Mobile terminal

Abstract

The mobile terminal comprises a first antenna system, a second antenna system, a first radiator and a second radiator, a tuning circuit of the first antenna system is coupled with the first radiator, and a tuning circuit of the second antenna system is coupled with the second radiator. When the second antenna system is in a transmitting time slot or a receiving time slot, the tuning state of the tuning circuit of the first antenna system is matched with the tuning state of the tuning circuit of the second antenna system, so that the first radiator and the second radiator can jointly excite to generate a signal of a transmitting frequency band or a receiving frequency band of the second antenna system. Therefore, by adopting the design scheme of the antenna system of the mobile terminal provided by the invention, the mutual assistance between the two antenna systems can be utilized to realize the improvement of the performance of the antenna system of which the communication system supports frequency division duplex and time division duplex at the same time, and the improvement of the communication performance of the mobile terminal is facilitated.

Description

Technical Field

[0001] This application relates to the field of electronic device technology, and more particularly to a mobile terminal. Background Technology

[0002] With the development of human society, mobile devices such as smartphones have become indispensable tools in people's lives. People's reliance on mobile devices has affected all aspects of their lives. With the rapid development of mobile communication technology and the widespread adoption of smartphones, people have increasingly higher demands for mobile devices, especially regarding their communication capabilities.

[0003] Antenna systems are a crucial component for mobile terminal communication, and their communication efficiency is key to the terminal's overall communication capabilities. Currently, antennas that simultaneously support signal transmission and reception excite resonances in both the transmission and reception bands during operation, meaning they must simultaneously handle both low and high frequencies. This results in relatively poor communication performance. Furthermore, the simultaneous excitation of two different frequency bands leads to different current distributions in the two resonators, resulting in inconsistent radiation patterns. This affects the antenna system's gain and beamwidth, thus impacting the mobile terminal's communication performance. Summary of the Invention

[0004] This application provides a mobile terminal for improving the communication performance of an antenna system, thereby enhancing the communication performance of the mobile terminal.

[0005] This application provides a mobile terminal, which includes a first antenna system, a second antenna system, a first radiator, and a second radiator. The first antenna system includes a first modem, a first radio frequency (RF) chip, a first RF front-end module, and a first tuning circuit. The first modem is coupled to the first RF chip, the first RF chip is coupled to the first tuning circuit through the first RF front-end module, and the first tuning circuit is coupled to the first radiator. In a specific configuration of the second antenna system, it may include a second modem and a second tuning circuit, with the second modem coupled to the second tuning circuit. Thus, when the second antenna system is in a transmit time slot, a first branch of the first tuning circuit is coupled to the first radiator, and a second branch of the second tuning circuit is coupled to the second radiator, thereby jointly exciting the first and second radiators to generate a signal in the transmit frequency band of the second antenna system. Furthermore, when the second antenna system is in a receive time slot, a third branch of the first tuning circuit is coupled to the first radiator, and a fourth branch of the second tuning circuit is coupled to the second radiator, so that the first and second radiators jointly exciting the signal in the receive frequency band of the second antenna system. By adopting the antenna system design scheme of the mobile terminal provided in this application, when the second antenna system is in the transmit and receive time slots, the tuning states of the first tuning circuit of the first antenna system and the second tuning circuit of the second antenna system are matched so that the first radiator and the second radiator can be jointly excited to generate resonance that meets the requirements of transmission and reception. In this way, the mutual assistance between the two antenna systems can realize the time-division excitation of the signal in the transmit frequency band and the signal in the receive frequency band of the second antenna system, which is conducive to improving the efficiency of the second antenna system, thereby improving the communication performance of the mobile terminal.

[0006] Since the mobile terminal provided in this application is used, the signal of the transmitting frequency band and the signal of the receiving frequency band of the second antenna system can be time-division excited. Therefore, the communication mode of the second antenna system can simultaneously support frequency division duplex and time division duplex, which is conducive to improving the communication capability of the second antenna system, thereby improving the communication performance of the mobile terminal.

[0007] In one possible implementation of this application, the first radiator and the second radiator can be separated by a grounding point or a gap. This allows both the first and second radiators to influence the signal beam gain, shape, circular polarization, and efficiency of the second antenna system's transmission and reception, thereby jointly exciting a resonance that meets the transmission and reception requirements.

[0008] In order to match the tuning states of the first and second tuning circuits according to the operating state of the second antenna system, this application provides a variety of implementation methods.

[0009] For example, in one possible implementation, the first radio frequency chip includes a first control port coupled to a first tuning circuit and a second tuning circuit. This allows the tuning states of the first and second tuning circuits to be controlled via the first control port of the first radio frequency chip.

[0010] Specifically, in one possible implementation of this application, the second modem and the first radio frequency chip are coupled via a first message path. Thus, when the second antenna system is in a transmit time slot, the second modem transmits the transmit status information of the second antenna system to the first radio frequency chip via the first message path. The first radio frequency chip then controls the coupling of the first branch of the first tuning circuit to the first radiator and the coupling of the second branch of the second tuning circuit to the second radiator via its first control port. Conversely, when the second antenna system is in a receive time slot, the second modem transmits the receive status information of the second antenna system to the first radio frequency chip via the first message path. The first radio frequency chip then controls the coupling of the third branch of the first tuning circuit to the first radiator and the coupling of the fourth branch of the second tuning circuit to the second radiator via its first control port. This allows for the use of the first control port of the first antenna system to achieve tuning matching of the first and second tuning circuits, simplifying the structure and tuning method of the mobile terminal while improving the utilization rate of the first control port of the first radio frequency chip.

[0011] In another possible implementation of this application, the first modem and the second modem can be coupled via a first message path. Similarly, when the second antenna system is in a transmit time slot, the second modem transmits the transmit status information of the second antenna system to the first modem via the first message path. The first modem controls the first RF chip to couple the first branch of the first tuning circuit to the first radiator via a first control port, and controls the second branch of the second tuning circuit to couple to the second radiator. Furthermore, when the second antenna system is in a receive time slot, the second modem controls the first RF chip to couple the third branch of the first tuning circuit to the first radiator via a first control port, and controls the fourth branch of the second tuning circuit to couple to the second radiator. This scheme can also utilize the first control port of the first antenna system to achieve tuning matching of the first and second tuning circuits, thereby improving the utilization rate of the first control port of the first RF chip.

[0012] Furthermore, since mobile terminals typically also include a processor, when the second antenna system is in the transmit time slot, the processor transmits the transmit status information of the second antenna system to the first modem. The first modem then controls the first radio frequency chip to couple the first branch of the first tuning circuit to the first radiator via the first control port, and controls the second branch of the second tuning circuit to couple to the second radiator. Similarly, when the second antenna system is in the receive time slot, the processor can transmit the receive status information of the second antenna system to the first modem. The first modem controls the first radio frequency chip to couple the third branch of the first tuning circuit to the first radiator via the first control port, and controls the fourth branch of the second tuning circuit to couple to the second radiator. This scheme eliminates the need for a first message path, thereby simplifying the structure of the mobile terminal's antenna system.

[0013] In order to feed the transmission and reception signals of the second antenna system into the second radiator, in one possible implementation of this application, the second modem is coupled to the first RF chip, and the first RF chip is also coupled to the second tuning circuit through a first RF front-end module. This allows the first RF chip and the first RF front-end module to be used for transmitting RF signals from both the first and second antenna systems, thereby improving the integration of the mobile terminal's antenna system.

[0014] In another possible implementation, the second antenna system also includes a second radio frequency (RF) front-end module. The second modem is coupled to the first RF chip, and the first RF chip is coupled to the second tuning circuit through the second RF front-end module. This approach still allows the first RF chip to be reused between the first and second antenna systems, which is beneficial for improving the integration of the mobile terminal's antenna system.

[0015] In another possible implementation of this application, the second antenna system further includes a second radio frequency (RF) chip and a second RF front-end module. The second modem is coupled to the second RF chip, and the second RF chip is coupled to a second tuning circuit through the second RF front-end module. This allows the second RF chip and the second RF front-end module to feed RF signals to the second radiator, enabling the second radiator to generate signals in the transmit or receive frequency bands of the second antenna system.

[0016] This application does not limit the types of the first and second antenna systems. In one possible implementation, the first antenna system can be a non-satellite antenna system, and the second antenna system can be a satellite antenna system. In this way, when the satellite antenna system is in the transmit and receive time slots, it can be matched with the tuning states of the first and second tuning circuits. This allows the first and second radiators to jointly excite and generate signals in the transmit and receive frequency bands of the satellite antenna. This enables time-division independent excitation of the transmit and receive frequencies of the satellite antenna system, allowing the satellite antenna system to simultaneously support frequency division duplex (FDM) and time division duplex (TDM) communication standards. This improves the performance of the satellite antenna system in both transmit and receive states, thereby enhancing the satellite communication performance of the mobile terminal. Furthermore, it expands the beamwidth of the satellite antenna system, which improves its satellite targeting performance.

[0017] Furthermore, in this application, the non-satellite antenna system includes a cellular antenna system, which in turn includes the aforementioned first modem, first RF chip, first RF front-end module, and first tuning circuit. This allows the first tuning circuit and first radiator of the cellular antenna system to be used for transmitting and receiving signals from the satellite antenna system, thereby improving the integration of the mobile terminal's antenna system.

[0018] In one possible implementation of this application, the non-satellite antenna system further includes a non-cellular antenna system, which comprises a third modem, a third radio frequency chip, a third radio frequency front-end module, a third tuning circuit, and a third radiator. The third modem is coupled to the third radio frequency chip, the third radio frequency chip is coupled to the third tuning circuit via the third radio frequency front-end module, and the third tuning circuit is coupled to the third radiator. Therefore, in the mobile terminal provided by this application, the third modem can control the third radio frequency chip to feed non-cellular radio frequency signals to the third radiator through the third radio frequency front-end module and the third tuning circuit, so that the third radiator can be used to generate resonance of the non-cellular antenna signal.

[0019] Furthermore, in this application, when the first RF chip switches to the first control port, the first control port can be coupled with the first tuning circuit, the second tuning circuit, and the third tuning circuit. Thus, when the satellite antenna system is in the transmit time slot, the first RF chip can control the coupling of the first branch of the first tuning circuit to the first radiator, the second branch of the second tuning circuit to the second radiator, and the fifth branch of the third tuning circuit to the third radiator via the first control port, so that the first, second, and third radiators jointly excite and generate the transmit frequency band signal of the satellite antenna system. When the satellite antenna system is in the receive time slot, the first RF chip controls the coupling of the third branch of the first tuning circuit to the first radiator, the fourth branch of the second tuning circuit to the second radiator, and the sixth branch of the third tuning circuit to the third radiator via the first control port, so that the first, second, and third radiators jointly excite and generate the receive frequency band signal of the satellite antenna. This is beneficial for further improving the signal transmission and reception efficiency of the satellite antenna system, thereby further improving the satellite communication performance of the mobile terminal.

[0020] In the mobile terminal provided in this application, besides matching the tuning state of the tuning circuit using the control port of the first antenna system, the tuning state of the tuning circuit can also be matched by setting a separate control port. For example, in one possible implementation, the second antenna system further includes a second radio frequency (RF) chip and a second RF front-end module. The second modem is coupled to the second RF chip, and the second RF chip is coupled to the second tuning circuit through the second RF front-end module. Furthermore, the first RF chip includes a first control port, and the second RF chip includes a second control port. The first control port is coupled to the first and second tuning circuits via a switching switch, and the second control port is coupled to both the first and second tuning circuits via the switching switch. The switching switch is used to open a path between the first control port and the first and second tuning circuits, or to open a path between the second control port and the first and second tuning circuits. This allows for mutual exclusion between the first and second antenna systems via the switching switch, which improves the communication stability of the first and second antenna systems, thereby enhancing the communication performance of the mobile terminal.

[0021] In one possible implementation of this application, the first RF chip and the second RF chip are coupled via a first message path. The second RF chip can send the operating status information of the second antenna system to the first RF chip through the first message path. Thus, after the second RF chip sends the information indicating the second antenna system has started operating to the first RF chip via the first message path for a set time, the second RF chip controls a switch to open the path between the second control port and the first and second tuning circuits, and simultaneously controls the switch to close the path between the first control port and the first and second tuning circuits. The second RF chip can then feed an RF signal to the second radiator to put the second antenna system into operation. Conversely, after the second RF chip sends the information indicating the second antenna system has stopped operating to the first RF chip via the first message path for a set time, the second RF chip controls a switch to open the path between the first control port and the first and second tuning circuits, and simultaneously controls the switch to close the path between the second control port and the first and second tuning circuits. The first RF chip then feeds an RF signal to the first radiator to put the first antenna system into operation. This allows the first antenna system to be informed of its operating status via the first message path, enabling the second RF chip to control the switching switch. This improves the timeliness of the switching switch control and achieves complete mutual exclusion between the first and second antenna systems, thereby enhancing the operational stability of each antenna system.

[0022] In another possible implementation of this application, the first modem and the second modem may be coupled via a first message path, with the second modem sending operational status information of the second antenna system to the first modem through the first message path. After the second modem sends the second antenna system startup information to the first modem via the first message path for a set time, the second RF chip controls a switch to open the path between the second control port and the first and second tuning circuits, and controls the switch to close the path between the first control port and the first and second tuning circuits. The second RF chip can then feed RF signals to the second radiator to put the second antenna system into operation. Alternatively, after the second modem sends the second antenna system shutdown information to the first modem via the first message path for a set time, the second RF chip controls a switch to open the path between the first control port and the first and second tuning circuits, and controls the switch to close the path between the second control port and the first and second tuning circuits. The first RF chip feeds RF signals to the first radiator to put the first antenna system into operation. This allows the first antenna system to be informed of its operating status via the first message path, enabling the second RF chip to control the switching switch. This improves the timeliness of the switching switch control and achieves complete mutual exclusion between the first and second antenna systems, thereby enhancing the operational stability of each antenna system.

[0023] In another possible implementation of this application, the mobile terminal further includes a processor. When the processor receives information indicating that the second antenna system has started operating, it can control a switch to open the path between the second control port and the first and second tuning circuits, and simultaneously control the switch to close the path between the first control port and the first and second tuning circuits. The second radio frequency chip can then feed radio frequency signals to the second radiator, thus putting the second antenna system into operation. At this time, the tuning states of the first and second tuning circuits can be matched through the second control port to meet the signal transmission and reception requirements of the second antenna system. Conversely, when the processor receives information indicating that the first antenna system has stopped operating, it controls a switch to open the path between the first control port and the first and second tuning circuits, and simultaneously controls the switch to open the path between the second control port and the first and second tuning circuits. The first radio frequency chip feeds radio frequency signals to the first radiator, thus putting the first antenna system into operation. This allows the tuning states of the first and second tuning circuits to be matched through the first control port, thereby meeting the signal transmission and reception requirements of the first antenna system.

[0024] In this application, in the scheme where the second radio frequency chip of the second antenna system includes a second control port, when the second antenna system is in the transmit time slot, the second radio frequency chip can control the coupling of the first branch of the first tuning circuit to the first radiator and the coupling of the second branch of the second tuning circuit to the second radiator through the second control port, so that the first radiator and the second radiator jointly excite and generate the signal of the transmit frequency band of the satellite antenna. Furthermore, when the second antenna system is in the receive time slot, the second radio frequency chip can control the coupling of the third branch of the first tuning circuit to the first radiator and the coupling of the fourth branch of the second tuning circuit to the second radiator through the second control port, so that the first radiator and the second radiator jointly excite and generate the signal of the receive frequency band of the satellite antenna. This allows the second radio frequency chip to simultaneously match the tuning states of the first and second tuning circuits and to feed radio frequency signals to the second radiator, thereby improving the functional integration of the second radio frequency chip. Attached Figure Description

[0025] Figure 1 A schematic diagram illustrating satellite communication of a mobile terminal provided in an embodiment of this application;

[0026] Figure 2 This is a schematic diagram of the structure of a mobile terminal provided in an embodiment of this application;

[0027] Figure 3 A schematic diagram of the antenna system of a mobile terminal provided in an embodiment of this application;

[0028] Figure 4 A schematic diagram of control logic for an antenna system of a mobile terminal provided in an embodiment of this application;

[0029] Figure 5 To adopt Figure 4 The diagram shows the operating mode of the satellite antenna system in the proposed scheme.

[0030] Figure 6 A schematic diagram of another control logic for the antenna system of a mobile terminal provided in an embodiment of this application;

[0031] Figure 7 A schematic diagram of another control logic for the antenna system of a mobile terminal provided in an embodiment of this application;

[0032] Figure 8 A schematic diagram of another control logic for the antenna system of a mobile terminal provided in an embodiment of this application;

[0033] Figure 9 A schematic diagram of another control logic for the antenna system of a mobile terminal provided in an embodiment of this application;

[0034] Figure 10 A schematic diagram of another control logic for the antenna system of a mobile terminal provided in an embodiment of this application;

[0035] Figure 11a A schematic diagram of another control logic for the antenna system of a mobile terminal provided in an embodiment of this application;

[0036] Figure 11b A schematic diagram of another control logic for the antenna system of a mobile terminal provided in an embodiment of this application;

[0037] Figure 12 Another control logic intent for the antenna system of the mobile terminal provided in the embodiments of this application;

[0038] Figure 13 A schematic diagram of a switching switch provided in an embodiment of this application;

[0039] Figure 14 A schematic diagram of another control logic for the antenna system of a mobile terminal provided in an embodiment of this application;

[0040] Figure 15 A schematic diagram of another control logic for the antenna system of a mobile terminal provided in an embodiment of this application;

[0041] Figure 16 This is a schematic diagram of another control logic for the antenna system of a mobile terminal provided in an embodiment of this application.

[0042] Figure label:

[0043] 100 - Cover plate; 200 - Display screen / module; 300 - Printed circuit board; 400 - Mid-frame; 500 - Back cover; 600 - Bezel;

[0044] 1-First modem; 2-First RF chip; 201-First control port; 3-First RF front-end module; 4-First tuning circuit;

[0045] 5-First radiator; 6-Second modem; 7-Second RF front-end module; 8-Second tuning circuit; 9-Second radiator;

[0046] 10-First message path; 11-Second RF chip; 1101-Second control port; 12-Third modem; 13-Third RF chip;

[0047] 14-Third RF front-end module; 15-Third tuning circuit; 16-Third radiator; 17-Second message path; 18-Processor;

[0048] 19-Toggle switch. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of this application clearer, the application will now be described in further detail with reference to the accompanying drawings.

[0050] The terminology used in the following embodiments is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. As used in the specification and appended claims of this application, the singular expressions “a,” “an,” “the,” “the,” “the,” and “this” are intended to also include expressions such as “one or more” unless the context clearly indicates otherwise.

[0051] References to “an embodiment” or “a specific embodiment” as used in this specification mean that one or more embodiments of this application include a particular feature, structure, or characteristic described in connection with that embodiment. The terms “comprising,” “including,” “having,” and variations thereof mean “including, but not limited to,” unless otherwise specifically emphasized.

[0052] The following explains the terminology that may appear in the embodiments of this application.

[0053] Radiator: In an antenna, this is the device used to receive / transmit electromagnetic wave radiation. In some cases, the term "antenna" is narrowly defined as a radiator, which converts guided wave energy from the transmitter into radio waves, or converts radio waves into guided wave energy, for radiating and receiving radio waves. The modulated high-frequency current energy (or guided wave energy) generated by the transmitter is transmitted to the transmitting radiator via a feed line, where it is converted into electromagnetic wave energy of a specific polarization and radiated in the desired direction. The receiving radiator converts the electromagnetic wave energy of a specific polarization from a specific direction in space back into modulated high-frequency current energy, which is then transmitted to the receiver input via a feed line.

[0054] Ground / Plug: This can broadly refer to at least a portion of any grounding layer, ground plane, or grounding metal layer within a mobile terminal (such as a mobile phone), or at least a portion of any combination of the aforementioned grounding layers, ground planes, or grounding components. "Ground / Plug" can be used for grounding components within the mobile terminal. In one embodiment, "Ground / Plug" may include any one or more of the following: a grounding layer of the mobile terminal's circuit board, a ground plane formed by the mobile terminal's frame, a grounding metal layer formed by a thin metal film beneath the screen, a conductive grounding layer of the battery, and conductive or metallic components electrically connected to the aforementioned grounding layer / ground plane / metal layer. In one embodiment, the circuit board may be a printed circuit board (PCB), such as an 8-layer, 10-layer, or 12-14-layer board with 8, 10, 12, 13, or 14 layers of conductive material, or components separated and electrically insulated by dielectric or insulating layers such as glass fiber or polymers.

[0055] Any of the aforementioned grounding layers, ground planes, or grounding metal layers are made of conductive materials. In one embodiment, the conductive material may be any of the following: copper, aluminum, stainless steel, brass and their alloys, copper foil on an insulating substrate, aluminum foil on an insulating substrate, gold foil on an insulating substrate, silver-plated copper, silver-plated copper foil on an insulating substrate, silver foil on an insulating substrate and tin-plated copper, graphite-impregnated cloth, graphite-coated substrates, copper-plated substrates, brass-plated substrates, and aluminum-plated substrates. Those skilled in the art will understand that grounding layers / ground planes / grounding metal layers may also be made of other conductive materials.

[0056] Radio frequency (RF) chip: This is the combination of all components of an antenna used for receiving and transmitting radio frequency waves. In the case of a receiving antenna, the RF chip can be considered as the antenna section from the first amplifier to the front-end transmitter. In a transmitting antenna, the RF chip can be seen as the section after the last power amplifier. In some cases, the RF chip can also be understood as the feed unit. The RF chip has the function of converting radio waves into electrical signals and sending them to the receiver components. Generally, it is considered part of the antenna system for converting radio waves into electrical signals and vice versa. Maximum power transfer capability and efficiency should be considered when designing an antenna. For this purpose, the antenna feed impedance must be matched with the load resistance. The antenna feed impedance is a combination of resistance, capacitance, and inductance. To ensure maximum power transfer conditions, the two impedances (load resistance and feed impedance) should be matched. Matching can be achieved by considering frequency requirements and antenna design parameters such as gain, directivity, and radiation efficiency.

[0057] A power supply / feed circuit is a combination of all circuits used for receiving and transmitting radio frequency (RF) signals. A power supply circuit can include a transceiver and an RF front-end. In some narrower senses, "power supply circuit" refers to an RF integrated circuit (RFIC), which can be considered to include both the RF front-end chip and the transceiver. The power supply circuit has the function of converting radio waves (e.g., RF signals) into electrical signals (e.g., digital signals). It is generally considered part of the RF component.

[0058] In some embodiments, the electronic device may also include a test socket (or, RF socket, or RF test socket). This test socket can be used to insert a coaxial cable to test the characteristics of the RF front-end circuitry or the radiator of the antenna. The RF front-end circuitry can be considered as the circuitry coupled between the test socket and the transceiver.

[0059] Coupling can be understood as direct coupling and / or indirect coupling. "Coupled connection" can be understood as a direct coupling connection and / or indirect coupling connection. Direct coupling, also known as "electrical connection," refers to components being in direct or indirect physical contact and electrically conductive. For example, in circuit construction, different components are connected through physical lines that can transmit electrical signals, such as copper foil or wires on a printed circuit board (PCB). "Indirect coupling" can be understood as two conductors conducting electricity through a gap or without contact. In one embodiment, indirect coupling can also be called capacitive coupling, for example, using the coupling between two conductive parts to form an equivalent capacitance to achieve signal transmission.

[0060] Connection: The process of making two or more components conduct or connect through the above-mentioned "electrical connection" or "indirect coupling" to transmit signals / energy can be called connection.

[0061] In some embodiments, the radio frequency front-end circuit can be integrated into a radio frequency front-end chip in an electronic device, or the radio frequency front-end circuit and the transceiver can be integrated into a radio frequency chip in an electronic device.

[0062] It should be understood that any two feed circuits in the first / second / ...Nth feed circuit of this application can share the same transceiver, for example, by transmitting signals through a radio frequency channel in a transceiver (e.g., a port (pin) of a radio frequency chip); they can also share a radio frequency front-end circuit, for example, by processing signals through a switch or amplifier in a radio frequency front-end.

[0063] It should also be understood that the two feed circuits in the first / second / ...Nth feed circuit of this application typically correspond to two RF test sockets in an electronic device.

[0064] Feed line: Also called a transmission line, it refers to the connection line between the antenna's radio frequency chip and the radiator. Depending on the frequency and form, the transmission line can directly transmit current waves or electromagnetic waves. The connection point on the radiator where it connects to the transmission line is usually called the feed point. Transmission lines include conductive transmission lines, coaxial transmission lines, waveguides, or microstrip lines. Depending on the implementation, transmission lines can include bracket antenna bodies or glass antenna bodies. Depending on the carrier, transmission lines can be made of liquid crystal polymer (LCP), flexible printed circuit boards (FPC), or printed circuit boards (PCBs).

[0065] Resonant frequency: The resonant frequency is also called the resonance frequency. The resonant frequency can have a frequency range, that is, the frequency range in which resonance occurs. The resonant frequency can be a frequency range where the return loss characteristic is less than -6dB. The point of strongest resonance can be called the resonant point, and the frequency corresponding to the resonant point is the center frequency. The return loss characteristic of the center frequency can be less than -20dB. It should be understood that, unless otherwise specified, when the antenna / radiator in this application generates "first / second...resonance," the first resonance should be the fundamental mode resonance generated by the antenna / radiator, or in other words, the lowest frequency resonance generated by the antenna / radiator. It should be understood that the antenna / radiator can generate one or more antenna modes according to a specific design, and each antenna mode can correspond to a fundamental mode resonance.

[0066] Resonant frequency band: The range of resonant frequencies is the resonant frequency band. The return loss characteristics at any frequency point within the resonant frequency band can be less than -6dB or -5dB.

[0067] Communication / Operating Frequency Band: Regardless of the type of antenna, it always operates within a certain frequency range (bandwidth). For example, an antenna supporting the B40 band operates within the frequency range of 2300MHz to 2400MHz, or in other words, its operating frequency band includes the B40 band. The frequency range that meets the specifications can be considered the antenna's operating frequency band. The width of the operating frequency band is called the operating bandwidth. The operating bandwidth of an omnidirectional antenna may reach 3-5% of the center frequency. The operating bandwidth of a directional antenna may reach 5-10% of the center frequency. Bandwidth can be considered as a frequency range on both sides of the center frequency (e.g., the resonant frequency of a dipole), where the antenna characteristics are within the acceptable range of the center frequency.

[0068] The resonant frequency band and the operating frequency band can be the same or different, or their frequency ranges can partially overlap. In one embodiment, the resonant frequency band of the antenna can cover multiple operating frequency bands of the antenna.

[0069] Antenna radiation pattern: also known as radiation pattern. It refers to the graph showing how the relative field strength (normalized modulus) of the antenna's radiated field changes with direction at a certain distance from the antenna. It is usually represented by two mutually perpendicular planar radiation patterns passing through the direction of maximum radiation of the antenna.

[0070] Antenna radiation patterns typically have multiple radiating beams. The beam with the highest radiating intensity is called the main lobe, and the remaining beams are called side lobes. Among the side lobes, the side lobe in the opposite direction to the main lobe is also called the back lobe.

[0071] Radiation efficiency refers to the ratio of the power radiated by an antenna into space (i.e., the power effectively converted into electromagnetic waves) to the active power input to the antenna. The active power input to the antenna equals the antenna's input power minus the power loss. Power loss mainly includes return loss power, ohmic loss power of the metal, and / or dielectric loss power. Both metal loss and dielectric loss are factors affecting radiation efficiency.

[0072] Those skilled in the art will understand that radiation efficiency is generally expressed as a percentage, and there is a corresponding conversion relationship between it and dB. The closer the radiation efficiency is to 0 dB, the better the radiation efficiency of the antenna.

[0073] dB: This stands for decibel, a logarithmic concept with base 10. Decibels are used to evaluate the proportional relationship between two physical quantities; they themselves have no physical dimensions. For every 10-fold increase in the ratio between two quantities, their difference can be expressed as 10 decibels. For example: A = 100, B = 10, C = 5, D = 1, then A / D = 20 dB; B / D = 10 dB; C / D = 7 dB; B / C = 3 dB. In other words, a 10-decibel difference between two quantities is a 10-fold difference, a 20-decibel difference is a 100-fold difference, and so on. A 3-decibel difference is a 2-fold difference between the two quantities.

[0074] The term "end" in the context of the main radiator's first / second / third / fourth / grounded / open ends should not be narrowly interpreted as a point or end physically disconnected from other radiators. It can also refer to a segment of the main radiator including the first endpoint, which is the endpoint of the main radiator at the gap. For example, the first end of the main radiator can be considered a segment of the main radiator within a range of one-eighth of a first wavelength from the first endpoint. The first wavelength can be the wavelength corresponding to the operating frequency band of the main radiator, the wavelength corresponding to the center frequency of the operating frequency band, or the wavelength corresponding to the resonant point. In one embodiment, "end / point" can include a connection / coupling region on the radiator that is coupled to other conductive structures. For example, a feed end / feed point can be a coupling region on the antenna radiator that is coupled to a feed structure (e.g., a region facing a part of the feed structure). Similarly, a ground end / grounding point can be a connection / coupling region on the antenna radiator that is coupled to a ground structure.

[0075] Open and Closed Terminals: In some embodiments, open and closed terminals are defined relative to whether or not they are grounded; the closed terminal is grounded, and the open terminal is not grounded. In one embodiment, the open terminal may also be referred to as a floating terminal, a free terminal, an open terminal, or an open-circuit terminal. In one embodiment, the closed terminal may also be referred to as a grounded terminal or a short-circuit terminal. It should be understood that in some embodiments, other conductors can be coupled through the open terminal to transfer coupled energy (which can be understood as transferring current).

[0076] In some embodiments, the open end and the closed end are, for example, relative to other conductors, with the closed end electrically connected to other conductors and the open end not electrically connected to other conductors.

[0077] To put it simply, the "open end" of a radiator can be defined as one end of the radiator that is spaced apart from the floor or coupled to the floor through a capacitive device.

[0078] To put it simply, the "grounding terminal" of a radiator can be understood as: if one end of the radiator is directly connected to the floor or coupled to the floor through an inductive device, it can be regarded as the grounding terminal of the radiator.

[0079] In some embodiments, the understanding of "closed end" can also be from the perspective of current distribution. A closed end or ground end can be understood as a point of high current or low electric field on a radiator. In one embodiment, coupling electronic devices (e.g., inductive devices) through a closed end can maintain the current distribution characteristics of the point of high current / low electric field. In one embodiment, opening a slit at or near the closed end (e.g., filling the slit with insulating material) can maintain the current distribution characteristics of the point of high current / low electric field.

[0080] In some embodiments, the understanding of "open terminal" can also be from the perspective of current distribution. An open terminal or a floating terminal can be understood as a point with a small current or a point with a large electric field on the radiator. In one embodiment, coupling electronic devices (e.g., capacitive devices) through an open terminal can maintain the current distribution characteristics of the point with a small current or a large electric field.

[0081] It should be understood that when an electronic device (e.g., capacitor, inductor, etc.) is coupled at the radiator end of a gap (which, from the perspective of the radiator's structure, is similar to a radiator at the opening of an open or suspended end), the radiator end can be a point with a large current / small electric field. In this case, it should be understood that the radiator end at the gap is actually a closed end or a grounded end, etc.

[0082] Capacitance: can be understood as lumped capacitance and / or distributed capacitance. Lumped capacitance includes capacitive components, such as capacitor elements; distributed capacitance (or distributed capacitance) includes the equivalent capacitance formed by two conductive components separated by a certain gap.

[0083] Coupling: In this application, it can be understood as indirect coupling, and "coupled connection" can be understood as indirect coupling connection. "Indirect coupling" can be understood as two conductors conducting electricity through a gap / non-contact manner. In one embodiment, indirect coupling can also be called capacitive coupling, for example, signal transmission is achieved by forming an equivalent capacitance through coupling between the gaps between two conductive parts.

[0084] To facilitate understanding of the mobile terminal provided in the embodiments of this application, its application scenarios will be introduced first below.

[0085] Figure 1 A schematic diagram illustrating satellite communication of a mobile terminal provided in this application embodiment, as shown below. Figure 1 As shown, satellite communication belongs to non-terrestrial network (NTN) communication and can be used to communicate with mobile terminals. Compared with terrestrial communication, satellite communication can provide a wider coverage area. It is particularly useful for areas with few or no cellular communication base stations. Based on the satellite's orbital altitude, satellite communication systems can be divided into three types: geostationary earth orbit (GEO) satellite communication systems (also called synchronous orbit communication satellites), medium earth orbit (MEO) satellite communication systems, and low earth orbit (LEO) satellite communication systems. GEO satellites orbit at an altitude of 35,786 km, and their main advantage is that they remain relatively stationary relative to the ground and provide a large coverage area. MEO satellites orbit at altitudes between 2,000 and 35,786 km, and their advantage is that global coverage can be achieved with a relatively small number of satellites. Considering the advantages and disadvantages of MEO satellite communication, it is currently mainly used for positioning and navigation. LEO satellites orbit at altitudes ranging from 300 to 2000 km. Compared to MEO and GEO satellites, LEO satellites orbit at lower altitudes, resulting in advantages such as lower data propagation delay, lower transmission loss, and relatively lower launch costs.

[0086] To enable communication with communication satellites, mobile terminals are equipped with satellite antennas. However, the signal beam of a satellite antenna has a certain directionality. Typically, the beamwidth of a satellite antenna is relatively small, for example, approximately ±15°. Traditional satellite antennas, during operation, simultaneously generate resonances in both the transmitting and receiving frequency bands, meaning they must simultaneously handle both low and high frequencies. This results in poor communication performance. Furthermore, simultaneously exciting two different frequency bands leads to different current distributions in the two resonators, resulting in inconsistent radiation patterns. This affects the beamwidth of the satellite antenna's radiation pattern. Understandably, a smaller signal beamwidth will negatively impact the satellite's ability to target specific satellites.

[0087] In view of this, this application provides a mobile terminal that improves the communication performance of the mobile terminal by enhancing the communication performance of the antenna system.

[0088] Figure 2 This is a schematic diagram of a mobile terminal provided in an embodiment of this application. In this embodiment, a mobile phone is used as an example for illustration. Figure 2 As shown, in one embodiment, the mobile terminal includes a cover 100, a display / module 200, a printed circuit board (PCB) 300, a middle frame 400, and a rear cover 500. It should be understood that in some embodiments, the cover 100 may be a glass cover, or it may be replaced with a cover made of other materials, such as an ultra-thin glass cover, a polyethylene terephthalate (PET) cover, etc. In one embodiment, the cover 100, display 200, middle frame 400, and rear cover 500 can all be considered as part of the housing.

[0089] The cover plate 100 can be set close to the display screen 200, and can be mainly used to protect the display screen 200 from dust.

[0090] In one embodiment, the display screen 200 may include a liquid crystal display (LCD), a light emitting diode (LED) display panel, or an organic light-emitting diode (OLED) display panel, etc., and this application does not limit it.

[0091] The 400mm mid-frame primarily serves to support the entire machine. Figure 2 The diagram shows PCB 300 positioned between the mid-frame 400 and the back cover 500. It should be understood that in one embodiment, PCB 300 may also be positioned between the mid-frame 400 and the display screen 200; this application does not impose any limitations on this. PCB 300 may be made of flame-retardant material (FR-4) dielectric substrate, Rogers dielectric substrate, or a hybrid dielectric substrate of Rogers and FR-4, etc. Here, FR-4 is a designation for a flame-retardant material grade, and Rogers dielectric substrate is a high-frequency board. Electronic components, such as radio frequency chips, are mounted on PCB 300.

[0092] In one embodiment, a metal layer may be disposed on the PCB 300. This metal layer can be used to ground electronic components carried on the PCB 300, or to ground other components such as bracket antennas, frame antennas, etc. This metal layer may be referred to as a ground plane, grounding plate, or grounding layer. In one embodiment, this metal layer can be formed by etching metal onto the surface of any layer of the dielectric substrate in the PCB 300. In one embodiment, the grounding metal layer may be disposed on the side of the PCB 300 near the middle frame 400. In one embodiment, the edge of the printed circuit board PCB 300 can be considered as the edge of its grounding layer. In one embodiment, the metal middle frame 400 can also be used for grounding the aforementioned components. The mobile terminal may also have other ground planes / grounding plates, as previously described, which will not be repeated here.

[0093] Mobile terminals may also include batteries ( Figure 2 (Not shown in the image). The battery may be located between the middle frame 400 and the back cover 500, or between the middle frame 400 and the display screen 200; this application does not limit this. In some embodiments, the PCB 300 is divided into a motherboard and a daughterboard, and the battery may be located between the motherboard and the daughterboard. Specifically, the motherboard may be located between the middle frame 400 and the upper edge of the battery, and the daughterboard may be located between the middle frame 400 and the lower edge of the battery.

[0094] The mobile terminal may also include a frame 600, which may be formed of a conductive material such as metal. The frame 600 may be disposed between the display screen 200 and the back cover 500 and extend circumferentially around the periphery of the mobile terminal. The frame 600 may have four sides surrounding the display screen 200 to help secure the display screen 200. In one implementation, the frame 600 made of metal can be directly used as the metal frame of the mobile terminal, forming a metal frame appearance suitable for industrial design (ID). In another implementation, the outer surface of the frame 600 may also be made of a non-metallic material, such as a plastic frame, forming a non-metallic frame appearance suitable for non-metallic ID.

[0095] The mid-frame 400 may include a border 600. The mid-frame 400, including the border 600, is a single unit that supports the electronic components within the device. The cover plate 100 and the rear cover 500 respectively cover the upper and lower edges of the border 600 to form the outer shell or housing of the mobile terminal. Alternatively, the border 600 may not be considered part of the mid-frame 400. In one embodiment, the border 600 may be connected to the mid-frame 400 and integrally formed. In another embodiment, the border 600 may include inwardly extending protrusions to connect with the mid-frame 400, for example, via spring clips, screws, welding, etc. In one embodiment, the cover plate 100, the rear cover 500, the border 600, and the mid-frame 400 may be collectively referred to as the outer shell or housing of the mobile terminal. It should be understood that "outer shell or housing" can be used to refer to part or all of any one of the cover plate 100, rear cover 500, frame 600 or middle frame 400, or to part or all of any combination of the cover plate 100, rear cover 500, frame 600 or middle frame 400.

[0096] The back cover 500 can be made of metal; it can also be made of non-conductive materials, such as glass or plastic; or it can be made of both conductive and non-conductive materials.

[0097] In one embodiment, the frame 600 can at least partially function as a radiator to transmit / receive radio frequency signals. This portion of the frame acting as the radiator may have gaps between itself and other parts of the middle frame 400, or between itself and the middle frame 400, thereby ensuring a good radiation environment for the radiator. In one embodiment, an aperture may be provided near this portion of the frame acting as the radiator. In one embodiment, the aperture may include an aperture disposed inside the mobile terminal, for example, an aperture not visible from the exterior of the mobile terminal. In one embodiment, the internal aperture may be formed by any one or multiple of the middle frame 400, battery, PCB 300, back cover 500, display screen 200, and other internal conductive components; for example, the internal aperture may be formed by a structural component of the middle frame 400. In one embodiment, the aperture may also include a gap / slit / opening on the frame 600. In one embodiment, the gap / slit / opening on the frame 600 may be a slit formed on the frame 600, at which the frame 600 is divided into two parts without a direct connection. In one embodiment, the aperture may further include a slit / gap / aperture provided on the back cover 500 or the display screen 200. In one embodiment, the back cover 500 includes a conductive material, and the aperture provided in the conductive material may communicate with a slit or gap in the frame to form a continuous aperture on the surface of the mobile terminal.

[0098] In one embodiment, the radiator of the mobile terminal may also be disposed within the frame 600. The frame 600 comprises a non-conductive material, and the radiator of the antenna may be located within the mobile terminal and disposed along the frame 600, or the radiator may be at least partially embedded within the non-conductive material of the frame. In one embodiment, the radiator is disposed close to the non-conductive material of the frame 600 to minimize the volume occupied by the radiator and to be closer to the outside of the mobile terminal, thereby achieving better signal transmission performance. It should be noted that "disposed close to the frame 600" means that the radiator can be disposed tightly against the frame 600 or close to the frame 600, for example, there may be a small gap between the radiator and the frame 600.

[0099] In one embodiment, the radiator of the mobile terminal may also be disposed within the housing, such as a bracket antenna disposed on a circuit board. Figure 1 (Not shown in the image). A gap may exist between the radiator located within the casing and other conductive components inside the casing to ensure a good radiation environment for the radiator. In one embodiment, an aperture may be provided near the radiator. In one embodiment, the aperture may include an aperture located inside the mobile terminal, for example, an aperture not visible from the exterior of the mobile terminal. In one embodiment, the internal aperture may be formed by any one or more of the frame 600, mid-frame 400, battery, PCB 300, back cover 500, display screen 200, and other internal conductive components; for example, the internal aperture may be formed by a structural component of the mid-frame 400. In one embodiment, the aperture may also include a slot / slit / opening on the frame 600. In one embodiment, the slot / slit / opening on the frame 600 may be a slit formed on the frame, dividing the frame 600 into two parts without a direct connection. In one embodiment, the aperture may also include a slot / slit / opening on the back cover 500 or the display screen 200. In one embodiment, the back cover 500 includes a conductive material, and the apertures formed in the conductive material can communicate with the slots or gaps in the frame to form continuous apertures on the surface of the mobile terminal. In one embodiment, the apertures on the back cover 500 or the display screen can also be used to house other devices, such as cameras, and / or sensors, and / or microphones, and / or speakers, etc.

[0100] In one embodiment, the antenna can be based on a flexible printed circuit (FPC), a laser-direct-structuring (LDS) antenna, or a microstrip disk antenna (MDA), among other forms. In another embodiment, the antenna can be a transparent or semi-transparent structure embedded within the screen of the mobile terminal, making it a transparent antenna unit embedded within the screen of the mobile terminal.

[0101] Figure 2 The images only schematically illustrate some of the components included in the mobile terminal; the actual shape, size, and construction of these components are not subject to change. Figure 2 limited.

[0102] It should be understood that in the embodiments of this application, the surface where the mobile terminal's display screen is located can be considered as the front, the surface where the back cover is located as the back, and the surface where the frame is located as the side.

[0103] It should be understood that, in the embodiments of this application, when a user holds (typically vertically and facing the screen) a mobile terminal, the mobile terminal is considered to have a top, bottom, and side orientation.

[0104] The mobile terminal in this application embodiment can have a variety of options, such as any mobile terminal such as a candybar phone, a foldable phone, a multi-fold phone, a tablet computer, or a smart screen.

[0105] Figure 3 This is a schematic diagram of the antenna system of a mobile terminal provided in an embodiment of this application, as shown below. Figure 3 As shown, the mobile terminal in this embodiment includes a satellite antenna system for receiving / transmitting electromagnetic waves. Specifically, the satellite antenna system is used to receive electromagnetic waves from a communication satellite or to transmit electromagnetic waves to a communication satellite. The satellite antenna system is used to transmit electromagnetic waves with the communication satellite, thereby enabling the mobile terminal to perform satellite communication functions. In specific embodiments, the mobile terminal can be used to achieve at least one of satellite SMS, satellite phone, and satellite internet access through the satellite antenna system.

[0106] like Figure 3 As shown, the main radiator of the satellite antenna system can be positioned on the top of the mobile terminal to facilitate satellite alignment during user operation. However, due to limited space on the top of the mobile terminal, and the presence of non-satellite antenna systems such as cellular and non-cellular antenna systems in addition to the satellite antenna system, it is advisable to consider sharing some components between the satellite antenna system and the non-satellite antenna systems. Figure 3In this mobile terminal, the main radiator of the satellite antenna system is located at the top of the mobile terminal. Simultaneously, the satellite antenna system utilizes radiators from non-satellite antenna systems located near its main radiator as parasitic radiators. Alternatively, the satellite antenna system can fully utilize the radiators from non-satellite antenna systems for signal transmission, thereby improving both the communication performance of the satellite antenna system and the utilization rate of each radiator in the mobile terminal. The mobile terminal provided in this application will now be described in detail with reference to specific embodiments.

[0107] Figure 4 This is a schematic diagram of the control logic for an antenna system of a mobile terminal provided in an embodiment of this application. Figure 4 As shown, in this application, the mobile terminal includes at least two antenna systems, such as a first antenna system and a second antenna system. The specific types of the first and second antenna systems are not limited; for example, the first antenna system is a non-satellite antenna system, and the second antenna system is a satellite antenna system. Alternatively, the non-satellite antenna system may include a cellular antenna system. For ease of understanding, in... Figure 4 In the illustrated embodiment, the first antenna system is a cellular antenna system and the second antenna system is a satellite antenna system, which are used as examples for illustration.

[0108] You can continue to refer to Figure 4 The cellular antenna system includes a first modem 1, a first radio frequency chip 2, a first radio frequency front-end module 3, and a first tuning circuit 4. The first modem 1 is coupled to the first radio frequency chip 2, and the first radio frequency chip 2 is coupled to the first tuning circuit 4 through the first radio frequency front-end module 3. Additionally, the mobile terminal also includes a first radiator 5, and the first tuning circuit 4 is coupled to the first radiator 5.

[0109] It is worth mentioning that, in this application, the first tuning circuit 4 can be used to adjust the resonance mode of the first radiator. The first tuning circuit 4 may include multiple branches, each branch corresponding to a tuning state. Furthermore, the first tuning circuit 4 may include one or more tuning devices. When the first tuning circuit 4 includes one tuning device, that one tuning device may include multiple tuning modes, and the multiple tuning modes correspond to multiple branches of the first tuning circuit 4. Additionally, when the first tuning circuit 4 includes multiple tuning devices, the multiple tuning devices can collectively form multiple branches.

[0110] exist Figure 4 In the illustrated embodiment, the satellite antenna system includes a second modem 6, a second radio frequency front-end module 7, and a second tuning circuit 8, wherein the second modem 6 is coupled to the second radio frequency front-end module 7, and the second radio frequency front-end module 7 is coupled to the second tuning circuit 8. Additionally, the mobile terminal also includes a second radiator 9, and the second tuning circuit 8 is coupled to the second radiator 9.

[0111] In this application, a radiator can be considered as a distance from a grounding point to an open end. Therefore, the first radiator 5 and the second radiator 9 can be two radiators separated by a grounding point or a gap. Furthermore, this application does not limit the specific number of the first radiator 5 and the second radiator 9; that is, there can be one or more first radiators 5, and one or more second radiators 9.

[0112] The mobile terminal provided in this application includes at least two tuning circuits for adjusting the resonant mode of the radiator. Based on this, by matching the tuning states of each tuning circuit, the radiator of the cellular antenna system can be used for satellite communication when the satellite antenna system is in operation, thereby improving the communication performance of the satellite antenna system. It is worth noting that in this application, the first tuning circuit 4 and the second tuning circuit 8 can be coupled or uncoupled, depending on actual needs.

[0113] In specific implementation, you can continue to refer to Figure 4 The first radio frequency chip 2 also includes a first control port 201. This application does not limit the type of the first control port 201; exemplary examples include a mobile industry processor interface (MIPI) or a general-purpose input / output (GPIO) port. This first control port 201 is coupled to the first tuning circuit 4 and the second tuning circuit 8, and is used to control the coupling of corresponding branches of the first tuning circuit 4 and the second tuning circuit 8 with their corresponding radiators according to the communication requirements of the mobile terminal, thereby achieving matching of the tuning states of the first tuning circuit 4 and the second tuning circuit 8.

[0114] exist Figure 4 In the illustrated embodiment, the second modem 6 and the first RF chip 2 are coupled through a first message path 10. This allows the second modem 6 to transmit the transmission status information of the satellite antenna system to the first RF chip 2 through the first message path 10 when the satellite antenna system is in a transmission time slot. The first RF chip 2 can then control the coupling of the first branch of the first tuning circuit 4 with the first radiator 5 through the first control port 201, and control the coupling of the second branch of the second tuning circuit 8 with the second radiator 9. For example, at this time, the first tuning circuit 4 is in a first state and the second tuning circuit 8 is in a second state, thereby matching a tuning state that meets the transmission requirements of the satellite antenna, so that the first radiator 5 and the second radiator 9 can jointly excite and generate the transmission frequency band signal of the satellite antenna system.

[0115] It is worth noting that, in this application, the joint excitation of the first radiator 5 and the second radiator 9 to generate the signal in the transmission band of the satellite antenna system can be understood as follows: both the first radiator 5 and the second radiator 9 can affect the beam gain, shape, circular polarization, and efficiency of the signal in the transmission band of the satellite antenna system. This includes the case where both the first radiator 5 and the second radiator 9 receive the feed signal, and also the case where one radiator (e.g., the second radiator 9) receives the feed signal, while the other radiator (e.g., the first radiator 5) acts as a parasitic radiator of the aforementioned radiator.

[0116] In addition, when the satellite antenna system is in the receiving time slot, the second modem 6 can transmit the receiving status information of the satellite antenna to the first radio frequency chip 2 through the first message path 10. Then, the first radio frequency chip 2 can control the third branch of the first tuning circuit 4 to couple with the first radiator 5 through the first control port 201, and control the fourth branch of the second tuning circuit 8 to couple with the second radiator. For example, at this time, the first tuning circuit 4 is in the third state and the second tuning circuit 8 is in the fourth state, thereby matching the tuning state that meets the receiving requirements of the satellite antenna so that the first radiator 5 and the second radiator 9 can jointly excite and generate the signal of the receiving frequency band of the satellite antenna system. That is to say, the first radiator 5 and the second radiator 9 both affect the beam gain and shape, circular polarization and efficiency of the signal of the receiving frequency band of the satellite antenna system.

[0117] It is understandable that the adoption Figure 4 In the design scheme of the mobile terminal shown, the satellite antenna system does not need to be equipped with a control port. Instead, the first control port 201 of the cellular antenna system is used to achieve tuning and matching of the first tuning circuit 4 and the second tuning circuit 8. This can simplify the structure of the mobile terminal while improving the utilization rate of the first control port 201 of the cellular antenna system.

[0118] Additionally, refer to Figure 5 , Figure 5 To adopt Figure 4 The diagram illustrates the operating mode of the satellite antenna system in the proposed scheme. Figure 5As shown, using the control method of the antenna system provided in this application, the tuning states of the first tuning circuit 4 and the second tuning circuit 8 can be matched using the cellular antenna system when the satellite antenna system is in the transmit and receive time slots. This allows the first radiator 5 and the second radiator 9 to jointly generate signals in the transmit and receive frequency bands of the satellite antenna. This enables time-division independent excitation of the transmit and receive frequencies of the satellite antenna system, allowing the communication mode of the satellite antenna system to simultaneously support frequency division duplex and time division duplex. This is beneficial for improving the performance of the satellite antenna system in both transmit and receive states, thereby improving the satellite communication performance of the mobile terminal (exemplarily by an improvement of approximately 2dB). Furthermore, it is beneficial for expanding the beamwidth of the satellite antenna system (exemplarily expandable to ±40°), which is beneficial for improving the satellite alignment effect of the satellite antenna system.

[0119] It is worth noting that in this application, frequency division duplexing (FDD) and time division duplexing (TDD) are two different duplexing methods. Duplexing refers to bidirectional transmission, such as during a phone call where both parties can speak and hear each other. Furthermore, the antenna system supporting FDD uses different transmit and receive frequency bands, and it simultaneously excites the resonance of both the transmit and receive frequency bands. This means that FDD requires the tuning circuit to be tuned to two different states to correspond to different frequencies. The antenna system supporting TDD uses the same transmit and receive frequency bands, but the resonance of the transmit and receive frequency bands is time-division multiplexed. This means that TDD requires the tuning circuit to be switched to the states corresponding to transmission and reception at different times. The antenna system design provided in this application enables the satellite antenna system to simultaneously support both frequency division duplexing and time division duplexing, effectively improving the transmission and reception efficiency of the satellite antenna system, thereby enhancing the satellite communication performance of the mobile terminal.

[0120] In the above Figure 4 In the illustrated embodiment, a first message path 10 is added between the first RF chip 2 and the second modem 6. This allows the second modem 6 to communicate the transmission and reception status information of the satellite antenna system to the first RF chip 2 via the first message path 10 when the satellite antenna system is operating. It is understood that, in this application, the transmission status information of the satellite antenna system refers to the operating status information of the satellite antenna system in the transmission time slot, and the reception status information refers to the operating status information of the satellite antenna system in the reception time slot.

[0121] And because of Figure 4In the illustrated embodiment, the satellite antenna system may further include a second radio frequency chip 11, wherein the second radio frequency chip 11 is coupled to the second modem 6, and the second radio frequency chip 11 may be coupled to the second tuning circuit 8 through the second radio frequency front-end module 7. In a possible embodiment of this application, the first message path 10 may also be connected between the first radio frequency chip 2 and the second radio frequency chip 11, so that when the satellite antenna system is working, the second radio frequency chip 11 may inform the first radio frequency chip 2 of the satellite antenna's transmission status information and reception status information through the first message path 10.

[0122] In addition, in other embodiments of this application, the transmission status information and reception status information of the satellite antenna system can be communicated to the cellular antenna system in other possible ways. For example, such as... Figure 6 As shown, Figure 6 This is another control logic diagram of the antenna system of a mobile terminal provided in an embodiment of this application. (Similar to the above...) Figure 4 The embodiment shown differs from the one described above in that... Figure 6 In the illustrated embodiment, the first modem 1 is coupled to the second modem 6 or the second radio frequency chip 11 through the first message path 10. The second modem 6 or the second radio frequency chip 11 can inform the first modem 1 of the transmission status information and reception status information of the satellite antenna system through the first message path 10. In this way, the first modem 1 can further inform the first radio frequency chip 2 of the transmission status information and reception status information of the satellite antenna system, thereby achieving the matching of the tuning status of the first tuning circuit 4 and the second tuning circuit 8 through the first control port 201 of the first radio frequency chip 2.

[0123] It is worth mentioning that, Figure 4 In the illustrated embodiment, the first message path 10 can be connected between the corresponding message interfaces of the second modem 6 and the first RF chip 2, or between the corresponding message interfaces of the second RF chip 11 and the first RF chip 2. Figure 6In the illustrated embodiment, the first message path 10 can be connected between the corresponding message interfaces of the second modem 6 and the first modem 1, or between the second RF chip 11 and the corresponding message interface of the first modem 1. The aforementioned message interface can be, but is not limited to, a general-purpose input / output port (GPIO), a universal asynchronous receiver / transmitter (UART), a peripheral component interconnect express (PCIE) interface, an I3C communication interface (improved inter-integrated circuit), or an interprocess communication (IPC) interface, as long as it can be used to implement high / low level, rising edge, or falling edge signal transmission.

[0124] Alternatively, there can be one first message path 10, in which case both the transmission status information and the reception status information of the satellite antenna system are transmitted through this single first message path 10. Or, there can be two first message paths 10, in which case the transmission status information and the reception status information of the satellite antenna system are transmitted through separate first message paths 10.

[0125] In the above Figure 4 and Figure 6 In the illustrated embodiment, the first modem 1 and the first radio frequency chip 2 are two independently configured devices. However, in other embodiments of this application, for example... Figure 7 In the illustrated embodiment, the first modem 1 and the first radio frequency chip 2 can also be integrated into a single structure, but Figure 7 The connection relationships and control logic of the devices in the illustrated embodiment are as follows: Figure 6 The embodiments shown are similar and will not be described in detail here.

[0126] Based on the above description of the control principle of the antenna system of the mobile terminal provided in this application through various embodiments, a series of adaptive modifications can be made to the antenna system of the mobile terminal according to the design requirements of actual application scenarios. For example, in Figure 8 In the illustrated embodiment, the first modem 1 and the second modem 6 are integrated into a single structure, allowing for the transmission of satellite antenna transmit and receive status information from the second modem 6 to the first modem 1 within this integrated structure. Furthermore, compared to the embodiments described above, Figure 8In the embodiment shown, the first radio frequency chip 2 is set separately, which allows the satellite antenna system and the cellular antenna system to share the first radio frequency chip 2 and the first radio frequency front-end module 3. This is beneficial to simplify the communication system of the mobile terminal and improve the utilization rate of each device.

[0127] Figure 9 This is another control logic diagram of the antenna system of a mobile terminal provided in an embodiment of this application. (Similar to the above...) Figure 8 Compared to the embodiments shown, in Figure 9 In the illustrated embodiment, the first RF chip 2 is coupled to both the first RF front-end module 3 and the second RF front-end module 7. Thus, when the satellite antenna system is in operation, the tuning states of the first tuning circuit 4 and the second tuning circuit 8 can be matched through the first control port 201 of the first RF chip 2. At the same time, the first RF chip 2 can feed the RF signal of the receiving or transmitting frequency band of the satellite antenna system to the second radiator 9 through the second RF front-end module 7 and the second tuning circuit 8, thereby exciting the first radiator 5 and the second radiator 9 to jointly generate corresponding resonance to meet the satellite communication requirements of the mobile terminal.

[0128] The preceding descriptions have used the control logic between satellite antenna systems and cellular antenna systems as examples. However, in mobile terminals, non-satellite antenna systems, in addition to the aforementioned cellular antenna systems, also include non-cellular antenna systems, such as Wi-Fi antenna systems. Therefore, in some embodiments of this application, some or all components of the non-cellular antenna system can be used for satellite communication to improve the integration of the mobile terminal's antenna system. For specific implementation, refer to... Figure 10 , Figure 10 This is a schematic diagram of another control logic for the antenna system of a mobile terminal provided in an embodiment of this application. Figure 9 The difference between the illustrated embodiment and the one shown is that, in Figure 10 In the illustrated embodiment, the mobile terminal further includes a non-cellular antenna system, which comprises a third modem 12, a third radio frequency chip 13, a third radio frequency front-end module 14, a third tuning circuit 15, and a third radiator 16. The third modem 12 is coupled to the third radio frequency chip 13, the third radio frequency chip 13 is coupled to the third tuning circuit 15 via the third radio frequency front-end module 14, and the third tuning circuit 15 is coupled to the third radiator 16. It is understood that in this application, the third tuning circuit 15 can be configured with reference to the first tuning circuit 4 and the second tuning circuit 8 described above, and will not be elaborated upon here.

[0129] exist Figure 10In the illustrated embodiment, the third tuning circuit 15 may be coupled to at least one of the first tuning circuit 4 and the second tuning circuit 8, or it may not be coupled; this is not a limitation in this application. However, the first control port 201 of the first RF chip 2 may also be coupled to the third tuning circuit 15. Thus, when the satellite antenna system is operating, the states of the first tuning circuit 4, the second tuning circuit 8, and the third tuning circuit 15 can be matched through the first control port 201 of the first RF chip 2. For example, when the satellite antenna system is in a transmission time slot, the first RF chip 2 can control the first branch of the first tuning circuit 4 to couple with the first radiator 5, control the second branch of the second tuning circuit 8 to couple with the second radiator 9, and control the fifth branch of the third tuning circuit 15 to couple with the third radiator 16 through the first control port 201, so as to obtain a tuning state that meets the transmission requirements of the satellite antenna system. Furthermore, when the satellite antenna system is in the receiving time slot, the first RF chip 2 can control the coupling of the third branch of the first tuning circuit 4 with the first radiator 5, the coupling of the fourth branch of the second tuning circuit 8 with the second radiator 9, and the coupling of the sixth branch of the third tuning circuit 15 with the third radiator 16 via the first control port 201, so as to achieve a tuning state that meets the receiving requirements of the satellite antenna system. This improves the flexibility of tuning matching of each tuning circuit, enabling the first radiator 5, the second radiator 9, and the third radiator 16 to jointly generate resonance that meets the requirements of satellite communication, which is beneficial to improving the satellite communication performance of the mobile terminal.

[0130] Figure 11a This is another control logic diagram of the antenna system of a mobile terminal provided in an embodiment of this application. (Similar to the above...) Figure 10 The embodiment shown differs from the one described above in that... Figure 11a In the embodiment shown, the second modem 6 is not integrated with the first modem 1, but is integrated with the second RF chip 11 into a single structure. In addition, the second RF chip 11 is coupled to the second tuning circuit 8 through the second RF front-end module 7.

[0131] In addition, Figure 11aIn the illustrated embodiment, the first modem 1 and the second modem 6 are coupled via a first message path 10, and the second modem 6 and the third modem 12 are coupled via a second message path 17. Thus, when the satellite antenna system is operating, the second modem 6 can inform the first modem 1 of the transmission and reception status information of the satellite antenna system via the first message path 10. Simultaneously, the second modem 6 can also inform the third modem 12 of the transmission and reception status information of the satellite antenna system via the second message path 17. This allows the first control port 201 of the first RF chip 2 to match the tuning states of the first tuning circuit 4, the second tuning circuit 8, and the third tuning circuit 15. This enables the second tuning circuit 8 of the cellular antenna system and the third tuning circuit 15 of the non-cellular antenna system to be used in the satellite antenna system, which is beneficial for improving the communication performance of the satellite antenna system.

[0132] As can be seen from the above description of the embodiments, in this application, as Figure 11b In the illustrated scheme, the first message path 10 can also be located between the second modem 6 and the first RF chip 2, or between the second RF chip 11 and the first RF chip 2; the second message path 17 can also be located between the second modem 6 and the third RF chip 13, or between the second RF chip 11 and the third RF chip 13. The control logic can be referred to above, and will not be elaborated upon here.

[0133] Furthermore, in the above embodiments, the operating status information of the satellite antenna system is communicated to the non-satellite antenna system via a message path. Since the mobile terminal also includes a processor 18, in other embodiments of this application, the operating status information of the satellite antenna system can also be communicated to the non-satellite antenna system via the processor 18. Simply put, when the satellite antenna system is in a transmission time slot, the processor 18 transmits the transmission status information of the satellite antenna system to the first modem 1. The first modem 1 controls the first radio frequency chip 2 to couple the first branch of the first tuning circuit 4 to the first radiator 5 via the first control port 201, and controls the second branch of the second tuning circuit 8 to couple to the second radiator 9. When the mobile terminal also includes the aforementioned third tuning circuit 15, the first modem 1 further controls the first radio frequency chip 2 to couple the fifth branch of the third tuning circuit 15 to the third radiator 16 via the first control port 201.

[0134] When the satellite antenna system is in a receiving time slot, the processor 18 transmits the receiving status information of the satellite antenna system to the first modem 1. The first modem 1 controls the first radio frequency chip 2 to couple the third branch of the first tuning circuit 4 to the first radiator 5 through the first control port 201, and controls the fourth branch of the second tuning circuit 8 to couple to the second radiator 9. When the mobile terminal also includes the aforementioned third tuning circuit 15, the first modem 1 further controls the first radio frequency chip 2 to couple the sixth branch of the third tuning circuit 15 to the third radiator 16 through the first control port 201.

[0135] In the above embodiments, the description focuses on the example of a satellite antenna system using the first control port 201 of a cellular antenna system to match the tuning states of each tuning circuit. In some embodiments, the satellite antenna system may further include a second control port, which allows for state matching of the first and second tuning circuits during operation. For specific implementation details, please refer to... Figure 12 , Figure 12 This is another control logic intent for the antenna system of the mobile terminal provided in the embodiments of this application. Figure 12 The system architecture of the embodiment shown is Figure 4 The embodiments shown are similar, but differ in that... Figure 12 In the illustrated embodiment, the second radio frequency chip 11 of the satellite antenna system further includes a second control port 1101. Additionally, the mobile terminal includes a switch 19. The first control port 201 is coupled to the first tuning circuit 4 and the second tuning circuit 8 via the switch 19, and the second control port 1101 is also coupled to the first tuning circuit 4 and the second tuning circuit 8 via the switch 19. In this application, the switch 19 can be used to connect the first control port 201 to the first tuning circuit 4 and the second tuning circuit 8, or to connect the second control port 1101 to the first tuning circuit 4 and the second tuning circuit 8.

[0136] When specifically configuring switch 19, refer to... Figure 13 , Figure 13 This is a schematic diagram of a switching switch provided in an embodiment of this application. Since MIPI switches are usually set in pairs, the switching switch 19 can be configured as follows: Figure 13 The double-pole double-throw switch shown. Additionally... Figure 13 This demonstrates a practical application scenario where both poles of switch 19 are switched to be connected to the first control port and disconnected from the second control port.

[0137] You can continue to refer to Figure 12The second RF chip 11 is coupled to the first RF chip 2 via a first message path 10. In this embodiment, the second RF chip 11 can send the operating status information of the satellite antenna system to the first RF chip 2 through the first message path 10. Specifically, before the satellite antenna system is started, the second RF chip 11 can send information about the satellite antenna system starting up to the first RF chip 2 through the first message path 10. After a set time T1, the second RF chip 11 controls the switch 19 to open the path between the second control port 201 and the first tuning circuit 4 and the second tuning circuit 8, and controls the switch 19 to close the path between the first control port 201 and the first tuning circuit 4 and the second tuning circuit 8. At this time, the second control port 1101 can be used to match the tuning state of the first tuning circuit 4 and the second tuning circuit 8 to meet the communication requirements of the satellite antenna system. In this way, the second RF chip 11 can feed RF signals to the second radiator 9 to realize the satellite communication function of the mobile terminal.

[0138] It is worth mentioning that, in this application, after the second radio frequency chip 11 sends the satellite antenna system start-up information to the first radio frequency chip 2 through the first message channel 10, the cellular antenna system can be allowed to complete the service it is processing within a set time T1. After the set time T1, if the cellular antenna system completes the service it is processing, the cellular antenna system can notify the satellite antenna system that it can start through the first message channel 10. If the cellular antenna system has not completed the service it is processing after the set time T1, the second radio frequency chip 11 can directly control the switching switch to perform the above-mentioned switching action through preemption, so as to forcibly end the service being processed by the cellular antenna system and ensure the communication performance of the satellite antenna system.

[0139] Furthermore, after the satellite antenna system completes its service processing, the second RF chip 11 can send a message indicating that the satellite antenna system has stopped working to the first RF chip 2 via the first message path 10. After a set time T2, the second RF chip 11 controls the switch 19 to open the path between the first control port 201 and the first tuning circuit 4 and the second tuning circuit 8, and controls the switch 19 to close the path between the second control port 1101 and the first tuning circuit 4 and the second tuning circuit 8. At this time, the first control port 201 can be used to match the tuning states of the first tuning circuit 4 and the second tuning circuit 8 to meet the communication requirements of the cellular antenna system. Thus, RF signals can be fed into the first radiator 5 via the first RF chip 2, enabling communication using the cellular antenna system. This mutual exclusion between the two antenna systems is achieved through the switch 19, which helps improve the stability of communication between the various antenna systems.

[0140] It is understandable that after the aforementioned set time T2, the second radio frequency chip 11 controls the switching switch 19 to perform the aforementioned action, which can ensure the completion of the satellite antenna system's services and improve the user experience.

[0141] As described above, the following is adopted: Figure 12 The control logic shown allows for matching the tuning states of the first tuning circuit 4 and the second tuning circuit 8 via the second control port 1101 of the satellite antenna system when the system is operational. Simply put, when the satellite antenna system is in the transmit time slot, the second RF chip 11 controls the coupling of the first branch of the first tuning circuit 4 to the first radiator 5 and the coupling of the second branch of the second tuning circuit 8 to the second radiator 9 via the second control port 1101, so that the first radiator 5 and the second radiator 9 can jointly excite and generate signals in the transmit frequency band of the satellite antenna system. When the satellite antenna system is in the receive time slot, the second RF chip 11 controls the coupling of the third branch of the first tuning circuit 4 to the first radiator 5 and the coupling of the fourth branch of the second tuning circuit 8 to the second radiator 9 via the second control port 1101, so that the first radiator 5 and the second radiator 9 can jointly excite and generate signals in the receive frequency band of the satellite antenna system.

[0142] Figure 14 This is another control logic diagram of the antenna system of a mobile terminal provided in an embodiment of this application. (Similar to the above...) Figure 12 The difference is that, in Figure 14In the illustrated embodiment, the first message path 10 is located between the first modem 1 and the second modem 6. That is, the first modem 1 and the second modem 6 are coupled through the first message path 10, allowing the second modem 6 to send satellite antenna system operating status information to the first modem 1 via the first message path 10. In practical applications, after the second modem 6 sends the second antenna system startup information to the first modem 1 via the first message path 10 for a set time T1, the second RF chip 11 controls the switch 19 to open the path between the second control port 1101 and the first tuning circuit 4 and the second tuning circuit 8, and controls the switch 19 to close the path between the first control port 201 and the first tuning circuit 4 and the second tuning circuit 8. Then, the second RF chip 11 can feed RF signals to the second radiator 9 to realize the satellite communication function of the mobile terminal. In addition, after the second modem 6 sends a message to the first modem 1 via the first message path 10 indicating that the second antenna system has stopped working, and sets a time T2, the second radio frequency chip 11 controls the switch 19 to open the path between the first control port 201 and the first tuning circuit 4 and the second tuning circuit 8, and controls the switch 19 to close the path between the second control port 1101 and the first tuning circuit 4 and the second tuning circuit 8. In this way, radio frequency signals can be fed into the first radiator 5 through the first radio frequency chip 2, so that communication can be carried out using the cellular antenna system. Figure 14 Other parts of the illustrated embodiment can be referred to. Figure 12 The settings will be configured, but will not be detailed here.

[0143] It is worth mentioning that in some other embodiments of this application, the processor 18 can also control the switching switch 19. Specifically, when the processor receives the information that the satellite antenna system has started working and sets the time T1, the processor 18 can control the switching switch 19 to disconnect the path between the first control port 201 and the first tuning circuit 4 and the second tuning circuit 8, and open the path between the second control port 1101 and the first tuning circuit 4 and the second tuning circuit 8. At this time, the second radio frequency chip 11 can feed radio frequency signals to the second radiator 9 to realize the satellite communication function of the mobile terminal. When the processor receives the information that the satellite antenna system has stopped working and sets the time T2, the processor 18 controls the switching switch 19 to open the path between the first control port 201 and the first tuning circuit 4 and the second tuning circuit 8, and disconnect the path between the second control port 1101 and the first tuning circuit 4 and the second tuning circuit 8. In this way, radio frequency signals can be fed to the first radiator 5 through the first radio frequency chip 2, so that communication can be carried out using the cellular antenna system. In this embodiment, the processor 18 can control the switching switch 19 to realize the mutual exclusion between the two antenna systems.

[0144] Understandably, based on the above... Figure 14 and Figure 15 As illustrated in the embodiment, when the mobile terminal includes a cellular antenna system, a satellite antenna system, and a non-cellular antenna system, the non-cellular antenna system can also be equipped with a third control port. This third control port can be coupled to the first tuning circuit 4, the second tuning circuit 8, and the third tuning switch 15 via a switching switch 19. Since the mutual exclusion between the non-cellular antenna system and other antenna systems can be achieved by referring to the mutual exclusion mechanism between the cellular antenna system and the satellite antenna system described above, it will not be elaborated upon here.

[0145] Figure 15 This is another control logic diagram of the antenna system of a mobile terminal provided in an embodiment of this application. (Similar to the above...) Figure 12 The difference is that, in Figure 15 In the illustrated embodiment, no switching switch is provided, and the mutual exclusion between the satellite antenna system and the cellular antenna system can be achieved through message notification. For example, when the satellite antenna system is in operation, the path between the second control port 1101 of the second RF chip 11 and the first tuning circuit 4 and the second tuning circuit 8 is connected. Simultaneously, the second modem 6 can inform the first RF chip 2 of the satellite antenna system's operating status information through the first message path 10. The first RF chip 2 then obtains the information that the satellite antenna system is in operation through the first message path 10 and controls the path between the first control port 201 and the first tuning circuit 4 and the second tuning circuit 8 to be disconnected. Conversely, when the cellular antenna system is in operation, the first modem 1 controls the first control port 201 of the first RF chip 2 to be connected to the path between the first tuning circuit 4 and the second tuning circuit 8, and the second modem 6 obtains the information that the cellular antenna system is in operation through the first message path 10 and controls the path between the second control port 1101 and the first tuning circuit 4 and the second tuning circuit 8 to be disconnected.

[0146] Figure 16 This is another control logic diagram of the antenna system of a mobile terminal provided in an embodiment of this application. (Similar to the above...) Figure 15 The difference is that, in Figure 16 In the embodiment shown, the first message path 10 is located between the first modem 1 and the second modem 6. That is, the first modem 1 and the second modem 6 are coupled through the first message path 10. This allows the first modem 1 to directly obtain information about the working status of the satellite antenna system through the first message path 10, and allows the second modem 6 to directly obtain information about the working status of the cellular antenna system through the first message path 10. Figure 16 Other parts of the illustrated embodiment can be referred to. Figure 15 The settings will be configured, but will not be detailed here.

[0147] In addition, Figure 15 and Figure 16 Based on the scheme shown, the setting of the first message path 10 can be omitted. Instead, the processor 18 controls the conduction and disconnection of the corresponding antenna system according to the obtained antenna system working status information, thereby realizing the mutual exclusion between the two antenna systems through the processor 18.

[0148] The above embodiments are merely exemplary descriptions of the control logic of the antenna system of the mobile terminal provided in this application. Based on these, a series of adaptive modifications can be made according to the design needs of actual application scenarios. For example, the cellular antenna system in the embodiments of non-cellular antenna systems not mentioned above can be replaced with a non-cellular antenna system or other non-satellite antenna systems. Alternatively, the second modem 6 and the second radio frequency chip 11 of the satellite antenna system can be integrated with the third modem 12 and the third radio frequency chip 13 of the non-cellular antenna system into a single structure. These are not listed here, but all should be understood to fall within the protection scope of this application.

[0149] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A mobile terminal, characterized in that, It includes a first antenna system, a second antenna system, a first radiator, and a second radiator, wherein: The first antenna system includes a first modem, a first radio frequency chip, a first radio frequency front-end module, and a first tuning circuit; the first modem is coupled to the first radio frequency chip, the first radio frequency chip is coupled to the first tuning circuit through the first radio frequency front-end module, and the first tuning circuit is coupled to the first radiator. The second antenna system includes a second modem and a second tuning circuit, the second modem being coupled to the second tuning circuit, and the second tuning circuit being coupled to the second radiator; The second antenna system is in the transmission time slot. The first branch of the first tuning circuit is coupled to the first radiator, and the second branch of the second tuning circuit is coupled to the second radiator. The first radiator and the second radiator jointly excite and generate the transmission frequency band signal of the second antenna system. The second antenna system is in the receiving time slot. The third branch of the first tuning circuit is coupled to the first radiator, and the fourth branch of the second tuning circuit is coupled to the second radiator. The first radiator and the second radiator jointly excite and generate the signal of the receiving frequency band of the second antenna system.

2. The mobile terminal as described in claim 1, characterized in that, The second antenna system supports both frequency division duplex and time division duplex communication standards.

3. The mobile terminal as described in claim 1 or 2, characterized in that, The first radiator and the second radiator are separated by a grounding point or a gap.

4. The mobile terminal as described in any one of claims 1 to 3, characterized in that, The first radio frequency chip includes a first control port, which is coupled to the first tuning circuit and the second tuning circuit.

5. The mobile terminal as described in claim 4, characterized in that, The second modem is coupled to the first radio frequency chip via a first message path; The second antenna system is in the transmission time slot. The second modem transmits the transmission status information of the second antenna system to the first radio frequency chip through the first message path. The first radio frequency chip controls the first branch of the first tuning circuit to couple with the first radiator through the first control port, and controls the second branch of the second tuning circuit to couple with the second radiator. The second antenna system is in the receiving time slot. The second modem transmits the receiving status information of the second antenna system to the first radio frequency chip through the first message path. The first radio frequency chip controls the third branch of the first tuning circuit to couple with the first radiator through the first control port, and controls the fourth branch of the second tuning circuit to couple with the second radiator.

6. The mobile terminal as described in claim 4, characterized in that, The first modem and the second modem are coupled through a first message path; The second antenna system is in the transmission time slot. The second modem transmits the transmission status information of the second antenna system to the first modem through the first message path. The first modem controls the first radio frequency chip to control the first branch of the first tuning circuit to couple with the first radiator through the first control port, and controls the second branch of the second tuning circuit to couple with the second radiator. The second antenna system is in the receiving time slot. The second modem transmits the receiving status information of the second antenna system to the first modem through the first message path. The first modem controls the first radio frequency chip to control the third branch of the first tuning circuit to couple with the first radiator through the first control port, and controls the fourth branch of the second tuning circuit to couple with the second radiator.

7. The mobile terminal as described in claim 4, characterized in that, The mobile terminal also includes a processor. The second antenna system is in a transmission time slot. The processor transmits the transmission status information of the second antenna system to the first modem. The first modem controls the first radio frequency chip to control the first branch of the first tuning circuit to couple with the first radiator through the first control port, and controls the second branch of the second tuning circuit to couple with the second radiator. When the second antenna system is in the receiving time slot, the processor transmits the receiving status information of the second antenna system to the first modem. The first modem controls the first radio frequency chip to control the third branch of the first tuning circuit to couple with the first radiator through the first control port, and controls the fourth branch of the second tuning circuit to couple with the second radiator.

8. The mobile terminal as described in any one of claims 1 to 7, characterized in that, The second modem is coupled to the first RF chip, and the first RF chip is also coupled to the second tuning circuit through the first RF front-end module.

9. The mobile terminal as described in any one of claims 1 to 7, characterized in that, The second antenna system further includes a second radio frequency front-end module, the second modem is coupled to the first radio frequency chip, and the first radio frequency chip is coupled to the second tuning circuit through the second radio frequency front-end module.

10. The mobile terminal according to any one of claims 1 to 7, characterized in that, The second antenna system further includes a second radio frequency chip and a second radio frequency front-end module. The second modem is coupled to the second radio frequency chip, and the second radio frequency chip is coupled to the second tuning circuit through the second radio frequency front-end module.

11. The mobile terminal according to any one of claims 1 to 10, characterized in that, The first antenna system is a non-satellite antenna system, and the second antenna system is a satellite antenna system.

12. The mobile terminal as described in claim 11, characterized in that, The non-satellite antenna system includes a cellular antenna system, which includes the first modem, the first radio frequency chip, the first radio frequency front-end module, and the first tuning circuit.

13. The mobile terminal as described in claim 12, characterized in that, The non-satellite antenna system further includes a non-cellular antenna system, which includes a third modem, a third radio frequency chip, a third radio frequency front-end module, a third tuning circuit, and a third radiator; the third modem is coupled to the third radio frequency chip, the third radio frequency chip is coupled to the third tuning circuit through the third radio frequency front-end module, and the third tuning circuit is coupled to the third radiator.

14. The mobile terminal as described in claim 13, characterized in that, The first radio frequency chip includes a first control port, which is coupled to the first tuning circuit, the second tuning circuit and the third tuning circuit; When the satellite antenna system is in the transmission time slot, the first radio frequency chip controls the first branch of the first tuning circuit to couple with the first radiator through the first control port, controls the second branch of the second tuning circuit to couple with the second radiator, and controls the fifth branch of the third tuning circuit to couple with the third radiator. The first radiator, the second radiator and the third radiator jointly excite and generate the signal of the transmission radio frequency band of the satellite antenna system. When the satellite antenna system is in the receiving time slot, the first radio frequency chip controls the third branch of the first tuning circuit to couple with the first radiator through the first control port, controls the fourth branch of the second tuning circuit to couple with the second radiator, and controls the sixth branch of the third tuning circuit to couple with the third radiator. The first radiator, the second radiator and the third radiator jointly excite and generate the signal of the receiving frequency band of the satellite antenna.

15. The mobile terminal as described in claim 1, characterized in that, The second antenna system further includes a second radio frequency chip and a second radio frequency front-end module. The second modem is coupled to the second radio frequency chip, and the second radio frequency chip is coupled to the second tuning circuit through the second radio frequency front-end module. The first RF chip includes a first control port, and the second RF chip includes a second control port; the first control port is coupled to the first tuning circuit and the second tuning circuit via a switching switch, and the second control port is coupled to the first tuning circuit and the second tuning circuit via the switching switch; the switching switch is used to open the path between the first control port and the first tuning circuit and the second tuning circuit, or to open the path between the second control port and the first tuning circuit and the second tuning circuit.

16. The mobile terminal as described in claim 15, characterized in that, The first radio frequency chip and the second radio frequency chip are coupled through a first message path, and the second radio frequency chip sends the operating status information of the second antenna system to the first radio frequency chip through the first message path. After the second RF chip sends the information about the second antenna system starting to work to the first RF chip through the first message path for a set time, the second RF chip controls the switching switch to open the path between the second control port and the first tuning circuit and the second tuning circuit, and controls the switching switch to close the path between the first control port and the first tuning circuit and the second tuning circuit, and the second RF chip feeds RF signals to the second radiator. After the second RF chip sends the information that the second antenna system has stopped working to the first RF chip through the first message path for a set time, the second RF chip controls the switching switch to open the path between the first control port and the first tuning circuit and the second tuning circuit, and controls the switching switch to close the path between the second control port and the first tuning circuit and the second tuning circuit, and the first RF chip feeds an RF signal to the first radiator.

17. The mobile terminal as described in claim 15, characterized in that, The first modem and the second modem are coupled through a first message path, and the second modem sends the operating status information of the second antenna system to the first modem through the first message path. After the second modem sends the information about the second antenna system starting to work to the first modem through the first message path and sets the time, the second radio frequency chip controls the switching switch to open the path between the second control port and the first tuning circuit and the second tuning circuit, and controls the switching switch to close the path between the first control port and the first tuning circuit and the second tuning circuit. The second radio frequency chip feeds radio frequency signals to the second radiator. After the second modem sends a message to the first modem through the first message path indicating that the second antenna system has stopped working, the second RF chip controls the switch to open the path between the first control port and the first and second tuning circuits, and controls the switch to close the path between the second control port and the first and second tuning circuits. The first RF chip then feeds an RF signal to the first radiator.

18. The mobile terminal as described in claim 15, characterized in that, The mobile terminal also includes a processor. When the processor receives the information that the second antenna system has started working and sets a time, the processor controls the switching switch to open the path between the second control port and the first tuning circuit and the second tuning circuit, and controls the switching switch to close the path between the first control port and the first tuning circuit and the second tuning circuit. The second radio frequency chip feeds radio frequency signals to the second radiator. When the processor receives the information that the second antenna system has stopped working and sets a time, the processor controls the switching switch to open the path between the first control port and the first tuning circuit and the second tuning circuit, and controls the switching switch to close the path between the second control port and the first tuning circuit and the second tuning circuit, and the first radio frequency chip feeds radio frequency signals to the first radiator.

19. The mobile terminal as described in any one of claims 16 to 18, characterized in that, The second antenna system is in the transmission time slot. The second radio frequency chip controls the first branch of the first tuning circuit to couple with the first radiator through the second control port, and controls the second branch of the second tuning circuit to couple with the second radiator. The first radiator and the second radiator jointly excite and generate the signal of the transmission radio frequency band of the satellite antenna. The second antenna system is in the receiving time slot. The second radio frequency chip controls the third branch of the first tuning circuit to couple with the first radiator through the second control port, and controls the fourth branch of the second tuning circuit to couple with the second radiator. The first radiator and the second radiator jointly excite and generate the signal of the receiving frequency band of the satellite antenna.

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