High frequency radiators, low frequency radiators, multi-frequency radiators and antennas

Abstract

The present invention provides a high-frequency radiator, a low-frequency radiator, a multi-frequency radiator and an antenna. The high-frequency radiator includes a supporting balun and two pairs of polarized orthogonal first radiating arms arranged on the supporting balun. The side wall of the supporting balun is provided with a connecting portion protruding from the bottom of the supporting balun for the low-frequency radiator to be fixed to the supporting balun after being upwardly sleeved, and the connecting portion is provided with a first positioning hole for positioning and installing the low-frequency radiator. By providing a connecting portion on the side wall of the supporting balun, when the low-frequency radiator and the high-frequency radiator are nested and installed, the low-frequency radiator is fixed by the connecting portion protruding from the side wall thereof, thereby reducing the complex structure that requires multiple components to be configured when the conventional low-frequency radiator is used as a carrier, simplifying the structure when the high-frequency radiator and the low-frequency radiator are assembled, and improving assembly efficiency and assembly quality.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a high-frequency radiator, a low-frequency radiator, a multi-frequency radiator and an antenna. Background Art

[0002] With the development of mobile communication networks, the number of required frequency bands continues to increase. Multi-frequency and multi-polarization base station antennas that meet the needs of co-site sharing have become a development trend. The corresponding base station antennas need to be able to integrate multiple frequency bands into one antenna to meet the common needs of each operator or multiple operators. Especially in the 5G network era, it is required that one antenna integrate all 4G network standard antennas, and multiple antenna arrays are set in the antenna. In order to achieve the co-planar setting of multiple frequency bands inside the antenna, different frequency bands often adopt coaxial settings, and high and low frequencies adopt nested array settings. The high-frequency radiation unit is fixed inside the low-frequency radiation unit as part of the radiation device. At the same time, a high-frequency reflector structure is added to ensure the high-frequency radiation index. A single multi-frequency radiation device has many components and complex assembly, which makes the assembly process complicated and time-consuming during mass production. At the same time, the assembly quality of the connection points of each component becomes a difficult point in the quality control of antenna products during mass production. Summary of the invention

[0003] The primary object of the present invention is to provide a high-frequency radiator that can simplify the nesting structure with the low-frequency radiator;

[0004] Another object of the present invention is to provide a low-frequency radiator that can simplify the nesting structure with the high-frequency radiator;

[0005] Another object of the present invention is to provide a multi-frequency radiator that can simplify the nested structure of the high-frequency radiator and the low-frequency radiator;

[0006] Another object of the present invention is to provide an antenna using the above multi-frequency radiator.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] A high-frequency radiator includes a supporting balun and two pairs of polarization-orthogonal first radiating arms arranged on the supporting balun. The side wall of the supporting balun is provided with a connecting portion that can allow a low-frequency radiator to be inserted upward from the bottom of the supporting balun and then fixed to the supporting balun. The connecting portion is provided with a first positioning hole that can be used to position and install the low-frequency radiator.

[0009] It is further provided that: an embedding groove for embedding a low-frequency cable for feeding the low-frequency radiator is provided on the outer side wall of the supporting balun.

[0010] It is further configured that: the height of the first radiating arm relative to the bottom of the supporting balun is 0.25 to 0.5 times the wavelength of the center frequency of the working frequency band of the high-frequency radiator, and the height of the connecting part relative to the bottom of the supporting balun is 0.1 to 0.25 times the wavelength of the center frequency of the working frequency band of the high-frequency radiator.

[0011] The present invention also provides a low-frequency radiator, including a base plate and four second radiating arms extending upward from the outer circumference of the base plate, a mounting hole for the high-frequency radiator to pass through is opened in the middle of the base plate, and a second positioning hole for the high-frequency radiator to be positioned and installed is opened on the base plate.

[0012] It is further configured that: a balun slot is provided between adjacent second radiation arms and a balun structure is formed at the balun slot, and a feeding component is provided on the balun structure and straddles the balun slot.

[0013] It is further configured that: the feeding assembly comprises a dielectric plate and a low-frequency feeding sheet for feeding the second radiating arm, and the dielectric plate is provided with a mounting groove for embedding the low-frequency feeding sheet.

[0014] It is further provided that: a hook portion is extended from one side of the upper edge of the dielectric plate away from the feeding plate, and a hole for the hook portion to be hooked and fixed is opened on the balun structure.

[0015] The present invention also provides a multi-frequency radiator, including the above-mentioned low-frequency radiator, and also includes a high-frequency radiator, including a supporting balun and two pairs of polarization orthogonal first radiating arms arranged on the supporting balun, the supporting balun has a connecting portion protruding on the side wall, the connecting portion is provided with a first positioning hole for positioning and installing the low-frequency radiator, the supporting balun passes through the mounting hole so that the connecting portion abuts against the bottom plate, and the first positioning hole and the second positioning hole correspond to each other.

[0016] It is further configured that an embedding groove is provided on the outer side wall of the supporting balun, and a low-frequency cable for feeding the low-frequency radiator is embedded in the embedding groove.

[0017] It is further configured that: the height of the first radiating arm relative to the bottom of the supporting balun is 0.25 to 0.5 times the wavelength of the center frequency of the working frequency band of the high-frequency radiator, and the height of the connecting part relative to the bottom of the supporting balun is 0.1 to 0.25 times the wavelength of the center frequency of the working frequency band of the high-frequency radiator.

[0018] The present invention also provides an antenna, including a reflector and a high-frequency array and a multi-frequency array arranged on the reflector, wherein the multi-frequency array includes at least one of the multi-frequency radiators mentioned above, and the high-frequency array includes at least one high-frequency radiation unit.

[0019] Further configuration: the multi-frequency array includes a plurality of the multi-frequency radiators, and also includes a high-frequency radiator arranged between two adjacent multi-frequency radiators, and a reflective sheet is sleeved on the supporting balun of the high-frequency radiator from bottom to top, and the reflective sheet is fixed to the connecting part.

[0020] Compared with the prior art, the solution of the present invention has the following advantages:

[0021] 1. In the high-frequency radiator involved in the present invention, by arranging a connecting portion on the side wall of the supporting balun, when the low-frequency radiator and the high-frequency radiator are nested and installed, the supporting balun can pass through the low-frequency radiator and fix the low-frequency radiator through the connecting portion protruding from the side wall thereof, thereby reducing the complex structure that requires configuring multiple components when the low-frequency radiator is conventionally used as a carrier, simplifying the structure when the high-frequency radiator and the low-frequency radiator are assembled, and improving assembly efficiency and assembly quality.

[0022] 2. In the low-frequency radiator involved in the present invention, a mounting hole for the high-frequency radiator to pass through is opened on the base plate, and the second positioning hole on the base plate and the high-frequency radiator are used to achieve positioning and installation, thereby reducing the complex structure of configuring multiple components when the low-frequency radiator is used as a carrier, thereby improving assembly efficiency and assembly quality.

[0023] 3. In the multi-frequency radiator involved in the present invention, the low-frequency radiator is placed on the supporting balun from the bottom of the high-frequency radiator upward, and is positioned and installed through the connecting part on the supporting balun. The assembly structure of the two is simple, which reduces the complex structure of configuring multiple components when the low-frequency radiator is used as a carrier, and improves the assembly efficiency.

[0024] 4. In the antenna involved in the present invention, by adopting the above-mentioned multi-frequency radiator, the assembly structure of the antenna is greatly simplified, the assembly efficiency of the antenna is improved, and the overall weight of the product is reduced.

[0025] Additional aspects and advantages of the present invention will be given in part in the following description, which will become obvious from the following description, or may be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0027] Figure 1 It is a structural schematic diagram of a high-frequency radiator in an embodiment of the present invention;

[0028] Figure 2 It is a structural schematic diagram of a low-frequency radiator in an embodiment of the present invention;

[0029] Figure 3A schematic diagram of the structure of a feeding assembly in an embodiment of the present invention;

[0030] Figure 4 It is a structural schematic diagram of a multi-frequency radiator in one embodiment of the present invention;

[0031] Figure 5 A cross-sectional schematic diagram of a multi-frequency radiator in one embodiment of the present invention;

[0032] Figure 6 FIG. 4 is a schematic diagram of the structure of an antenna in an embodiment of the present invention. DETAILED DESCRIPTION

[0033] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be interpreted as limiting the present invention.

[0034] like Figure 1 and Figure 5 As shown, the present invention discloses a high-frequency radiator 11, including a supporting balun 111 and two pairs of polarization orthogonal first radiating arms 112 connected to the supporting balun 111, the high-frequency radiator 11 also includes two high-frequency feeding plates 113 staggered up and down, each of the high-frequency feeding plates 113 corresponding to the two diagonal first radiating arms 112 are fed.

[0035] The side wall of the support balun 111 is provided with a connection part 1111 protruding from the side wall of the support balun 111, through which the low-frequency radiator 12 can be mounted upward from the bottom of the support balun 111 and fixed to the support balun 111. In this embodiment, two connection parts 1111 are symmetrically arranged on the side wall of the support balun 111. The connection part 1111 is also provided with a first positioning hole 11111 through the top and bottom, through which the low-frequency radiator 12 can be positioned and installed.

[0036] Preferably, the height of the first radiating arm 112 relative to the bottom of the supporting balun 111 is 0.25 to 0.5 times the wavelength of the center frequency of the working frequency band of the high-frequency radiator 11, and the height of the connecting portion 1111 relative to the bottom of the supporting balun 111 is 0.1 to 0.25 times the wavelength of the center frequency of the working frequency band of the high-frequency radiator 11.

[0037] By providing a connecting portion 1111 on the side wall of the supporting balun 111, when the low-frequency radiator 12 and the high-frequency radiator 11 are nested and installed, the supporting balun 111 can pass through the low-frequency radiator 12 and fix the low-frequency radiator 12 through the connecting portion 1111 protruding from the side wall thereof, thereby reducing the complex structure of multiple components required to be configured when the low-frequency radiator 12 is conventionally used as a carrier, simplifying the structure of the high-frequency radiator 11 and the low-frequency radiator 12 when assembled, and improving assembly efficiency and assembly quality.

[0038] In this embodiment, four mounting channels 1112 are provided inside the supporting balun 111 corresponding to the four first radiating arms 112, through which the high-frequency feeding plate 113 can pass. The high-frequency feeding plate 113 passes through the top of one of the mounting channels 1112 and bends to pass into the diagonal mounting channel 1112, so as to feed the two diagonal first radiating arms 112. One end of the high-frequency feeding plate 113 extends to the bottom of the supporting balun 111, and the high-frequency feeding plate 113 is fed by the bottom of the supporting balun 111. Furthermore, a plurality of dielectric clamps 114 for fixing the high-frequency feeding plate 113 are provided in the mounting channel 1112. The dielectric clamps 114 are used to clamp the high-frequency feeding plate 113 to improve the stability of the high-frequency feeding plate 113.

[0039] In this embodiment, an embedding groove 1113 is provided on the outer side wall of the support balun 111, into which a low-frequency cable 15 for feeding the low-frequency radiator 12 is embedded. Since the support balun 111 can be used as a carrier for the low-frequency radiator 12 to be mounted, the support balun 111 also provides support for the low-frequency radiator 12. By providing the embedding groove 1113 on the support balun 111, a positioning function is provided for the installation of the low-frequency cable connected to the low-frequency radiator 12, and the assembly structure of the high-frequency radiator 1111 and the low-frequency radiator 1212 is more streamlined.

[0040] Combination Figures 2 to 4 As shown, the present invention also provides a low-frequency radiator 12, including a bottom plate 121 and four second radiating arms 122 extending upward from the outer circumference of the bottom plate 121, the four second radiating arms 122 forming two pairs of orthogonal polarizations and forming a bowl-shaped structure together. A mounting hole 1211 is provided in the middle of the bottom plate 121 for the support balun 111 of the high-frequency radiator 11 to pass through, and a second positioning hole (not shown in the figure) is also provided on the bottom plate 121 for positioning and installing the high-frequency radiator 11.

[0041] By opening a mounting hole 1211 on the base plate 121 for the high-frequency radiator 11 to pass through, and using a second positioning hole on the base plate 121 to achieve positioning and installation with the high-frequency radiator 11, the complex structure of configuring multiple components when the low-frequency radiator 12 is conventionally used as a carrier is reduced, thereby improving assembly efficiency and assembly quality.

[0042] In this embodiment, a balun slot 123 is provided between adjacent second radiating arms 122, and a balun structure 124 is formed at the balun slot 123. A feeding component 125 is provided on the balun structure 124 and straddles the balun slot 123. The feeding component 125 can feed the second radiating arm 122 to achieve a dual polarization function, and the feeding component 125 straddles the balun slot 123 to improve the strength of the overall structure of the low-frequency radiator 12 and ensure the stability of the electrical performance of the low-frequency radiator 12.

[0043] In this embodiment, the feeding assembly 125 includes a dielectric plate 1251 and a low-frequency feeding sheet 1252 for feeding the second radiating arm 122. The dielectric plate 1251 is provided with a mounting groove 12511 for the low-frequency feeding sheet 1252 to be embedded. Specifically, the low-frequency feeding sheet 1252 is coupled to the second radiating arm 122. In other embodiments, the radiating arm can also be fed by a cable direct welding structure.

[0044] In this embodiment, four hooks 12512 are provided on the dielectric plate 1251 along a side away from the low-frequency feeding plate 1252. Specifically, two hooks 12512 are provided on both sides of the dielectric plate 1251 along the length direction. A hole 1241 is provided on the balun structure 124 for the hooks 12512 to be hooked and fixed. Specifically, the hole 1241 is L-shaped. The hole 1241 allows the hooks 12512 to pass through and then slide along the length direction of the dielectric plate 1251 and engage with the hole 1241 to limit the hooks 12512 from falling out of the hole 1241. Preferably, after the hooks 12512 are engaged with the hole 1241, the dielectric plate 1251 is welded and fixed to the balun structure 124.

[0045] With the help of the installation matching structure of the hook portion 12512 and the card hole 1241, the feeding assembly 125 is more convenient and quick to install, and the difficulty of assembly is reduced. The matching structure of the hook portion 12512 and the card hole 1241 greatly improves the installation stability of the feeding assembly 125 and enhances the electrical performance stability of the low-frequency radiator 12.

[0046] The present invention also provides a multi-frequency radiator, including the above-mentioned high-frequency radiator 11 and low-frequency radiator 12, wherein the high-frequency radiator 11 and the low-frequency radiator 12 are nested with each other. Specifically, the supporting balun 111 of the high-frequency radiator 11 passes through the mounting hole 1211 on the base plate 121 of the low-frequency radiator 12 so that the connecting part 1111 abuts against the base plate 121, and the first positioning hole 11111 corresponds to the second positioning hole, and then the low-frequency radiator 12 and the high-frequency radiator 11 are fixed to each other by welding.

[0047] In this embodiment, the support balun 111 of the high-frequency radiator 11 passes through the bottom plate 121 of the low-frequency radiator 12, and the support balun 111 can provide support for the first radiating arm 112 of the high-frequency radiator 11, and also provide support for the low-frequency radiator 12. The high-frequency radiator 11 is used as a carrier, the low-frequency radiator 12 is used as an auxiliary structure, and the low-frequency radiator 12 can be fixed only by the connecting portion 1111 on the support balun 111, which reduces the conventional complex structure of using the low-frequency radiator 12 as a carrier and the high-frequency radiator 11 as an auxiliary and configuring multiple components at the same time, greatly simplifies the structure of the multi-frequency radiator, and improves the assembly efficiency and assembly consistency.

[0048] Specifically, in this embodiment, when the first positioning hole 11111 corresponds to the second positioning hole, the dual polarization directions of the low frequency radiator 12 and the high frequency radiator 11 remain consistent, that is, the diagonal direction of the first radiation arm 112 is the same as the diagonal direction of the second radiation arm 122 .

[0049] Furthermore, the multi-frequency radiator also includes an insulating pad 13 sleeved on the bottom of the supporting balun 111, and the insulating pad 13 insulates and isolates the high-frequency feeding plate 113 and the low-frequency cable 15 to prevent interference between the high-frequency feeding and the low-frequency feeding.

[0050] Combination Figure 6 As shown, the present invention further provides an antenna, including a reflector 2, and a high-frequency array 3 and a multi-frequency array 1 arranged on the reflector 2, wherein the high-frequency array 3 includes at least one high-frequency radiation unit 31, and the multi-frequency array 1 includes at least one multi-frequency radiator. In this embodiment, one high-frequency array 3 is provided on each side of the multi-frequency array 1, the height of the high-frequency radiation unit 31 is lower than the high-frequency radiator 11, and each high-frequency array 3 includes four high-frequency radiation units 31.

[0051] In this embodiment, the multi-frequency array 1 includes two multi-frequency radiators. In other embodiments, more than two multi-frequency radiators may be provided. Preferably, the spacing between two adjacent multi-frequency radiators is 0.8-1 times the wavelength of the low-frequency radiator 12 .

[0052] The multi-frequency array 1 also includes two high-frequency radiators 11 that are staggered between the two multi-frequency radiators, and a reflective sheet 14 is sleeved on the supporting baluns 111 of the two high-frequency radiators 11 from bottom to top, and the reflective sheet 14 is fixed to the connecting portion 1111. In the present embodiment, the reflective sheet 14 is welded and fixed to the connecting portion 1111, and the area of ​​the reflective sheet 14 is larger than the area formed by the four first radiating arms 112 of the high-frequency radiator 11.

[0053] By installing a reflector 14 on the supporting balun 111 of the high-frequency radiator 11, the radiation signal of the high-frequency radiator 11 can be reflected, and the consistency with the signal radiation of the multi-frequency radiator can be maintained, thereby improving the directional performance of the antenna.

[0054] The above descriptions are only some embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A multi-frequency radiator, characterized in that: It includes a low-frequency radiator and a high-frequency radiator, wherein the high-frequency radiator includes a supporting balun and two pairs of first radiating arms with orthogonal polarizations arranged on the supporting balun; The low-frequency radiator comprises a bottom plate and four second radiating arms extending upward from the outer circumference of the bottom plate, a mounting hole for the high-frequency radiator to pass through is provided in the middle of the bottom plate, and a second positioning hole for the high-frequency radiator to be positioned and installed is provided on the bottom plate; A connecting portion is protruded on the side wall of the supporting balun, and a first positioning hole is opened on the connecting portion for the low-frequency radiator to be positioned and installed by being inserted upward from the bottom of the supporting balun. The supporting balun passes through the installation hole so that the connecting portion abuts against the bottom plate, and the first positioning hole and the second positioning hole correspond to each other; A balun slot is provided between adjacent second radiating arms and a balun structure is formed at the balun slot, a feeding assembly is provided on the balun structure and is arranged across the balun slot, the feeding assembly is used to feed the low-frequency radiator and improve the overall structural strength of the low-frequency radiator; the feeding assembly includes a dielectric plate and a low-frequency feeding sheet for feeding the second radiating arm, the dielectric plate is provided with a mounting groove for the low-frequency feeding sheet to be embedded; a hook portion is extended from the upper side of the dielectric plate away from the feeding sheet, and a hole is provided on the balun structure for the hook portion to be hooked and fixed.

2. The multi-frequency radiator according to claim 1, characterized in that: An embedding groove is provided on the outer side wall of the supporting balun, and a low-frequency cable for feeding the low-frequency radiator is embedded in the embedding groove.

3. The multi-frequency radiator according to claim 1, characterized in that: The height of the first radiating arm relative to the bottom of the supporting balun is 0.25 to 0.5 times the wavelength of the center frequency of the working frequency band of the high-frequency radiator, and the height of the connecting portion relative to the bottom of the supporting balun is 0.1 to 0.25 times the wavelength of the center frequency of the working frequency band of the high-frequency radiator.

4. An antenna, characterized in that: It comprises a reflection plate and a high-frequency array and a multi-frequency array arranged on the reflection plate, the multi-frequency array comprises at least one multi-frequency radiator as claimed in any one of claims 1 to 3, and the high-frequency array comprises at least one high-frequency radiation unit.

5. The antenna according to claim 4, characterized in that: The multi-frequency array includes a plurality of the multi-frequency radiators, and also includes a high-frequency radiator arranged between two adjacent multi-frequency radiators, and a reflector is sleeved on the supporting balun of the high-frequency radiator from bottom to top.

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