WIFI three-frequency combination directional antenna unit

Abstract

The utility model discloses a WIFI three-frequency combining directional antenna unit, which comprises a dielectric substrate, a microstrip antenna metal patch, a metal radiation sheet, a radiation sheet supporting piece, a combining device and a microstrip line, the microstrip antenna metal patch covers the dielectric substrate, the other surface of the dielectric substrate is the metal grounding plate, the metal radiation sheet is fixed above the microstrip antenna metal patch antenna through the radiation sheet supporting piece, and the microstrip antenna metal patches with different frequencies are connected with the combiner through microstrip lines. And the combiner combines the antennas with different frequencies and outputs the combined antennas through the microstrip line. The number of antenna channels is reduced in a combining mode, connection with WIFI equipment is facilitated, and the antenna gain can be improved after array combination.

Description

Technical Field

[0001] The present invention relates to the technical field of combined antennas, and in particular to a WIFI triple-band combined directional antenna unit. Background Art

[0002] With the rapid development of Wi-Fi technology, Wi-Fi applications are becoming increasingly widespread. Most Wi-Fi communications use omnidirectional antenna units. Omnidirectional antennas not only transmit and receive signals in all directions, but also, because most Wi-Fi modules or device RF channels support the full Wi-Fi frequency range, omnidirectional antennas can cover a wide frequency range. Therefore, a single omnidirectional antenna can meet Wi-Fi frequency band requirements. However, Wi-Fi communications also require directional antennas, which can transmit signals in a specific direction, increasing signal coverage, connection stability, and transmission speed. However, due to the limited operating frequency range of directional antennas, a single directional antenna can only cover a small frequency range. To meet Wi-Fi communication frequency band requirements, two or more directional antenna units are typically required, which cannot meet the frequency bands supported by most existing Wi-Fi modules or device RF channels. Summary of the Invention

[0003] Purpose of the invention: The present invention provides a WIFI three-band combined directional antenna unit, which reduces the number of antenna channels by combining, facilitates connection with WIFI devices, and can improve antenna gain after array combining.

[0004] Technical solution: The WIFI triple-band combining directional antenna unit described in the present invention includes: a dielectric substrate, a microstrip antenna metal patch, a metal radiator, a radiator support, a combiner and a microstrip line; the microstrip antenna metal patch is covered on the dielectric substrate, the other side of the dielectric substrate is a metal ground plate, the metal radiator is fixed above the microstrip antenna metal patch antenna through the radiator support, the microstrip antenna metal patches of different frequencies are connected to the combiner through the microstrip line, and the combiner combines the antennas of different frequencies and outputs them through the microstrip line.

[0005] Furthermore, the metal patch of the microstrip antenna is circular or elliptical. By changing the shape and size of the metal patch of the microstrip antenna, the optimized frequency bandwidth can be changed and the performance of the antenna unit can be adjusted.

[0006] Furthermore, the metal radiating plate is circular or elliptical. By changing the shape and size of the metal radiating plate, the optimized frequency bandwidth can be changed and the performance of the antenna unit can be adjusted.

[0007] Furthermore, the radiation piece support fixes the metal radiation piece, and the performance of the antenna unit is adjusted by adjusting the height of the support, that is, changing the distance between the metal radiation piece and the metal patch of the microstrip antenna.

[0008] Furthermore, a radio frequency cable is provided, and the radio frequency cable is connected to the combined microstrip lines.

[0009] Furthermore, the three frequencies are combined into WIFI 2.4G, 5.2G and 5.8G.

[0010] Furthermore, the length and width of the microstrip line can be adjusted to change the performance of the antenna.

[0011] Beneficial effects: Compared with the existing technology, the present invention has the following significant advantages: (1) It can simultaneously meet the frequency band range requirements of current WIFI, reduce the number of antenna channels by combining, and facilitate connection with WIFI devices. This type of antenna can combine single antennas of different frequencies, or combine antenna units of different frequencies into an array and then combine. After the array is combined, the antenna gain can be improved; (2) The number of antenna channels is reduced by combining, saving costs. The antenna array has the advantages of low height, high integration, small size, light weight, and good radiation characteristics. At the same time, the antenna has broadband characteristics, which meets the WIFI2.4G, 5.2G and 5.8G frequency band requirements; (3) It is applicable to PCB processing technology, easy to process and has good batch consistency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a structural diagram of the WIFI triple-band directional antenna unit of the present invention.

[0013] Figure 2 It is a side view of the WIFI three-band combining directional antenna unit of the present invention.

[0014] Figure 3 This is a front plan view of the WIFI triple-band directional antenna unit of the present invention.

[0015] Figure 4 This is a graph showing how the performance of the Wi-Fi triple-band directional antenna of the present invention changes when the size of the metal radiating plate is changed.

[0016] Figure 5 This is a standing wave test result diagram of the WIFI three-band combined directional antenna unit of the present invention. DETAILED DESCRIPTION

[0017] like Figure 1-Figure 3 As shown, a WiFi triple-band combining directional antenna unit includes: a dielectric substrate 1, a microstrip antenna metal patch 2, a metal radiating plate 3, a radiating plate support 4, a combining device 5 and a microstrip line 6; the microstrip antenna metal patch 2 is covered on the dielectric substrate 1, and the other side of the dielectric substrate 1 is a metal ground plane. The metal radiating plate 3 is fixed above the microstrip antenna metal patch 2 through the radiating plate support 4. The microstrip antenna metal patches 2 of different frequencies are connected to the combiner 5 through the microstrip line 6. The combiner 5 combines the antennas of different frequencies and outputs them through the microstrip line 6.

[0018] The shape of the metal patch 2 of the microstrip antenna can be varied, and the optimized frequency bandwidth can be changed and the performance of the antenna unit can be adjusted by changing the shape and size of the metal patch 2 of the microstrip antenna. The shape of the metal radiating plate 3 can also be varied, and the optimized frequency bandwidth can be changed and the performance of the antenna unit can be adjusted by changing the shape and size of the metal radiating plate 3. The support 4 fixes the metal radiating plate 3, and the length of the support 4 can be adjusted to change the performance of the antenna. The combiner 5 can be matched and selected according to the operating frequency band of the antenna. The microstrip metal patch 2 and the combiner 5 are connected by a microstrip line 6, and the length and width of the microstrip line 6 can adjust the overall performance of the antenna. The RF cable 7 is connected to the combined microstrip line 6, and the output mode of the RF cable 7 can be selected according to actual needs.

[0019] like Figure 4 The figure shows the simulation results of the antenna's standing wave when the fixed metal radiator 3 has different sizes. The figure shows that the antenna's standing wave varies in the high-frequency bands of 5.2 GHz and 5.8 GHz depending on the size of the fixed metal radiator 3. The antenna's performance can be optimized by adjusting the size of the fixed radiator 3.

[0020] like Figure 5 The following figure shows the standing wave test results of the Wi-Fi triple-band directional antenna unit. As can be seen from the figure, the Wi-Fi 2.4GHz, 5.2GHz, and 5.8GHz triple-band directional antenna unit's standing wave response meets operational requirements in the 2.4GHz-2.5GHz, 5.15GHz-5.25GHz, and 5.7GHz-5.85GHz bands. This Wi-Fi 2.4GHz, 5.2GHz, and 5.8GHz triple-band directional antenna unit achieves excellent broadband performance.

[0021] The Wi-Fi 2.4G, 5.2G, and 5.8G triple-band directional antenna unit provided by this invention reduces the number of antenna channels by combining them, facilitating connection to Wi-Fi devices. This reduces costs and features a low profile, high integration, compact size, light weight, and excellent radiation characteristics. Furthermore, the antenna offers broadband performance, meeting Wi-Fi 2.4G, 5.2G, and 5.8G frequency band requirements.

Claims

1. A WIFI triple-band directional antenna unit, characterized in that: include: A dielectric substrate (1), a microstrip antenna metal patch (2), a metal radiating plate (3), a radiating plate support (4), a combiner (5) and a microstrip line (6); the microstrip antenna metal patch (2) is covered on the dielectric substrate (1), the other side of the dielectric substrate (1) is a metal ground plate, the metal radiating plate (3) is fixed above the microstrip antenna metal patch (2) through the radiating plate support (4), the microstrip antenna metal patches (2) of different frequencies are connected to the combiner (5) through the microstrip line (6), and the combiner (5) combines the antennas of different frequencies and outputs them through the microstrip line (6).

2. The WIFI triple-band directional antenna unit according to claim 1, characterized in that: The microstrip antenna metal patch (2) is circular or elliptical.

3. The WIFI triple-band directional antenna unit according to claim 1, characterized in that: The metal radiation piece (3) is circular or elliptical.

4. The WIFI triple-band directional antenna unit according to claim 1, characterized in that: The radiation piece support member (4) fixes the metal radiation piece (3), and the performance of the antenna unit is adjusted by adjusting the height of the radiation piece support member (4), that is, changing the distance between the metal radiation piece (3) and the microstrip antenna metal patch (2).

5. The WIFI triple-band directional antenna unit according to claim 1, characterized in that: A radio frequency cable (7) is also provided, and the radio frequency cable (7) is connected to the combined microstrip line (6).

6. The WIFI triple-band directional antenna unit according to claim 1, characterized in that: The three-band combined channel is WIFI2.4G, 5.2G and 5.8G.

7. The WIFI triple-band directional antenna unit according to claim 1, characterized in that: Changing the length and width of the microstrip line (6) adjusts the performance of the antenna.

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