TWM564263U - Dual-band dipole antenna - Google Patents

Abstract

A dual-frequency dipole antenna comprising a dielectric substrate and a first radiating element, a second radiating element and a wire connecting portion respectively disposed on the dielectric substrate, wherein: the first radiating element and the net The wire connecting portions are respectively disposed on a first surface of the dielectric substrate, the second radiating element is disposed on a second surface of the dielectric substrate, and the second radiating element is transmitted through a through hole disposed on the dielectric substrate It is electrically connected to the network cable connecting portion. Thereby, the creation can form independent low-frequency paths and high-frequency paths respectively, thereby reducing the mutual influence between the high and low-frequency paths and improving the convenience of adjustment, and at the same time, bending and high by the low-frequency path. The frequency path is placed inside the architecture of the overall antenna, so that no additional extension path is required to excite the frequency band, thereby effectively reducing the antenna area size.

Description

Dual frequency dipole antenna

This creation is about an antenna structure.

According to the conventional dipole antenna, the two metal radiators are respectively connected to the core wire and the wire of a transmission line such as a coaxial cable, and the modern Most of the dipole antennas are changed or improved on the basis of the above-mentioned conventional structure. For example, patent documents such as the Republic of China patents No. I256752, No. I323530, No. I356526, No. I381579, and No. M466367 are disclosed separately. The purpose of creating a dipole antenna is to enhance or improve the function or characteristics of the antenna.

However, the dipole antenna disclosed in the aforementioned patent is generally composed of one or more metal layers which are relatively single in shape and structure and lack of variation, so that the antenna is to be added or retained. If the current path is sufficient to maintain its characteristics, the size is bound to be difficult to shrink, resulting in a larger dipole antenna in the above patent. In addition, conventional dipole antennas are often designed to share high and low frequency paths, which are easy to interact with each other. It is obviously inconvenient to adjust, which greatly affects its practicability.

Therefore, how to improve the above-mentioned deficiencies is the technical difficulty that the creators of this case want to solve.

In view of the above problems of the conventional dipole antenna, the purpose of this creation is to develop a dipole antenna that can be downsized.

Another purpose of this creation is to develop a dual-frequency dipole antenna that avoids the interaction of high frequency and low frequency paths and is easy to adjust.

In order to achieve the above objective, the present invention provides a dual-frequency dipole antenna including a dielectric substrate and a first radiating element, a second radiating element, and a wire connecting portion respectively disposed on the dielectric substrate. Wherein: the dielectric substrate has a first surface and an opposite second surface, the dielectric substrate is provided with a uniform hole, and the dielectric substrate has a first side and a second side respectively located in the longitudinal direction and parallel to each other And a third side and a fourth side of the dielectric substrate respectively disposed in the width direction and parallel to each other; the first radiating element is disposed on the first surface, and the first radiating element is provided with a core a feeding portion, the core feeding portion is disposed at a position slightly offset from a center of the first substrate side of the dielectric substrate, and the first radiating element is further provided with a first oblique branch and a second oblique portion respectively a first high frequency radiating portion and two first low frequency radiating portions, wherein one end of the first oblique branch and one end of the second oblique branch are respectively connected to the core feeding portion, The first high-frequency radiating portions are horizontally horizontally elongated, and one ends of the two first high-frequency radiating portions are respectively connected to the first oblique branching side and the second oblique branching side, The other end of each of the first high-frequency radiation portions is closer to the first side, and the other ends of the two first high-frequency radiation portions are extended toward the opposite directions to form a first bend. The two first low-frequency radiating portions are horizontally horizontally elongated, and one ends of the two first low-frequency radiating portions are respectively connected to the other end of the first oblique branch and the second oblique branch The other end of each of the first low-frequency radiating portions is adjacent to the first side, and the other ends of the two first low-frequency radiating portions are respectively formed with a second bent portion; the network cable The connecting portion is disposed on the first surface, and the wire connecting portion is disposed at a position of the center of the dielectric substrate slightly offset from a side of the second side; the second radiating element is disposed on the second surface The second radiating element is provided with a wire feeding portion, the position of the wire feeding portion is corresponding to the position of the wire connecting portion, and the through hole of the dielectric substrate is respectively penetrated through the wire connecting portion and the wire feeding The second radiating element is further provided with a third oblique branch, a fourth oblique branch, two second high frequency radiating portions and two second low frequency radiating portions, wherein the third oblique direction One end of the branch and one end of the fourth oblique branch are respectively connected to the wire feeding portion, and the two second high-frequency radiating portions are horizontally horizontally elongated, and the two second high-frequency radiation One end of the portion is respectively connected to the third oblique branch side and the fourth oblique branch side, and the other end of each of the second high frequency radiating portions is closer to the second side, and the two The other ends of the second high-frequency radiating portions are extended and protruded toward each other in opposite directions to form respectively a third bent portion, the two second low frequency radiating portions are horizontally horizontally elongated, and one ends of the two second low frequency radiating portions are respectively connected to the other end of the third oblique branch and the first At the other end of the four oblique branches, the other end of each of the second low frequency radiating portions is adjacent to the second side, and the other ends of the two second low frequency radiating portions are respectively formed with a fourth bent portion.

Wherein, the second radiating element and the first radiating element are symmetric structures.

The first oblique branch and the second oblique branch respectively extend to a side to which the first high-frequency radiation portion is not connected, and a first impedance matching component, the third oblique branch and the fourth The second branching matching element is also connected to the side of the oblique branch which is not connected to the second high-frequency radiation portion.

Further, each of the first impedance matching component and each of the second impedances The matching components are all trapezoidal.

Thereby, the creation can form independent low-frequency paths and high-frequency paths respectively, thereby reducing the mutual influence between the high and low-frequency paths and improving the convenience of adjustment, and at the same time, bending and high by the low-frequency path. The frequency path is placed inside the architecture of the overall antenna, so that no additional extension path is required to excite the frequency band, thereby effectively reducing the antenna area size.

1‧‧‧ dielectric substrate

11‧‧‧ first surface

12‧‧‧ second surface

13‧‧‧Tongkong

14‧‧‧First side

15‧‧‧Second side

16‧‧‧ third side

17‧‧‧ fourth side

2‧‧‧First radiating element

21‧‧‧core feeding department

22‧‧‧First oblique branch

221‧‧‧ first end

222‧‧‧ second end

23‧‧‧Second oblique branch

231‧‧‧ first end

232‧‧‧ second end

24‧‧‧First High Frequency Radiation Department

241‧‧‧First bend

25‧‧‧First Low Frequency Radiation Department

251‧‧‧Second bend

26‧‧‧First impedance matching component

3‧‧‧Second radiating element

31‧‧‧Network Feeding Department

32‧‧‧The third oblique branch

321‧‧‧ first end

322‧‧‧ second end

33‧‧‧4th oblique branch

331‧‧‧ first end

332‧‧‧ second end

34‧‧‧Second high frequency radiation department

341‧‧‧ Third bend

35‧‧‧Second low frequency radiation department

351‧‧‧Fourth bend

36‧‧‧Second impedance matching component

4‧‧‧Network cable connection

The first figure is a perspective view of one embodiment of the present creation.

The second figure is a schematic structural view of the first surface of one embodiment of the present creation.

The third figure is a schematic structural view of the second surface of one embodiment of the present creation.

The fourth figure is a graph of the reflection loss characteristic of one embodiment of the present creation.

In the present specification, terms such as up, down, left, right, front, back, etc., used to indicate azimuth, are merely for convenience of explanation and understanding of the relative position or structure of the constituent elements of the present invention in a particular drawing. Relationships are not intended to limit the scope of the patent for this creation.

Please refer to the first, second and third figures, which are respectively a perspective view of one embodiment of the dual-frequency dipole antenna and a schematic diagram of different surfaces of the upper and lower surfaces, the dual-frequency dipole. The antenna includes a dielectric substrate 1 and a first radiating element 2, a second radiating element 3 and a wire connecting portion 4 respectively disposed on the dielectric substrate 1. The dielectric substrate 1 has a first surface 11 And a corresponding second surface 12, the dielectric substrate 1 is provided with a common via 13, the dielectric substrate 1 is rectangular, that is, the dielectric substrate 1 has a first one in the longitudinal direction and parallel to each other. Side 14 and a second side The side 15 (ie, the short side), and the dielectric substrate 1 also has a third side 16 and a fourth side 17 (ie, long sides) respectively located in the width direction and parallel to each other.

The first radiating element 2 is disposed on the first surface 11. Please continue to refer to the second figure. The first radiating element 2 is provided with a core feeding portion 21 for a transmission line such as a coaxial cable. The core wire feeding portion 21 is disposed at a position on a side of the center of the dielectric substrate 1 slightly offset from the first side edge 14 , and the first radiating element 2 is further provided with a first An oblique branch 22, a second oblique branch 23, two first high frequency radiating portions 24, and two first low frequency radiating portions 25, wherein the first oblique branches 22 have a first The end 221 and the second end 222 are connected to the core feeding portion 21, and the first oblique branch 22 is connected from the first end 221 to the second end 222 thereof toward the first side 14 And the direction of the third side 16 is inclined, and the first oblique branch 22 is gradually narrowed from the first end 221 to the second end 222 thereof, and the second oblique branch 23 has a first An end 231 and a second end 232 are connected to the core feeding portion 21, and the second oblique branch 23 is from the first end 231 to the second end thereof. The 232 is inclined toward the first side 14 and the fourth side 17, and the second oblique branch 23 is gradually narrowed from its first end 231 to its second end 232, thereby being The first oblique branch 22 and the second oblique branch 23 are similarly shaped like a "ㄑ", and the two first high-frequency radiating portions 24 are horizontally horizontally elongated, and the two One end of a high-frequency radiating portion 24 is connected to one side of the first oblique branch 22 and the second oblique branch 23, and the other end of each of the first high-frequency radiating portions 24 is closer to the The first side 14 and the other ends of the two first high-frequency radiating portions 24 extend toward each other in a direction opposite to each other to form a first bent portion 241, the two first low-frequency radiations The portion 25 is a horizontally elongated strip, and one ends of the two first low frequency radiating portions 25 are respectively connected to the second end 222 of the first oblique branch 22 and the second end of the second oblique branch 23 End 232, each of the first low frequency radiating portions 25 The other end of the first low-frequency radiating portion 25 is respectively formed with a second bent portion 251. Further, in one embodiment of the present creation, the first oblique portion is formed. A first impedance matching component 26 is extendably coupled to the branch 22 on a side to which the first high frequency radiating portion 24 is not connected. The second oblique branch 23 is not connected to the first high frequency radiating portion 24 One side of the impedance matching component 26 can also be connected to the first impedance matching component 26, and the first impedance matching component 26 is trapezoidal.

The network cable connecting portion 4 is disposed on the first surface 11 for soldering a transmission line such as a network cable of a coaxial cable (not shown), and the network cable connecting portion 4 is disposed at the center of the dielectric substrate 1. It is located at a position on one side of the second side 15 direction.

The second radiating element 3 is disposed on the second surface 12. Please continue to refer to the third figure. The second radiating element 3 is provided with a wire feeding portion 31, the position of the wire feeding portion 31 and the wire. The position of the connecting portion 4 corresponds to the through hole 13 of the dielectric substrate 1 and the wire feeding portion 31 and the wire feeding portion 31, respectively, thereby allowing the wire feeding portion 31 to pass through the through hole 13 The second radiating element 3 is further provided with a third oblique branch 32, a fourth oblique branch 33, and two second high frequency radiating portions 34. And the second low-frequency radiating portion 35, wherein the third oblique branch 32 has a first end 321 and a second end 322, and the first end 321 is connected to the wire feeding portion 31. The third oblique branch 32 is inclined from the first end 321 to the second end 322 thereof toward the second side 15 and the third side 16, and the third oblique branch 32 is from the first end thereof The second end 322 is gradually widened by a narrow portion, and the fourth oblique branch 33 has a first end 331 and a second end 332 respectively. The first end 331 is connected to the wire feeding. a portion 31, the fourth oblique branch 33 is inclined from a first end 331 to a second end 332 thereof toward the second side 15 and the fourth side 17, and the fourth oblique branch 33 is The first end 331 to the second end 332 thereof are gradually widened by the narrowing, whereby the third oblique branch 32 and the fourth oblique branch 33 are substantially reversed in their entirety. In the shape of a "ㄑ", the two second high-frequency radiating portions 34 are horizontally elongated, and one ends of the two second high-frequency radiating portions 34 are respectively connected to the third oblique branch 32 side. And the fourth oblique branch 33 side, and the other end of each of the second high frequency radiating portions 34 is closer to the second side 15 , and the other ends of the two second high frequency radiating portions 34 are A third bent portion 341 is formed to extend in a direction opposite to each other (face), and the two second low frequency radiating portions 35 are horizontally horizontally elongated, and the two second low frequency radiating portions 35 are One end is connected to the second end 322 of the third oblique branch 32 and the second end 332 of the fourth oblique branch 33, and the other end of each of the second low frequency radiating portions 35 is adjacent to the second side And the other ends of the two second low-frequency radiating portions 35 are respectively formed with a fourth bent portion 351. Further, in an embodiment of the present creation, the third oblique branch 32 is not connected to the first portion. A second impedance matching component 36 is connected to one side of the second high frequency radiating portion 34. The fourth oblique branch 33 is not connected to the second high frequency radiating portion 34. One side of the second impedance matching component 36 can also be connected to the second impedance matching component 36. The second impedance matching component 36 is also trapezoidal. More specifically, in the embodiment, the second radiating component 3 and the first radiating component 2 are both The structure is symmetrical.

Please refer to the fourth figure for the return loss characteristic curve of an embodiment of the present invention. It can be seen from the return loss characteristic curve that the antenna of the present invention is at a low frequency (specifically, 698 MHz-960 MHz). ) It has good impedance matching characteristics with high frequency bands (such as 1700MHz-2700MHz), so that the dipole antenna of the present invention can have good dual-frequency transmitting and receiving functions.

Referring to the second and third figures, the present invention has independent low-frequency radiation portions and high-frequency radiation portions, so that independent low-frequency paths and high-frequency paths can be formed separately, which not only have little mutual influence. There is also a great convenience in the adjustment. In addition, the low-frequency path is provided with a bend, and the high-frequency path is placed inside the structure of the whole antenna, so no need for another The outer extension path excites the frequency band, thereby effectively reducing the antenna area size, thereby greatly improving the practicality of the creation.

Claims (4)

A dual-frequency dipole antenna includes a dielectric substrate and a first radiating element, a second radiating element, and a wire connecting portion respectively disposed on the dielectric substrate, wherein the dielectric substrate has a first surface And a second surface, the dielectric substrate is provided with a uniform hole, the dielectric substrate has a first side and a second side which are parallel to each other in the longitudinal direction, and the dielectric substrate is also respectively located a third side and a fourth side in the width direction and parallel to each other; the first radiating element is disposed on the first surface, the first radiating element is provided with a core feeding portion, and the core feeding portion is disposed on the first side The center of the dielectric substrate is slightly offset from the side of the first side direction, and the first radiating element is further provided with a first oblique branch, a second oblique branch, and two first high frequency radiating portions. And two first low frequency radiating portions, wherein one end of the first oblique branch and one end of the second oblique branch are respectively connected to the core feeding portion, and the two first high frequency radiating portions are horizontal Tapped a strip shape, one ends of the two first high-frequency radiation portions are respectively connected to the first oblique branching side and the second oblique branching side, and the other end of each of the first high-frequency radiating portions is Close to the first side, and the other ends of the two first high-frequency radiating portions are extended toward the opposite directions to form a first bent portion, and the two first low-frequency radiating portions are horizontally horizontally One end of the two first low frequency radiating portions is respectively connected to the other end of the first oblique branch and the other end of the second oblique branch, and the other of the first low frequency radiating portions One end is adjacent to the first side, and the other ends of the two first low-frequency radiating portions are respectively formed with a second bent portion; the wire connecting portion is disposed on the first surface, and the wire connecting portion is disposed Positioning the center of the dielectric substrate slightly on one side of the second side direction; The second radiating element is disposed on the second surface, and the second radiating element is provided with a wire feeding portion, the position of the wire feeding portion corresponding to the position of the wire connecting portion, and the through hole of the dielectric substrate The second radiating element is further provided with a third oblique branch, a fourth oblique branch, two second high frequency radiating portions and two a second low frequency radiating portion, wherein one end of the third oblique branch and one end of the fourth oblique branch are respectively connected to the wire feeding portion, and the two second high frequency radiating portions are horizontally horizontally placed One end of the two second high-frequency radiating portions is respectively connected to the third oblique branching side and the fourth oblique branching side, and each of the second high-frequency radiating portions is further One end is closer to the second side, and the other ends of the two second high-frequency radiating portions are extended toward opposite directions to form a third bent portion, and the two second low-frequency radiating portions are respectively a horizontally elongated strip, one end of the two second low frequency radiating portions are respectively connected to the The other end of the third oblique branch and the other end of the fourth oblique branch, the other end of each of the second low frequency radiating portions is adjacent to the second side, and the other end of the two second low frequency radiating portions A fourth bent portion is formed respectively. The dual-frequency dipole antenna of claim 1, wherein the second radiating element and the first radiating element are symmetric structures. The dual-frequency dipole antenna according to claim 1, wherein the first oblique branch and the second oblique branch are respectively connected to a side on which the first high-frequency radiation portion is not connected. An impedance matching component, the third oblique branch and the fourth oblique branch are also respectively connected with a second impedance matching component on a side to which the second high frequency radiating portion is not connected. The dual-frequency dipole antenna according to claim 3, wherein each of the first impedance matching elements and each of the second impedance matching elements are trapezoidal.