CN212695312U

CN212695312U - FPC WiFi antenna and mobile communication equipment

Info

Publication number: CN212695312U
Application number: CN202022041224.0U
Authority: CN
Inventors: 孙晓波
Original assignee: Kunshan Yiqu Information Technology Research Institute Co ltd
Current assignee: Kunshan Yiqu Information Technology Research Institute Co ltd
Priority date: 2020-09-17
Filing date: 2020-09-17
Publication date: 2021-03-12
Anticipated expiration: 2030-09-17

Abstract

The utility model provides a FPC WiFi antenna and mobile communication equipment, FPC WiFi antenna includes FPC base plate, radiating element, ground plane and coaxial cable, the radiating element with the ground plane interval set up in the homonymy surface of FPC base plate, the radiating element is provided with the feed point, the ground plane is provided with the place, coaxial cable includes mutual insulation's heart yearn and shielding layer, the heart yearn with feed point electric connection, the shielding layer with place electric connection. The FPC WiFi antenna is formed by arranging the radiating unit and the grounding surface on the FPC substrate and electrically connecting the feed point on the radiating unit and the place on the grounding surface through the coaxial cable, so that the manufacturing process is simple, the radiation performance of the antenna is good, and the problem of reducing the manufacturing complexity of the FPC WiFi antenna to reduce the production cost while ensuring the radiation performance of the antenna is solved.

Description

FPC WiFi antenna and mobile communication equipment

Technical Field

The utility model relates to an antenna technology field, in particular to FPC wiFi antenna and mobile communication equipment.

Background

FPC (Flexible Printed Circuit) is a Flexible Printed Circuit board which is made of polyimide or polyester film as a base material and has high reliability and excellent properties. The FPC has the characteristics of high wiring density, light weight, thin thickness, and good bending property, and thus is widely used in the electronic manufacturing industry.

The FPC antenna is an antenna with a flexible circuit board as a substrate, can be well contacted with a mobile phone shell, and can be perfectly attached to a bent angle or a curved surface by utilizing the characteristic of good bending property of the FPC antenna, particularly the bent angle or the curved surface of the shell. In addition, the FPC antenna is generally thin, which can save the space inside the mobile phone. Therefore, the FPC antenna is applied in more and more scenes.

However, the FPC antenna in the prior art has technical problems of complicated production and manufacture, low yield in the manufacturing process, and the like, which limit the reduction of the production cost, and thus the cost of the FPC antenna is much higher than that of other antennas, which is not favorable for the cost control of the mobile communication device.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a FPC wiFi antenna and mobile communication equipment to solve current FPC wiFi antenna and make complicacy, problem that manufacturing cost is high.

In order to solve the technical problem, the utility model provides a FPC WiFi antenna, FPC WiFi antenna includes FPC base plate, radiating element, ground plane and coaxial cable, the radiating element with the ground plane interval set up in the homonymy surface of FPC base plate, the radiating element is provided with the feed point, the ground plane is provided with the place, coaxial cable includes mutual insulation's heart yearn and shielding layer, the heart yearn with feed point electric connection, the shielding layer with place electric connection.

Optionally, in the FPC WiFi antenna, the radiating element and the ground plane are disposed in parallel on the same side surface of the FPC substrate, and a center line of the radiating element coincides with a center line of the ground plane.

Optionally, in the FPC WiFi antenna, the radiating element and the ground plane are both rectangular.

Optionally, in the FPC WiFi antenna, the length of the radiating element along the center line direction is 11.5 ± 0.05 mm; the length of the vertical center line direction is 12.5 +/-0.05 mm.

Optionally, in the FPC WiFi antenna, the length of the ground plane along the center line direction is 13.5 ± 0.05 mm; the length of the steel wire rope in the direction vertical to the center line is 17.5 +/-0.05 mm.

Optionally, in the FPC WiFi antenna, a distance between the radiation unit and the ground plane is at most 1 mm.

Optionally, in the FPC WiFi antenna, the feeding point is disposed at a center position of one side of the radiating element close to the ground plane, and the location is disposed at a center position of one side of the ground plane close to the radiating element.

Optionally, in the FPC WiFi antenna, the radiation unit and the ground plane are both made of copper.

Optionally, in the FPC WiFi antenna, the coaxial cable further includes a dielectric layer and a protective layer, the dielectric layer covers the core wire, the shielding layer covers the dielectric layer, and the protective layer covers the shielding layer.

In order to solve the technical problem, the utility model provides a mobile communication equipment is still provided, mobile communication equipment includes as above arbitrary FPC wiFi antenna.

Drawings

Fig. 1 is a schematic structural diagram of an FPC WiFi antenna provided in this embodiment;

fig. 2 is a schematic structural diagram of a coaxial cable provided in this embodiment;

wherein the reference numerals are as follows:

10-FPC substrate; 20-a radiating element; 21-a feeding point; 30-a ground plane; 31-a location; 40-coaxial cable; 41-core wire; 42-a dielectric layer; 43-a shielding layer; 44-protective layer.

Detailed Description

The FPC WiFi antenna and the mobile communication device provided by the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention. Further, the structures illustrated in the drawings are often part of actual structures. In particular, the drawings may have different emphasis points and may sometimes be scaled differently.

This embodiment provides an FPC WiFi antenna, as shown in FIG. 1, FPC WiFi antenna includes FPC base plate 10, radiating element 20, ground plane 30 and coaxial cable 40, radiating element 20 with ground plane 30 interval set up in FPC base plate 10's homonymy surface, radiating element 20 is provided with feed point 21, ground plane 30 is provided with place 31, coaxial cable 40 includes mutual insulating heart yearn 41 and shielding layer 43, heart yearn 41 with feed point 21 electric connection, shielding layer 43 with place 31 electric connection.

The FPC WiFi antenna provided in this embodiment is configured by disposing the radiation unit 20 and the ground plane 30 on the FPC substrate 10, and electrically connecting the feeding point 21 on the radiation unit 20 and the place 31 on the ground plane 30 through the coaxial cable 40, so that the manufacturing process is simple and the radiation performance of the antenna is good, and the problem of how to reduce the manufacturing complexity of the FPC WiFi antenna to reduce the production cost while ensuring the radiation performance of the antenna is solved.

In this embodiment, the radiating element 20 and the ground plane 30 are disposed in parallel on the same side surface of the FPC board 10, and a center line of the radiating element 20 coincides with a center line of the ground plane 30. Because the radiating element 20 and the ground plane 30 are located on the same side of the FPC substrate 10, the connection between the coaxial cable 40 and the radiating element 20 and the ground plane 30 can be conveniently implemented without using a hole or the like on the FPC substrate 10. Meanwhile, the radiating element 20 and the ground plane 30 are arranged in parallel, and the center lines of the radiating element 20 and the ground plane 30 are overlapped, so that the coupling efficiency between the radiating element 20 and the ground plane 30 can be effectively improved, the loss between the radiating element and the ground plane can be reduced, and the radiation performance of the antenna can be effectively improved.

Further, in the FPC WiFi antenna provided in this embodiment, the radiation unit 20 and the ground plane 30 are both rectangular. The design of rectangle can make the radiation of wiFi antenna concentrate, and does benefit to the preparation when the production is makeed.

Specifically, in the present embodiment, the length of the radiation unit 20 along the center line direction is 11.5 ± 0.05mm, and the length perpendicular to the center line direction is 12.5 ± 0.05 mm; the length of the ground plane 30 along the center line direction is 13.5 mm plus or minus 0.05 mm; the length of the steel wire rope in the direction vertical to the center line is 17.5 +/-0.05 mm. This dimension is closely related to the operating frequency of the antenna, which can be varied by adjusting the dimensions of the radiating element 20 or the ground plane 30. The working frequency range of the FPC WiFi antenna provided by this embodiment is 5100MHz to 5850 MHz.

Preferably, the distance between the radiating element 20 and the ground plane 30 is at most 1 mm. In practical applications, the closer the distance between the radiating element 20 and the ground plane 30 is, the better the distance is, without short-circuiting, so that the radiating element 20 and the ground plane 30 can be well coupled to improve the radiation performance of the WiFi antenna.

In this embodiment, the material of the radiating element 20 and the ground plane 30 is copper. The feeding point 21 is disposed at a center position of a side of the radiating element 20 close to the ground plane 30, and the spot 31 is disposed at a center position of a side of the ground plane 30 close to the radiating element 20. In this way, when the coaxial cable 40 is connected to the feeding point 21 and the ground 31, only a small portion of the core wire 41 and the shielding layer 43 can be exposed, and short circuit at the feeding point 21 and the ground 31 can be prevented. Meanwhile, by disposing the feeding point 21 and the ground point 31 at the position of the central axis, the current emitted from the feeding point 21 can be made to uniformly flow throughout the radiation element 20; and the feeding point 21 and the point 31 are adjacently arranged, the coupling efficiency of the antenna can be improved. Thus, the radiation performance of the WiFi antenna can be optimized.

The coaxial cable 40 selected in this embodiment has a structure as shown in fig. 2, and includes, from inside to outside, a core wire 41, a dielectric layer 42, a shielding layer 43, and a protective layer 44 in sequence, where the dielectric layer 42 covers the core wire 41, the shielding layer 43 covers the dielectric layer 42, and the protective layer 44 covers the shielding layer 43. The core wire 41 may be a single core wire or a multi-core wire composed of a plurality of strands of copper wire. Dielectric layer 42 is typically an insulating plastic material such as FEP. The shield 43 is typically a metal braid, which is typically a tin-plated alloy wire. The protective layer 44 is a protective layer for the cable, and is usually made of PFA.

Typically, the core 41 of the coaxial cable 40 will be connected to the feed point of the antenna and the shield 43 will be connected to the antenna site. In the present embodiment, the core wire 41 of the coaxial cable 40 is soldered to the feeding point of the antenna, and the shielding layer 43 is soldered to the antenna, so that the coaxial cable 40 is electrically connected to the radiating element 20 and the ground plane 30.

The embodiment also provides a mobile communication device, which comprises the FPC WiFi antenna. Because the WiFi antenna that this embodiment provided is the FPC material, consequently can attach in arbitrary surface of mobile communication equipment, and need only take off the FPC antenna when needing to change the antenna and maintain, it can to attach again.

The mobile communication device provided by the embodiment has the FPC WiFi antenna, so that the internal space of the mobile communication device can be saved, and the FPC WiFi antenna is simple in structure and low in manufacturing cost, so that the manufacturing cost of the mobile communication device is low.

To sum up, the FPC wiFi antenna and the mobile communication equipment that a simple structure, cost are low, the transmission signal is effectual that this embodiment provided, FPC wiFi antenna includes FPC base plate, radiating element, ground plane and coaxial cable, the radiating element with the ground plane interval set up in FPC base plate's homonymy surface, the radiating element is provided with the feed point, the ground plane is provided with the place, coaxial cable includes insulated heart yearn and shielding layer each other, the heart yearn with feed point electric connection, shielding layer with place electric connection. The FPC WiFi antenna is formed by arranging the radiating unit and the grounding surface on the FPC substrate and electrically connecting the feed point on the radiating unit and the place on the grounding surface through the coaxial cable, so that the manufacturing process is simple, the radiation performance of the antenna is good, and the problem of reducing the manufacturing complexity of the FPC WiFi antenna to reduce the production cost while ensuring the radiation performance of the antenna is solved.

The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and any modification and modification made by those skilled in the art according to the above disclosure are all within the scope of the claims.

Claims

1. The utility model provides a FPC WiFi antenna, its characterized in that, FPC WiFi antenna includes FPC base plate, radiating element, ground plane and coaxial cable, the radiating element with the ground plane interval set up in the homonymy surface of FPC base plate, the radiating element is provided with the feed point, the ground plane is provided with the place, coaxial cable includes mutual insulation's heart yearn and shielding layer, the heart yearn with feed point electric connection, the shielding layer with place electric connection.

2. The FPC WiFi antenna of claim 1, wherein the radiating element and the ground plane are disposed in parallel on a same side surface of the FPC substrate, and a center line of the radiating element coincides with a center line of the ground plane.

3. The FPC WiFi antenna of claim 2, wherein the radiating element and the ground plane are both rectangular.

4. The FPC WiFi antenna of claim 3, wherein the radiating element is 11.5 ± 0.05mm long in the direction of the center line; the length of the vertical center line direction is 12.5 +/-0.05 mm.

5. The FPC WiFi antenna of claim 4, wherein the length of the ground plane in the direction of the center line is 13.5 ± 0.05 mm; the length of the steel wire rope in the direction vertical to the center line is 17.5 +/-0.05 mm.

6. The FPC WiFi antenna of claim 1, wherein a spacing between the radiating element and the ground plane is at most 1 mm.

7. The FPC WiFi antenna of claim 1, wherein the feeding point is disposed at a center position of one side of the radiating element close to the ground plane, and the position is disposed at a center position of one side of the ground plane close to the radiating element.

8. The FPC WiFi antenna of claim 1, wherein the radiating element and the ground plane are both copper.

9. The FPC WiFi antenna of claim 1, wherein the coaxial cable further comprises a dielectric layer and a protective layer, the dielectric layer covers the core wire, the shielding layer covers the dielectric layer, and the protective layer covers the shielding layer.

10. A mobile communication device, characterized in that it comprises a FPC WiFi antenna as claimed in any one of claims 1-9.