Lightweight and miniaturized GPS antenna

Abstract

The utility model provides a lightweight miniaturized GPS antenna, comprising an antenna body, the antenna body is provided with a clearance zone, circuit connection boards and a matching network, the circuit connection boards are arranged at two sides of the clearance zone, the clearance zone is provided with a chip antenna, the configuration of the clearance zone is matched with the chip antenna and the circuit connection boards, and the matching network is connected with the chip antenna and the circuit connection boards. The matching network is led out through a feeding point of the chip antenna, the size and the shape of a clearance area are designed in a customized mode, the matching network is matched with the chip antenna and a circuit connecting plate, and fine debugging of the matching network is carried out, so that the bandwidth performance of the antenna is widened, and the adaptability and the stability of the antenna in a complex application environment are improved. Therefore, multiple requirements of modern electronic equipment on high performance, miniaturization and light weight of the antenna can be met.

Description

Technical Field

[0001] This utility model relates to the field of antenna manufacturing technology, specifically to a lightweight and miniaturized GPS antenna. Background Technology

[0002] With the rapid development of modern electronic technology, various electronic products such as smartphones, tablets, and wearable devices have become deeply integrated into people's daily lives. These electronic products not only require excellent functionality and performance, but also increasingly emphasize appearance design, user experience, and network performance. Among them, the antenna, as a key component responsible for signal transmission and reception in electronic products, directly affects the product's network performance, positioning accuracy, and overall user experience.

[0003] Currently, people's demand for network performance in electronic products is increasing, making antenna technology a focal point of product promotion and market competition. Traditional antenna designs often employ standardized solutions, making it difficult to meet the personalized needs of different products in terms of antenna performance, size, and weight. Especially in positioning functions, with the continuous advancement of GPS technology and the expansion of application scenarios, dual (multi)-band GPS ceramic antennas have gradually become the mainstream trend. However, these antennas have disadvantages such as large size and heavy weight, which undoubtedly increases the design and manufacturing difficulty for electronic products that pursue thinness and miniaturization.

[0004] Furthermore, traditional antennas often rely on a single debugging method during the debugging process, requiring significant clearance and height. Without sufficient clearance and height, the antenna's bandwidth is typically narrow, and its efficiency is low, making it difficult to meet the demands for wide bandwidth and high efficiency. This problem is particularly prominent in current electronic product design. As electronic products evolve towards multi-functionality, large screens, all-metal construction, and narrow bezels, antenna installation space is severely limited. How to design high-performance antennas within limited space has become a pressing technical challenge for the industry.

[0005] To address the aforementioned issues, the industry has begun exploring new antenna design solutions. Among these, customized clearance design, optimized circuit board layout, and precise tuning of matching networks have received widespread attention and research. The core of these methods lies in enabling the antenna to achieve optimal performance within a limited installation space through precise design and tuning. However, existing technical solutions still have many shortcomings, such as high design complexity, high manufacturing costs, and significant tuning difficulties, which limit their widespread application in electronic products.

[0006] The above background information is provided only to assist in understanding the utility model concept and technical solution of this utility model. It does not necessarily belong to the prior art of this patent application, nor does it necessarily provide technical teaching. In the absence of clear evidence that the above information was disclosed before the filing date of this patent application, the above background information should not be used to evaluate the novelty and inventiveness of this application. Utility Model Content

[0007] To address the aforementioned technical issues, this invention proposes a lightweight and miniaturized GPS antenna. By customizing the size and shape of the clearance area to match the chip antenna and circuit board, and through fine-tuning of the matching network, it aims to broaden the antenna's bandwidth performance and improve its adaptability and stability in complex application environments, thereby meeting the multiple demands of modern electronic devices for high-performance, miniaturized, and lightweight antennas.

[0008] To achieve the above objectives, the technical solution of this utility model is as follows:

[0009] This utility model provides a lightweight and miniaturized GPS antenna, including: an antenna body, on which a clearance area, a circuit connection board and a matching network are provided, the circuit connection board is disposed on both sides of the clearance area, a chip antenna is mounted on the clearance area, the configuration of the clearance area is adapted to the chip antenna and the circuit connection board, and the matching network is led out through the feed point of the chip antenna.

[0010] This invention proposes a lightweight and miniaturized GPS antenna. By customizing the size and shape of the clearance area to match the chip antenna and circuit board, and through fine-tuning of the matching network, it aims to broaden the antenna's bandwidth performance and improve its adaptability and stability in complex application environments, so as to meet the multiple requirements of modern electronic devices for high performance, miniaturization and lightweight antennas.

[0011] As a preferred technical solution, the matching network includes a π-type matching network, which is used to adjust the impedance of the L1 band, and the π-type matching network is led out through the feed point of the chip antenna.

[0012] As a preferred technical solution, it includes: a terminal, and the antenna body is further provided with a feed point, the feed point being located near the π-type matching network, and the feed point being connected to the feed line through the terminal.

[0013] As a preferred technical solution, the circuit connection board is provided with an irregularly shaped wire assembly, which serves as part of the antenna grounding and extends around the circuit connection board.

[0014] As a preferred technical solution, the irregularly shaped wire assembly includes: multiple antenna frequency adjustment lines, wherein the lengths of the antenna frequency adjustment lines are not consistent, and the antenna frequency is adjusted by adjusting the length of at least one antenna frequency adjustment line in the irregularly shaped wire assembly.

[0015] As a preferred technical solution, at least one of the antenna frequency adjustment lines is connected to one end of the circuit connection board, and the remaining antenna frequency adjustment lines are connected to the other end of the circuit connection board.

[0016] As a preferred technical solution, when the length of at least one of the antenna frequency adjustment lines becomes shorter, the antenna frequency shifts to a higher frequency band; when the length of at least one of the antenna frequency adjustment lines becomes longer, the antenna frequency shifts to a lower frequency band.

[0017] As a preferred technical solution, the matching network includes a dual L-shaped matching network, which is led out through the feed point of the chip antenna.

[0018] As a preferred technical solution, the dual L-shaped matching network is used to adjust the L5 band impedance at the series connection position near the chip antenna, and the remaining multiple matching positions are used to adjust the L1 band impedance or to tune both the L1 band impedance and the L5 band impedance.

[0019] As a preferred technical solution, it includes: a terminal, and the antenna body is further provided with a feed point, the feed point being located near the dual L-shaped matching network, and the feed point being connected to the feed line through the terminal.

[0020] The lightweight and miniaturized GPS antenna provided by this utility model has the following beneficial effects:

[0021] 1) By customizing the size and shape of the clearance area to match the chip antenna and circuit board, and through fine tuning of the matching network, the aim is to broaden the antenna bandwidth performance and improve the antenna's adaptability and stability in complex application environments, so as to meet the multiple requirements of modern electronic devices for high performance, miniaturization and lightweight antennas.

[0022] 2) Customize the size and shape of the clearance area to optimize key indicators such as antenna bandwidth performance, gain, and radiation pattern; ensure that the chip antenna can work normally within the clearance area without interference from surrounding structures; the design of the circuit board should facilitate electrical connection with the chip antenna and ensure the stability of signal transmission; the size and shape of the clearance area should match the chip antenna; optimize the layout and routing of the circuit board to reduce signal loss and interference.

[0023] Matching networks are used to tune the impedance of an antenna to match the transmission line or receiver, thereby optimizing signal transmission efficiency and enhancing the stability and reliability of the antenna for signal transmission.

[0024] Through customized design and meticulous tuning, the antenna performs excellently in key indicators such as bandwidth, gain, and radiation pattern. While maintaining high performance, the antenna's miniaturization design was achieved by optimizing its structure and layout, meeting the stringent space utilization requirements of modern electronic devices.

[0025] In summary, the antenna design provided by this utility model effectively broadens the antenna's bandwidth performance and improves its adaptability and stability in complex application environments through methods such as customized design of the clearance area, adaptation to chip antennas and circuit connection boards, and fine-tuning of the matching network. At the same time, this design also meets the multiple requirements of modern electronic devices for high-performance, miniaturized, and lightweight antennas.

[0026] 3) The purpose of the lightweight and miniaturized GPS antenna solution provided by this utility model is to provide an antenna solution that can be both lightweight and compact, applicable to complex antenna environments, and without reducing antenna efficiency. Attached Figure Description

[0027] Figure 1 A front view of the lightweight, miniaturized GPS antenna provided in Example 1;

[0028] Figure 2 Rear view of the lightweight, miniaturized GPS antenna provided in Embodiment 1;

[0029] Figure 3 A front view of the lightweight, miniaturized GPS antenna provided in Embodiment 2;

[0030] Figure 4 Rear view of the lightweight, miniaturized GPS antenna provided in Embodiment 2;

[0031] Figure 5 The test results diagram for the lightweight miniaturized GPS antenna provided in Example 1;

[0032] Figure 6 The antenna field pattern (vertical direction) of the lightweight miniaturized GPS antenna provided in Example 1;

[0033] Figure 7 The test results diagram for the lightweight miniaturized GPS antenna provided in Example 2;

[0034] Figure 8 The antenna field pattern (vertical direction) of the lightweight miniaturized GPS antenna provided in Example 2;

[0035] Among them, 1-antenna body; 2-clearance area; 3-circuit connection board; 4-matching network; 41-π-type matching network; 42-dual L-type matching network; 5-chip antenna; 6-terminal; 7-irregular wire assembly; 8-antenna frequency adjustment line; 9-feed point. Detailed Implementation

[0036] The preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0037] like Figure 1-4 As shown, this utility model provides a lightweight and miniaturized GPS antenna, including: an antenna body 1, on which a clearance area 2, a circuit connection board 3 and a matching network 4 are provided. The circuit connection board 3 is disposed on both sides of the clearance area 2. A chip antenna 5 is installed on the clearance area 2. The configuration of the clearance area 2 is adapted to the chip antenna 5 and the circuit connection board 3. The matching network 4 is led out through the feed point of the chip antenna 5.

[0038] This invention provides a lightweight and miniaturized GPS antenna. By customizing the size and shape of the clearance area to match the chip antenna and circuit board, and through fine tuning of the matching network, it aims to broaden the antenna bandwidth performance and improve the antenna's adaptability and stability in complex application environments, so as to meet the multiple requirements of modern electronic devices for high performance, miniaturization and lightweight antennas.

[0039] Preferably, the circuit connection boards 3 are correspondingly arranged on both sides of the clearance area 2; the corresponding arrangement of the circuit connection boards 3 on both sides of the clearance area 2 plays a role in space optimization and layout flexibility in the above technical solution;

[0040] Preferably, the size and shape of the clearance area 2 are customized according to the selected chip antenna 5 (chip antenna size and performance) and the actual area of ​​the circuit connection board 3 to form a clearance area 2 that matches the chip antenna 5 and the circuit connection board 3, thereby improving antenna performance and bandwidth, while also taking into account the characteristics of frequency offset adjustment. This clearance area 2 is not limited to the design shown in the figure. Clearance areas with different shapes and sizes can be designed according to the scheme and are all within the scope of protection of this application.

[0041] Preferably, the chip antenna 5 is placed centrally on the antenna body 1, and the circuit connection board 3 is set on both sides of the clearance area 2. The grounding size of the circuit connection board 3 will affect the antenna's efficiency, gain and other performance. The larger the grounding size of the circuit connection board 3 on both sides, the higher the antenna's efficiency and gain, further improving the antenna performance and bandwidth, while also taking into account the characteristics of frequency offset adjustment.

[0042] The size and shape of the clearance area 2 are customized to optimize key indicators such as the antenna's bandwidth performance, gain, and radiation pattern; to ensure that the chip antenna 5 can work normally within the clearance area 2 without interference from surrounding structures; the design of the circuit connection board 3 facilitates electrical connection with the chip antenna 5 and ensures the stability of signal transmission; the size and shape of the clearance area 2 are matched with the chip antenna; the layout and wiring of the circuit connection board 3 are optimized to reduce signal loss and interference.

[0043] Matching network 4 is used to adjust the impedance of the antenna to match the transmission line or receiver, thereby optimizing signal transmission efficiency and enhancing the stability and reliability of the antenna for signal transmission.

[0044] Through customized design and meticulous tuning, the antenna performs excellently in key indicators such as bandwidth, gain, and radiation pattern. While maintaining high performance, the antenna's miniaturization design was achieved by optimizing its structure and layout, meeting the stringent space utilization requirements of modern electronic devices.

[0045] In summary, the antenna design provided by this utility model effectively broadens the bandwidth performance of the antenna and improves its adaptability and stability in complex application environments through methods such as customized design of the clearance area 2, adaptation to the chip antenna 5 and circuit connection board 3, and fine debugging of the matching network 4. At the same time, the design also meets the multiple requirements of modern electronic devices for high performance, miniaturization and lightweight antennas.

[0046] Preferably, such as Figure 1-2 As shown, the matching network 4 includes a π-type matching network 41, which is used to adjust the impedance of the L1 band. The π-type matching network is led out through the feed point of the chip antenna 5.

[0047] The three matching positions of the π-type matching network 41 are for adjusting the impedance of the L1 band. The specific steps include: First, it is necessary to confirm the quadrant of the L1 frequency point on the original Smith diagram in the series 0Ω state. Following the adjustment principle of left parallel and right series, upper parallel and lower series, the L1 frequency point is made close to the 50Ω impedance by combining capacitors and inductors of different values.

[0048] The π-type matching network 41 is designed to tune the impedance of the L1 band. Impedance matching can not only reduce signal reflection and loss, but also improve the efficiency and stability of the antenna. When the antenna is impedance matched with the RF front-end circuit, the signal can be transmitted to the antenna and radiated more efficiently, thereby improving the antenna's radiation efficiency. At the same time, reducing reflection and loss also helps to reduce the antenna's heat generation and noise interference, and improve its stability in complex application environments.

[0049] Preferably, such as Figure 1-2As shown, it includes: terminal 6, and the antenna body 1 is also provided with a feed point 9. The feed point 9 is located near the π-type matching network 41. The feed point 9 is connected to the feed line through terminal 6. The feed point 9 is the connection point between the antenna and the feed line. It is responsible for transmitting the radio frequency signal from the feed line to the antenna body 1, or transmitting the signal received by the antenna to the feedback line. Through the feed point, the radio frequency signal can be transmitted efficiently and stably between the antenna and the radio frequency circuit system.

[0050] The location and connection method of the feed point 9 have a significant impact on the performance of the antenna. Setting the feed point 9 near the π-type matching network 41 can further optimize the impedance matching characteristics of the antenna, improve the radiation efficiency and gain of the antenna. At the same time, by precisely controlling the connection method and quality between the feed point 9 and the antenna body 1, the antenna loss and noise interference can be reduced, and its adaptability and stability in complex application environments can be improved.

[0051] The feed point 9 is connected to the feed line via terminal 6. This connection method facilitates installation and maintenance, and improves the maintainability and service life of the antenna.

[0052] Preferably, such as Figure 3-4 As shown, the circuit connection board 3 is provided with an irregularly shaped wire assembly 7, which serves as part of the antenna grounding and extends around the circuit connection board 3. The irregularly shaped wire assembly 7 is preferably a serpentine wire assembly, a wavy wire assembly, or other irregularly shaped wire assemblies. All irregularly shaped components 7 are within the scope of protection of this application. The antenna frequency adjustment line 8 in this irregularly shaped wire assembly 7 is not limited to the design shown in the figure; different forms can be designed and modified according to the scheme, all of which are within the scope of protection of this application.

[0053] Preferably, such as Figure 3-4 As shown, the irregular wire assembly 7 includes: multiple antenna frequency adjustment lines 8, wherein the lengths of each antenna frequency adjustment line 8 are not the same. The antenna frequency can be adjusted by adjusting the length of at least one antenna frequency adjustment line 8 in the irregular wire assembly 7.

[0054] Preferably, such as Figure 3-4 As shown, at least one of the antenna frequency adjustment lines 8 is connected to one end of the circuit connection board 3, and the remaining antenna frequency adjustment lines 8 are connected to the other end of the circuit connection board 3.

[0055] Preferably, such as Figure 3-4 As shown, the circuit design of some parts of the irregular wire assembly 7 follows the design of 1 / 4 wavelength of the antenna frequency band. When the length of at least one of the antenna frequency adjustment lines 8 becomes shorter, the antenna frequency shifts to the higher frequency band; when the length of at least one of the antenna frequency adjustment lines 8 becomes longer, the antenna frequency shifts to the lower frequency band.

[0056] The irregular wire assembly 7, as part of the antenna grounding, extends around the surface of the circuit connection board 3, ensuring the stability and reliability of the antenna grounding. Grounding is a crucial aspect of antenna design, affecting the antenna's performance, stability, and safety.

[0057] By adjusting the length of at least one antenna frequency adjustment line 8 in the irregular wire assembly 7, the antenna frequency can be precisely adjusted; this design enables the antenna to adapt to different operating frequency requirements, improving the antenna's flexibility and applicability.

[0058] By adjusting the length of the antenna frequency adjustment line 8, the bandwidth of the antenna can be widened, enabling it to maintain stable performance over a wider frequency range. This is especially important for antenna applications that need to cover multiple frequency bands, thus widening the bandwidth.

[0059] A well-designed irregular wire assembly 7 can improve the antenna gain, resulting in stronger signal strength and longer transmission distance when receiving and transmitting signals.

[0060] The winding extension of the irregular wire assembly 7 can reduce interference between the antenna and other electronic components and improve the antenna's anti-interference capability, which is especially important for antennas working in complex electromagnetic environments to reduce interference.

[0061] When the length of at least one antenna frequency adjustment line 8 is shortened, the antenna frequency will shift to a higher frequency band. This design enables the antenna to adapt to the application requirements of high frequency bands, such as radar and satellite communication.

[0062] When the length of at least one antenna frequency adjustment line 8 increases, the antenna frequency will shift to a lower frequency band. This design is suitable for low-frequency applications such as mobile communication and the Internet of Things.

[0063] By adjusting the length combinations of different antenna frequency adjustment lines 8, the antenna frequency can be flexibly adjusted to meet different application scenarios and performance requirements.

[0064] The irregular wire assembly 7 is designed to facilitate manufacturing and maintenance. In actual production, the length and layout of the antenna frequency adjustment line 8 can be adjusted as needed to adapt to different antenna design requirements. At the same time, this design also facilitates maintenance or replacement when needed, improving the maintainability and service life of the antenna.

[0065] In summary, the irregular wire assembly 7 on the circuit connection board 3 and its multiple antenna frequency adjustment lines 8 play a key role in the antenna technology solution, including antenna grounding and frequency adjustment, optimization of antenna performance, realization of frequency adjustability, and ease of manufacturing and maintenance. These functions together improve the overall performance and effectiveness of the antenna, enabling it to adapt to different application scenarios and performance requirements.

[0066] Preferably, such as Figure 3-4 As shown, the matching network 4 includes a dual L-shaped matching network 42, which is led out through the feed point of the chip antenna 5;

[0067] Preferably, such as Figure 3-4 As shown, the dual L-shaped matching network 42 is located near the chip antenna 5 in series for adjusting the L5 band impedance, and the remaining multiple matching positions are for adjusting the L1 band impedance or for tuning both the L1 band impedance and the L5 band impedance.

[0068] Preferably, such as Figure 3-4 As shown, the position closest to the chip antenna 5 in series is for adjusting the L5 band impedance. The remaining three matching positions are for adjusting the L1 band impedance or for tuning both the L1 and L5 band impedances together. The specific method for adjusting the band impedance includes the following steps:

[0069] S1 is connected to the chip antenna 5 in series with a small capacitor, typically between 0.3 and 0.75 pF, to tune the L5 frequency band to the approximate desired Smith chart position, usually tuned to the third quadrant of the Smith chart.

[0070] S2, based on step S1, observes the quadrant position of the L1 frequency point on the Smith chart. Using the tuning principle of the Smith chart, the remaining π-type matching bits are used to tune the L1 frequency band through a combination of capacitors and inductors. This will also affect the L5 frequency band, but the change in the L5 frequency band is less than that in the L1 frequency band, thus keeping both the L1 and L5 frequency bands close to the 50Ω impedance.

[0071] One of the L-shaped networks in the dual L-shaped matching network 42 is located near the series connection of the chip antenna and is specifically used to adjust the impedance of the L5 band. By adjusting the parameters of components such as inductors and capacitors in the L-shaped network, the impedance matching characteristics of the antenna in the L5 band can be optimized to ensure efficient signal transmission in this band.

[0072] The remaining multiple matching positions are used to adjust the impedance of the L1 band, or simultaneously adjust the impedance of the L1 and L5 bands. This design enables the antenna to maintain good impedance matching characteristics across multiple frequency bands, thereby broadening the application range of the antenna and satisfying the requirements for frequency band impedance adjustment.

[0073] By adjusting the dual L-type matching network 42, the bandwidth of the antenna can be widened, enabling it to maintain stable performance over a wider frequency range. This is especially important for antenna applications that need to cover multiple frequency bands, thus widening the bandwidth.

[0074] Optimized impedance matching characteristics help improve antenna gain and radiation efficiency, resulting in stronger signal strength and longer transmission distance when receiving and transmitting signals, thus improving gain and efficiency.

[0075] Good impedance matching can reduce signal reflection and loss, reduce interference between the antenna and other electronic components, improve the antenna's anti-interference capability and signal transmission quality, and reduce interference and loss.

[0076] The design of the dual L-type matching network 42 enables the antenna to adapt to different frequency band requirements. Whether it is the L1 band, L5 band alone, or a combination of the two, good impedance matching can be achieved by adjusting the parameters of the matching network.

[0077] By adjusting the different component parameter combinations in the dual L-type matching network 42, the antenna frequency and impedance can be flexibly adjusted to meet different application scenarios and performance requirements.

[0078] The design of the dual L-type matching network 42 is relatively simple and easy to manufacture. At the same time, this design also facilitates the maintenance or replacement of components in the matching network when needed, improving the maintainability and service life of the antenna.

[0079] Preferably, such as Figure 3-4 As shown, it includes: terminal 6; the antenna body 1 is also provided with a feed point; the feed point is located near the dual L-shaped matching network 42; the feed point 9 is connected to the feed line through terminal 6.

[0080] The feed point 9 is located near the dual L-shaped matching network 42, which helps to achieve impedance matching between the antenna and the feed line. The dual L-shaped matching network 42 itself is designed to optimize the impedance characteristics of the antenna in different frequency bands. As a key node connecting the antenna and the feed line, the position and connection method of the feed point 9 are crucial to impedance matching. By precisely controlling the distance and connection method between the feed point 9 and the dual L-shaped matching network 42, the impedance matching characteristics of the antenna can be further optimized, and signal reflection and loss can be reduced.

[0081] The location and connection method of the feed point 9 will affect the frequency response of the antenna. Setting the feed point 9 near the dual L-type matching network 42 will help optimize the frequency response characteristics of the antenna in the target frequency band and improve the antenna gain and radiation efficiency.

[0082] Good impedance matching and signal transmission can improve the stability of an antenna, enabling it to maintain stable performance in complex electromagnetic environments. This is especially important for antenna applications that require stable operation over long periods of time, thereby improving antenna performance.

[0083] The feed point 9 is connected to the feed line via terminal 6. This connection method facilitates installation and disassembly, ensuring a firm and reliable connection between the feed point and the feed line, improving the maintainability of the antenna, and reducing maintenance costs.

[0084] In summary, the feed point 9, connected to the feed line via terminal 6 and positioned near the dual L-shaped matching network 42, plays a crucial role in signal transmission and impedance matching, improving antenna performance, and facilitating installation and maintenance in the antenna design. These functions collectively enhance the overall performance and usability of the antenna, enabling it to adapt to different application scenarios and performance requirements.

[0085] The circuit connection board 3 is preferably either a flexible printed circuit board (FPC) or a printed circuit board (PCB);

[0086] The antenna frequency bands applicable to this solution include, but are not limited to, any one or both of the L1 and L5 frequency bands shown in the above examples. It can also be used for antenna design in other frequency bands. The implementation method is similar. By changing the model of the chip antenna 5, the clearance area 2, the size of the circuit connection board 3, and the matching network 4, it can be adjusted to the required corresponding frequency band.

[0087] The lightweight and miniaturized GPS antenna provided by this utility model can be applied to various antenna applications such as laptops, tablets, mobile phones, 3C electronic products, automobiles, and drones in various complex antenna environments.

[0088] Example 1

[0089] This utility model provides a lightweight and miniaturized GPS antenna, comprising: an antenna body 1 and a terminal 6. The antenna body 1 is provided with a clearance area 2, a circuit connection board 3, and a π-type matching network 41. The circuit connection board 3 is disposed on both sides of the clearance area 2. A chip antenna 5 is mounted on the clearance area 2. The configuration of the clearance area 2 is adapted to the chip antenna 5 and the circuit connection board 3. The π-type matching network 41 is led out through the feed point of the chip antenna 5. The antenna body 1 is also provided with a feed point 9, which is located near the π-type matching network 41. The feed point 9 is connected to a feed line through the terminal 6.

[0090] The three matching positions of the π-type matching network 41 are used to adjust the impedance of the L1 band. The specific steps include: First, it is necessary to confirm the quadrant of the L1 frequency point on the original Smith chart in the 0Ω series state. Following the adjustment principle of left parallel connection and right series connection, upper parallel connection and lower series connection, different combinations of capacitors and inductors are used to make the L1 frequency point approach a 50Ω impedance. The parameters of the lightweight miniaturized GPS antenna provided in Example 1 are shown in Tables 1-3 below:

[0091] Table 1. Parameters of the lightweight miniaturized GPS antenna provided in Example 1

[0092]

[0093] Table 2 shows the parameters of the lightweight, miniaturized GPS antenna provided in Example 1.

[0094]

[0095] Table 3. Parameters of the lightweight miniaturized GPS antenna provided in Example 1

[0096]

[0097]

[0098] From Table 1-3, Figure 5 The test data shows that the antenna has good efficiency and bandwidth, which meets the positioning requirements. From Figure 6 The antenna field pattern shows that the antenna radiation is mainly concentrated in the upper hemisphere, with significant suppression in the lower hemisphere, which meets the requirements of GPS antenna usage scenarios. By customizing the size and shape of the clearance area to match the chip antenna 5 and circuit connection board 3, and through fine-tuning of the matching network, the aim is to broaden the antenna bandwidth performance and improve the antenna's adaptability and stability in complex application environments, so as to meet the multiple requirements of modern electronic devices for high performance, miniaturization and lightweight antennas.

[0099] Example 2

[0100] This utility model provides a lightweight and miniaturized GPS antenna, including: an antenna body 1 and terminals 6. The antenna body 1 has a clearance area 2, a circuit connection board 3, and a dual L-shaped matching network 42. The circuit connection board 3 is disposed on both sides of the clearance area 2. A chip antenna 5 is mounted on the clearance area 2. The configuration of the clearance area 2 is adapted to the chip antenna 5 and the circuit connection board 3. The dual L-shaped matching network 42 is led out through the feed point of the chip antenna 5. The series connection position of the dual L-shaped matching network 42 near the chip antenna 5 is for adjusting the L5 band impedance, and the remaining multiple matching positions are for adjusting the L1 band impedance or for tuning both the L1 band impedance and the L5 band impedance. The circuit connection board 3 has a shaped wire assembly 7, which serves as part of the antenna grounding. The antenna frequency adjustment lines are arranged around the connection board 3. The irregular wire assembly 7 includes multiple antenna frequency adjustment lines 8, wherein the lengths of the antenna frequency adjustment lines 8 are not consistent. The antenna frequency is adjusted by adjusting the length of at least one antenna frequency adjustment line 8 in the irregular wire assembly 7. At least one antenna frequency adjustment line 8 is connected to one end of the circuit connection board 3, and the remaining antenna frequency adjustment lines 8 are connected to the other end of the circuit connection board 3. When the length of at least one antenna frequency adjustment line 8 becomes shorter, the antenna frequency shifts to the higher frequency band. When the length of at least one antenna frequency adjustment line 8 becomes longer, the antenna frequency shifts to the lower frequency band. The antenna body 1 is also provided with a feed point 9, which is located near the double L-shaped matching network 42. The feed point 9 is connected to the feed line through a terminal 6.

[0101] The position closest to the chip antenna 5 in series is for adjusting the L5 band impedance. The remaining three matching positions are for adjusting the L1 band impedance or for tuning both the L1 and L5 band impedances together. The specific method for adjusting the band impedance includes the following steps:

[0102] S1 is connected in series with the chip antenna 5 via a small capacitor with a capacitance of 0.55pF to tune the L5 frequency band to approximately the desired Smith chart position, typically tuned to the third quadrant of the Smith chart.

[0103] S2, based on the first step, observes the quadrant position of the L1 frequency point on the Smith chart. Using the tuning principle of the Smith chart, the remaining π-type matching bits are used to tune the L1 frequency band via a combination of capacitors and inductors. This will also affect the L5 frequency band, but the change in the L5 frequency band is less than that in the L1 frequency band, thus keeping both the L1 and L5 frequency bands close to the 50Ω impedance. The parameters of the lightweight miniaturized GPS antenna provided in Example 2 are shown in Table 4-7 below:

[0104] Table 4 shows the parameters of the lightweight, miniaturized GPS antenna provided in Example 2.

[0105]

[0106] Table 5. Parameters of the lightweight miniaturized GPS antenna provided in Example 2

[0107]

[0108]

[0109] Table 6 shows the parameters of the lightweight, miniaturized GPS antenna provided in Example 2.

[0110]

[0111] Table 7 Parameters of the lightweight miniaturized GPS antenna provided in Example 2

[0112]

[0113] From Table 4-7, Figure 7 The test data shows that the antenna has good efficiency and bandwidth, which meets the positioning requirements. From... Figure 8 The antenna field pattern shows that the antenna radiation is mainly concentrated in the upper hemisphere, with significant suppression in the lower hemisphere, which meets the requirements of GPS antenna usage scenarios. By customizing the size and shape of the clearance area to match the chip antenna and circuit board, and through fine-tuning of the matching network, the aim is to broaden the antenna bandwidth performance and improve the antenna's adaptability and stability in complex application environments, so as to meet the multiple requirements of modern electronic devices for high performance, miniaturization, and lightweight antennas.

[0114] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are protected by this utility model.

Claims

1. A lightweight, miniaturized GPS antenna, characterized in that, include: The antenna body has a clearance area, a circuit connection board and a matching network. The circuit connection board is disposed on both sides of the clearance area. A chip antenna is installed on the clearance area. The configuration of the clearance area is adapted to the chip antenna and the circuit connection board. The matching network is led out through the feed point of the chip antenna.

2. The lightweight miniaturized GPS antenna according to claim 1, characterized in that, The matching network includes a π-type matching network, which is used to adjust the impedance of the L1 band and is led out through the feed point of the chip antenna.

3. The lightweight miniaturized GPS antenna according to claim 2, characterized in that, include: The antenna body also has a feed point located near the π-type matching network. The feed point is connected to the feed line via a terminal.

4. The lightweight miniaturized GPS antenna according to claim 1, characterized in that, The circuit connection board is provided with a shaped wire assembly, which serves as part of the antenna grounding and extends around the circuit connection board.

5. The lightweight miniaturized GPS antenna according to claim 4, characterized in that, The irregularly shaped wire assembly includes multiple antenna frequency adjustment lines, wherein the lengths of the antenna frequency adjustment lines are not consistent. The antenna frequency can be adjusted by adjusting the length of at least one antenna frequency adjustment line in the irregularly shaped wire assembly.

6. The lightweight miniaturized GPS antenna according to claim 5, characterized in that, At least one antenna frequency adjustment line is connected to one end of the circuit board, and the remaining antenna frequency adjustment lines are connected to the other end of the circuit board.

7. The lightweight miniaturized GPS antenna according to claim 5, characterized in that, When the length of at least one antenna frequency adjustment line becomes shorter, the antenna frequency shifts to a higher frequency band; when the length of at least one antenna frequency adjustment line becomes longer, the antenna frequency shifts to a lower frequency band.

8. The lightweight miniaturized GPS antenna according to claim 4, characterized in that, The matching network includes a dual L-shaped matching network, which is led out through the feed point of the chip antenna.

9. The lightweight miniaturized GPS antenna according to claim 8, characterized in that, The dual L-shaped matching network is used to adjust the L5 band impedance at the series connection position near the chip antenna, and the remaining multiple matching positions are used to adjust the L1 band impedance or to tune both the L1 band impedance and the L5 band impedance.

10. The lightweight miniaturized GPS antenna according to claim 9, characterized in that, include: The antenna body also has a feed point located near the dual L-shaped matching network. The feed point is connected to the feed line via a terminal.

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