CN219917579U - Omnidirectional antenna - Google Patents
Omnidirectional antenna Download PDFInfo
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- CN219917579U CN219917579U CN202321195921.9U CN202321195921U CN219917579U CN 219917579 U CN219917579 U CN 219917579U CN 202321195921 U CN202321195921 U CN 202321195921U CN 219917579 U CN219917579 U CN 219917579U
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- 230000005855 radiation Effects 0.000 claims abstract description 33
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- 238000010586 diagram Methods 0.000 description 5
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- 238000012986 modification Methods 0.000 description 1
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Abstract
The utility model provides an omnidirectional antenna, which comprises a non-radiation grounding element, a radiation antenna element and a radiation grounding element, wherein one end of the radiation antenna element is connected with the radiation grounding element, and the other end of the radiation antenna element is connected with the non-radiation grounding element; the radiating antenna element comprises a plurality of radiating units and connecting units used for connecting the radiating units in series, wherein each radiating unit comprises a first inner conductor and two first outer conductors symmetrically arranged outside the first inner conductor, and the first inner conductor in each radiating unit is connected with the first outer conductor of the adjacent radiating unit through the connecting unit. The omnidirectional antenna is a bar-shaped omnidirectional high-gain antenna with simple structure and outstanding performance, and the working gain of the antenna can be improved by adopting a mode of metal straight line unit array, and the maximum realization gain of the antenna can reach 5.5dBi; the working frequency band of the antenna is 2.39GHz-2.49GHz.
Description
Technical Field
The utility model belongs to the technical field of wireless communication antennas, and particularly relates to an omnidirectional antenna.
Background
With the continuous innovation of modern wireless communication, radar and electronic systems, the electromagnetic environment in which the terminal is located is increasingly complex, and under various complex terrains and severe weather, higher requirements are also put on the performance of the antenna. The omni-directional antenna has the capability of transmitting and receiving wireless signals in all directions of a horizontal plane, is particularly suitable for wireless communication indoors and outdoors, and is widely used in civil and commercial fields. The high-quality communication of the equipment is ensured, the coverage of the equipment to a service area is ensured, the gain of the antenna is as high as possible, the gain of the antenna is improved under the same condition, and the propagation distance of electromagnetic energy can be increased. Therefore, research on an omnidirectional high-gain antenna with outstanding performance is of great importance in the field of modern communication and information systems.
Disclosure of Invention
The utility model aims to provide a rod-shaped high-gain omnidirectional antenna with simple structure and outstanding performance.
The utility model is realized in that the omnidirectional antenna comprises a non-radiation grounding element, a radiation antenna element and a radiation grounding element, wherein one end of the radiation antenna element is connected with the radiation grounding element, and the other end of the radiation antenna element is connected with the non-radiation grounding element;
the radiating antenna element comprises a plurality of radiating units and connecting units used for connecting the radiating units in series, wherein each radiating unit comprises a first inner conductor and two first outer conductors symmetrically arranged outside the first inner conductor, and the first inner conductor in each radiating unit is connected with the first outer conductor of the adjacent radiating unit through the connecting unit.
Preferably, the first inner conductor and the first outer conductor in each radiating element are parallel to each other, the first inner conductor of each radiating element is coaxial with the first inner conductor of an adjacent radiating element, and the surface formed by the first inner conductor and the two first outer conductors of each radiating element is perpendicular to the surface formed by the first inner conductor and the two first outer conductors of the adjacent radiating element.
Preferably, the first inner conductor and the first outer conductor of each radiating element are parallel to each other, the first inner conductor of each radiating element is coaxial with the first inner conductor of an adjacent radiating element, and the two first outer conductors of each radiating element are coplanar with the two first outer conductors of an adjacent radiating element.
Preferably, the connecting unit comprises two first V-shaped connecting frames, the two first V-shaped connecting frames are opposite in opening direction and perpendicular to each other, the middle bottom of each first V-shaped connecting frame is connected with the first inner conductor, and two extending sides of each first V-shaped connecting frame are respectively connected with two first outer conductors.
Preferably, the connecting unit comprises two right-angle arch connecting frames, the two right-angle arch connecting frames are opposite in setting direction and perpendicular to each other, the middle part of a cross beam of the right-angle arch connecting frame is connected with the first inner conductor, and two extending longitudinal beams on two sides of the right-angle arch connecting frame are respectively connected with the two first outer conductors.
Preferably, the connecting unit comprises a second V-shaped connecting frame and an S-shaped connecting frame, and the S-shaped connecting frame comprises a first transverse connecting rod, a second transverse connecting rod, a third transverse connecting rod, a first inclined connecting rod and a second inclined connecting rod;
one end of the first inner conductor is connected with the middle bottom of a second V-shaped connecting frame, and the other end of the second V-shaped connecting frame is connected with two first outer conductors of adjacent radiating units;
the middle part of first transverse connection pole is connected to the other end of first inner conductor, the one end of first oblique connecting rod and the one end of second oblique connecting rod are connected respectively at the both ends of first transverse connection pole, one on another adjacent radiating element is connected to the one end of second transverse connection pole first outer conductor, the other end of second transverse connection pole is connected the other end of first oblique connecting rod, another on another adjacent radiating element is connected to the one end of third transverse connection pole first outer conductor, the other end of third transverse connection pole is connected the other end of second oblique connecting rod.
Preferably, the first inner conductor is equal in length to the first outer conductor.
Preferably, the non-radiation grounding element comprises a second inner conductor, a second outer conductor, an insulating medium and a circular substrate, wherein the second inner conductor is fixed at the center of the circular substrate through the insulating medium, the two second outer conductors are symmetrically connected to the periphery of the circular substrate by taking the second inner conductor as a central axis, the second inner conductor is coaxial with the first inner conductor, and the second inner conductor and the second outer conductor are connected with the first outer conductor and the first inner conductor in a staggered manner through the connecting unit.
Preferably, the radiation grounding element comprises a third inner conductor, a third outer conductor and a short-circuit metal rod, the middle part of the short-circuit metal rod is connected with the third inner conductor, two ends of the short-circuit metal rod are respectively connected with the two third outer conductors, the third inner conductor is coaxial with the first inner conductor, and the third inner conductor and the third outer conductor are connected with the first outer conductor and the first inner conductor in a staggered manner through the connecting unit.
Preferably, the second inner conductor, the second outer conductor, the third inner conductor, and the third outer conductor are respectively equal in length.
The utility model has the beneficial effects that:
according to the omnidirectional antenna, the non-radiation grounding unit is used as the feed matching part, the first inner conductors and the first outer conductors in the radiation units are connected in a staggered mode, the first inner conductors and the first outer conductors are all metal straight lines, the first inner conductors and the first outer conductors of each radiation unit are in current phase on the whole structure, and then the effect of improving the antenna gain can be achieved. The omnidirectional antenna is a bar-shaped omnidirectional high-gain antenna with simple structure and outstanding performance, and the working gain of the antenna can be improved by adopting a mode of metal straight line unit array, and the maximum realization gain of the antenna can reach 5.5dBi; the working frequency band of the antenna is 2.39GHz-2.49GHz.
Drawings
Fig. 1 is a schematic diagram of an omni-directional antenna according to a first embodiment of the present utility model;
fig. 2 is a schematic cross-sectional structure diagram of an omni-directional antenna according to a first embodiment of the present utility model;
fig. 3 is an |s diagram of an omni-directional antenna according to an embodiment of the present utility model 11 Graph of I;
fig. 4 is an H-plane pattern at 2.44GHz for an omni-directional antenna according to a first embodiment of the present utility model;
fig. 5 is an E-plane pattern at 2.43GHz for an omni-directional antenna according to a first embodiment of the present utility model;
fig. 6 is a 3D radiation pattern at 2.43GHz for an omni-directional antenna in accordance with a first embodiment of the present utility model;
fig. 7 is a schematic diagram of a partial structure of an omni-directional antenna according to a second embodiment of the present utility model;
fig. 8 is a 3D radiation pattern at 2.43GHz for an omni-directional antenna according to a second embodiment of the present utility model;
fig. 9 is a schematic diagram of a partial structure of an omni-directional antenna according to a third embodiment of the present utility model;
fig. 10 is a 3D radiation pattern at 2.43GHz for an omni-directional antenna according to a third embodiment of the present utility model.
Reference numerals illustrate:
100. a non-radiative ground element; 110. a second inner conductor; 120. a second outer conductor; 130. a circular ring-shaped substrate; 140. an insulating medium;
200. a radiating antenna element; 210. a radiation unit; 211. a first inner conductor; 212. a first outer conductor; 220. a connection unit; 221. a first V-shaped link; 222. a right angle arched connecting frame; 223. a second V-shaped link; 224. an S-shaped connecting frame; 2241. a first transverse connection rod; 2242. a second transverse connecting rod; 2243. a third transverse connecting rod; 2244. a first inclined connecting rod; 2245. a second inclined connecting rod;
300. a radiating ground element; 310. a third inner conductor; 320. a third outer conductor; 330. shorting the metal bars.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", etc., are based on those shown in the drawings, are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or elements referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present utility model; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium, and can be the communication between the two parts. The specific meaning of the terms in the present utility model will be understood by those of ordinary skill in the art in specific detail.
In general, the return loss characteristic |S of an antenna in engineering applications 11 The I general requirement is smaller than-6 dB, which is a normal standard, namely, the rod-shaped omni-directional high-gain antenna can normally work at 2.39GHz-2.49GHz under the condition of meeting the requirement, is horizontal omni-directional radiation, and effectively improves the gain of the antenna and improves the directivity of the antenna.
Example 1
Referring to fig. 1-6, the omni-directional antenna disclosed in the present utility model includes a non-radiating ground element 100, a radiating antenna element 200, and a radiating ground element 300, one end of the radiating antenna element 200 is connected to the radiating ground element 300, and the other end of the radiating antenna element 200 is connected to the non-radiating ground element 100;
the radiating antenna element 200 comprises three radiating elements 210 and four connecting elements 220, the radiating elements 210 comprising a first inner conductor 211 and two first outer conductors 212 symmetrically arranged outside the first inner conductor 211, the first inner conductor 211 in each radiating element 210 being connected to the first outer conductor 212 of an adjacent radiating element 210 by means of the connecting elements 220.
Specifically, the first inner conductor 211 and the first outer conductor 212 in each radiating element 210 are parallel to each other, the first inner conductor 211 of each radiating element 210 is coaxial with the first inner conductor 211 of the adjacent radiating element 210, and the surface formed by the first inner conductor 211 and the two first outer conductors 212 of each radiating element 210 is perpendicular to the surface formed by the first inner conductor 211 and the two first outer conductors 212 of the adjacent radiating element 210. The radiating units 210 adopt a structure rotated by 90 degrees along the axis, and the arrangement of the different-surface structures among the radiating units 210 can enable the antenna to realize 360-degree omnidirectional radiation in the horizontal direction.
In this embodiment, the connection unit 220 includes two first V-shaped connection frames 221, the opening directions of the two first V-shaped connection frames 221 are opposite and perpendicular to each other, the middle bottom of the first V-shaped connection frame 221 is connected to the first inner conductor 211, and two extending sides of the first V-shaped connection frame 221 are respectively connected to the two first outer conductors 212. It will be appreciated that the arrangement of the first V-shaped connector 221 serves primarily to connect the radiating element 210, and the inclination of the inclined connecting rods forming the V-shaped connector is generally set to be greater than 40 degrees or more relative to the horizontal.
In the present embodiment, the non-radiating grounding element 100 includes a second inner conductor 110, a second outer conductor 120, an insulating medium 140 and a circular ring-shaped substrate 130, wherein the second inner conductor 110 is fixed at the center of the circular ring-shaped substrate 130 through the insulating medium 140, the two second outer conductors 120 are symmetrically connected to the periphery of the circular ring-shaped substrate 130 with the second inner conductor 110 as a central axis, the second inner conductor 110 is coaxial with the first inner conductor 211, and the second inner conductor 110 and the second outer conductor 120 are connected with the first outer conductor 212 and the first inner conductor 211 in a staggered manner through the connection unit 220. The second inner conductors 110 are connected to the middle bottom of one first V-shaped connection frame 221 to connect the two first outer conductors 212, and the two second outer conductors 120 are connected to both side extensions of the other first V-shaped connection frame 221 to connect the first inner conductors 211. The annular base plate is connected to two second outer conductors 120 as one electrical connection contact and the second inner conductor 110 as the other electrical connection contact.
In this embodiment, the radiation grounding element 300 includes a third inner conductor 310, a third outer conductor 320 and a shorting metal rod 330, the middle portion of the shorting metal rod 330 is connected to the third inner conductor 310, two ends of the shorting metal rod 330 are respectively connected to two third outer conductors 320, the third inner conductor 310 is coaxial with the first inner conductor 211, and the third inner conductor 310 and the third outer conductor 320 are connected to the first outer conductor 212 and the first inner conductor 211 in a staggered manner through the connection unit 220.
It should be noted that, the first inner conductor 211, the first outer conductor 212, the second inner conductor 110, the second outer conductor 120, the third inner conductor 310 and the third outer conductor 320 of the present utility model are all square straight metal strips, wherein the lengths of the first inner conductor 211 and the first outer conductor 212 are consistent, and the lengths of the first inner conductor 211 and the first outer conductor 212 are 1/2 wavelength by using the center frequency of the antenna operating band as a comparison reference in the wavelength of the free space. The second inner conductor 110, the second outer conductor 120, the third inner conductor 310, and the third outer conductor 320 are each 1/4 wavelength long.
It will be appreciated that adding the radiating element 210 may increase the effect of the antenna gain. The omnidirectional antenna is a bar-shaped omnidirectional high-gain antenna with simple structure and outstanding performance, and the working gain of the antenna can be improved by adopting a mode of metal straight line unit array, and the maximum realization gain of the antenna can reach 5.5dBi; the working frequency band of the antenna is 2.39GHz-2.49GHz, and the omnidirectional antenna can be seen to cover the 2.4GHz WIFI frequency band range as shown in figure 3. The antenna adopts a mode of different surfaces among all metal straight line strip units, realizes 360-degree omnidirectional uniform radiation in the horizontal direction, and has the out-of-roundness of an antenna pattern of 1dB in the working frequency band. As shown in fig. 4, it can be seen that the antenna can achieve the performance of omni-directional coverage in the horizontal plane. The effect of the antenna to achieve high gain can be seen in fig. 5.
Example two
Referring to fig. 7, unlike the first embodiment, the connection unit 220 of the present embodiment includes two right-angle arch-shaped connection frames 222, the two right-angle arch-shaped connection frames 222 are opposite in opening direction and perpendicular to each other, the middle part of the cross beam of the right-angle arch-shaped connection frame 222 is connected with the first inner conductor 211, and two extending stringers of the right-angle arch-shaped connection frame 222 are respectively connected with the two first outer conductors 212. I.e. the connection between the first inner conductor 211 and the first outer conductor 212 is at right angles. As shown in fig. 8, the 3D radiation pattern of the omni-directional antenna according to the second embodiment is different from that of the first embodiment in that the connection is a right angle connection, and the radiation pattern and the out-of-roundness of the structure are inferior to those of the first embodiment.
Example III
With further reference to fig. 9, unlike the first and second embodiments, the first inner conductor 211 and the first outer conductor 212 in each radiating element 210 are parallel to each other, the first inner conductor 211 of each radiating element 210 is coaxial with the first inner conductor 211 of an adjacent radiating element 210, and the two first outer conductors 212 of each radiating element 210 are coplanar with the two first outer conductors 212 of an adjacent radiating element 210.
The radiating elements 210 are all coaxial and have no different surfaces, and based on the design mode of the radiating elements 210, the connecting unit 220 of the omnidirectional antenna comprises a second V-shaped connecting frame 223 and an S-shaped connecting frame 224, and the S-shaped connecting frame 224 comprises a first transverse connecting rod 2241, a second transverse connecting rod 2242, a third transverse connecting rod 2243, a first inclined connecting rod 2244 and a second inclined connecting rod 2245;
one end of the first inner conductor 211 is connected to the middle bottom of the second V-shaped connection frame 223, and the other end of the second V-shaped connection frame 223 is connected to the two first outer conductors 212 of the adjacent radiating units 210;
the other end of the first inner conductor 211 is connected to the middle of the first transverse connecting rod 2241, two ends of the first transverse connecting rod 2241 are respectively connected to one end of the first oblique connecting rod 2244 and one end of the second oblique connecting rod 2245, one end of the second transverse connecting rod 2242 is connected to one first outer conductor 212 on another adjacent radiating element 210, the other end of the second transverse connecting rod 2242 is connected to the other end of the first oblique connecting rod 2244, one end of the third transverse connecting rod 2243 is connected to the other first outer conductor 212 on another adjacent radiating element 210, and the other end of the third transverse connecting rod 2243 is connected to the other end of the second oblique connecting rod 2245.
As shown in fig. 10, the 3D radiation pattern of the omni-directional antenna according to the present embodiment is different from that of the first embodiment in that the units are not rotated 90 degrees along the axis, i.e., the units are coplanar, and the roundness of the third embodiment is not the same as that of the first embodiment.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (10)
1. An omnidirectional antenna, comprising a non-radiating ground element, a radiating antenna element and a radiating ground element, wherein one end of the radiating antenna element is connected with the radiating ground element, and the other end of the radiating antenna element is connected with the non-radiating ground element;
the radiating antenna element comprises a plurality of radiating units and connecting units used for connecting the radiating units in series, wherein each radiating unit comprises a first inner conductor and two first outer conductors symmetrically arranged outside the first inner conductor, and the first inner conductor in each radiating unit is connected with the first outer conductor of the adjacent radiating unit through the connecting unit.
2. The omni-directional antenna according to claim 1, wherein a first inner conductor and a first outer conductor of each radiating element are parallel to each other, the first inner conductor of each radiating element is coaxial with the first inner conductor of an adjacent radiating element, and a surface formed by the first inner conductor and two first outer conductors of each radiating element is perpendicular to a surface formed by the first inner conductor and two first outer conductors of an adjacent radiating element.
3. The omni-directional antenna according to claim 1, wherein a first inner conductor and a first outer conductor in each of the radiating elements are parallel to each other, the first inner conductor of each radiating element being coaxial with the first inner conductor of an adjacent radiating element, and two of the first outer conductors of each radiating element being coplanar with two of the first outer conductors of an adjacent radiating element.
4. The omnidirectional antenna of claim 2, wherein the connection unit comprises two first V-shaped connection frames, the two first V-shaped connection frames are opposite in opening direction and perpendicular to each other, the middle bottom of the first V-shaped connection frame is connected with the first inner conductor, and two side extensions of the first V-shaped connection frame are respectively connected with the two first outer conductors.
5. The omnidirectional antenna of claim 2, wherein the connection unit comprises two right-angle arch-shaped connection frames, the two right-angle arch-shaped connection frames are opposite in opening direction and perpendicular to each other, the middle part of a cross beam of the right-angle arch-shaped connection frame is connected with the first inner conductor, and two extending longitudinal beams of the right-angle arch-shaped connection frame are respectively connected with the two first outer conductors.
6. The omni directional antenna according to claim 3, wherein the connection unit comprises a second V-shaped connection frame and an S-shaped connection frame, the S-shaped connection frame comprising a first transverse connection rod, a second transverse connection rod, a third transverse connection rod, a first angled connection rod, and a second angled connection rod;
one end of the first inner conductor of each radiating element is connected with the middle bottom of a second V-shaped connecting frame, and the other end of the second V-shaped connecting frame is connected with two first outer conductors of adjacent radiating elements;
the other end of the first inner conductor of each radiation unit is connected with the middle part of a first transverse connecting rod, two ends of the first transverse connecting rod are respectively connected with one end of a first inclined connecting rod and one end of a second inclined connecting rod, one end of the second transverse connecting rod is connected with one first outer conductor on another adjacent radiation unit, the other end of the second transverse connecting rod is connected with the other end of the first inclined connecting rod, one end of a third transverse connecting rod is connected with the other first outer conductor on the other adjacent radiation unit, and the other end of the third transverse connecting rod is connected with the other end of the second inclined connecting rod.
7. The omni-directional antenna according to claim 1, wherein the first inner conductor is equal in length to the first outer conductor.
8. The omni-directional antenna according to claim 1, wherein the non-radiating ground element comprises a second inner conductor, a second outer conductor, an insulating medium, and a circular substrate, the second inner conductor is fixed at a central position of the circular substrate through the insulating medium, the two second outer conductors are symmetrically connected to a periphery of the circular substrate with the second inner conductor as a central axis, the second inner conductor is coaxial with the first inner conductor, and the second inner conductor and the second outer conductor are connected with the first outer conductor and the first inner conductor in a staggered manner through the connection unit.
9. The omni-directional antenna according to claim 8, wherein the radiating ground element comprises a third inner conductor, a third outer conductor, and a shorting metal bar, a middle portion of the shorting metal bar is connected to the third inner conductor, two ends of the shorting metal bar are respectively connected to the third outer conductors, the third inner conductor is coaxial with the first inner conductor, and the third inner conductor and the third outer conductor are connected to the first outer conductor and the first inner conductor in a staggered manner through the connection unit.
10. The omni-directional antenna according to claim 9, wherein the second inner conductor, the second outer conductor, the third inner conductor, and the third outer conductor are each equal in length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321195921.9U CN219917579U (en) | 2023-05-16 | 2023-05-16 | Omnidirectional antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321195921.9U CN219917579U (en) | 2023-05-16 | 2023-05-16 | Omnidirectional antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219917579U true CN219917579U (en) | 2023-10-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321195921.9U Active CN219917579U (en) | 2023-05-16 | 2023-05-16 | Omnidirectional antenna |
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| Country | Link |
|---|---|
| CN (1) | CN219917579U (en) |
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2023
- 2023-05-16 CN CN202321195921.9U patent/CN219917579U/en active Active
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