CN210576447U - Radiating element and dipole antenna - Google Patents
Radiating element and dipole antenna Download PDFInfo
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- CN210576447U CN210576447U CN201922009634.4U CN201922009634U CN210576447U CN 210576447 U CN210576447 U CN 210576447U CN 201922009634 U CN201922009634 U CN 201922009634U CN 210576447 U CN210576447 U CN 210576447U
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Abstract
The utility model discloses a radiating element and dipole antenna, the radiating element includes: a first dielectric substrate; at least two annular radiation arms which are arranged on any surface of the first medium substrate in pairs; the extension part is formed by extending from the annular radiation arm to the inside of the annular radiation arm; the balun is positioned on the side, facing away from the annular radiation arm, of the first dielectric substrate, and is connected to a feed source and connected to the annular radiation arm through the first dielectric substrate. The technical scheme of the utility model through the adjustment the size of extension portion can be adjusted radiating element's impedance matching characteristic makes its broadband demand that satisfies the antenna to realize that whole radiating surface structure is succinct, miniaturized, but have better batch production nature and economic benefits.
Description
Technical Field
The utility model relates to the field of communication technology, especially, relate to a radiating element and dipole antenna.
Background
In the prior art, the height of the radiation unit of the dipole antenna is about 0.25 central frequency wavelength, which results in the over-high overall height of the radiation unit, i.e., the profile of the half-wave dipole antenna is high, which is not beneficial to the miniaturization of the dipole antenna.
SUMMERY OF THE UTILITY MODEL
A primary object of the present invention is to provide a radiating element, which is designed to solve the problem of the prior art that the profile of a half-wave dipole antenna is high and is not suitable for the miniaturization of the dipole antenna.
In order to achieve the above object, the present invention provides a radiation unit, the radiation unit includes: a first dielectric substrate; at least two annular radiation arms which are arranged on any surface of the first medium substrate in pairs; the extension part is formed by extending from the annular radiation arm to the inside of the annular radiation arm; the balun is positioned on the side, facing away from the annular radiation arm, of the first dielectric substrate, and is connected to a feed source and connected to the annular radiation arm through the first dielectric substrate.
Preferably, the radiation unit includes four annular radiation arms, and the four annular radiation arms are arranged on two diagonal lines of the first dielectric substrate in two pairs.
Preferably, the radiation unit further includes two second dielectric substrates, the two second dielectric substrates are arranged in a cross-perpendicular manner, one end of the second dielectric substrate close to the first dielectric substrate is inserted into the first dielectric substrate, and the balun is arranged on the second dielectric substrate to realize connection with the annular radiation arm.
Preferably, through holes are formed in corners of the four annular radiation arms close to each other, and one end of the second dielectric substrate close to the first dielectric substrate penetrates through the through holes, so that the balun is connected with the annular radiation arms.
Preferably, the extension portion includes two branches, and extending directions of the two branches in the annular radiation arm are perpendicular to each other.
Preferably, a gap is formed between the roots of the two branches.
Preferably, when the second dielectric substrate is vertically placed, the height of the radiation unit is less than 0.15 central frequency wavelength.
Preferably, the operating frequency band of the radiation unit is 2.4 GHz-4.2 GHz.
In order to achieve the above object, the present invention further provides a dipole antenna, including at least one radiation unit as described in any one of the above embodiments, the dipole antenna further includes a reflection plate, and the radiation unit is disposed on the reflection plate.
The technical scheme of the utility model through the adjustment the size of extension portion can be adjusted radiating element's whole impedance match characteristic makes radiating element normal radiation in the frequency channel of requirement, makes it satisfy dipole antenna's broadband demand to realize that whole radiating surface structure is succinct, miniaturized, but has better batch production nature and economic benefits. For example, by adjusting the size of the extension portion, the operating frequency band of the radiation unit can be between 2.4GHz and 4.2GHz, and the overall height of the radiation unit is ensured to be less than 0.15 central frequency wavelength.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of a radiation unit of the present invention;
fig. 2 is a schematic diagram of an explosion structure of an embodiment of the radiation unit of the present invention;
fig. 3 is a schematic structural diagram of an embodiment of the annular radiation arm and the extension portion of the radiation unit of the present invention;
fig. 4 is a schematic structural diagram of an embodiment of the dipole antenna of the present invention.
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1-2, the present invention provides a radiation unit 100, wherein the radiation unit 100 includes: a first dielectric substrate 10; at least two annular radiation arms 20, wherein the annular radiation arms 20 are arranged in pairs in any surface blank area 21 of the first dielectric substrate 10; an extension portion 30, wherein the extension portion 30 is formed from the annular radiation arm 20 to extend into the blank region 21 of the annular radiation arm 20; a balun 40, wherein the balun 40 is located on a side of the first dielectric substrate 10 facing away from the annular radiation arm 20, and the balun 40 is connected to a feed source (not shown) and connected to the annular radiation arm 20 through the first dielectric substrate 10.
In the present embodiment, the first dielectric substrate 10 includes two opposite surfaces, and the overall shape of the first dielectric substrate 10 is preferably square, and it can be understood that the overall shape of the first dielectric substrate 10 can also be configured to be other shapes such as rectangle, circle, etc. The annular radiation arms 20 (also called array sub-arms) comprise at least two and are arranged on any one surface of the first medium substrate 10 in pairs, the annular radiating arm 20 is annular, that is, a blank area 21 is formed inside the annular radiating arm 20, that is, the annular radiating arm 20 is in a closed annular structure, the extended portion 30 is formed by extending from the annular radiating arm 20 to the blank area 21, and the extended portion 30 is formed by extending from each blank area 21, the overall impedance matching characteristic of the radiating element 100 can be adjusted by adjusting the size of the extension part 30, so that the broadband requirement of the dipole antenna is met, the radiating element radiates normally in the required frequency band, and the integral radiation surface structure is simple and miniaturized, and the method has better batch production performance and economic benefit. For example, by adjusting the size of the extension portion 30, the operating frequency band of the radiation unit 100 can be between 2.4GHz and 4.2GHz, and the overall height of the radiation unit 100 is ensured to be less than 0.15 central frequency wavelength.
Referring to fig. 1-2, optionally, the radiating element 100 includes four annular radiating arms 20, and the four annular radiating arms 20 are disposed on two diagonal lines of the first dielectric substrate 10 in two pairs.
In this embodiment, when the first dielectric substrate 10 is square, two pairs of the four annular radiating arms 20 are disposed on two diagonals of the first dielectric substrate 10, that is, one pair of the polarized dipoles is disposed on one of the diagonals to form a +45 ° polarized dipole, and the other pair of the polarized dipoles is disposed on the other diagonal to form a-45 ° polarized dipole.
Referring to fig. 2, optionally, the radiation unit 100 further includes two second dielectric substrates 50, the two second dielectric substrates 50 are disposed in a crossed manner, one end 51 of the second dielectric substrate 50 close to the first dielectric substrate 10 is disposed in the first dielectric substrate 10, and the balun 40 is disposed on the second dielectric substrate 50 to achieve connection with the annular radiation arm 20.
In this embodiment, the number of the second dielectric substrates 50 is two, and the two second dielectric substrates 50 are arranged in a cross-perpendicular manner, while the plane where each of the second dielectric substrates 50 is located is perpendicular to the plane where the first dielectric substrate 10 is located, and one end 51 of the second dielectric substrate 50 close to the first dielectric substrate 10 is inserted into the first dielectric substrate 10, so that on one hand, the connection stability between the first dielectric substrate 10 and the second dielectric substrate 50 can be enhanced, and at the same time, the balun 40 arranged on the second dielectric substrate 50 also passes through the first dielectric substrate 10 to be connected with the annular radiating arm 20, so as to feed the annular radiating arm 20 through the balun 40.
Referring to fig. 3, optionally, through holes 22 are formed on the corners of the four annular radiating arms 20 close to each other, and one end 51 of the second dielectric substrate 50 close to the first dielectric substrate 10 passes through the through holes 22, so as to connect the balun 40 and the annular radiating arms 20.
In this embodiment, through holes 22 are formed in the corners where the four annular radiating arms 20 are close to each other, two end portions 51 penetrating through the first dielectric substrate 10 and the through holes 22 are disposed on each second dielectric substrate 50, and the balun 40 extends to the end portions 51, so that the balun 40 and the four annular radiating arms 20 are connected and fed. Meanwhile, the end part 51 penetrates out of the first dielectric substrate 10, so that the connection stability of the first dielectric substrate 10 and the second dielectric substrate 50 can be further enhanced.
Referring to fig. 3, optionally, the extension portion 30 includes two branches 31, and the extending directions of the two branches 31 in the blank region 21 are perpendicular to each other (may not be equal).
In this embodiment, the branches 31 extend along the extending direction of the annular radiating arm 20 to form a good impedance adjustment for the radiating element 100, and since the annular radiating arm 20 extends from the connection point with the balun 40 to two mutually perpendicular directions, the extending directions of the two branches 31 are also mutually perpendicular.
And further, the distance between the branch 31 and the adjacent annular radiation arm 20 may be equal or unequal. It can be understood that the length, width and the distance of the branches 31 can be adjusted to adjust the impedance characteristic of the radiation unit 100; the extension portion 30 may be provided in other shapes, for example, the extension portion 30 may be a unitary rectangle, square, circle or irregular pattern, or the extension portion 30 may include two or more branches 31, so that a plurality of current paths are formed in the blank region 21 of the annular radiation arm 20, thereby achieving the technical effect of impedance matching.
Referring to fig. 3, optionally, a gap 32 is formed between the roots of the two branches 31.
In this embodiment, a gap 32 is formed between the roots of the two branches 31, the gap 32 is used to adjust the standing wave, that is, the return loss, of the radiation unit 100, and the impedance characteristic of the radiation unit 100 can be further adjusted through the analysis, so as to increase the adjustment manner of the impedance characteristic of the radiation unit 100. It is understood that the gap 32 may not be formed between the roots of the two branches 31, and the impedance matching characteristic of the radiation unit 100 may be adjusted only by the branches 31.
Referring to fig. 4, in order to achieve the above object, the present invention further provides a dipole antenna 200, including at least one radiation unit 100 as described above, where the dipole antenna 200 further includes a reflection plate 101, and the radiation unit 100 is disposed on the reflection plate 101.
In this embodiment, the dipole antenna 200 may be a 5G directional antenna, and a plurality of the radiation units 100 may be disposed on the reflection plate 101 to improve the gain of the 5G antenna.
The above is only the preferred embodiment of the present invention, and not the scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings or the direct or indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims (9)
1. A radiating element, characterized in that it comprises:
a first dielectric substrate;
at least two annular radiation arms which are arranged on any surface of the first medium substrate in pairs;
the extension part is formed by extending from the annular radiation arm to the inside of the annular radiation arm;
the balun is positioned on the side, facing away from the annular radiation arm, of the first dielectric substrate, and is connected to a feed source and connected to the annular radiation arm through the first dielectric substrate.
2. The radiating element of claim 1, wherein the radiating element comprises four annular radiating arms, and the four annular radiating arms are arranged on two diagonals of the first dielectric substrate in two pairs.
3. The radiating element according to claim 2, wherein the radiating element further comprises two second dielectric substrates, the two second dielectric substrates are arranged in a crossed and vertical manner, one end of the second dielectric substrate, which is close to the first dielectric substrate, is arranged in the first dielectric substrate, and the balun is arranged on the second dielectric substrate to realize connection with the annular radiating arm.
4. The radiating element according to claim 3, wherein through holes are formed in corners of the four annular radiating arms close to each other, and one end of the second dielectric substrate close to the first dielectric substrate penetrates through the through holes to realize connection between the balun and the annular radiating arms.
5. The radiating element of claim 3, wherein the extension comprises two branches, the two branches extending in a direction perpendicular to each other within the annular radiating arm.
6. The radiating element of claim 5, wherein a gap is formed between the roots of two of the branches.
7. The radiating element of claim 3, wherein the radiating element has a height of less than 0.15 center frequency wavelengths when the second dielectric substrate is vertically positioned.
8. The radiating element of any one of claims 1-7, wherein the operating frequency band of the radiating element is between 2.4GHz and 4.2 GHz.
9. A dipole antenna comprising at least one radiating element as claimed in any one of claims 1 to 8, said dipole antenna further comprising a reflector plate, said radiating element being disposed on said reflector plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922009634.4U CN210576447U (en) | 2019-11-18 | 2019-11-18 | Radiating element and dipole antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922009634.4U CN210576447U (en) | 2019-11-18 | 2019-11-18 | Radiating element and dipole antenna |
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| CN210576447U true CN210576447U (en) | 2020-05-19 |
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| CN201922009634.4U Active CN210576447U (en) | 2019-11-18 | 2019-11-18 | Radiating element and dipole antenna |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112803156A (en) * | 2020-12-28 | 2021-05-14 | 上海安费诺永亿通讯电子有限公司 | Broadband and low-profile crossed dual-polarized dipole antenna and communication terminal |
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2019
- 2019-11-18 CN CN201922009634.4U patent/CN210576447U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112803156A (en) * | 2020-12-28 | 2021-05-14 | 上海安费诺永亿通讯电子有限公司 | Broadband and low-profile crossed dual-polarized dipole antenna and communication terminal |
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