Dual-frequency Wi-Fi antenna

Abstract

The utility model discloses a dual-frequency Wi-Fi antenna, comprising a feed radiation oscillator and a ground feed radiation oscillator which are arranged on an FPC substrate, the feed radiation oscillator is used for receiving a feed signal and generating radiation of a first frequency band and a second frequency band; and the ground feed radiation oscillator is used for grounding and is matched with the feed radiation oscillator to realize double-frequency operation. According to the double-frequency Wi-Fi antenna provided by the utility model, various radiation units are designed on the feed radiation array and the ground feed radiation array, so that broadband coverage, high gain efficiency and good directivity are realized. According to the antenna, feed and ground feed radiation oscillators are formed in a wiring mode, and through reasonable impedance matching and wiring layout, the antenna has excellent transmission performance under the frequency bands of 2.4 GHz and 5 GHz. The connection requirements of common Wi-Fi equipment such as tablet personal computers and sound boxes can be met, and the compatibility of products and the user experience can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the field of antennas, and in particular to a dual-band Wi-Fi antenna. Background Art

[0002] With the rapid development of wireless communication technology, Wi-Fi networks have become widely used in a variety of electronic products in daily life, such as tablets, network players, speakers, and projectors. One of the main functions of these devices is wireless connectivity, which uses Wi-Fi antennas to achieve fast and stable data transmission. However, existing Wi-Fi antennas still have many performance shortcomings, especially their narrow frequency coverage and lack of compatibility with different Wi-Fi standards, which limits the use cases of wireless devices.

[0003] Traditional single-band Wi-Fi antennas primarily focus on a single frequency band, making them difficult to support simultaneously the two mainstream Wi-Fi bands, 2.4GHz and 5GHz. The 2.4GHz band offers excellent penetration and wide coverage, making it suitable for longer-distance signal transmission. The 5GHz band, on the other hand, boasts faster transmission speeds and improved interference resistance, making it an ideal choice for bandwidth-intensive applications like high-definition video and audio. Therefore, to meet the demands of modern multi-functional devices, developing a dual-band Wi-Fi antenna capable of supporting both the 2.4GHz and 5GHz bands is crucial. Summary of the Invention

[0004] In order to solve the above problems, the present invention provides a dual-band Wi-Fi antenna, which achieves broadband coverage, high gain efficiency and good directivity by designing multiple radiating units on the feed radiating array and the ground feed radiating array.

[0005] The utility model is realized by the following technical solutions: a dual-band Wi-Fi antenna, comprising:

[0006] The power feeding radiation array and the ground feeding radiation array are arranged on the FPC substrate;

[0007] The feeding radiation array is used to receive a feeding signal and generate radiation in a first frequency band and a second frequency band;

[0008] The ground-fed radiating array is used for grounding and cooperates with the power-fed radiating array to achieve dual-frequency operation.

[0009] As a preferred technical solution, the feed radiation array includes a plurality of radiation units, each of which is configured in a wiring form to generate or assist in generating radiation in a specific frequency band.

[0010] As a preferred technical solution, the ground-fed radiating array includes multiple radiating units, which are configured in a wiring form and achieve dual-frequency operation through impedance transformation in cooperation with the feeding radiating array.

[0011] As a preferred technical solution, the feed radiation array includes:

[0012] The first radiation unit has a curved and extended routing structure and is used to generate radiation in the 2400MHz-2500MHz frequency band;

[0013] The second radiating unit and the third radiating unit have a horizontal and straight line structure, and are used to generate or assist in generating radiation in the 5100MHz-5850MHz frequency band.

[0014] Feed pad, serving as the feed connection point.

[0015] As a preferred technical solution, the ground-fed radiation array includes:

[0016] The fourth radiation unit has a horizontal and straight line structure and is used to generate or assist in generating radiation in the 5100MHz-5850MHz frequency band.

[0017] The fifth radiating unit has a curved and extended routing structure and is used to generate radiation in the 2400MHz-2500MHz frequency band;

[0018] Feed pad, serves as the ground connection point.

[0019] As a preferred technical solution, the first radiation unit is bent and extends upward, and the line is the longest.

[0020] As a preferred technical solution, the fifth radiation unit is bent and extends upward, and the line is the longest.

[0021] As a preferred technical solution, the FPC substrate and the traces are in the shape of a bull horn, with an overall length and width of 40.4mm*17.6mm. The antenna is divided in the form of traces and is a monopole antenna.

[0022] The beneficial effects of the present invention are as follows: the present invention provides a dual-band Wi-Fi antenna, which realizes broadband coverage, high gain efficiency and good directivity by designing a variety of radiating units on the feed radiating array and the ground-fed radiating array. The antenna is composed of feed and ground-fed radiating arrays in the form of traces, and has excellent transmission performance in both the 2.4GHz and 5GHz frequency bands through reasonable impedance matching and trace layout. This dual-band antenna can not only meet the connection requirements of common Wi-Fi devices such as tablets and speakers, but also effectively improve the compatibility and user experience of the product. At present, the antenna has been mass-produced by our company and applied to a variety of Bluetooth Wi-Fi electronic products, especially in speaker-type devices, showing a significant performance improvement effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 This is a structural diagram of the antenna of the present utility model;

[0025] Figure 2 This is the RL free space test diagram of the utility model antenna;

[0026] Figure 3 This is the VSWR free space test diagram of the antenna of the utility model;

[0027] Figure 4 This is the Smith free space test diagram of the antenna of the utility model;

[0028] Figure 5 This is a screenshot of the efficiency and gain of the antenna of the utility model;

[0029] Figure 6 This is the 3D directional pattern of the utility model antenna in the 2400-2500MHz frequency band

[0030] Figure 7 This is the XY plane 2D radiation pattern of the utility model antenna in the 2400-2500MHz frequency band;

[0031] Figure 8 The YZ plane 2D radiation pattern of the utility model antenna in the 2400-2500MHz frequency band;

[0032] Figure 9 This is the ZX plane 2D radiation pattern of the utility model antenna in the 2400-2500MHz frequency band;

[0033] Figure 10 This is the 3D radiation pattern of the utility model antenna in the 5100-5800MHz frequency band;

[0034] Figure 11 This is the XY plane 2D radiation pattern of the utility model antenna in the 5100-5800MHz frequency band;

[0035] Figure 12 The YZ plane 2D radiation pattern of the utility model antenna in the 5100-5800MHz frequency band;

[0036] Figure 13 This is the ZX plane 2D radiation pattern of the antenna of the utility model in the 5100-5800MHz frequency band. DETAILED DESCRIPTION

[0037] All features disclosed in this specification, or all steps in the disclosed methods or processes, except mutually exclusive features and / or steps, can be combined in any manner.

[0038] Any feature disclosed in this specification (including any appended claims, abstract and drawings), unless otherwise stated, may be replaced by other equivalent or similar features. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0039] like Figures 1-13 As shown, the present invention provides a dual-band Wi-Fi antenna comprising a feed radiator 1 and a ground-fed radiator 2 mounted on a flexible printed circuit (FPC) substrate. The antenna is designed as a monopole structure, with the entire FPC substrate shaped like a bull's horn, measuring 40.4 mm x 17.6 mm. The substrate and wiring are integrally formed. This bull's horn-shaped design optimizes the antenna's directivity and gain efficiency, resulting in excellent radiation performance in both the 2.4 GHz and 5 GHz frequency bands, making it suitable for a variety of electronic devices requiring Wi-Fi functionality.

[0040] The feed radiating array 1 is used to receive the feed signal and can generate radiation signals in the first frequency band (2400MHz-2500MHz) and the second frequency band (5100MHz-5850MHz) to achieve dual-frequency radiation. The feed radiating array 1 includes a plurality of radiating units, each of which is configured in a specific routing form to generate or assist in generating radiation signals in the target frequency band. In the feed radiating array 1, a first radiating unit 11 is designed, and its routing is a curved and extended structure, extending upward, and the routing is the longest part of the feed radiating array 1. This design enables the first radiating unit 11 to generate main radiation in the 2400MHz-2500MHz frequency band, providing stronger signal coverage. In addition, a second radiating unit 12 and a third radiating unit 13 are also provided in the feed radiating array 1. The routing of these two radiating units are both horizontal and straight line structures, which are used to generate or assist in generating radiation signals in the 5100MHz-5850MHz frequency band. Through the combination of these radiating units, the feed radiator array 1 can effectively cover the two mainstream frequency bands required by Wi-Fi. In addition, a feed pad 14 is also provided on the feed radiator array 1 as a connection point for the feed signal, facilitating connection with external circuits and signal transmission.

[0041] The ground-fed radiating array 2 is used for grounding, and cooperates with the feed radiating array 1 through impedance transformation to achieve dual-band operation, so that the matching effect of the antenna in the high and low frequency bands is improved. The ground-fed radiating array 2 also includes multiple radiating units, among which the fourth radiating unit 15 has a horizontal and straight line structure, which is used to generate or assist in generating a radiation signal in the 5100MHz-5850MHz frequency band. At the same time, the ground-fed radiating array 2 also includes a fifth radiating unit 16, the routing of which is a curved extension structure and extends upward, with the longest line, so as to generate a stronger radiation signal in the 2400MHz-2500MHz frequency band. Through this design, the ground-fed radiating array 2 not only plays the role of grounding, but also can effectively enhance the radiation effect of the signal in a specific frequency band. In addition, a ground-fed solder pad 17 is provided on the ground-fed radiating array 2 as a ground connection point, which is grounded to the external circuit to ensure the stability and anti-interference performance of the antenna.

[0042] Through the collaboration of the feed radiator 1 and the ground-fed radiator 2, this dual-band Wi-Fi antenna achieves wideband coverage, high gain, and good directivity in both the 2.4GHz and 5GHz frequency bands. The design and routing structure of the radiating elements in the feed radiator 1, combined with the impedance matching and routing optimization of the ground-fed radiator 2, effectively enhance the antenna's radiation performance across different frequency bands. This dual-band antenna is not only suitable for Wi-Fi devices, but can also be used in Bluetooth and Wi-Fi hybrid devices. It exhibits significant signal enhancement in speaker-type devices, effectively improving the quality and stability of wireless connections.

[0043] This utility model integrates and debugs a feed radiator and a ground-fed radiator, creating a dual-band Wi-Fi antenna through impedance transformation. It features a wide frequency bandwidth, high efficiency gain, excellent directivity, and high versatility. It is currently in mass production and is being used in various Bluetooth and Wi-Fi electronic products. In particular, speakers have shown significant performance improvements when using this utility model.

[0044] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that do not require creative effort should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection defined in the claims.

Claims

1. A dual-band Wi-Fi antenna, characterized in that: include: The power feeding radiation array (1) and the ground feeding radiation array (2) are arranged on the FPC substrate. The feeding radiation array (1) is used to receive a feeding signal and generate radiation in a first frequency band and a second frequency band; The ground-fed radiating array (2) is used for grounding and cooperates with the power-fed radiating array (1) to achieve dual-frequency operation.

2. The dual-band Wi-Fi antenna according to claim 1, wherein: The feed radiation array (1) comprises a plurality of radiation units, each of which is arranged in a wiring form to generate or assist in generating radiation in a specific frequency band.

3. The dual-band Wi-Fi antenna according to claim 1, wherein: The ground-fed radiating array (2) comprises a plurality of radiating units, which are arranged in a wiring form and cooperate with the power-fed radiating array (1) to achieve dual-frequency operation through impedance transformation.

4. The dual-band Wi-Fi antenna according to claim 1, wherein: The feed radiation array (1) comprises: A first radiation unit (11) has a curved and extended wiring structure and is used to generate radiation in the 2400MHz-2500MHz frequency band; The second radiation unit (12) and the third radiation unit (13) have a horizontal and straight line structure and are used to generate or assist in generating radiation in the 5100MHz-5850MHz frequency band. The feeding pad (14) serves as a feeding connection point.

5. The dual-band Wi-Fi antenna according to claim 1, wherein: The ground-fed radiation array (2) comprises: The fourth radiation unit (15) has a horizontal and straight line structure and is used to generate or assist in generating radiation in the 5100MHz-5850MHz frequency band. A fifth radiation unit (16) has a curved and extended routing structure and is used to generate radiation in the 2400MHz-2500MHz frequency band; The ground feed pad (17) serves as a ground connection point.

6. The dual-band Wi-Fi antenna according to claim 4, wherein: The first radiation unit (11) is arranged in a curved line and extends upward, and the line is the longest.

7. The dual-band Wi-Fi antenna according to claim 5, wherein: The fifth radiation unit (16) has a line that bends and extends upward, and has the longest line.

8. The dual-band Wi-Fi antenna according to claim 1, wherein: The FPC substrate and the traces are in the shape of a bull horn, with an overall length and width of 40.4mm*17.6mm. The antenna is divided in the form of traces and is a monopole antenna.

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