terminal device

Abstract

The utility model discloses a terminal equipment, this terminal equipment includes: antenna, metal decoration, replacement switch and multiple grounding paths, wherein, replacement switch and metal decoration electricity are connected, and replacement switch is shiftable with one or more in each grounding path electricity is connected, and metal decoration is grounded. Utilize replacement switch and connect metal decoration with different grounding paths to form the parasitic coupling relation of differentiation between metal decoration and antenna, strengthen antenna signal. Meanwhile adopt above -mentioned mode, compared with using mechanical rotating antenna etc., and mechanical structure is simpler.

Description

Technical Field

[0001] This utility model relates to the field of terminal equipment technology, and in particular to a terminal equipment. Background Technology

[0002] In current mobile communication technologies, smartphones and other devices widely use GPS antennas for positioning and navigation functions, making the design of mobile phone antennas particularly critical.

[0003] In existing technologies, mechanically rotating antennas may be used. However, mechanically rotating antennas increase the complexity of the antenna and are prone to mechanical failure. Utility Model Content

[0004] An embodiment of this utility model provides a terminal device, including: an antenna, a metal decorative part, a displacement switch, and multiple grounding paths; wherein, the displacement switch is electrically connected to the metal decorative part; the displacement switch can be switched to be electrically connected to one or more of the grounding paths to ground the metal decorative part.

[0005] Furthermore, at least a portion of the grounding path includes radio frequency devices;

[0006] The types and / or quantities of the radio frequency devices in different grounding paths are different, and / or the parameters of the radio frequency devices in different grounding paths are different.

[0007] Furthermore, the radio frequency device is one or more of an inductor, capacitor, resistor, or filter.

[0008] Furthermore, at least one of the grounding paths is a grounding conductor.

[0009] Furthermore, the replacement switch is a radio frequency switching device, which is a single-pole multi-throw radio frequency switch, a PIN diode switch, a FET switch, a microelectromechanical system switch, or a programmable impedance tuning device.

[0010] Furthermore, the control signal for the displacement switch is provided by the processor's GPIO pins, the RF front-end controller, or the sensor control circuit.

[0011] Furthermore, the metal decorative element is connected to different grounding paths, forming differentiated parasitic coupling relationships with the antenna.

[0012] Furthermore, the terminal device also includes sensors and a circuit board module, wherein the sensors are used to identify the application scenario of the terminal device;

[0013] Both the displacement switch and the sensor are connected to the circuit board module. The circuit board module is used to control the displacement switch to switch the grounding path after receiving the application scenario of the terminal device.

[0014] Furthermore, the sensor includes a specific absorption rate sensor and / or a gyroscope sensor.

[0015] Furthermore, the terminal device is a mobile terminal.

[0016] In this embodiment, a displacement switch is used to connect the metal decorative piece to different grounding paths, thereby creating a differentiated parasitic coupling relationship between the metal decorative piece and the antenna, and strengthening the antenna signal.

[0017] Furthermore, the mechanical structure is simpler when using the above method compared to using mechanically rotating antennas. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the front structure of the electronic device in an embodiment of this application;

[0019] Figure 2 This is a schematic diagram of the structure of the electronic device after the back cover is removed in an embodiment of this application;

[0020] Figure 3 This is a circuit diagram illustrating the grounding of the metal decorative component in an embodiment of this application;

[0021] Figure 4 For control logic flowchart;

[0022] Figure 5 This is a comparison chart of the active test with actual directional pattern adjustment (original state);

[0023] Figure 6 This is a comparison chart of active power distribution test results with actual directional pattern adjustment (terminal device facing upwards at 90 degrees);

[0024] Figure 7 This is a comparison chart of active power distribution test results with actual directional pattern adjustment (terminal device facing upwards at 45 degrees);

[0025] Figure 8 This is a comparison chart of the active test with actual directional pattern adjustment (original state);

[0026] Figure 9 This is a comparison chart of active power distribution test results with actual radiation pattern adjustment (held in the left hand);

[0027] Figure 10 This is a comparison chart of active power distribution test results (held in right hand). Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the various embodiments of this utility model will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been provided in the various embodiments of this utility model to facilitate a better understanding of this application. However, the technical solutions claimed in the claims of this application can be implemented even without these technical details and with various variations and modifications based on the following embodiments.

[0029] Unless the context requires otherwise, throughout the specification and claims, the word “comprising” and its variations, such as “including” and “having”, shall be understood to have an open, inclusive meaning, that is, to be interpreted as “including, but not limited to”.

[0030] The embodiments of this utility model will be described in detail below with reference to the accompanying drawings to provide a clearer understanding of the purpose, features, and advantages of this utility model. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of this utility model, but are merely illustrative of the essential spirit of the technical solution of this utility model.

[0031] Throughout this specification, references to "an embodiment" or "an embodiment" indicate that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Therefore, the appearance of "in an embodiment" or "an embodiment" in various places throughout the specification does not necessarily refer to the same embodiment. Furthermore, a particular feature, structure, or characteristic may be combined in any manner in one or more embodiments.

[0032] The singular forms “a” and “the” used in this specification and the appended claims include plural references unless otherwise expressly stated herein. It should be noted that the term “or” is generally used to mean “and / or” unless otherwise expressly stated herein.

[0033] In the following description, in order to clearly demonstrate the structure and working method of this utility model, a number of directional terms will be used. However, terms such as "front", "back", "left", "right", "outside", "inside", "outward", "inward", "up", and "down" should be understood as convenient terms and not as limiting terms.

[0034] The embodiments of this utility model are described below with reference to the accompanying drawings.

[0035] In one possible scenario, GPS antennas sometimes face a critical issue: their inherent radiation pattern is easily affected by how the device is held and its orientation. When users hold their phones or devices differently or place them at different angles, antenna performance degrades significantly, leading to unstable satellite signal reception, or even complete signal loss in certain situations. This problem is particularly pronounced in urban environments where signal obstruction and multipath effects are severe, negatively impacting the user's navigation experience.

[0036] One aspect of this application provides a terminal device, including: an antenna, a metal decorative element, a displacement switch, and multiple differentiated grounding paths, each grounding path being grounded; the displacement switch is electrically connected to the metal decorative element, and the displacement switch can be switched to be electrically connected to one or more of the grounding paths to ground the metal decorative element.

[0037] This design allows the metal decorative element to select the optimal grounding path via a displacement switch, based on different usage scenarios and needs, thereby altering the antenna's current distribution and radiation pattern. By dynamically adjusting the grounding path of the metal decorative element, the equivalent radiator of the antenna can be effectively controlled, thus optimizing the antenna's directivity and improving signal reception sensitivity and stability. The technology in this embodiment enhances the GPS antenna's signal reception capability under different holding and placement angles, reduces signal blind spots, and improves user experience. In other embodiments, the optimal grounding path can be predicted using software algorithms, and the displacement switch state can be pre-adjusted to further improve the accuracy and real-time performance of pattern control.

[0038] Furthermore, since the mechanical structure of the antenna is not directly altered, the mechanical structure of the antenna in this application can be simpler compared to using a mechanically rotating antenna.

[0039] It should be noted that differentiated grounding paths can be understood as different grounding paths providing different impedance matching and signal conditioning methods, enabling metal decorative parts to flexibly adjust their electrical characteristics according to different scenarios.

[0040] Furthermore, at least part of the grounding path includes: one or more radio frequency (RF) devices, which are grounded after being connected in parallel or series. The types and / or quantities of RF devices differ in different grounding paths. And / or the parameters of the RF devices differ in different grounding paths; even when the types and quantities of RF devices in each grounding path are exactly the same, the parameters of each RF device can be different.

[0041] The differentiated design of radio frequency (RF) devices offers various impedance matching and signal conditioning possibilities, allowing metal decorative components to flexibly adjust their electrical characteristics according to different scenarios. Variations in RF device parameters directly affect the antenna's radiation efficiency and directivity; precise control of RF devices can optimize antenna performance. The technology in this embodiment significantly improves the antenna's resistance to obstruction and signal coverage, especially in complex environments with human presence and changing angles. In other embodiments, even finer radiation pattern control can be achieved by dynamically adjusting the parameters of the RF devices.

[0042] Furthermore, in one possible embodiment, the radio frequency (RF) device can be one or more of an inductor, capacitor, resistor, or filter. Selecting different types of RF devices allows for diverse control over the antenna's current distribution and radiation characteristics. Inductors and capacitors can change the antenna's resonant frequency, resistors can adjust the antenna's impedance matching, and filters can filter out unwanted interference signals. Depending on the application scenario, different grounding paths can be set, flexibly adjusting antenna performance and improving signal quality and stability. In other embodiments, adding variable inductors or capacitors can achieve a wider range of frequency adjustments, enhancing the antenna's spectral adaptability.

[0043] Furthermore, at least one grounding path is a grounding conductor, meaning the metal decorative element can be directly grounded when needed. As one of the most fundamental grounding paths, the grounding conductor ensures a direct connection between the metal decorative element and the main ground, providing a stable reference ground for the antenna. The grounding conductor ensures the antenna's current loop, which is beneficial for stable signal transmission. In other embodiments, the stability of the current loop can be further optimized and the antenna's radiation efficiency improved by increasing the thickness or length of the grounding conductor.

[0044] Furthermore, the replacement switch is an RF switching device, which can be a single-pole multi-throw (SPMWOT) RF switch, a PIN diode switch, a FET switch, a microelectromechanical system (MEMS) switch, or a programmable impedance tuning device. The selection of the RF switching device provides high-speed switching and precise control capabilities, meeting the need for rapid antenna pattern adjustment. Different types of RF switching devices have different switching speeds and loss characteristics; through optimized selection, efficient and low-power dynamic grounding switching can be achieved. The technology in this embodiment can quickly respond to changes in user behavior, adjust antenna performance in a timely manner, and improve the real-time performance and stability of signal reception. In other embodiments, multiple RF switching devices can be integrated to construct a more complex switching network, enabling richer combinations of grounding modes.

[0045] Furthermore, the control signal for the displacement switch is provided by the processor's GPIO pins, the RF front-end controller, or the sensor control circuit. This design provides multi-source control signal input, enhancing the system's adaptability and intelligence to complex environments. The processor, RF front-end controller, and sensor control circuit can generate corresponding control signals based on different input data, driving the displacement switch to switch the ground path. The technology in this embodiment enables automated adjustment of antenna performance without manual user intervention, improving the user experience. In other embodiments, the optimal control signal can be predicted through software algorithms to pre-adjust the displacement switch state, further improving the accuracy and real-time performance of pattern control.

[0046] Furthermore, the metal decorative element is connected to different grounding paths, forming differentiated parasitic coupling relationships with the antenna. This diverse design of parasitic coupling relationships allows the metal decorative element to play different roles depending on the grounding path, such as a radiator, parasitic unit, or shielding layer. The grounding path of the metal decorative element affects its electromagnetic interaction with the antenna; by adjusting the parasitic coupling relationship, the antenna's radiation pattern and radiation efficiency can be optimized. The technology in this embodiment can fully utilize the spatial layout of the metal decorative element, improving antenna performance while saving internal space in the mobile phone. In other embodiments, the parasitic coupling relationship can be further optimized by changing the shape or size of the metal decorative element, achieving more efficient radiation pattern control.

[0047] Furthermore, the terminal device also includes sensors and a circuit board module. The sensors are used to identify the application scenario of the terminal device. Both the displacement switch and the sensors are connected to the circuit board module, which controls the displacement switch to switch the grounding path after receiving the application scenario of the terminal device. The sensors can monitor the usage status of the mobile phone in real time, and the motherboard automatically adjusts the grounding path of the displacement switch based on the sensor data to achieve dynamic optimization of the radiation pattern. The technology in this embodiment can automatically adapt to changes in user behavior, such as grip and placement angle, improving the stability and directionality of GPS signal reception. In other embodiments, by increasing the types and number of sensors, such as pressure sensors and temperature sensors, more comprehensive environmental perception can be achieved, further improving the accuracy and effect of radiation pattern control.

[0048] Furthermore, the sensors include a specific absorption rate sensor and / or a gyroscope sensor. The combined use of the specific absorption rate sensor and the gyroscope sensor enables more accurate determination of the phone's usage status, such as the degree of human occlusion and the phone's orientation. The specific absorption rate sensor determines whether the phone is being held or close to a person by detecting the degree of absorption of radio frequency energy by the human body; the gyroscope sensor determines the phone's orientation by measuring angular velocity and angle changes. The technology in this embodiment enables more precise directional pattern control, especially in complex environments with human occlusion and changing angles. In other embodiments, data from other sensors, such as accelerometers and magnetometers, can be fused to achieve more comprehensive phone status recognition, further improving the accuracy and real-time performance of directional pattern control.

[0049] Furthermore, the terminal device is a mobile terminal. Mobile terminal devices can be smartphones, tablets, etc. Due to their portability and versatility, mobile terminal devices are particularly suitable for this technical solution to improve the stability and directionality of GPS signal reception. The technology in this embodiment can significantly improve the signal reception capability of mobile terminals under different holding and placement angles, reduce signal blind spots, and enhance user experience. In other embodiments, this technology can also be applied to other terminal devices requiring stable high-frequency signal reception, such as wearable devices and in-vehicle navigation systems, to solve signal obstruction and directionality problems.

[0050] The technical solution of this application relates to the working process, specifically as follows: In practical applications, when a user uses a mobile terminal, the specific absorption rate sensor and gyroscope sensor monitor the phone's usage status in real time, including the degree of human occlusion and the phone's placement angle. After receiving this sensor data, the motherboard analyzes it through software algorithms to determine the optimal antenna pattern configuration. Subsequently, the motherboard sends a control signal to the displacement switch to adjust its grounding path with the metal decorative component, forming a differentiated parasitic coupling relationship, thereby optimizing the antenna's current distribution and radiation pattern. This process is continuous and automatic, capable of adjusting antenna performance in real time according to changes in user behavior, ensuring the stability and directionality of signal reception.

[0051] The specific embodiments will be described in detail below with reference to the accompanying drawings:

[0052] Figure 1 The structural layout of the front of the terminal device is shown. Figure 2 A schematic diagram of the terminal device after removing the back cover 12. Figure 1 and Figure 2 In this example, the terminal device is a mobile phone. However, it should be noted that in the embodiments, tablets, wearable devices, etc. can also be used as examples for illustration.

[0053] like Figure 1 and Figure 2 As shown, the terminal device 100 includes a housing 1 and a display screen 2. The housing 1 and the display screen 2 form a mounting cavity, and all electronic components are installed in the mounting cavity and fixedly connected to the housing 1. The structure of the housing 1 is not limited. In one possible implementation, the housing 1 includes a middle frame 11 and a back cover. The middle frame 11 includes a base plate 111 and an outer frame 112 connected to the outer periphery of the base plate 111. The outer frame 112 can be configured as an annular outer frame surrounding the outer periphery of the base plate 111. In the thickness direction of the terminal device, the display screen 2 and the back cover 12 are respectively disposed on both sides of the outer frame 112, and the base plate 111 is located between the display screen 2 and the back cover 12.

[0054] In other possible implementations, the housing 2 may consist only of the middle frame 11, with the base plate 111 of the middle frame 11 serving as the rear cover 12 of the terminal device 100. The terminal device 100 may also be configured with other structures, which will not be listed in this application.

[0055] Those skilled in the art will understand that the mounting cavity can accommodate components such as the battery 6, camera module 3, speaker, flexible circuit board 5, and circuit board module 4. The display screen 2 and other components can be electrically connected to the circuit board module 4 to control various functions of the terminal device. The circuit board module 4 includes a first main board 41 and a second main board 42, which are connected by the flexible circuit board 5.

[0056] The above mainly introduced the basic structural components of the terminal device 100. The following text will illustrate the possible implementation methods of the antenna 7 and the metal decorative part 8 with reference to the attached drawings.

[0057] like Figure 2 As shown, the camera module 3 of the terminal device 100 is located on the back of the terminal device 100. The camera module 3 has a metal decorative piece 8, which protects, fixes, and decorates the camera module 3. The antenna 7 is located on the outer frame 112 and is positioned close to the metal decorative piece 8.

[0058] Figure 3 The circuit principle of how the metal decorative piece 8 is connected to different grounding paths 10 via the displacement switch 9 is revealed. For example... Figure 3 As shown, the RF switching device is a single-pole multi-throw RF switch (displacement switch 9). The metal decorative piece can be switched between four different ground paths 10 by connecting to the common port (ANT terminal) of the single-pole multi-throw RF switch (displacement switch 9) chip.

[0059] The four output ports of the single-pole multi-throw RF switch 9 are RF1, RF2, RF3, and RF4, corresponding to different grounding paths 10. For example, RF1 can be a direct grounding path, RF2 can be connected in series with a small inductor to form a frequency response ground, RF3 can be connected in series with an inductor L7501 for pattern modulation, and RF4 can be connected in series with an inductor and a TVS diode D7511 for electrostatic discharge protection and parasitic effect modulation. It should be noted that in some embodiments, the RF devices in each grounding path can be either inductors 101 or capacitors. When all are inductors 101, the parameters of each inductor 101 or capacitor can be different. In other embodiments, the grounding path can also include one inductor and one capacitor, or only one capacitor. Furthermore, in some embodiments, the grounding path can be a single grounding wire, through which the metal decorative part 8 can be directly grounded. In summary, it is important to emphasize that the RF devices in each grounding path can be different to create various impedance matching and signal conditioning possibilities, allowing the metal decorative part to flexibly adjust its electrical characteristics according to different scenarios.

[0060] The control ports V1 to V3 of the single-pole multi-throw RF switch 9 are connected to the GPIO pins 11 (GPIO1 to GPIO3) of the circuit board module 4 respectively. The circuit board module 4 outputs control signals according to the scene information to switch the grounding path of the metal decorative part 8.

[0061] This circuit achieves pattern adjustment under different grounding modes through a combination of differentiated RF components in hardware configuration, thereby enhancing the antenna system's adaptability to holding posture and usage scenarios.

[0062] In addition, the terminal device 100 may also include sensors, such as a specific absorptivity sensor and a gyroscope. The specific absorptivity sensor is also known as a SAR sensor.

[0063] Figure 4 This is a schematic diagram of the control logic in the terminal device 100 of the present invention, which identifies the status of the mobile phone through a sensor and switches the grounding path 10 of the metal decorative part 8.

[0064] like Figure 4 As shown, the circuit board module 4 detects the current usage status of the terminal device 400 through sensors. The SAR sensor is used to detect the approach or occlusion of a human body, and the gyroscope is used to identify changes in the spatial posture of the mobile phone, such as the grip direction and horizontal / vertical status.

[0065] Two types of sensors output corresponding scene recognition results: the SAR sensor identifies scene 1, scene 2, and scene 3; the gyroscope identifies scene a, scene b, and scene c. Each identified scene corresponds to several preset grounding control switch states. For example, scene 1 corresponds to preset switch state 1, scene 2 corresponds to preset switch states 2 and 3, and scene c may trigger states 6 and 7. The "preset switch states" are used to control the on / off combination of the replacement switch, determining which grounding path the metal decorative part will be grounded through.

[0066] The control logic block diagram illustrates the intelligent scene perception mechanism of this application embodiment: by digitizing external physical states such as holding posture and occlusion state into control signals and associating them with the replacement switch 9, the metal decorative part 8 is ultimately driven to connect with the corresponding grounding path 10, thereby achieving the purpose of dynamically adjusting the antenna pattern and improving signal quality.

[0067] Figures 5 to 7 This is a comparison chart of active antenna pattern adjustment test results. It compares the antenna pattern under two preset switching states and the original pattern at 100 different placement angles of the terminal device.

[0068] Figure 5 The antenna performance parameters in the original state under the L1 band (1575.42MHz) are provided. Without any preset switching applications, i.e., under the default RF switching configuration, we observed a front-to-back ratio of 1.035906482 for antenna 7, indicating relatively uniform antenna radiation with no obvious forward or backward bias. The beamwidth is 65, and the average carrier-to-noise ratio (CNO.Avg(dB)) is 42.58. These parameters reflect the basic performance of antenna 7 without special optimization and serve as a benchmark for measuring the effectiveness of any improvements. Through... Figure 5 By comparing the original state parameters with the parameters under different preset switching states, the actual impact of RF path changes on antenna performance can be clearly seen.

[0069] Figure 6This demonstrates the antenna performance when the phone is positioned at a 90° screen-up angle in preset switch state 1. At this state, the L1 band remains at 1575.42MHz. The RF1 port of the replacement switch 9 (RF switch SP4T) is activated, altering the coupling relationship between antenna 7 and the metal decorative piece 8. As a result, the forward-to-back ratio increases to 3.78895124, indicating a significant optimization of the antenna's forward radiation intensity, making it more suitable for long-distance communication in a fixed direction. The beamwidth reaches 117, wider than in the original state, signifying increased radiation coverage. The average carrier-to-noise ratio (CNO.Avg(dB)) decreases to 42.06, possibly due to additional noise introduction or signal attenuation caused by the adjusted coupling relationship. However, overall, the parameters in preset switch state 1 demonstrate the terminal device's ability to optimize antenna performance in different scenarios, providing better signal quality and communication performance for specific applications even with some compromises.

[0070] Figure 7 The effect of preset switch state 2 with the phone screen facing upwards at 45° is presented. In this state, RF1 and RF3 ports of RF switch 9 are simultaneously turned on, which changes the coupling mode between the antenna and the metal decorative part, as well as the path of the RF signal. At this time, the L1 band is still 1575.42MHz, and the front-to-back ratio reaches 8.65932541, which is significantly higher than the original state and other preset switch states, indicating that the antenna's forward radiation concentration and intensity have been greatly improved. The beamwidth is 134, further widening the radiation coverage, which is very advantageous in application scenarios requiring wide coverage. The average carrier-to-noise ratio (CNO.Avg(dB)) is 42.41, which is slightly lower than the original state, but still remains at a high level, ensuring good signal quality. Figure 7 The data fully demonstrates that by adjusting the radio frequency path, antenna performance can be optimized under specific holding methods, communication efficiency can be improved, and the impact of electromagnetic interference can be reduced.

[0071] Figures 8 to 10 It also serves as a comparison chart of active antenna pattern adjustments, comparing the antenna pattern under two preset switching states with the original pattern at 100 different placement angles of the terminal device and under different hand holding states.

[0072] Figure 8 The antenna performance parameters in the original state under the L1 band (1575.42MHz) are presented again as a basis for comparison. The front-to-back ratio remains at 1.035906482, the beamwidth is 65, and the average carrier-to-noise ratio (CNO.Avg(dB)) is 42.58. These parameters remain stable, providing a reference point for subsequent performance comparisons under various preset switching states. By comparing these original values ​​with... Figure 9 , Figure 10 By comparing the measured data with those of other embodiments, the impact of RF path adjustment on antenna performance can be intuitively evaluated, verifying the effectiveness of the technical solution of this application.

[0073] Figure 9 This demonstrates the impact of the conduction state of the RF3 port of the displacement switch 9 (RF switch SP4T) on antenna performance when the phone is held in the left hand and facing upwards at a 90° angle. In this state, the L1 band remains at 1575.42MHz, with a forward-to-back ratio of 6.234282103, significantly higher than the original state. This indicates that the antenna's forward radiation intensity and concentration have been optimized. The beamwidth is 116, indicating a still wide radiation coverage. The average carrier-to-noise ratio (CNO.Avg(dB)) drops to 39.41, likely due to increased signal interference from the surrounding environment caused by the change in hand grip. Nevertheless, Figure 9 The data shows that even in complex hand-held scenarios, appropriate RF path adjustments can still significantly improve antenna performance and achieve better communication results.

[0074] Figure 10 The effect of the conduction state of the RF4 port of the displacement switch 9 (RF switch SP4T) on antenna performance is demonstrated when the phone is held in the right hand and facing upward at a 45° angle. Figure 10 After RF4 is turned on, the L1 band remains at 1575.42MHz, with a significant increase in the front-to-back ratio to 3.0141. This indicates that the forward radiation intensity of antenna 7 is significantly better than that of the back-to-back, enhancing directivity and improving reception capability in key directions. The beamwidth increases to 117°, indicating an expanded main lobe coverage area, making it more adaptable to dynamic usage posture changes. CNO.Avg drops slightly to 38.16dB, but remains at a good communication level, proving that the system can maintain stable signal quality even under obstruction or biased holding conditions.

[0075] The results show that by controlling the RF switch to switch different grounding paths (such as RF4), the equivalent current distribution of the metal decorative parts can be effectively adjusted, the parasitic coupling relationship between them and the main antenna can be changed, thereby dynamically optimizing the antenna pattern and improving the signal performance in specific scenarios.

[0076] In summary, this application's embodiments optimize antenna performance and adapt to various application scenarios by intelligently adjusting the RF path and grounding strategy of the metal decorative parts. Through the coordinated operation of the displacement switch 9, the sensor, and the circuit board module 4, the device can automatically select the most suitable preset switching state based on factors such as the user's grip and the usage environment to reduce electromagnetic interference and improve signal quality, thereby ensuring optimal communication performance in all possible scenarios. This innovative design not only enhances the device's functionality but also improves the user experience, especially given the increasing demand for high-precision positioning services, making signal enhancement for GPS and other satellite communication systems particularly important.

[0077] Those skilled in the art will understand that the above embodiments are specific examples of implementing the present invention, and in practical applications, various changes can be made to them in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A terminal device, characterized in that, include: Antennas, metal decorative elements, displacement switches, and multiple differentiated grounding paths; Each of the grounding paths is grounded; the displacement switch is electrically connected to the metal decorative component, and the displacement switch can be switched to be electrically connected to one or more of the grounding paths to ground the metal decorative component.

2. The terminal device according to claim 1, characterized in that, At least a portion of the grounding path includes one or more radio frequency devices; The types and / or quantities of the radio frequency devices in different grounding paths are different, and / or the parameters of the radio frequency devices in different grounding paths are different.

3. The terminal device according to claim 2, characterized in that, The radio frequency device is one or more of an inductor, capacitor, resistor, or filter.

4. The terminal device according to claim 1, characterized in that, At least one of the grounding paths is a grounding conductor.

5. The terminal device according to claim 1, characterized in that, The replacement switch is a radio frequency switching device, which can be a single-pole multi-throw radio frequency switch, a PIN diode switch, a FET switch, a microelectromechanical system switch, or a programmable impedance tuning device.

6. The terminal device according to claim 1, characterized in that, The control signal for the displacement switch is provided by the processor's GPIO pins, the RF front-end controller, or the sensor control circuit.

7. The terminal device according to any one of claims 1 to 6, characterized in that, The metal decorative element is connected to different grounding paths, forming differentiated parasitic coupling relationships with the antenna.

8. The terminal device according to any one of claims 1 to 6, characterized in that, The terminal device also includes sensors and a circuit board module, wherein the sensors are used to identify the application scenario of the terminal device; Both the displacement switch and the sensor are connected to the circuit board module. The circuit board module is used to control the displacement switch to switch the grounding path after receiving the application scenario of the terminal device.

9. The terminal device according to claim 8, characterized in that, The sensor includes a specific absorption rate sensor and / or a gyroscope sensor.

10. The terminal device according to claim 1, characterized in that, The terminal device is a mobile phone or a tablet.

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