CN111129737A - Antenna unit and array antenna - Google Patents
Antenna unit and array antenna Download PDFInfo
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- CN111129737A CN111129737A CN201911423961.2A CN201911423961A CN111129737A CN 111129737 A CN111129737 A CN 111129737A CN 201911423961 A CN201911423961 A CN 201911423961A CN 111129737 A CN111129737 A CN 111129737A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/2002—Dielectric waveguide filters
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
- H01Q1/526—Electromagnetic shields
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/061—Two dimensional planar arrays
Abstract
The invention relates to an antenna unit and an array antenna. The dielectric filter module is matched with the cavity structure and can be equivalent to a traditional dielectric filter in function, and the feed network circuit layer can be formed on the surface of the feed substrate in a coating mode and the like. Therefore, it is equivalent to integrate the feeding network and the dielectric filter in the conventional antenna on the dielectric substrate. When the array antenna is assembled, operations such as welding and screw connection of a feed network and a filter are not needed, and only a preset number of antenna units are arranged according to a certain rule, so that the operation and the structure can be effectively simplified. In addition, compared with a metal cavity structure, the density of the composite structure with metal plated on the surface of the cavity structure is smaller, so that the quality of the antenna unit is lighter. Therefore, the antenna unit can realize the light weight of the array antenna.
Description
Technical Field
The present invention relates to the field of mobile communications technologies, and in particular, to an antenna unit and an array antenna.
Background
The 5G mobile communication technology has been developed with a certain technical accumulation over several years. At present, a metal plate, die casting or PCB oscillator is mainly used as a radiation unit for the mainstream 5G large-scale antenna, and a PCB board is used for feeding. In addition, radio frequency components such as a filter and the like are required to be added on the back of the antenna so as to realize corresponding antenna indexes.
Several necessary components of the existing antenna are generally assembled separately and finally assembled into a complete machine through screws and rivets. Due to the numerous elements of the array antenna, the assembly is complicated, and the overall size and weight of the antenna are large.
Disclosure of Invention
Accordingly, it is necessary to provide an antenna unit and an array antenna that can achieve weight reduction.
An antenna unit, comprising:
the integrally formed dielectric substrate comprises a feed substrate and a cavity structure protruding out of one side of the feed substrate, and a metal layer is coated on the surface of the cavity structure to form a shielding cavity;
a radiating element mounted on one side of the feed substrate;
the feed network circuit layer is formed on the surface of the feed substrate and used for feeding the radiation unit; and
and the dielectric filter module is arranged in the cavity structure, and the output end of the dielectric filter module is electrically connected with the feed network circuit layer.
In one embodiment, one side of the cavity structure is open, the antenna unit further includes a shielding cover, and the shielding cover covers the opening of the cavity structure.
In one embodiment, a first limiting pillar extending toward the opening of the cavity structure is formed at the bottom of the cavity structure, the dielectric filter module has a first fixing hole, and the first limiting pillar is disposed in the first fixing hole in a penetrating manner.
In one embodiment, a second position-limiting pillar is formed at an edge of the opening of the cavity structure, a second fixing hole is formed in the shielding cover, and the second position-limiting pillar penetrates through the second fixing hole.
In one embodiment, the antenna further includes a feeding structure circuit layer integrally formed with the feeding network circuit layer, and the feeding structure circuit layer extends from the feeding substrate to the radiating element to feed power to the radiating element.
In one embodiment, a balun pillar is formed on the surface of the feed substrate, and the radiating element is plate-shaped and is mounted at one end of the balun pillar far away from the feed substrate.
In one embodiment, the feed structure line layer extends along the surface of the balun pillar towards the radiating element.
In one embodiment, the feed substrate is partially recessed to form a hollow columnar protrusion, and the radiating element is a metal laminated structure attached to an outer surface of the columnar protrusion.
In one embodiment, the feed structure line layer extends along the inner wall of the columnar protrusion to the radiation unit.
In one embodiment, the radiating element is mounted on a side of the feed substrate facing away from the cavity structure.
In one embodiment, the antenna further comprises a calibration network circuit layer, wherein the calibration network circuit layer is formed on one side, facing away from the radiating element, of the feed substrate and is electrically connected with the input end of the dielectric filter module.
In one embodiment, the antenna further comprises a metal reflector plate, and the metal reflector plate is arranged on one side of the feed substrate, which faces away from the radiating element.
In one embodiment, a third position-limiting pillar is formed on a side of the feed substrate facing away from the radiating element, a third fixing hole is formed in the metal reflecting plate, and the third position-limiting pillar penetrates through the third fixing hole.
In one embodiment, ribs distributed on the surface of the feed substrate are formed on one side of the feed substrate, which faces away from the radiating element, and the ribs are abutted to the metal reflecting plate.
The antenna unit, the dielectric filter module and the cavity structure are matched, the function of the antenna unit can be equivalent to that of a traditional dielectric filter, and the feed network circuit layer can be formed on the surface of the feed substrate in a coating mode and the like. Therefore, it is equivalent to integrate the feeding network and the dielectric filter in the conventional antenna on the dielectric substrate. When the array antenna is assembled, operations such as welding and screw connection of a feed network and a filter are not needed, and only a preset number of antenna units are arranged according to a certain rule, so that the operation and the structure can be effectively simplified. In addition, compared with a metal cavity structure, the density of the composite structure with metal plated on the surface of the cavity structure is smaller, so that the quality of the antenna unit is lighter. Therefore, the antenna unit can realize the light weight of the array antenna.
An array antenna comprising a plurality of antenna elements as described in any of the above preferred embodiments.
Drawings
Fig. 1 is a schematic structural diagram of an array antenna according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an array antenna according to another embodiment of the present invention;
fig. 3 is a schematic structural diagram of an antenna unit according to an embodiment of the present invention;
fig. 4 is a front assembly view of the antenna unit shown in fig. 3;
FIG. 5 is a rear assembly view of the antenna unit shown in FIG. 3;
fig. 6 is a schematic structural diagram of an antenna unit according to a second embodiment of the present invention;
FIG. 7 is a schematic diagram of a back side assembly of the antenna element of FIG. 6;
fig. 8 is a schematic rear view of an antenna unit according to a third embodiment of the present invention;
fig. 9 is a schematic structural diagram of an antenna unit according to a fourth embodiment of the present invention;
fig. 10 is a rear assembly view of the antenna unit shown in fig. 9.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 and 2, an antenna unit 100 and an array antenna 10 are provided. The array antenna 10 may be a 5G array antenna. The array antenna 10 includes a plurality of antenna elements 100.
The plurality of antenna elements 100 may be arranged according to a preset rule. For example, the array antenna 10 shown in fig. 1 includes 8 antenna elements 100, and each 8 antenna elements 100 are distributed in 2 rows and 4 columns. Obviously, the number of the antenna units 100 and the arrangement of the antenna units 100 can be adjusted according to different scale requirements of the array antenna 10.
Referring to fig. 3 to 5, an antenna unit 100 according to an embodiment of the present invention includes a dielectric substrate 110, a radiating unit 120, a feeding network circuit layer 130, and a dielectric filter module 140.
The dielectric substrate 110 is an integrally formed structure, and the material thereof may be plastic, resin, or the like. Typically, the dielectric substrate 110 is integrally formed by injection molding. The dielectric substrate 110 includes a feeding substrate 112 and a cavity structure 114, and the cavity structure 114 protrudes from one side of the feeding substrate 112. The outer contour of the cavity structure 114 may be cubical, oval, etc. The surface of the cavity structure 114 is covered with a metal layer (not shown) to form a shielding cavity. The metal layer may be distributed on the inner surface or the outer surface of the cavity structure 114.
The radiation unit 120 is used for receiving and radiating electromagnetic wave signals, and generally, a dual-polarized radiation unit 120 is used. The radiating element 120 may be in the form of a metal resonator structure, a PCB resonator structure, a plastic metalized resonator, a metal laminate structure, and the like. The radiation element 120 is mounted on one side of the feed substrate 112. The radiating element 120 may be located on the same side of the feeding substrate 112 as the cavity structure 114, or may be located on two different sides.
In the present embodiment, the radiation unit 120 is mounted on a side of the feeding substrate 112 facing away from the cavity structure 114. With such an arrangement, on the one hand, the convex cavity structure 114 can be prevented from shielding the radiation unit 120, thereby affecting the signal transceiving effect thereof. On the other hand, since the radiation element 120 and the cavity structure 114 are respectively located on two different sides of the feeding substrate 112, a transverse overlap between the two is allowed (i.e., orthographic projections of the two on the feeding substrate 112 at least partially overlap), which is beneficial to reasonably utilizing the space on the surface of the dielectric substrate 110, thereby reducing the size of the antenna element 100.
Further, one or more radiation elements 120 may be disposed on each feeding substrate 112. As shown in fig. 3, one radiating element 120 is provided for each feeding substrate 112 in this embodiment; in other embodiments, as shown in fig. 6 and 9, three radiating elements 120 are provided for each feeding substrate 112.
The feeding network circuit layer 130 is formed on the surface of the feeding substrate 112 and is used for feeding the radiation unit 120. The feed network circuit layer 130 may integrate functional circuits such as a power dividing circuit and a filter circuit, and is equivalent to a conventional feed network. Specifically, a circuit with a predetermined circuit structure may be formed on the surface of the feed substrate 112 by selective plating, chemical plating, and surface metal molding (LDS (laser direct structuring) technology, etc., so as to obtain the feed network circuit layer 130, which may be made of a good conductor such as copper, silver, etc.
The dielectric filter module 140 is disposed in the cavity structure 114, and an output end of the dielectric filter module 140 is electrically connected to the feeding network circuit layer 130. The cavity structure 114 and the metal layer on the surface thereof cooperate to form a shielding cavity, so that the isolation can be greatly improved. Specifically, the output end of the dielectric filter module 140 may be provided with a metalized via, and electrically connected to the feeding network circuit layer 130 through a metal pillar penetrating through the feeding substrate 112. The electromagnetic wave signal can be input through the input end of the dielectric filter module 140 and output from the output end into the feeding network circuit layer 130, and further used for feeding the radiation unit 120.
Referring to fig. 8, in an embodiment, the antenna unit 100 further includes a calibration network circuit layer 170, and the calibration network circuit layer 170 is formed on a side of the feeding substrate 112 facing away from the radiating element 120 and electrically connected to the input end of the dielectric filter module 140.
The calibration network wiring layer 170 may be shaped in the same manner as the feeding network wiring layer 130, with the feeding substrate 112 as the substrate. That is, the dielectric substrate 110 is equivalent to integrating the conventional calibration network and the feeding network at the same time, so that the structure of the antenna unit 100 is simplified.
It should be noted that a metal coating (not shown) is further coated on the corresponding position of the surface of the feeding substrate 112. The metal cladding layer is used to form a ground layer of the circuit layers such as the feed network circuit layer 130 and the calibration network circuit layer 170. Furthermore, the metal cladding is typically integrally connected to the metal layer on the surface of the cavity structure 114.
In the present embodiment, one side of the cavity structure 114 is open, the antenna unit 100 further includes a shielding cover 150, and the shielding cover 150 covers the opening of the cavity structure 114.
In particular, the shielding cover 150 may be a metal plate, a PCB board, or a composite dielectric plate structure with a metal plated surface, which covers the opening of the cavity structure 114, thereby forming a closed shielding cavity. The opening of the cavity structure 114 facilitates rapid loading of the dielectric filter module 140 into the cavity structure 114, thereby facilitating assembly.
As shown in fig. 3, the opening of the cavity structure 114 may be located on the same side as the radiation unit 120. As shown in fig. 7, 8 and 10, in other embodiments, the opening of the cavity structure 114 may also be located on a side facing away from the radiation unit 120. In this way, the radiation unit 120 can be prevented from causing a limit to the mounting of the dielectric filter module 140.
It should be noted that in other embodiments, a smaller sized notch may be formed in the side of the cavity structure 114 for accommodating the dielectric filter module 140. The dielectric filter module 140 can be inserted into the cavity structure 114 through the gap, and after the dielectric filter module 140 is inserted in place, the end of the dielectric filter module 140 can also play a role in shielding the gap, so that the sealing performance of the shielding cavity is ensured.
Further, referring to fig. 3 and fig. 4 again, in the present embodiment, a first position-limiting pillar 1141 extending toward the opening of the cavity structure 114 is formed at the bottom of the cavity structure 114, the dielectric filter module 140 has a first fixing hole 141 thereon, and the first position-limiting pillar 1141 is disposed in the first fixing hole 141.
The first position-limiting post 1141 is integrally formed when the dielectric substrate 110 is formed, and the dielectric filter module 140 can be mounted without relying on other metal connecting pieces and threaded pieces and without welding operation by matching the first position-limiting post 1141 with the first fixing hole 141, thereby being beneficial to reducing the weight of the antenna unit 100. Moreover, fewer metal components and solder joints are beneficial to ensure intermodulation performance of the dielectric filter module 140.
Specifically, in the embodiment, the first position-limiting post 1141 is a heat-melting post. During assembly, the first position-limiting post 1141 is inserted through the first fixing hole 141; then, the end of the first limit column 1141 protruding out of the dielectric filter module 140 is melted by a hot melting process; after it solidifies, the dielectric filter module 140 may be secured within the cavity structure 114.
It should be noted that the first position-limiting post 1141 and the first fixing hole 141 are not limited to being fixed by heat melting. For example, the first position-limiting post 1141 may be configured to be conical, and when the first position-limiting post 1141 passes through the first fixing hole 141, the first position-limiting post gradually engages with the hole wall of the first fixing hole 141.
Further, in the embodiment, a second position-limiting pillar 1143 is formed at an edge of the opening of the cavity structure 114, a second fixing hole 151 is formed on the shielding cover 150, and the second position-limiting pillar 1143 is disposed in the second fixing hole 151 in a penetrating manner.
The second position-limiting post 1143 and the first position-limiting post 1141 have the same structure and formation. Also, this can reduce the use of metal connectors such as screws and avoid welding operations. Therefore, the intermodulation performance of the dielectric filter module 140 can be further ensured while reducing the weight of the antenna unit 100.
The second position-limiting post 1143 may also be a heat-fusible post. When the shielding cover 150 is installed, the second position-limiting post 1143 is first inserted through the second fixing hole 151; then the end of the second limit post 1143 protruding from the shielding cover 150 is melted by the hot melting process; after it has solidified, the shield cover 150 may be secured to the edge of the opening of the cavity structure 114.
As can be seen from the above analysis, the dielectric substrate 110 is equivalent to integrating the feeding network and the dielectric filter in the conventional antenna. Furthermore, the dielectric substrate 110 can support the radiation unit 120, so that the radiation unit 120 can be conveniently installed.
When the whole machine is assembled, operations such as welding and screwing of the feed network and the filter are not needed. It can be seen that the assembly process is significantly simplified, which facilitates automated production to reduce costs. Also, since the use of a connector such as a screw is reduced, it is also advantageous to simplify the structure of the antenna unit 100 and to reduce the weight thereof. In addition, since the plurality of components form a whole, the structure of the antenna unit 100 is more compact, which is also advantageous for reducing the volume of the antenna unit 100 and realizing miniaturization of the array antenna 10.
Furthermore, the composite structure with the metal plated on the surface of the cavity structure 114 can simultaneously achieve a better shielding effect, and the mass of the antenna unit 100 can be further reduced, thereby realizing the light weight of the array antenna 10.
In order to further simplify the structure of the antenna unit 100, in the present embodiment, the antenna unit 100 further includes a feeding structure circuit layer 160 integrally formed with the feeding network circuit layer 130, and the feeding structure circuit layer 160 extends from the feeding substrate 112 to the radiation unit 120 to feed the radiation unit 120.
Feed structure line layer 160 may be shaped in the same manner as feed network line layer 130. Because the feed network circuit layer 130 and the feed structure circuit layer 160 are integrally formed, welding is not needed between the feed network circuit layer and the feed structure circuit layer, and welding spots do not exist.
Furthermore, the feeding structure line layer 160 functions similarly to a conventional feeding structure, such as a feeding balun or a feeding post, for feeding the radiating element 120. Thus, the feeding part is not required to be additionally arranged. On the one hand, the structure of the antenna unit 100 can be further simplified, and on the other hand, the intermodulation performance thereof can also be improved. The feeding structure circuit layer 160 can be directly electrically connected to the radiating element 120 for feeding, and can also realize non-contact coupling feeding.
As previously mentioned, the radiation unit 120 may take many different implementations. As shown in fig. 3 and 6, in one embodiment, the radiation unit 120 has a plate shape. A balun 1121 is formed on the surface of the feed substrate 112, and the radiation element 120 is mounted on one end of the balun 1121 remote from the feed substrate 112.
Specifically, the radiation unit 120 may be a metal plate, a PCB plate, or a patch oscillator structure. The balun pillar 1121 functions as a support, and the radiation unit 120 may be directly welded to the end of the balun pillar 1121.
Further, in one embodiment, the feeding structure line layer 160 extends along the surface of the balun pillar 1121 toward the radiating element 120.
The balun 1121 serves as a carrier of the feed structure circuit layer 160, and plays a role in supporting the feed structure circuit layer 160. Therefore, the balun 1121 is matched with the feeding structure circuit layer 160, and is equivalent to a conventional feeding balun and a feeding post. Specifically, the feeding structure line layer 160 may extend along the balun pillar 1121 to be in contact with the radiation element 120, so as to implement direct feeding, or may extend to be spaced from the radiation element 120 by a certain distance, so as to implement coupled feeding.
As shown in fig. 9 and 10, in another embodiment, the feeding substrate 112 is partially recessed to form a hollow stud bump 1123, and the radiating element 120 is a metal layer structure attached to the outer surface of the stud bump 1123.
The stud bumps 1123 act as a support for the metal layer structure, thereby forming the radiating element 120 and the dielectric substrate 110 into an integral structure. That is, the radiating element, the feeding network and the dielectric filter can be integrated on the dielectric substrate 110, so that the structure of the antenna unit 100 can be further simplified, and the volume and mass thereof can be further reduced.
Specifically, the hollow columnar projection 1123 may have a cubic shape or a cylindrical shape, that is, a rectangular or circular cross section. The supporting structure of the radiating element 120 is formed by making a local recess on the feeding substrate 112, so that the structure of the dielectric substrate 110 is more reasonable, and the injection molding yield is better.
Further, in one embodiment, the feed structure line layer 160 extends toward the radiating element 120 along the inner wall of the stud bump.
The feeding structure circuit layer 160 may extend along the inner wall of the stud bump 1123 to a position below the radiating element 120, and may be electrically connected through a metalized via hole to implement direct feeding, or may extend to a position spaced apart from the radiating element 120 by a certain distance to implement coupled feeding.
Referring to fig. 8 to 10, in an embodiment, the antenna unit 100 further includes a metal reflection plate 180, and the metal reflection plate 180 is disposed on a side of the feeding substrate 112 facing away from the radiation unit 120.
Specifically, the metal reflection plate 180 may reflect the electromagnetic wave signal for multiple times, thereby enhancing the efficiency of transmitting and receiving the signal by the radiation unit 120. The surface profile of the metal reflection plate 180 is generally substantially the same as the surface profile of the feed substrate 112, and the surfaces of the two are disposed opposite to each other. The metal reflection plate 180 may be mounted on the dielectric substrate 110 by screwing, welding, or the like.
In order to reduce solder joints and avoid introducing other components, in an embodiment, a third position-limiting pillar 1125 is formed on a side of the feed substrate 112 facing away from the radiating element 120, a third fixing hole 181 is formed on the metal reflector 180, and the third position-limiting pillar 1125 is inserted into the third fixing hole 181.
The third positioning posts 1125 may be the same as the first positioning posts 1141 and the second positioning posts 1143 in structure and type. Specifically, the third positioning posts 1125 may be heat-fusible posts. When the metal reflection plate 180 is installed, the third positioning posts 1125 are first inserted through the third fixing holes 181; melting the end of the third limiting post 1125 protruding from the back surface of the metal reflector 180 by a hot-melting process; after it is solidified, the metal reflection plate 180 is fixed to one side of the feed substrate 112.
For the case that the radiation unit 120 and the cavity structure 114 are respectively located at two sides of the feeding substrate 112, the metal reflection plate 180 is further provided with a avoiding hole 183. When the metal reflection plate 180 is installed, the cavity structure 114 passes through the avoiding hole 183.
Further, in one embodiment, the side of the feeding substrate 112 facing away from the radiating element 120 is formed with ribs 1127 scattered on the surface of the feeding substrate 112, and the ribs 1127 abut against the metal reflection plate 180.
Specifically, the ribs 1127 may be annularly distributed on the surface of the feeding substrate 112, or may linearly extend on the surface of the feeding substrate 112. In one aspect, the ribs 1127 may serve to reinforce the mechanical strength of the feeding substrate 112. On the other hand, the ribs 1127 may support the metal reflection plate 180, thereby maintaining a stable gap between the metal reflection plate 180 and the feed substrate 112.
It is noted that in other embodiments, the metal reflective plate 180 may be omitted. For example, in one embodiment shown in fig. 2, the array antenna 10 includes a reflector plate 200. The reflective plate 200 is made of substantially the same material and structure as the metal reflective plate 180, except that the reflective plate 200 has a larger surface area. Therefore, the reflection plate 200 can be shared by a plurality of antenna units 100.
In the antenna unit 100, the feeding network circuit layer 130 may be formed on the surface of the feeding substrate 112 by a plating method, and the dielectric filter module 140 may be integrated with the feeding network circuit layer 130 and the radiating unit 120 by the cavity structure 114 integrally formed with the feeding substrate 112. When the array antenna 10 is assembled, operations such as welding and screwing of a feed network and a filter are not required, and only a predetermined number of antenna units 100 are arranged according to a certain rule, so that the operation and structure can be effectively simplified. Moreover, a better shielding effect can be achieved at the same time, and the antenna unit 100 is lighter in weight. Therefore, the antenna unit 100 can reduce the weight of the array antenna.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (15)
1. An antenna unit, comprising:
the integrally formed dielectric substrate comprises a feed substrate and a cavity structure protruding out of one side of the feed substrate, and a metal layer is coated on the surface of the cavity structure to form a shielding cavity;
a radiating element mounted on one side of the feed substrate;
the feed network circuit layer is formed on the surface of the feed substrate and used for feeding the radiation unit; and
and the dielectric filter module is arranged in the cavity structure, and the output end of the dielectric filter module is electrically connected with the feed network circuit layer.
2. The antenna unit of claim 1, wherein the cavity structure is open on one side, the antenna unit further comprises a shield cover, and the shield cover covers the opening of the cavity structure.
3. The antenna unit of claim 2, wherein a first position-limiting pillar extending toward the opening of the cavity is formed at the bottom of the cavity, the dielectric filter module has a first fixing hole, and the first position-limiting pillar is disposed in the first fixing hole.
4. The antenna unit of claim 2, wherein a second position-limiting pillar is formed at an edge of the opening of the cavity, a second fixing hole is formed in the shielding cover, and the second position-limiting pillar is disposed in the second fixing hole in a penetrating manner.
5. The antenna element of claim 1, further comprising a feed structure line layer integrally formed with said feed network line layer, said feed structure line layer extending from said feed substrate toward said radiating element for feeding said radiating element.
6. The antenna element according to claim 5, wherein a balun pillar is formed on a surface of the feeding substrate, and the radiating element is plate-shaped and is mounted on an end of the balun pillar away from the feeding substrate.
7. The antenna element of claim 6, wherein said feed structure line layer extends along a surface of said balun pillar towards said radiating element.
8. The antenna element of claim 5, wherein the feeding substrate is partially recessed to form a hollow cylindrical protrusion, and the radiating element is a metal layer structure attached to an outer surface of the cylindrical protrusion.
9. The antenna element of claim 8, wherein said feed structure trace layer extends along an inner wall of the stud bump toward said radiating element.
10. The antenna element according to claim 1, wherein the radiating element is mounted on a side of the feed substrate facing away from the cavity structure.
11. The antenna element of claim 1, further comprising a calibration network wiring layer formed on a side of the feeding substrate facing away from the radiating element and electrically connected to the input terminal of the dielectric filter module.
12. The antenna element according to claim 1, further comprising a metal reflector plate disposed on a side of the feed substrate facing away from the radiating element.
13. The antenna unit of claim 12, wherein a third position-limiting pillar is formed on a side of the feeding substrate facing away from the radiating element, a third fixing hole is formed on the metal reflection plate, and the third position-limiting pillar is disposed in the third fixing hole in a penetrating manner.
14. The antenna element of claim 12, wherein ribs are distributed on the surface of the feed substrate on a side of the feed substrate facing away from the radiating element, and the ribs abut against the metal reflecting plate.
15. An array antenna comprising a plurality of antenna elements as claimed in any one of claims 1 to 14.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911423961.2A CN111129737A (en) | 2019-12-31 | 2019-12-31 | Antenna unit and array antenna |
| PCT/CN2020/110272 WO2021135267A1 (en) | 2019-12-31 | 2020-08-20 | Antenna unit and array antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911423961.2A CN111129737A (en) | 2019-12-31 | 2019-12-31 | Antenna unit and array antenna |
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| CN111129737A true CN111129737A (en) | 2020-05-08 |
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| CN201911423961.2A Pending CN111129737A (en) | 2019-12-31 | 2019-12-31 | Antenna unit and array antenna |
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| WO (1) | WO2021135267A1 (en) |
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| CN111613868A (en) * | 2020-05-25 | 2020-09-01 | 瑞声精密制造科技(常州)有限公司 | Antenna module |
| WO2021135267A1 (en) * | 2019-12-31 | 2021-07-08 | 京信通信技术(广州)有限公司 | Antenna unit and array antenna |
| WO2021237419A1 (en) * | 2020-05-25 | 2021-12-02 | 瑞声声学科技(深圳)有限公司 | Antenna module |
| CN114792875A (en) * | 2021-01-25 | 2022-07-26 | 南京以太通信技术有限公司 | Filter electrode manufacturing equipment and manufacturing method |
| WO2023051472A1 (en) * | 2021-09-30 | 2023-04-06 | 华为技术有限公司 | Antenna and base station antenna feeder system |
| WO2023123298A1 (en) * | 2021-12-31 | 2023-07-06 | 京东方科技集团股份有限公司 | Transparent oscillator unit, transparent antenna and antenna system |
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| CN206313105U (en) * | 2016-12-26 | 2017-07-07 | 武汉凡谷电子技术股份有限公司 | A kind of high power TM mould dielectric filters |
| HRP20220518T1 (en) * | 2016-12-27 | 2022-05-27 | Tongyu Communication Inc. | Radiating integrated antenna unit and multi-array antenna of same |
| CN107706544B (en) * | 2017-09-07 | 2021-01-26 | 广东通宇通讯股份有限公司 | Base station antenna and antenna array module thereof |
| US10741932B2 (en) * | 2017-09-30 | 2020-08-11 | Intel IP Corporation | Compact radio frequency (RF) communication modules with endfire and broadside antennas |
| CN107834175B (en) * | 2017-11-15 | 2023-09-29 | 福建福大北斗通信科技有限公司 | Miniaturized top-loading double-frequency four-arm spiral antenna and working method thereof |
| CN208256903U (en) * | 2018-04-13 | 2018-12-18 | 广东通宇通讯股份有限公司 | A kind of high-gain co-feeding omni-directional array antenna |
| CN111129737A (en) * | 2019-12-31 | 2020-05-08 | 京信通信技术(广州)有限公司 | Antenna unit and array antenna |
| CN211126054U (en) * | 2019-12-31 | 2020-07-28 | 京信通信技术(广州)有限公司 | Antenna unit and array antenna |
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2019
- 2019-12-31 CN CN201911423961.2A patent/CN111129737A/en active Pending
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2020
- 2020-08-20 WO PCT/CN2020/110272 patent/WO2021135267A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2021135267A1 (en) * | 2019-12-31 | 2021-07-08 | 京信通信技术(广州)有限公司 | Antenna unit and array antenna |
| CN111613868A (en) * | 2020-05-25 | 2020-09-01 | 瑞声精密制造科技(常州)有限公司 | Antenna module |
| WO2021237419A1 (en) * | 2020-05-25 | 2021-12-02 | 瑞声声学科技(深圳)有限公司 | Antenna module |
| CN114792875A (en) * | 2021-01-25 | 2022-07-26 | 南京以太通信技术有限公司 | Filter electrode manufacturing equipment and manufacturing method |
| CN114792875B (en) * | 2021-01-25 | 2023-10-20 | 南京以太通信技术有限公司 | Filter electrode manufacturing equipment and manufacturing method |
| WO2023051472A1 (en) * | 2021-09-30 | 2023-04-06 | 华为技术有限公司 | Antenna and base station antenna feeder system |
| WO2023123298A1 (en) * | 2021-12-31 | 2023-07-06 | 京东方科技集团股份有限公司 | Transparent oscillator unit, transparent antenna and antenna system |
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