Multiple antennas for wireless local area network

Abstract

A multi-antenna system for wireless local area networks (WLANs) is disposed on the surface of a base within a wireless access point. The multi-antenna system includes a first antenna group, a second antenna group, a third antenna group, and a single-frequency antenna. The first antenna group includes four dual-band antennas. These four dual-band antennas operate at 2.4 GHz and 5 GHz, and are positioned near the four edges of the base surface. The second antenna group is a 6 GHz antenna group with four printed circuit board (PCB) antennas. These four PCB antennas are horizontally placed on the base surface and are positioned near the four edges of the base surface; each PCB antenna has an eight-leaf branch. The third antenna group includes two tri-band antennas operating in three frequency bands: 2.4 GHz, 5 GHz, and 6 GHz. The single-frequency antenna is a 2.4 GHz omnidirectional antenna. This configuration achieves the requirements for radiation pattern design and multi-band operation.

Claims

1. A multi-antenna for a wireless local area network, disposed on the surface of a base within a wireless access point, the multi-antenna for the wireless local area network comprising: A first antenna group includes four dual-band antennas, each operating at 2.4 GHz and 5 GHz, positioned near the four edges of the base surface; a second antenna group, a 6 GHz antenna group, includes four printed circuit board antennas horizontally placed on the base surface, each positioned near the four edges of the base surface, and each printed circuit board antenna has an octagonal branch; a third antenna group includes two tri-band antennas operating in three frequency bands including 2.4 GHz, 5 GHz, and 6 GHz; and a single-band antenna, a 2.4 GHz omnidirectional antenna; each printed circuit board antenna includes a double-sided substrate, a first antenna body, and a second antenna body, the double-sided substrate having an upper surface and a lower surface, the first antenna... The first antenna body is disposed on the upper surface, and the second antenna body is disposed on the lower surface. The first antenna body has four main leaf branches, which are connected to a first center feed point, which is connected to the center conductor of the coaxial line. The second antenna body has four secondary leaf branches, which are connected to a second center feed point, which is connected to the outer conductor of the coaxial line. The four main leaf branches and the four secondary leaf branches are in a one-to-one correspondence to form the eight-leaf branch system. The four main leaf branches are radially distributed around the first center feed point, with 90-degree angular differences around the first center feed line. The four secondary leaf branches are radially distributed around the second center feed point, with 90-degree angular differences around the second center feed line.

2. The multi-antenna for a wireless local area network as described in claim 1, wherein each main leaf branch comprises a main extension segment and a main fan segment, wherein the main extension segment connects the first center feed point and the main fan segment, wherein a first end of the main fan segment is connected to the main extension segment, and a second end of the main fan segment extends in a direction perpendicular to the main extension segment; wherein, Each of the secondary blade branches consists of an extension segment and a fan blade segment, wherein the extension segment connects the second center feed point and the secondary fan blade segment, wherein a first end of the secondary fan blade segment is connected to the extension segment, and a second end of the secondary fan blade segment extends in a direction perpendicular to the extension segment; wherein, in the horizontal projection of the double-sided substrate, the main extension segment and the corresponding secondary extension segment overlap each other; wherein, in the horizontal projection of the double-sided substrate, the extension direction of the main fan blade segment and the extension direction of the corresponding secondary fan blade segment are far apart from each other; wherein, from the perspective of the upper surface, when the extension direction of the main fan blade segment is counterclockwise, the extension direction of the secondary fan blade segment is clockwise; from the perspective of the upper surface, when the extension direction of the main fan blade segment is clockwise, the extension direction of the secondary fan blade segment is counterclockwise.

3. The multi-antenna system for a wireless local area network as described in claim 2, wherein for one of the four printed circuit board antennas, the main fan blade segment extends in a counterclockwise direction, and for the other of the four printed circuit board antennas, the main fan blade segment extends in a clockwise direction.

4. The multi-antenna system for a wireless local area network as described in claim 2, wherein the main extension segment has a rectangular widening portion adjacent to the corresponding main fan segment; wherein, The widened rectangular section is used to adjust impedance matching.

5. The multi-antenna system for a wireless local area network as described in claim 4, wherein the main extension section has a field pattern adjustment unit for adjusting the radiation field pattern.

6. The multi-antenna system for a wireless local area network as described in claim 1, wherein the four dual-band antennas are planar inverted F-shaped antennas made entirely of metal and are erected on the surface of the base; wherein, The single-frequency antenna is erected on the surface of the base; while the two tri-frequency antennas are placed horizontally on the surface of the base.

7. The multi-antenna system for a wireless local area network as described in claim 1, wherein the first antenna group and the third antenna group are both 2.4 GHz and 5 GHz multi-input multi-output antennas.

8. The multiple antennas for a wireless local area network as described in claim 1, wherein the second antenna array is a 6 GHz multiple input multiple output antenna.

9. The multi-antenna system for a wireless local area network as described in claim 1, wherein the second antenna group and the third antenna group are both 6 GHz multi-input multi-output antennas.

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