Ultra-small WIFI6E band LDS antenna suitable for SMD assembly

Abstract

The utility model relates to a super small WIFI6E frequency band LDS antenna suitable for SMD assembly, including antenna support and PCB mainboard, be equipped with antenna radiation circuit on the antenna support, as WIFI6E antenna part, be equipped with the clearance area on the PCB mainboard, the antenna support is pasted to the clearance area on the PCB mainboard through SMD mode. The utility model antenna is based on the function of WIFI6E antenna that engraves the LDS antenna wiring on the high temperature resistant plastic material, is much smaller than the size of traditional FPC and LDS antenna, and can SMD to the mainboard of equipment, and the antenna size can reach the shoulder ceramic antenna, but has better antenna performance than ceramic antenna.

Description

Technical Field

[0001] This utility model relates to the field of wireless communication technology, specifically to an ultra-small WIFI 6E band LDS antenna suitable for SMD assembly. Background Technology

[0002] With the development of wireless communication technology, the current mainstream WiFi frequency band is WiFi 6, and we are about to enter the WiFi 6E era. The main change is the widening of the spectrum. The 6 GHz band has more channels and less interference, which can provide a more stable connection and a higher transmission rate.

[0003] Traditional small-sized WIFI6E antennas generally require the use of ceramic dielectrics, that is, high dielectric constant ceramics with silver paste cured at high temperature to achieve antenna performance.

[0004] This invention utilizes laser-engraved LDS antenna traces on a high-temperature resistant plastic material to achieve the function of a WIFI 6E antenna. It is significantly smaller than traditional FPC and LDS antennas and can be SMD-mounted onto the device's motherboard. The antenna size is comparable to ceramic antennas, but it boasts superior antenna performance. Utility Model Content

[0005] The purpose of this invention is to overcome the problems existing in the prior art and provide an ultra-small WIFI 6E band LDS antenna suitable for SMD assembly. The WIFI 6E antenna function is realized by laser engraving LDS antenna traces on high temperature resistant plastic material. It is much smaller than traditional FPC and LDS antennas and can be SMD mounted on the motherboard of the device. The antenna size can be comparable to that of ceramic antennas, but it has better antenna performance than ceramic antennas.

[0006] To achieve the above-mentioned technical objectives and effects, this utility model is implemented through the following technical solution: An ultra-small WIFI 6E band LDS antenna suitable for SMD assembly includes an antenna bracket and a PCB motherboard. The antenna bracket is provided with antenna radiation lines as the WIFI 6E antenna part. The PCB motherboard has a clearance area. The antenna bracket is mounted to the clearance area of ​​the PCB motherboard by SMD assembly.

[0007] Furthermore, the clearance area is provided with antenna feed point pads, antenna ground feed point pads, and antenna parasitic ground feed point pads, which are respectively connected to the pads on the antenna radiation line. Each pad is electrically connected to the motherboard circuit on the PCB motherboard through a signal transmission line to form the signal transmission path of the entire antenna.

[0008] Furthermore, the antenna radiation line extends to the bottom of the antenna support and forms a power feed pad 1, a ground feed pad 2, and an independent antenna parasitic pad 3. The power feed pad 1 is welded to the antenna power feed point pad, the ground feed pad 2 is welded to the antenna ground feed point pad, and the independent antenna parasitic pad 3 is welded to the antenna parasitic ground feed point pad, forming a complete structural connection and antenna signal electrical connection.

[0009] Furthermore, the clearance area is a rectangular area on both sides of one corner of the PCB motherboard. The outermost corner of the rectangular area is provided with a fixed pad, and the other three corners are respectively provided with an antenna feed point pad, an antenna ground feed point pad, and an antenna parasitic ground feed point pad. The fixed pad is welded together with the structural fixed pad 4 provided at the bottom of the antenna bracket to provide structural connection strength.

[0010] Furthermore, the signal transmission line is a "π" type matched network signal line.

[0011] Furthermore, the antenna radiating lines are set on the antenna support using LDS laser engraving technology.

[0012] Furthermore, the antenna support is a plastic support.

[0013] The beneficial effects of this utility model are: This utility model antenna achieves the function of a WIFI 6E antenna by laser-engraving LDS antenna traces on a high-temperature resistant plastic material. It is much smaller than traditional FPC and LDS antennas and can be SMD mounted on the motherboard of a device. The antenna size can be comparable to that of a ceramic antenna, but it has better antenna performance than a ceramic antenna. Attached Figure Description

[0014] Figure 1 This is a front view of the antenna support and antenna radiation circuit of this utility model; Figure 2 This is a top-view perspective three-dimensional structural diagram of the antenna support and antenna radiation circuit of this utility model; Figure 3 This is a three-dimensional structural view of the antenna support and antenna radiation circuit of this utility model from a bottom view. Figure 4 This is a structural diagram of the PCB motherboard with a clear area according to this utility model; Figure 5 This is a diagram of the antenna assembly structure of this utility model; Figure 6 This is a diagram showing the antenna return loss of this utility model. Figure 7 This is a diagram showing the passive efficiency of the antenna of this utility model.

[0015] The labels in the diagram are as follows: A, Antenna bracket; B, Antenna radiation line; B1, Feed pad; B2, Ground pad; B3, Independent antenna parasitic pad; B4, Structural fixing pad; C, Clearance area; D, Antenna feed point pad; E, Antenna ground feed point pad; F, Antenna parasitic ground feed point pad; G, Signal transmission line; H, PCB motherboard; I, Fixing pad. Detailed Implementation

[0016] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0017] like Figure 1 , Figure 2 and Figure 5 As shown, an ultra-small WIFI 6E band LDS antenna suitable for SMD assembly includes an antenna bracket A and a PCB motherboard H. The antenna bracket A is provided with an antenna radiation line B, which serves as the WIFI 6E antenna part to realize the WIFI 6E wideband antenna signal communication function. The PCB motherboard H is provided with a clearance area C, and the antenna bracket A is mounted to the clearance area C of the PCB motherboard H by SMD method.

[0018] like Figure 4 As shown, the clearance area C is provided with antenna feed pad D, antenna ground feed pad E, and antenna parasitic ground feed pad F, which are respectively connected to the pads on the antenna radiation line B. Each pad is electrically connected to the motherboard circuit on the PCB motherboard H through the signal transmission line G, forming the signal transmission path of the entire antenna.

[0019] like Figure 3 As shown, the antenna radiation line B extends to the bottom of the antenna support A and forms a feed pad B1, a ground pad B2, and an independent antenna parasitic pad B3. The feed pad B1 is welded to the antenna feed point pad D, the ground pad B2 is welded to the antenna ground feed point pad E, and the independent antenna parasitic pad B3 is welded to the antenna parasitic ground feed point pad F, forming a complete structural connection and antenna signal electrical connection.

[0020] The clearance area C is a rectangular area on both sides of a corner of the PCB motherboard H. In this embodiment, the rectangular area on both sides of the PCB motherboard H is 7.67mm × 5.48mm. The outermost corner of the rectangular area is provided with a fixed pad I, and the other three corners are respectively provided with an antenna feed pad D, an antenna ground feed pad E, and an antenna parasitic ground feed pad F. In this embodiment, the antenna feed pad D is located at the innermost corner of the rectangular area, and the antenna ground feed pad E and the antenna parasitic ground feed pad F are located at the remaining two opposite corners of the rectangular area. The fixed pad I is welded together with the structural fixed pad B4 provided at the bottom of the antenna bracket A to provide structural connection strength.

[0021] The signal transmission line G is a "π" type matching network signal line, which is laid out on the PCB motherboard H. The antenna performance is achieved by adjusting the antenna radiation line B and the matching network on the PCB motherboard H.

[0022] The antenna radiating line B is set on the antenna bracket A using LDS laser engraving technology.

[0023] The antenna bracket A is a plastic bracket that is insulated and resistant to high temperatures.

[0024] like Figure 6 The figure shows the return loss diagram of the WIFI6E antenna of this utility model. As can be seen from the figure, the value in the frequency bands of 2.4~2.5GHz and 5.15~7.125GHz is below -5dB, which meets the performance standard.

[0025] like Figure 7 The figure shows the passive efficiency diagram of the WIFI6E antenna of this utility model. As can be seen from the figure, the efficiency reaches more than 40% in the 2.4GHz band and more than 50% in the 5GHz~7GHz band. It outperforms ceramic antennas of the same size.

[0026] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A miniature Wi-Fi 6E band LDS antenna suitable for SMD assembly, comprising an antenna bracket (A) and a PCB motherboard (H), wherein the antenna bracket (A) is provided with an antenna radiation line (B) as the Wi-Fi 6E antenna part, characterized in that, The PCB motherboard (H) has a clearance area (C), and the antenna bracket (A) is mounted to the clearance area (C) of the PCB motherboard (H) by means of SMD.

2. The ultra-miniature WIFI 6E band LDS antenna suitable for SMD assembly according to claim 1, characterized in that, The clearance area (C) is provided with antenna feed pads (D), antenna ground feed pads (E), and antenna parasitic ground feed pads (F) that are connected to the pads on the antenna radiation line (B). Each pad is electrically connected to the main board circuit on the PCB main board (H) through the signal transmission line (G) to form the signal transmission path of the entire antenna.

3. The ultra-miniature WIFI 6E band LDS antenna suitable for SMD assembly according to claim 2, characterized in that, The antenna radiating line (B) extends to the bottom of the antenna support (A) and forms a feed pad (B1), a ground pad (B2), and an independent antenna parasitic pad (B3). The feed pad (B1) is welded to the antenna feed point pad (D), the ground pad (B2) is welded to the antenna ground feed point pad (E), and the independent antenna parasitic pad (B3) is welded to the antenna parasitic ground feed point pad (F), forming a complete structural connection and antenna signal electrical connection.

4. The ultra-miniature WIFI 6E band LDS antenna suitable for SMD assembly according to claim 3, characterized in that, The clearance area (C) is a rectangular area on both sides of a corner of the PCB motherboard (H). The outermost corner of the rectangular area is provided with a fixed pad (I), and the other three corners are respectively provided with an antenna feed pad (D), an antenna ground feed pad (E), and an antenna parasitic ground feed pad (F). The fixed pad (I) is welded together with the structural fixed pad (B4) provided at the bottom of the antenna bracket (A) to provide structural connection strength.

5. The ultra-miniature WIFI 6E band LDS antenna suitable for SMD assembly according to claim 4, characterized in that, The signal transmission line (G) is a "π" type matched network signal line.

6. The ultra-miniature WIFI 6E band LDS antenna suitable for SMD assembly according to claim 1 or 5, characterized in that, The antenna radiation line (B) is set on the antenna bracket (A) by LDS laser engraving process.

7. The ultra-miniature WIFI 6E band LDS antenna suitable for SMD assembly according to claim 6, characterized in that, The antenna bracket (A) is a plastic bracket.

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