CN210443667U

CN210443667U - Broadband antenna

Info

Publication number: CN210443667U
Application number: CN201921800160.9U
Authority: CN
Inventors: 罗家镇
Original assignee: Wha Yu Industrial Co Ltd
Current assignee: Wha Yu Industrial Co Ltd
Priority date: 2019-10-24
Filing date: 2019-10-24
Publication date: 2020-05-01
Anticipated expiration: 2029-10-24

Abstract

The utility model discloses a broadband antenna, its key feature includes: a printed circuit board including a first side surface and a second side surface; the grounding radiation part is arranged on the first side surface; a grounding point connected to the grounding radiation part through the connection section; a feed-in radiation part arranged on the second side surface; a feed-in point connected to the feed-in radiation part via a feed-in signal line; a threading hole penetrating through the first side surface and the second side surface; the coupling component is arranged on the second side surface and is arranged at intervals with the feed-in point, and the coupling component and the grounding radiation part are in a coupling relation; a coaxial cable, the feed-in wire and the grounding wire of which are electrically connected with the grounding point and the feed-in point respectively.

Description

Broadband antenna

Technical Field

The present invention relates to an antenna, and more particularly to an innovative structure of a broadband antenna.

Background

With the rapid development of the wireless communication industry, more and more information needs to be transmitted through wireless communication, which relatively results in the increase of bandwidth requirement.

However, the trend of miniaturization of electronic devices is leading to more and more limited space for configuring the broadband antenna in the electronic devices, and therefore, how to design the broadband antenna in the limited space to meet the multiple requirements of the broadband wireless communication frequency band has become an important issue.

However, as the demand of mobile broadband access from the user terminal continues to increase, the related industries still need to make further improvements to the existing broadband antenna technologies, such as increasing the broadband efficiency, in order to meet the demand of more diversified users.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide a broadband antenna.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a wideband antenna, comprising: a printed circuit board including a first side surface and a second side surface facing opposite sides; the grounding radiation part is arranged on the first side surface of the printed circuit board; the grounding point is electrically connected with the grounding radiation part through the connecting section; a feed-in radiation part arranged on the second side surface of the printed circuit board; a feed-in point electrically connected to the feed-in radiation part via a feed-in signal line; the threading hole penetrates through the first side surface and the second side surface of the printed circuit board, and the threading hole is adjacent to or opposite to the feed-in point and the grounding point; the coupling component is arranged on the second side surface of the printed circuit board and is in spaced configuration relation with the feed-in point, is positioned at one side far away from the feed-in radiation part and forms a coupling relation between the coupling component and the grounding radiation part; a coaxial cable having a feeding line and a grounding line in an insulated configuration, wherein the grounding line is electrically connected to the grounding point, and the feeding line passes through the threading hole and is electrically connected to the feeding point.

By this innovation unique structure form and technical characteristic, make the utility model discloses contrast prior art, accessible ground radiation portion and feed-in radiation part establish at printed circuit board's first side surface and second side surface, make ground radiation portion and feed-in radiation portion produce the coupling effect through non-coplanar waveguide form between the two, collocation coupling component and ground radiation portion between the two are the coupling relation and the configuration form simultaneously, and then make broadband antenna reach the practical progress nature that has better broadband effect, and let broadband antenna's surface texture obtain make full use of, more have the advantage of reduction antenna material area.

Another objective of the present invention is to further provide a second coupling component at a position spaced from the ground radiation portion by the first side surface of the printed circuit board, and the second coupling component and the feed-in radiation portion are coupled to each other, so that the high frequency portion of the broadband antenna has the efficiency of bandwidth re-gain and practical improvement.

Drawings

Fig. 1 is a perspective view of a preferred embodiment of the broadband antenna of the present invention.

Fig. 2 is a plan view of a first side surface of a preferred embodiment of the broadband antenna of the present invention.

FIG. 3 is a plan view of a second side surface of a preferred embodiment of the broadband antenna of the present invention.

Fig. 4 is a cross-sectional view 4-4 of fig. 3.

FIG. 5 is a parameter graph of the operating frequency range S11 measurement curve of the embodiment shown in FIGS. 1-4.

Fig. 6 is a diagram illustrating an embodiment of the ground radiation portion in a dipole antenna configuration.

FIG. 7 is a plan view of an embodiment of the present invention with a second coupling component added.

Fig. 8 is a perspective view of the embodiment shown in fig. 7.

FIG. 9 is a parameter graph of the operating frequency range S11 measurement curve of the embodiment shown in FIGS. 7-8.

FIG. 10 is a parameter plot of a conventional broadband antenna operating frequency range S11 measurement curve.

Detailed Description

Please refer to fig. 1, fig. 2, fig. 3, and fig. 4, which are preferred embodiments of the wideband antenna of the present invention, but these embodiments are only for illustrative purposes and are not limited by the structure in the patent application.

The broadband antenna system comprises the following components: a printed circuit board 10 including a first side surface 11 and a second side surface 12 facing opposite; a grounding radiation part 20 disposed on the first side surface 11 of the printed circuit board 10; a grounding point 21 electrically connected to the grounding radiation portion 20 through a connection section 22 (note that the connection section 22 has a radiation auxiliary effect); a feed radiation part 30 disposed on the second side surface 12 of the printed circuit board 10; a feeding point 31 electrically connected to the feeding radiation part 30 through a feeding signal line 32; a threading hole 40 penetrating through the first side surface 11 and the second side surface 12 of the printed circuit board 10, the threading hole 40 being located adjacent to or opposite to the feeding point 31 and the grounding point 21; a coupling component 50 disposed on a second side surface 11 of the printed circuit board 10 and spaced apart from the feeding point 31, wherein the coupling component 50 is located at a side away from the feeding radiating portion 30 and forms a coupling relationship between the coupling component 50 and the grounding radiating portion 20; a coaxial cable 60 having a feeding line 61 and a grounding line 62 disposed in an insulating relationship, wherein the grounding line 62 is electrically connected to the grounding point 21, and the feeding line 61 passes through the threading hole 40 and is electrically connected to the feeding point 31.

Through the above structure composition forms and technical features, if the broadband antenna of the present invention is measured by the network analyzer in the above embodiment forms, the result is shown in fig. 5, the measurement frequency range of the S11 measurement curve chart (i.e. the horizontal axis of the curve chart is shown) is 400MHz to 6.5GHz, so that the reader can specifically understand the efficacy advantages of the present invention, further, the operation frequency range S11 measurement curve parameter chart of the known broadband antenna is shown in fig. 10 for comparison; comparing the linear microwave network characteristics shown in fig. 5 and fig. 10, it can be proved that the broadband antenna of the present invention can obviously generate the bandwidth gain effect within the range of the region below the corresponding vertical axis value VSWR 3.0 near the high and low frequencies, and this effect can be generated, the important factor depends on the fact that the grounding radiation part 20 and the feed-in radiation part 30 of the present invention are respectively disposed on the first side surface 11 and the second side surface 12 of the printed circuit board 10, so that the coupling effect is generated between the grounding radiation part 20 and the feed-in radiation part 30, and the coupling relationship and configuration form between the coupling component 50 and the grounding radiation part 20 are matched, so as to make the broadband antenna achieve better broadband effect, and improve the sharing performance of the broadband antenna product; on the other hand, since the ground radiation portion 20 and the feed radiation portion 30 are respectively disposed on the first side surface 11 and the second side surface 12 of the printed circuit board 10, the surface structure of the broadband antenna can be fully utilized, and therefore, the broadband antenna has the advantage of reducing the area of the antenna material.

As shown in fig. 2, in the present embodiment, the ground radiation portion 20 is configured as a Monopole Antenna (Monopole Antenna), such that the ground radiation portion 20 includes a left section 203 and a right section 205, and an insulation region 207 is disposed between the lower ends of the left section 203 and the right section 205; the grounding point 21 extends upwards to form two connecting sections 22, and the upper ends of the two connecting sections 22 are electrically connected to the upper ends of the left side section 203 and the right side section 205, respectively.

As shown in fig. 6, in the present embodiment, the ground radiation portion 20 is configured as a Dipole Antenna (Dipole Antenna), such that the ground radiation portion 20 includes a left section 203 and a right section 205, and the lower ends of the left section 203 and the right section 205 are electrically connected to each other in an integrated manner; the grounding point 21 extends upward to form two connecting sections 22, and the upper ends of the two connecting sections 22 are electrically connected to the upper ends of the left side section 203 and the right side section 205, respectively.

As shown in fig. 7 and 8, in this embodiment, a second coupling element 70 is further disposed at a position where the first side surface 11 of the printed circuit board 10 is spaced from the ground radiation portion 20, and the second coupling element 70 and the feed radiation portion 30 are in a coupling relationship. Fig. 9 shows the purpose of adding the second coupling element 70 in this embodiment, which is based on the result of the measurement performed by the network analyzer according to this embodiment, if compared with the foregoing embodiment of the present invention shown in fig. 5, it can be found that the curve peak of this embodiment is suppressed and widened in the vicinity of the high frequency band (6.0 to 6.5GHz) corresponding to the region range below the vertical axis value VSWR of 3.0; it can be seen that this example has the effect of bandwidth re-gain for high frequency portions.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A wideband antenna, comprising:

a printed circuit board including a first side surface and a second side surface facing opposite;

the grounding radiation part is arranged on the first side surface of the printed circuit board;

the grounding point is electrically connected with the grounding radiation part through the connecting section;

a feed-in radiation part arranged on the second side surface of the printed circuit board;

a feed-in point electrically connected to the feed-in radiation part via a feed-in signal line;

the threading hole penetrates through the first side surface and the second side surface of the printed circuit board, and the threading hole is adjacent to or opposite to the feed point and the grounding point;

the coupling component is arranged on the second side surface of the printed circuit board and is in spaced configuration relation with the feed-in point, is positioned at one side far away from the feed-in radiation part and forms a coupling relation between the coupling component and the grounding radiation part; and

the coaxial cable is provided with a feed-in line and a grounding line which are in an insulated configuration relationship, wherein the grounding line is electrically connected with the grounding point, and the feed-in line passes through the threading hole and is electrically connected with the feed-in point.

2. The broadband antenna of claim 1, wherein a second coupling element is further disposed at a location spaced apart from the ground radiating portion on the first side surface of the printed circuit board, the second coupling element being coupled to the feed radiating portion.

3. The broadband antenna according to claim 1 or 2, wherein the ground radiating portion is configured as a monopole antenna, such that the ground radiating portion includes a left section and a right section, and an insulating region is disposed between lower ends of the left and right sections; the grounding point extends upwards to form two connecting sections, and the upper ends of the two connecting sections are electrically connected to the upper ends of the left side section and the right side section, respectively.

4. The broadband antenna according to claim 1 or 2, wherein the ground radiating portion is configured as a dipole antenna, such that the ground radiating portion includes a left section and a right section, and lower ends of the left and right sections are electrically connected to each other in an integrated manner; the grounding point extends upwards to form two connecting sections, and the upper ends of the two connecting sections are electrically connected with the upper ends of the left side section and the right side section respectively.