TWM589373U - Wide band antenna - Google Patents

Abstract

This creative department provides a broadband antenna, the main features of which include: a printed circuit board including a first side surface and a second side surface; a ground radiating portion, which is provided on the first side surface; and a ground point, connected through a connection section Ground radiating part; a feeding radiating part, which is provided on the second side surface; a feeding point, connected to the feeding radiating part through the feeding signal line; a threading hole, penetrating the first side surface and the second side surface; a coupling The element is provided on the second side surface and is arranged at a distance from the feed point, and the coupling element and the ground radiation part are in a coupling relationship; a coaxial cable, the feed line and the ground line of which are electrically connected to the ground point and the feed point, respectively .

Description

Broadband antenna

This creation relates to an antenna, in particular to a revealer of the innovative structure of a broadband antenna.

With the current vigorous development of the wireless communication industry, more and more information needs to be transmitted through wireless communication, which relatively leads to an increase in bandwidth demand.

However, most of today's electronic devices are developing toward miniaturization, which makes the space for configuring broadband antennas in electronic devices more and more limited. Therefore, how to design a broadband antenna in a limited space to meet the diversification of broadband wireless communication frequency bands Demand has become an important issue.

However, as the demand for mobile broadband access continues to increase at the user end, the related industries must still further improve the existing various broadband antenna technologies, such as gaining their broadband efficiency functions, in order to respond to more diverse uses Consumer demand.

Therefore, in view of the problems existing in the above-mentioned conventional broadband antenna technology, how to develop an innovative structure with more ideal and practicality is really the goal and direction of the relevant industry to make further efforts to develop breakthroughs; in view of this, the creator is based on Years of experience in manufacturing development and design of related products, in accordance with the above goals, after detailed design and careful evaluation, we finally have a practical creation.

The main purpose of this creation is to provide a broadband antenna, and the technical problems it wants to solve are aimed at how to develop a new type of broadband antenna structure that is more practical and innovative.

Based on the foregoing purpose, the present invention provides a broadband antenna, including: a printed circuit board including a first side surface and a second side surface facing the opposite; a ground radiating portion provided on the first side surface of the printed circuit board A ground point, which is electrically connected to the ground radiating portion through the connection section; a feed radiating portion, which is provided on the second side surface of the printed circuit board; a feed point, through a feed signal line and the feed radiating portion Electrical connection; a threading hole that penetrates the first side surface and the second side surface of the printed circuit board, and makes the location of the threading hole adjacent or opposite to the feed point and the ground point; a coupling element is provided on the printed circuit board The second side surface is spaced apart from the feed point, and the coupling element is located at a side away from the feed radiation part, and constitutes a coupling relationship between the coupling element and the ground radiation part; a coaxial cable with insulation One of the configuration relationships is the feed line and the ground line, where the ground line is electrically connected to the ground point, and the feed line is electrically connected to the feed point through the threading hole.

With this innovative unique structure type and technical features, the creation can be compared with the prior art, so that the ground radiation part and the feed radiation part can be provided on the first side surface and the second side surface of the printed circuit board to make the ground The radiating part and the feeding radiating part generate a coupling effect through the non-coplanar waveguide type, and at the same time match the coupling relationship and configuration type between the coupling element and the ground radiating part, so that the broadband antenna has a better broadband The practical progress of the effect, and the full use of the surface structure of the broadband antenna, has the advantage of reducing the antenna material area.

Another purpose of this creation is that a second coupling element is further provided at a distance between the first side surface of the printed circuit board and the ground radiation portion, and the second coupling element is coupled with the feeding radiation portion Another technical feature of the relationship is to make the high-frequency part of the broadband antenna have the effect of bandwidth regain and practical advancement.

Please refer to Figures 1, 2, 3, and 4 for a preferred embodiment of the original broadband antenna. However, these embodiments are for illustrative purposes only, and are not limited by this structure in patent applications.

The broadband antenna includes the following structures: a printed circuit board 10 including a first side surface 11 and a second side surface 12 facing the opposite side; a ground radiation portion 20 provided on the first side of the printed circuit board 10 Side surface 11; a ground point 21, electrically connected to the ground radiating portion 20 through a connecting section 22 (Note: the connecting section 22 has a radiation assist effect); a feeding radiating section 30 is provided on the printed circuit The second side surface 12 of the board 10; a feeding point 31, which is electrically connected to the feeding radiating portion 30 through a feeding signal line 32; a threading hole 40, penetrating the first side surface 11 of the printed circuit board 10 And the second side surface 12, and the position of the threading hole 40 is adjacent to or opposite to the feed point 31 and the ground point 21; a coupling element 50 is provided on the second side surface 11 of the printed circuit board 10 and There is a spaced relationship with the feed point 31, and the coupling element 50 is located at a side away from the feed radiating portion 30, and constitutes a coupling relationship between the coupling element 50 and the ground radiating portion 20; a coaxial The cable 60 has a feed line 61 and a ground line 62 in an insulated configuration, wherein the ground line 62 is electrically connected to the ground point 21, and the feed line 61 passes through the threading hole 40 and the feed point 31 Electrical connection.

Based on the structure and technical characteristics of the above structure, if the broadband antenna disclosed in the present invention is measured by a network analyzer in the form of the foregoing embodiment, the results are as shown in Figure 5, and the measurement curve of this S11 The measurement frequency range (shown on the horizontal axis of the graph) is 400 MHz to 6.5 GHz. In order to enable the reader to understand the efficiency advantages of this creation in detail, the operating frequency range of a conventional broadband antenna is presented in Figure 10 S11 measurement curve parameter chart for comparison; comparison of the linear microwave network characteristics presented in Figure 5 and Figure 10 can prove that the broadband antenna disclosed by this creation corresponds to the vertical axis value VSWR 3.0 below the high and low frequencies. The area range can obviously produce the effect of bandwidth gain, and the reason why this effect can be produced depends on the fact that the ground radiating part 20 and the feeding radiating part 30 in this creation are located in the first place of the printed circuit board 10 The side surface 11 and the second side surface 12 cause a coupling effect between the ground radiating portion 20 and the feed-in radiating portion 30, and at the same time match the coupling relationship and configuration type between the coupling element 50 and the ground radiating portion 20, Furthermore, the broadband antenna can achieve a better broadband effect, so as to improve the commonality of broadband antenna products; on the other hand, because the ground radiating portion 20 and the feeding radiating portion 30 in this creation are located first on the printed circuit board 10 The side surface 11 and the second side surface 12 allow the surface structure of the broadband antenna to be fully utilized, and therefore have the advantage of reducing the antenna material area.

As shown in FIG. 2, in this example, the ground radiating portion 20 is set to a monopole antenna (Monopole Antenna) type, so that the ground radiating portion 20 includes a left section 203 and a right section 205, the An insulating region 207 is provided between the lower end of the left side section 203 and the right side section 205; the grounding point 21 extends upward two connecting sections 22, and the upper ends of the two connecting sections 22 and the left section are respectively 203. The upper end of the right side section 205 is electrically connected.

As shown in FIG. 6, in this example, the ground radiating portion 20 is set as a dipole antenna (Dipole Antenna) type, so that the ground radiating portion 20 includes a left section 203 and a right section 205, the The lower end of the left side section 203 and the right side section 205 are electrically connected to each other in an integrated form; the grounding point 21 extends upward to form two connecting sections 22, and the upper ends of the two connecting sections 22 are respectively connected to the The upper ends of the left section 203 and the right section 205 are electrically connected.

As shown in FIGS. 7 and 8, in this example, a second coupling element 70 is further provided at a distance between the first side surface 11 of the printed circuit board 10 and the ground radiation portion 20, and the second coupling element 70 There is a coupling relationship with the feeding radiation part 30. For the purpose of adding the second coupling element 70 in this example, please refer to FIG. 9, which is based on the measurement result of the network analyzer according to the type of this embodiment. Comparing the examples, it can be found that this example corresponds to the range of the vertical axis value below VSWR 3.0 near the high frequency band (6.0~6.5GHz), which can again produce a state in which the curve peak is suppressed and widened; thus it can be seen that this example For the high frequency part, it has the effect of bandwidth regain.

10. Printed circuit board 11. The first side surface 12‧‧‧Second side surface 20‧‧‧Earth Radiation Department 203‧‧‧Left section 205‧‧‧Right section 207‧‧‧Insulated area 21‧‧‧Ground point 22 ‧‧‧ connection section 30‧‧‧Feed into the Radiation Department 31‧‧‧Feeding point 32‧‧‧Feed in signal line 40‧‧‧Threading hole 50‧‧‧Coupling element 60‧‧‧Coaxial cable 61.‧‧‧Feeding line 62‧‧‧Ground wire 70‧‧‧Second coupling element

Figure 1 is a perspective view of a preferred embodiment of the original broadband antenna. FIG. 2 is a plan view of the first side surface of the preferred embodiment of the present broadband antenna. FIG. 3 is a plan view of the second side surface of the preferred embodiment of the present broadband antenna. Figure 4 is a section 4-4 of Figure 3. Figure 5 is a measurement curve of the operating frequency range S11 of the implementation modes disclosed in Figures 1 to 4 Parameter map. Figure 6 is a diagram of an embodiment in which the grounded radiation part of this creation is configured as a dipole antenna. FIG. 7 is a plan view of an embodiment in which a second coupling element is added to this creation. FIG. 8 is a perspective view of the embodiment disclosed in FIG. 7. Figure 9 is a measurement curve of the operating frequency range S11 of the implementation modes disclosed in Figures 7 to 8 Parameter map. FIG. 10 is a graph of measurement curve parameters of the operating frequency range S11 of a conventional broadband antenna.

10‧‧‧ printed circuit board

11‧‧‧First side surface

12‧‧‧Second side surface

20‧‧‧Earth Radiation Department

203‧‧‧left section

205‧‧‧Right section

22‧‧‧ Connection section

30‧‧‧Feed into the Radiation Department

31‧‧‧Feeding point

32‧‧‧Feed in signal line

40‧‧‧Threading hole

50‧‧‧Coupling element

60‧‧‧Coaxial cable

61‧‧‧Feeding line

Claims (4)

A broadband antenna, including: A printed circuit board, including a first side surface and a second side surface facing the opposite; A ground radiating portion, which is provided on the first side surface of the printed circuit board; A ground point, which is electrically connected to the ground radiation part through the connection section; A feeding radiating portion, which is provided on the second side surface of the printed circuit board; A feed-in point is electrically connected to the feed-in radiating part through a feed-in signal line; A threading hole penetrating the first side surface and the second side surface of the printed circuit board, and the location of the threading hole is adjacent to or located at the feeding point and the grounding point; A coupling element is provided on the second side surface of the printed circuit board and is spaced apart from the feed point, and the coupling element is located at a side away from the feeding radiation part, and constitutes the coupling element and the There is a coupling relationship between the ground radiation section; and A coaxial cable has a feed line and a ground line in an insulated configuration, wherein the ground line is electrically connected to the ground point, and the feed line is electrically connected to the feed point through the threading hole. The broadband antenna as described in item 1 of the patent application scope, wherein a second coupling element is further provided at a distance between the first side surface of the printed circuit board and the ground radiation portion, and the second coupling element and the feed There is a coupling relationship between the radiating parts. The broadband antenna according to item 1 or 2 of the patent application scope, wherein the ground radiating portion is set as a monopole antenna type, so that the ground radiating portion includes a left side section and a right side section, the left side section An insulating area is provided between the lower end of the right side section; the grounding point extends upward two connecting sections, and the upper ends of the two connecting sections are electrically connected to the upper ends of the left and right sections, respectively . The broadband antenna according to item 1 or 2 of the patent application scope, wherein the ground radiating portion is set as a dipole antenna type, so that the ground radiating portion includes a left side section and a right side section, the left side section And the lower end of the right section are electrically connected to each other in an integrated form; the ground point extends upward to form two connection sections, and the upper ends of the two connection sections are respectively connected to the left and right sections The upper end is electrically connected.

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