency deviation and the power loss of the antenna can be better avoided, and the use experience of a user is improved.
Description
Technical Field
The disclosure relates to the technical field of terminals, in particular to an SAR induction device and a terminal.
Background
The SAR is generally called Specific Absorption Rate in english, and the chinese is generally called electromagnetic wave Absorption ratio or Specific Absorption Rate, which refers to the electromagnetic wave energy Absorption ratio of a mobile phone or a wireless product, and is defined as: under the action of the external electromagnetic field, an induction electromagnetic field is generated in the human body. Since various organs of the human body are lossy media, the electromagnetic field in the body will generate electric currents, resulting in absorption and dissipation of electromagnetic energy. SAR is commonly used in biological dosimetry to characterize this physical process. SAR has the meaning of the electromagnetic power absorbed or consumed per unit mass of human tissue, in W/kg, US standard (1.6mw/g, 1g average). Namely, the SAR size indicates the influence of the electromagnetic radiation of the mobile phone on the human health.
At present, in a terminal such as a mobile phone, an L-shaped floating frame is used as an antenna and also as an inductive PAD (inductive sheet) of an SAR Sensor (SAR Sensor), wherein the SAR Sensor is disposed on a sub-board of the terminal, a signal channel is connected with an elastic sheet of a bottom frame of the L-shaped floating frame through a wiring, that is, the SAR Sensor is connected with the bottom frame through a wiring and an elastic sheet, so that whether a human body is close to the front, back, right and bottom surfaces of the terminal is induced, and then the SAR is reduced by reducing the power of the terminal. However, this approach tends to cause antenna frequency offset (frequency shift) and also causes a loss in antenna efficiency.
SUMMERY OF THE UTILITY MODEL
In order to overcome the problems in the related art, the present disclosure provides an SAR sensing device and a terminal.
According to a first aspect of the embodiments of the present disclosure, a SAR sensing device is provided, which is applied to a terminal, and includes a frame antenna, a SAR sensor and a connection circuit board, where the SAR sensor is connected to a side frame of the frame antenna through the connection circuit board.
Optionally, the connection circuit board includes a flexible circuit board, the SAR sensor is connected to a first end of the flexible circuit board, and the side frame is connected to a second end of the flexible circuit board.
Optionally, the SAR sensing device includes a first elastic piece, and the SAR sensor is connected to the first end of the flexible circuit board through the first elastic piece.
Optionally, the SAR induction device includes an antenna platelet, and the second end of the flexible circuit board is connected to the side frame through the antenna platelet.
Optionally, the SAR sensing device includes a second elastic piece, and the antenna platelet is connected to the second end of the flexible circuit board through the second elastic piece.
Optionally, the bezel antenna comprises an L-shaped floating bezel.
According to a second aspect of embodiments of the present disclosure, a terminal is provided, which includes the SAR induction device according to any one of the first aspect.
Optionally, the terminal further includes a speaker assembly and a middle frame, and the connection circuit board of the SAR sensing device is located between the speaker assembly and the middle frame.
Optionally, the middle frame is used for grounding, and the conductive part of the first surface of the connection circuit board is connected to the middle frame, where the first surface is a surface of the connection circuit board close to the middle frame.
Optionally, the conductive portion comprises an exposed copper portion.
Optionally, an isolation layer is laid on a second surface of the connection circuit board, wherein the second surface is a surface of the connection circuit board close to the speaker assembly.
Optionally, the isolation layer comprises a copper layer.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: in the SAR induction device, the SAR sensor is connected with the side frame of the frame antenna through the connecting circuit board, the electrical length of the frame antenna cannot be influenced by the SAR sensor and the circuit of the side frame, the frequency deviation and the power loss of the antenna can be better avoided, and the use experience of a user is improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the utility model and together with the description, serve to explain the principles of the utility model.
Fig. 1' is a partial schematic view of a terminal shown according to the related art.
Fig. 1 is a partial schematic diagram of a terminal shown in accordance with an example embodiment.
Fig. 2 is a schematic diagram of a SAR sensing device according to an exemplary embodiment.
Fig. 3 is a partial cross-sectional view of a SAR induction device shown according to an exemplary embodiment.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the utility model, as detailed in the appended claims.
In the related art, referring to fig. 1 ', a speaker assembly 10' is disposed between a side frame of an L-shaped floating frame 1 'and an SAR sensor 2', so that the SAR sensor 2 'is connected to a bottom frame 12' of the L-shaped floating frame 1 ', a connection position is equivalent to an end of the L-shaped floating frame 1', and a line between the SAR sensor 2 'and the connection position may extend an electrical length of the L-shaped floating frame 1', which may cause frequency offset and efficiency loss of an antenna, and user experience is poor.
The disclosure provides an SAR (specific Absorption rate) sensing device applied to a terminal. In the SAR induction device, the SAR sensor is connected with the side frame of the frame antenna through the connecting circuit board, the electrical length of the frame antenna cannot be influenced by the SAR sensor and the circuit of the side frame, the frequency deviation and the power loss of the antenna can be better avoided, and the use experience of a user is improved.
In the specification, the term "connected" in the present disclosure includes both direct connection and indirect connection. In addition, "connected" in the present disclosure generally refers to structural connection, and electrical connection is achieved through structural connection, unless otherwise specified.
Referring to fig. 1 and 2, in an exemplary embodiment, a SAR sensing apparatus is provided for use in a terminal. The SAR induction device comprises a frame antenna 1, an SAR sensor 2 and a connecting circuit board 3, wherein the SAR sensor 2 is connected with a side frame of the frame antenna 1 through the connecting circuit board 3. In the SAR induction device, whether a human body approaches the terminal is directly induced by the frame antenna 1, and then the SAR of the terminal is determined.
In the terminal provided with the SAR sensing device, when the frame antenna 1 senses that a human body approaches, capacitance value change similar to a capacitance form is formed between the frame antenna 1 and the human body, and an analog signal is generated. The analog signal may then be transmitted to the SAR sensor 2 through the connection circuit board 3. After the SAR sensor 2 receives the analog signal, a corresponding digital signal can be generated according to the analog signal. The terminal reduces the power of the terminal according to the digital signal to reduce the SAR of the terminal (wherein the larger the power, the larger the SAR).
The frame antenna 1 may include an L-shaped suspension frame, and the L-shaped suspension frame is used as an antenna of the terminal and also used as an inductive PAD (inductive PAD) of the SAR inductive device. It should be noted that, in the SAR sensing device, the frame antenna 1 may also be a suspension frame with other shapes, which is not described herein again. The floating frame is generally a metal frame, and the floating frame is generally separated from other metal frames of the terminal by the partition bars, so that the floating frame is not electrically connected with other metal frames of the terminal, and is therefore referred to as a floating frame.
It should be noted that the tuning points of the L-shaped floating frame are typically located on the side frame. In this SAR induction system, SAR sensor 2 can include through connecting circuit board 3 and side frame connection, and SAR sensor 2 is connected with the tuning point of frame antenna 1 through connecting circuit board 3 for circuit between hookup location and SAR sensor 2 can not influence the electric length of frame antenna 1, can avoid antenna frequency deviation and power loss, promotes user's use and experiences.
In one exemplary embodiment, a SAR sensing apparatus is provided for use in a terminal. Referring to fig. 1 and 2, in the SAR induction device, the connection Circuit board 3 may include a Flexible Printed Circuit (FPC).
Among them, the flexible printed circuit board is generally a printed circuit board with high reliability and excellent flexibility, which is made of polyimide or polyester film as a base material. Flexible circuit boards generally have the characteristics of high wiring density, light weight, thin thickness, good bendability, and the like. Based on the characteristics of the flexible circuit board, the installation at the terminal is more convenient.
In the SAR induction device, when the connecting circuit board 3 is a flexible circuit board, the SAR sensor 2 is connected with the first end of the flexible circuit board, and the side frame is connected with the second end of the flexible circuit board so as to realize the connection of the SAR sensor 2 and the side frame.
Wherein, the SAR sensor 2 can be arranged on the sub-board 30 of the terminal, and the SAR sensor 2 is connected with the first end of the flexible circuit board through the wiring 8 on the sub-board 30. For example, the SAR sensing device may include a first elastic sheet 5, and the first elastic sheet 5 is generally a conductive structure, such as a metal elastic sheet. The first end of the flexible circuit board can be connected with the wiring 8 on the auxiliary board 30 through the first elastic sheet 5.
In the case of example 1, the following examples,
referring to fig. 1 and 2, the terminal is a mobile phone, which includes a main board and a sub board 30, wherein the SAR sensor 2 is integrated in a sensor chip, and the sensor chip is disposed on the sub board 30. The sub-board 30 is generally disposed at the bottom of the mobile phone. The bottom of the mobile phone can be generally provided with a speaker assembly 10, and the speaker assembly 10 is located between the side frame of the frame antenna 1 and the sub-board 30 in the width direction of the mobile phone.
In the mobile phone, the SAR sensor 2 can be connected with the first elastic sheet 5 through the wiring 8 of the auxiliary plate 30, and the first elastic sheet 5 is connected with the first end of the flexible circuit board. The first end of the flexible circuit board is connected with the first elastic sheet 5 through plugging or welding, and the first elastic sheet 5 can be pressed between the auxiliary board 30 and the middle frame 20 of the mobile phone, so that the flexible circuit board is reliably connected with the wiring 8 on the auxiliary board 30 through the first elastic sheet 5. In addition, the first elastic sheet 5 and the sub-board 30 can be fastened and fixed by a fastener (e.g., a screw, etc.), so as to better ensure that the flexible circuit board is reliably electrically connected with the sub-board 30 through the first elastic sheet 5.
Based on the characteristics of the flexible circuit board, the flexible circuit board can easily bypass the speaker assembly 10(SPK BOX) so that the second end of the flexible circuit board is connected to the side frame. The terminal comprises a terminal, the flexible circuit board can be arranged on one side, close to the middle frame 20, of the loudspeaker assembly 10, arrangement of the loudspeaker assembly 10 is not affected, and connection of the SAR sensor 2 and a side frame of the frame antenna 1 through the flexible circuit board can be achieved.
Of course, the flexible circuit board may be located elsewhere on the speaker assembly 10, so long as the flexible circuit board can be connected to the side frame around the speaker assembly 10. For example, the terminal may include a display screen and the flexible circuit board may be located on a side of the speaker assembly 10 adjacent the display screen.
In this SAR induction system, SAR sensor 2 accessible flexible circuit board is connected with the side frame of frame antenna 1, and based on the characteristic of flexible circuit board, other devices (for example speaker subassembly 10) of terminal bottom can be walked around better to the flexible circuit board, are more convenient for realize being connected of SAR sensor 2 and side frame, have improved this SAR induction system's suitability.
It should be noted that the connection circuit board 3 may also be another common circuit board, as long as it can avoid other devices of the terminal and achieve connection between the SAR sensor 2 and the side frame of the frame antenna 1.
In one exemplary embodiment, a SAR sensing apparatus is provided for use in a terminal. As shown with reference to fig. 1 and 2, the SAR sensing device may include an antenna platelet 4(ANT plate). In the terminal, the antenna platelet 4 is generally connected with the tuning point of the side frame in the frame antenna 1, therefore, the second end of the flexible circuit board can be connected with the side frame of the frame antenna 1 through the antenna platelet 4, the existing devices of the terminal are reasonably utilized, the size of the flexible circuit board is shortened, the cost is saved, and the flexible circuit board is more convenient to arrange.
The SAR sensing device may include a second elastic sheet 6, the second elastic sheet 6 may have the same structure as the first elastic sheet 5, and the second elastic sheet 6 is generally a conductive structure, such as a metal elastic sheet. The second end of the flexible circuit board is connected with the antenna platelet 4 through the second elastic sheet 6. As an example of this, the following is given,
in the case of example 1, the following examples,
referring to fig. 1 and 2, the terminal is a mobile phone, which includes a main board and a sub board 30, wherein the SAR sensor 2 is integrated in a sensor chip, and the sensor chip is disposed on the sub board 30. The sub-board 30 is generally disposed at the bottom of the mobile phone. The bottom of the mobile phone can be provided with a speaker assembly 10 and an antenna small plate 4, and the speaker assembly 10 and the antenna small plate 4 are both located between the side frame of the frame antenna 1 and the sub-plate 30 in the width direction of the mobile phone.
In the mobile phone, the SAR sensor 2 can be connected with the first elastic sheet 5 through the wiring 8 of the auxiliary plate 30, and the first elastic sheet 5 is connected with the first end of the flexible circuit board. The second end of the flexible circuit board is connected with the antenna small plate 4 through the second elastic sheet 6, and the antenna small plate 4 is connected with the side frame through the third elastic sheet 7.
The second end of the flexible circuit board is connected with the second elastic sheet 6 through plugging or welding, and the second elastic sheet 6 can be pressed between the antenna small plate 4 and the middle frame 20 of the mobile phone, so that the flexible circuit board is reliably connected with the antenna small plate 4 through the first elastic sheet 5. In addition, the second elastic sheet 6 and the sub-board 30 can be fastened and fixed by a fastener (e.g., a screw, a bolt, etc.), so as to better ensure that the flexible circuit board is reliably electrically connected with the sub-board 30 through the second elastic sheet 6.
Due to the characteristics of the flexible circuit board, the flexible circuit board can easily bypass the speaker assembly 10(SPK BOX) so that the second end of the flexible circuit board is connected to the antenna platelet 4. The flexible circuit board can be arranged on one side of the loudspeaker assembly 10 close to the terminal display screen, so that the arrangement of the loudspeaker assembly 10 is not affected, and the connection of the SAR sensor 2 and the side frame of the frame antenna 1 through the flexible circuit board can be realized.
The third elastic sheet 7 and the second elastic sheet 6 may have the same structure, and the third elastic sheet 7 is generally a conductive structure, such as a metal elastic sheet. The metal spring located in the side frame may also be referred to as an upper frame spring, and the upper frame spring is generally located at a tuning point of the bezel antenna 1. The side frame is connected with the third elastic sheet 7 in an inserting or welding mode, and the third elastic sheet 7 can be locked and fixed with the small antenna plate through a fastener (such as a screw, a screw and the like) so as to better ensure that the small antenna plate 4 is electrically connected with the side frame through the third elastic sheet 7.
In this example, the SAR sensor 2 is connected to the tuning point on the side frame sequentially through the wiring 8 of the sub-board 30, the first elastic sheet 5, the flexible circuit board, the second elastic sheet 6, the antenna small plate 4 and the third elastic sheet 7.
That is, in this example, the frame antenna 1 serves as an induction sheet of the SAR induction device, and is used for inducing a human body, generating an analog signal according to an induction result, and then transmitting the analog signal to the SAR sensor 2 through the antenna platelet 4, the flexible circuit board, and the like, the SAR sensor 2 calls the received analog signal as a digital signal, and the terminal adjusts the power of the terminal according to the digital signal, thereby controlling the SAR of the terminal.
In this SAR induction system, can realize being connected of SAR sensor 22 and the side frame of frame antenna 1, the electric length of frame antenna 1 can not influenced by the circuit between SAR sensor 2 and the frame antenna 1, can avoid antenna frequency deviation and power loss, promotes user's use and experiences.
In one exemplary embodiment, a terminal is provided, such as a mobile phone, a laptop, a tablet, a wearable device, and the like. The terminal can comprise the SAR induction device, so that the control of the terminal SAR is realized, the antenna frequency deviation and the power loss are avoided, and the use experience of a user is improved.
Referring to fig. 1 to 3, the terminal may include a speaker assembly 10 and a middle frame 20, wherein the connection circuit board 3 of the SAR sensing apparatus is located between the speaker assembly 10 and the middle frame 20, that is, the connection circuit board 3 is located at a side of the speaker assembly 10 close to the middle frame 20, so that the SAR sensor 2 may be connected to a side frame of the bezel antenna 1 by bypassing the speaker assembly 10.
The surface of the connection circuit board 3 close to the middle frame 20 may be referred to as a first surface, a conductive portion (e.g., a copper exposed portion) of the first surface of the connection circuit board 3 is connected to the middle frame 20, and the middle frame 20 is used for grounding, so that the connection circuit board 3 can be grounded through the middle frame 20. For example, the exposed copper portion of the first surface of the connecting circuit board 3 may be adhered to the middle frame 20 through a double-sided conductive cloth, so as to electrically connect the connecting circuit board 3 and the middle frame 20, and further, the grounding of the connecting circuit board 3 may be realized.
The side of the connection circuit board 3 close to the speaker assembly 10 may be referred to as a second side, and an isolation layer may be laid on the second side of the connection circuit board 3 to isolate signal interference of the speaker assembly 10. For example, the second side of the connection circuit board 3 may be laid with a copper layer, which isolates the interference of the speaker assembly 10 and ensures reliable operation of the SAR sensing device.
In the case of example 1, the following examples,
referring to fig. 1 to 3, the terminal may be a mobile phone, and the bottom of the mobile phone is provided with an antenna platelet 4, a speaker assembly 10, a sub-board 30 and a flexible circuit board, wherein the sub-board 30 is provided with a sensor chip on which the SAR sensor 2 is arranged. The mobile phone is further provided with an L-shaped suspension frame, when a display screen of the mobile phone faces a user, the L-shaped suspension frame is located at the lower right corner of the mobile phone, a tuning point on a side frame of the L-shaped suspension frame is provided with a third elastic sheet 7, and the third elastic sheet 7 is connected with the antenna small plate 4.
The SAR sensor 2 is connected with the first elastic sheet 5 through the wiring 8 of the auxiliary plate 30, and the first elastic sheet 5 is connected with the first end of the flexible circuit board. The second end of the flexible circuit board is connected with the antenna small plate 4 through the second elastic sheet 6, so that the electrical connection between the SAR sensor 2 and the tuning point of the side frame can be realized.
In the mobile phone, the L-shaped suspension frame can sense a human body from the front (the surface where the display screen is located), the back (the back is opposite to the front), the right (the surface where the side frame of the L-shaped suspension frame is located) and the bottom (the surface where the bottom frame of the L-shaped suspension frame is located) of the mobile phone.
When the L-shaped suspension frame senses that a human body approaches the mobile phone, the generated analog signal is transmitted to the sensor chip through the tuning point, the third elastic sheet 7, the antenna small plate 4, the second elastic sheet 6, the flexible circuit board, the first elastic sheet 5 and the wiring 8 of the auxiliary plate 30, then the sensor chip converts the analog signal into a digital signal, and the power of the terminal is reduced based on the digital signal, so that the SAR of the mobile phone is reduced.
It should be noted that, in the terminal, the isolation layer mainly avoids the interference of the speaker assembly 10 on the signal channel and the reference channel in the connection circuit board 3, where the signal channel is used to transmit the analog signal sensed by the frame antenna 1 (e.g., L-shaped suspended frame), and the reference channel is a trace that is parallel to the signal channel difference and mainly used to sense the temperature change near the signal channel, so as to perform the difference calibration on the signal channel, avoid the temperature from affecting the analog signal, and ensure the stability of the signal in the signal channel.
In the terminal, the circuit between the SAR sensor 2 and the frame antenna 1 has small influence on the electrical length of the frame antenna 1, so that the frequency deviation and the power loss of the antenna can be reduced, moreover, the interference of the loudspeaker assembly 10 on SAR induction can be better avoided, and the use experience of a user is further improved.
Other embodiments of the utility model will be apparent to those skilled in the art from consideration of the specification and practice of the utility model disclosed herein. This application is intended to cover any variations, uses, or adaptations of the utility model following, in general, the principles of the utility model and including such departures from the present disclosure as come within known or customary practice within the art to which the utility model pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the utility model being indicated by the following claims.
Other embodiments of the utility model will be apparent to those skilled in the art from consideration of the specification and practice of the utility model disclosed herein. This application is intended to cover any variations, uses, or adaptations of the utility model following, in general, the principles of the utility model and including such departures from the present disclosure as come within known or customary practice within the art to which the utility model pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the utility model being indicated by the following claims.
It will be understood that the utility model is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the utility model is limited only by the appended claims.
Claims (12)
1. The SAR induction device is applied to a terminal and is characterized by comprising a frame antenna, an SAR sensor and a connecting circuit board, wherein the SAR sensor is connected with a side frame of the frame antenna through the connecting circuit board.
2. The SAR sensing device of claim 1, wherein the connection circuit board comprises a flexible circuit board, the SAR sensor is connected to a first end of the flexible circuit board, and the side frame is connected to a second end of the flexible circuit board.
3. The SAR sensing device of claim 2, characterized in that SAR sensing device includes a first spring, the SAR sensor is connected with the first end of the flexible circuit board through the first spring.
4. The SAR induction device of claim 2, wherein the SAR induction device comprises an antenna platelet, and wherein the second end of the flexible circuit board is connected to the side frame through the antenna platelet.
5. The SAR sensing device of claim 4, wherein the SAR sensing device comprises a second elastic sheet, and the antenna platelet is connected with the second end of the flexible circuit board through the second elastic sheet.
6. The SAR induction device of any of claims 1-5, characterized in that the bezel antenna comprises an L-shaped floating bezel.
7. A terminal, characterized in that it comprises a SAR sensing device according to any one of claims 1-6.
8. The terminal of claim 7, further comprising a speaker assembly and a middle frame, wherein the connection circuit board of the SAR sensing device is located between the speaker assembly and the middle frame.
9. A terminal according to claim 8, wherein the middle frame is adapted to be grounded, and the conductive portion of the first side of the connection circuit board is connected to the middle frame, wherein the first side is a side of the connection circuit board adjacent to the middle frame.
10. A terminal according to claim 9, wherein the conductive portion comprises an exposed copper portion.
11. A terminal as claimed in claim 8, wherein a second side of the connection circuit board is populated with an isolation layer, wherein the second side is a side of the connection circuit board adjacent the speaker assembly.
12. A terminal as claimed in claim 11, wherein the isolating layer comprises a copper layer.
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| CN202122224131.6U CN215497060U (en) | 2021-09-14 | 2021-09-14 | SAR induction system and terminal |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2024092901A1 (en) * | 2022-10-31 | 2024-05-10 | 宜宾市天珑通讯有限公司 | Antenna performance debugging method, mobile apparatus, and storage medium |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024092901A1 (en) * | 2022-10-31 | 2024-05-10 | 宜宾市天珑通讯有限公司 | Antenna performance debugging method, mobile apparatus, and storage medium |
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