Dual-frequency GPS antenna device for smart watch

Abstract

The utility model relates to a kind of dual-frequency GPS antenna device of intelligent wristwatch, including the middle frame made of insulating material, metal watch ring and mainboard.LDS antenna main body electrically connected with mainboard is set on the middle frame, for forming GPS L1 resonance;Metal watch ring is electrically connected with mainboard and forms GPS L5 resonance by tuning circuit.The both as parasitic unit mutually coupled, jointly realize GPS L1+L5 dual-frequency function.The structure omits independent GPS L5 antenna, reduces installation area, and is applicable to small size wristwatch.

Description

Technical Field

[0001] This utility model relates to the field of smartwatch technology, and in particular to a dual-frequency GPS antenna device for a smartwatch. Background Technology

[0002] As a primary smart wearable product, GPS positioning is a fundamental function of smartwatches. Improving the quality of GPS satellite reception and the accuracy of positioning trajectories is crucial for enhancing the customer experience. Dual-frequency GPS eliminates ionospheric errors and reduces multipath interference by utilizing the differences between the two frequency satellite signals, resulting in higher GPS positioning accuracy compared to single-frequency GPS.

[0003] Current technology typically uses separate antennas for GPS L1 and GPS L5 to achieve dual-frequency GPS functionality. This method requires a large antenna area and is suitable for larger men's watches. However, some women's smartwatches are designed to be smaller than men's and medium-sized watches, making it difficult to deploy dual-frequency GPS antennas using the above method. Utility Model Content

[0004] This utility model provides a dual-frequency GPS antenna device for a smartwatch, aiming to solve the problem that it is difficult to deploy dual-frequency GPS function in small smartwatches by making two separate antennas.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] This utility model embodiment provides a dual-frequency GPS antenna device for a smart watch, comprising: a mid-frame made of insulating material, a metal bezel disposed on one side of the mid-frame, and a main board disposed within the mid-frame;

[0007] The middle frame is provided with an LDS antenna body that is electrically connected to the motherboard.

[0008] The metal bezel is electrically connected to the motherboard.

[0009] In one embodiment, the motherboard is provided with a Pogpin spring, which abuts against the LDS antenna body.

[0010] In one embodiment, the middle frame is provided with a through hole extending along its thickness direction, and a first metal pin is disposed in the through hole, with both ends of the first metal pin abutting against the motherboard and the metal bezel, respectively.

[0011] In one embodiment, the motherboard has an exposed copper ground plane, and the end of the first metal pin away from the metal bezel abuts against the exposed copper ground plane.

[0012] In one embodiment, a carrier plate is provided on the inner sidewall of the middle frame, and the LDS antenna body is disposed on the carrier plate.

[0013] In one embodiment, a sidewall groove is provided at the position corresponding to the carrier piece on the inner sidewall of the middle frame, and the main body of the LDS antenna is accommodated in the sidewall groove.

[0014] In one embodiment, a metal reflector is provided on the side of the main board away from the metal bezel; a plurality of second metal pins are provided between the metal reflector and the main board, and the plurality of second metal pins respectively abut against the main board and the metal reflector.

[0015] In one embodiment, a bottom shell that mates with the middle frame is also included, and the metal reflector is disposed between the main board and the bottom shell.

[0016] In one embodiment, four second metal pins are provided, and the four second metal pins are evenly distributed on the motherboard.

[0017] In one embodiment, a plurality of support plates are fixedly provided on the inner sidewall of the middle frame, and the support plates are provided with support holes. The main board is provided with mounting holes that cooperate with the plurality of support holes.

[0018] The advantages of this invention compared to existing technologies are as follows: the metal bezel, LDS antenna body, and motherboard work together to achieve a combined GPS L1+L5 antenna resonance, thus realizing a dual-frequency GPS L1+L5 effect. By using the mid-frame LDS antenna body and metal bezel as parasitic antennas, the separate GPS L5 antenna is eliminated. Furthermore, based on the 1 / 4 wavelength principle of electrically small antennas, only one GPS L1 resonance needs to be tuned, thus requiring a smaller area for installing the LDS antenna body. This reduces the antenna installation area, making it more suitable for deploying dual-frequency GPS functionality on small-sized watches.

[0019] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model, it can be implemented according to the contents of the specification. In order to make the above and other objects, features and advantages of this utility model more obvious and understandable, the following are preferred embodiments, which are described in detail below. Attached Figure Description

[0020] Figure 1 An exploded view of a dual-frequency GPS antenna device for a smartwatch provided in this embodiment of the present invention;

[0021] Figure 2 for Figure 1 A magnified view of a portion of region A in the middle;

[0022] Figure 3 Exploded view of the metal bezel, mid-frame, LDS antenna body, and motherboard of a dual-frequency GPS antenna device for a smartwatch provided in this embodiment of the utility model;

[0023] Figure 4 for Figure 3 A magnified view of a portion of region B in the middle;

[0024] Figure 5 A cross-sectional view of a dual-frequency GPS antenna device for a smartwatch provided in an embodiment of this utility model;

[0025] Figure 6 for Figure 5 A magnified view of a portion of region C in the middle;

[0026] Figure 7 for Figure 5 A magnified view of a portion of region D.

[0027] Figure label:

[0028] 1. Middle frame; 11. Support piece; 111. Support hole; 12. Through hole; 13. Bearing piece; 131. Side wall groove.

[0029] 2. Metal bezel;

[0030] 3. Motherboard, 31. Mounting hole, 32. Exposed copper ground;

[0031] 4. LDS antenna body;

[0032] 5. Pogpin spring;

[0033] 6. First metal ejector pin;

[0034] 7. Metal reflector;

[0035] 8. Second metal ejector pin;

[0036] 9. Bottom shell. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0038] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0039] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0040] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0041] Please see Figure 1 As shown, a dual-frequency GPS antenna device for a smartwatch includes: a mid-frame 1 made of insulating material, a metal bezel 2 disposed on one side of the mid-frame, and a main board 3 disposed within the mid-frame;

[0042] The middle frame is provided with an LDS antenna body 4 that is electrically connected to the motherboard;

[0043] The metal bezel is electrically connected to the motherboard.

[0044] In this application, the LDS antenna body 4 is placed inside a frame 1 made of insulating material. In this embodiment, the frame 1 is made of plastic material. The LDS antenna body 4 is electrically connected to the main board 3 to form a GPS L1 resonance. According to the principle of 1 / 4 wavelength of electrically small antennas, only one GPS L1 resonance is tuned here, so the area required to install the LDS antenna body 4 is small. The metal bezel 2 is electrically connected to the main board 3. The circuit matching the metal bezel 2 is tuned to GPS L5 resonance through the tuning circuit. Here, the metal bezel 2 acts as a parasitic unit and is close to and coupled to the GPS L1 resonance. Maintaining a certain distance of more than 1.5 mm between the LDS antenna body 4 and the metal bezel 2 can reduce the interference between the GPS L1 resonance and the GPS L5 resonance.

[0045] By combining the aforementioned metal bezel 2, LDS antenna body 4, and main board 3, a combined GPS L1+L5 antenna resonance is achieved, thus realizing the dual-frequency effect of GPS L1+L5. In this application, the mid-frame LDS antenna body 4 and metal bezel 2 are used as parasitic antennas, eliminating the need for a dedicated GPS L5 antenna, reducing the antenna installation area, and making it more suitable for deploying dual-frequency GPS functionality on small-sized wristwatches.

[0046] In one embodiment, such as Figure 1 As shown, a plurality of support plates 11 are fixedly provided on the inner sidewall of the middle frame 1, and support holes 111 are provided on the support plates 11. Mounting holes 31 that cooperate with the plurality of support holes 111 are provided on the main board 3.

[0047] In this embodiment, a support plate 11 is provided on the inner side wall of the middle frame 1 to facilitate the installation of the motherboard 3 in the internal space of the middle frame 1. At the same time, a mounting hole 31 is provided on the motherboard 3, which is connected to the support hole 111 to facilitate the fixing of the motherboard 3 and the middle frame 1.

[0048] In a further embodiment, such as Figure 2 As shown, a carrier plate 13 is provided on the inner side wall of the middle frame 1, and the LDS antenna body 4 is disposed on the carrier plate 13.

[0049] The carrier plate 13 is used to support the LDS antenna body 4, which facilitates the installation of the LDS antenna body 4.

[0050] In one embodiment, such as Figure 2 As shown, a side wall groove 131 is provided at the position corresponding to the carrier piece 13 on the inner side wall of the middle frame 1, and the LDS antenna body 4 is partially accommodated in the side wall groove 131.

[0051] During installation, the LDS antenna body 4 is partially snapped into the side wall groove 131. This allows the LDS antenna body 4 to be placed in the side wall groove 131 before the main board 3 is installed, facilitating the installation of the LDS antenna body 4. Simultaneously, the side wall groove 131 fully utilizes the space within the inner side wall of the middle frame 1, improving overall space utilization and making it suitable for smaller wristwatches.

[0052] In a further embodiment, such as Figure 3 As shown, the motherboard 3 has an exposed copper ground 32, and the end of the first metal pin 6 away from the metal bezel 2 abuts against the exposed copper ground 32.

[0053] In this embodiment, the first metal pin 6 abuts against the exposed copper ground 32 directly on the motherboard 3.

[0054] In a further embodiment, such as Figure 3 and Figure 4 As shown, the motherboard 3 is provided with a Pogpin spring 5, which abuts against the LDS antenna body 4.

[0055] The LDS antenna body 4 is connected to the motherboard 3 via a Pogpin spring 5. The spring has a certain degree of elasticity, which can ensure that the LDS antenna body 4 and the motherboard 3 remain connected.

[0056] In a further embodiment, such as Figure 5 and Figure 6 As shown, the middle frame 1 is provided with a through hole 12 extending along its thickness direction, and a first metal pin 6 is provided in the through hole 12. The two ends of the first metal pin 6 abut against the main board 3 and the metal bezel 2, respectively.

[0057] In this embodiment, the first metal pin 6 ensures that the main board 3 and the metal bezel 2 are electrically connected. The first metal pin 6 is elastic and can extend and retract within a certain range, thereby ensuring that the metal bezel 2 and the main board 3 are electrically connected, making the overall structure more stable.

[0058] In one embodiment, such as Figure 5 and Figure 7 As shown, a metal reflector 7 is provided on the side of the main board 3 away from the metal bezel 2; a plurality of second metal pins 8 are provided between the metal reflector 7 and the main board 3, and the plurality of second metal pins 8 respectively abut against the main board 3 and the metal reflector 7.

[0059] The middle frame 1 is provided with a bottom shell 9 that cooperates with it, and the metal reflector 7 is disposed between the main board 3 and the bottom shell 9.

[0060] In this embodiment, the metal reflector 7 reflects the radiation emitted by the antenna towards the arm, thereby improving the overall antenna performance of the watch when it is worn on the arm. In other words, the reflective effect of the metal reflector 7 enhances the antenna performance of the watch when it is worn on the arm.

[0061] In practical implementation, the number or position of the second metal pins 8 between the metal reflector 7 and the main board 3 can be changed to optimize the antenna performance when the watch is worn on the arm. In this embodiment, four second metal pins 8 are provided, and the four second metal pins 8 are evenly distributed on the main board 3. In this embodiment, the four metal pins are distributed on the main board 3 in a rectangular structure.

[0062] In one embodiment, a band-stop filter circuit is connected between the tuning circuit of the metal bezel 2 and the ground pin of the motherboard.

[0063] By connecting a band-stop filter circuit between the tuning circuit of the metal bezel 2 and the ground pin of the motherboard, the band-stop filter circuit can filter out the GPS L1 resonance, ensuring that the GPS L1 and GPS L5 resonances do not interfere with each other. Furthermore, maintaining an appropriate distance between the metal bezel 2 and the LDS antenna body 4 reduces the impact of the metal bezel 2 on the LDS antenna body 4.

[0064] The working principle of the dual-frequency GPS antenna device for a smartwatch in this embodiment is as follows:

[0065] In this application, the LDS antenna body 4 is placed inside the middle frame 1 made of insulating material. The LDS antenna body 4 is electrically connected to the main board 3 through the Pogpin spring 5 to form a GPS L1 resonance. The metal bezel 2 is electrically connected to the main board 3 through the first metal pin 6. The tuning circuit tunes the metal bezel 2 to GPS L5 resonance through the tuning and matching circuit.

[0066] By cooperating with the aforementioned metal bezel 2, LDS antenna body 4, and mainboard 3, a combined GPS L1+L5 antenna resonance is achieved, thus realizing the dual-frequency effect of GPS L1+L5. In this application, the mid-frame LDS antenna body 4 and metal bezel 2 are used as parasitic antennas, eliminating the need for a separate GPS L5 antenna. Furthermore, based on the principle of a quarter-wavelength electrically small antenna, only one GPS L1 resonance is tuned here, thus requiring a smaller area for installing the LDS antenna body 4. This further reduces the antenna installation area, making it more suitable for deploying dual-frequency GPS functionality on small-sized wristwatches.

[0067] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A dual-frequency GPS antenna device for a smartwatch, characterized in that, include: A mid-frame made of insulating material, a metal bezel disposed on one side of the mid-frame, and a main board disposed within the mid-frame; The middle frame is provided with an LDS antenna body that is electrically connected to the motherboard. The metal bezel is electrically connected to the motherboard. 2.The dual-frequency GPS antenna device of a smart watch according to claim 1, wherein, The motherboard is equipped with a Pogpin spring, which abuts against the LDS antenna body. 3.The dual-frequency GPS antenna device of a smart watch according to claim 1, wherein, The middle frame is provided with a through hole extending along its thickness direction, and a first metal pin is provided in the through hole. The two ends of the first metal pin abut against the motherboard and the metal bezel, respectively. 4.The dual-frequency GPS antenna device of a smart watch according to claim 3, wherein, The motherboard has an exposed copper ground plane, and the end of the first metal pin away from the metal bezel abuts against the exposed copper ground plane. 5.The dual-frequency GPS antenna device of a smart watch according to claim 1, wherein, The inner sidewall of the middle frame is provided with a carrier plate, and the LDS antenna body is disposed on the carrier plate. 6.The dual-frequency GPS antenna device of a smart watch according to claim 5, wherein, A sidewall groove is provided at the position corresponding to the carrier piece on the inner sidewall of the middle frame, and the main body of the LDS antenna is accommodated in the sidewall groove. 7.The dual-frequency GPS antenna device of a smart watch according to any one of claims 1 to 6, characterized in that, A metal reflector is provided on the side of the main board away from the metal bezel; a plurality of second metal pins are provided between the metal reflector and the main board, and the plurality of second metal pins respectively abut against the main board and the metal reflector. 8.The dual-frequency GPS antenna device of a smart watch according to claim 7, wherein, It also includes a bottom shell that mates with the middle frame, and the metal reflector is disposed between the main board and the bottom shell. 9.The dual-frequency GPS antenna device of a smart watch according to claim 7, wherein, The second metal pin is provided in four parts, which are evenly distributed on the motherboard.

10. The dual-frequency GPS antenna device of the smart watch according to any one of claims 1 to 6, characterized in that, The inner sidewall of the middle frame is fixedly provided with a number of support plates, and the support plates are provided with support holes. The main board is provided with mounting holes that cooperate with the support holes.

Images