WIFI antenna with enhanced anti-interference performance

Abstract

The utility model discloses an enhanced anti-interference WIFI antenna, which relates to the technical field of built-in antennas, and comprises a support sheet, an antenna balun is arranged on the front surface of the support sheet, a director is arranged on the antenna balun, an output port of the director is connected with two feed probes, the antenna balun is arranged in an antenna radiator, and the antenna radiator is connected with the antenna balun. The antenna radiator is provided with a feed point area, the supporting sheet on the periphery of the antenna balun is provided with a grounding through hole, and a gap is reserved between the antenna balun and the edge of the supporting sheet. The utility model provides a WIFI antenna with enhanced anti-interference performance, which comprises a PCB oscillator and an RF radio frequency line, the antenna is a copper foil on the PCB, in order to enhance the anti-interference performance of the antenna, the position of an antenna balun is designed in an antenna radiator, the radiation area of the antenna is increased to enhance the anti-interference performance, the interference performance of the built-in antenna due to a mainboard of a whole machine is reduced, and the anti-interference performance of the antenna is improved. The OTA data is improved when the whole machine is tested, and the practicability is higher.

Description

TECHNICAL FIELD

[0001] The utility model relates to built-in antenna technical field, concretely is a WIFI antenna of enhanced anti -interference. BACKGROUND

[0002] Balun is a kind of converter connecting balanced transmission line (such as twisted pair) to unbalanced transmission line (such as coaxial cable), it is mainly used for balanced unbalanced conversion, prevents high-frequency current from flowing through cable sheath skin, to affect the radiating effect of antenna, and balun is through isolation transmission line and provides balanced output, ensures that signal keeps balanced state in transmission process.

[0003] However, the existing built-in antenna has the problem of weak anti-interference, and it is urgent to design a built-in antenna technical scheme using PCB board for design, using PIFA type for debugging, increasing the radiator by changing balun to enhance anti-interference.

[0004] Therefore, in view of the above, the existing structure is studied and improved, and a WIFI antenna with enhanced anti-interference is provided. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a WIFI antenna with enhanced anti-interference to solve the problems in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical scheme: a WIFI antenna with enhanced anti-interference, including support sheet, the support sheet front is provided with antenna balun, and antenna balun is provided with director, and two feed probes are connected to the output port of director, the antenna balun is arranged in the antenna radiator, and the antenna radiator is provided with a feed point area.

[0007] Further, the support sheet around the antenna balun is provided with a grounding via, and the antenna balun and the edge of the support sheet have a gap.

[0008] Further, the antenna balun is arranged in a "Z" shape on the support sheet, and the antenna balun is electrically connected to the feed point area on the antenna radiator through the feed probe.

[0009] Further, the support sheet is located on the substrate, and the substrate is provided with a main ground wire.

[0010] Further, the support sheet and the substrate gap upper layer are provided with a grounding copper foil, and the grounding copper foil is connected with the main ground wire on the substrate.

[0011] Further, the support sheet and the substrate gap lower layer are provided with a metal shielding cover, and the metal shielding cover is made of metal material.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1, the utility model discloses PCB oscillator, RF radio frequency line, the antenna is the copper foil on PCB board, in order to enhance the problem of this antenna anti -interference, the position of antenna balun is designed in the antenna radiator, increase the radiation area of antenna to enhance the interference resistance, for this to reduce the built -in antenna because the interference of whole machine mainboard, make whole machine test when the OTA data get promotion.

[0014] 2, the utility model discloses in using, first, through the layout design of antenna balun on the support sheet is " Z " shape, under the condition of cavity space limitation, avoid the signal delay and reflection caused by U type wiring, second, antenna balun passes through the electric connection of the feed probe of the two ends of director and the feed point area on antenna radiator, increase the radiation unit of antenna balun and the wide band of antenna through the setting of director, finally, through the metal shield and ground copper foil between substrate and support sheet, isolate digital circuit noise, the above-mentioned three technical schemes are combined and can effectively improve the anti -interference performance of the antenna balun of the application. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is whole structure schematic diagram of the utility model device;

[0016] Fig. 2 It is explosion structure schematic diagram of the utility model device;

[0017] Fig. 3 It is overhead structure schematic diagram of the utility model device.

[0018] In the drawing: 1, support sheet;2, antenna balun;3, director;4, feed probe;5, antenna radiator;6, feed point area;7, substrate;8, ground copper foil;9, metal shield. DETAILED DESCRIPTION

[0019] The embodiments of the utility model will be further described in detail below in combination with the drawings and examples. The following examples are used to illustrate the utility model, but cannot be used to limit the scope of the utility model.

[0020] As Figs. 1-3 Shown, a kind of enhanced anti-interference WIFI antenna, including support sheet 1, support sheet 1 front is provided with antenna balun 2, and antenna balun 2 is provided with director 3, and director 3 output port is connected with two feed probes 4, antenna balun 2 is set in antenna radiator 5, and antenna radiator 5 is equipped with feed point area 6, support sheet 1 on the periphery of antenna balun 2 is equipped with ground via, and antenna balun 2 and support sheet 1 edge leave gap;

[0021] The specific operation is as follows: the application includes a PCB vibrator, an RF radio frequency line, and an antenna is a copper foil on a PCB board. In order to enhance the anti-interference performance of the antenna, the position of the antenna balun 2 is designed inside the antenna radiator 5, the radiation area of the antenna is increased to enhance the anti-interference performance, and the OTA data is improved during the whole machine test.

[0022] As shown in Figs. 1-3 The antenna balun 2 is arranged in a “Z” shape on the support sheet 1, and the antenna balun 2 is electrically connected to the feed point area 6 on the antenna radiator 5 through the feed probe 4. The support sheet 1 is located on the substrate 7, and the substrate 7 is provided with a main ground line. The gap between the support sheet 1 and the substrate 7 is provided with a ground copper foil 8, and the ground copper foil 8 is connected to the main ground line on the substrate 7. The gap between the support sheet 1 and the substrate 7 is provided with a metal shielding cover 9, and the metal shielding cover 9 is made of metal.

[0023] The specific operation is as follows: first, the layout of the antenna balun 2 on the support sheet 1 is designed in a “Z” shape to avoid signal delay and reflection caused by U-shaped wiring in the case of limited cavity space. Second, the antenna balun 2 is electrically connected to the feed point area 6 on the antenna radiator 5 through the feed probe 4 at both ends of the director 3. The setting of the director 3 increases the radiation unit of the antenna balun 2 and the wideband of the antenna. Finally, the metal shielding cover 9 and the ground copper foil 8 are added between the substrate 7 and the support sheet 1 to isolate the digital circuit noise. The combination of the above three technical solutions can effectively improve the anti-interference performance of the antenna balun 2 of the application.

[0024] The working principle is as follows: when using the WIFI antenna with enhanced anti-interference performance, the application includes a PCB vibrator, an RF radio frequency line, and an antenna is a copper foil on a PCB board. In order to enhance the anti-interference performance of the antenna, the position of the antenna balun 2 is designed inside the antenna radiator 5, the radiation area of the antenna is increased to enhance the anti-interference performance, and the OTA data is improved during the whole machine test. First, the layout of the antenna balun 2 on the support sheet 1 is designed in a “Z” shape to avoid signal delay and reflection caused by U-shaped wiring in the case of limited cavity space. Second, the antenna balun 2 is electrically connected to the feed point area 6 on the antenna radiator 5 through the feed probe 4 at both ends of the director 3. The setting of the director 3 increases the radiation unit of the antenna balun 2 and the wideband of the antenna. Finally, the metal shielding cover 9 and the ground copper foil 8 are added between the substrate 7 and the support sheet 1 to isolate the digital circuit noise. The combination of the above three technical solutions can effectively improve the anti-interference performance of the antenna balun 2 of the application.

[0025] The embodiments of the present application are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present application to the forms disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. Embodiments were chosen and described in order to best explain the principles of the present application and its practical application, and to thereby enable others skilled in the art to best utilize the present application with various modifications as are suited to the particular use contemplated.

Claims

1. A WIFI antenna with enhanced interference resistance, comprising a support sheet (1), characterized in that, The support sheet (1) is provided with an antenna balun (2) on the front side, and the antenna balun (2) is provided with a director (3), and two feeding probes (4) are connected to the output port of the director (3), the antenna balun (2) is arranged in the antenna radiator (5), and the antenna radiator (5) is provided with a feed point area (6).

2. The enhanced anti-interference WIFI antenna according to claim 1, wherein, The support sheet (1) around the antenna balun (2) is provided with a grounding via hole, and the antenna balun (2) and the support sheet (1) edge have a gap.

3. The enhanced anti-interference WIFI antenna according to claim 2, wherein, The antenna balun (2) is arranged in a "Z" shape on the support sheet (1), and the antenna balun (2) is electrically connected to the feed point area (6) on the antenna radiator (5) through the feeding probe (4).

4. The enhanced anti-interference WIFI antenna according to claim 3, wherein, The support sheet (1) is located on the substrate (7), and the substrate (7) is provided with a main ground wire.

5. The enhanced anti-interference WIFI antenna according to claim 4, wherein, The support sheet (1) and the substrate (7) gap upper layer is provided with a grounding copper foil (8), and the grounding copper foil (8) is connected with the main ground wire on the substrate (7).

6. The enhanced anti-interference WIFI antenna according to claim 5, wherein, The support sheet (1) and the substrate (7) gap lower layer is provided with a metal shielding cover (9), and the metal shielding cover (9) is made of metal material.

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