Electronic device

Abstract

The present application discloses an electronic device, comprising: a metal frame. The metal frame is provided with a first antenna branch, a second antenna branch and a third antenna branch, a first fracture is arranged between the first antenna branch and the second antenna branch, and a second fracture is arranged between the second antenna branch and the third antenna branch; the first antenna branch is provided with a first feed structure, the second antenna branch is provided with a second feed structure and a third feed structure, and the third antenna branch is provided with a fourth feed structure; the first feed structure is connected to a feed network corresponding to a first cellular network, the second feed structure is separately connected to a feed network corresponding to a first satellite antenna and a feed network corresponding to a second satellite antenna, and the fourth feed structure is connected to a feed network corresponding to a second cellular antenna; and the difference between the length of the second antenna branch and the half of the wavelength corresponding to the working frequency of the first satellite antenna is smaller than a first value, the first value being smaller than one quarter of the wavelength corresponding to the working frequency of the first satellite antenna.

Description

electronic devices

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese Patent Application No. 202410348083.7 filed in China on March 26, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application belongs to the field of communication technology, and specifically relates to an electronic device. Background Art

[0004] With the advancement of communications technology, satellite communication systems are gradually being incorporated into electronic devices such as mobile phones. As the number of communication antennas increases, calls between satellite and cellular communication systems become more complex. In related technologies, electronic devices using dual-satellite systems can only achieve good performance with one satellite system, while the other achieves poor performance. Summary of the Invention

[0005] The present application aims to provide an electronic device that at least solves the problem in the related art that the electronic device of a dual-satellite system can only achieve good performance for one satellite system while the performance of the other satellite system is poor.

[0006] In a first aspect, an embodiment of the present application provides an electronic device, including a metal frame, wherein the metal frame is provided with a first antenna branch, a second antenna branch, and a third antenna branch, wherein a first break is formed between the first antenna branch and the second antenna branch, and a second break is formed between the second antenna branch and the third antenna branch;

[0007] The first antenna branch is provided with a first feeding structure, the second antenna branch is provided with a second feeding structure and a third feeding structure, and the third antenna branch is provided with a fourth feeding structure. The first feeding structure is connected to a first feeding network, the second feeding structure is connected to a second feeding network and a third feeding network respectively, and the fourth feeding structure is connected to a fourth feeding network. The first feeding structure is used to excite the first antenna branch to operate in the operating frequency band of the first cellular antenna, the second feeding network is used to excite the second antenna branch to operate in the operating frequency band of the first satellite antenna, the third feeding network is used to excite the second antenna branch to operate in the operating frequency band of the second satellite antenna, and the fourth feeding network is used to excite the third antenna branch to operate in the operating frequency band of the second cellular antenna.

[0008] The difference between the length of the second antenna branch and half of the wavelength corresponding to the operating frequency of the first satellite antenna is less than a first value, and the first value is less than a quarter of the wavelength corresponding to the operating frequency of the first satellite antenna; the operating frequency band of the first satellite antenna is between the uplink operating frequency band of the second satellite antenna and the downlink operating frequency band of the second satellite antenna.

[0009] In the embodiments of the present application, by rationally designing the structures of each cellular antenna and satellite antenna, and designing the operating frequency bands of the first satellite antenna and the second satellite antenna, so that the operating frequency band of the first satellite antenna is between the uplink operating frequency band and the downlink operating frequency band of the second satellite antenna, and by ensuring that the difference between the length of the antenna branch connected to the satellite antenna feed network and half of the wavelength corresponding to the operating frequency of the first satellite antenna is less than a certain value, it is possible to well ensure that both the first satellite antenna and the second satellite antenna achieve good radiation efficiency, thereby achieving good performance of both dual-satellite systems.

[0010] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0012] FIG1 is a schematic diagram of the overall structure of an electronic device according to an embodiment of the present application;

[0013] FIG2 is a schematic diagram of a partial structure of an electronic device according to an embodiment of the present application;

[0014] FIG3 is a schematic diagram of an antenna structure in an electronic device according to an embodiment of the present application;

[0015] FIG4 is a schematic diagram of a feeding structure in an antenna structure of an electronic device according to an embodiment of the present application;

[0016] FIG5 is a schematic diagram of current on a second antenna branch when the first satellite antenna is operating according to an embodiment of the present application;

[0017] 6 is a schematic diagram of antenna resonance generated by tuning the second feeding structure through the matching circuit when the second satellite antenna according to an embodiment of the present application is in operation;

[0018] FIG7 is a schematic diagram of a radio frequency architecture of an electronic device according to an embodiment of the present application;

[0019] FIG8 is a directivity diagram of uplink and downlink operating frequencies of the first satellite antenna and the second satellite antenna according to an embodiment of the present application. DETAILED DESCRIPTION

[0020] The embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0021] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly refer to one or more of the features. Throughout the description of this application, unless otherwise specified, "plurality" means two or more. Furthermore, "and / or" in the specification and claims refers to at least one of the connected entities, and the character " / " generally indicates an "or" relationship between the connected entities.

[0022] In the description of this application, it should be understood that the terms "center", "length", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0023] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0024] According to relevant technologies, traditional external satellite antennas are not suitable for today's full-screen metal-shell smart terminals. How to achieve high-performance built-in satellite antennas to meet the needs of smart terminal satellite communications is a major challenge. The following describes an electronic device according to an embodiment of the present application with reference to Figures 1 to 8.

[0025] As shown in Figures 1 to 3, electronic device 10 according to some embodiments of the present application includes a metal frame 101, on which a first antenna branch 11, a second antenna branch 12, and a third antenna branch 13 are provided. A first break 201 is defined between first antenna branch 11 and second antenna branch 12, and a second break 202 is defined between second antenna branch 12 and third antenna branch 13.

[0026] As shown in Figure 3, a first feeding structure 301 is provided on the first antenna branch 11, a second feeding structure 302 and a third feeding structure 303 are provided on the second antenna branch 12, and a fourth feeding structure 304 is provided on the third antenna branch 13. The first feeding structure 301 is connected to a first feeding network, the second feeding structure 302 is respectively connected to the second feeding network and the third feeding network, and the fourth feeding structure 304 is connected to a fourth feeding network. The first feeding network is used to excite the first antenna branch 11 to operate in the operating frequency band of the first cellular antenna, the second feeding network is used to excite the second antenna branch 12 to operate in the operating frequency band of the first satellite antenna, the third feeding network is used to excite the second antenna branch 12 to operate in the operating frequency band of the second satellite antenna, and the fourth feeding network is used to excite the third antenna branch 12 to operate in the operating frequency band of the second cellular antenna.

[0027] The difference between the length of the second antenna branch 12 and half of the wavelength corresponding to the operating frequency of the first satellite antenna is less than a first value, and the first value is less than a quarter of the wavelength corresponding to the operating frequency of the first satellite antenna; the operating frequency band of the first satellite antenna is between the uplink operating frequency band of the second satellite antenna and the downlink operating frequency band of the second satellite antenna.

[0028] The electronic devices in the embodiments of the present application may be provided with wireless circuitry / wireless communication circuitry. The wireless circuitry may be used to support wireless communications in multiple wireless communication frequency bands. The communication frequency bands handled by the wireless circuitry may include satellite navigation system, satellite communication frequency bands, cellular telephone communication frequency bands, wireless local area network communication frequency bands, near-field communication frequency bands, ultra-wideband communication frequency bands, or other wireless communication frequency bands. The electronic devices in the embodiments of the present application may be portable electronic devices or other electronic devices.

[0029] As shown in FIG1 , the electronic device at least includes a metal frame 101 , a floor 102 , a mainboard 104 , a speaker 105 , a satellite communication module, a cellular communication module, and a display module such as a display screen 103 .

[0030] At least two breaks are provided on the metal frame 101, such as a first break 201 and a second break 202. The floor 102 is connected to the metal frame 101 at multiple locations. Slots 203 are provided between the floor 102 and the metal frame 101 in the vicinity of the first break 201 and the second break 202. The first break 201 and the second break 202 cut the metal frame 101 into three sections in the slot 203 area, namely the first antenna branch 11, the second antenna branch 12 and the third antenna branch 13, as shown in FIG3 , where the length of the first antenna branch on the left is L1, the length of the second antenna branch in the middle is L2, and the length of the third antenna branch on the right is L3.

[0031] A first feeding structure 301 is provided on the first antenna branch 11 on the left. This feeding structure can be connected to a cellular antenna feed network, namely the first feeding network, so that the first antenna branch 11 can operate as a first cellular antenna; a second feeding structure 302 and a third feeding structure 303 are provided on the second antenna branch 12 in the middle. The second feeding structure 302 can be connected to the feed networks of two satellite communication antennas, namely the second feeding network and the third feeding network, so that the second antenna branch 12 can operate as a first satellite antenna or a second satellite antenna, and the third feeding structure 303 can be used as a satellite antenna adjustment point structure for adjusting the circular polarization performance of the satellite antenna; a fourth feeding structure 304 is provided on the third antenna branch 13 on the right. This feeding structure can be connected to another cellular antenna feed network, namely the fourth feeding network.

[0032] The difference between the length L2 of the second antenna branch 12 and half the wavelength corresponding to the operating frequency of the first satellite antenna is less than a certain value, and the difference does not exceed one-quarter of the wavelength corresponding to the operating frequency of the first satellite antenna. That is, L2 may be between one-quarter and three-quarters of the wavelength corresponding to the operating frequency of the first satellite antenna. In some embodiments, the length L2 of the second antenna branch 12 may be close to one-half the wavelength of the operating frequency of the first satellite antenna (that is, half the wavelength of the medium operating in the terminal environment). The operating frequency band of the first satellite antenna may be between the uplink operating frequency band of the second satellite antenna and the downlink operating frequency band of the second satellite. More specifically, the operating frequency band of the first satellite antenna may be between the uplink and downlink operating frequency bands of the second satellite antenna. Accordingly, the electrical length of the first satellite antenna is also between the uplink and downlink operating frequency bands of the second satellite antenna. The operating frequency band of the first satellite antenna is also the first satellite operating frequency band, and the operating frequency band of the second satellite antenna is also the second satellite operating frequency band. In this way, the electrical length of the second antenna branch 12 can ensure that the first satellite frequency band achieves good radiation efficiency while also achieving good radiation efficiency for both uplink and downlink of the second satellite frequency band.

[0033] In some embodiments, the first feeding structure 301 may be disposed on the first antenna branch 11 at a position close to the first break 201 , the distance from the first break 201 not exceeding one quarter of the wavelength corresponding to the operating frequency of the first satellite antenna.

[0034] Optionally, the first feeding structure 301 is provided on the first antenna branch 11 at an edge of the first break 201 .

[0035] In some embodiments, in order to obtain better antenna performance, the first feeding structure 301 may be disposed on the edge of the first antenna branch 11 close to the first break 201 .

[0036] Optionally, the second feeding structure 302 is provided at a first position of the second antenna branch 12, and a distance from the first position to the first break 201 is less than or equal to a length of the first antenna branch 11;

[0037] And / or, the third feeding structure 303 is provided at a second position on the second antenna branch 12 , and a distance from the second position to a midpoint of the second antenna branch 12 is less than or equal to a quarter of the length of the second antenna branch 12 .

[0038] In some embodiments, as shown in FIG. 3 , the second feeding structure 302 may be disposed at a first position of the second antenna branch 12 , and a distance L4 from the first position to the first break 201 does not exceed a length L1 of the first antenna branch 11 .

[0039] The third feeding structure 303 may be disposed at a second position on the second antenna branch 12 close to the second break 202 , and a distance L5 from this position to the midpoint of the second antenna branch 12 is no more than a quarter of the length L2 of the second antenna branch 12 .

[0040] In this way, it can be ensured that the dual satellite antennas of the electronic device have strong directivity and can both obtain strong radiation efficiency.

[0041] Optionally, the fourth feeding structure 304 is provided at a third position of the third antenna branch 13, and a distance from the third position to the second break 202 is less than or equal to a quarter of the wavelength corresponding to the operating frequency of the first satellite antenna.

[0042] In some embodiments, as shown in FIG3 , the fourth feed structure 304 can be disposed at a third position of the third antenna branch 13, with a distance L6 from this position to the second break 202 no greater than one-quarter of the wavelength corresponding to the operating frequency of the first satellite antenna. The third feed structure 303 and the fourth feed structure 304 are disposed on either side of the speaker 105.

[0043] In this way, it can be further ensured that the dual satellite antennas of the electronic device obtain stronger radiation efficiency.

[0044] Optionally, the uplink operating frequency band of the first satellite antenna is 1.98 GHz to 2.01 GHz, and the downlink operating frequency band of the first satellite antenna is 2.17 GHz to 2.2 GHz;

[0045] The uplink operating frequency band of the second satellite antenna is 1615.68±7 MHz, and the downlink operating frequency band of the second satellite antenna is 2491.75±5 MHz.

[0046] In some embodiments, the first satellite antenna can operate in the working frequency band corresponding to the first satellite, and the specific uplink frequency band and downlink frequency band are 1.98GHz~2.01GHz and 2.17GHz~2.2GHz respectively. The second satellite antenna operates in the working frequency band corresponding to the second satellite, and the specific uplink frequency band and downlink frequency band are 1615.68±7MHz and 2491.75±5MHz respectively. In this way, the working frequency band of the first satellite is in the middle of the uplink and downlink working frequency bands of the second satellite. This design can ensure that the electrical length of the second antenna branch 12 can enable the first satellite antenna to obtain better radiation efficiency in its working frequency band, while taking into account that the second satellite antenna obtains better radiation efficiency in both its uplink and downlink frequency bands.

[0047] Optionally, as shown in FIG4 , the first feeding structure 301 is connected to a plurality of first tuning branches through a first antenna tuning switch SW1, a fixed end of the first antenna tuning switch SW1 is connected to the first feeding structure 301, a plurality of movable ends of the first antenna tuning switch SW1 are connected to the plurality of first tuning branches in a one-to-one correspondence, and a first feeding network 401 is connected to one of the first tuning branches;

[0048] And / or, the second feeding structure 302 is connected to a plurality of second tuning branches via a second antenna tuning switch SW2, a fixed end of the second antenna tuning switch SW2 is connected to the second feeding structure 302, a plurality of movable ends of the second antenna tuning switch SW2 are connected one-to-one to the plurality of second tuning branches, and at least one of the second tuning branches is connected to the second feeding network 402, and another second tuning branch is connected to the third feeding network 403;

[0049] and / or, the third feeding structure 303 is connected to a plurality of third tuning branches via a third antenna tuning switch SW3, a fixed end of the third antenna tuning switch SW3 is connected to the third feeding structure 303, and a plurality of movable ends of the third antenna tuning switch SW3 are connected to the plurality of third tuning branches in a one-to-one correspondence;

[0050] And / or, the fourth feeding structure 304 is connected to multiple fourth tuning branches through the fourth antenna tuning switch SW4, the fixed end of the fourth antenna tuning switch SW4 is connected to the fourth feeding structure 304, the multiple movable ends of the fourth antenna tuning switch SW4 are connected one-to-one to the multiple fourth tuning branches, and the fourth feeding network 404 is connected to one of the fourth tuning branches.

[0051] In some embodiments, a simplified framework diagram of each feeding structure is shown in FIG4 . The first feeding structure 301 , the second feeding structure 302 , the third feeding structure 303 , and the fourth feeding structure 304 may all be provided with an antenna tuning switch, namely SW1 , SW2 , SW3 , and SW4 , respectively. Each switch has multiple adjustment states and can be connected to capacitors, inductors, feed sources, or grounded, disconnected, and other state adjustments.

[0052] The first cellular antenna feed network, i.e., the first feed network 401, is connected to the first feed structure 301 via one of the switches SW1; the first satellite antenna feed network, i.e., the second feed network 402, is connected to the second feed structure 302 via at least one of the switches SW2; the second satellite antenna feed network, i.e., the third feed network 403, is connected to the second feed structure 302 via one of the switches SW2; and the second cellular antenna feed network, i.e., the fourth feed network 404, is connected to the fourth feed structure 304 via the switch SW4.

[0053] In this way, by laying out the feed network of the corresponding antenna on each feeding structure, the operating frequency band of each cellular and satellite antenna can be realized, and the antenna tuning switch can be used to switch different tuning branches to achieve tuning of the operating frequency band of each antenna, thereby ensuring the performance of each antenna band.

[0054] Optionally, as shown in FIG4 , one of the third tuning branches connected to the third antenna tuning switch SW3 is connected to a fifth feeding network 405 , and the fifth feeding network 405 is a feeding network corresponding to the third cellular antenna.

[0055] In some embodiments, the third feeding structure 303 can also be connected to the feeding network of the third cellular antenna, i.e., the fifth feeding network 405, through the second antenna tuning switch SW2, so that the second antenna branch 12 can also serve as the third cellular antenna and operate in the third cellular antenna operating frequency band, thereby enriching the antenna operating frequency band of the electronic device.

[0056] Optionally, as shown in Figure 4, the two second tuning branches connected to the second antenna tuning switch SW2 are both connected to the second feeding network 402, one of the second tuning branches is used to support the uplink operating frequency band of the first satellite antenna, and the other second tuning branch is used to support the downlink operating frequency band of the first satellite antenna.

[0057] That is, in some embodiments, when the uplink and downlink operating frequency bands of the first satellite antenna are relatively close, in order to tune the uplink and downlink operating frequency bands of the first satellite antenna, the second feeding network 402 can be connected to the second feeding structure 302 through the two tuning branches of the second antenna tuning switch SW, and these two branches act on the uplink frequency band and the downlink frequency band of the first satellite antenna respectively, that is, the uplink and downlink operating frequency bands of the first satellite antenna can be switched by switching the two branches.

[0058] In some embodiments, the second antenna tuning switch SW2 and the third antenna tuning switch SW3 are serial switches to ensure isolation between the first satellite antenna feed network and the second satellite antenna feed network, thereby improving the performance of the satellite antenna.

[0059] Optionally, each of the antenna tuning switches is a serial switch.

[0060] That is, in some embodiments, the first antenna tuning switch SW1, the second antenna tuning switch SW2, the third antenna tuning switch SW3 and the fourth antenna tuning switch SW4 can all adopt serial switches. In this way, when the feeding network of each cellular antenna and the feeding network of each satellite antenna are connected through the serial switch, the isolation of each feeding network port can be improved when the satellite is working or the cellular is working, and the mutual injection of energy can be avoided, thereby improving the performance of the satellite antenna.

[0061] It should be noted that, in the embodiment of the present application, the first satellite antenna and the second satellite antenna can work in a time-division manner with each cellular antenna.

[0062] Optionally, when the electronic device establishes a communication connection with the first satellite, the first antenna tuning switch SW1 connects at least one tuning branch of the multiple first tuning branches that is not connected to the first feeding network 401; the second antenna tuning switch SW2 connects the second tuning branch where the second feeding network 402 is located; the third antenna tuning switch SW3 connects at least one tuning branch of the multiple third tuning branches that is not connected to the antenna feeding network, or the third antenna tuning switch SW3 is in an off state; and the fourth antenna tuning switch SW4 connects at least one tuning branch of the multiple fourth tuning branches that is not connected to the fourth feeding network 404.

[0063] and / or, when the electronic device establishes a communication connection with the second satellite, the first antenna tuning switch SW1 connects at least one tuning branch of the plurality of first tuning branches that is not connected to the first feeding network 401; the second antenna tuning switch SW2 connects the second tuning branch where the third feeding network 403 is located; the third antenna tuning switch SW3 is in an off state; and the fourth antenna tuning switch SW4 connects at least one tuning branch of the plurality of fourth tuning branches that is not connected to the fourth feeding network 404;

[0064] And / or, when the electronic device is connected to a cellular network, the first antenna tuning switch SW1 connects to the first tuning branch where the first feeding network 401 is located; the second antenna tuning switch SW2 connects to the tuning branches of the multiple second tuning branches that are not connected to the second feeding network 402 and the third feeding network 403; and the fourth antenna tuning switch SW4 connects to the fourth tuning branch where the fourth feeding network 404 is located.

[0065] In an embodiment of the present application, the electronic device can access a cellular network or a satellite network according to actual scenarios or needs. Normally, the electronic device preferentially accesses the cellular network, that is, operates in the corresponding cellular antenna operating frequency band. In some cases, it can also access the satellite network according to usage needs, that is, establish a communication connection with the satellite and operate in the corresponding satellite antenna operating frequency band.

[0066] In some embodiments, when the electronic device establishes a communication connection with the first satellite, the first satellite is a satellite whose operating frequency band is the operating frequency band of the first satellite antenna, and the electronic device operates in the operating frequency band of the first satellite antenna. In this case, the first feeding structure 301 is connected to one or more switches other than the branch where the first feeding network 401 is located through the first antenna tuning switch SW1; the second feeding structure 302 is connected to the two branches where the second feeding network 402 is located through the second antenna tuning switch SW2 to switch the uplink and downlink frequency bands; the third feeding structure 303 is connected to one or more switches other than the branch where the fifth feeding network 405 is located through the third antenna tuning switch SW3, or the third antenna tuning switch All branches of SW3 are in a non-conducting state, and the specific state can be selected according to the circular polarization performance of the satellite antenna. Since the third feeding structure 303 is set at a distance L5 from the center line on one side of the center line, and L5 does not exceed one-quarter of L2, when the first satellite antenna is operating, the central current on the L2 branch is the largest and gradually decreases towards the left and right breaks, as shown in Figure 5. Therefore, whether the third feeding structure 303 is grounded or floating and disconnected has little effect on the efficiency and radiation performance of the satellite antenna, but can serve as an adjustment point for the circular polarization adjustment of the first satellite antenna. At the same time, when the first satellite antenna is operating, the fourth feeding structure 304 is connected to the ground through the fourth antenna tuning switch SW4. One or more branches other than the branch where the fourth feeding network 404 is located are connected to the ground.

[0067] In other embodiments, when the electronic device establishes a communication connection with a second satellite, the second satellite is a satellite whose operating frequency band is the operating frequency band of the second satellite antenna, and the electronic device operates in the operating frequency band of the second satellite antenna. In this case, the first feed structure 301 is connected to one or more switches other than the branch where the first feed network 401 is located via SW1 for grounding; the second feed structure 302 is connected to the branch where the third feed network 403 is located via SW2, which is connected to the second satellite chip (the chip is not shown in the figure on the main board); SW3 connected to the third feed structure 303 may be in a disconnected state at this time. Since the uplink and downlink operating frequencies of the second satellite antenna operating frequency band differ significantly and the bandwidth is relatively narrow, a matching network can be added to the branch where the third feed network 403 is located to tune the uplink and downlink resonances. The specific resonance diagram is shown in FIG6 ; simultaneously, when the second satellite antenna is operating, the fourth feed structure 304 is connected to one or more switches other than the branch where the fourth feed network 404 is located for grounding via SW4.

[0068] In some other embodiments, when the electronic device is connected to a cellular network, the electronic device operates in any cellular antenna operating frequency band. In this case, the first feeding structure 301 is connected to the branch where the first feeding network 401 is located via SW1. The other tuning branches on SW1 except the branch where the first feeding network 401 is located can be used as the matching network of the first cellular antenna to optimize performance or switch states, that is, to be used as the impedance adjustment of the first cellular antenna; the second feeding structure 302 is connected to one of the branches except the branches where the second feeding network 402 and the third feeding network 403 are located via SW2. The second cellular antenna is connected to the fourth feeding network 404 via one of the SW4 paths through the fourth feeding structure 304. In addition, when the fifth feeding network 405 is connected to the third feeding structure 303, the third cellular antenna is connected to the fifth feeding network 405 via one of the SW3 paths through the third feeding structure 303. At the same time, other matching network paths connected to SW3 can be used for tuning the second cellular antenna to achieve better antenna performance for the second cellular antenna, and other matching network paths connected to SW4 can be used for tuning the third cellular antenna to achieve better antenna performance for the third cellular antenna.

[0069] In this way, through the above embodiments, when each satellite antenna or cellular antenna is working, the appropriate feed network and matching circuit can be connected through each antenna tuning switch, thereby achieving compatibility between the dual satellite antennas and the cellular communication antenna, and enabling each antenna to obtain better performance.

[0070] Optionally, as shown in Figure 7, the electronic device further includes a switching switch 50; the fixed end of the switching switch 50 is connected to the control end of the second antenna tuning switch SW2, and the movable end of the switching switch 50 is respectively connected to the first satellite module 60 in the electronic device and the radio frequency module 70 where the cellular network is located. The second antenna tuning switch SW2 can be switched to be connected to the first satellite module 60 or to the radio frequency module 70 through the switching switch 50.

[0071] In some embodiments, considering that the satellite communication system and the cellular communication system are independent communication subsystems, the above-mentioned antenna tuning switch is in different states when the cellular and satellite are working, and it is difficult to accurately control the states of each switch. In order to solve this problem, this embodiment proposes a radio frequency architecture solution as shown in Figure 7 to solve the control problem of the antenna tuning switch.

[0072] As shown in FIG7 , the second antenna tuning switch SW2 can be connected to the first satellite module 60 and the RF module 70 of the electronic device through the conversion switch 50 , so that the second antenna tuning switch SW2 can be switched between being controlled by the first satellite module 60 and being controlled by the RF module 70 through the conversion switch 50 .

[0073] That is, the switch SW2 when the first satellite antenna is working is a switch controlled by the Mobile Industry Processor Interface (MIPI) signal. The SDR_RFFE_CLK and SDR_RFFE_DATA signals in the RF module 70 can be selected to perform independent read and write operations on SW2, or the SA_RFFE_CLK and SA_RFFE_DATA in the first satellite module 60 can be selected to perform independent read and write operations on SW2; however, the switch SW2 needs to be controlled by the satellite when the satellite is working and by the cellular when the cellular is working; in order to achieve that the switch SW2 can be controlled by the satellite and the cellular in a time-sharing manner; this embodiment proposes the architecture shown in Figure 7, the SDR_RFFE_CLK and SDR_RFFE_DATA in the RF module 70 A signal, SA_RFFE_CLK and SA_RFFE_DATA signals in the first satellite module 60 are connected to the double-pole four-throw switch 50, and then converted into com_RFFE_CLK and com_RFFE_DATA signals to perform read and write operations on SW2, switching different states (sending Tx and receiving Rx). It can be switched between the first satellite module 60 and the RF module 70 of the cellular network, and the control of the second antenna tuning switch SW2 by the cellular network or the control of the second antenna tuning switch SW2 by the first satellite module 60 can be realized; when the Tx and Rx of the second satellite module are working, SW1, SW3, and SW4 here may not be in the same RF front end (Radio On the RFFE (Frequency Front-End) network, not shown in Figure 7, SW1, SW3, and SW4 are all in the same fixed state when the first or second satellite antenna is operating. That is, the register values ​​in these switches are the same. The cellular network's RF module can write a value to the registers of these switches via RFFE_CLK and RFEE_DATA, allowing these switches to operate in a fixed state. This state does not change with the uplink or downlink switching of the first satellite antenna, or the switching between the first and second satellite antennas. For example, when the first and second satellite antennas are operating, SW1 is shorted to ground as a fixed state. Multiple RFFE networks can be used on the RF module to control these switches. The above settings meet the requirements for independent adjustment of other cellular antennas without adjusting the matching network when the satellite antenna is operating, and also meet the requirements for setting the state of the cellular antenna during satellite communication.

[0074] Here, the voltage of the second antenna tuning switch SW2 is provided by the power module 80 and is at a normally high level, which can ensure that the second antenna tuning switch SW2 can operate or remain in a certain state in any state, and ensure that both the cellular or satellite module can control it; and the MIPI signal conversion switch 50 is provided with a normally high level by the power module to ensure that it can operate or remain in a certain state in any state. By giving a high or low level to the SEL pin of the conversion switch 50, the com_RFFE_CLK and com_RFFE_DATA signals are implemented in the first satellite module 60 and the RF module 70 of the cellular network for MIPI signal switching, thereby realizing the control of the second antenna tuning switch SW2 by the cellular module or the control of the second antenna tuning switch SW2 by the first satellite module 60.

[0075] It is not difficult to see from the directivity diagram of the uplink and downlink operating frequencies of the first satellite antenna and the directivity diagram of the uplink and downlink operating frequencies of the second satellite antenna shown in Figure 8 that the directivity diagram of the uplink and downlink of the first satellite antenna has a consistent and strong radiation direction in the upper hemisphere, which can ensure that users have a better communication experience; the directivity diagram of the uplink and downlink of the second satellite antenna has a consistent and strong radiation direction in the upper hemisphere, which can ensure that users have a better communication experience.

[0076] The embodiment of the present application can realize the communication call between the dual satellite system and the cellular system, and realize the compatibility of the dual satellite antenna and the cellular communication antenna, so that both the dual satellite antenna and the cellular antenna can obtain better performance.

[0077] Optionally, the fixed end of the switching switch 50 is also connected to the control end of the third antenna tuning switch SW3 , and the third antenna tuning switch SW3 can be switched to connect to the first satellite module 60 or to connect to the RF module 70 through the switching switch 50 .

[0078] Similar to the above embodiments, in some embodiments, based on the RF framework shown in Figure 7, the MIPI signal of the third antenna tuning switch SW3 can be simultaneously connected to the com_RFFE_CLK and com_RFFE_DATA signals, so that SW3 and SW2 can be controlled by the cellular or the first satellite module 60, thereby achieving more precise adjustment of the first satellite antenna during uplink and downlink operation to obtain better performance.

[0079] This embodiment can further enhance the adjustment optimization of the first satellite antenna and improve the performance of the first satellite antenna.

[0080] Optionally, the second feeding structure 302 and / or the third feeding structure 303 are further connected to a circuit where a Specific Absorption Rate (SAR) sensor is located via a series capacitor.

[0081] In some embodiments, the second antenna branch 12 in the embodiment of the present application is connected to the ground through a switch path in conjunction with capacitors and inductors, and the branch itself is not directly connected to the ground plane 102, which facilitates the expansion of the SAR sensor. Only a series capacitor can be added to the circuit connected from the second feeding structure 302 and the third feeding structure 303 to the antenna tuning switch to connect to the SAR sensor network, thereby realizing the SAR sensor function (capable of detecting the exposure amount in electromagnetic radiation), capable of realizing SAR detection during satellite communication and SAR detection during cellular communication, and intelligently realizing power adjustment during communication in various scenarios, thereby improving user experience.

[0082] According to an embodiment of the present application, an electronic device includes a metal frame, the metal frame is provided with a first antenna branch, a second antenna branch and a third antenna branch, a first break is provided between the first antenna branch and the second antenna branch, and a second break is provided between the second antenna branch and the third antenna branch; a first feeding structure is provided on the first antenna branch, a second feeding structure and a third feeding structure are provided on the second antenna branch, and a fourth feeding structure is provided on the third antenna branch. The first feeding structure is connected to a first feeding network, the second feeding structure is respectively connected to a second feeding network and a third feeding network, and the fourth feeding structure is connected to a fourth feeding network. The first feeding structure is used to excite the first feeding structure. An antenna branch operates in the operating frequency band of the first cellular antenna, the second feed network is used to excite the second antenna branch to operate in the operating frequency band of the first satellite antenna, the third feed network is used to excite the second antenna branch to operate in the operating frequency band of the second satellite antenna, and the fourth feed network is used to excite the third antenna branch to operate in the operating frequency band of the second cellular antenna. The difference between the length of the second antenna branch and half the wavelength corresponding to the operating frequency of the first satellite antenna is less than a first value, and the first value is less than one-quarter the wavelength corresponding to the operating frequency of the first satellite antenna. The operating frequency band of the first satellite antenna is between the uplink operating frequency band of the second satellite antenna and the downlink operating frequency band of the second satellite antenna. Thus, by rationally designing the structures of the cellular antennas and satellite antennas, and designing the operating frequency bands of the first and second satellite antennas, such that the operating frequency band of the first satellite antenna is between the uplink and downlink operating frequency bands of the second satellite antenna, and by ensuring that the difference between the length of the antenna branch connected to the satellite antenna feed network and half the wavelength corresponding to the operating frequency of the first satellite antenna is less than a certain value, both the first and second satellite antennas can achieve good radiation efficiency, thereby achieving good performance for both the dual-satellite system.

[0083] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0084] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. An electronic device comprising a metal frame, wherein the metal frame is provided with a first antenna branch, a second antenna branch, and a third antenna branch, wherein a first break is defined between the first antenna branch and the second antenna branch, and a second break is defined between the second antenna branch and the third antenna branch; The first antenna branch is provided with a first feeding structure, the second antenna branch is provided with a second feeding structure and a third feeding structure, and the third antenna branch is provided with a fourth feeding structure. The first feeding structure is connected to a first feeding network, the second feeding structure is connected to a second feeding network and a third feeding network respectively, and the fourth feeding structure is connected to a fourth feeding network. The first feeding network is used to excite the first antenna branch to operate in the operating frequency band of the first cellular antenna, the second feeding network is used to excite the second antenna branch to operate in the operating frequency band of the first satellite antenna, the third feeding network is used to excite the second antenna branch to operate in the operating frequency band of the second satellite antenna, and the fourth feeding network is used to excite the third antenna branch to operate in the operating frequency band of the second cellular antenna. The difference between the length of the second antenna branch and half of the wavelength corresponding to the operating frequency of the first satellite antenna is less than a first value, and the first value is less than a quarter of the wavelength corresponding to the operating frequency of the first satellite antenna; the operating frequency band of the first satellite antenna is between the uplink operating frequency band of the second satellite antenna and the downlink operating frequency band of the second satellite antenna.

2. The electronic device according to claim 1, wherein The first feeding structure is arranged on the first antenna branch at an edge of the first break.

3. The electronic device according to claim 1, wherein The length of the second antenna branch is half of the wavelength corresponding to the operating frequency of the first satellite antenna; And / or, the second feeding structure is arranged at a first position of the second antenna branch, and a distance from the first position to the first break is less than or equal to a length of the first antenna branch; And / or, the third feeding structure is arranged at a second position on the second antenna branch, and a distance from the second position to a midpoint of the second antenna branch is less than or equal to one quarter of the length of the second antenna branch.

4. The electronic device according to claim 1, wherein The fourth feeding structure is arranged at a third position of the third antenna branch, and a distance from the third position to the second break is less than or equal to one quarter of a wavelength corresponding to an operating frequency of the first satellite antenna.

5. The electronic device according to claim 1, wherein The first feeding structure is connected to a plurality of first tuning branches via a first antenna tuning switch, a fixed end of the first antenna tuning switch is connected to the first feeding structure, a plurality of movable ends of the first antenna tuning switch are connected to the plurality of first tuning branches in a one-to-one correspondence, and one of the first tuning branches is connected to the first feeding network; And / or, the second feeding structure is connected to a plurality of second tuning branches via a second antenna tuning switch, a fixed end of the second antenna tuning switch is connected to the second feeding structure, a plurality of movable ends of the second antenna tuning switch are connected to the plurality of second tuning branches in a one-to-one correspondence, and at least one of the second tuning branches is connected to the second feeding network, and another second tuning branch is connected to the third feeding network; And / or, the third feeding structure is connected to a plurality of third tuning branches via a third antenna tuning switch, a fixed end of the third antenna tuning switch is connected to the third feeding structure, and a plurality of movable ends of the third antenna tuning switch are connected to the plurality of third tuning branches in a one-to-one correspondence; And / or, the fourth feeding structure is connected to multiple fourth tuning branches through a fourth antenna tuning switch, the fixed end of the fourth antenna tuning switch is connected to the fourth feeding structure, the multiple moving ends of the fourth antenna tuning switch are connected one-to-one to the multiple fourth tuning branches, and the fourth feeding network is connected to one of the fourth tuning branches. The electronic device according to claim 5 , wherein: A fifth feeding network is connected to one of the third tuning branches connected to the third antenna tuning switch. The fifth feeding network is a feeding network corresponding to the third cellular antenna.

7. The electronic device according to claim 5, wherein: The two second tuning branches connected to the second antenna tuning switch are both connected to the second feeding network, one of the second tuning branches is used to support the uplink operating frequency band of the first satellite antenna, and the other second tuning branch is used to support the downlink operating frequency band of the first satellite antenna.

8. The electronic device according to claim 5, wherein Each of the antenna tuning switches is a serial switch.

9. The electronic device according to claim 5, wherein When the electronic device establishes a communication connection with the first satellite, the first antenna tuning switch switches on at least one tuning branch of the plurality of first tuning branches that is not connected to the first feeding network; The second antenna tuning switch is connected to the second tuning branch where the second feeding network is located; The third antenna tuning switch is connected to at least one tuning branch of the plurality of third tuning branches that is not connected to the antenna feeding network, or the third antenna tuning switch is in an off state; The fourth antenna tuning switch turns on at least one tuning branch of the plurality of fourth tuning branches that is not connected to the fourth feeding network; and / or, when the electronic device establishes a communication connection with the second satellite, the first antenna tuning switch switches on at least one tuning branch of the plurality of first tuning branches that is not connected to the first feeding network; The second antenna tuning switch is connected to the second tuning branch where the third feeding network is located; The third antenna tuning switch is in an off state; The fourth antenna tuning switch turns on at least one tuning branch of the plurality of fourth tuning branches that is not connected to the fourth feeding network; and / or, when the electronic device is connected to a cellular network, the first antenna tuning switch switches on a first tuning branch where the first feeding network is located; The second antenna tuning switch turns on the tuning branches of the plurality of second tuning branches that are not connected to the second feeding network and are not connected to the third feeding network; The fourth antenna tuning switch switches on a fourth tuning branch where the fourth feeding network is located.

10. The electronic device according to claim 5, wherein The electronic device also includes a switching switch; the fixed end of the switching switch is connected to the control end of the second antenna tuning switch, and the movable end of the switching switch is respectively connected to the first satellite module and the radio frequency module where the cellular network is located in the electronic device. The second antenna tuning switch can be switched to connect to the first satellite module or to connect to the radio frequency module through the switching switch.

11. The electronic device according to claim 10, wherein: The fixed end of the conversion switch is also connected to the control end of the third antenna tuning switch. The third antenna tuning switch can be switched to be connected to the first satellite module or to the radio frequency module through the conversion switch.

12. The electronic device according to claim 1, wherein The second feeding structure and / or the third feeding structure are further connected to the circuit where the Specific Absorption Rate (SAR) sensor is located via a series capacitor.

13. The electronic device according to claim 1, wherein The uplink operating frequency band of the first satellite antenna is 1.98 GHz to 2.01 GHz, and the downlink operating frequency band of the first satellite antenna is 2.17 GHz to 2.2 GHz; The uplink operating frequency band of the second satellite antenna is 1615.68±7 MHz, and the downlink operating frequency band of the second satellite antenna is 2491.75±5 MHz.

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