CN220914563U - Antenna assembly and electronic equipment - Google Patents
Antenna assembly and electronic equipment Download PDFInfo
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- CN220914563U CN220914563U CN202322581375.9U CN202322581375U CN220914563U CN 220914563 U CN220914563 U CN 220914563U CN 202322581375 U CN202322581375 U CN 202322581375U CN 220914563 U CN220914563 U CN 220914563U
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- 230000015556 catabolic process Effects 0.000 claims description 3
- 230000002159 abnormal effect Effects 0.000 description 8
- 238000001514 detection method Methods 0.000 description 4
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- 230000003071 parasitic effect Effects 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 2
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Abstract
The present utility model relates to the field of electronic devices, and in particular, to an antenna assembly and an electronic device. Wherein, this antenna assembly includes: the antenna radiator, the SAR sensor and the feed source are connected with the antenna radiator; the antenna radiator is grounded through the first capacitor and the modulation module; the capacitance value of the first capacitor is larger than a capacitance threshold value meeting the SAR anomaly mechanism. The utility model adopting the scheme can carry out circuit compatibility on the SAR sensor and simultaneously provide an antenna performance debugging function.
Description
Technical Field
The present utility model relates to the field of electronic devices, and in particular, to an antenna assembly and an electronic device.
Background
Along with the increase of the demands of people for mobile communication, electronic devices need to support more mobile frequency bands so as to meet the diversified scene demands of people, and meanwhile, the radiation to human bodies, which is brought by antennas, cannot be ignored. Specific absorption rate (Specific Absorption Rate, SAR) indicators can be used to measure the amount of energy absorbed by the body in electromagnetically exposed environments. The conductive power of the antenna can be reduced by combining software and hardware, but the scheme needs to introduce a third party device SAR sensor and make circuit compatibility. But circuit compatibility may limit antenna tuning resulting in a loss of antenna performance.
Disclosure of utility model
The utility model provides an antenna assembly and electronic equipment, and mainly aims to provide an antenna performance debugging function while carrying out circuit compatibility on an SAR sensor.
According to an aspect of the present utility model, there is provided an antenna assembly comprising:
the antenna radiator, the SAR sensor and the feed source are connected with the antenna radiator;
The antenna radiator is grounded through the first capacitor and the modulation module;
The capacitance value of the first capacitor is larger than a capacitance threshold value meeting the SAR exception mechanism.
Optionally, in an embodiment of the present utility model, the feed source is connected to a first upper frame point of the antenna radiator, a first end of the first capacitor is connected to a second upper frame point of the antenna radiator, a second end of the first capacitor is connected to a first end of the modulation module, and a second end of the modulation module is grounded;
the SAR sensor is connected with the first upper frame point or the second upper frame point.
Optionally, in one embodiment of the present utility model, the modulation module includes a second capacitor and a dc pass element; wherein,
The second end of the first capacitor is connected with the first end of the second capacitor and the first end of the direct current conducting element respectively, and the second end of the second capacitor and the second end of the direct current conducting element are grounded;
The capacitance value of the first capacitor is larger than that of the second capacitor.
Optionally, in an embodiment of the present utility model, the capacitance value of the second capacitor is smaller than a capacitance threshold value satisfying the SAR anomaly mechanism.
Optionally, in an embodiment of the present utility model, the dc conductive element is a first inductor, a magnetic bead, or an avalanche breakdown diode.
Optionally, in one embodiment of the present utility model, a second inductor is further included; wherein,
The SAR sensor is connected with the antenna radiator through the second inductor.
Optionally, in one embodiment of the present utility model, an antenna matching circuit is further included; wherein,
The feed source is connected with the first upper frame point through the antenna matching circuit.
Optionally, in one embodiment of the present utility model, the antenna matching circuit includes a third capacitor and a third inductor; wherein,
The first end of the third capacitor is connected with the first upper frame point, a connection point between the second end of the third capacitor and the first end of the third inductor is connected with the feed source, and the second end of the third inductor is grounded.
Optionally, in an embodiment of the present utility model, the first upper frame point is a feeding point, and the second upper frame point is a lower point.
According to another aspect of the present utility model, there is provided an electronic apparatus including: an antenna assembly as claimed in any one of the preceding aspects.
In summary, an antenna assembly provided by an embodiment of the present utility model includes: the antenna radiator, the SAR sensor and the feed source are connected with the antenna radiator; the antenna radiator is grounded through the first capacitor and the modulation module; the capacitance value of the first capacitor is larger than a capacitance threshold value meeting the SAR anomaly mechanism. Therefore, the circuit compatibility of the SAR sensor can be realized, the antenna performance debugging function can be provided, the antenna performance loss can be reduced, and the degree of freedom of antenna debugging can be increased.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The foregoing and/or additional aspects and advantages of the utility model will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
Fig. 1 is a schematic structural diagram of an antenna assembly according to an embodiment of the present utility model;
Fig. 2 is a schematic structural diagram of an antenna assembly according to another embodiment of the present utility model;
fig. 3 is a schematic structural diagram of an antenna assembly according to another embodiment of the present utility model.
Reference numerals illustrate: the antenna radiator 1, the first upper frame point 11, the second upper frame point 12, the first capacitor C1, the second capacitor C2, the third capacitor C3, the first inductor L1, the second inductor L2, and the third inductor L3.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model. On the contrary, the embodiments of the utility model include all alternatives, modifications and equivalents as may be included within the spirit and scope of the appended claims.
It should be noted that, in order for the electronic device to meet the SAR requirement, the SAR of the electronic device may be reduced in the following two ways:
in the first mode, the SAR value of the antenna is changed from the upper design, so that the directivity of the antenna is prevented from being too concentrated;
in the second mode, the conducting power of the antenna is reduced by combining software and hardware.
The second approach is simpler to implement than the first approach, but requires the introduction of a third party device SAR sensor (sensor) and circuit compatibility for the SAR sensor. The SAR sensor is used for sensing the approach of a human body, and when the SAR sensor works normally, the background capacitance value of the SAR sensor is a background capacitance threshold value. In order to prevent abnormal operation of the SAR sensor caused by the loss of SAR related circuits in the electronic equipment, and further cause the exceeding of SAR, an abnormal mechanism needs to be entered.
It should be noted that, the capacitance fluctuation of the whole electronic device is about from the second capacitance threshold value X2pF to the third capacitance threshold value X3pF, and in order for the abnormal mechanism to work normally, the capacitance value in the circuit is required to be larger than about the first capacitance threshold value X1pF. However, the antenna is tuned using a capacitance less than a fourth capacitance threshold X4pF, the fourth capacitance threshold X4pF being less than the first capacitance threshold X1pF. Under the condition that the capacitance value in the setting circuit is smaller than the fourth capacitance threshold value X4pF, the abnormal mechanism is not effective due to the fact that the missing part cannot be detected, and the SAR sensor cannot work normally at the moment, and finally the SAR of the electronic equipment exceeds the standard.
In summary, the requirement that the capacitance value in the circuit must be greater than the first capacitance threshold X1pF limits the tuning scheme of the antenna, which may in certain cases lose antenna performance.
The present utility model will be described in detail with reference to specific examples.
Fig. 1 is a schematic structural diagram of an antenna assembly according to an embodiment of the present utility model.
As shown in fig. 1, the antenna assembly includes:
the antenna radiator 1, the SAR sensor and the feed source are connected with the antenna radiator;
the antenna radiator 1 is grounded through the first capacitor C1 and the modulation module.
According to some embodiments, when the SAR sensor is connected to the antenna radiator 1, the antenna radiator 1 may act as a sensing patch (pad) of the SAR sensor, so that the SAR sensor calculates the distance between the target object and the antenna radiator 1 according to the capacitance between the antenna radiator 1 and the target object.
In some embodiments, the capacitance value of the first capacitance C1 is greater than a capacitance threshold that satisfies the SAR anomaly mechanism, which may enable the SAR sensor to have an anomaly detection mechanism. The capacitance threshold may be adjusted, for example, according to the actual application scenario.
According to some embodiments, the modulation module may be used to debug the performance of the antenna.
In some embodiments, the feed is connected to the antenna radiator 1, so that the antenna radiator 1 radiates in a corresponding frequency band.
Alternatively, in one embodiment of the present utility model, as shown in FIG. 1,
The feed source is connected with a first upper frame point 11 of the antenna radiator 1, a first end of the first capacitor C1 is connected with a second upper frame point 12 of the antenna radiator 1, a second end of the first capacitor C1 is connected with a first end of the modulation module, and a second end of the modulation module is grounded.
According to some embodiments, only the form of connection of the SAR sensor to the first upper frame point 11 is shown in fig. 1, but the SAR sensor may be connected to the first upper frame point 11 or the second upper frame point 12, which is not particularly limited by the embodiment of the present utility model.
For example, the SAR sensor may form a current loop through the first upper frame point 11, the antenna radiator 1, and the second upper frame point 12 in order to achieve SAR detection, as shown in fig. 2. The SAR sensor may also form a current loop through the second upper frame point 12, the antenna radiator 1 and the first upper frame point 11 in order to achieve SAR detection, as shown in fig. 3.
Optionally, in one embodiment of the present utility model, as shown in fig. 2 and 3, the modulation module includes a second capacitor C2 and a dc pass element; wherein,
The second end of the first capacitor C1 is respectively connected with the first end of the second capacitor C2 and the first end of the direct current conducting element, and the second ends of the second capacitor C2 and the second end of the direct current conducting element are grounded;
the capacitance of the first capacitor C1 is larger than the capacitance of the second capacitor C2.
According to some embodiments, the capacitance value of the second capacitance C2 is smaller than a capacitance threshold that satisfies the SAR anomaly mechanism.
For example, the capacitance value of the first capacitor C1 may be greater than the first capacitance threshold X1pF, the capacitance value of the second capacitor C2 may be less than the fourth capacitance threshold X4pF, and the fourth capacitance threshold X4pF is less than the first capacitance threshold X1pF.
In some embodiments, the current in the current loop between the SAR sensor and the antenna radiator 1 is a direct current, which can thus pass through the dc pass element to ground below the antenna radiator. The dc conductive element includes, but is not limited to, a first inductor L1, a magnetic bead, an avalanche breakdown diode, or the like.
According to some embodiments, the dc pass device does not affect the characteristics of the second capacitor C2.
In some embodiments, when the dc-on element is the first inductor L1, the antenna performance can be tuned by adjusting the inductance value of the first inductor L1 and the capacitance value of the second capacitor C2.
Optionally, in one embodiment of the present utility model, the antenna assembly further includes a second inductance L2; wherein,
The SAR sensor is connected to the antenna radiator via a second inductance L2.
According to some embodiments, as shown in fig. 2 and 3, the SAR sensor may be connected with the first upper frame point 11 or the second upper frame point 12 of the antenna radiator through a second inductance L2.
In some embodiments, the SAR sensor is connected with the antenna radiator through the second inductor L2, so that accuracy of the SAR sensor in SAR detection can be improved.
Optionally, in an embodiment of the present utility model, as shown in fig. 2 and 3, the antenna assembly further includes an antenna matching circuit; wherein,
The feed source is connected with the first upper frame point 11 through an antenna matching circuit.
According to some embodiments, the antenna matching circuit is configured to match the frequency band radiated by the antenna radiator 1 according to the feed source.
In some embodiments, as shown in fig. 2, the antenna matching circuit includes a third capacitor C3 and a third inductance L3; wherein,
The first end of the third capacitor C3 is connected with the first upper frame point 11, a connection point between the second end of the third capacitor C3 and the first end of the third inductor L3 is connected with a feed source, and the second end of the third inductor L3 is grounded.
In some embodiments, the frequency band radiated by the antenna radiator 1 can be adjusted by adjusting the capacitance value of the third capacitor C3 and the inductance value of the third inductor L3.
Alternatively, in one embodiment of the present utility model, as shown in fig. 2 and 3, the first upper frame point 11 may be a feeding point and the second upper frame point 12 may be a lower point.
It should be noted that, although the antenna radiator 1 may further include other upper frame points other than the first upper frame point 11 and the second upper frame point 12, the SAR sensor only needs to use the first upper frame point 11 and the second upper frame point 12. The other upper frame point may be a feeding point or a lower point.
Optionally, in one embodiment of the present utility model, when the SAR sensor is operating normally, the background capacitance detected by the SAR sensor is the sum of the capacitance of the first capacitor C1, the capacitance of the third capacitor C3, and the capacitance of the ambient parasitic capacitor C λ, in which case the SAR sensor will not trigger the anomaly mechanism.
According to some embodiments, when the second capacitor C2 is dropped, the background capacitance value detected by the SAR sensor is still the sum of the capacitance value of the first capacitor C1, the capacitance value of the third capacitor C3, and the capacitance value of the environmental parasitic capacitor C λ, so that even if the modulation module is dropped, normal operation of the SAR sensor is not affected, and the SAR sensor does not trigger an abnormal mechanism.
In some embodiments, when the first capacitor C1 is dropped, the background capacitance detected by the SAR sensor is reduced to be the sum of the capacitance of the third capacitor C3 and the capacitance of the ambient parasitic capacitor C λ. When the first inductor L1 is dropped, the background capacitance of the SAR sensor is reduced to be the sum of the series capacitance of the first capacitor C1 and the second capacitor C2, the capacitance of the third capacitor C3, and the capacitance of the environmental parasitic capacitor C λ. In this case, the SAR sensor will trigger an anomaly mechanism.
According to some embodiments, when the abnormal mechanism of the SAR sensor is not effective, the SAR sensor may control the feed source to call power according to the status normally reported by the SAR sensor. If the abnormal mechanism of the SAR sensor is effective, the SAR sensor can control the feed source to hard reduce power to be below a threshold range so as to finish SAR reduction, so that the SAR of the electronic equipment is not out of standard.
In summary, an antenna assembly provided by an embodiment of the present utility model includes: the antenna radiator, the SAR sensor and the feed source are connected with the antenna radiator; the antenna radiator is grounded through the first capacitor and the modulation module; the capacitance value of the first capacitor is larger than a capacitance threshold value meeting the SAR anomaly mechanism. Therefore, the circuit compatibility of the SAR sensor can be realized, the antenna performance debugging function can be provided, the antenna performance loss can be reduced, and the degree of freedom of antenna debugging can be increased.
According to the embodiment of the utility model, the utility model further provides electronic equipment.
The electronic device includes: and an antenna assembly as in any of the previous embodiments.
In summary, according to the electronic device provided by the embodiment of the utility model, the modulation module is added, and the antenna radiator is grounded through the first capacitor and the modulation module, wherein the capacitance value of the first capacitor is larger than the capacitance threshold value meeting the SAR abnormal mechanism. Therefore, the circuit compatibility of the SAR sensor can be realized, the antenna performance debugging function can be provided, the antenna performance loss can be reduced, and the degree of freedom of antenna debugging can be increased.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms may be directed to different embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. An antenna assembly, comprising:
the antenna radiator, the SAR sensor and the feed source are connected with the antenna radiator;
The antenna radiator is grounded through the first capacitor and the modulation module;
The capacitance value of the first capacitor is larger than a capacitance threshold value meeting the SAR exception mechanism.
2. The antenna assembly of claim 1 wherein,
The feed source is connected with a first upper frame point of the antenna radiator, a first end of the first capacitor is connected with a second upper frame point of the antenna radiator, a second end of the first capacitor is connected with a first end of the modulation module, and a second end of the modulation module is grounded;
the SAR sensor is connected with the first upper frame point or the second upper frame point.
3. The antenna assembly of claim 2, wherein the modulation module comprises a second capacitor and a dc pass element; wherein,
The second end of the first capacitor is connected with the first end of the second capacitor and the first end of the direct current conducting element respectively, and the second end of the second capacitor and the second end of the direct current conducting element are grounded;
The capacitance value of the first capacitor is larger than that of the second capacitor.
4. The antenna assembly of claim 3, wherein a capacitance value of the second capacitance is less than a capacitance threshold that satisfies a SAR anomaly mechanism.
5. The antenna assembly of claim 3, wherein the dc conductive element is a first inductor, a magnetic bead, or an avalanche breakdown diode.
6. The antenna assembly of claim 1, further comprising a second inductance; wherein,
The SAR sensor is connected with the antenna radiator through the second inductor.
7. The antenna assembly of claim 2, further comprising an antenna matching circuit; wherein,
The feed source is connected with the first upper frame point through the antenna matching circuit.
8. The antenna assembly of claim 7, wherein the antenna matching circuit comprises a third capacitance and a third inductance; wherein,
The first end of the third capacitor is connected with the first upper frame point, a connection point between the second end of the third capacitor and the first end of the third inductor is connected with the feed source, and the second end of the third inductor is grounded.
9. The antenna assembly of claim 2, wherein the first upper frame point is a feed point and the second upper frame point is a down point.
10. An electronic device, comprising: an antenna assembly as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322581375.9U CN220914563U (en) | 2023-09-21 | 2023-09-21 | Antenna assembly and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322581375.9U CN220914563U (en) | 2023-09-21 | 2023-09-21 | Antenna assembly and electronic equipment |
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| Publication Number | Publication Date |
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| CN220914563U true CN220914563U (en) | 2024-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202322581375.9U Active CN220914563U (en) | 2023-09-21 | 2023-09-21 | Antenna assembly and electronic equipment |
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| CN (1) | CN220914563U (en) |
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- 2023-09-21 CN CN202322581375.9U patent/CN220914563U/en active Active
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