Terminal antenna, antenna system and electronic equipment

Abstract

The embodiment of the invention discloses a terminal antenna, an antenna system and electronic equipment, relates to the technical field of antennas, and can avoid the influence of a metal Deco on antenna radiation by reasonably designing the metal Deco near the antenna. According to the specific scheme, a first radiating body and a second radiating body are included, a first feeding point and a first grounding point are arranged at the two ends of the first radiating body respectively, and at least one grounding point is arranged on the second radiating body. The first feeding point is coupled with the first feed source, and the first grounding point and at least one grounding point on the second radiator are respectively coupled with the reference ground. When the antenna works, a first current is distributed on the first radiator. A second current is distributed in the first region on the second radiator. The first area is arranged on one side, close to the first radiator, of the second radiator, and the first area corresponds to an area, projected to the second radiator, of the first radiator. The first current and the second current are in the same direction.

Description

Terminal antenna, antenna system and electronic equipment

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office on February 15, 2023, with application number 202310162877.X and invention name “A terminal antenna, antenna system and electronic device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The embodiments of the present application relate to the field of antenna technology, and in particular to a terminal antenna, an antenna system, and an electronic device. Background Art

[0003] One or more metal decorative parts are provided in electronic devices to provide rigid support to corresponding modules.

[0004] With the development of communication technology, the number of antennas in the limited space of electronic devices is increasing. Some antennas are installed near metal decorative parts.

[0005] As a conductor with a large area, metal decorative parts will have a significant impact on the radiation performance of nearby antennas.

[0006] Summary of the Invention

[0007] The present invention provides a terminal antenna, antenna system, and electronic device that can achieve better radiation performance and wider frequency band coverage by rationally designing the metal deco near the antenna, thereby preventing the metal deco from affecting the antenna radiation while also supporting the antenna radiation.

[0008] In order to achieve the above objectives, the embodiments of the present application adopt the following technical solutions:

[0009] In a first aspect, a terminal antenna is provided, which is disposed in an electronic device. The antenna includes: a first radiator and a second radiator. A first feeding point and a first grounding point are respectively disposed at both ends of the first radiator, and at least one grounding point is disposed on the second radiator. The first feeding point is coupled to a first feed source, and the first grounding point and at least one grounding point on the second radiator are respectively coupled to a reference ground. When the antenna is operating, a first current is distributed on the first radiator. A second current is distributed in a first region on the second radiator. The first region is on a side of the second radiator close to the first radiator, and the first region corresponds to a region where the first radiator projects onto the second radiator. The first current and the second current have the same direction.

[0010] In this way, by setting a grounding point on the second radiator, a current can be generated on the second radiator near the first grounding point in the same direction as that of the first radiator. As a result, the radiation generated by the current in the second radiator not only does not affect the radiation of the first radiator, but also has a positive superposition effect on the radiation of the first radiator, thereby improving the overall radiation performance.

[0011] Optionally, the electronic device has a metal frame structure, the first radiator reuses at least a portion of the metal frame of the electronic device, and the second radiator reuses a metal decorative part in the electronic device.

[0012] It should be noted that, in this example, the radiator of the first antenna is a metal frame. In other embodiments, the radiator of the first antenna may also be in the form of LDS, MDA, FPC, etc.

[0013] Optionally, the minimum distance between the first radiator and the second radiator does not exceed 15 mm.

[0014] Optionally, the at least one grounding point on the second radiator includes a second grounding point, and the second grounding point is arranged in the first area.

[0015] Optionally, the first radiator is provided with a first feeding point and a first grounding point at both ends thereof, respectively, including: the first end of the first radiator is provided with the first grounding point; the second grounding point is provided in the first region, including: the second grounding point is provided at the first end of the first region; and the first end of the first region corresponds to a projection position of the first end of the first radiator on the first region.

[0016] In this example, the second grounding point can be set at a position corresponding to the grounding point of the first radiator, so that the current coupled to the second radiator near the first radiator can produce an effect in the same direction as that on the first radiator in the projection area of ​​the first radiator (i.e., the first area).

[0017] Optionally, the operating frequency band of the first antenna includes a first frequency band. The at least one grounding point on the second radiator includes a third grounding point. The first radiator is provided with a first feeding point and a first grounding point at both ends, respectively, including: the first end of the first radiator is provided with the first grounding point. The projection position of the first end of the first radiator in the first area is a first position. The distance between the third grounding point and the first straight line corresponds to 1 / 2 wavelength of the first frequency band. The first straight line passes through the first position and is perpendicular to the straight line where the first radiator is located.

[0018] In this example, the grounding point on the second radiator can also be located at an end of the first region that is farther away from the grounding point of the first radiator. By controlling the distance between this third grounding point and the projection of the grounding point of the first radiator onto the second radiator, the unidirectional current generated in the first region of the second radiator can operate within the same frequency band as the first radiator. This allows the two unidirectional currents to overlap within the same frequency band.

[0019] Optionally, when the antenna is working, the first radiator operates in a first frequency band, and the second radiator has a third current distributed on a side close to the first radiator, the third current includes the second current, and the third current is used to excite a 1x wavelength mode covering the first frequency band on the second radiator.

[0020] Therefore, it is clear that the operating mode on the side of the second radiator close to the first radiator can be a 1x wavelength mode. The current of a part of the 1x wavelength mode (such as one 1 / 2 wavelength) can have the same direction as the current on the first radiator.

[0021] Optionally, the straight line on which the third current on the second radiator lies is parallel to the straight line on which the first current on the first radiator lies.

[0022] For example, the third current and the first current may be parallel to the straight line where the long side of the electronic device is located.

[0023] Optionally, the operating frequency band of the first antenna includes a second frequency band. At least one grounding point is provided on the second radiator, including: a fourth grounding point is provided on the second radiator. A first feeding point and a first grounding point are provided at both ends of the first radiator, respectively, including: the first end of the first radiator is provided with the first grounding point. The projection position of the first end of the first radiator in the first area is the first position. The distance between the fourth grounding point and the second straight line corresponds to 1 / 2 wavelength or 1 / 4 wavelength of the second frequency band. The second straight line passes through the first position, and the first straight line is parallel to the straight line where the first radiator is located.

[0024] In this example, the second radiator may also be provided with a grounding point remote from the first radiator. This grounding point can excite a current pattern on the second radiator whose direction is perpendicular to the third current. For example, when the third current is longitudinal, the current pattern can be a transverse pattern. This transverse pattern can be controlled by the distance between the fourth grounding point and the second straight line to achieve excitation in a half-wavelength mode or a quarter-wavelength mode, thereby achieving coverage of the second frequency band.

[0025] In some implementations, the first frequency band may be a 2.4 GHz or 5 GHz WIFI frequency band, and the second frequency band may be a GPS frequency band.

[0026] Optionally, a second feeding point is further provided on the second radiator, and the second feeding point is coupled to a second feed source, and the second feed source is used to feed a signal to the second radiator through the second feeding point, so that the second radiator operates in a third frequency band.

[0027] Thus, by adding a feed source to the second radiator, the second radiator can be stimulated to operate in the aforementioned transverse mode and / or longitudinal mode while simultaneously radiating the patch antenna. The third frequency band can correspond to the area of ​​the second radiator. The larger the area of ​​the second radiator, the lower the third frequency band. Conversely, the smaller the area of ​​the second radiator, the higher the third frequency band. In this way, the number of frequency bands covered by the terminal antenna can be expanded without adding new radiators.

[0028] Of course, in some implementations, the coverage of the third frequency band may also be used to enhance the bandwidth of the first frequency band and / or the second frequency band.

[0029] In a second aspect, an antenna system is provided. The antenna system is applied to an electronic device and includes a first antenna and a second antenna. The first antenna is a terminal antenna as provided in the first aspect and any possible design thereof. The operating frequency bands of the antenna system include a first frequency band, a second frequency band, and a third frequency band. The first radiator and the second radiator of the first antenna are configured to cover the first frequency band. The second radiator of the first antenna and the second antenna are configured to cover the second frequency band. The second radiator of the first antenna is also configured to cover the third frequency band.

[0030] Optionally, the second radiator of the first antenna includes a fourth grounding point, and the first end of the first radiator of the first antenna is provided with the first grounding point. The projection position of the first end of the first radiator in the first area is the first position. The first area is close to the side of the first radiator on the second radiator, and the first area corresponds to the area where the first radiator is projected onto the second radiator. The distance between the fourth grounding point and the second straight line corresponds to 1 / 2 wavelength of the second frequency band. The second straight line passes through the first position, and the first straight line is parallel to the straight line where the first radiator is located. As a result, when the second antenna is set, the transverse mode current distribution on the second radiator can be differentiated from the current distribution on the second antenna, thereby ensuring the isolation between the two when the transverse mode and the second radiator cover the same frequency band (such as the second frequency band).

[0031] Optionally, the electronic device has a metal frame structure, the first radiator of the first antenna reuses at least a portion of the metal frame on the first side of the electronic device, and the radiator of the second antenna reuses at least a portion of the metal frame on the second side of the electronic device, and the first side and the second side are two adjacent sides.

[0032] Optionally, the second radiator of the first antenna is arranged near the intersection of the second side and the third side, and the minimum distance from the second radiator to the second side or the third side does not exceed 15 mm.

[0033] In a third aspect, an electronic device is provided, comprising at least one processor, a radio frequency module, and the terminal antenna provided in the first aspect and any possible design thereof, and / or the antenna system provided in the second aspect and any possible design thereof. When transmitting or receiving signals, the electronic device transmits or receives signals via the radio frequency module, the terminal antenna, and / or the antenna system.

[0034] It should be understood that the technical solutions provided in the second and third aspects mentioned above and their technical features can all correspond to the solutions provided in the first aspect and its possible designs, so the beneficial effects that can be achieved are similar and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] FIG1 is a schematic rear view of an electronic device;

[0036] FIG2 is a schematic diagram of a side view of an electronic device;

[0037] FIG3 is a schematic diagram of stacking near a camera module of an electronic device;

[0038] FIG4 is a schematic diagram of an antenna arrangement;

[0039] FIG5 is a schematic diagram of a grounding arrangement of a metal decorative part;

[0040] FIG6 is a schematic diagram showing a comparison of current distribution on a metal decorative part and an antenna;

[0041] FIG7 is a schematic diagram comparing current distribution on an antenna and a metal decorative part provided in an embodiment of the present application;

[0042] FIG8 is a schematic diagram of the working logic of an antenna solution provided in an embodiment of the present application;

[0043] FIG9 is a schematic diagram of the working logic of an antenna solution provided in an embodiment of the present application;

[0044] FIG10 is a schematic diagram of the working logic of an antenna solution provided in an embodiment of the present application;

[0045] FIG11 is a schematic diagram of the working logic of an antenna solution provided in an embodiment of the present application;

[0046] FIG12 is a schematic diagram of a setting range of a grounding point 33 provided in an embodiment of the present application;

[0047] FIG13 is a schematic diagram of an S-parameter simulation of an antenna solution provided in an embodiment of the present application;

[0048] FIG14 is a schematic diagram of the working logic of an antenna solution provided in an embodiment of the present application;

[0049] FIG15 is a schematic diagram of the working logic of an antenna solution provided in an embodiment of the present application;

[0050] FIG16 is a schematic diagram of the working logic of an antenna solution provided in an embodiment of the present application;

[0051] FIG17 is a schematic diagram of the working logic of an antenna solution provided in an embodiment of the present application;

[0052] FIG18 is a schematic diagram of an S-parameter simulation of an antenna solution provided in an embodiment of the present application;

[0053] FIG19 is a schematic diagram of the working logic of an antenna solution provided in an embodiment of the present application;

[0054] FIG20 is a schematic diagram of current simulation of an antenna solution provided in an embodiment of the present application;

[0055] FIG21 is a schematic diagram of current simulation of an antenna solution provided in an embodiment of the present application;

[0056] FIG22 is a schematic diagram of an S-parameter simulation of an antenna solution provided in an embodiment of the present application;

[0057] FIG23 is a schematic diagram of ECC parameter simulation of the antenna solution provided in an embodiment of the present application;

[0058] FIG24 is a schematic diagram of the working logic of an antenna solution provided in an embodiment of the present application;

[0059] FIG25 is a schematic diagram of the setting of a metal Deco provided in an embodiment of the present application. DETAILED DESCRIPTION

[0060] In the following, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this embodiment, unless otherwise specified, "plurality" means two or more.

[0061] The technical solution provided in the embodiment of the present application can be applied to electronic devices. In order to explain the technical solution provided in the embodiment of the present application in detail, a brief example of an electronic device is first given below.

[0062] For example, Figure 1 shows a rear view of an electronic device. In this example, the electronic device is a mobile phone with a metal frame structure. The metal frame can be provided on the side periphery of the electronic device. This metal frame can be used to provide a metallic texture to the user while enhancing the structural strength of the electronic device.

[0063] Generally, an electronic device may be provided with at least one camera module. For example, the at least one camera module may include a front camera module, a rear camera module, etc. Taking the rear camera module as an example, the rear camera module may also be referred to as a rear camera module.

[0064] When the rear camera module is working, it can collect ambient light through at least one camera included therein.

[0065] Correspondingly, as shown in FIG1 , a camera window may be provided on the back cover of the electronic device. The position of the camera window may correspond to the position of the rear camera module of the electronic device. When the back cover is fastened to the electronic device, the camera of the rear camera module may extend from the camera window to facilitate light collection during shooting.

[0066] FIG2 shows an exploded view of some components of an electronic device.

[0067] As shown in FIG2 , a floor can be provided inside the metal frame. The floor can be used to provide a zero potential reference for various electronic components on the electronic device. For example, the floor can provide a zero potential reference for an antenna provided in the electronic device.

[0068] In some implementations, a printed circuit board (not shown in FIG. 2 ) may be mounted on the floor. This printed circuit board (PCB) may be used to support various electronic components in the electronic device. For example, a connector may be provided on the PCB to facilitate signal transmission between the rear camera module and an image processor provided on the PCB.

[0069] In the example shown in Figure 2, the metal frame can be provided with one or more slits extending throughout. These slits can divide the metal frame into multiple, unconnected sections. Different sections of the metal frame can be reused as components of other components. For example, the metal frame can be reused as an antenna radiator.

[0070] As shown in Figure 2, a decorative piece (Deco) may be provided between the rear camera module and the back cover. In some implementations, the decorative piece may be made of metal. Correspondingly, a decorative piece made of metal may be referred to as a metal decorative piece or metal Deco. As shown in Figure 2, the metal Deco may be used to provide rigid protection for the camera in the rear camera module.

[0071] It should be noted that the example shown in FIG2 is only an example of a metal decorative part. In other implementations, a steel sheet may be embedded in the metal decorative part to improve the structural strength of the corresponding position.

[0072] Figure 3 shows the relative positions of the rear camera module, metal Deco, back cover and side metal frame from the perspective of the xoz plane.

[0073] As shown in Figure 3, the rear camera module, metal deco, and back cover are arranged in the z-direction. The metal frame can be located on the side of the metal deco (e.g., in the positive x-direction). The rear camera module's camera can extend through the metal deco and out of the back cover in the z-direction to collect light.

[0074] In the example of Figure 3, the metal Deco may include a top metal part of the xoy plane and a side metal part of the yoz plane. The side metal parts may be arranged on both sides of the top metal part for rigidly supporting the top metal. As a possible implementation, one end of the side metal part is connected to the top metal part, and the other end may be fixed to the PCB. The fixing method may include welding, crimping, etc. In different cases, the side metal is not necessarily connected to the reference ground on the mainboard. That is, the metal Deco may be grounded or not.

[0075] As the shooting capabilities of electronic devices improve, the settings of rear camera modules become more and more complex. As a result, the size of the rear camera module continues to expand. The size of the metal deco can be slightly larger than the rear camera module. Therefore, the size of the metal deco also increases with the expansion of the rear camera module. The distance between the metal deco and the side (or top) metal frame is correspondingly reduced. In some cases, the minimum distance between the metal deco (such as the top metal part and / or the side metal part of the metal deco) and the side metal frame is close to or even less than 15mm.

[0076] An antenna may be provided in an electronic device to implement wireless communication functions of the electronic device. Taking the electronic device shown in FIG1 to FIG3 as an example, an antenna implementation solution therein is described.

[0077] For example, the antenna is set on the side, such as the long side in the upper left corner of the back view shown in FIG1 .

[0078] In some embodiments, in an electronic device with a metal frame structure as shown in Figures 1-3, the radiator of the antenna can reuse the metal frame to achieve the purpose of radiation. The antenna with the radiator reused in the metal frame is also called a frame antenna.

[0079] Figure 4 shows an example of an antenna A1 solution. As shown in Figure 4 , the radiator 11 of antenna A1 can reuse the corresponding metal frame. In some implementations, the projection of the metal frame serving as the radiator of antenna A1 in the negative x-axis direction can include at least a portion falling on the metal Deco.

[0080] A feed source and a ground point can be provided on the radiator of antenna A1. In the example solution shown in Figure 4, feed source F1 can be provided at the lower end of the radiator, and ground point G1 can be provided at the upper end of the radiator. In some implementations, antenna A1 can operate in a left-handed mode for radiation. For example, a capacitor can be connected in series between feed source F1 and the radiator to excite the left-handed mode. In other implementations, antenna A1 can also be in other antenna forms, such as IFA, ILA, loop, etc.

[0081] It is understandable that any metal material near the antenna radiator will affect the radiation of the antenna.

[0082] 1 to 4 , when the metal Deco is close to the radiator 11 of the antenna A1 (eg, the minimum distance is less than 15 mm), it will affect the radiation of the antenna A1.

[0083] In order to deal with the influence of the metal Deco on the antenna A1, generally, a ground connection can be provided on the metal Deco to construct a short-circuit wall, thereby isolating the radiation of the antenna A1 when it is working.

[0084] For example, FIG5 is a schematic diagram of setting a grounding point on a metal Deco to construct a short-circuit wall.

[0085] As shown in FIG. 5 , there may be at least two grounding points on the metal Deco.

[0086] For example, the grounding points on the metal Deco may include point 21 and point 22. The point 21 and point 22 may be respectively set on one side of the metal Deco close to the antenna A1 radiator. Take the antenna A1 radiator being set on the side as an example. Then point 21 and point 22 on the metal Deco may be set on the side of the metal Deco close to the side metal frame (such as the left side). In some implementations, as shown in FIG5 , point 21 and point 22 may be respectively set at the upper left corner and the lower left corner of the metal Deco. Thus, a short-circuit wall that is nearly parallel to the antenna A1 radiator can be equivalently constructed between point 21 and point 22. The short-circuit wall can effectively isolate the inward radiation generated when the antenna A1 is working.

[0087] In the example shown in Figure 5 , a grounding point 23 can also be provided on the metal deco. This point 23 can be located in the upper right corner of the metal deco. This allows point 23 and point 22 to form a transverse short-circuit barrier. This transverse short-circuit barrier can further isolate the inward radiation of antenna A1. Furthermore, if an antenna is also installed on the top of the electronic device, this transverse short-circuit barrier can also serve to isolate the radiation of the top antenna.

[0088] However, in the solution implementation shown in Figure 5, since the metal Deco is close to the antenna radiator, even with the grounding setup shown in Figure 5, the metal Deco still affects the antenna radiation.

[0089] For example, as shown in Figure 6, take the current distributed on the antenna radiator at the current moment as an example, which flows from the ground point to the feed direction. An electric field in the same direction can be distributed between the antenna radiator and the metal Deco, such as an electric field directed from the radiator to the metal Deco. Based on the electromagnetic coupling of the electric field, a current in the opposite direction to that on the antenna radiator will be generated at the edge of the metal Deco close to the antenna radiator. For example, the direction of the current generated on the metal Deco can be directed from point 22 to point 21. It should be noted that the electric field example shown in Figure 6 is only an example of direction and distribution, and has no corresponding relationship with the electric field strength at various positions in space.

[0090] As a result, the reverse currents flowing through the metal deco and the antenna radiator cause the structure between the metal deco and the antenna radiator to exhibit electric field energy storage states at different phases, thereby affecting the normal radiation of antenna A1. In other words, the grounding of the metal deco as shown in Figures 5 or 6 can still significantly affect the normal operation of nearby antennas (such as antenna A1).

[0091] It is understandable that in the above implementation, the antenna A1 close to the metal Deco is used as a frame antenna for illustration. In other cases, even if the antenna A1 has other settings, similar problems still exist. For example, when the antenna A1 is implemented by laser direct structuring (LDS), metalframe diecasting for anodic oxidation (MDA), flexible printed circuit (FPC), etc., when the metal Deco is set according to the grounding scheme shown in Figure 5 or Figure 6, the metal Deco will also affect the normal operation of the antenna A1.

[0092] To address the issue of a Metal Deco significantly impacting the antenna's radiation performance when placed close to the antenna (e.g., a minimum distance less than 15mm), this embodiment of the present application provides a terminal antenna that can select at least one grounding point at a preset location on the Metal Deco. This at least one grounding point prevents the Metal Deco from affecting the antenna's radiation.

[0093] In addition, by setting at least one grounding point at the preset position, the metal Deco can be effectively stimulated to generate parasitic resonance, which is used to expand the antenna coverage bandwidth and / or improve the radiation performance of the antenna body.

[0094] In some embodiments, more grounding points at preset positions can be set on the metal Deco, so that the metal Deco can also stimulate currents perpendicular to the straight line where the long side of the antenna radiator is located (such as transverse currents). By adjusting the position of the docking point, the current distribution can also be used to improve the radiation performance of the antenna. In some embodiments, when multiple antennas of the same frequency or adjacent frequency (that is, the frequency bands include at least partial overlap) are provided in the electronic device, the isolation between the antennas is increased by reasonably adjusting the working mode of the transverse current, thereby avoiding mutual interference between the antennas.

[0095] In some embodiments, additional feed sources can be installed on the Metal Deco, allowing it to operate in another frequency band without affecting the radiation of the original antenna, thereby enriching the frequency band coverage of the electronic device.

[0096] The technical solutions provided in the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0097] It should be noted that the antenna solution provided in the embodiments of the present application can be applied to a user's electronic device. This electronic device can also be referred to as a terminal device. When the antenna solution provided in the embodiments of the present application is provided in a terminal device, it can also be referred to as a terminal antenna. The antenna solution provided in the electronic device can be used to support the wireless communication function of the electronic device. For example, the electronic device may include a mobile phone as shown in Figures 1-3.

[0098] In other implementations, the electronic device may have other implementation forms. For example, the electronic device may be a smart switch, an electronic switch, a tablet computer, a desktop computer, a laptop computer, a handheld computer, a notebook computer, an in-vehicle device, an ultra-mobile personal computer (UMPC), a netbook, a cellular phone, a personal digital assistant (PDA), an augmented reality (AR) or virtual reality (VR) device, etc. The embodiments of the present application do not impose any particular restrictions on the specific form of the electronic device.

[0099] As an example, from the perspective of hardware composition, the electronic device may include a processor, an external memory interface, an internal memory, a universal serial bus (USB) connector, a charging management module, a power management module, a battery, at least one antenna, a mobile communication module, a wireless communication module, an audio module, a speaker, a receiver, a microphone, an earphone interface, a sensor module 180, a button, a motor, an indicator, a camera module, a display, and a subscriber identification module (SIM) card interface, etc. The sensor module may include a pressure sensor, a gyroscope sensor, an air pressure sensor, a magnetic sensor, an acceleration sensor, a distance sensor, a proximity light sensor, a fingerprint sensor, a temperature sensor, a touch sensor, an ambient light sensor, a bone conduction sensor, etc.

[0100] When the electronic device provides wireless communication functionality to a user, at least one antenna may be coupled to the mobile communication module and / or the wireless communication module to enable signal transmission and reception. In some embodiments, the electronic device may have a metal frame structure as shown in Figure 1 or Figure 2, and the at least one antenna may be a frame antenna.

[0101] For example, in some embodiments, the at least one antenna may include an antenna A1 disposed near the metal Deco and on the long side of the electronic device. In the present application, the relative relationship of the vicinity is similar to the relative position relationship of closeness, which can be understood as: the minimum distance between the metal frame reused as the antenna radiator and the metal Deco does not exceed 15mm. The operating frequency band of the antenna A1 may include a first frequency band, or the operating frequency band of the antenna A1 may include a first frequency band and a second frequency band. For example, the first frequency band may be a 2.4G WIFI frequency band. The 2.4G WIFI frequency band may include 2.4GHz-2.5GHz. The second frequency band may be a GPS frequency band. The GPS frequency band may include 1575MHz.

[0102] In other embodiments, the at least one antenna may include antenna A1, located near the metal deco, on a long side of the electronic device; and antenna A2, located near the metal deco, on a short side of the electronic device. The operating frequency band of antenna A1 is similar to that in the above example. The operating frequency band of antenna A2 may include the first frequency band, or may include both the first and second frequency bands.

[0103] As a possible implementation, the operating frequency band of antenna A1 may at least partially overlap with the operating frequency band of antenna A2. For example, the operating frequency band of antenna A1 includes the 2.4G WiFi band, and the operating frequency band of antenna A2 includes both the 2.4G WiFi band and the GPS band.

[0104] In this example, the camera module may include a rear camera module, a front camera module, etc. In conjunction with the above description, the rear camera module may be provided with a corresponding metal deco. The configuration of the metal deco can refer to the schematic diagrams shown in Figures 2 or 3. In different implementations, the x-dimension of the metal deco can be in the range of 5mm to 85mm. The y-dimension of the metal deco can be in the range of 5mm to 85mm.

[0105] In this embodiment, at least one grounding point can be provided at a preset location on the metal deco. When an antenna operates near the metal deco, electromagnetic coupling can be used to stimulate a current in the same direction as the antenna (e.g., antenna A1) at a location on the metal deco corresponding to the antenna radiator, thereby improving antenna performance.

[0106] It should be noted that in existing designs, the radiator of antenna A1 can include part of the metal frame on the side of the electronic device. The grounding scheme for the metal deco in this application allows the metal deco to radiate as part of antenna A1. Therefore, in this application, the radiator of antenna A1 can include part of the metal frame on the side of the electronic device, as well as the metal deco.

[0107] It should be understood that the structure illustrated in the embodiments of the present application does not constitute a specific limitation on the electronic device.

[0108] For example, the antenna A1 and / or the antenna A2 in the electronic device may also be implemented in the form of FPC, LDS, MDA, etc. The effects that can be achieved are similar and will not be described in detail.

[0109] In other embodiments of the present application, the electronic device may include more or fewer components, or combine certain components, or separate certain components, or arrange the components differently. The above components may be implemented in hardware, software, or a combination of software and hardware.

[0110] The following will describe in detail the terminal antenna solution provided by the embodiment of the present application with reference to the accompanying drawings. The terminal antenna solution can achieve its effect through the corresponding grounding setting on the metal Deco.

[0111] 4 to 6 , the frame antenna A1 located on the side of the electronic device and disposed near the metal Deco is taken as an example.

[0112] For example, refer to FIG7 , which is an example of a terminal antenna solution provided in an embodiment of the present application.

[0113] The antenna solution shown in FIG. 7 may include at least two logical components: an antenna body and a metal Deco.

[0114] The antenna body may correspond to the antenna A1 in the existing design (such as the designs shown in FIG. 4 to FIG. 6 ).

[0115] With reference to FIG6 , antenna A1 can be a side frame antenna. The radiator 11 of antenna A1 can be provided with a grounding point and a feed source. The feed source can be located at one end of radiator 11, such as the lower end corresponding to the negative direction of the y-axis. The grounding point can be located at the other end of radiator 11, such as the upper end corresponding to the positive direction of the y-axis.

[0116] At least one grounding point may be provided on the metal Deco.

[0117] In some implementations of the present application, antenna A1 shown in FIG7 may also be referred to as the first antenna. Radiator 11 of antenna A1 may be referred to as the first radiator. Metal Deco may be part of the first antenna, for example, Metal Deco may be referred to as the second radiator.

[0118] Exemplarily, the at least one grounding point may include a point 31 for grounding. In some implementations, the point 31 may be referred to as a second grounding point.

[0119] As shown in FIG. 7 , the point 31 may be set on one side of the radiator 11 of the Metal Deco Antenna A1 .

[0120] The point 31 may be set close to a point where the ground return current of the antenna A1 is large.

[0121] For example, consider antenna A1 in Figure 7. The largest ground return current point for antenna A1 can be located at ground point G1 of antenna A1. The setting of point 31 on the metal deco can refer to the following two definitions (as shown in 1-1 and 1-2):

[0122] 1-1. In the x-direction, point 31 can be set on a side of the metal Deco near antenna A1. This side can refer to the edge of the metal Deco near antenna A1, or an area on the metal Deco extending no more than 10 mm inward (i.e., in the negative x-axis direction) from the edge near antenna A1.

[0123] 1-2. In the y-direction, point 31 can coincide with or be close to the projection of G1 onto Metal Deco (i.e., the projection along the negative x-axis). The proximity of G1's projection onto Metal Deco to point 31 can be understood as: point 31 is within a range of + / - 15mm along the y-direction from the projection of G1 onto Metal Deco. In other words, a one-dimensional coordinate is established in the y-direction, centered on the projection of G1 onto Metal Deco. Point 31 can be set within a range of -15mm to 15mm.

[0124] In some embodiments of the present application, when the configuration of point 31 (or the second grounding point) complies with the limitations of 1-1 and 1-2 above, the second grounding point can be considered to correspond to the projection position of the first end of the first radiator in the first region. It will be understood that when point 31 coincides with the projection of grounding point G1 on the side of the metal Deco closest to the radiator 11, the position corresponding to point 31 can also be referred to as the first position.

[0125] It should be noted that the first area involved in the embodiment of the present application may be a partial area on the second radiator (i.e., metal Deco) close to the antenna A1. The first area may include the area where the radiator 11 is projected onto the metal Deco. For example, the upper end of the first area may be the position corresponding to point 31. The lower end of the first area may be the position after the feed source F1 of the antenna A1 is projected onto the metal Deco. Alternatively, the lower end of the first area may extend to the lower edge of the metal Deco.

[0126] In this example, by setting point 31, when antenna A1 is working, energy can be coupled to the metal Deco through point 31, thereby forming a longitudinal current distribution on the metal Deco.

[0127] Because the location of point 31 meets the requirements of 1-1 and 1-2 above, the direction of the current flowing on the metal deco at the location corresponding to the radiator 11 of antenna A1 (i.e., the projection of radiator 11 on the metal deco) can be the same as the direction of the current flowing on radiator 11. This avoids the impact of reverse current on the radiation process of antenna A1 as shown in Figure 6.

[0128] Furthermore, the longitudinal (i.e., y-direction) current on the metal Deco can also be used to enhance the radiation performance of antenna A1 through a 1x wavelength mode. In some embodiments, this 1x wavelength mode of the longitudinal current can be used to cover a first frequency band. In other embodiments, this 1x wavelength mode of the longitudinal current can be used to cover a second frequency band.

[0129] For example, the first frequency band is covered by the longitudinal 1-times-wavelength mode on the metal Deco. The center frequency wavelength of the first frequency band is the first wavelength.

[0130] 8 , in some embodiments, it is taken as an example that the y-dimension of the metal Deco is greater than or equal to the first wavelength.

[0131] By setting the return ground of point 31, a current distribution in the y direction that meets the resonance characteristics of 1 times the wavelength corresponding to the first frequency band can be excited on the metal Deco near the edge of the antenna A1.

[0132] For example, as shown in Figure 8, a current 41 can be distributed from point 31 toward the negative y-axis, in the same direction as that on radiator 11. A current 42 can be distributed from point 31 toward the positive y-axis. Point 31 can be represented as a current reversal point, i.e., a current reversal point corresponding to the 1x wavelength mode. The electrical lengths of currents 41 and 42 can each be close to or equal to 1 / 2 of the first wavelength. Thus, currents 41 and 42 can together constitute a current distribution with a 1x wavelength resonance characteristic corresponding to the first frequency band.

[0133] In some embodiments, the current 41 may be referred to as a second current. The current 41 and the current 42 may together constitute a third current corresponding to 1 times the wavelength.

[0134] Thus, the Metal Deco can excite a 1x wavelength mode corresponding to the operating frequency band of the antenna A1 in the y direction. In other words, the Metal Deco can generate a 1x wavelength resonance corresponding to the first frequency band based on the parasitic principle.

[0135] In this way, the longitudinal 1-times-wavelength mode resonance generated by the metal Deco and the resonance generated by the antenna A1 can be superimposed in space to jointly cover the first frequency band, thereby improving the radiation performance of the antenna A1 in the first frequency band.

[0136] It should be noted that, in some embodiments, after a point 31 is set on the metal Deco, the metal Deco can be directly grounded at the point 31 .

[0137] In other embodiments, after point 31 is set on the metal Deco, a matching circuit may be provided between point 31 on the metal Deco and the reference ground. For example, the matching circuit may include at least one of an inductor, a capacitor, and a resistor. The type and number of components in the matching circuit may be selected based on actual conditions.

[0138] For example, a matching circuit that includes a capacitor can be set to a value between 0pF and 10pF. This capacitor can be used to tune the coupling between the metal deco and antenna A1 at point 31, thereby stimulating better radiation from the 1x wavelength mode on the metal deco.

[0139] By providing a grounding point 31 on the metal deco, current can flow in the same direction as that of antenna A1 in the area of ​​the metal deco corresponding to antenna A1, thus preventing the metal deco grounding from affecting the operation of antenna A1. Furthermore, by stimulating the 1x wavelength mode on the metal deco, the radiation performance of antenna A1 can be improved.

[0140] In conjunction with the above description, a matching circuit is provided between point 31 and the reference ground to achieve relevant adjustments. In some embodiments, by properly adjusting the capacitance and inductance of the components in the matching circuit, the resonance corresponding to the longitudinal (y-direction) 1x wavelength mode of Metal Deco can be tuned to the first frequency band.

[0141] In other embodiments of the present application, more grounding points can be set on the metal Deco to achieve the purpose of tuning the frequency band to cover 1 times the wavelength.

[0142] For example, referring to FIG9 , a grounding point 32 may be provided below point 31 (in the negative y-axis direction). The y-distance between point 32 and point 31 may be controlled to be 1 / 2 of the first wavelength. In some implementations, the y-distance between point 32 and point 31 may also be described as the distance from point 32 to a first straight line. The first straight line may be a straight line passing through point 31, and the first straight line may be perpendicular to the line along which radiator 11 lies. In other words, the first straight line may be a straight line passing through point 31 along the x-axis.

[0143] In this way, point 32 can effectively divert the y-direction current on the metal Deco to the reference ground at a position half a wavelength away from point 31, thereby tuning the 1x wavelength mode tuning coverage frequency band on the metal Deco to the first frequency band. In this example, point 32 can also be called the third grounding point. The y-direction current corresponding to the 1x wavelength mode on the metal Deco can be called the third current. The current between point 32 and point 31 can be the second current. The current on the radiator 11 can be the first current. On the metal Deco, the distribution area of ​​the second current can also correspond to the first area on the metal Deco. That is, the third current includes the second current. The second current is in the same direction as the first current.

[0144] Similar to the matching circuit at point 31, in some embodiments, a matching circuit may also be provided between point 32 and the reference ground. The matching circuit may include at least one of a capacitor, an inductor, and a resistor. The matching circuit may be used to tune the wavelength of the metal deco.

[0145] As an example, if the y-axis dimension of the Metal Deco is less than 2 / 2 times the first wavelength, point 32 can be placed at the bottom of the Metal Deco in the negative y-axis direction. An inductor can be added to the matching circuit between point 32 and the reference ground to increase the electrical length from point 31 on the Metal Deco back to the ground. This in turn tunes the 1x wavelength mode on the Metal Deco to near the first frequency band.

[0146] It is understood that, as shown in the example of Figure 9, by setting point 32 on the side of the metal Deco near antenna A1, half a wavelength below point 31, the frequency band covered by the 1x wavelength mode is tuned. Accordingly, in other embodiments, the grounding point used to control the electrical length of the 1x wavelength mode can also be set above point 31.

[0147] For example, in conjunction with Figure 10. A point 32' for grounding can be set on the metal Deco. The y-direction distance between point 32' and point 31 can be controlled to be about 1 / 2 of the first wavelength. In this way, the effect of adjusting the electrical length corresponding to the current 42 in the current distribution of the 1x wavelength mode is achieved. Similar to the setting of point 32 above, in the example shown in Figure 10, the 1x wavelength mode on the metal Deco can also be tuned to near the first frequency band through the setting of point 32'. The settings and deformations related to point 32' can refer to the description of point 32. For example, a matching circuit can be set between point 32' and the reference ground.

[0148] The above descriptions of FIG9 and FIG10 illustrate the y-dimension setting of point 32 (or point 32'). In different implementations, the x-dimension of point 32 (or point 32') can be flexible. Take point 32 as an example.

[0149] In some embodiments, the x-axis coordinate of point 32 may be the same as or close to the x-axis coordinate of point 31. That is, point 32 may be located on a side of the metal Deco close to the antenna A1.

[0150] In other embodiments, the x-axis coordinate of point 32 may be different from that of point 31. For example, point 32 may be located on a side of the Deco away from antenna A1.

[0151] In the embodiment of the present application, under different x-axis settings, by controlling the longitudinal (y-axis) coordinate difference between point 32 and point 31 to 1 / 2 of the first wavelength, even if the line connecting point 32 and point 31 is at an angle to the y-axis (i.e., the current returns to the ground in a direction pointing downward and to the right), based on orthogonal decomposition, the oblique current can be decomposed into a portion of the 1x wavelength mode in the y-axis (such as current 41). This achieves the effect of tuning the 1x wavelength mode in the y-axis on Metal Deco by setting point 32.

[0152] In some other implementations of the present application, the Metal Deco may also be provided with a point 32 as shown in FIG9 and a point 32' as shown in FIG10. By providing these points 32 and 32', the electrical length of the return current on both sides of point 31 is adjusted simultaneously, allowing the 1x wavelength mode on the Metal Deco to more accurately cover the first frequency band.

[0153] The solution examples in Figures 7-10 above, by providing at least one grounding point on the metal deco, excite the 1x wavelength mode in the longitudinal direction (y-direction) of the metal deco. This avoids affecting the radiation of antenna A1 and improves the radiation performance of antenna A1 in the first frequency band.

[0154] It will be appreciated that the above example illustrates the use of a longitudinal wavelength of 1x to cover the first frequency band. In other embodiments, the longitudinal wavelength of 1x can also be used to cover the second frequency band or other frequency bands. For specific implementations, reference can be made to the descriptions in Figures 7-10 above and will not be repeated here.

[0155] In other embodiments of the present application, a grounding point is provided on the metal Deco, which can also be used to couple the transverse (x-direction) current generated on the metal Deco. This transverse current can also be used to improve the radiation performance of the operating frequency band. For example, the radiation performance of the second frequency band can be improved by using the transverse current. The wavelength of the center frequency of the second frequency band can be the second wavelength.

[0156] For example, in some embodiments, the transverse current can cover the second frequency band through a 1 / 2 wavelength mode, thereby improving the radiation performance in the second frequency band. In other embodiments, the transverse current can cover the second frequency band through a 1 / 4 wavelength mode, thereby improving the radiation performance in the second frequency band.

[0157] In conjunction with the descriptions in Figures 7 to 10, refer to Figure 11. In this example, a point 33 can be provided on the metal Deco for grounding. The provision of this point 33 can achieve the effect of exciting a transverse current.

[0158] In this example, the position of point 33 can meet the following two restrictions (as shown in 2-1 and 2-2):

[0159] 2-1. In the y-direction, point 33 has the same or similar y-coordinate parameters as point G1 of antenna A1, where the return current is high. Alternatively, point 33 can be located on the line where the projection of antenna A1's ground point G1 onto the metal Deco along the x-axis.

[0160] 2-2. In the x direction, the distance between point 33 and the edge of the metal Deco close to the antenna A1 can be controlled to be 1 / 4 of the second wavelength or 1 / 2 of the second wavelength.

[0161] From another perspective, point 33 can also be called the fourth grounding point. The location of this fourth grounding point can be described as a distance between the fourth grounding point and the second straight line corresponding to 1 / 2 wavelength or 1 / 4 wavelength of the second frequency band. The second straight line can be a line along the y-axis (i.e., parallel to the line along which radiator 11 lies). This second straight line can pass through point 31 (e.g., the first position).

[0162] In this example, the setting of point 33 allows the energy on antenna A1 to be coupled to the metal Deco and then flow back to the reference ground in the transverse direction at point 33. This stimulates a transverse current on the metal Deco.

[0163] In different implementations, by limiting the position of point 33, the transverse current can correspond to the 1 / 2 wavelength or 1 / 4 wavelength mode of the second frequency band, thereby allowing the transverse current to cover the second frequency band in the 1 / 2 wavelength mode or the 1 / 4 wavelength mode.

[0164] For example, in some embodiments, taking the example of the lateral (x-axis) length between point 33 and G1 corresponding to the position of the metal Deco (i.e., the position of point 31 described above) being 1 / 4 of the second wavelength, the metal Deco can be excited to acquire a lateral 1 / 4 wavelength mode covering the second frequency band.

[0165] In other embodiments, for example, the lateral (x-direction) length between point 33 and G1 corresponding to the position of the metal Deco (i.e., the position of the aforementioned point 31) is 1 / 2 of the second wavelength. The metal Deco can be excited to acquire a lateral 1 / 2 wavelength mode covering the second frequency band.

[0166] In this way, by exciting the transverse current on the metal Deco, the purpose of covering the second frequency band is achieved. It can be understood that when the operating frequency band of antenna A1 includes the second frequency band, the 1 / 2 wavelength mode or 1 / 4 wavelength mode covering the second frequency band excited on the metal Deco can be superimposed on the radiation of antenna A1, thereby improving the radiation performance of antenna A1 in the second frequency band. When the operating frequency band of the antenna body (i.e., the radiator 11) of antenna A1 does not include the second frequency band, by exciting the 1 / 2 wavelength mode or 1 / 4 wavelength mode on the metal Deco to cover the second frequency band, the effect of expanding the frequency band coverage of antenna A1 is achieved.

[0167] It should be noted that, in combination with the description of 2-1 above. In the specific implementation process, the y-direction (i.e., longitudinal) setting of the point 33 may be restricted by other components, so it is difficult to accurately keep consistent with the y-direction coordinate of the grounding point G1. Correspondingly, in some embodiments of the present application, the y-direction coordinate of the point 33 may also be close to the coordinate parameters of G1. For example, with reference to Figure 12, an example of the setting range of point 33 provided in an embodiment of the present application is shown. Point 33 is set within a range of a / 2 extending in the positive y-direction (above as shown in Figure 12) and a / 4 extending in the negative y-direction (below as shown in Figure 12) with the y-coordinate of G1 as the origin. Wherein, a is the total y-direction length of the metal Deco. In this way, even if point 33 is not strictly set on the right side of G1, the point 33 can adjust the oblique current distributed on the metal Deco, and can be decomposed into two current modes of 1 times the wavelength in the longitudinal direction and 1 / 4 wavelength or 1 / 2 wavelength in the transverse direction through orthogonal decomposition. In this way, the radiation performance of antenna A1 is improved while avoiding affecting antenna A1.

[0168] FIG12 above illustrates an example of the y-direction setting range of point 33 based on a specific size. In other embodiments, taking point 33 as an example for stimulating a 1 / 4 wavelength horizontally on Metal Deco, the y-direction setting range of point 33 may also be: with the y-coordinate of G1 as the origin, extending upward by 1 / 4 wavelength and downward by 3 / 4 wavelength.

[0169] In addition, a corresponding matching circuit may be provided between point 33 and the reference ground. The configuration of this matching circuit can refer to the matching circuit corresponding to point 31 in the aforementioned example. The functions and configurations of the two are similar and will not be further described here.

[0170] It should be noted that in this example, the placement of point 33 does not change the boundary conditions of the metal deco relative to the antenna body of antenna A1. Therefore, the placement of point 33 does not affect the coupling state from ground point G1 on radiator 11 to the metal deco. Thus, the placement of point 33, while still being able to stimulate the transverse currents described in the aforementioned implementation, can also result in a longitudinal 1x wavelength pattern distributed on the metal deco, as shown in Figures 7 and 8.

[0171] That is, by setting the point 33 as shown in FIG11 , the longitudinal 1-times-wavelength mode and the transverse 1 / 2-wavelength mode or 1 / 4-wavelength mode can be excited simultaneously on the metal Deco.

[0172] In some implementations, the longitudinal mode can be used to cover a first frequency band, and the transverse mode can be used to cover a second frequency band.

[0173] The following describes the effect of setting point 33 in combination with specific simulation results.

[0174] As an example, it is taken as an example that the lateral 1 / 2 wavelength is excited by setting point 33 .

[0175] As shown in FIG13 , it is taken as an example that the working frequency band of antenna A1 (ie the first frequency band mentioned above) covers the 2.4G WIFI frequency band.

[0176] As shown in S11 (i.e., return loss) in Figure 13, the case where metal Deco is not set is compared. In the case of setting metal Deco, and after setting point 33 to ground according to the scheme shown in Figure 11 or Figure 12, three resonances can be expressed on S11. Such as resonance 51-resonance 53. Among them, the resonance 51 can correspond to the resonance of the transverse 1 / 2 mode on the metal Deco. Resonance 52 can correspond to the resonance generated by the antenna body part of antenna A1 (i.e., radiator 11). Resonance 53 can correspond to the resonance of the longitudinal 1 times wavelength mode on the metal Deco. It can be seen from the return loss that even if metal Deco is set, the bandwidth is significantly improved due to the application of the setting of point 33 provided in this application. The resonance depth is also significantly optimized.

[0177] Figure 13 shows the system efficiency compared to the case without the metal deco. With the metal deco installed and point 33 grounded as shown in Figures 11 or 12, efficiency around 2.4 GHz to 2.5 GHz is significantly improved. The efficiency peak in the horizontal half-wavelength mode (i.e., the mode corresponding to resonance 51) is close to -2 dB. The efficiency peak in the vertical single-wavelength mode (i.e., the mode corresponding to resonance 53) is close to -4 dB.

[0178] Thus, by using the grounding arrangement shown in Figures 11 and 12, stimulating both transverse and longitudinal modes can effectively improve the radiation performance of antenna A1. It should be understood that Figure 13 above illustrates the example of stimulating a transverse half-wavelength mode on Metal Deco. In other embodiments, similar effects can be achieved by adjusting the x-coordinate parameters of point 33 to stimulate a quarter-wavelength mode on Metal Deco.

[0179] In the descriptions of Figures 11 through 13 above, the placement of point 33 enables simultaneous excitation of both the transverse and longitudinal modes on the Metal Deco. In some embodiments, refer to Figure 14 in conjunction with the description of Figure 9 above. While point 33 is placed on the Metal Deco, point 32 can also be placed near the edge of antenna A1. The y-axis coordinate of point 32 differs from the y-axis coordinate of point 33. This point 32 can be used to control the return current of the longitudinal 1x wavelength mode, thereby tuning the 1x wavelength mode to the desired frequency band.

[0180] For example, let's use a longitudinal 1x wavelength mode to cover the first frequency band. The difference in the y-axis coordinates between point 32 and point 33 corresponds to 1 / 2 of the first wavelength. Adjusting point 32 ensures that the current distribution on the side of Metal Deco near antenna A1 matches the 1x wavelength mode distribution characteristics for the first frequency band. This effectively tunes the longitudinal 1x wavelength mode to the first frequency band.

[0181] In the grounding scheme shown in FIG14 , it is also possible to excite a lateral mode on the metal Deco based on the description of FIG11 .

[0182] Refer to Figure 15. For example, consider G2, the x-axis projection of G1 on the side of the metal deco closest to antenna A1, and the transverse excitation of a half-wavelength mode on the metal deco. By adjusting the transverse (x-axis) distance b1 between point 33 and G2, as well as the longitudinal (y-axis) distance between point 32 and G2, the frequency coverage of the transverse half-wavelength mode and the longitudinal 1 / 100 wavelength mode can be adjusted.

[0183] For example, in the above example, taking the horizontal 1 / 2 wavelength mode covering the second frequency band and the vertical 1 times wavelength mode covering the low frequency band as an example, b1 can be set to correspond to 1 / 2 of the first wavelength, and b2 can be set to correspond to 1 / 2 of the second wavelength.

[0184] For example, if the horizontal 1 / 4 wavelength mode covers the second frequency band and the vertical 1 times wavelength mode covers the low frequency band, then b1 can be set to correspond to 1 / 2 of the first wavelength and b2 can be set to correspond to 1 / 4 of the second wavelength.

[0185] In other cases, the coverage frequency band adjustment method of the horizontal 1 / 2 wavelength mode and the vertical 1 wavelength mode can be adjusted by referring to the corresponding adjustment in the above examples and will not be repeated here.

[0186] 14 and 15 , two grounding points can be set on the metal Deco to achieve excitation of both the transverse mode and the longitudinal mode. The frequency bands covered by the transverse mode and the longitudinal mode can be the same or different.

[0187] In some other embodiments of the present application, three grounding points may be provided on the metal Deco at the same time. By adjusting the positions of the three grounding points, the excitation of the transverse mode and the longitudinal mode can be further tuned.

[0188] For example, refer to Figure 16. Points 31, 32, and 33 can be set on the metal Deco at the same time.

[0189] The settings of point 31, point 32, and point 33 can refer to the description in the above examples respectively, and their specific implementations can refer to each other.

[0190] It should be noted that, as previously described for the setting of point 32, in the example of Figure 16 , the x-axis position of point 32 can also be flexibly selected. For example, point 32 can be set below point 31, that is, on the side of the metal deco closer to the radiator 11. In another example, point 32 can be set below point 33, that is, on the side of the metal deco farther from the radiator 11. In different implementations, taking the longitudinal mode covering the first frequency band as an example, the difference in y-axis coordinates between point 32 and point 31 or point 33 can be controlled to be approximately 1 / 2 of the first wavelength. This achieves the effect of tuning the coverage band of the longitudinal mode to near the first frequency band.

[0191] The above solution description uses an electronic device equipped with a side antenna A1 as an example to illustrate the Metal Deco's placement and effects. It's understood that if the antenna A1 is placed in a different location near the Metal Deco, the location of the grounding point on the Metal Deco can be adjusted accordingly to achieve the desired effect.

[0192] It should be understood that the above examples all use antenna A1 as a left-hand antenna. When implementing antenna A1 in other forms, the location of the metal deco near the longitudinal side (e.g., point 31) may need to be adjusted based on the current peak point of the antenna body on antenna A1. Adjusting point 31 to the area near the current peak of the antenna body on antenna A1 improves coupling strength and achieves optimal longitudinal excitation of 1 wavelength.

[0193] Therefore, by providing at least one grounding point (e.g., at least one of points 31 through 33) on the metal deco near antenna A1, the metal deco can effectively radiate as part of antenna A1. This improves antenna A1's radiation capability while minimizing the metal deco's impact on antenna A1.

[0194] It is understandable that other antennas besides antenna A1 may be provided in the electronic device. For example, antenna A2 may be provided in the electronic device near the metal Deco.

[0195] For example, let's take the example of an electronic device having antenna A2 on the top left side of the back view.

[0196] Antenna A2 can be positioned above the metal Deco (i.e., in the positive direction of the y-axis). Antenna A2 can include a radiator, such as radiator 12. For example, antenna A2 is an IFA-type frame antenna. Antenna A2 can include a ground point G3 positioned at the left end of radiator 12. Antenna A2 can also include a feed source F2 positioned on radiator 12.

[0197] When antenna A2 is working, its working frequency band can be covered by the 1 / 2 wavelength mode or the 1 / 4 wavelength mode.

[0198] Exemplarily, the operating frequency band of antenna A2 may include a first frequency band and / or a second frequency band. The operating frequency band of antenna A2 may at least partially overlap with that of antenna A1. The first frequency band may be a 2.4 GHz Wi-Fi frequency band, and the second frequency band may be a GPS frequency band.

[0199] In a specific implementation, when the operating frequency bands of antenna A1 and antenna A2 both include the 2.4G WIFI band, the 2.4G WIFI coverage of the dual antennas can effectively improve the throughput of WIFI communication.

[0200] In conjunction with the description of Figures 7-16. In some embodiments, for antenna A2, a corresponding grounding point can also be set on the metal Deco, so that the direction of the transverse mode current on the metal Deco is the same as the direction of the current on the radiator 12, avoiding the influence of the metal Deco on the operation of the radiator 12. In addition, settings corresponding to points 31, 32, and 33 in the above example can be made on the metal Deco to improve the radiation performance of antenna A2. The specific settings can be referred to the above description. No further details will be given here.

[0201] For example, three grounding points as shown in FIG16 are set on the metal Deco to improve the radiation performance of the antenna A1, the lateral mode of the metal Deco is used to cover the second frequency band, and the operating frequency band of the antenna A2 also includes the second frequency band.

[0202] It is understandable that since Metal Deco is close to both antenna A1 and antenna A2, the radiation enhancement effect of Metal Deco can act on both antennas at the same time.

[0203] (such as the first frequency band and / or the second frequency band), a problem of poor isolation may occur, thereby affecting the radiation performance of the two antennas in the corresponding frequency bands.

[0204] To this end, in an embodiment of the present application, the transverse mode of Metal Deco can be tuned to a 1 / 2 wavelength mode to reduce the mutual influence between the two antennas.

[0205] It can be understood that when the transverse mode excites the 1 / 2 wavelength mode, the maximum current point of this transverse mode can be close to the location of the top antenna feed (i.e., feed F2 of antenna A2). Feed F2 of antenna A2 can correspond to the maximum current point of antenna A2. When the maximum current points of two modes (such as the transverse mode on Metal Deco and the mode excited on antenna A2 to cover the same frequency band) are close to each other, the mutual interference between the two modes can be effectively controlled.

[0206] For example, the lateral mode on the metal Deco is used to cover the first frequency band.

[0207] Referring to Figure 18, the isolation simulation between Antenna A1 and Antenna A2 is shown when both use a 1 / 2 wavelength mode to cover the first frequency band, and when both use a 1 / 4 wavelength mode to cover the first frequency band. The 1 / 2 wavelength mode can be a 1 / 2 wavelength mode for transverse current. Since Metal Deco is used to enhance the radiation performance of Antenna A1, in this embodiment of the application, the transverse mode radiation of Metal Deco is also included in the radiation of Antenna A1.

[0208] As shown in Figure 18, when Antenna A1 and Metal Deco cover the 2.4 GHz Wi-Fi band using a quarter-wavelength mode, and Antenna A2 covers the 2.4 GHz Wi-Fi band using a quarter-wavelength mode, the dual-port isolation between Antenna A1 and Antenna A2 is poor, with the worst point approaching -8 dB. This results in significant interference between the two.

[0209] When Metal Deco uses a 1 / 2 wavelength mode to cover the 2.4 GHz Wi-Fi band, and Antenna A2 uses a 1 / 2 wavelength mode to cover the 2.4 GHz Wi-Fi band, the dual-port isolation between Antenna A1 and Antenna A2 is good, with the worst point being less than -15 dB. Therefore, there is no significant interference when the two antennas operate simultaneously.

[0210] It is understandable that when antenna A2 covers the first frequency band with a 1 / 4 wavelength, and the transverse mode on Metal Deco is a 1 / 2 wavelength mode, the two modes have different current distributions, resulting in better isolation and lower mutual interference.

[0211] In summary, in this embodiment of the present application, by properly positioning point 33 on the metal Deco, the metal Deco can cover either the first or second frequency band using a 1 / 2 wavelength mode. This ensures isolation between antennas A1 and A2, thereby improving the radiation performance of the entire antenna system.

[0212] Therefore, through the description of Figures 7 to 18 above, the antenna solution provided in the embodiment of the present application can avoid the influence of the metal Deco on the antenna when it is set close to the antenna by setting at least one grounding point (such as at least one of points 31 to 33) on the metal Deco. In addition, by setting the at least one grounding point, the longitudinal 1 times wavelength mode and / or the transverse 1 / 2 wavelength mode (or transverse 1 / 4 wavelength mode) on the metal Deco can also be stimulated to improve the radiation performance of the original antenna. This solution can also be applied to an antenna system including multiple border antennas. By controlling the transverse mode on the metal Deco to operate in the 1 / 2 wavelength mode, the isolation between adjacent antennas is optimized, so that the entire antenna system obtains better radiation performance.

[0213] As an example, as shown in Figure 19, when the antenna solution provided in an embodiment of the present application (i.e., the Metal Deco grounding solution) is applied to an antenna system including antenna A1 and antenna A2, the frequency bands covered by antenna A1 and antenna A2 may at least partially overlap. Antenna A1 and antenna A2 may be located on two vertical edges adjacent to the Metal Deco.

[0214] In this example, points 31, 32, and 33 can be set on the metal Deco. Any one or more of points 31, 32, and 33 can be provided with a matching circuit with the reference ground. Point 31 can be used to excite the longitudinal 1-wavelength current on the side of the metal Deco close to the antenna A1, thereby achieving the excitation of the same-direction current at the position on the metal Deco corresponding to the radiator 11 of the antenna A1. Point 32 can be used to tune the ground position of the longitudinal 1-wavelength current, so that the longitudinal 1-wavelength current can cover or partially cover the first frequency band and / or the second frequency band. Point 33 can be used to excite the transverse 1 / 2 wavelength mode, which is used to cover or partially cover the first frequency band and / or the second frequency band. In this way, the metal Deco can radiate as part of the antenna A1. Therefore, by setting points 31 to 33 on the metal Deco, the metal Deco can be included in the antenna A1 in terms of logical division. That is, the radiator of the antenna A1 includes the radiator 11 and the metal Deco.

[0215] Combined with the description of Figures 17-19 above, the horizontal half-wavelength corresponding to point 33 can improve the isolation between Antenna A1 and Antenna A2. Therefore, even if Antenna A2's operating frequency band includes the horizontal half-wavelength coverage band on Metal Deco, the isolation between Antenna A1 and Antenna A2 can be well controlled.

[0216] As a comparison, the following is a comparative description of the effects between the technical solution provided in the embodiment of the present application and the conventional design in conjunction with Figures 20-22. Take the solution provided in the embodiment of the present application as an example using the design shown in Figure 19. The existing design may correspond to the design shown in Figure 5 or Figure 6. In the system efficiency simulation, an exemplary description is given by comparing the efficiency of the first frequency band (i.e., the 2.4G WIFI band).

[0217] Refer to Figure 20, which shows a simulation of the current on Metal Deco during operation of the solution provided in an embodiment of the present application. Darker colors indicate stronger currents.

[0218] As shown in Figure 20, the longitudinal current on the Metal Deco exhibits a 1-wavelength distribution. The current flowing through the frame antenna is in the same direction as the current flowing along the edge of the Metal Deco. Low current points along the edge of the Metal Deco correspond to high current points along the frame, indicating EH electromagnetic coupling. The transverse current on the Metal Deco exhibits a 1 / 2 wavelength distribution, with high current points coinciding with those on the frame antenna (e.g., Antenna A2), indicating HH magnetic coupling.

[0219] Refer to Figure 21, which shows a comparison of current distribution between the solution provided by the embodiment of the present application and a conventional design. Both have the same measurement range. Darker colors indicate stronger currents.

[0220] As shown in Figure 21, in the conventional design, the current on the decorative element is generally weak. Moreover, the direction of the current on the side of the metal Deco close to the antenna A1 is opposite to the direction of the current on the antenna A1.

[0221] Correspondingly, in the solution provided in the embodiment of the present application, a strong current is distributed on the metal Deco, which can support the metal Deco to effectively radiate in the longitudinal mode and the transverse mode.

[0222] Referring to Figure 22, a schematic diagram of system efficiency simulation between the solution provided by the embodiment of the present application and a conventional solution is shown. In the example of Figure 22, an efficiency comparison under hand model scenarios (such as left hand model and right hand model) is also provided.

[0223] As shown in Figure 22, a simulation example of a free space (FS) scenario shows that the efficiency peak in the solution provided by the embodiment of this application is close to -3dB. In contrast, the efficiency peak in the conventional design is only -5dB. The -6dB bandwidth of the solution provided by this application is also significantly higher than that of the conventional design.

[0224] As shown in Figure 22, a simulation example of the right-hand mode scenario. The peak efficiency of the right-hand mode of the solution provided by this application reaches -8dB. Correspondingly, the peak efficiency of the right-hand mode in the conventional design is less than -10dB. In addition, in terms of the right-hand mode efficiency bandwidth, the bandwidth of the solution provided by this application is significantly higher than that of the conventional design. Combined with the free space simulation results in Figure 21, the difference in the right-hand mode reduction is compared. In this application, the peak reduction is less than 5dB, while the peak reduction of the corresponding conventional design exceeds 5dB.

[0225] For example, the simulation example of the left-hand mode scenario in Figure 22. The peak efficiency of the right-hand mode of the solution provided by this application reaches -6dB. In contrast, the peak efficiency of the left-hand mode in the conventional design is less than -8dB. In addition, in terms of the left-hand mode efficiency bandwidth comparison, the bandwidth of the solution provided by this application is significantly higher than that of the conventional design. Combined with the free-space simulation results in Figure 21, the difference in the reduction of the left-hand mode is compared. In this application, the peak reduction is less than 3dB, while the peak reduction of the corresponding conventional design exceeds 3dB.

[0226] Based on the simulation results in Figure 22, the solution provided by this application achieves higher peak efficiency and smaller hand mode dropout compared to conventional designs. In other words, the radiation performance of the solution shown in Figure 19 is significantly superior to that of conventional designs. It is understood that, in conjunction with the aforementioned principle explanation, similar beneficial effects can be achieved in other implementations of this application, and will not be further elaborated here.

[0227] It should be noted that in the co-frequency or adjacent-frequency dual-antenna design as shown in FIG19 , the correlation between the amplitudes of received signals between different antenna units can usually be characterized by the Envelop Correlation Coefficient (ECC).

[0228] The solution provided in this embodiment, combined with the description in Figure 17, improves the isolation between Antenna A1 and Antenna A2 by exciting a transverse half-wavelength mode on the metal Deco. Figure 23 shows a comparison of ECC simulations of this solution and a conventional design. Continuing with the first frequency band (2.4GHz Wi-Fi band), this example is used.

[0229] In conventional designs, ECC increases significantly in high-efficiency frequency bands (such as around 2.5 GHz), indicating that the mutual influence between the two antennas increases significantly in this frequency band.

[0230] Correspondingly, in the solution provided by this application, the ECC remains below 0.1 across the entire 2.4G WiFi frequency band. This indicates that the two antennas have good independent working capabilities. The operation of either antenna is basically unaffected by the other.

[0231] In other embodiments of the present application, in addition to any possible implementation as shown in Figures 7-23 above, an independent feed source can also be set on the Metal Deco to facilitate independent radiation of the Metal Deco to cover a third frequency band different from the first frequency band or the second frequency band.

[0232] For example, see Figure 24. A feed source F3 can be provided on the Metal Deco. This feed source F3 can be used to excite the Metal Deco to operate in a third frequency band. This third frequency band can correspond to the area of ​​the Metal Deco. The larger the area of ​​the Metal Deco, the lower the frequency of the third frequency band. Conversely, the smaller the area of ​​the Metal Deco, the higher the frequency of the third frequency band.

[0233] In some embodiments of the present application, a matching circuit may be provided between feed source F3 and Metal Deco to tune the third frequency band. This matching circuit design can also better preserve the boundary conditions corresponding to any of the aforementioned grounding points 31-33, allowing Metal Deco to radiate the third frequency band without significantly affecting the transverse and longitudinal modes described in the aforementioned examples.

[0234] As a possible implementation, take the example of setting the feed source F3 at the position of high current of Metal Deco. The matching circuit between the feed source F3 and Metal Deco may include a small parallel inductor. The inductance of the small inductor may not exceed 10nH. The setting of the small parallel inductor can be used to design the boundary conditions without destroying the original large current point. In other implementations, the matching circuit between the feed source F3 and Metal Deco may also include other forms of LC circuits. The embodiments of the present application do not limit the specific components in the matching circuit.

[0235] As another possible implementation, consider setting feed F3 at the location of the metal deco's high electric field. The matching circuit between feed F3 and the metal deco can include a parallel capacitor. This parallel capacitor can be used to design the boundary conditions without destroying the original high electric field point.

[0236] Thus, based on the descriptions of Figures 7-24 above, those skilled in the art should be able to gain a detailed and clear understanding of the technical solutions provided in the embodiments of this application. In the specific implementation process, the overall radiation performance of the antenna can be improved by reasonably selecting the grounding point on the metal deco according to the various implementations provided in the above solutions.

[0237] It should be noted that in the above examples, the description is made by taking the example of a metal Deco having a rectangular appearance and being arranged in the upper left corner of the back view of an electronic device. Those skilled in the art should understand that this solution can also be applied accordingly in the design of other metal Decos. For example, the appearance of the metal Deco may also include a rectangular appearance with a central design as shown by 61 in Figure 25. For another example, the appearance of the metal Deco may also include a circular or elliptical appearance with a central design as shown by 62 in Figure 25. The specific implementation on different metal Decos can refer to the description in the above examples, and the effects that can be achieved are similar, so they will not be repeated here.

[0238] The above content is only a specific embodiment of this application, but the scope of protection of this application is not limited to this. Any changes or replacements within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A terminal antenna, characterized in that: The terminal antenna is arranged in the electronic device, The antenna comprises: a first radiator and a second radiator, A first feeding point and a first grounding point are respectively provided at two ends of the first radiator, and at least one grounding point is provided on the second radiator; The first feeding point is coupled to a first feed source, and the first grounding point and at least one grounding point on the second radiator are respectively coupled to a reference ground; When the antenna is working, a first current is distributed on the first radiator; A second current is distributed in a first area on the second radiator; the first area is on a side of the second radiator close to the first radiator, and the first area corresponds to an area projected by the first radiator onto the second radiator; The first current and the second current have the same direction.

2. The antenna according to claim 1, characterized in that The electronic device has a metal frame structure. The first radiator reuses at least a portion of a metal frame of the electronic device, and the second radiator reuses a metal decorative part in the electronic device.

3. The antenna according to claim 1 or 2, characterized in that: The minimum distance between the first radiator and the second radiator does not exceed 15 mm.

4. The antenna according to any one of claims 1 to 3, characterized in that: The at least one grounding point on the second radiator includes a second grounding point, and the second grounding point is arranged in the first area.

5. The antenna according to claim 4, characterized in that: The first feeding point and the first grounding point are respectively arranged at two ends of the first radiator, including: the first end of the first radiator is arranged at the first grounding point; The second grounding point is set in the first area, including: the second grounding point corresponds to the projection position of the first end of the first radiator in the first area.

6. The antenna according to any one of claims 1 to 5, characterized in that: The operating frequency band of the first antenna includes a first frequency band; The at least one grounding point on the second radiator includes a third grounding point; The first feeding point and the first grounding point are respectively arranged at two ends of the first radiator, including: the first end of the first radiator is arranged with the first grounding point; the projection position of the first end of the first radiator in the first area is the first position; The distance between the third ground point and the first straight line corresponds to 1 / 2 wavelength of the first frequency band; The first straight line passes through the first position, and the first straight line is perpendicular to a straight line where the first radiator is located.

7. The antenna according to claim 5 or 6, characterized in that: When the antenna is working, the first radiator works in a first frequency band, and the second radiator has a third current distributed on a side close to the first radiator, the third current includes the second current, and the third current is used to excite a 1 times wavelength mode covering the first frequency band on the second radiator.

8. The antenna according to claim 7, characterized in that: The straight line where the third current on the second radiator is located is parallel to the straight line where the first current on the first radiator is located.

9. The antenna according to any one of claims 1 to 8, characterized in that: The operating frequency band of the first antenna includes a second frequency band; At least one grounding point is provided on the second radiator, including: a fourth grounding point is provided on the second radiator; The first feeding point and the first grounding point are respectively arranged at two ends of the first radiator, including: the first end of the first radiator is arranged with the first grounding point; the projection position of the first end of the first radiator in the first area is the first position; The distance between the fourth ground point and the second straight line corresponds to 1 / 2 wavelength or 1 / 4 wavelength of the second frequency band; The second straight line passes through the first position, and the first straight line is parallel to a straight line where the first radiator is located.

10. The antenna according to any one of claims 1 to 9, characterized in that: The second radiator is also provided with a second feeding point, and the second feeding point is coupled to the second feed source. The second feed source is used to feed a signal to the second radiator through the second feeding point, so that the second radiator operates in a third frequency band.

11. An antenna system, characterized in that: The antenna system is applied to electronic equipment, The antenna system comprises a first antenna and a second antenna, wherein the first antenna is a terminal antenna provided in any one of claims 1 to 10; The working frequency bands of the antenna system include a first frequency band, a second frequency band and a third frequency band; The first radiator and the second radiator of the first antenna are used to cover the first frequency band; The second radiator of the first antenna and the second antenna are used to cover the second frequency band; The second radiator of the first antenna is also used to cover the third frequency band.

12. The antenna system according to claim 11, characterized in that The second radiator of the first antenna includes a fourth grounding point, The first end of the first radiator of the first antenna is provided with the first grounding point; the projection position of the first end of the first radiator in the first area is the first position; the first area is on the second radiator, close to the side of the first radiator, and the first area corresponds to the area where the first radiator is projected onto the second radiator; The distance between the fourth ground point and the second straight line corresponds to 1 / 2 wavelength of the second frequency band; The second straight line passes through the first position, and the first straight line is parallel to a straight line where the first radiator is located.

13. The antenna system according to claim 11 or 12, characterized in that: The electronic device has a metal frame structure, the first radiator of the first antenna reuses at least a portion of the metal frame on the first side of the electronic device, the radiator of the second antenna reuses at least a portion of the metal frame on the second side of the electronic device, and the first side and the second side are two adjacent sides.

14. The antenna system according to claim 13, characterized in that The minimum distance from the second radiator of the first antenna to the first side or the second side does not exceed 15 mm.

15. An electronic device, characterized in that: The electronic device is provided with at least one processor, a radio frequency module, and a terminal antenna according to any one of claims 1 to 10, and / or an antenna system according to any one of claims 11 to 14; When transmitting or receiving a signal, the electronic device transmits or receives the signal through the radio frequency module and the terminal antenna and / or the antenna system.

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