Antenna system and electronic equipment

Abstract

The invention provides an antenna system and electronic equipment, the antenna system comprises a floor, a radiator, a feed unit and a grounding unit, the radiator is of a rectangular structure, the radiator and the floor are arranged at an interval, the feed unit comprises a first feed point, a second feed point and a third feed point which are arranged on the radiator, and the first feed point, the second feed point and the third feed point are connected with a radio frequency circuit through a first change-over switch; and a plurality of grounding points included in the grounding unit are arranged between the first feed point and the third feed point and are connected with the floor through an on-off switch. In the embodiment of the invention, omnidirectional radiation is realized by using the patch antenna, and compared with unidirectional radiation of a traditional frame antenna, the signal receiving and transmitting capability is improved, and the antenna efficiency is improved. And moreover, multi-direction directional radiation is realized through multi-feed-point switching, and the orientation of the transmitting terminal equipment can be matched by switching the radiation mode, so that the natural performance is further improved, and the user experience is improved.

Description

Technical Field

[0001] This disclosure relates to the field of wireless communication technology, specifically to an antenna system and electronic device. Background Technology

[0002] Currently, mobile phone antennas are mainly frame antennas, meaning that the metal frame of the phone is used as the radiator in the antenna design. As mobile phones integrate more and more frequency bands, the design environment for frame antennas is becoming increasingly competitive. More importantly, the radiation pattern of frame antennas is relatively simple, resulting in poor antenna efficiency and affecting the user experience. Summary of the Invention

[0003] To improve antenna radiation efficiency and stability, this disclosure provides an antenna system and its control method and electronic equipment.

[0004] In a first aspect, embodiments of this disclosure provide an antenna system, including:

[0005] floor;

[0006] A radiator is provided at a distance from the floor. The radiator has a rectangular structure, and the rectangular structure includes a first side and a second side that intersect at right angles.

[0007] The power supply unit includes a first feed point, a second feed point, and a third feed point disposed on the radiator and arranged in a direction parallel to the first side. The first feed point, the second feed point, and the third feed point are connected to the radio frequency circuit through a first switching switch. The radio frequency circuit excites the radiator to generate a first resonance through any one of the first feed point, the second feed point, and the third feed point.

[0008] The grounding unit includes a plurality of grounding points disposed on the radiator, and the plurality of grounding points are located between the first feed point and the third feed point in a direction parallel to the first side, and each grounding point is connected to the floor via an on / off switch.

[0009] In some embodiments, the grounding unit includes a first grounding point, a second grounding point, a third grounding point, and a fourth grounding point. The first grounding point, the second grounding point, the third grounding point, and the fourth grounding point are distributed in a rectangular array on the radiator, and each grounding point is located at a point where the first side and the second side are divided into three equal parts.

[0010] In some implementations, the first feed point, the second feed point, and the third feed point are located on the perpendicular bisector of the second side, and the ratio of a first distance between the first feed point and the second feed point to a second distance between the first feed point and the third feed point is one-third.

[0011] In some implementations, the first resonance includes the WiFi 2.4G band;

[0012] The distance between the floor and the radiator is 1mm to 5mm;

[0013] The length of the first side is 25mm to 35mm, and the length of the second side is 12mm to 20mm.

[0014] Secondly, this disclosure provides a control method for an antenna system, the antenna system including the antenna system described in any of the above embodiments, the method comprising:

[0015] Receive a first signal from the transmitting device that matches the frequency band of the first resonance;

[0016] The relative positions of the transmitting device and the electronic device carrying the antenna system are determined based on the first signal;

[0017] The target feed point is determined from the first feed point, the second feed point, and the third feed point based on the relative orientation;

[0018] The first switching switch is controlled to connect the radio frequency circuit to the target feed point, and the radio frequency circuit is controlled to excite the radiator to generate the first resonance.

[0019] In some implementations, determining the target feed point from the first feed point, the second feed point, and the third feed point based on the relative orientation includes:

[0020] The radiation mode of the antenna system is determined based on the relative orientation.

[0021] The feed point corresponding to the radiation mode is determined as the target feed point.

[0022] In some embodiments, controlling the first switching switch to connect the radio frequency circuit to the target feed point and controlling the radio frequency circuit to excite the radiator to generate the first resonance includes any of the following:

[0023] When the target feed point is the first feed point, the first switching switch is controlled to connect the radio frequency circuit to the first feed point, and the on / off switches of the plurality of grounding points are controlled to connect, thereby controlling the radio frequency circuit to excite the radiator to generate the first resonance.

[0024] When the target feed point is the second feed point, the first switching switch is controlled to connect the radio frequency circuit to the second feed point, and the on / off switches of the plurality of grounding points are controlled to disconnect, and the radio frequency circuit is controlled to excite the radiator to generate the first resonance.

[0025] When the target feed point is the third feed point, the first switching switch is controlled to connect the radio frequency circuit to the third feed point, and the on / off switches of the plurality of grounding points are controlled to connect, thereby controlling the radio frequency circuit to excite the radiator to generate the first resonance.

[0026] Thirdly, this disclosure provides an electronic device including the antenna system described in any of the above embodiments.

[0027] In some embodiments, the ground plane of the antenna system is formed from a metal layer of the circuit board of the electronic device.

[0028] In some embodiments, the electronic device of this disclosure further includes:

[0029] processor;

[0030] A memory storing computer instructions for causing a processor to execute the method described in any of the above embodiments.

[0031] The antenna system of this disclosure includes a ground plane, a radiator, a feed unit, and a grounding unit. The radiator has a rectangular structure and is spaced apart from the ground plane. The feed unit includes a first feed point, a second feed point, and a third feed point located on the radiator, and these three are connected to a radio frequency circuit via a first switching switch. The grounding unit includes multiple grounding points located between the first and third feed points and connected to the ground plane via an on / off switch. In this disclosure, a patch antenna is used to achieve omnidirectional radiation, which improves signal transmission and reception capabilities and antenna efficiency compared to the unidirectional radiation of traditional frame antennas. Furthermore, multi-directional directional radiation is achieved through multi-feed point switching, and the radiation mode can be switched to match the orientation of the transmitting device, further improving antenna performance and enhancing user experience. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the specific embodiments of this disclosure or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0033] Figure 1 It is the radiation pattern of the frame antenna in the related technology.

[0034] Figure 2 This is a cross-sectional structural diagram of the antenna system in some embodiments of this disclosure.

[0035] Figure 3 This is a top view of an antenna system in some embodiments of this disclosure.

[0036] Figure 4 This is a schematic diagram of an antenna system in some embodiments of this disclosure.

[0037] Figure 5 This is a structural block diagram of the antenna system in some embodiments of this disclosure.

[0038] Figure 6 This is a radiation pattern of the antenna system in omnidirectional radiation mode in some embodiments of this disclosure.

[0039] Figure 7 This is a schematic diagram of the electric field of the antenna system in omnidirectional radiation mode in some embodiments of this disclosure.

[0040] Figure 8 This is a radiation pattern of the antenna system in the left-side radiation mode in some embodiments of this disclosure.

[0041] Figure 9 This is a schematic diagram of the electric field of the antenna system in the left-side radiation mode in some embodiments of this disclosure.

[0042] Figure 10 This is a radiation pattern of the antenna system in the right-side radiation mode in some embodiments of this disclosure.

[0043] Figure 11 This is a schematic diagram of the electric field of the antenna system in the right-side radiation mode in some embodiments of this disclosure.

[0044] Figure 12 This is a flowchart of a control method for an antenna system in some embodiments of this disclosure.

[0045] Figure 13 These are performance curves of the antenna system in some embodiments of this disclosure.

[0046] Figure 14 These are performance curves of the antenna system in some embodiments of this disclosure.

[0047] Figure 15 These are performance curves of the antenna system in some embodiments of this disclosure. Detailed Implementation

[0048] The technical solutions of this disclosure will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this disclosure, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without inventive effort are within the scope of protection of this disclosure. Furthermore, the technical features involved in the different embodiments of this disclosure described below can be combined with each other as long as they do not conflict with each other.

[0049] Currently, mobile phone antennas are primarily frame antennas, which are designed by creating slits in the metal frame of the phone and using the frame as a radiator. However, with the development of wireless communication technology, mobile phones need to support an increasing number of communication frequency bands. Especially for higher-end flagship phones, they need to cover almost all antenna frequency bands, including 2G, 3G, 4G, 5G, Bluetooth, WiFi, and satellite positioning. As a result, the number of antennas is increasing, making the design environment for frame antennas more challenging and posing a significant challenge to antenna design.

[0050] Additionally, taking WiFi antennas as an example, see the example of designing WiFi antennas using the phone's frame. Figure 1 As shown, the radiation pattern of the WiFi signal is mainly perpendicular to the frame surface. Even if the feed position is changed, the radiation direction cannot be changed. Therefore, the radiation direction of the antenna is relatively uniform, resulting in many signal reception blind spots.

[0051] In related technologies, auxiliary antennas are typically installed inside the phone, such as LDS (Laser-Direct-Structured) or FPC (Flexible Printed Circuit) antennas, to compensate for the insufficient radiation direction of the bezel antennas by increasing the number of antennas. However, this approach undoubtedly increases the number of antennas, making the already limited design space even more constrained, and also increases equipment costs.

[0052] Based on this, the present disclosure provides an antenna system and its control method and electronic device, which aim to achieve omnidirectional radiation of antenna signals. Moreover, the antenna system provides multiple radiation modes, and the radiation direction can be adjusted by switching the radiation mode to improve the antenna radiation efficiency and stability.

[0053] It is worth noting that the antenna system of this disclosure adopts an antenna form similar to a patch antenna, meaning that the antenna radiator does not require the use of the metal frame of the electronic device. Therefore, the antenna system can be designed inside the electronic device or in a location other than the frame. Of course, if device space permits, the antenna radiator can also be implemented using a metal frame; this disclosure does not impose any limitations on this.

[0054] Figure 2 Cross-sectional views of the antenna system in some embodiments of this disclosure are shown. Figure 3 A top view of an antenna system in some embodiments of this disclosure is shown below, in conjunction with... Figure 2 and Figure 3 Please provide an explanation.

[0055] See Figure 2As shown, the antenna system includes two spaced-apart metal plates: a ground plate 9 serving as a reflector, and a radiator 8 serving as a radiator. (See also...) Figure 3 As shown, the size of the radiator 8 is smaller than that of the floor 9, meaning that the projection of the floor 9 onto the plane where the radiator 8 is located can completely cover the radiator 8.

[0056] For antenna systems, ground 9 is the ground (GND) with a constant potential of zero. In electronic devices, ground 9 can generally be a metal layer in the circuit board of the electronic device, or it can be a metal layer in the frame of the electronic device.

[0057] For patch antennas, the radiator 8 is generally a regular-shaped metal sheet, such as a rectangular metal sheet. The length and width of the rectangle need to be selected according to the resonant frequency of the antenna. The general principle is that the higher the resonant frequency of the antenna, the smaller the size of the radiator 8, and the lower the resonant frequency of the antenna, the larger the size of the radiator 8.

[0058] Radiator 8 is located on one side of floor 9, which is the signal radiating side of the antenna system, for example... Figure 2 In the indicated orientation, since floor 9 is a reflector, the radiation of the antenna system is mainly concentrated above floor 9. Based on this, the orientation of the antenna system in the electronic device can be set according to the antenna radiation direction requirements.

[0059] The radiator 8 and the floor 9 are positioned parallel to each other and spaced apart. The spacing between them can be selected according to the requirements of the scenario. Furthermore, a dielectric layer can be filled between them or left unfilled (in the case of no dielectric layer, air is used as the dielectric). The dielectric layer affects the resonant frequency of the antenna system. The resonant frequency f of the patch antenna satisfies the following formula:

[0060]

[0061] In the above formula, c represents the speed of light, and ε represents the relative permittivity of the dielectric layer. Based on the above formula and combined with the principle of patch antennas, the antenna design for the required frequency band can be realized, which will not be elaborated further in this disclosure.

[0062] It is worth noting that patch antennas have a variety of different transverse magnetic modes (TM modes). Different TM modes correspond to different equivalent magnetic current distributions. When designing an antenna, the radiation pattern and polarization can be determined based on the equivalent magnetic current distribution diagram. The TM mode can be understood as the radiation generated by the patch antenna having an electric field component but no magnetic field component in the propagation direction.

[0063] For example Figure 4Images (a) through (c) show schematic diagrams of the magnetic flux distribution of the radiator of the patch antenna under different TM modes. Figure 4 In the diagram, dashed arrows indicate the direction of the equivalent magnetic current, and hollow circles represent zero points. For different TM modes, the distribution of the equivalent magnetic current follows the following patterns:

[0064] 1) In TMmn mode, the equivalent magnetic current has m zeros along the x-axis and n zeros along the y-axis. A zero is a point where the equivalent magnetic current is reversed on both sides of a sinusoidal distribution.

[0065] 2) The distance between adjacent zeros along the same direction is λ / 2. When there is only one zero in this direction, the length of the radiator in this direction is λ / 2, where λ is the wavelength of the antenna signal.

[0066] For example Figure 4 As shown in Figure (a), this is a schematic diagram of the equivalent magnetic current distribution of the antenna in TM01 mode. The patch antenna has a null point in the y-axis direction; therefore, the electric length of the radiator in the y-axis direction is λ / 2. For example... Figure 4 As shown in Figure (b), this is a schematic diagram of the equivalent magnetic current distribution of the antenna in TM11 mode. The patch antenna has a null point in both the x-axis and y-axis directions. Therefore, the electric length of the radiator in both the x-axis and y-axis directions is λ / 2. For example... Figure 4 As shown in (c), this is a schematic diagram of the equivalent magnetic flux distribution of the antenna in TM12 mode. The patch antenna has one zero on the x-axis and two zeros on the y-axis. Therefore, the electric length of the radiator in the x-axis direction is λ / 2 and the electric length in the y-axis direction is λ.

[0067] Through the above Figure 4 For example, the principle of different TM modes of patch antenna can be understood. Based on this, the antenna system of the present disclosure embodiment will be described below.

[0068] See Figure 3 As shown, in the antenna system of this disclosure example, the radiator 8 is a rectangular structure, the side of the radiator parallel to the x-axis is defined as the first side L, and the side of the radiator parallel to the y-axis is defined as the second side W.

[0069] In this embodiment of the disclosure, the antenna system includes a feeding unit and a grounding unit. The feeding unit includes a plurality of feed points disposed on the radiator 8, and the grounding unit includes a plurality of grounding points disposed on the radiator 8.

[0070] As we can understand, for an antenna system, the radiator is fed by a radio frequency circuit, thereby exciting the radiator to generate a radiated signal and realize the antenna function. Simultaneously, by grounding the radiator, the radiator current can return to ground, forming a current loop. The feeding position on the radiator is called the feed point, and the grounding position on the radiator is called the ground point. Changing the positions of the feed point and ground point of the radiator will affect the antenna's resonant mode or resonant frequency.

[0071] Continue to refer to Figure 3 As shown, the feed points on the radiator 8 are represented by black triangles, and the grounding points are represented by black circles. That is, in this example, the power supply unit includes three feed points, namely the first feed point 11, the second feed point 12, and the third feed point 13, and the grounding unit includes four grounding points, namely the first grounding point 21, the second grounding point 22, the third grounding point 23, and the fourth grounding point 24.

[0072] The first feed point 11, the second feed point 12, and the third feed point 13 are set parallel to the first side L, that is, the first feed point 11, the second feed point 12, and the third feed point 13 are collinear, and the virtual line on which the three are located is parallel to the first side L.

[0073] Figure 5 It shows Figure 4 For a block diagram of the antenna system, see [link / reference]. Figure 5 As shown, in this embodiment of the disclosure, the first feed point 11, the second feed point 12 and the third feed point 13 are connected to the radio frequency circuit through the first switching switch 31.

[0074] Radio frequency (RF) circuits refer to the RF excitation source of an antenna system. RF circuits may include RF chips, or they may include RF chips and other matching circuits and related circuits; this disclosure does not impose any limitations on this. Furthermore, it is understood that different resonant frequencies of antenna systems may correspond to different RF circuits, and those skilled in the art can design them according to specific scenario requirements; this disclosure will not elaborate further.

[0075] The function of the first switching switch 31 is to switch the RF circuit between the first feed point 11, the second feed point 12 and the third feed point 13, thereby changing the different feed positions of the antenna system, and then, in conjunction with the grounding unit, enabling the antenna system to switch between different modes. This process will be described in the following disclosure.

[0076] In some implementations, the first switching switch 31 may be a diode switch, such as a PIN diode switch; it may also be a MOS (Metal-Oxide-Semiconductor Field-Effect Transistor) switch; or it may be a single-pole n-throw (SPnT) switch; in short, the first switching switch 31 may be implemented using any type of switching switch suitable for implementation, and this disclosure does not limit it.

[0077] Continue to refer to Figure 3 In some embodiments, to ensure the symmetry of the radiation pattern, the first feed point 11, the second feed point 12, and the third feed point 13 are located on the perpendicular bisector a of the second side L. That is, the first feed point 11, the second feed point 12, and the third feed point 13 are collinear on the perpendicular bisector a of the second side L. It can be understood that for a rectangular radiator, the axis a is the axis of symmetry of the rectangle. Therefore, by setting the feed points on this axis a, the antenna radiation direction will be symmetrical about the axis a, thereby ensuring the radiation direction.

[0078] Continue to refer to Figure 3 In some implementations, the straight-line distance between the first feed point 11 and the second feed point 12 is defined as the first distance, and the straight-line distance between the first feed point 11 and the third feed point 13 is defined as the second distance. The ratio between the first distance and the second distance is approximately one-third.

[0079] In this embodiment of the present disclosure, the grounding unit is disposed between the first feed point 11 and the third feed point 13 along the direction of the first side L. The purpose of this is that when switching between the operation of the first feed point 11 and the third feed point 13, the grounding effect of the grounding unit can cause the radiator to generate a resonance biased to one side, thereby achieving directional radiation, that is, improving the radiation performance of the antenna system towards a certain side. The following embodiments of the present disclosure will explain this principle.

[0080] See Figure 3 As shown, in this example, the grounding unit includes a first grounding point 21, a second grounding point 22, a third grounding point 23, and a fourth grounding point 24, which are distributed in a rectangular array on the radiator 8, and each grounding point is located at the trisection point of the first side L and the second side W.

[0081] Specifically, Figure 3 In the example, axes b and c represent the axes that trisect the second side W, so any point on axes b and c is a trisection point in the y-direction. Similarly, axes d and e represent the axes that trisect the first side L, so any point on axes d and e is a trisection point in the x-direction.

[0082] In this example, the first grounding point 21 is located at the intersection of axis b and axis e, thus the first grounding point 21 is located at the trisection point of both the first side L and the second side W. The second grounding point 22 is located at the intersection of axis b and axis d, the third grounding point 23 is located at the intersection of axis c and axis d, and the fourth grounding point 24 is located at the intersection of axis c and axis e. These grounding points are all located at the trisection points of both the first side L and the second side W.

[0083] It is understood that parameters such as proportions, positions, and values ​​in this disclosure may be affected by processing errors or design errors. As long as the actual implementation is within the range of 90% to 110% of the error specified in this disclosure, it should be considered as meeting the scope specified in this disclosure.

[0084] See Figure 5 As shown in this embodiment, each grounding point is connected to the floor 9 via an on / off switch 32. The function of the on / off switch 32 is to control the connection between the grounding point and the floor 9. When the on / off switch between a grounding point and the floor 9 is open, the connection between the grounding point and the floor 9 is equivalent to an open circuit, indicating that the radiator is not grounded at that grounding point. Conversely, when the on / off switch between a grounding point and the floor 9 is closed, the connection between the grounding point and the floor 9 is equivalent to a short circuit, indicating that the radiator is grounded at that grounding point.

[0085] In some embodiments, the on / off switch 32 may be a diode switch, such as a PIN diode switch; it may also be a MOS (Metal-Oxide-Semiconductor Field-Effect Transistor) switch; or it may be a single-pole single-throw (SPST) switch; in short, the on / off switch 32 may be implemented using any switch type suitable for implementation, and this disclosure does not limit it.

[0086] In some embodiments, the antenna system of this disclosure is exemplified by a WiFi antenna in a mobile phone. The first resonant frequency band generated by the antenna system includes the WiFi 2.4G band, with a frequency range of 2.4GHz to 2.48.5GHz. In this example, the length of the first side L of the radiator 8 can be 25mm to 35mm, and the length of the second side W can be 12mm to 20mm. In one example, the dimensions L*W of the radiator 8 are 32mm*26mm. In some embodiments, the distance between the radiator 8 and the floor 9 is 1mm to 5mm. For example, in one example, the distance between the radiator 8 and the floor 9 is 3mm.

[0087] Of course, those skilled in the art will understand that the above dimensions and values ​​are examples of antenna systems used as WiFi 2.4G antennas in mobile phones. For other types of antennas, those skilled in the art can select appropriate dimensions and values ​​according to the embodiments of this disclosure. The above examples do not limit the solutions of this disclosure.

[0088] The structure of the antenna system according to the present disclosure has been described above. Based on the antenna structure described above, the working principle of the antenna system according to the present disclosure will be explained below.

[0089] This disclosure Figure 3 In the example antenna structure, by switching between the first feed point 11, the second feed point 12, and the third feed point 13, three different antenna radiation modes can be provided, which will be explained below.

[0090] 1) Omnidirectional radiation mode

[0091] In this radiation mode, the first switching switch 31 controls the second feed point 12 to be connected to the radio frequency circuit, while the first feed point 11 and the third feed point 13 are disconnected from the radio frequency circuit. At the same time, the on / off switches 32 controlling the first ground point 21 to the fourth ground point 24 are all disconnected.

[0092] In this case, the radio frequency circuit excites the radiator 8 to generate the first resonance through the second feed point 12. At this time, the antenna system operates in TM11 mode, and the antenna is equivalent to a dipole antenna. The radiation pattern shows omnidirectional radiation from the middle to the outside.

[0093] Figure 6 The radiation pattern in omnidirectional radiation mode is shown. Figure 7 A schematic diagram of the electric field of the antenna system in omnidirectional radiation mode is shown. Figure 6 and Figure 7 As can be seen, in this radiation mode, the antenna can achieve 360-degree omnidirectional radiation, which greatly improves the signal transmission and reception capability and antenna efficiency compared to the unidirectional radiation of traditional frame antennas.

[0094] 2) Left-side radiation mode

[0095] In this radiation mode, the first feed point 11 is connected to the radio frequency circuit via the first switching switch 31, while the second feed point 12 and the third feed point 13 are disconnected from the radio frequency circuit. At the same time, the on / off switches 32 controlling ground point 21 to the fourth ground point 24 are all turned on.

[0096] In this case, the radio frequency circuit excites the radiator 8 to generate the first resonance through the first feed point 11. At this time, the antenna system operates in TM12 mode, and the radiation direction shows left-side directional radiation.

[0097] Figure 8 The radiation pattern in the left radiation mode is shown. Figure 9 The diagram shows the electric field of the antenna system in the left-hand radiation mode. Figure 8 and Figure 9 As can be seen, in this radiation mode, due to the grounding effect of the first grounding point 21 to the fourth grounding point 24, the electric field on the right side cancels out the electric field in the middle. At this time, the electric field on the left side takes effect, presenting a left-side directional radiation mode.

[0098] 3) Right-side radiation mode

[0099] In this radiation mode, the third feed point 13 is connected to the radio frequency circuit via the first switching switch 31, while the first feed point 11 and the second feed point 12 are disconnected from the radio frequency circuit. At the same time, the on / off switches 32 controlling ground point 21 to the fourth ground point 24 are all turned on.

[0100] In this case, the radio frequency circuit excites the radiator 8 to generate the first resonance through the third feed point 13. At this time, the antenna system operates in TM12 mode, and the radiation direction shows right-side directional radiation.

[0101] Figure 10 The radiation pattern under the radiation mode on the right is shown. Figure 11 The diagram shows the electric field of the antenna system in the radiation mode on the right. Figure 10 and Figure 11 As can be seen, in this radiation mode, due to the grounding effect of the first grounding point 21 to the fourth grounding point 24, the electric field on the left side cancels out the electric field in the middle. At this time, the electric field on the right side takes effect, presenting a right-side directional radiation mode.

[0102] As described above, the antenna system of this disclosure can change the radiation pattern of the antenna by switching different radiation modes. Taking a mobile phone WiFi antenna as an example, the user's position may change during the use of the mobile phone, thus changing the position of the mobile phone relative to the wireless router. In this disclosure, the radiation direction of the WiFi antenna can be switched by detecting the relative position between the mobile phone and the router, thereby ensuring better signal transmission and reception efficiency. The control method of this disclosure embodiment will be described below using this scenario as an example.

[0103] like Figure 12 As shown, in some embodiments, the control method of the antenna system exemplified in this disclosure includes:

[0104] S110: Receive the first signal emitted by the transmitting device that matches the first resonant frequency band.

[0105] In this embodiment of the disclosure, the antenna system is applied in an electronic device. Depending on the frequency band of the first resonance generated by the antenna system, the antenna system can be used as any type of antenna in the electronic device, such as a satellite positioning antenna, a WiFi antenna, a Bluetooth antenna, etc. This disclosure does not impose any restrictions on this.

[0106] In some implementations, the antenna system takes a mobile phone WiFi antenna as an example. When a user uses a mobile phone, the phone's WiFi antenna can receive WiFi signals sent by a wireless router, and at the same time, it can also send WiFi signals to the wireless router to achieve wireless communication.

[0107] In this example, the transmitting device can be a wireless router or other WiFi signal transmitting device. The mobile phone can receive the WiFi signal emitted by the transmitting device through its antenna system. This WiFi signal is the first signal described in this disclosure, and the mobile phone can obtain the corresponding signal data through amplification and demodulation via relevant circuitry; details of this will not be elaborated further in this disclosure.

[0108] S120. Determine the relative positions of the transmitting device and the electronic equipment carrying the antenna system based on the first signal.

[0109] In this example, the electronic device carrying the antenna system is a mobile phone. After receiving the first signal sent by the transmitting device, the mobile phone can use ranging and positioning technology to determine the relative position between the mobile phone and the transmitting device based on the first signal.

[0110] For WiFi 2.4GHz ranging and positioning algorithms, those skilled in the art can understand and fully implement them by referring to relevant technologies, such as RSSI (Received Signal Strength Indication) algorithm, etc., and this disclosure will not elaborate on them further.

[0111] S130. Determine the target feed point from the first feed point, the second feed point, and the third feed point based on the relative orientation.

[0112] In this example, after determining the relative orientation of the mobile phone and the transmitting device, the required feed point can be determined as the target feed point based on the relative orientation.

[0113] As can be seen from the foregoing embodiments, the antenna system disclosed herein includes three radiation modes. First, the radiation mode of the antenna system can be determined based on the relative orientation. For example, when the router is located directly in front of the mobile phone, the radiation mode can be determined to be omnidirectional radiation mode; another example is when the router is located to the left of the mobile phone, the radiation mode can be determined to be left-side radiation mode; yet another example is when the router is located to the right of the mobile phone, the radiation mode can be determined to be right-side radiation mode.

[0114] Then, after determining the radiation mode, the corresponding feed point can be determined as the target feed point based on the radiation mode. For example, when the radiation mode is omnidirectional radiation mode, the second feed point 12 can be determined as the target feed point; as another example, when the radiation mode is left-side radiation mode, the first feed point 11 can be determined as the target feed point; and as yet another example, when the radiation mode is right-side radiation mode, the third feed point 13 can be determined as the target feed point.

[0115] S140: Control the first switching switch to connect the radio frequency circuit and the target feed point, and control the radio frequency circuit to excite the radiator to generate the first resonance.

[0116] As can be seen from the foregoing, different feed points correspond to different radiation modes, thus requiring the control of the first switching switch and the on / off switch to achieve the corresponding radiation modes.

[0117] For example, in some implementations, when the target feed point is the first feed point, the first feed point 11 is connected to the radio frequency circuit via the first switching switch 31, while the second feed point 12 and the third feed point 13 are disconnected from the radio frequency circuit. Simultaneously, the on / off switches 32 controlling ground points 21 to 24 are all connected. In this case, the radio frequency circuit excites the radiator 8 to generate a first resonance through the first feed point 11. At this time, the antenna system operates in TM12 mode, and the radiation direction exhibits left-side directional radiation.

[0118] For example, in some other embodiments, when the target feed point is the second feed point, the second feed point 12 is connected to the RF circuit via the first switching switch 31, while the first feed point 11 and the third feed point 13 are disconnected from the RF circuit. Simultaneously, the on / off switches 32 controlling the first ground point 21 to the fourth ground point 24 are all disconnected. In this case, the RF circuit excites the radiator 8 to generate a first resonance through the second feed point 12. At this time, the antenna system operates in TM11 mode, the antenna is equivalent to a dipole antenna, and the radiation pattern exhibits omnidirectional radiation from the center outwards.

[0119] For example, in some embodiments, when the target feed point is the third feed point, the third feed point 13 is connected to the RF circuit via the first switching switch 31, while the first feed point 11 and the second feed point 12 are disconnected from the RF circuit. Simultaneously, the on / off switches 32 controlling grounding point 21 to the fourth grounding point 24 are all connected. In this case, the RF circuit excites the radiator 8 to generate a first resonance through the third feed point 13. At this time, the antenna system operates in TM12 mode, and the radiation direction exhibits right-side directional radiation.

[0120] As described above, the embodiments of this disclosure utilize patch antennas to achieve omnidirectional radiation, which improves signal transmission and reception capabilities and antenna efficiency compared to the unidirectional radiation of traditional frame antennas. Furthermore, multi-feed point switching enables multi-directional directional radiation, and the radiation mode can be switched to match the orientation of the transmitting device, further enhancing antenna performance and improving user experience.

[0121] In some embodiments, the antenna system disclosed herein uses a mobile phone WiFi 2.4G antenna as an example. Figure 13 The simulated S-parameter curves of the antenna system disclosed herein are shown. Figure 14 and Figure 15 A simulated radiation efficiency curve of the antenna system of this disclosure is shown. (By...) Figure 13 As can be seen, the antenna system can consistently operate in the WiFi 2.4GHz band, and through... Figures 13 to 15 As can be seen, the antenna radiation efficiency remains above -4dB, which fully meets the antenna design requirements.

[0122] In some embodiments, this disclosure provides an electronic device, which can be any type of device suitable for implementation, such as a smartphone, tablet computer, wearable device, etc., and this disclosure does not limit it.

[0123] In some embodiments, the electronic device of this disclosure includes the antenna system of any of the foregoing embodiments. For example, in one example, the ground plane 9 of the antenna system can be implemented using a metal layer in the circuit board of the electronic device. In another example, the ground plane 9 of the antenna system can be implemented using a metal layer in the middle frame of the electronic device. The radiator 8 of the antenna system can be formed by LDS, FPC processes, or the radiator 8 can also be implemented by structures such as metal sheets, metal layers, and metal frames; this disclosure does not limit this.

[0124] In some embodiments, the electronic device of this disclosure further includes a memory and a processor, the memory storing computer instructions for causing the processor to execute the control methods of any of the above embodiments.

[0125] Obviously, the above embodiments are merely examples for clear illustration and are not intended to limit the embodiments. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all embodiments here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this disclosure.

Claims

1. An antenna system, characterized in that, include: floor; A radiator is provided at a distance from the floor. The radiator has a rectangular structure, and the rectangular structure includes a first side and a second side that intersect at right angles. The power supply unit includes a first feed point, a second feed point, and a third feed point disposed on the radiator and arranged in a direction parallel to the first side. The first feed point, the second feed point, and the third feed point are connected to the radio frequency circuit through a first switching switch. The radio frequency circuit excites the radiator to generate a first resonance through any one of the first feed point, the second feed point, and the third feed point. The grounding unit includes a plurality of grounding points disposed on the radiator, and the plurality of grounding points are located between the first feed point and the third feed point in a direction parallel to the first side, and each grounding point is connected to the floor via an on / off switch.

2. The antenna system according to claim 1, characterized in that, The grounding unit includes a first grounding point, a second grounding point, a third grounding point, and a fourth grounding point. The first grounding point, the second grounding point, the third grounding point, and the fourth grounding point are distributed in a rectangular array on the radiator, and each grounding point is located at the trisection point of the first side and the second side.

3. The antenna system according to claim 1, characterized in that, The first feed point, the second feed point, and the third feed point are located on the perpendicular bisector of the second side, and the ratio of the first distance between the first feed point and the second feed point to the second distance between the first feed point and the third feed point is one-third.

4. The antenna system according to claim 1, characterized in that, The first resonance includes the WiFi 2.4G frequency band; The distance between the floor and the radiator is 1mm to 5mm; The length of the first side is 25mm to 35mm, and the length of the second side is 12mm to 20mm.

5. A control method for an antenna system, characterized in that, The antenna system includes the antenna system according to any one of claims 1 to 4, and the method includes: Receive a first signal from the transmitting device that matches the frequency band of the first resonance; The relative positions of the transmitting device and the electronic device carrying the antenna system are determined based on the first signal; The target feed point is determined from the first feed point, the second feed point, and the third feed point based on the relative orientation; The first switching switch is controlled to connect the radio frequency circuit to the target feed point, and the radio frequency circuit is controlled to excite the radiator to generate the first resonance.

6. The method according to claim 5, characterized in that, Determining the target feed point from the first feed point, the second feed point, and the third feed point based on the relative orientation includes: The radiation mode of the antenna system is determined based on the relative orientation. The feed point corresponding to the radiation mode is determined as the target feed point.

7. The method according to claim 5, characterized in that, The control of the first switching switch to connect the radio frequency circuit and the target feed point, and the control of the radio frequency circuit to excite the radiator to generate the first resonance, includes any of the following: When the target feed point is the first feed point, the first switching switch is controlled to connect the radio frequency circuit to the first feed point, and the on / off switches of the plurality of grounding points are controlled to connect, thereby controlling the radio frequency circuit to excite the radiator to generate the first resonance. When the target feed point is the second feed point, the first switching switch is controlled to connect the radio frequency circuit to the second feed point, and the on / off switches of the plurality of grounding points are controlled to disconnect, and the radio frequency circuit is controlled to excite the radiator to generate the first resonance. When the target feed point is the third feed point, the first switching switch is controlled to connect the radio frequency circuit to the third feed point, and the on / off switches of the plurality of grounding points are controlled to connect, thereby controlling the radio frequency circuit to excite the radiator to generate the first resonance.

8. An electronic device, characterized in that, Including the antenna system according to any one of claims 1 to 4.

9. The electronic device according to claim 8, characterized in that, The ground plane of the antenna system is formed by a metal layer of the circuit board of the electronic device.

10. The electronic device according to claim 8, characterized in that, Also includes: processor; A memory storing computer instructions for causing a processor to perform the method according to any one of claims 5 to 7.

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