CN214625373U - Low-frequency radiation unit and separable multi-frequency base station antenna - Google Patents
Low-frequency radiation unit and separable multi-frequency base station antenna Download PDFInfo
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Abstract
The utility model provides a low-frequency radiation unit, which comprises a dielectric substrate, a radiator, a feed structure and a side ground structure; the radiator is arranged on the dielectric substrate; the side edge ground structure is fixed on the reflecting plate and is positioned on the side surface of the radiating body; one end of the feed structure is connected with the radiator, and the other end of the feed structure is connected with the side grounding structure. Therefore, the utility model discloses low frequency radiating element can simplify low frequency radiating element's structure, can realize that the antenna size is miniaturized. The utility model also provides a separable multi-frequency base station antenna, which comprises a first reflecting plate, wherein the first reflecting plate is detachably connected with a plurality of low-frequency radiation units and a plurality of high-frequency radiation units; the low-frequency radiation unit can be separated from the first reflecting plate, and then the low-frequency radiation unit is detachably connected to the second reflecting plate, so that the low-frequency radiation unit and the high-frequency radiation unit can respectively and independently work.
Description
Technical Field
The utility model relates to a wireless communication's base station antenna technical field especially relates to a low frequency radiating element and separable multifrequency base station antenna.
Background
With the rapid development of mobile communication technology, the number of 5G base stations is rapidly increasing, and the problem of shortage of site resources is increasingly appearing. For rapid deployment, the 5G site mainly adds a 5G antenna and equipment to the original 4G site resources, so the multi-frequency base station antenna becomes the mainstream. The 4G and 5G fused A + P base station antenna (namely, the active and passive integrated antenna) has more advantages in space size, wind load and management, has a good development prospect, and is a future trend.
The A + P base station antenna is a 4G and 5G integrated antenna and comprises an A (Active) antenna unit and a P (Passive) antenna unit, wherein the A antenna unit is a 5G high-frequency antenna adding device and generally has a frequency band of 2600MHz or 3500 MHz; the P antenna unit is a 4G low frequency antenna plus device, and is generally in the 690-960MHz frequency band. The existing A + P base station antenna is generally in a vertical splicing structure, an A antenna unit is arranged on the upper surface, and a P antenna unit is arranged on the lower surface, and the antenna is usually overlong in size in the form, so that the wind load is overlarge; another implementation is to install the P antenna unit on the reflection plate of the a antenna unit, so that although the antenna length can be reduced, the a + P base station antenna can only work integrally and cannot be separated.
In view of the above, the prior art is obviously inconvenient and disadvantageous in practical use, and needs to be improved.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned drawbacks, the present invention provides a low frequency radiating unit and a separable multi-frequency base station antenna, the low frequency radiating unit of the present invention can simplify the structure of the low frequency radiating unit, and can realize the miniaturization of the antenna size; and, the utility model discloses multifrequency base station antenna can work independently respectively.
In order to achieve the above object, the present invention provides a low frequency radiation unit, which includes a dielectric substrate, a radiator, a feed structure and a side ground structure; the radiator is arranged on the dielectric substrate; the side edge ground structure is fixed on the reflecting plate and is positioned on the side surface of the radiating body; one end of the feed structure is connected with the radiator, and the other end of the feed structure is connected with the side grounding structure.
According to low frequency radiation unit, the irradiator contains the dipole of two sets of orthogonal distributions, is in respectively distribute in medium base plate's the 45 directions and place, two sets of the radiation arm of dipole includes mutually perpendicular's vertical line way and horizontal line.
According to low frequency radiating element, vertical line with the length of horizontal line equals, and length is 0.1 ~ 0.4 wavelength.
According to the low frequency radiating element of the present invention, a multi-segment bent line is disposed between the vertical line and the horizontal line of the radiator to realize a first high frequency filtering branch; the bending line comprises two longitudinal line sections and one transverse line section, the upper ends of the two longitudinal line sections are respectively connected with the transverse line section, and the lower ends of the two longitudinal line sections are respectively connected with the vertical line or the horizontal line; the bending circuit is equivalent to an LC parallel resonance circuit, the bending circuit is equivalent to an inductance structure, and a gap between two longitudinal line sections of the bending circuit is equivalent to a capacitance structure.
According to low frequency radiating element, the width of the circuit of buckling is less than vertical line with the width of horizontal line.
According to the low-frequency radiation unit of the present invention, the dielectric substrate includes a square substrate, and a rectangular arm is respectively extended outwards from the middle of each of the four sides of the square substrate;
the radiating arms of the radiator are printed on the square substrate and the rectangular arms.
According to low frequency radiating element, feed structure include two feeder circuit, every the one end of feeder circuit is connected the irradiator, the other end is connected side ground structure.
According to low frequency radiation unit, feeder circuit includes the segmentation structure of different widths to high low resistance form realizes second high frequency filtering minor matters, second high frequency filtering minor matters is equivalent to LC parallel resonance circuit.
According to the utility model discloses a low frequency radiation unit, side ground structure is the rectangle insulation board.
The utility model also provides a separable multi-frequency base station antenna, which comprises a first reflecting plate and a second reflecting plate;
the first reflecting plate is detachably connected with a plurality of high-frequency radiating units and a plurality of low-frequency radiating units;
and after the low-frequency radiation unit is separated from the first reflecting plate, the low-frequency radiation unit is detachably connected to the second reflecting plate.
According to the detachable multi-frequency base station antenna of the present invention, the dielectric substrate of the low frequency radiation unit is detachably connected to the first reflection plate or the second reflection plate through a support member; and/or
The side ground structure of the low-frequency radiation unit is detachably connected to the first reflecting plate or the second reflecting plate.
According to the detachable multi-frequency base station antenna of the present invention, the low frequency radiating elements form at least one row of low frequency linear arrays, and the low frequency linear arrays are distributed on the first reflecting plate or the second reflecting plate;
the plurality of high-frequency radiating units form at least one row of high-frequency linear arrays, and the high-frequency linear arrays are distributed on the first reflecting plate.
According to separable multifrequency base station antenna, every row the low frequency linear array corresponds to there is one side ground structure, every row in the low frequency linear array each low frequency radiation element the feed structure respectively with side ground structural connection.
According to the separable multi-frequency base station antenna of the present invention, the distance between two adjacent high-frequency radiating units is 0.3-0.7 wavelengths; and/or
The distance between two adjacent low-frequency radiation units is 0.3-0.8 wavelength.
According to separable multifrequency base station antenna, multifrequency base station antenna is active and passive integrated antenna, the high frequency linear array constitutes active antenna unit, the low frequency linear array constitutes passive antenna unit.
The utility model discloses a low frequency radiation unit includes dielectric substrate, radiator, feed structure and side ground structure, the radiator is located on the dielectric substrate; the side edge ground structure is fixed on the reflecting plate and is positioned on the side surface of the radiating body; the feed structure is electrically connected with the radiator and the side grounding structure respectively. Therefore, the utility model discloses low frequency radiation unit's feed adopts no balun form, at the side feed to simplify low frequency radiation unit's structure, can realize that the antenna size is miniaturized. In addition, the utility model discloses separable multifrequency base station antenna, including the first reflecting plate, detachable connection has a plurality of said low frequency radiating element and a plurality of high frequency radiating element on the first reflecting plate; the low-frequency radiation unit can be separated from the first reflecting plate, and then the low-frequency radiation unit is detachably connected to the second reflecting plate, so that the low-frequency radiation unit and the high-frequency radiation unit can respectively and independently work. The detachable multi-frequency base station antenna is preferably an active and passive integrated antenna.
Drawings
Fig. 1 is a schematic perspective view of a preferred low frequency radiating element of the present invention;
fig. 2 is a schematic front structural view of a radiator of the preferred low frequency radiating unit of the present invention;
fig. 3 is a schematic structural diagram of a local circuit of the preferred radiator of the present invention;
fig. 4 is an equivalent circuit diagram of the first high-frequency filtering branch of the preferred radiator of the present invention;
fig. 5 is a schematic perspective view of the detachable multi-frequency base station antenna of the present invention;
fig. 6 is a schematic front structural view of the detachable multi-frequency base station antenna of the present invention;
fig. 7 is a schematic diagram of the high-frequency and low-frequency independent operation of the detachable multi-frequency base station antenna of the present invention.
Reference numerals
A low-frequency radiating element 100; a dielectric substrate 10; a square substrate 11;
a rectangular arm 12; a radiator 20; a vertical line 21;
a horizontal line 22; bending the line 23; a feed structure 30;
a side ground structure 40; a detachable multi-frequency base station antenna 200;
a first reflection plate 300; a second reflection plate 400; the high-frequency radiation unit 500.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It should be noted that references in the specification to "one embodiment," "an example embodiment," etc., indicate that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Moreover, such phrases are not intended to refer to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.
Moreover, where certain terms are used throughout the description and following claims to refer to particular components or features, those skilled in the art will understand that manufacturers may refer to a component or feature by different names or terms. This specification and the claims that follow do not intend to distinguish between components or features that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. In addition, the term "connected" as used herein includes any direct and indirect electrical connection. Indirect electrical connection means include connection by other means.
Fig. 1 to 4 show the structure of the low frequency radiating element of the present invention, the low frequency radiating element (also called low frequency oscillator) 100 includes a dielectric substrate 10, a radiator 20, a feed structure 30, and a side ground structure 40. The radiator 20 is disposed on the dielectric substrate 10, and optionally, a line of the radiator 20 is printed on the dielectric substrate 10. The lateral ground structure 40 is fixed on the reflector 50 and located at a side of the radiator 20, and the lateral ground structure 40 serves as a ground. The feed structure 30 is connected to the radiator 20 at one end and to the side ground structure 40 at the other end, and the feed structure 30 is connected to a power supply. The utility model discloses low frequency radiation unit 100's feed adopts no balun form, at the side feed to simplify low frequency radiation unit 100's structure, can realize that the antenna size is miniaturized.
As shown in fig. 2 to 3, the radiator 20 includes two groups of dipoles orthogonally arranged, and the dipoles are respectively arranged in the ± 45 ° direction of the dielectric substrate 10, and the radiating arms of the two groups of dipoles include a vertical line 21 and a horizontal line 22 perpendicular to each other. Optionally, the vertical line 21 and the horizontal line 22 have equal lengths, and the lengths of the vertical line 21 and the horizontal line 22 are both 0.1-0.4 wavelengths, preferably, the lengths of the vertical line 21 and the horizontal line 22 are about 0.21-0.29 wavelengths, the two lines are connected into a right angle, and two groups of dipoles form a polarization of ± 45 degrees, thereby forming a dual-polarized radiation unit.
As shown in fig. 2 to 3, a multi-stage meander line 23 is preferably provided between the vertical line 21 and the horizontal line 22 of the radiator 20 to implement the first high-frequency filter branch. The multi-section bent line 23 can realize the inhibition effect on the high-frequency induced current, and can effectively reduce the influence on the radiation performance of the high-frequency radiation unit. Alternatively, the width of the meander line 23 is smaller than the width of the vertical line 21 and the horizontal line 22. In this embodiment, two bent lines 23 are respectively disposed between the vertical line 21 and the horizontal line 22 of the radiator 20. It should be noted that the number of the meander lines 23 is not limited, but can be set according to actual needs.
Optionally, the bent line 23 includes two longitudinal line segments and one transverse line segment, as shown in fig. 2 and 3, the upper ends of the two longitudinal line segments are respectively connected to the transverse line segment, and the lower ends of the two longitudinal line segments are respectively connected to the vertical line 21 or the horizontal line 22. Fig. 4 is the equivalent circuit diagram of the first high-frequency filter branch of the preferred radiator of the utility model, and the circuit 23 equivalence of buckling is LC parallel resonance circuit, and the circuit 23 of buckling itself is the inductance structure for the high frequency signal equivalence, and the gap equivalence between two vertical line segments of the circuit 23 of buckling is the capacitance structure. The LC parallel resonance circuit exhibits resonance for high frequency and forms an open circuit for high frequency signals, i.e. exhibits open circuit characteristics for high frequency signals and path characteristics for low frequency signals. That is, the radiator 20 performs filtering processing on high frequency, thereby effectively suppressing high frequency current and reducing the influence on high frequency radiation performance.
As shown in fig. 2 to 3, the dielectric substrate 10 preferably includes a square substrate 11, a rectangular arm 12 extends outwards from the middle of each of the four sides of the square substrate 11, and the radiation arm of the radiator 20 is printed on the square substrate 11 and the rectangular arm 12.
The side ground structure 40 is preferably made of an insulating material such as plastic, ceramic, etc. Alternatively, as shown in FIG. 1, the lateral ground structure 40 is preferably a rectangular insulating plate. It should be noted that the shape of the side ground structure 40 is not particularly limited, and may be designed according to actual needs.
As shown in fig. 1 and 3, the feeding structure 30 includes two feeding lines, one end of each feeding line is connected to the radiator 20, and the other end is connected to the lateral ground structure 40. Optionally, the feeding line includes segmented structures with different widths, and the second high-frequency filtering branch is implemented in a high-low resistance manner, so that the suppression effect on the high-frequency induced current is implemented, and the influence on the radiation performance of the high-frequency radiation unit can be effectively reduced, that is, the feeding structure 30 performs filtering processing on the high frequency. The second high-frequency filter branch can also be equivalent to an LC parallel resonance circuit, and the LC parallel resonance circuit resonates high frequency, so that a high-frequency signal forms an open circuit at the LC parallel resonance circuit, thereby effectively inhibiting high-frequency current and reducing the influence on high-frequency radiation performance. In this embodiment, the feeder line includes two horizontally arranged broadband line segments and two thin strip line segments, and two adjacent broadband line segments are connected by one thin strip line segment respectively. It should be noted that the number of the wide band line segments and the thin band line segments is not limited, but can be set according to actual needs.
Therefore, the low-frequency radiation unit 100 has a filtering characteristic for high frequency, radiation influence on the high-frequency radiation unit can be effectively reduced, gain loss of the high frequency after the low-frequency radiation unit 100 is added is reduced, the feed of the low-frequency radiation unit 100 adopts a balun-free form, and the antenna is fed at the side edge, so that the size miniaturization of the antenna can be realized.
Fig. 5 to 7 show the structure of the detachable multi-frequency base station antenna of the present invention, the detachable multi-frequency base station antenna 200 includes a first reflection plate 300 and a second reflection plate 400. The first reflection plate 300 is detachably connected with a plurality of high frequency radiation units (also called high frequency oscillators) 500 and a plurality of low frequency radiation units 100 as shown in fig. 1 to 4, and the high frequency radiation units 500 and the low frequency radiation units 100 can be detachably connected to the first reflection plate 300 by clamping, screwing, riveting or the like. In this connection mode, the low frequency radiation unit 100 and the high frequency radiation unit 500 can work together in the detachable multi-frequency base station antenna 200. Since the feed of the low-frequency radiation unit 100 is in a balun form and is fed at the side, the size miniaturization of the detachable multi-frequency base station antenna 200 can be realized.
Fig. 7 is a schematic diagram of the high frequency and low frequency independent operation of the detachable multi-frequency base station antenna of the present invention, because the low frequency radiating unit 100 is detachably connected to the first reflection plate 300, the low frequency radiating unit 100 can be separated from the first reflection plate 300. After the low frequency radiating unit 100 is separated from the first reflective plate 300, the low frequency radiating unit 100 is detachably connected to the second reflective plate 400, and the side ground structure 40 of the low frequency radiating unit 100 is also detachably connected to the second reflective plate 400, as shown in fig. 7, the low frequency radiating unit 100 has a ground structure. Alternatively, the low frequency radiation unit 100 may be detachably connected to the second reflection plate 400 by clamping, screwing, riveting, or the like. In this connection mode, the low frequency radiation unit 100 and the high frequency radiation unit 500 can operate independently from each other in the detachable multi-frequency base station antenna 200.
What need to remind is, the utility model discloses multifrequency base station antenna 200's low frequency radiating element 100 and high frequency radiating element 500's range and number are not limited, can set for wantonly according to actual need.
Preferably, the dielectric substrate 10 of the low frequency radiation unit 100 is detachably connected to the first reflection plate 300 or the second reflection plate 400 by a support. The supporting piece can be made of plastic materials.
Preferably, the lateral ground structure 40 of the low frequency radiation unit 100 is detachably connected to the first reflection plate 300 or the second reflection plate 400. Alternatively, the side ground structure 40 may be detachably connected to the first reflection plate 300 or the second reflection plate 400 by clamping, screwing, riveting, or the like.
As shown in fig. 5 to 6, in the detachable multi-frequency base station antenna 200, a plurality of low-frequency radiating units 100 form at least one row of low-frequency linear arrays, and the low-frequency linear arrays are distributed on the first reflecting plate 300 or the second reflecting plate 400. The plurality of high frequency radiating units 500 constitute at least one row of high frequency linear arrays, and the high frequency linear arrays are distributed on the first reflection plate 300. The detachable multi-frequency base station antenna 200 may include M low-frequency linear arrays and N high-frequency linear arrays, where M and N are integers greater than 1. In this embodiment, the detachable multi-frequency base station antenna 200 includes 2 low-frequency lines and 8 high-frequency lines, and two low-frequency lines are inserted into two sides of the 8 high-frequency lines. What needs to remind is, the utility model discloses multifrequency base station antenna 200's high frequency linear array and low frequency linear array's column number is unlimited, can set for wantonly according to actual need.
Preferably, each row of low frequency linear arrays has a side ground structure 40, and the feeding structures 30 of the low frequency radiating elements 100 in each row of low frequency linear arrays are respectively connected to the side ground structure 40. As shown in fig. 5 to 6, the detachable multi-frequency base station antenna 200 includes 2 low-frequency linear arrays and 8 high-frequency linear arrays, and a side of each low-frequency linear array is provided with a side ground structure 40, that is, two side ground structures 40 are respectively located at two sides of the first reflector 300 or the second reflector 400. If the multi-frequency base station antenna 200 includes 3 rows of low-frequency linear arrays, 3 side ground structures 40 are correspondingly needed, and the 3 side ground structures 40 are respectively located at two sides and in the middle of the first reflector 300 or the second reflector 400, so that balun-free feeding is realized.
Preferably, the distance between two adjacent low-frequency radiating elements 100 is 0.3-0.7 wavelength. The distance between two adjacent low-frequency radiation units 100 is preferably 0.53-0.73 wavelength. And/or the distance between two adjacent high-frequency radiation units 500 is 0.3-0.8 wavelength. It is preferable that the interval between the adjacent two high-frequency radiation units 500 is 0.5 wavelength.
Preferably, the multi-frequency base station antenna 200 is an active and passive integrated antenna (i.e., an a + P base station antenna), and the high-frequency linear arrays constitute active antenna units and the low-frequency linear arrays constitute passive antenna units.
To sum up, the low frequency radiation unit of the present invention comprises a dielectric substrate, a radiation body, a feed structure and a side ground structure, wherein the radiation body is arranged on the dielectric substrate; the side edge ground structure is fixed on the reflecting plate and is positioned on the side surface of the radiating body; the feed structure is electrically connected with the radiator and the side grounding structure respectively. Therefore, the utility model discloses low frequency radiation unit's feed adopts no balun form, at the side feed to simplify low frequency radiation unit's structure, can realize that the antenna size is miniaturized. In addition, the utility model discloses separable multifrequency base station antenna, including the first reflecting plate, detachable connection has a plurality of said low frequency radiating element and a plurality of high frequency radiating element on the first reflecting plate; the low-frequency radiation unit can be separated from the first reflecting plate, and then the low-frequency radiation unit is detachably connected to the second reflecting plate, so that the low-frequency radiation unit and the high-frequency radiation unit can respectively and independently work. The detachable multi-frequency base station antenna is preferably an active and passive integrated antenna.
Naturally, the present invention can be embodied in many other forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be made by one skilled in the art without departing from the spirit or essential attributes thereof, and it is intended that all such changes and modifications be considered as within the scope of the appended claims.
Claims (15)
1. A low-frequency radiating unit is characterized by comprising a dielectric substrate, a radiating body, a feed structure and a side ground structure; the radiator is arranged on the dielectric substrate; the side edge ground structure is fixed on the reflecting plate and is positioned on the side surface of the radiating body; one end of the feed structure is connected with the radiator, and the other end of the feed structure is connected with the side grounding structure.
2. The low-frequency radiating element according to claim 1, wherein the radiator comprises two groups of orthogonally distributed dipoles distributed and disposed in ± 45 ° directions of the dielectric substrate, and radiating arms of the two groups of dipoles comprise vertical lines and horizontal lines perpendicular to each other.
3. The low-frequency radiation unit according to claim 2, wherein the vertical line and the horizontal line have equal lengths, and the lengths are both 0.1-0.4 wavelengths.
4. The low frequency radiating element of claim 2, wherein a multi-segment meander line is arranged between the vertical line and the horizontal line of the radiator to implement a first high frequency filter branch; the bending line comprises two longitudinal line sections and one transverse line section, the upper ends of the two longitudinal line sections are respectively connected with the transverse line section, and the lower ends of the two longitudinal line sections are respectively connected with the vertical line or the horizontal line; the bending circuit is equivalent to an LC parallel resonance circuit, the bending circuit is equivalent to an inductance structure, and a gap between two longitudinal line sections of the bending circuit is equivalent to a capacitance structure.
5. The low frequency radiating element of claim 4, wherein the meander line has a width less than a width of the vertical line and the horizontal line.
6. The low-frequency radiating element according to claim 2, wherein the dielectric substrate comprises a square substrate, and a rectangular arm extends outwards from the middle of each of four sides of the square substrate;
the radiating arms of the radiator are printed on the square substrate and the rectangular arms.
7. The low frequency radiating element of claim 1, wherein the feeding structure comprises two feeding lines, and each feeding line has one end connected to the radiator and the other end connected to the side ground structure.
8. The low frequency radiating element of claim 7, wherein the feed line comprises segmented structures of different widths, implementing a second high frequency filtering stub in a high and low resistance form, the second high frequency filtering stub being equivalent to an LC parallel resonant circuit.
9. The low frequency radiating element of claim 1, wherein the lateral ground structure is a rectangular insulating plate.
10. A separable multi-frequency base station antenna is characterized by comprising a first reflecting plate and a second reflecting plate;
a plurality of high-frequency radiating units and a plurality of low-frequency radiating units as claimed in any one of claims 1 to 9 are detachably connected to the first reflecting plate;
and after the low-frequency radiation unit is separated from the first reflecting plate, the low-frequency radiation unit is detachably connected to the second reflecting plate.
11. The detachable multi-frequency base station antenna of claim 10, wherein the dielectric substrate of the low frequency radiating unit is detachably connected to the first reflector or the second reflector through a support; and/or
The side ground structure of the low-frequency radiation unit is detachably connected to the first reflecting plate or the second reflecting plate.
12. The detachable multi-frequency base station antenna according to claim 10, wherein a plurality of the low-frequency radiating elements form at least one row of low-frequency linear arrays, and the low-frequency linear arrays are distributed on the first reflecting plate or the second reflecting plate;
the plurality of high-frequency radiating units form at least one row of high-frequency linear arrays, and the high-frequency linear arrays are distributed on the first reflecting plate.
13. The detachable multi-frequency base station antenna according to claim 12, wherein each row of the low-frequency linear arrays corresponds to one of the side ground structures, and the feeding structures of the low-frequency radiating elements in each row of the low-frequency linear arrays are respectively connected to the side ground structures.
14. The detachable multi-frequency base station antenna according to claim 12, wherein the distance between two adjacent high-frequency radiating units is 0.3-0.7 wavelength; and/or
The distance between two adjacent low-frequency radiation units is 0.3-0.8 wavelength.
15. The detachable multi-frequency base station antenna as claimed in claim 12, wherein the multi-frequency base station antenna is an integrated active and passive antenna, the high-frequency linear arrays constitute active antenna elements, and the low-frequency linear arrays constitute passive antenna elements.
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| CN202120451407.1U CN214625373U (en) | 2021-03-02 | 2021-03-02 | Low-frequency radiation unit and separable multi-frequency base station antenna |
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| CN202120451407.1U CN214625373U (en) | 2021-03-02 | 2021-03-02 | Low-frequency radiation unit and separable multi-frequency base station antenna |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114361768A (en) * | 2021-12-30 | 2022-04-15 | 广东盛路通信科技股份有限公司 | Radiation element and multi-frequency base station antenna |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114361768A (en) * | 2021-12-30 | 2022-04-15 | 广东盛路通信科技股份有限公司 | Radiation element and multi-frequency base station antenna |
| CN114361768B (en) * | 2021-12-30 | 2024-04-02 | 广东盛路通信科技股份有限公司 | Radiating element and multi-frequency base station antenna |
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