Lightweight and miniaturized GPS antenna

Abstract

The invention provides a lightweight and miniaturized GPS antenna, which comprises an antenna body, the antenna body is provided with a clearance zone, circuit connecting plates and a matching network, the circuit connecting plates 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 connecting plates, and the matching network is connected with the chip antenna and the circuit connecting plates. 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] The invention relates to the technical field of antenna manufacturing, and in particular to a lightweight and miniaturized GPS antenna. Background Art

[0002] With the rapid development of modern electronic technology, various electronic products such as smart phones, tablets, wearable devices, etc. have penetrated into people's daily lives. These electronic products not only require excellent functions and performance, but also pay more and more attention to appearance design, user experience and network performance. Among them, antennas are key components responsible for signal transmission and reception in electronic products. The performance of antennas directly affects the network performance, positioning accuracy and comprehensive user experience of products.

[0003] At present, people's demand for the network performance of electronic products is increasing day by day, and antenna technology has therefore become the focus of product promotion and market competition. Traditional antenna design often adopts standardized solutions, which is difficult to meet the personalized requirements of different products for antenna performance, size, weight, etc. Especially in terms of positioning functions, with the continuous advancement of GPS technology and the expansion of application scenarios, dual (multi) frequency GPS ceramic antennas have gradually become the mainstream trend. However, this type of antenna has disadvantages such as large size and heavy weight, which undoubtedly increases the difficulty of design and manufacturing for electronic products that pursue lightweight and miniaturization.

[0004] In addition, traditional antennas often rely on a single debugging method during the debugging process, and have high requirements for clearance area and height. Without sufficient clearance and a certain height, the bandwidth of the antenna is usually narrow and the efficiency is low, making it difficult to meet the requirements of broadband and high efficiency. This problem is particularly prominent in the current design of electronic products. As electronic products develop towards multi-function, large screen, all-metal, and narrow frame, the installation space of the antenna is greatly limited. How to design an antenna with excellent performance in a limited space has become a technical problem that the industry needs to solve urgently.

[0005] In response to the above problems, the industry has begun to explore new antenna design solutions. Among them, customized design of clearance areas, optimization of circuit connection board layout, and fine-tuning of matching networks have received extensive attention and research. The core of these methods is to enable the antenna to perform at its best in a limited installation space through precise design and debugging. However, the existing technical solutions still have many shortcomings, such as high design complexity, high manufacturing cost, and difficulty in debugging, which limit their widespread application in electronic products.

[0006] The disclosure of the above background technology content is only used to assist in understanding the inventive concept and technical solution of the present invention. It does not necessarily belong to the prior art of this patent application, nor does it necessarily provide technical guidance. In the absence of clear evidence that the above content has been disclosed before the filing date of this patent application, the above background technology should not be used to evaluate the novelty and creativity of the present application. Summary of the invention

[0007] In order to solve the above technical problems, the present invention proposes a lightweight and miniaturized GPS antenna, which customizes the size and shape of the clearance area to match the chip antenna and the circuit connection board, and undergoes fine tuning of the matching network, aiming to broaden the antenna bandwidth performance, improve the antenna's adaptability and stability in complex application environments, and meet the multiple requirements of modern electronic devices for high performance, miniaturization, and lightweight antennas.

[0008] In order to achieve the above object, the technical solution of the present invention is as follows:

[0009] The present invention provides a lightweight and miniaturized GPS antenna, comprising: an antenna body, wherein a clearance area, a circuit connection board and a matching network are provided on the antenna body, the circuit connection board is arranged 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, and the matching network is led out through a feeding point of the chip antenna.

[0010] The present invention proposes a lightweight and miniaturized GPS antenna, which is adapted to the chip antenna and the circuit connection board by customizing the size and shape of the clearance area, and undergoes fine tuning of the matching network, aiming to broaden the antenna bandwidth performance, improve the antenna's adaptability and stability in complex application environments, and meet the multiple demands 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, the π-type matching network is used to adjust the L1 frequency band impedance, and the π-type matching network is led out through the feeding point of the chip antenna.

[0012] As a preferred technical solution, it includes: a terminal, a feeding point is also provided on the antenna body, the feeding point is arranged near the π-type matching network, and the feeding point is connected to the feeder through the terminal.

[0013] As a preferred technical solution, a special-shaped wire component is provided on the circuit connection board. The special-shaped wire component serves as a part of the antenna grounding and is arranged to extend around the circuit connection board.

[0014] As a preferred technical solution, the special-shaped wire assembly includes: multiple antenna frequency adjustment wires, wherein the lengths of the antenna frequency adjustment wires are inconsistent, and the antenna frequency is adjusted by adjusting the length of at least one antenna frequency adjustment wire in the special-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 toward the high frequency band; when the length of at least one of the antenna frequency adjustment lines becomes longer, the antenna frequency shifts toward the low frequency band.

[0017] As a preferred technical solution, the matching network includes: a double L-type matching network, and the double L-type matching network is led out through the feeding point of the chip antenna.

[0018] As a preferred technical solution, the double L-type matching network is used to adjust the L5 frequency band impedance near the serial position of the chip antenna, and the remaining multiple matching positions are used to adjust the L1 frequency band impedance or to adjust the L1 frequency band impedance and the L5 frequency band impedance.

[0019] As a preferred technical solution, it includes: a terminal, a feeding point is also provided on the antenna body, the feeding point is arranged near the double L-type matching network, and the feeding point is connected to the feeder through the terminal.

[0020] The lightweight and miniaturized GPS antenna provided by the present invention has the following beneficial effects:

[0021] 1) The size and shape of the clearance area are customized to match the chip antenna and circuit connection board, and after fine tuning of the matching network, the purpose is to broaden the antenna bandwidth performance and improve the adaptability and stability of the antenna 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 the key indicators of the antenna, such as bandwidth performance, gain and radiation pattern; ensure that the chip antenna can work normally in the clearance area without being interfered by the surrounding structure. The design of the circuit connection 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 of the circuit connection board and the matching of the routing, and reduce signal loss and interference.

[0023] The matching network is used to adjust the impedance of the antenna to match it with the transmission line or receiver, thereby optimizing the signal transmission efficiency and enhancing the stability and reliability of the antenna to signal transmission;

[0024] Through customized design and fine tuning, the antenna has excellent performance in key indicators such as bandwidth performance, gain, and radiation pattern. While maintaining high performance, the antenna has been miniaturized by optimizing the antenna structure and layout, meeting the stringent requirements of modern electronic equipment for space utilization.

[0025] In summary, the antenna design provided by the present invention effectively broadens the bandwidth performance of the antenna and improves its adaptability and stability in complex application environments through customized design of clearance area, adaptation to chip antenna and circuit connection board, and fine adjustment of matching network. At the same time, the design also meets the multiple requirements of modern electronic devices for high performance, miniaturization and lightweight antennas.

[0026] 3) The purpose of the lightweight and miniaturized GPS antenna solution provided by the present invention is to provide an antenna solution that is both lightweight and compact and can be applied to complex antenna environments without reducing antenna efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0028] Figure 2 A rear view of the lightweight and miniaturized GPS antenna provided in Example 1;

[0029] Figure 3 A front view of a lightweight and miniaturized GPS antenna provided in Example 2;

[0030] Figure 4 A rear view of the lightweight and miniaturized GPS antenna provided in Example 2;

[0031] Figure 5 This is a test result diagram of the lightweight and miniaturized GPS antenna provided in Example 1;

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

[0033] Figure 7 This is a test result diagram of the lightweight and miniaturized GPS antenna provided in Example 2;

[0034] Figure 8 The antenna pattern pattern (vertical direction) of the lightweight and 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-double L-type matching network; 5-chip antenna; 6-terminal; 7-special-shaped wire component; 8-antenna frequency adjustment line; 9-feeding point. DETAILED DESCRIPTION

[0036] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0037] like Figure 1-4 As shown, the present invention provides a lightweight and miniaturized GPS antenna, comprising: 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 arranged 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, and the matching network 4 is led out through the feeding point of the chip antenna 5.

[0038] The present invention provides a lightweight and miniaturized GPS antenna, which is adapted to the chip antenna and the circuit connection board by customizing the size and shape of the clearance area, and undergoes fine tuning of the matching network, aiming to broaden the antenna bandwidth performance, improve the antenna's adaptability and stability in complex application environments, and meet the multiple requirements of modern electronic devices for high performance, miniaturization, and lightweight antennas.

[0039] Preferably, the circuit connection board 3 is arranged on both sides of the clearance area 2 in a corresponding manner; the circuit connection board 3 is arranged on both sides of the clearance area 2 in a corresponding manner, which plays a role in space optimization and layout flexibility in the 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 the antenna performance and bandwidth issues while taking into account the characteristics of adjusting the frequency deviation. This clearance area 2 is not limited to the illustrated design, and clearance areas of different shapes and sizes that can be designed and transformed according to the scheme are all within the protection scope of this application.

[0041] Preferably, the chip antenna 5 is centrally placed on the antenna body 1, and the circuit connection board 3 is arranged on both sides of the clearance area 2. The size of the grounding of the circuit connection board 3 will affect the efficiency, gain and other performances of the antenna; the larger the grounding size of the circuit connection board 3 on both sides, the higher the efficiency and gain of the antenna, further improving the antenna performance and bandwidth issues, while taking into account the characteristics of adjusting the frequency deviation;

[0042] The size and shape of the clearance area 2 are customized to optimize the bandwidth performance, gain and directional pattern of the antenna and other key indicators; the chip antenna 5 can work normally in the clearance area 2 without being interfered by the surrounding structure; the design of the circuit connection board 3 is convenient for electrical connection with the chip antenna 5 and ensures the stability of signal transmission; the size and shape of the clearance area 2 match the chip antenna, and the layout and routing of the circuit connection board 3 are optimized to reduce signal loss and interference;

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

[0044] Through customized design and fine tuning, the antenna has excellent performance in key indicators such as bandwidth performance, gain, and radiation pattern. While maintaining high performance, the antenna has been miniaturized by optimizing the antenna structure and layout, meeting the stringent requirements of modern electronic equipment for space utilization.

[0045] In summary, the antenna design provided by the present invention 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 the circuit connection board 3, and fine tuning 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, if Figure 1-2 As shown, the matching network 4 includes: a π-type matching network 41, the π-type matching network 41 is used to adjust the L1 frequency band impedance, and the π-type matching network is led out through the feeding point of the chip antenna 5;

[0047] The three matching positions of the π-type matching network 41 are for debugging the L1 frequency band impedance, which specifically includes the following steps: first, it is necessary to confirm the position quadrant of the L1 frequency point on the Smith original diagram in the series 0Ω state, follow the debugging principle of left parallel and right series, upper parallel and lower series, and make the L1 frequency point approach 50Ω impedance through the combination of capacitors and inductors with different values;

[0048] The π-type matching network 41 is designed to adjust the impedance of the L1 frequency 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 more efficiently transmitted to the antenna and radiated, thereby improving the radiation efficiency of the antenna. At the same time, reducing reflection and loss also helps to reduce the heating and noise interference of the antenna, and improve its stability in complex application environments.

[0049] Preferably, if Figure 1-2As shown, it includes: a terminal 6, a feeding point 9 is also provided on the antenna body 1, and the feeding point 9 is arranged near the π-type matching network 41, and the feeding point 9 is connected to the feeder through the terminal 6; the feeding point 9 is the connection point between the antenna and the feeder, and it is responsible for transmitting the radio frequency signal from the feeder to the antenna body 1, or transmitting the signal received by the antenna to the feedback line, and the radio frequency signal can be efficiently and stably transmitted between the antenna and the radio frequency circuit system through the feeding point;

[0050] The position and connection mode of the feeding point 9 have an important influence on the performance of the antenna. By setting the feeding point 9 near the π-type matching network 41, the impedance matching characteristics of the antenna can be further optimized, and the radiation efficiency and gain of the antenna can be improved. At the same time, by accurately controlling the connection mode and quality between the feeding point 9 and the antenna body 1, the loss and noise interference of the antenna can be reduced, and its adaptability and stability in complex application environments can be improved.

[0051] The feeding point 9 is connected to the feeder line via the terminal 6. This connection mode facilitates installation and maintenance, thereby improving the maintainability and service life of the antenna.

[0052] Preferably, if Figure 3-4 As shown, the circuit connection board 3 is provided with a special-shaped wire component 7, and the special-shaped wire component 7 is a part of the antenna grounding, and is arranged on the circuit connection board 3 in a winding and extending manner. The special-shaped wire component 7 is preferably a serpentine wire component, a wavy wire component or other special-shaped wire components; all special-shaped shapes of the special-shaped component 7 are within the protection scope of the present application, and the antenna frequency adjustment line 8 in this special-shaped wire component 7 is not limited to the illustrated design, and different forms can be designed and transformed according to the scheme, which are all within the protection scope of the present application.

[0053] Preferably, if Figure 3-4 As shown, the special-shaped wire assembly 7 includes: a plurality of antenna frequency adjustment wires 8, wherein the lengths of the antenna frequency adjustment wires 8 are inconsistent, and the antenna frequency is adjusted by adjusting the length of at least one antenna frequency adjustment wire 8 in the special-shaped wire assembly 7;

[0054] Preferably, if 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, if Figure 3-4 As shown, the design of some lines in the special-shaped line component 7 is designed according to the 1 / 4 wavelength length 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 high frequency band; when the length of at least one of the antenna frequency adjustment lines 8 becomes longer, the antenna frequency shifts to the low frequency band;

[0056] The special-shaped wire component 7 is a part of the antenna grounding, and is arranged on the surface of the circuit connection board 3 to ensure the stability and reliability of the antenna grounding. Grounding is a crucial link in antenna design, which affects the performance, stability and safety of the antenna.

[0057] By adjusting the length of at least one antenna frequency adjustment line 8 in the special-shaped line assembly 7, the antenna frequency can be accurately adjusted; this design enables the antenna to adapt to different operating frequency requirements, thereby improving the flexibility and applicability of the antenna.

[0058] By adjusting the length of the antenna frequency adjustment line 8, the frequency bandwidth of the antenna can be widened, so that it can maintain stable performance in a wider frequency range, which is particularly important for antenna applications that need to cover multiple frequency bands, and widen the frequency band;

[0059] Reasonable design of the special-shaped wire component 7 can improve the gain of the antenna, so that the antenna has stronger signal strength and longer transmission distance when receiving and transmitting signals, thereby improving the gain;

[0060] The detour and extension layout of the special-shaped wire assembly 7 can reduce the interference between the antenna and other electronic components and improve the anti-interference ability of the antenna, which is particularly important for antennas working in complex electromagnetic environments, and reduces interference;

[0061] When the length of at least one antenna frequency adjustment line 8 becomes shorter, the antenna frequency will shift to the high frequency band. This design enables the antenna to adapt to the application requirements of the high frequency band, such as radar, satellite communication, etc.;

[0062] When the length of at least one antenna frequency adjustment line 8 becomes longer, the antenna frequency will shift to the low frequency band. This design is suitable for low frequency band application requirements, such as mobile communications, the Internet of Things, etc.

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

[0064] The design of the special-shaped wire assembly 7 is convenient for manufacturing and maintenance. In actual production, the length and layout of the antenna frequency adjustment wire 8 can be adjusted as needed to adapt to different antenna design requirements. At the same time, this design is also convenient for maintenance or replacement when necessary, thereby improving the maintainability and service life of the antenna.

[0065] To sum up, the special-shaped wire assembly 7 on the circuit connection board 3 and the multiple antenna frequency adjustment wires 8 it contains play a key role in the antenna technical scheme in antenna grounding and frequency adjustment, optimizing antenna performance, achieving frequency adjustability, and facilitating manufacturing and maintenance. These functions jointly improve the overall performance and use effect of the antenna, enabling it to adapt to different application scenarios and performance requirements.

[0066] Preferably, if Figure 3-4 As shown, the matching network 4 includes: a double L-type matching network 42, and the double L-type matching network 42 is led out through the feeding point of the chip antenna 5;

[0067] Preferably, if Figure 3-4 As shown, the double L-type matching network 42 is connected in series near the chip antenna 5 to adjust the L5 frequency band impedance, and the remaining multiple matching positions are used to adjust the L1 frequency band impedance or the L1 frequency band impedance and the L5 frequency band impedance.

[0068] Preferably, if Figure 3-4 As shown, the serial position close to the chip antenna 5 is for adjusting the L5 frequency band impedance, and the remaining three matching positions are for adjusting the L1 frequency band impedance or the L1 frequency band impedance and the L5 frequency band impedance. The specific method for adjusting the frequency band impedance includes the following steps:

[0069] S1 is connected in series with the chip antenna 5 through a small capacitor, the capacitance is generally between 0.3 and 0.75 pf, to tune the L5 frequency band to the required Smith original chart position, generally adjusted to the third quadrant of the Smith chart;

[0070] S2 observes the quadrant position of the L1 frequency point in the Smith chart based on the step S1. Based on the debugging principle of the Smith chart, the remaining π-type matching position is used to tune the L1 frequency band through the capacitor and inductor combination, which will also affect the L5 frequency band. However, the change of the L5 frequency band is smaller than that of the L1 frequency band, thereby keeping the L1 and L5 frequency bands close to 50Ω impedance.

[0071] One of the L-type networks in the double L-type matching network 42 is close to the serial position of the chip antenna and is specifically used to adjust the impedance of the L5 frequency band. By adjusting the parameters of the inductor, capacitor and other components in the L-type network, the impedance matching characteristics of the antenna in the L5 frequency band can be optimized to ensure efficient transmission of signals in this frequency band.

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

[0073] By debugging the double L-type matching network 42, the frequency bandwidth of the antenna can be widened, so that it can maintain stable performance in a wider frequency range, which is particularly important for antenna applications that need to cover multiple frequency bands, and widen the frequency band;

[0074] The optimized impedance matching characteristics help to improve the gain and radiation efficiency of the antenna, so that the antenna has stronger signal strength and longer transmission distance when receiving and transmitting signals, improving gain and efficiency;

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

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

[0077] By adjusting the parameter combinations of different components in the double 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 double L-shaped matching network 42 is relatively simple and easy to manufacture. At the same time, this design also facilitates the repair or replacement of components in the matching network when necessary, thereby improving the maintainability and service life of the antenna.

[0079] Preferably, if Figure 3-4 As shown, it includes: a terminal 6, a feeding point is also provided on the antenna body 1, and the feeding point is arranged near the double L-type matching network 42, and the feeding point 9 is connected to the feeder through the terminal 6;

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

[0081] The position and connection mode of the feeding point 9 will affect the frequency response of the antenna. Setting the feeding point 9 near the double L-type matching network 42 is helpful to optimize the frequency response characteristics of the antenna in the target frequency band and improve the gain and radiation efficiency of the antenna.

[0082] Good impedance matching and signal transmission can improve the stability of the antenna, allowing it to maintain stable performance in a complex electromagnetic environment. This is especially important for antenna applications that require long-term stable operation, improving antenna performance;

[0083] The feeding point 9 is connected to the feeder line through the terminal 6. This connection method is easy to install and disassemble, which not only ensures that the connection between the feeding point and the feeder line is firm and reliable, but also improves the maintainability of the antenna and reduces the maintenance cost.

[0084] In summary, the feed point 9 is connected to the feeder through the terminal 6 and is arranged near the double L-type matching network 42, which plays a key role in signal transmission and impedance matching, improving antenna performance, and facilitating installation and maintenance in the antenna technical solution. These functions jointly improve the overall performance and use effect of the antenna, so that it can adapt to different application scenarios and performance requirements.

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

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

[0087] The lightweight and miniaturized GPS antenna provided by the present invention is applicable to various antenna application occasions such as laptop computers, tablets, mobile phones, 3C electronic products, automobiles, drones, etc. in various complex antenna environments.

[0088] Example 1

[0089] The present invention provides a lightweight and miniaturized GPS antenna, comprising: an antenna body 1 and a terminal 6, wherein a clearance area 2, a circuit connection board 3 and a π-type matching network 41 are provided on the antenna body 1, wherein the circuit connection board 3 is arranged 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, and the π-type matching network 41 is led out through a feeding point of the chip antenna 5; a feeding point 9 is also provided on the antenna body 1, wherein the feeding point 9 is arranged near the π-type matching network 41, and the feeding point 9 is connected to a feeder through the terminal 6;

[0090] The three matching positions of the π-type matching network 41 are for debugging the L1 frequency band impedance, which specifically includes the following steps: First, it is necessary to confirm the position quadrant of the L1 frequency point on the Smith original diagram in the series 0Ω state, follow the debugging principle of left parallel and right series, upper parallel and lower series, and make the L1 frequency point approach 50Ω impedance through the combination of capacitors and inductors of different values. The parameters of the lightweight and miniaturized GPS antenna provided in Example 1 are shown in Tables 1-3 below:

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

[0092]

[0093]

[0094] Table 2 Parameters of the lightweight miniaturized GPS antenna provided in Example 1

[0095]

[0096] Table 3 Parameters of lightweight miniaturized GPS antenna provided in Example 1

[0097]

[0098] From Table 1-3, Figure 5 The test data shows that the antenna has good efficiency and bandwidth, which can meet the positioning requirements. Figure 6 It can be seen from the antenna field pattern that the antenna radiation is basically in the upper hemisphere, and the suppression effect in the lower hemisphere is obvious, which meets the usage scenario requirements of the GPS antenna; through customized design of the size and shape of the clearance area, it is adapted to the chip antenna 5 and the circuit connection board 3, and after fine-tuning of the matching network, it aims to broaden the antenna bandwidth performance, improve the adaptability and stability of the antenna in complex application environments, and meet the multiple requirements of modern electronic equipment for high performance, miniaturization and lightweight antennas.

[0099] Example 2

[0100] The present invention provides a lightweight and miniaturized GPS antenna, comprising: an antenna body 1 and a terminal 6, wherein the antenna body 1 is provided with a clearance area 2, a circuit connection board 3 and a double L-shaped matching network 42, wherein the circuit connection board 3 is arranged 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 double L-shaped matching network 42 is led out through the feeding point of the chip antenna 5, the double L-shaped matching network 42 is connected in series with the chip antenna 5 to adjust the L5 frequency band impedance, and the remaining multiple matching positions are used to adjust the L1 frequency band impedance or the L1 frequency band impedance and the L5 frequency band impedance. The circuit connection board 3 is provided with a special-shaped wire component 7, and the special-shaped wire component 7 is used as a part of the antenna grounding, and is connected to the circuit connection board 3. The special-shaped wire assembly 7 includes: a plurality of antenna frequency adjustment wires 8, wherein the lengths of the antenna frequency adjustment wires 8 are inconsistent, and the antenna frequency is adjusted by adjusting the length of at least one antenna frequency adjustment wire 8 in the special-shaped wire assembly 7; at least one antenna frequency adjustment wire 8 is connected to one end of the circuit connection board 3, and the remaining antenna frequency adjustment wires 8 are connected to the other end of the circuit connection board 3; when the length of at least one antenna frequency adjustment wire 8 becomes shorter, the antenna frequency shifts to the high frequency band; when the length of at least one antenna frequency adjustment wire 8 becomes longer, the antenna frequency shifts to the low frequency band; a feeding point 9 is also provided on the antenna body 1, and the feeding point 9 is arranged near the double L-type matching network 42, and the feeding point 9 is connected to the feeder through the terminal 6;

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

[0102] S1 is connected in series with the chip antenna 5 through a small capacitor with a capacitance of 0.55pf to tune the L5 frequency band to the required Smith original image position, generally adjusted to the third quadrant of the Smith circle;

[0103] S2 observes the quadrant position of the L1 frequency point in the Smith chart based on the first step, and uses the debugging principle of the Smith chart to tune the L1 frequency band through the combination of capacitors and inductors using the remaining π-type matching positions, which will also affect the L5 frequency band, but the change of the L5 frequency band is smaller than that of the L1 frequency band, thereby keeping the L1 and L5 frequency bands close to the 50Ω impedance; the parameters of the lightweight and miniaturized GPS antenna provided in Example 2 are shown in Table 4-7 below:

[0104] Table 4 Parameters of 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] Table 6 Parameters of the lightweight miniaturized GPS antenna provided in Example 2

[0109]

[0110] Table 7 Parameters of lightweight miniaturized GPS antenna provided by Example 2

[0111]

[0112] From Table 4-7, Figure 7 From the test data, we can see that the antenna has good efficiency and bandwidth, which can meet the positioning requirements. Figure 8 From the antenna field pattern, it can be seen that the antenna radiation is basically in the upper hemisphere, and the suppression effect in the lower hemisphere is obvious, which meets the usage scenario requirements of the GPS antenna; through customized design of the size and shape of the clearance area, it is adapted to the chip antenna and the circuit connection board, and after fine-tuning of the matching network, it aims to broaden the antenna bandwidth performance, improve the antenna's adaptability and stability in complex application environments, and meet the multiple requirements of modern electronic equipment for high performance, miniaturization and lightweight antennas.

[0113] It is to be understood that the present invention is described by some embodiments, and it is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all various changes or equivalent substitutions falling within the scope of the claims of the present application are included. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application are within the scope protected by the present invention.

Claims

1. Lightweight and miniaturized GPS antenna, characterized by: include: The antenna body is provided with a clearance area, a circuit connection board and a matching network, the circuit connection board is arranged 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, and the matching network is led out through the feeding point of the chip antenna.

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

3. The lightweight and miniaturized GPS antenna according to claim 2, characterized in that: include: Terminal, a feeding point is also provided on the antenna body, the feeding point is arranged near the π-type matching network, and the feeding point is connected to the feeder through the terminal.

4. The lightweight and miniaturized GPS antenna according to claim 1, characterized in that: The circuit connection board is provided with a special-shaped wire component, which serves as a part of the antenna grounding and is arranged around and extended on the circuit connection board.

5. The lightweight and miniaturized GPS antenna according to claim 4, characterized in that: The special-shaped wire assembly includes: a plurality of antenna frequency adjustment wires, wherein the lengths of the antenna frequency adjustment wires are inconsistent, and the antenna frequency is adjusted by adjusting the length of at least one antenna frequency adjustment wire in the special-shaped wire assembly.

6. The lightweight and 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 connection board, and the remaining antenna frequency adjustment lines are connected to the other end of the circuit connection board.

7. The lightweight and 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 toward the high frequency band; when the length of at least one antenna frequency adjustment line becomes longer, the antenna frequency shifts toward the low frequency band.

8. The lightweight and miniaturized GPS antenna according to claim 4, characterized in that: The matching network includes: a double L-type matching network, and the double L-type matching network is led out through the feeding point of the chip antenna.

9. The lightweight and miniaturized GPS antenna according to claim 8, characterized in that: The double L-type matching network is connected in series near the chip antenna to adjust the L5 frequency band impedance, and the remaining multiple matching positions are used to adjust the L1 frequency band impedance or to adjust the L1 frequency band impedance and the L5 frequency band impedance.

10. The lightweight and miniaturized GPS antenna according to claim 9, characterized in that: include: Terminal, a feeding point is also provided on the antenna body, the feeding point is arranged near the double L-type matching network, and the feeding point is connected to the feeder through the terminal.

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