Antenna module and electronic equipment

Abstract

The embodiment of the utility model relates to the technical field of antennas, in particular to an antenna module and electronic equipment. Wherein the antenna module comprises a first radio frequency antenna, a first radio frequency chip, a detection antenna and an SAR (Synthetic Aperture Radar) sensor; the first radio frequency antenna is connected with the first radio frequency chip, the detection antenna is connected with the SAR sensor, and the first radio frequency antenna is further connected with the SAR sensor; the distance between the first radio frequency antenna and the detection antenna is smaller than the first distance. According to the technical scheme, the detection area of the electronic equipment on the same plane can be increased, so that the detection distance of the SAR sensor is increased.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of antennas, and in particular, to an antenna module and an electronic device. Background Art

[0002] In the related art, a certain radio frequency antenna in an electronic device is usually used as a detection antenna of a SAR sensor (SAR sensor). Among them, the SAR sensor (SAR sensor) can automatically detect whether a human body is approaching within a certain range from the detection antenna.

[0003] Using a certain radio frequency antenna, such as a medium-high frequency antenna, as the detection antenna of the SAR sensor as described above, due to limited antenna space and the relatively small area of the medium-high frequency antenna itself (the detection distance of the detection antenna is positively correlated with the area of the detection antenna), it is easy to cause the detection distance of the SAR sensor to be too small on a certain surface of the electronic device, resulting in insufficient detection distance of the SAR sensor on a certain surface of the electronic device. Summary of the Utility Model

[0004] Based on this, in view of the above technical problems, the present application provides an antenna module and an electronic device, which can increase the detection area on the same surface of the electronic device to improve the detection distance of the SAR sensor.

[0005] In a first aspect, the present application provides an antenna module, including:

[0006] A first radio frequency antenna, a first radio frequency chip, a detection antenna, and a SAR sensor;

[0007] The first radio frequency antenna is connected to the first radio frequency chip, the detection antenna is connected to the SAR sensor, and the first radio frequency antenna is also connected to the SAR sensor;

[0008] Wherein, the distance between the first radio frequency antenna and the detection antenna is less than a first distance.

[0009] In some embodiments, the antenna module further includes:

[0010] A DC blocking element, a first antenna elastic sheet, and a second antenna elastic sheet;

[0011] The first radio frequency antenna is connected to the first radio frequency chip and the SAR sensor respectively through the first antenna elastic sheet;

[0012] The detection antenna is connected to the SAR sensor and the first end of the DC blocking element respectively through the second antenna elastic sheet, and the second end of the DC blocking element is grounded.

[0013] In some embodiments, the distance between the first antenna elastic sheet and the second antenna elastic sheet is less than a second distance.

[0014] In some embodiments, the DC-blocking element includes a capacitor;

[0015] The capacitance value of the capacitor is between 20 pf and 100 pf.

[0016] In some embodiments, the antenna module further includes:

[0017] An anti-interference element, a first end of the anti-interference element is connected to a second end of the DC-blocking element, and a second end of the anti-interference element is grounded.

[0018] In some embodiments, the antenna module further includes:

[0019] A second RF antenna and a second RF chip, the second RF antenna is connected to the second RF chip;

[0020] The second RF antenna is also connected to the SAR sensor, and the distance between the second RF antenna and the detection antenna is less than the first distance.

[0021] In some embodiments, the antenna module further includes:

[0022] A third antenna elastic sheet;

[0023] The second RF antenna is respectively connected to the SAR sensor and the second RF chip through the third antenna elastic sheet.

[0024] In some embodiments, the distance between the third antenna elastic sheet and the second antenna elastic sheet is less than the second distance.

[0025] In a second aspect, the present application further provides an electronic device, including the antenna module as described in the first aspect.

[0026] In some embodiments, the electronic device further includes:

[0027] A main board and a housing;

[0028] The first RF antenna, the detection antenna, and the second RF antenna are all located on the housing;

[0029] The first RF chip, the SAR sensor, and the second RF chip are all located on the main board.

[0030] The antenna module provided by the embodiment of the present application includes: a first radio frequency antenna, a first radio frequency chip, a detection antenna, and a SAR sensor; the first radio frequency antenna is connected to the first radio frequency chip, the detection antenna is connected to the SAR sensor, and the first radio frequency antenna is also connected to the SAR sensor. By connecting the first radio frequency antenna to the SAR sensor, the first radio frequency antenna can be used as the detection antenna, so as to simultaneously exert the detection functions of the first radio frequency antenna and the detection antenna. The distance between the first radio frequency antenna and the detection antenna is set to be less than a first distance. When the antenna module is applied to an electronic device, the first radio frequency antenna and the detection antenna can be located on the same surface of the electronic device, thereby increasing the detection area on the same surface of the electronic device to improve the detection distance of the SAR sensor. Description of the Drawings

[0031] The drawings here are incorporated into the specification and form a part of this specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application.

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0033] Figure 1 It is a schematic structural diagram of an antenna module provided by an embodiment of the present application;

[0034] Figure 2 It is a schematic structural diagram of another antenna module provided by an embodiment of the present application;

[0035] Figure 3 It is a schematic structural diagram of yet another antenna module provided by an embodiment of the present application;

[0036] Figure 4 It is a schematic structural diagram of yet another antenna module provided by an embodiment of the present application;

[0037] Figure 5 It is a schematic structural diagram of an electronic device provided by an embodiment of the present application.

[0038] Among them, 111 is the first radio frequency antenna; 112 is the second radio frequency antenna; 121 is the first radio frequency chip; 122 is the second radio frequency chip; 13 is the detection antenna; 14 is the SAR sensor; 151 is the first antenna elastic sheet; 152 is the second antenna elastic sheet; 16 is the DC blocking element; 17 is the anti-interference element; C is the capacitor; L is the inductor; A1 is the first end of the DC blocking element; A2 is the second end of the DC blocking element; B1 is the first end of the first antenna elastic sheet; B2 is the second end of the first antenna elastic sheet; C1 is the first end of the second antenna elastic sheet; C2 is the second end of the second antenna elastic sheet; D1 is the first end of the anti-interference element; D2 is the second end of the anti-interference element; E1 is the first end of the third antenna elastic sheet; E2 is the second end of the third antenna elastic sheet. Detailed implementation manners

[0039] In order to make the objectives, technical solutions and advantages of the present application more clear and understandable, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0040] In the related art, in an electronic device, usually a certain radio frequency antenna, such as a medium-high frequency antenna, is used as the detection antenna of the SAR sensor. Due to the limited space of the antenna, the area of the medium-high frequency antenna itself is small (the detection distance of the detection antenna is positively correlated with the area of the detection antenna), which easily causes the detection distance of the SAR sensor to be too small on a certain surface of the electronic device, resulting in insufficient detection distance of the SAR sensor on a certain surface of the electronic device.

[0041] In view of the technical problems existing in the above-mentioned related art, the embodiment of the present application provides an antenna module. In the antenna module provided by the embodiment of the present application, by connecting the first radio frequency antenna to the SAR sensor, the first radio frequency antenna can be used as the detection antenna, so as to simultaneously exert the detection functions of the first radio frequency antenna and the detection antenna. The distance between the first radio frequency antenna and the detection antenna is set to be less than the first distance. When the antenna module is applied to an electronic device, the first radio frequency antenna and the detection antenna can be located on the same surface of the electronic device, thereby increasing the detection area on the same surface of the electronic device and improving the detection distance of the SAR sensor.

[0042] Next, the antenna module and the electronic device provided by the embodiment of the present application will be described exemplarily with reference to the accompanying drawings.

[0043] Figure 1 It is a schematic structural diagram of an antenna module provided by an embodiment of the present application. Among them, Figure 1 The antenna module can be applied to an electronic device. As Figure 1As shown in the figure, the antenna module includes: a first radio frequency antenna 111, a first radio frequency chip 121, a detection antenna 13, and an SAR sensor 14; the first radio frequency antenna 111 is connected to the first radio frequency chip 121, the detection antenna 13 is connected to the SAR sensor 14, and the first radio frequency antenna 111 is also connected to the SAR sensor 14; wherein, the distance between the first radio frequency antenna 111 and the detection antenna 13 is less than a first distance.

[0044] Specifically, in this embodiment, by providing the detection antenna 13 of the SAR sensor 14 and connecting the first radio frequency antenna 111 to the SAR sensor 14, the first radio frequency antenna 111 can be used as the detection antenna 13, so as to simultaneously exert the detection functions of the first radio frequency antenna 111 and the detection antenna 13.

[0045] Specifically, by setting the distance between the first radio frequency antenna 111 and the detection antenna 13 to be less than the first distance, the first radio frequency antenna 111 and the detection antenna 13 can be located on the same surface of the electronic device, thereby increasing the detection area on the same surface of the electronic device to improve the detection distance of the SAR sensor. Exemplarily, the first distance can be 11 millimeters. The first distance can be set according to the specific actual working conditions, and the present application does not specifically limit the first distance, as long as the first radio frequency antenna 111 and the detection antenna 13 can be simultaneously connected to the SAR sensor 14 to increase the detection area on the same surface of the electronic device.

[0046] Therefore, connecting the first radio frequency antenna 111 and the detection antenna 13 to the SAR sensor 14 simultaneously is equivalent to increasing the detection area of the detection antenna 13. When this antenna module is applied to an electronic device, it is beneficial to improve the detection distance of the SAR sensor 14.

[0047] Exemplarily, the first radio frequency antenna 111 can be a medium-high frequency antenna. Since the area of the medium-high frequency antenna is small, its detection area is small. When the medium-high frequency antenna and the detection antenna 13 are simultaneously connected to the SAR sensor 14, the detection functions of the first radio frequency antenna 111 and the detection antenna 13 are exerted simultaneously, thereby improving the problem in the related art that the detection distance of the SAR sensor 14 is too small or insufficient on a certain surface of the electronic device due to using the medium-high frequency antenna as the detection antenna 13 of the SAR sensor 14.

[0048] The antenna module provided by the embodiment of the present application includes: a first radio frequency antenna, a first radio frequency chip, a detection antenna, and a SAR sensor; the first radio frequency antenna is connected to the first radio frequency chip, the detection antenna is connected to the SAR sensor, and the first radio frequency antenna is also connected to the SAR sensor. By connecting the first radio frequency antenna to the SAR sensor, the first radio frequency antenna can be used as the detection antenna, so as to simultaneously exert the detection functions of the first radio frequency antenna and the detection antenna. The distance between the first radio frequency antenna and the detection antenna is set to be less than the first distance. When the antenna module is applied to an electronic device, the first radio frequency antenna and the detection antenna can be located on the same surface of the electronic device, thereby increasing the detection area on the same surface of the electronic device to improve the detection distance of the SAR sensor.

[0049] In some embodiments, as Figure 1 shown, the antenna module further includes: a DC blocking element 16, a first antenna elastic sheet 151, and a second antenna elastic sheet 152; the first radio frequency antenna 111 is respectively connected to the first radio frequency chip 121 and the SAR sensor 14 through the first antenna elastic sheet 151; the detection antenna 13 is respectively connected to the SAR sensor 14 and the first end A1 of the DC blocking element 16 through the second antenna elastic sheet 152, and the second end A2 of the DC blocking element 16 is grounded.

[0050] Among them, the first radio frequency antenna 111 and the detection antenna 13 are usually arranged on the housing of the electronic device, and the first radio frequency chip 121 and the SAR sensor 14 are usually arranged on the main board of the electronic device. It is necessary to conduct the antenna signals of the first radio frequency antenna 111 and the detection antenna 13 to the main board of the electronic device through the antenna elastic sheets to realize the electrical contact between the main board and the first radio frequency antenna 111 and the detection antenna 13, so as to realize the signal transmission.

[0051] Specifically, the first end B1 of the first antenna elastic sheet 151 is connected to the first radio frequency antenna 111, and the second end B2 of the first antenna elastic sheet 151 is respectively connected to the first radio frequency chip 121 and the SAR sensor 14, so as to realize the transmission of the antenna signal of the first radio frequency antenna 111 to the first radio frequency chip 121 and the SAR sensor 14. The first end C1 of the second antenna elastic sheet 152 is connected to the detection antenna 13, and the second end C2 of the second antenna elastic sheet 152 is connected to the SAR sensor 14, so as to realize the transmission of the antenna signal of the detection antenna 13 to the SAR sensor 14.

[0052] Among them, the second end C2 of the second antenna elastic sheet 152 is also connected to the first end A1 of the DC blocking element 16, and the second end A2 of the DC blocking element 16 is grounded. Specifically, by setting the DC blocking element 16 between the second antenna elastic sheet 152 and the grounding end, it is beneficial to block the transmission of the antenna signal (the antenna signal is a DC signal) of the detection antenna 13 to the grounding end, so as to enable the SAR sensor 14 to effectively obtain the antenna signal of the detection antenna 13.

[0053] In some embodiments, as Figure 1 shown, the distance between the first antenna elastic sheet 151 and the second antenna elastic sheet 152 is less than the second distance.

[0054] Among them, the first antenna elastic sheet 151 and the first radio frequency antenna 111 can form a first radiator, and the second antenna elastic sheet 152 and the detection antenna 13 can form a second radiator. Specifically, setting the distance between the first antenna elastic sheet 151 and the second antenna elastic sheet 152 to be less than the second distance enables the first radiator to be close to the second radiator, and a coupling effect can be generated between the first radiator and the second radiator. Due to the coupling effect between the first radiator and the second radiator, the detection antenna 13 in the second radiator will generate parasitic resonance for some frequency bands of the first radio frequency antenna 111 in the first radiator to improve the radiation efficiency of the first radio frequency antenna 111. Exemplarily, the second distance can be, for example, 10 mm. Among them, the second distance can be set according to the specific actual working conditions, and the present application does not make a specific limitation on the second distance.

[0055] Thus, while implementing to increase the detection area of the detection antenna 13, the embodiments of the present application can also use the detection antenna 13 as a coupling antenna of the first radio frequency antenna 111 to enhance the radiation efficiency of the first radio frequency antenna 111.

[0056] Exemplarily, as Figure 1 shown, the DC-blocking element 16 can be set as a capacitor C. Among them, the capacitance value of the capacitor C can be set to match the SAR sensor 14. Specifically, setting the capacitance value of the capacitor C to be between 20 pf and 100 pf is beneficial to improving the signal detection effect of the SAR sensor.

[0057] In some embodiments, Figure 2 is a schematic structural diagram of another antenna module provided by the embodiments of the present application. As Figure 2 shown, the antenna module further includes: an anti-interference element 17, a first end D1 of the anti-interference element 17 is connected to a second end A2 of the DC-blocking element 16, and a second end D2 of the anti-interference element 17 is grounded.

[0058] Among them, the anti-interference element 17 can be, for example, an inductor L. Specifically, by setting the anti-interference element 17, other interference signals can be removed to avoid the influence of the interference signals on the antenna signal of the detection antenna 13.

[0059] In some embodiments, Figure 3 is a schematic structural diagram of yet another antenna module provided by the embodiments of the present application. As Figure 3As shown, the antenna module further includes: a second radio frequency antenna 112 and a second radio frequency chip 122, and the second radio frequency antenna 112 is connected to the second radio frequency chip 122; the second radio frequency antenna 112 is also connected to the SAR sensor 14, and the distance between the second radio frequency antenna 112 and the detection antenna 13 is less than the first distance.

[0060] Specifically, by setting the second radio frequency antenna 112 to be connected to the SAR sensor 14 and the distance between the second radio frequency antenna 112 and the detection antenna 13 to be less than the first distance, the second radio frequency antenna 112 can also be used as a detection antenna. Thus, it is possible to connect the first radio frequency antenna 111, the second radio frequency antenna 112, and the detection antenna 13 to the SAR sensor 14 at the same time, further increasing the detection area of the detection antenna 13, and when the antenna module is applied to an electronic device, further improving the detection distance of the SAR sensor 14.

[0061] In some embodiments, as Figure 3 shown, the antenna module further includes: a third antenna elastic sheet 153; the second radio frequency antenna 112 is connected to the SAR sensor 14 and the second radio frequency chip 122 respectively through the third antenna elastic sheet 153.

[0062] Specifically, the first end E1 of the third antenna elastic sheet 153 is connected to the second radio frequency antenna 112, and the second end E2 of the third antenna elastic sheet 153 is connected to the second radio frequency chip 122 and the SAR sensor 14 respectively, so as to transmit the antenna signal of the second radio frequency antenna 112 to the second radio frequency chip 122 and the SAR sensor 14.

[0063] In some embodiments, as Figure 3 shown, the distance between the third antenna elastic sheet 153 and the second antenna elastic sheet 152 can be set to be less than the second distance.

[0064] Among them, the second antenna elastic sheet 152 and the detection antenna 13 can form a second radiator, and the third antenna elastic sheet 153 and the second radio frequency antenna 112 can form a third radiator. Specifically, by setting the distance between the second antenna elastic sheet 152 and the third antenna elastic sheet 153 to be less than the second distance, the second radiator is close to the third radiator, and a coupling effect can be generated between the second radiator and the third radiator. Due to the coupling effect between the second radiator and the third radiator, the detection antenna 13 in the second radiator will generate parasitic resonance for some frequency bands of the second radio frequency antenna 112 in the third radiator to improve the radiation efficiency of the second radio frequency antenna 112. Exemplarily, the second distance can be 10 mm, for example. Among them, the second distance can be set according to the specific actual working conditions, and the present application does not make a specific limitation on the second distance.

[0065] Thus, while the embodiments of the present application achieve an increase in the detection area of the detection antenna 13, the detection antenna 13 can also be used as a coupling antenna for the second radio frequency antenna 112 to enhance the radiation efficiency of the second radio frequency antenna 112.

[0066] In some embodiments, Figure 4 is a schematic structural diagram of another antenna module provided by the embodiments of the present application. As Figure 4 shown, the second radio frequency antenna 112 is not connected to the SAR sensor 14, but the distance between the third antenna elastic sheet 153 and the second antenna elastic sheet 152 is set to be less than the second distance. As a radiator, the detection antenna 13 will still generate parasitic resonance for certain frequency bands of the second radio frequency antenna 112 to improve the radiation efficiency of the second radio frequency antenna 112.

[0067] Based on the above embodiments, the embodiments of the present application also provide an electronic device. The electronic device includes the antenna module as described in the above embodiments, and thus has the same or similar beneficial effects, which will not be elaborated here.

[0068] In some embodiments, Figure 5 is a schematic structural diagram of an electronic device provided by the embodiments of the present application. As Figure 5 shown, the electronic device includes: a main board 18 and a housing 19; the first radio frequency antenna 111, the detection antenna 13, and the second radio frequency antenna 112 are all located on the housing 19; the first radio frequency chip 121, the SAR sensor 14, and the second radio frequency chip 122 are all located on the main board 18.

[0069] Among them, the first antenna elastic sheet 151, the second antenna elastic sheet 152, and the third antenna elastic sheet 153 are all arranged on the main board 18.

[0070] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0071] The above embodiments only represent several implementation manners of the present application. Their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. An antenna module, characterized in that, Comprising: A first RF antenna, a first RF chip, a detection antenna, and a SAR sensor; The first RF antenna is connected to the first RF chip, the detection antenna is connected to the SAR sensor, and the first RF antenna is also connected to the SAR sensor; Wherein, the distance between the first RF antenna and the detection antenna is less than a first distance.

2. The antenna module according to claim 1, wherein Further comprising: A DC-blocking element, a first antenna elastic sheet, and a second antenna elastic sheet; The first RF antenna is respectively connected to the first RF chip and the SAR sensor through the first antenna elastic sheet; The detection antenna is respectively connected to the SAR sensor and the first end of the DC-blocking element through the second antenna elastic sheet, and the second end of the DC-blocking element is grounded.

3. The antenna module according to claim 2, wherein The distance between the first antenna elastic sheet and the second antenna elastic sheet is less than a second distance.

4. The antenna module according to claim 2, characterized in that, The DC-blocking element includes a capacitor; The capacitance value of the capacitor is between 20 pf and 100 pf.

5. The antenna module according to claim 2, wherein, Further comprising: An anti-interference element, the first end of the anti-interference element is connected to the second end of the DC-blocking element, and the second end of the anti-interference element is grounded.

6. The antenna module according to claim 2, wherein Further comprising: A second RF antenna and a second RF chip, the second RF antenna is connected to the second RF chip; The second RF antenna is also connected to the SAR sensor, and the distance between the second RF antenna and the detection antenna is less than the first distance.

7. The antenna module according to claim 6, wherein Further comprising: A third antenna elastic sheet; The second RF antenna is respectively connected to the SAR sensor and the second RF chip through the third antenna elastic sheet.

8. The antenna module according to claim 7, characterized in that, The distance between the third antenna elastic sheet and the second antenna elastic sheet is less than the second distance.

9. An electronic device, characterized in that, Comprising the antenna module according to any one of claims 1-8.

10. The electronic device according to claim 9, wherein Further comprising: A main board and a housing; The first RF antenna, the detection antenna, and the second RF antenna are all located on the housing; The first RF chip, the SAR sensor, and the second RF chip are all located on the main board.

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