CN213753049U - Antenna and train with same - Google Patents
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- CN213753049U CN213753049U CN202022187188.9U CN202022187188U CN213753049U CN 213753049 U CN213753049 U CN 213753049U CN 202022187188 U CN202022187188 U CN 202022187188U CN 213753049 U CN213753049 U CN 213753049U
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Abstract
The utility model provides an antenna and have its train, this antenna includes: the medium substrate, the radiating element and with radiating element cooperation work's feed unit and ground element, wherein, the radiating element includes the first radiating element that operating frequency range is different, the second radiating element, third radiating element and fourth radiating element, first radiating element, second radiating element and third radiating element set up the top surface at the medium substrate, the fourth radiating element sets up the bottom surface at the medium substrate, first radiating element includes first branch and second branch, the second radiating element includes the third branch, the fourth branch, the fifth branch and the sixth branch, the third radiating element includes the seventh branch, the eighth branch, the ninth branch and the tenth branch, the fourth radiating element includes the eleventh branch and the twelfth branch. The utility model provides an antenna has not only realized the cover of a plurality of frequency channels, has realized the omnidirectional radiation simultaneously.
Description
Technical Field
The utility model belongs to the technical field of communication, especially, relate to an antenna and have its train.
Background
An antenna is a transducer that converts a guided wave propagating on a transmission line into an electromagnetic wave propagating in an unbounded medium (usually free space), or vice versa. In recent years, with the rapid development of 5G communication technology, higher requirements are also put on the design of antennas, such as multi-band and omnidirectional radiation.
SUMMERY OF THE UTILITY MODEL
The present invention has been made in view of the above problems. The utility model provides an antenna and have its train in order to solve one of above-mentioned problems at least.
According to the utility model discloses a first aspect provides an antenna, include: the antenna comprises a dielectric substrate, a radiation unit, a feed unit and a grounding unit, wherein the feed unit and the grounding unit are matched with the radiation unit;
the radiation unit comprises a first radiation unit, a second radiation unit, a third radiation unit and a fourth radiation unit, the first radiation unit, the second radiation unit and the third radiation unit are different in working frequency band, the first radiation unit, the second radiation unit and the third radiation unit are all arranged on the top surface of the dielectric substrate, and the fourth radiation unit is arranged on the bottom surface of the dielectric substrate;
the first radiating element comprises a first branch and a second branch symmetrically arranged about a transverse axis;
the second radiating element comprises a third branch and a fourth branch symmetrically arranged about the transverse axis, and a fifth branch and a sixth branch symmetrically arranged about the transverse axis, the third branch and the fifth branch being located on the left and right sides of the first branch, and the fourth branch and the sixth branch being located on the left and right sides of the second branch;
the third radiating element comprises a seventh branch and an eighth branch symmetrically arranged about the transverse axis, a ninth branch and a tenth branch symmetrically arranged about the transverse axis, the seventh branch being located on the left side of the third branch, the eighth branch being located on the left side of the fourth branch, the ninth branch being located on the right side of the fifth branch, and the tenth branch being located on the right side of the sixth branch;
the fourth radiation unit includes eleventh and twelfth branches symmetrically disposed about the lateral axis.
In addition, the antenna of the present invention may further have the following additional technical features:
in some embodiments of the present invention, the length of the first branch and the length of the second branch are one fourth of the first frequency wavelength, the length of the third branch, the length of the fourth branch, the length of the fifth branch and the length of the sixth branch are one fourth of the second frequency wavelength, the length of the seventh branch, the length of the eighth branch, the length of the ninth branch and the length of the tenth branch are one fourth of the third frequency wavelength, the first frequency is any frequency in the first radiating element working frequency band, the second frequency is any frequency in the second radiating element working frequency band, the third frequency is any frequency in the third radiating element working frequency band, and the first frequency is less than the second frequency, the second frequency is less than the third frequency.
In some embodiments of the present invention, the third branch and the fifth branch are symmetrically disposed about a longitudinal axis, the fourth branch and the sixth branch are symmetrically disposed about the longitudinal axis, the seventh branch and the ninth branch are symmetrically disposed about the longitudinal axis, and the eighth branch and the tenth branch are symmetrically disposed about the longitudinal axis.
In some embodiments of the present invention, the third branch includes a first branch, a second branch and a third branch that are connected in sequence, the fourth branch includes a fourth branch, a fifth branch and a sixth branch that are connected in sequence, the fifth branch includes a seventh branch, an eighth branch and a ninth branch that are connected in sequence, the sixth branch includes a tenth branch, an eleventh branch and a twelfth branch that are connected in sequence, wherein the width of the second branch is less than the width of the first branch or the third branch, the width of the fifth branch is less than the width of the fourth branch or the sixth branch, the width of the eighth branch is less than the width of the seventh branch or the ninth branch, and the width of the eleventh branch is less than the width of the tenth branch or the twelfth branch.
In some embodiments of the present invention, the eleventh branch includes a thirteenth branch, a fourteenth branch and a fifteenth branch that are connected in sequence, and the twelfth branch includes a sixteenth branch, a seventeenth branch and an eighteenth branch that are connected in sequence.
In some embodiments of the present invention, the length of the thirteenth branch, the fifteenth branch, the sixteenth branch and the eighteenth branch is one fourth of the fourth frequency wavelength, the fourth frequency is any frequency in the working frequency band of the fourth radiation unit, and the fourth frequency is greater than the third frequency.
In some embodiments of the present invention, the fourteenth branch is respectively overlapped with the second branch and the eighth branch along the vertical projection portion, and the seventeenth branch is respectively overlapped with the fifth branch and the eleventh branch along the vertical projection portion.
In some embodiments of the present invention, the thirteenth branch is located on one side of the seventh branch away from the longitudinal axis, the fifteenth branch is located on one side of the ninth branch away from the longitudinal axis, the sixteenth branch is located on one side of the eighth branch away from the longitudinal axis, and the eighteenth branch is located on one side of the tenth branch away from the longitudinal axis.
In some embodiments of the present invention, the thirteenth and fifteenth branches are symmetrically disposed about the longitudinal axis, and the sixteenth and eighteenth branches are symmetrically disposed about the longitudinal axis.
The utility model provides an antenna, through setting up first radiating element, the second radiating element, third radiating element and fourth radiating element, the cover of a plurality of frequency channels has been realized, simultaneously because of first radiating element includes first branch and the second branch about horizontal axis symmetry, the second radiating element includes third branch and fourth branch about horizontal axis symmetry, fifth branch and sixth branch about horizontal axis symmetry, the third radiating element includes seventh branch and eighth branch about horizontal axis symmetry, ninth branch and tenth branch about horizontal axis symmetry, the fourth radiating element includes eleventh branch and twelfth branch about horizontal axis symmetry, omnidirectional radiation has been realized.
According to a second aspect of the present invention, there is provided a train comprising an antenna as described above.
Since the antenna has the technical effect, the train also has the same technical effect, and the technical effect is not described in detail herein.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a schematic structural diagram of an antenna according to an embodiment of the present invention;
fig. 2 is a schematic top view of an antenna according to an embodiment of the present invention;
fig. 3 is a schematic bottom structure diagram of an antenna according to an embodiment of the present invention;
fig. 4 is a schematic top view of an antenna according to another embodiment of the present invention;
fig. 5 is a radiation pattern of an antenna according to an embodiment of the present invention when operating at 1.805 GHz;
fig. 6 is a radiation pattern of an antenna according to an embodiment of the present invention operating at 2.484 GHz;
fig. 7 is a radiation pattern of an antenna according to an embodiment of the present invention operating at 3.5 GHz;
fig. 8 is a radiation pattern of an antenna according to an embodiment of the present invention operating at 5.2 GHz;
fig. 9 is a radiation pattern of an antenna according to an embodiment of the present invention operating at 5.8 GHz;
fig. 10 is a schematic diagram of a train according to an embodiment of the present invention.
Reference numerals:
an antenna 100,
A dielectric substrate 1,
A first branch 21, a second branch 22, a third branch 23, a first branch 231, a second branch 232, a third branch 233, a fourth branch 24, a fourth branch 241, a fifth branch 242, a sixth branch 243, a fifth branch 25, a seventh branch 251, an eighth branch 252, a ninth branch 253, a sixth branch 26, a tenth branch 261, an eleventh branch 262, a twelfth branch 263, a seventh branch 27, an eighth branch 28, a ninth branch 29, a tenth branch 30, an eleventh branch 31, a thirteenth branch 311, a fourteenth branch 312, a fifteenth branch 313, a twelfth branch 32, a sixteenth branch 321, a seventeenth branch 322, an eighteenth branch 323,
A power feeding unit 4,
A grounding unit 5,
A train 1000.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly 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 the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Fig. 1 is a schematic diagram illustrating an antenna structure according to an exemplary embodiment. Referring to fig. 1, the antenna 100 includes: the antenna comprises a dielectric substrate 1, a radiating element, a feeding element 4 and a grounding element 5 which are matched with the radiating element.
Wherein, the radiation unit comprises a first radiation unit, a second radiation unit, a third radiation unit and a fourth radiation unit with different working frequency bands, wherein, the first radiation unit, the second radiation unit and the third radiation unit are all arranged on the top surface of the medium substrate 1, the fourth radiation unit is arranged on the bottom surface of the medium substrate 1, the first radiation unit comprises a first branch 21 and a second branch 22 which are symmetrically arranged about the transverse axis, the second radiation unit comprises a third branch 23 and a fourth branch 24 which are symmetrically arranged about the transverse axis, a fifth branch 25 and a sixth branch 26 which are symmetrically arranged about the transverse axis, the third branch 23 and the fifth branch 25 are arranged on the left and right sides of the first branch 21, the fourth branch 24 and the sixth branch 26 are arranged on the left and right sides of the second branch 22, the third radiation unit comprises a seventh branch 27 and an eighth branch 28 which are symmetrically arranged about the transverse axis, ninth branch 29 and tenth branch 30 symmetrically arranged about the transverse axis, seventh branch 27 on the left of third branch 23, eighth branch 28 on the left of fourth branch 24, ninth branch 29 on the right of fifth branch 25, tenth branch 30 on the right of sixth branch 26, and fourth radiation unit comprising eleventh branch 31 and twelfth branch 32 symmetrically arranged about the transverse axis.
The utility model provides an antenna, through setting up first radiating element, the second radiating element, third radiating element and fourth radiating element, the cover of a plurality of frequency channels has been realized, simultaneously because first radiating element includes first branch 21 and second branch 22 about horizontal axis symmetry, the second radiating element includes third branch 23 and fourth branch 24 about horizontal axis symmetry, fifth branch 25 and sixth branch 26 about horizontal axis symmetry, the third radiating element includes seventh branch 27 and eighth branch 28 about horizontal axis symmetry, ninth branch 29 and tenth branch 30 about horizontal axis symmetry, the fourth radiating element includes eleventh branch 31 and twelfth branch 32 about horizontal axis symmetry, omnidirectional radiation has been realized.
Specifically, in the embodiment of the present invention, the first radiation unit has a working frequency band of 1.785-1.805GHz, the second radiation unit has a working frequency band of 2.4-2.484 GHz, the third radiation unit has a working frequency band of 3.4-3.6 GHz, the fourth radiation unit has a working frequency band of 5.725-5.85 GHz, and the third harmonic of the first radiation unit has a working frequency band of 5.15-5.35 GHz, so that the antenna 100 can receive or transmit electromagnetic wave signals with 5 frequency bands.
In some embodiments of the present invention, as shown in fig. 1-3, the feeding unit 4 and the grounding unit 5 are both disposed on the top surface of the dielectric substrate 1, and may be located between the first branch 21 and the second branch 22. Thus, the first branch 21 and the second branch 22 constitute a dipole, the third branch 23 and the fourth branch 24 constitute a dipole, the fifth branch 25 and the sixth branch 26 constitute a dipole, the seventh branch 27 and the eighth branch 28 constitute a dipole, the ninth branch 29 and the tenth branch 30 constitute a dipole, the thirteenth branch 311 of the eleventh branch 31 and the sixteenth branch 321 of the twelfth branch 32 constitute a dipole, and the fifteenth branch 313 of the eleventh branch 31 and the eighteenth branch 323 of the twelfth branch 32 constitute a dipole. The design is such that antenna 100 realizes omnidirectional radiation in 5 frequency bands.
The feeding unit 4 is connected with the first radiating unit, the second radiating unit and the third radiating unit respectively, the grounding unit 5 is connected with the first radiating unit, the second radiating unit and the third radiating unit respectively, so that the first radiating unit, the second radiating unit and the third radiating unit are directly fed, and the fourth radiating unit is coupled with electromagnetic waves radiated by the first radiating unit, the second radiating unit and the third radiating unit, so that coupling feeding of the fourth radiating unit is realized, and space and cost are saved.
In addition, it should be noted that, in the antenna 100, the arrangement of the feeding unit 4 and the grounding unit 5 may be other arrangements (for example, the positions of the feeding unit 4 and the grounding unit 5 are interchanged) besides the arrangement shown in fig. 1, and therefore, the present invention is not limited in this respect, and a user may design the antenna according to the performance requirement of the antenna 100.
In other embodiments of the present invention, the feeding unit 4 may also be connected to any two of the first radiating element, the second radiating element and the third radiating element (not shown in the drawings), for example, the feeding unit 4 is connected to the first radiating element and the second radiating element, such that the first radiating element and the second radiating element are directly fed, the third radiating element is coupled to the electromagnetic wave radiated by the first radiating element and the second radiating element, thereby implementing the coupling feeding of the third radiating element, and the fourth radiating element is coupled to the electromagnetic wave radiated by the first radiating element and the second radiating element, thereby implementing the coupling feeding of the fourth radiating element.
In some embodiments of the present invention, the dielectric substrate 1 may be an FR4 substrate, and the thickness thereof may be 0.762 mm. This not only effectively reduces the cost of the antenna 100, but also improves the environmental suitability of the antenna 100.
In some embodiments of the present invention, the lengths of the first branch 21 and the second branch 22 are one fourth of the first frequency wavelength, the lengths of the third branch 23, the fourth branch 24, the fifth branch 25 and the sixth branch 26 are one fourth of the second frequency wavelength, the lengths of the seventh branch 27, the eighth branch 28, the ninth branch 29 and the tenth branch 30 are one fourth of the third frequency wavelength, the first frequency is any frequency in the first radiation unit working frequency range, the second frequency is any frequency in the second radiation unit working frequency range, the third frequency is any frequency in the third radiation unit working frequency range, and the first frequency is less than the second frequency, and the second frequency is less than the third frequency. By the design, the conversion efficiency of receiving and sending signals by the first radiating unit, the second radiating unit and the third radiating unit is improved.
It is noted that here the lengths of the first branch 21, the second branch 22, the third branch 23, the fourth branch 24, the fifth branch 25, the sixth branch 26, the seventh branch 27, the eighth branch 28, the ninth branch 29 and the tenth branch 30 all refer to the dimension in the longitudinal direction.
In some embodiments of the invention, the third branch 23 and the fifth branch 25 are symmetrically arranged about the longitudinal axis, the fourth branch 24 and the sixth branch 26 are symmetrically arranged about the longitudinal axis, the seventh branch 27 and the ninth branch 29 are symmetrically arranged about the longitudinal axis, and the eighth branch 28 and the tenth branch 30 are symmetrically arranged about the longitudinal axis. By the design, the risk of distortion of radiation of the second radiation unit and the third radiation unit is effectively reduced, and the performance of the antenna is improved.
It should be noted that the longitudinal axis and the transverse axis are perpendicular, and the positions of the longitudinal axis and the transverse axis on the dielectric substrate 1 may be shown in fig. 4, in addition to fig. 2, which is not limited herein.
In some embodiments of the present invention, the first branch 21, the second branch 22, the seventh branch 27, the eighth branch 28, the ninth branch 29 and the tenth branch 30 are all elongated, and the third branch 23, the fourth branch 24, the fifth branch 25 and the sixth branch 26 are each composed of 3 elongated branches. By the design of the strip shape, the radiation range of the antenna 100 can be increased, and the performance of the antenna 100 can be further improved.
It should be noted that the user can design the widths of the first branch 21, the second branch 22, the third branch 23, the fourth branch 24, the fifth branch 25, the sixth branch 26, the seventh branch 27, the eighth branch 28, the ninth branch 29 and the tenth branch 30 according to the performance requirement of the antenna 100, which is not limited herein, and the widths refer to the dimension along the transverse direction.
Specifically, in the embodiment of the present invention, the third branch 23 includes a first branch 231, a second branch 232, and a third branch 233 that are connected in sequence, the fourth branch 24 includes a fourth branch 241, a fifth branch 242, and a sixth branch 243 that are connected in sequence, the fifth branch 25 includes a seventh branch 251, an eighth branch 252, and a ninth branch 253 that are connected in sequence, the sixth branch 26 includes a tenth branch 261, an eleventh branch 262, and a twelfth branch 263 that are connected in sequence, wherein the width of the second branch 232 is smaller than the width of the first branch 231 or the third branch 233, the width of the fifth branch 242 is smaller than the width of the fourth branch 241 or the sixth branch 243, the width of the eighth branch 252 is smaller than the width of the seventh branch 253 or the ninth branch 253, and the width of the eleventh branch 262 is smaller than the width of the tenth branch 261 or the twelfth branch 263. By the design, the second radiating unit has good impedance matching characteristics, and power transmission is improved.
In some embodiments of the present invention, the eleventh branch 31 includes a thirteenth branch 311, a fourteenth branch 312, and a fifteenth branch 313 that are sequentially connected, and the twelfth branch 32 includes a sixteenth branch 321, a seventeenth branch 322, and an eighteenth branch 323 that are sequentially connected, wherein the thirteenth branch 311, the fourteenth branch 312, and the fifteenth branch 313 are transversely arranged, and the sixteenth branch 321, the seventeenth branch 322, and the eighteenth branch 323 are also transversely arranged. By the design, the coupling between the fourth radiation unit and the first radiation unit, the coupling between the second radiation unit and the coupling between the fourth radiation unit and the third radiation unit are facilitated.
In some embodiments of the present invention, the length of the thirteenth branch 311, the fifteenth branch 313, the sixteenth branch 321, and the eighteenth branch 323 is one fourth of the fourth frequency wavelength, the fourth frequency is any frequency within the working frequency band of the fourth radiation unit, and the fourth frequency is greater than the third frequency. By the design, the conversion efficiency of the fourth radiation unit for receiving and transmitting signals is improved.
It should be noted that the lengths of the thirteenth branch 311, the fifteenth branch 313, the sixteenth branch 321 and the eighteenth branch 323 refer to the dimension along the longitudinal direction.
In some embodiments of the present invention, the fourteenth branch 312 coincides with the vertical projection of the second branch 232 and the eighth branch 252, respectively, and the seventeenth branch 322 coincides with the vertical projection of the fifth branch 242 and the eleventh branch 262, respectively. Compared with the coupling among the fourth radiation unit, the first radiation unit and the third radiation unit, the coupling degree between the second radiation unit and the fourth radiation unit can be reduced, and therefore the working frequency of the fourth radiation unit is maintained within the working frequency band of the fourth radiation unit.
It should be noted that the vertical direction is perpendicular to the lateral direction and the longitudinal direction, respectively.
In some embodiments of the present invention, the thirteenth branch 311 is located on the side of the seventh branch 27 away from the longitudinal axis, the fifteenth branch 313 is located on the side of the ninth branch 29 away from the longitudinal axis, the sixteenth branch 321 is located on the side of the eighth branch 28 away from the longitudinal axis, and the eighteenth branch 323 is located on the side of the tenth branch 30 away from the longitudinal axis. In other words, thirteenth branch 311, fifteenth branch 313, sixteenth branch 321, and eighteenth branch 323 are located outside of the third radiation unit, which is more favorable for realizing omnidirectional radiation of antenna 100.
In some embodiments of the present disclosure, thirteenth branch 311 and fifteenth branch 313 are symmetrically disposed about the longitudinal axis, and sixteenth branch 321 and eighteenth branch 323 are symmetrically disposed about the longitudinal axis. By the design, the risk of distortion of radiation of the fourth radiation unit is effectively reduced, and the performance of the antenna is improved.
Fig. 5-9 are schematic diagrams of far-field two-dimensional simulation results of the antenna performance of the present invention.
Wherein, fig. 5 is the radiation pattern when the antenna of an embodiment of the utility model works at 1.805GHz according to the utility model discloses a radiation pattern when the antenna of an embodiment works at 2.484GHz, fig. 7 is the radiation pattern when the antenna of an embodiment of the utility model works at 3.5GHz, fig. 8 is the radiation pattern when the antenna of an embodiment of the utility model works at 5.2GHz, fig. 9 is the radiation pattern when the antenna of an embodiment of the utility model works at 5.8GHz, in the above-mentioned figure, the abscissa represents the radiation angle, the ordinate represents the gain, from which can be seen that antenna 100 has high gain, the characteristic of omnidirectional radiation.
The utility model also discloses a train 1000, as shown in fig. 10, this train 1000 includes antenna 100, and this antenna 100 can be located the position of train roof, and here is not restricted.
It should be noted that the specific type of the train 1000 according to the embodiment of the present invention is not limited, and may be, for example, a light rail, a subway, a train, a high-speed rail, a motor train unit, and the like.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (10)
1. An antenna, comprising: the antenna comprises a dielectric substrate, a radiation unit, a feed unit and a grounding unit, wherein the feed unit and the grounding unit are matched with the radiation unit;
the radiation unit comprises a first radiation unit, a second radiation unit, a third radiation unit and a fourth radiation unit, the first radiation unit, the second radiation unit and the third radiation unit are different in working frequency band, the first radiation unit, the second radiation unit and the third radiation unit are all arranged on the top surface of the dielectric substrate, and the fourth radiation unit is arranged on the bottom surface of the dielectric substrate;
the first radiating element comprises a first branch and a second branch symmetrically arranged about a transverse axis;
the second radiating element comprises a third branch and a fourth branch symmetrically arranged about the transverse axis, and a fifth branch and a sixth branch symmetrically arranged about the transverse axis, the third branch and the fifth branch being located on the left and right sides of the first branch, and the fourth branch and the sixth branch being located on the left and right sides of the second branch;
the third radiating element comprises a seventh branch and an eighth branch symmetrically arranged about the transverse axis, a ninth branch and a tenth branch symmetrically arranged about the transverse axis, the seventh branch being located on the left side of the third branch, the eighth branch being located on the left side of the fourth branch, the ninth branch being located on the right side of the fifth branch, and the tenth branch being located on the right side of the sixth branch;
the fourth radiation unit includes eleventh and twelfth branches symmetrically disposed about the lateral axis.
2. The antenna of claim 1, wherein the lengths of the first branch and the second branch are all one fourth of a first frequency wavelength, the lengths of the third branch, the fourth branch, the fifth branch and the sixth branch are all one fourth of a second frequency wavelength, the lengths of the seventh branch, the eighth branch, the ninth branch and the tenth branch are all one fourth of a third frequency wavelength, the first frequency is any frequency in a first radiation unit working frequency band, the second frequency is any frequency in a second radiation unit working frequency band, the third frequency is any frequency in a third radiation unit working frequency band, the first frequency is smaller than the second frequency, and the second frequency is smaller than the third frequency.
3. The antenna of claim 1 or 2, wherein the third branch and the fifth branch are symmetrically disposed about a longitudinal axis, the fourth branch and the sixth branch are symmetrically disposed about the longitudinal axis, the seventh branch and the ninth branch are symmetrically disposed about the longitudinal axis, and the eighth branch and the tenth branch are symmetrically disposed about the longitudinal axis.
4. The antenna of claim 2, wherein the third branch comprises a first branch, a second branch and a third branch which are connected in sequence, the fourth branch comprises a fourth branch, a fifth branch and a sixth branch which are connected in sequence, the fifth branch comprises a seventh branch, an eighth branch and a ninth branch which are connected in sequence, the sixth branch comprises a tenth branch, an eleventh branch and a twelfth branch which are connected in sequence, wherein the width of the second branch is smaller than that of the first branch or the third branch, the width of the fifth branch is smaller than that of the fourth branch or the sixth branch, the width of the eighth branch is smaller than that of the seventh branch or the ninth branch, and the width of the eleventh branch is smaller than that of the tenth branch or the twelfth branch.
5. The antenna of claim 4, wherein the eleventh branch comprises a thirteenth branch, a fourteenth branch and a fifteenth branch which are connected in sequence, and the twelfth branch comprises a sixteenth branch, a seventeenth branch and an eighteenth branch which are connected in sequence.
6. The antenna of claim 5, wherein the thirteenth branch, the fifteenth branch, the sixteenth branch, and the eighteenth branch are all one quarter of a wavelength of a fourth frequency, the fourth frequency is any frequency within an operating frequency band of a fourth radiating unit, and the fourth frequency is greater than the third frequency.
7. The antenna of claim 5, wherein the fourteenth branch coincides with a vertical projection of the second branch and the eighth branch, respectively, and the seventeenth branch coincides with a vertical projection of the fifth branch and the eleventh branch, respectively.
8. The antenna of claim 5, wherein the thirteenth branch is located on a side of the seventh branch away from the longitudinal axis, the fifteenth branch is located on a side of the ninth branch away from the longitudinal axis, the sixteenth branch is located on a side of the eighth branch away from the longitudinal axis, and the eighteenth branch is located on a side of the tenth branch away from the longitudinal axis.
9. The antenna of claim 8, wherein the thirteenth and fifteenth branches are symmetrically disposed about the longitudinal axis, and wherein the sixteenth and eighteenth branches are symmetrically disposed about the longitudinal axis.
10. A train comprising an antenna according to any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022187188.9U CN213753049U (en) | 2020-09-29 | 2020-09-29 | Antenna and train with same |
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| CN202022187188.9U CN213753049U (en) | 2020-09-29 | 2020-09-29 | Antenna and train with same |
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| CN213753049U true CN213753049U (en) | 2021-07-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114374088A (en) * | 2022-01-21 | 2022-04-19 | 西安交通大学 | Plane ultra-wideband ground penetrating radar antenna |
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2020
- 2020-09-29 CN CN202022187188.9U patent/CN213753049U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114374088A (en) * | 2022-01-21 | 2022-04-19 | 西安交通大学 | Plane ultra-wideband ground penetrating radar antenna |
| CN114374088B (en) * | 2022-01-21 | 2023-09-22 | 西安交通大学 | Planar ultra-wideband ground penetrating radar antenna |
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