A compact WLAN antenna

Abstract

The utility model discloses a compact WLAN antenna, including the carrier plate and setting first antenna, second antenna, first step isolation unit, second step isolation unit and U shape isolation unit on the carrier plate, first antenna and second antenna are arranged in the both sides of carrier plate and interval one isolation position, first step isolation unit sets up in the isolation position and is close to first antenna, second step isolation unit sets up in the isolation position and is close to second antenna, U shape isolation unit sets up in the isolation position and is located between first step isolation unit and second step isolation unit, through above -mentioned structure not only can make WLAN antenna work in 2.4GHz, 5GHz and 6GHz frequency band, and the mutual isolation degree between frequency band is greater than 30dB, and can complete 2T2R's MIMO application in combination radio frequency circuit, satisfies the use demand.

Description

Technical Field

[0001] This utility model relates to the field of antennas, and in particular to a compact WLAN antenna. Background Technology

[0002] In local area network wireless coverage, antennas play a crucial role, and their performance greatly affects network coverage. However, existing WLAN antennas generally suffer from poor isolation, limited frequency bands, and large size, which greatly restricts the application of MIMO technology in the field of wireless communication. How to achieve WLAN antennas with good radiation performance, high isolation, miniaturization, and broadband is an urgent problem to be solved. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a compact WLAN antenna.

[0004] The technical solution adopted by one embodiment of this utility model to solve its technical problem is: a compact WLAN antenna, including a carrier board and a first antenna, a second antenna, a first step isolation unit, a second step isolation unit and a U-shaped isolation unit disposed on the carrier board; The first and second antennas are positioned on opposite sides of the carrier plate and separated by an isolation position; The first-stage isolation unit is located within the isolation position and close to the first antenna; The second-stage isolation unit is located within the isolation position and close to the second antenna; The U-shaped isolation unit is installed within the isolation position and is located between the first-step isolation unit and the second-step isolation unit.

[0005] As one of the preferred embodiments of this utility model, the first step isolation unit and the second step isolation unit are symmetrically arranged with the center line of the U-shaped isolation unit as the axis, and both include a first isolation step and a second isolation step arranged in a stepped manner.

[0006] In one of the preferred embodiments of this utility model, the width W1 of the first isolation step is set to 2.5mm and the height H1 is set to 3.3mm.

[0007] As one of the preferred embodiments of this utility model, the width W2 of the second isolation step is set to 2.5mm and the height H2 is set to 7.7mm.

[0008] As one of the preferred embodiments of this utility model, the isolation position has a side opening, and the opening end of the U-shaped isolation unit faces the side opening.

[0009] As one of the preferred embodiments of this utility model, the U-shaped isolation unit includes a first isolation long side, a second isolation long side, and an isolation short side. The first isolation long side is connected to one end of the isolation short side, and the second isolation long side is connected to the other end of the isolation short side.

[0010] In one of the preferred embodiments of this utility model, the distance L between the first antenna and the second antenna is set to 30mm.

[0011] In one of the preferred embodiments of this utility model, the width W3 of the first isolation long side is set to 1.25mm and the height H3 is set to 19mm, the width W4 of the second isolation long side is set to 1.25mm and the height H4 is set to 19mm, and the width W5 of the isolation short side is set to 1.5mm and the height H5 is set to 2mm.

[0012] The beneficial effects of this utility model are as follows: A compact WLAN antenna includes a carrier board and a first antenna, a second antenna, a first step isolation unit, a second step isolation unit, and a U-shaped isolation unit disposed on the carrier board; the first antenna and the second antenna are arranged on opposite sides of the carrier board and separated by an isolation position; the first step isolation unit is disposed within the isolation position and close to the first antenna; the second step isolation unit is disposed within the isolation position and close to the second antenna; the U-shaped isolation unit is disposed within the isolation position and located between the first step isolation unit and the second step isolation unit; the above structure not only enables the WLAN antenna to operate in the 2.4GHz, 5GHz, and 6GHz frequency bands, but also achieves a mutual isolation degree between frequency bands greater than 30dB. Combined with radio frequency circuitry, it can complete 2T2R MIMO applications, meeting usage requirements. Attached Figure Description

[0013] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of a compact WLAN antenna. Figure 2 This is an S-parameter diagram of a compact WLAN antenna. Detailed Implementation

[0014] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0015] In the description of this utility model, "multiple" means two or more; "greater than," "less than," and "exceeding" are understood to exclude the stated number; "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features or their sequential relationship.

[0016] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0017] In this utility model, unless otherwise explicitly defined, the terms "setting," "installing," and "connecting" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to a fixed connection, a detachable connection, or an integral molding; they can refer to a mechanical connection; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0018] Reference Figures 1-2 A compact WLAN antenna includes a carrier board 10 and a first antenna 20, a second antenna 30, a first step isolation unit 40a, a second step isolation unit 40b and a U-shaped isolation unit 50 disposed on the carrier board 10. The first antenna 20 and the second antenna 30 are arranged on both sides of the carrier plate 10 and separated by an isolation position 60. The first step isolation unit 40a is located within the isolation position 60 and close to the first antenna 20; The second-stage isolation unit 40b is located within the isolation position 60 and close to the second antenna 30; The U-shaped isolation unit 50 is disposed within the isolation position 60 and is located between the first step isolation unit 40a and the second step isolation unit 40b.

[0019] In this invention, the first antenna 20 and the second antenna 30 are distributed on both sides of the carrier board 10. The carrier board 10 is preferably a PCB board. The isolation between the two antennas is improved by setting a first step isolation unit 40a, a second step isolation unit 40b, and a U-shaped isolation unit 50 between the first antenna 20 and the second antenna 30. The first antenna 20 and the second antenna 30 transmit signals through a first feed and a second feed, respectively. (Refer to...) Figure 2The figure shows the S-parameter diagram of the WLAN antenna provided by this utility model. The mutual isolation between frequency bands is greater than 30dB, which has a good isolation effect. It can reduce the distance between the first antenna 20 and the second antenna 30 while ensuring good isolation, so that the antennas are arranged compactly on the carrier plate 10, which is beneficial to reducing the area of ​​the carrier plate 10.

[0020] Reference Figure 1 In some embodiments, the first step isolation unit 40a and the second step isolation unit 40b are symmetrically arranged about the center line of the U-shaped isolation unit 50, and each includes a first isolation step 41 and a second isolation step 42 arranged in a stepped manner. Specifically, the first isolation step 41 and the second isolation step 42 of the first step isolation unit 40a face the second antenna 30, and the first isolation step 41 and the second isolation step 42 of the second step isolation unit 40b face the first antenna 20, and are symmetrically arranged about the center line of the U-shaped isolation unit 50. (Refer to...) Figure 1 In some embodiments, the isolation position 60 has a side opening 61, and the opening end of the U-shaped isolation unit 50 faces the side opening, which is beneficial for isolating and reflecting signals to the outside.

[0021] Reference Figure 1 In some embodiments, the width W1 of the first isolation step 41 is set to 2.5 mm and the height H1 is set to 3.3 mm, and the width W2 of the second isolation step 42 is set to 2.5 mm and the height H2 is set to 7.7 mm.

[0022] Reference Figure 1 In some embodiments, the U-shaped isolation unit 50 includes a first isolation long side 51, a second isolation long side 52, and an isolation short side 53. The first isolation long side 51 is connected to one end of the isolation short side 53, and the second isolation long side 52 is connected to the other end of the isolation short side 53. Preferably, the width W3 of the first isolation long side 51 is set to 1.25mm and the height H3 is set to 19mm, the width W4 of the second isolation long side 52 is set to 1.25mm and the height H4 is set to 19mm, and the width W5 of the isolation short side 53 is set to 1.5mm and the height H5 is set to 2mm.

[0023] Reference Figure 1 In some embodiments, the distance L between the first antenna 20 and the second antenna 30 is set to 30mm. By setting the first step isolation unit 40a, the second step isolation unit 40b and the U-shaped isolation unit 50, the distance between the two can be reduced while ensuring the signal transmission and reception of the first antenna 20 and the second antenna 30, thereby reducing the size of the carrier board 10, which is beneficial for miniaturization.

[0024] The advantages of this invention are: the above structure not only enables the WLAN antenna to operate in the 2.4GHz, 5GHz and 6GHz frequency bands, but also the mutual isolation between frequency bands is greater than 30dB. Combined with the radio frequency circuit, it can complete the 2T2R MIMO application and meet the usage requirements.

[0025] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications and substitutions are included within the scope defined by the claims of this application.

Claims

1. A compact WLAN antenna, characterized in that: It includes a carrier plate (10) and a first antenna (20), a second antenna (30), a first step isolation unit (40a), a second step isolation unit (40b) and a U-shaped isolation unit (50) disposed on the carrier plate (10); The first antenna (20) and the second antenna (30) are arranged on both sides of the carrier plate (10) and separated by an isolation position (60). The first step isolation unit (40a) is disposed within the isolation position (60) and close to the first antenna (20); The second step isolation unit (40b) is disposed within the isolation position (60) and close to the second antenna (30); The U-shaped isolation unit (50) is disposed within the isolation position (60) and located between the first step isolation unit (40a) and the second step isolation unit (40b).

2. A compact WLAN antenna according to claim 1, characterized in that: The first step isolation unit (40a) and the second step isolation unit (40b) are symmetrically arranged with the center line of the U-shaped isolation unit (50) as the axis, and each includes a first isolation step (41) and a second isolation step (42) arranged in a stepped manner.

3. A compact WLAN antenna according to claim 2, characterized in that: The width W1 of the first isolation step (41) is set to 2.5 mm and the height H1 is set to 3.3 mm.

4. A compact WLAN antenna according to claim 2, characterized in that: The width W2 of the second isolation step (42) is set to 2.5 mm and the height H2 is set to 7.7 mm.

5. A compact WLAN antenna according to claim 1, characterized in that: The isolation position (60) has a side opening (61), and the opening end of the U-shaped isolation unit (50) faces the side opening.

6. A compact WLAN antenna according to claim 1, characterized in that: The U-shaped isolation unit (50) includes a first isolation long side (51), a second isolation long side (52) and an isolation short side (53). The first isolation long side (51) is connected to one end of the isolation short side (53), and the second isolation long side (52) is connected to the other end of the isolation short side (53).

7. A compact WLAN antenna according to claim 6, characterized in that: The width W3 of the first isolation long side (51) is set to 1.25mm and the height H3 is set to 19mm, the width W4 of the second isolation long side (52) is set to 1.25mm and the height H4 is set to 19mm, and the width W5 of the isolation short side (53) is set to 1.5mm and the height H5 is set to 2mm.

8. A compact WLAN antenna according to claim 1, characterized in that: The distance L between the first antenna (20) and the second antenna (30) is set to 30mm.

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