Antenna structure and electronic equipment

Abstract

The utility model relates to an antenna structure and electronic equipment. The antenna structure comprises an antenna radiator capable of forming a radio frequency signal; the at least one upper frame point is arranged at the end part of the antenna radiator, and each upper frame point is grounded; the specific absorption rate SAR sensor is connected to one upper frame point; wherein the transmitting power of the antenna structure is associated with the detection result of the SAR sensor. According to the embodiment of the invention, the SAR detection of the side key can be realized, and the adjustment of the transmitting power is more flexible.

Description

Technical Field

[0001] This disclosure relates to the field of antenna technology, and more particularly to an antenna structure and electronic device. Background Technology

[0002] With the rapid development of wireless communication technology, electronic devices have become an indispensable part of public life. Furthermore, with the continuous upgrading of electronic devices such as smartphones, and especially with the implementation of specific absorption rate (SAR) regulations for electromagnetic radiation in different regions, people are paying increasing attention to the antenna performance of antenna structures in electronic devices and the electromagnetic radiation safety of these devices. To improve radiation safety, how to adjust antenna performance when a human body is detected approaching has become an urgent problem to be solved. Summary of the Invention

[0003] To overcome the problems existing in related technologies, this disclosure provides an antenna structure and electronic device that can flexibly adjust the transmission power.

[0004] According to a first aspect of the present disclosure, an antenna structure is provided, comprising:

[0005] An antenna radiator is capable of generating radio frequency signals;

[0006] At least one upper frame point is disposed at the end of the antenna radiator, and each of the upper frame points is grounded;

[0007] A specific absorptivity SAR sensor is connected to one of the points on the upper frame;

[0008] The transmit power of the antenna structure is correlated with the detection result of the SAR sensor.

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

[0010] The first isolation component is connected to the grounding line corresponding to each of the upper frame points;

[0011] The SAR sensor is connected to a connection line between one of the upper frame points and the first isolation component;

[0012] Specifically, for the radio frequency signal of the antenna radiator, the first isolation component makes the grounding line a path;

[0013] In response to the operating signal of the SAR sensor, the first isolation component makes the grounding line open.

[0014] In some embodiments, the antenna structure further includes:

[0015] The second isolation component is connected in series with the first isolation component on the grounding line corresponding to each of the upper frame points, with one end connected to the first isolation component and the other end grounded.

[0016] The second isolation component is used to isolate clutter and adjust the grounding position of the antenna radiator so that the antenna radiator operates in a preset wavelength mode.

[0017] In some embodiments, the first isolation component includes: a first capacitor component; and / or,

[0018] The second isolation component includes: a second capacitor component and a first inductor component arranged in parallel;

[0019] The capacitance of the first capacitor component is greater than that of the second capacitor component.

[0020] In some embodiments, the antenna structure further includes:

[0021] Feed potential, set on the antenna radiator, is used to excite the antenna radiator to operate in the mid-to-high frequency band;

[0022] At least one of the top frame points includes: a first top frame point, a second top frame point, and a third top frame point;

[0023] The first upper frame point, the second upper frame point, and the third upper frame point are located on the same side of the feed potential;

[0024] The second upper frame point is located between the first upper frame point and the third upper frame point;

[0025] The SAR sensor is connected to the second upper frame point.

[0026] In some embodiments, the antenna radiator has a first upper frame position and a second upper frame position; the distance between the second upper frame position and the feed potential is less than the distance between the first upper frame position and the feed potential;

[0027] The first upper frame point is set at the first upper frame position;

[0028] The second upper frame point and the third upper frame point are set at the second upper frame position.

[0029] In some embodiments, the antenna structure further includes:

[0030] The feed terminal is connected to the feed potential;

[0031] A tuning circuit is connected to the connection line between the feed terminal and the feed potential, and includes a switching assembly for tuning the operating frequency band of the antenna radiator when the switching assembly is in different switching states.

[0032] The third isolation component is connected at one end to the node of the connection line between the tuning circuit and the feed potential, and at the other end to ground.

[0033] In some embodiments, the third isolation component includes: a second inductor component and a third capacitor component;

[0034] The third capacitor assembly and the second inductor assembly are connected in series on the connection line between the node and ground.

[0035] In some embodiments, the antenna structure further includes:

[0036] The third inductor assembly is connected in series in the connection line between the upper frame point and the SAR sensor;

[0037] A protection diode is provided, with one end connected to the connection line between the third inductor assembly and the SAR sensor, and the other end grounded.

[0038] In some embodiments, the antenna structure further includes:

[0039] The parasitic branch has a first end and a second end;

[0040] The first end is grounded;

[0041] The second end has a gap with the antenna radiator;

[0042] The distance between the gap and the upper frame point is greater than the distance between the gap and the feed potential of the antenna structure.

[0043] According to a second aspect of the present disclosure, an electronic device is provided, comprising:

[0044] Antenna structures as described in one or more of the above embodiments;

[0045] The volume buttons are located on the side of the electronic device;

[0046] The volume button's volume pressing portion is reused as the antenna radiator of the antenna structure.

[0047] In some embodiments, the electronic device further includes:

[0048] The power button and the volume button are located on the same side of the electronic device;

[0049] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects:

[0050] This embodiment connects an antenna radiator to a SAR sensor, enabling SAR detection. Furthermore, compared to existing methods that directly reduce the transmission power to a fixed level, this embodiment allows for control of the antenna structure to have different transmission powers based on the correlation between the detection results and the transmission power. This makes the adjustment of the transmission power more flexible, improving both electromagnetic radiation safety and antenna radiation performance, thereby solving the problem of having to reduce the transmission power to a fixed level when a human body is nearby.

[0051] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0052] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0053] Figure 1 This is a schematic diagram of an antenna structure according to an exemplary embodiment. Figure 1 .

[0054] Figure 2 This is a schematic diagram of an antenna structure according to an exemplary embodiment. Figure 2 .

[0055] Figure 3 This is a schematic diagram of high-frequency waveforms in the antenna structure of this disclosure during transmission and reception, according to an exemplary embodiment.

[0056] Figure 4 This is a schematic diagram illustrating the mid-to-high frequency band efficiency of the antenna structure of the present disclosure under different states, according to an exemplary embodiment.

[0057] Figure 5 This is a schematic diagram of high-frequency waveforms in the transmission and reception of a conventional antenna structure according to an exemplary embodiment.

[0058] Figure 6 This is a schematic diagram illustrating the mid-to-high frequency efficiency of a conventional antenna structure under different states, according to an exemplary embodiment.

[0059] Figure 7 This is a schematic diagram of the structure of an electronic device according to an exemplary embodiment.

[0060] Figure 8 This is a structural block diagram of an electronic device according to an exemplary embodiment. Detailed Implementation

[0061] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0062] This disclosure provides an antenna structure applicable to communication scenarios involving SAR value detection. For example, when the antenna structure operates in the mid-to-high frequency band, the antenna structure of this disclosure can be used to adjust the antenna structure to have different transmission powers based on the detection results of the SAR sensor, thereby achieving more flexible adjustment of antenna performance.

[0063] Figure 1 This is a schematic diagram of an antenna structure according to an exemplary embodiment. Figure 1 .like Figure 1 As shown, the antenna structure includes:

[0064] The antenna radiator 101 is capable of generating radio frequency signals;

[0065] At least one upper frame point 102 is disposed at the end of the antenna radiator 101, and each of the upper frame points 102 is grounded;

[0066] A specific absorptivity SAR sensor 103 is connected to one of the upper frame points 102;

[0067] The transmit power of the antenna structure is correlated with the detection result of the SAR sensor.

[0068] In this embodiment of the disclosure, the antenna structure is used to transmit and receive wireless signals, and can transmit and receive wireless communications such as Bluetooth (BT), WiFi, GPS, Universal Mobile Telecommunications System (UMTS), Long Term Evolution (LTE), and satellite communication.

[0069] It should be noted that the antenna structure can be applied to electronic devices, including smartphones, tablets, laptops, wearable devices, and personal digital assistants (PDAs). Wearable devices include, but are not limited to, smartwatches or smart bracelets.

[0070] In this embodiment of the disclosure, the antenna radiator is suspended. In some embodiments, the antenna structure may include a non-metallic frame in which the antenna radiator can be suspended. Here, the antenna radiator may be injection molded into the non-metallic frame. The non-metallic frame includes at least a plastic frame.

[0071] It should be noted that the antenna radiator can be used for transmitting and receiving in the mid-to-high frequency bands. For example, the antenna radiator can be used for transmitting and receiving in the B3 band, B39 band, B1 band, B40 band, or B41 band, etc.

[0072] At least one of the aforementioned top frame points is located on the antenna radiator, and each top frame point is grounded. That is, the antenna structure has at least one top frame line, and each top frame line is grounded. Here, each top frame point can be connected to the ground wire of the electronic device's motherboard via a grounding spring.

[0073] It should be noted that the upper frame point set on the antenna radiator is not the feeding upper frame point, but the grounding upper frame point, and different upper frame points have different grounding lines.

[0074] For example, the antenna structure may be provided with two upper frame points and two ground lines corresponding to the two upper frame points.

[0075] It should be noted that the more points on the upper frame of the antenna structure, the more corresponding grounding lines there are, which can increase the isolation between the antenna structure and other antennas, thus better reducing interference between adjacent antennas.

[0076] In some embodiments, Figure 2 This is a schematic diagram of an antenna structure according to an exemplary embodiment. Figure 2 .like Figure 2 As shown, the antenna structure further includes:

[0077] The first isolation component 104 is connected to the grounding line corresponding to each of the upper frame points 102;

[0078] The SAR sensor 103 is connected to a connection line between the upper frame point 102 and the first isolation component 104;

[0079] Specifically, for the radio frequency signal of the antenna radiator, the first isolation component makes the grounding line a path;

[0080] In response to the operating signal of the SAR sensor, the first isolation component makes the grounding line open.

[0081] The aforementioned first isolation component is connected to the grounding line corresponding to each upper frame point. In other words, a first isolation component is connected to each grounding line. That is, the number of upper frame points is the same as the number of first isolation components, and one first isolation component is installed on the grounding line corresponding to each upper frame point.

[0082] For example, such as Figure 2 As shown, there are three points 102 in the upper frame and three first isolation components 104. The three first isolation components 104 are respectively connected to the grounding lines corresponding to different points in the upper frame.

[0083] The aforementioned SAR sensor is connected to a connection line between the upper frame point and the first isolation component. That is, the signal output from the upper frame point can be shunted not only to the SAR sensor but also to the grounding line where the first isolation component is located. Here, shunting to the SAR sensor enables SAR sensor detection. Shunting to the grounding line where the first isolation component is located enables the radio frequency signal of the antenna radiator to return to ground.

[0084] In this embodiment of the disclosure, for the radio frequency signal of the antenna radiator, the first isolation component makes the grounding line a closed circuit; for the operating signal of the SAR sensor, the first isolation component makes the grounding line an open circuit. That is to say, setting the first isolation component can isolate the signal interference between the SAR sensor and the antenna radiator, so that the SAR sensor can perform better detection, and the radio frequency signal can flow back to ground, so that the antenna radiator can work better as an antenna radiator.

[0085] It should be noted that the first isolation component can be used to disconnect the grounding line for the working signal of the SAR sensor and to make the grounding line a circuit for the radio frequency signal. The isolation device included in the first isolation component is not limited in this respect in this embodiment of the disclosure.

[0086] For example, the first isolation component may be composed of a capacitor, or it may be composed of a capacitor connected in series or in parallel with an inductor.

[0087] The aforementioned SAR sensor can detect the capacitance of the induced capacitor formed when a human body approaches the antenna radiator in order to obtain the detection result.

[0088] It should be noted that capacitance can be used to determine how close a human body is to the antenna radiator. When the capacitance of the induced capacitor increases, it can be determined that the human body is approaching the antenna radiator; when the capacitance of the induced capacitor decreases, it can be determined that the human body is moving away from the antenna radiator.

[0089] In this embodiment, the transmit power of the antenna structure is correlated with the detection results of the SAR sensor, and thus the transmit power of the antenna structure can be adjusted based on the detection results of the SAR sensor. In other words, this embodiment can determine the proximity of a human body to the antenna radiator based on the detected capacitance, and then adjust the transmit power of the antenna structure accordingly. That is, different capacitance values ​​indicated by the detection results in this embodiment will correspond to different transmit power values ​​for the antenna structure.

[0090] For example, when the capacitance determines that a human body is close to the antenna radiator, i.e., when the capacitance increases, the transmission power of the antenna structure can be reduced so that the antenna SAR value is within the range of SAR regulations, thereby improving electromagnetic radiation safety.

[0091] When determining the distance between a human body and the antenna radiator based on capacitance, it is not necessary to reduce the transmission power of the antenna structure. In this way, the antenna structure can operate at the maximum transmission power to improve the antenna radiation performance.

[0092] It is understood that the embodiments of this disclosure connect an antenna radiator to a SAR sensor, enabling SAR detection. Furthermore, compared to existing methods that directly reduce the transmission power to a fixed level, the embodiments of this disclosure can control the antenna structure to have different transmission powers based on the correlation between the detection results and the transmission power. This makes the adjustment of the transmission power more flexible, not only improving electromagnetic radiation safety but also enhancing antenna radiation performance, thereby solving the problem of only being able to reduce the transmission power to a fixed level when a human body is nearby.

[0093] In some embodiments, such as Figure 2 As shown, the antenna structure further includes:

[0094] The second isolation component 105 is connected in series with the first isolation component 104 on the grounding line corresponding to each of the upper frame points 102, and one end is connected to the first isolation component 104, and the other end is grounded;

[0095] The second isolation component 105 can be used to isolate clutter and adjust the grounding position of the antenna radiator so that the antenna radiator operates in a preset wavelength mode.

[0096] In this embodiment, adjacent antennas are disposed near the antenna structure. Considering that, compared to an inverted F antenna (IFA), a suspended antenna radiator poses a risk of introducing clutter to adjacent antennas, this embodiment introduces a second isolation component. This component allows the radio frequency signal of the antenna radiator to return to ground and isolates clutter, thereby improving the isolation between the antenna structure and adjacent antennas.

[0097] It should be noted that by setting a second isolation component on each grounding line, the isolation can be maximized and the impact of the antenna structure on the transmission and reception performance of adjacent antennas can be reduced.

[0098] In this embodiment of the disclosure, the second isolation component can also be used to adjust the grounding position of the antenna radiator so that the antenna radiator operates in a preset wavelength mode.

[0099] For example, the second isolation component can adjust the grounding position of the antenna radiator so that the antenna radiator operates in a quarter-wavelength mode, which is more conducive to exciting the antenna radiator to work.

[0100] In this embodiment of the disclosure, the second isolation component may be composed of a capacitor and an inductor, or it may be composed of a capacitor and a resistor; this embodiment of the disclosure does not limit this.

[0101] In some embodiments, such as Figure 2 As shown, the first isolation component 104 includes: a first capacitor component; and / or,

[0102] The second isolation component 105 includes: a second capacitor component and a first inductor component arranged in parallel;

[0103] The capacitance of the first capacitor component is greater than that of the second capacitor component.

[0104] For example, the first capacitor component can be set to 33pF; the second capacitor component can be set to 2pF; and the first inductor component can be set to 68nH.

[0105] It is understood that in the embodiments of this disclosure, the first stage of each grounding line is provided with a first isolation component to isolate signal interference between the SAR sensor and the antenna radiator; the second stage is provided with a second isolation component, which can not only isolate clutter and reduce the impact on the transmission and reception performance of adjacent antennas, but also adjust the grounding position of the antenna radiator so that the antenna radiator operates in a preset wavelength mode. Thus, the antenna structure of the embodiments of this disclosure can achieve flexible adjustment of transmission power to improve electromagnetic wave radiation safety and antenna radiation performance, and can also reduce interference to adjacent antennas and SAR sensors.

[0106] In some embodiments, such as Figure 2 As shown, the antenna structure further includes:

[0107] Feed potential 106 is set on the antenna radiator 101 to excite the antenna radiator 101 to operate in the mid-to-high frequency band;

[0108] At least one of the upper frame points 102 includes: a first upper frame point 102a, a second upper frame point 102b, and a third upper frame point 102c;

[0109] The first upper frame point 102a, the second upper frame point 102b, and the third upper frame point 102c are located on the same side of the feed potential 106;

[0110] The second upper frame point 102b is located between the first upper frame point 102a and the third upper frame point 102c;

[0111] The SAR sensor 103 is connected to the second upper frame point 102b.

[0112] In this embodiment of the disclosure, the feed potential is set on the antenna radiator, which can transmit a feed signal to the antenna radiator to excite the antenna radiator to operate in the mid-to-high frequency band.

[0113] It should be noted that the first upper frame point, the second upper frame point, and the third upper frame point are located on the same side of the feed potential. The distance from the first upper frame point to the feed potential can be greater than the distance from the third upper frame point to the feed potential; the distance from the first upper frame point to the feed potential can be less than the distance from the third upper frame point to the feed potential, and this embodiment of the present disclosure does not impose any restrictions on this.

[0114] In this embodiment of the present disclosure, the antenna structure is provided with three upper frame points, and the antenna structure has three grounding lines connecting the three upper frame points, and each grounding line is connected to a first isolation component and a second isolation component.

[0115] Understandably, by setting three grounding points on the top frame, the isolation between the antenna structure and other antennas can be increased, thus better reducing interference between adjacent antennas.

[0116] Furthermore, the embodiment of this disclosure connects the SAR sensor to the second upper frame point, which makes it easier to stack the devices and makes the device layout more reasonable.

[0117] In some embodiments, such as Figure 2 As shown, the antenna radiator 101 has a first upper frame position and a second upper frame position; the distance between the second upper frame position and the feed potential 106 is less than the distance between the first upper frame position and the feed potential 106;

[0118] The first upper frame point 102a is set at the first upper frame position;

[0119] The second upper frame point 102b and the third upper frame point 102c are located at the second upper frame position.

[0120] Understandably, the second and third top frame points can share a single top frame position. This not only makes layout easier but also saves top frame space and reduces material costs.

[0121] In some embodiments, such as Figure 2 As shown, the antenna structure further includes:

[0122] The power supply terminal 107 is connected to the power supply potential 106;

[0123] The tuning circuit 108 is connected to the connection line between the feed terminal 107 and the feed potential 106, and includes a switching assembly for tuning the operating frequency band of the antenna radiator when the switching assembly is in different switching states.

[0124] The third isolation component 109 is connected at one end to the node of the connection line between the tuning circuit 108 and the feed potential 106, and at the other end to ground.

[0125] In this embodiment of the disclosure, the feed terminal can be used to output a feed signal to transmit the feed signal to the antenna radiator through the feed potential in order to excite the antenna radiator to work.

[0126] It should be noted that the feed terminal connects to an RF circuit, which includes at least: a first amplifier, an antenna switch, a filter, a duplexer, and a second amplifier. The first amplifier amplifies the electrical signal in the signal output channel. The antenna switch switches between receiving and transmitting electrical signals, and between different frequency bands of the antenna. The filter allows signals from a specific frequency band to pass through while filtering out signals from other frequency bands. The duplexer isolates the transmitted and received electrical signals, enabling the antenna to function properly when simultaneously receiving and transmitting wireless signals. The second amplifier amplifies the electrical signal in the signal receiving channel. Thus, the feed terminal enables both antenna signal reception and transmission, allowing the antenna radiator to operate more effectively.

[0127] In this embodiment, the feed terminal is connected to the connection line between the feed terminal and the feed potential, and includes a switching component. Here, the tuning circuit may further include at least a fourth capacitor component and a fourth inductor component. When the switching component is in different switching states, the tuning circuit has different impedances, thereby enabling the tuning of the antenna radiator's operating frequency band. Here, different impedances correspond to the antenna radiator operating in different frequency bands.

[0128] For example, such as Figure 2 As shown, the switching assembly may include a first controlled switch S1, a second controlled switch S2, a third controlled switch S3 and a fourth controlled switch S4; the fourth capacitor assembly may include a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5 and a sixth capacitor C6; and the fourth inductor assembly may include a first inductor L1 and a second inductor L2.

[0129] Here, the first capacitor C1 can be set to 2.4pF, the second capacitor C2 to 2pF, the third capacitor C3 to 0.3pF, the fourth capacitor C4 to 0.2pF, the fifth capacitor C5 to 5pF, and the sixth capacitor C6 to 0.2pF; the first inductor L1 can be set to 2.5nH, and the second inductor L2 to 6.8nH. The six capacitors in the fourth capacitor assembly and the two inductors in the fourth inductor assembly, along with the four controlled switches, are connected in series and parallel, enabling the antenna radiator to transmit and receive wireless signals in different frequency bands when switching different switch states.

[0130] It should be noted that, as Figure 2 As shown, the tuning circuit 108 may also include a first zero-ohm resistor R1. One end of this zero-ohm resistor R1 is connected to the second capacitor C2 and the fifth capacitor C5, and the other end is connected to the feed terminal 107 and the sixth capacitor C6. Thus, the first zero-ohm resistor can serve as a jumper to simplify wiring, as a test point, as a current limiting function in conjunction with a protection diode, and as a reserved location for future circuit upgrades or modifications.

[0131] In this embodiment of the disclosure, the third isolation component is used to isolate clutter to improve the isolation between the antenna and the adjacent antenna, and reduce the impact of the antenna structure on the transmission and reception performance of the adjacent antenna.

[0132] It should be noted that the third isolation component may be composed of a capacitor, or it may be composed of a capacitor and an inductor. This disclosure does not limit this.

[0133] It is understood that the embodiments of this disclosure provide a second isolation component and a third isolation component, which can isolate clutter to the greatest extent to improve the isolation between the antenna and the adjacent antenna, and reduce the impact of the antenna structure on the transmission and reception performance of the adjacent antenna.

[0134] In some embodiments, such as Figure 2 As shown, the third isolation component 109 includes: a second inductor component 110 and a third capacitor component 111;

[0135] The third capacitor assembly 111 and the second inductor assembly 110 are connected in series on the connection line between the node K and the ground.

[0136] In this embodiment of the disclosure, the third capacitor component and the second inductor component can be equivalent to a small capacitor to filter out noise and improve isolation.

[0137] It should be noted that the third capacitor assembly may include a 0.3pF capacitor, and the second inductor assembly may include a 1.5nH inductor. When the antenna radiator operates at high frequencies, the third capacitor assembly and the second inductor assembly can be equivalent to a 0.3pF capacitor.

[0138] It is understandable that by setting up a third isolation component, including a second inductor component and a third capacitor component, clutter can be isolated to reduce the impact of the antenna structure on adjacent antennas.

[0139] In some embodiments, such as Figure 2 As shown, the antenna structure further includes:

[0140] The third inductor assembly 112 is connected in series on a connection line between the upper frame point 102 and the SAR sensor 103;

[0141] The protection diode 113 has one end connected to the connection line between the third inductor component 112 and the SAR sensor 103, and the other end grounded.

[0142] In this embodiment of the disclosure, the third inductor component can be used to isolate the radio frequency signal of the antenna radiator while allowing the operating signal of the SAR sensor to pass through.

[0143] For example, the third inductor component includes a 100nH inductor device.

[0144] It should be noted that, as Figure 2 As shown, a second zero-ohm resistor R2 can also be provided between the third inductor assembly 112 and the SAR sensor 103. One end of the protection diode 113 is connected to the connection line between the third inductor assembly 112 and the second zero-ohm resistor R2, and the other end is grounded. In this way, the second zero-ohm resistor can be used as a jumper to simplify wiring, as a test point, as a current limiting function in conjunction with the protection diode, and as a reserved position for future circuit upgrades or modifications.

[0145] In this embodiment of the disclosure, the protection diode can be used to protect the connection lines of the SAR sensor from transient high-voltage spike pulses (such as electrostatic discharge or lightning surges).

[0146] For example, the protection diode may include a transient voltage suppressor diode (TVS).

[0147] In some embodiments, such as Figure 2 As shown, the antenna structure also includes:

[0148] Parasitic segment 114 has a first end and a second end;

[0149] The first end is grounded;

[0150] A gap 115 is formed between the second end and the antenna radiator 101;

[0151] The distance between the gap 115 and the upper frame point 102 is greater than the distance between the gap 115 and the feed potential 106 of the antenna structure.

[0152] The aforementioned gaps are filled with insulating material, which ensures both a smooth appearance and robustness without affecting the antenna's transmission and reception performance.

[0153] In this embodiment, the distance between the gap and the upper frame point is greater than the distance between the gap and the feed potential. That is, the feed potential is closer to the gap relative to the upper frame point. Thus, when the antenna radiator operates as an antenna radiator, the parasitic stub can better couple with the antenna radiator to work together in the mid-to-high frequency band.

[0154] In this embodiment of the disclosure, the parasitic stalk can be coupled with the antenna radiator to jointly transmit and receive mid-to-high frequency wireless signals, thereby improving the mid-to-high frequency transmission and reception performance.

[0155] To better understand the above one or more embodiments, examples of embodiments of this disclosure are as follows:

[0156] Figure 3 This is a schematic diagram of high-frequency waveforms in the antenna structure of this disclosure during transmission and reception, according to an exemplary embodiment. Figure 4 This is a schematic diagram illustrating the mid-to-high frequency band efficiency of the antenna structure of this disclosure under different states, according to an exemplary embodiment. Figure 3 and Figure 4 It can be seen that the antenna structure disclosed herein has an efficiency of >-8dB in state 20.

[0157] Figure 5 This is a schematic diagram of high-frequency waveforms in the transmission and reception of a conventional antenna structure according to an exemplary embodiment. Figure 6 This is a schematic diagram illustrating the mid-to-high frequency band efficiency of a conventional antenna structure under different states, according to an exemplary embodiment. Figure 5 and Figure 6 It can be seen that the efficiency of the existing antenna structure is at its lowest point of -10dB in state 20.

[0158] This disclosure also proposes an electronic device. Figure 7 This is a schematic diagram illustrating the structure of an electronic device according to an exemplary embodiment. For example... Figure 7 As shown, the electronic device includes:

[0159] Antenna structure 20 as described in one or more of the above embodiments;

[0160] Volume side buttons 21 are located on the side of the electronic device;

[0161] The volume button 21 is reused as the antenna radiator of the antenna structure.

[0162] In this embodiment of the disclosure, the electronic device may further include a control circuit. This control circuit is connected to a SAR sensor on the antenna structure and is used to adjust the transmit power of the antenna structure based on the signal detected by the SAR sensor.

[0163] It should be noted that SAR sensors can be used to detect capacitance, and thus adjust the transmit power of the antenna structure based on the capacitance. Different capacitance values ​​correspond to different adjustable transmit power values ​​for the antenna structure.

[0164] In this embodiment of the disclosure, the electronic device has a button hole on its side, through which the volume pressing part of the volume side button is exposed. Here, the volume pressing part can be used by the user to trigger the button function corresponding to the volume side button.

[0165] In other words, the volume button in this embodiment can also be reused as an antenna radiator in an antenna structure, enabling both levitation of the antenna radiator and transmission and reception of mid-to-high frequency bands. This not only enriches the functionality of the volume buttons but also reduces the space occupied by the antenna structure.

[0166] It should be noted that the volume control is a conductor and can be made of metal; this embodiment does not limit this.

[0167] In this embodiment of the disclosure, the volume buttons can be used to adjust the volume of the audio signal output by the electronic device, which can increase or decrease the volume.

[0168] It should be noted that the volume control side button's volume pressing portion may include a first volume pressing portion and a second volume pressing portion connected to the first volume pressing portion. When an external force is applied to the first volume pressing portion, the volume of the output audio signal decreases; when an external force is applied to the second volume pressing portion, the volume of the output audio signal increases.

[0169] Here, the feed potential of the antenna structure can be set at the first volume button; or at the connection point between the first volume button and the second volume button. At least one upper frame point of the antenna structure can be set at the second volume button.

[0170] In some embodiments, such as Figure 7 As shown, the electronic device further includes:

[0171] The power button 22 and the volume button 21 are located on the same side of the electronic device.

[0172] The power pressing part of the power side button 22 is reused as a parasitic branch of the antenna structure.

[0173] In this embodiment of the disclosure, the power side button can be used to turn the electronic device on or off.

[0174] It should be noted that the embodiments disclosed herein can use the volume button of the volume side button and the power button of the power side button as the antenna radiator and parasitic branch of the antenna structure, respectively, so as to make full use of the different functional buttons on the electronic device.

[0175] It is understood that the embodiments of this disclosure connect an antenna radiator to a SAR sensor, enabling SAR detection. Furthermore, compared to existing methods that directly reduce the transmission power to a fixed level, the embodiments of this disclosure can control the antenna structure to have different transmission powers based on the correlation between the detection results and the transmission power. This makes the adjustment of the transmission power more flexible, not only improving electromagnetic radiation safety but also enhancing antenna radiation performance, thereby solving the problem of only being able to reduce the transmission power to a fixed level when a human body is nearby.

[0176] And, as Figure 7 As shown, the electronic device also includes a frame antenna 23, which can operate in the N77 frequency band. Here, in this embodiment of the present disclosure, the antenna structure includes a second isolation component and a third isolation component, which can reduce interference to the frame antenna and thus improve its radiation performance.

[0177] Figure 8 This is a structural block diagram of an electronic device according to an exemplary embodiment. For example, the electronic device 800 may be a mobile phone, computer, digital broadcasting terminal, messaging device, game console, tablet device, medical device, fitness equipment, personal digital assistant, etc.

[0178] Reference Figure 8 The electronic device 800 may include one or more of the following components: processing component 802, memory 804, power supply component 806, multimedia component 808, audio component 810, input / output (I / O) interface 812, sensor component 814, and communication component 816.

[0179] Processing component 802 typically controls the overall operation of electronic device 800, such as operations associated with at least one of display, telephone call, data communication, camera operation, and recording operation. Processing component 802 may include one or more processors 820 to execute instructions to perform all or part of the steps of the methods described above. Furthermore, processing component 802 may include one or more modules to facilitate interaction between processing component 802 and other components. For example, processing component 802 may include a multimedia module to facilitate interaction between multimedia component 808 and processing component 802.

[0180] Memory 804 is configured to store various types of data to support operation on electronic device 800. Examples of such data include at least one of the following: instructions for any application or method operating on electronic device 800, contact data, phonebook data, messages, pictures, and videos. Memory 804 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as Static Random Access Memory (SRAM), Electrically Erasable Programmable Read Only Memory (EEPROM), Erasable Programmable Read-Only Memory (EPROM), Programmable Read Only Memory (PROM), Read-Only Memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0181] Power supply component 806 provides power to various components of electronic device 800. Power supply component 806 may include at least one of the following: a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to electronic device 800.

[0182] Multimedia component 808 includes a screen that provides an output interface between electronic device 800 and user. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a Touch Panel, the screen may be implemented as a touchscreen to receive input signals from the user. The Touch Panel includes one or more touch sensors to sense touches, swipes, and gestures on the Touch Panel. The touch sensors may sense not only the boundaries of touch or swipe actions but also the duration and pressure associated with the touch or swipe operation. In some embodiments, multimedia component 808 includes a front-facing camera and / or a rear-facing camera. When electronic device 800 is in an operating mode, such as a shooting mode or video mode, the front-facing camera and / or rear-facing camera may receive external multimedia data. Each front-facing camera and rear-facing camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

[0183] Audio component 810 is configured to output and / or input audio signals. For example, audio component 810 includes a microphone (MIC) configured to receive external audio signals when electronic device 800 is in an operating mode, such as call mode, recording mode, and voice recognition mode. The received audio signals may be further stored in memory 804 or transmitted via communication component 816. In some embodiments, audio component 810 also includes a speaker for outputting audio signals.

[0184] I / O interface 812 provides an interface between processing component 802 and peripheral interface modules, such as keyboards, click wheels, and buttons. These buttons may include, but are not limited to, home buttons, volume buttons, power buttons, and lock buttons.

[0185] Sensor assembly 814 includes one or more sensors for providing state assessments of various aspects of electronic device 800. For example, sensor assembly 814 may detect the on / off state of electronic device 800, the relative positioning of components such as the display and keypad of electronic device 800, changes in position of electronic device 800 or one of its components, the presence or absence of user contact with electronic device 800, orientation or acceleration / deceleration of electronic device 800, and temperature changes of electronic device 800. Sensor assembly 814 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. Sensor assembly 814 may also include an optical sensor, such as a complementary metal-oxide-semiconductor (CMOS) or charge-coupled device (CCD) image sensor, for use in imaging applications. In some embodiments, sensor assembly 814 may also include, but is not limited to, at least one of the following: an accelerometer, a gyroscope, a magnetometer, a pressure sensor, and a temperature sensor.

[0186] Communication component 816 is configured to facilitate wired or wireless communication between electronic device 800 and other devices. Electronic device 800 can access wireless networks based on communication standards, such as Wi-Fi, 4G, 5G, or combinations thereof. In one exemplary embodiment, communication component 816 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, communication component 816 also includes a Near Field Communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wide Band (UWB), Bluetooth (BT), and other technologies.

[0187] In an exemplary embodiment, the electronic device 800 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components.

[0188] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the claims.

[0189] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. An antenna structure, characterized in that, include: An antenna radiator is capable of generating radio frequency signals; At least one upper frame point is disposed at the end of the antenna radiator, and each of the upper frame points is grounded; A specific absorptivity SAR sensor is connected to one of the points on the upper frame; The transmit power of the antenna structure is correlated with the detection result of the SAR sensor.

2. The antenna structure according to claim 1, characterized in that, The antenna structure also includes: The first isolation component is connected to the grounding line corresponding to each of the upper frame points; The SAR sensor is connected to a connection line between one of the upper frame points and the first isolation component; Specifically, for the radio frequency signal of the antenna radiator, the first isolation component makes the grounding line a path; In response to the operating signal of the SAR sensor, the first isolation component makes the grounding line open.

3. The antenna structure according to claim 2, characterized in that, The antenna structure also includes: The second isolation component is connected in series with the first isolation component on the grounding line corresponding to each of the upper frame points, with one end connected to the first isolation component and the other end grounded. The second isolation component is used to isolate clutter and adjust the grounding position of the antenna radiator so that the antenna radiator operates in a preset wavelength mode.

4. The antenna structure according to claim 3, characterized in that, The first isolation component includes: a first capacitor component; and / or, The second isolation component includes: a second capacitor component and a first inductor component arranged in parallel; The capacitance of the first capacitor component is greater than that of the second capacitor component.

5. The antenna structure according to any one of claims 1 to 4, characterized in that, The antenna structure also includes: Feed potential, set on the antenna radiator, is used to excite the antenna radiator to operate in the mid-to-high frequency band; At least one of the top frame points includes: a first top frame point, a second top frame point, and a third top frame point; The first upper frame point, the second upper frame point, and the third upper frame point are located on the same side of the feed potential; The second upper frame point is located between the first upper frame point and the third upper frame point; The SAR sensor is connected to the second upper frame point.

6. The antenna structure according to claim 5, characterized in that, The antenna radiator has a first upper frame position and a second upper frame position; the distance between the second upper frame position and the feed potential is less than the distance between the first upper frame position and the feed potential; The first upper frame point is set at the first upper frame position; The second upper frame point and the third upper frame point are set at the second upper frame position.

7. The antenna structure according to claim 5, characterized in that, The antenna structure also includes: The feed terminal is connected to the feed potential; A tuning circuit is connected to the connection line between the feed terminal and the feed potential, and includes a switching assembly for tuning the operating frequency band of the antenna radiator when the switching assembly is in different switching states. The third isolation component is connected at one end to the node of the connection line between the tuning circuit and the feed potential, and at the other end to ground.

8. The antenna structure according to claim 7, characterized in that, The third isolation component includes: a second inductor component and a third capacitor component; The third capacitor assembly and the second inductor assembly are connected in series on the connection line between the node and ground.

9. The antenna structure according to any one of claims 1 to 4, characterized in that, The antenna structure also includes: The third inductor assembly is connected in series in the connection line between the upper frame point and the SAR sensor; A protection diode is provided, with one end connected to the connection line between the third inductor assembly and the SAR sensor, and the other end grounded.

10. The antenna structure according to any one of claims 1 to 4, characterized in that, The antenna structure also includes: The parasitic branch has a first end and a second end; The first end is grounded; The second end has a gap with the antenna radiator; The distance between the gap and the upper frame point is greater than the distance between the gap and the feed potential of the antenna structure.

11. An electronic device, characterized in that, include: The antenna structure as described in any one of claims 1 to 10; The volume buttons are located on the side of the electronic device; The volume button's volume pressing portion is reused as the antenna radiator of the antenna structure.

12. The electronic device according to claim 11, characterized in that, The electronic device also includes: The power button and the volume button are located on the same side of the electronic device; The power button's power pressing part is reused as a parasitic branch of the antenna structure.

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