CN110676561A - Radiating element and antenna of ultra-wideband dual-polarized LTE antenna - Google Patents
Radiating element and antenna of ultra-wideband dual-polarized LTE antenna Download PDFInfo
- Publication number
- CN110676561A CN110676561A CN201910872433.9A CN201910872433A CN110676561A CN 110676561 A CN110676561 A CN 110676561A CN 201910872433 A CN201910872433 A CN 201910872433A CN 110676561 A CN110676561 A CN 110676561A
- Authority
- CN
- China
- Prior art keywords
- sheet
- bottom plate
- unit body
- vertical part
- feeding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
-
- 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
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- 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
Landscapes
- Waveguide Aerials (AREA)
Abstract
A radiation unit and an antenna of an ultra-wideband dual-polarized LTE antenna comprise a unit body, a feed sheet and a support bracket, wherein the unit body comprises a bottom plate, four balun arms and four oscillator arms, and a gain plate perpendicular to the planes of the oscillator arms is arranged on the upper surfaces of the oscillator arms; the feeding sheet comprises a first feeding sheet and a second feeding sheet which are orthogonally arranged, the first feeding sheet penetrates through a through hole in the supporting table, a horizontal part is clamped in the upper buckle, a horizontal part of the second feeding sheet is clamped in the lower buckle, and the supporting bracket is installed at an upper port of the unit body. The invention ensures that the positioning of the feed sheet is more stable and the isolation degree is higher, thereby effectively improving the consistency of the relative position of the feed sheet; the frequency band of the radiation unit is widened, and the beam width balance is improved; the coupling feed mode enables the unit body to realize an electroplating-free process, and the special-shaped arrangement of the gain board is more suitable for the die-casting processing process of the radiation unit.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a radiation unit and an antenna of an ultra-wideband dual-polarized LTE antenna.
Background
In the communication technology, the communication system has an increasing interest in various indexes of the base station antenna, particularly gain, frequency bandwidth, isolation, processing technology, processing cost and the like, and the ultra-wideband base station antenna is a necessary trend for the development of the base station antenna. The unit feed process adopts a coupling feed welding-free process, and avoids a unit electroplating process, thereby reducing the production cost and reducing the environmental pollution. The isolation performance, positioning stability and other states of the elements in the radiation unit all determine various characteristics of the base station antenna, and meanwhile, the intermodulation index is a technical difficulty of the base station antenna. The radiating element, as one of the components generating intermodulation products, has a significant impact on the intermodulation performance of the base station antenna.
Therefore, the improvement of the stability, the electrical performance and the process performance reliability of the ultra-wideband dual-polarized unit needs to be solved urgently.
Disclosure of Invention
The invention aims to solve the problems that: the positional stability of the components in the radiating element and the improvement of the electrical and technological properties.
In order to solve the above problems, the invention provides a radiation unit of an ultra-wideband dual-polarized LTE antenna, which comprises a unit body 1, a feed sheet 2 and a support bracket 3, wherein the unit body 1 comprises a bottom plate 11, four balun arms 12 and four oscillator arms 13, the bottom plate 11 is provided with two through holes, the four balun arms 12 are arranged around the bottom plate 11 at intervals and extend upwards from the edge of the bottom plate 11 to form an accommodating cavity, and a gap is formed between every two adjacent balun arms 12; the upper ends of the four balun arms 12 are respectively and correspondingly connected with vibrator arms 13 extending outwards; the vibrator arm 13 is in a trapezoid sheet shape, the lower bottom of the trapezoid is connected with the balun arm 12, and the trapezoid extends outwards to the upper bottom of the trapezoid; the opposite vibrator arms 13 are grouped in pairs, and each group of vibrator arms 13 is arranged orthogonally; the upper surface of the vibrator arm 13 is provided with a gain plate 14 vertical to the plane of the vibrator arm 13; the feed tabs 2 comprise a first feed tab and a second feed tab, each feed tab 2 is in an inverted U shape and comprises a first vertical part 21, a second vertical part 22 and a horizontal part 23 connecting the first vertical part 21 and the second vertical part 22, the first vertical part 21 is longer than the second vertical part 22, and the first feed tab and the second feed tab are orthogonally arranged; the supporting bracket 3 comprises a supporting platform 31, an upper buckle 32 and a lower buckle 33, the supporting platform 31 is matched with the upper port of the unit body 1, the upper buckle 32 is arranged on the upper surface of the supporting platform 31, the lower buckle 33 is arranged on the lower surface of the supporting platform 31, the upper buckle 32 and the lower buckle 33 are orthogonally arranged, and the supporting platform 31 further comprises a through hole for the first vertical part 21 and the second vertical part 22 of the first feeding piece to pass through; the first vertical portion 21 and the second vertical portion 22 of the first feeding tab pass through the through holes of the supporting platform 31, the horizontal portion 23 of the first feeding tab is clamped in the upper clamp 32, the horizontal portion 23 of the second feeding tab is clamped in the lower clamp 33, and the supporting bracket 3 is mounted at the upper port of the unit body 1, so that the feeding tabs 2 are disposed inside the unit body 1, and the first vertical portions 21 of the two feeding tabs 2 extend out of the two through holes of the bottom plate 11.
According to one embodiment of the present invention, the radiation unit further comprises a limiting bracket 4, wherein the limiting bracket 4 is located inside the unit body 1 and is arranged close to the bottom plate 11; the limiting support 4 comprises a limiting table 41, and the periphery of the limiting table 41 is attached to the accommodating cavity; the upper surface of the limit table 41 is provided with two upper bosses 42 extending upwards, the lower surface is provided with two lower bosses 43 extending downwards, and the periphery of the limit table 41 is provided with four positioning blocks 44; the two upper bosses 42 are respectively provided with a blind hole, and the blind holes respectively correspond to the second vertical part 22 of the first feed sheet and the second vertical part 22 of the second feed sheet, so that the second vertical part 22 is limited; the two lower bosses 43 are provided with through holes penetrating through the lower bosses 43 and the limiting table 41, and correspondingly accommodate the first vertical parts 21 of the first feeding pieces and the first vertical parts 21 of the second feeding pieces respectively, and the first vertical parts 21 penetrate through the lower bosses 43 and extend downwards to form the limiting of the first vertical parts 21; the two lower bosses 43 penetrate through the two through holes on the bottom plate 11, so that the limiting table 41 is attached to the bottom plate 11; the positioning blocks 44 are respectively engaged with gaps between the balun arms 12, and are used for fixing the positioning bracket inside the unit body 1.
According to an embodiment of the present invention, the bottom plate 11 of the unit body 1 is provided with a screw hole, and the position-limiting table 41 is provided with a screw hole corresponding to the screw hole for fixing the position-limiting table 41 to the bottom plate 11 using a screw.
According to one embodiment of the invention, the radiating element further comprises a cross-guide 5, the cross-guide 5 being mounted on the support bracket 3; the support bracket 3 further comprises four support columns 34, the support columns 34 extend upwards from the edge of the support table 31, and the top ends of the support columns 34 are provided with mounting positions for mounting the cross-shaped guide piece 5 and enabling the cross-shaped guide piece 5 to correspond to the directions of the two orthogonally arranged vibrator arms 13; the cross guide 5 is located above the vibrator arm 13 by being mounted on the support column 34, for realizing band broadening and controlling horizontal plane beam width.
According to an embodiment of the present invention, the radiation unit further includes a unit pad 6, and the unit pad 6 is mounted on a lower bottom surface of the bottom plate 11 of the unit body 1 for performing an insulation process on the unit body 1.
According to an embodiment of the present invention, two sets of upper clips 32 are provided between the supports, and are respectively clipped on the horizontal portion 23 of the first feeding piece; the horizontal portion 23 of the first feeding tab is provided with a protrusion extending to both sides between the two sets of upper clips 32, and is held by the two sets of upper clips 32.
According to one embodiment of the present invention, the gain plate 14 is shaped like a fin, and is inclined at an end close to the balun arm 12, the angle between the inclined surface and the upper surface of the vibrator arm 13 is 20 ° to 85 °, and a chamfer is provided at an end far from the balun arm 12.
According to one embodiment of the invention, the unit body 1 is formed in one step by adopting ADC 12 aluminum alloy die casting, and the surface is treated by adopting an oxidation process.
According to one embodiment of the invention, the support bracket 3 and the limit bracket 4 are both integrally injection-molded parts.
According to another aspect of the present invention there is provided an antenna comprising a radiating element as claimed in any one of claims 1 to 9.
According to the invention, through two positioning of the supporting bracket and the limiting bracket, the positioning of the feed sheet is more stable, the isolation degree is higher, and the consistency of the relative positions of the feed sheets is effectively improved; the supporting bracket and the limiting bracket are integrally molded, so that the assembly workload of the radiation unit is reduced; the arrangement of the gain board widens the frequency band of the radiation unit, and improves the beam width balance; the unit body realizes an electroplating-free process by a coupling feed mode; through the cross guide piece, the frequency band expansion and the control of the horizontal plane beam width are further realized; the unit gasket enables the insulation isolation degree between the whole radiating unit and the reflecting plate to be better; the special-shaped arrangement of the gain board is more suitable for the die-casting processing technology of the radiation unit, and the radiation unit is more convenient to mount and dismount.
Drawings
Fig. 1 is a schematic diagram of an ultra-wideband dual-polarized LTE antenna radiating element;
FIG. 2 is a schematic view of a spacing bracket;
FIG. 3 is a schematic view of the base plate corresponding to the stopping table;
FIG. 4 is a schematic view of a radiating element comprising a cross-director sheet;
FIG. 5 is a schematic illustration of the relative positions of the cell pads and cell body;
FIG. 6 is a horizontal plane simulation of the present invention;
FIG. 7 is a horizontal plane simulation after the gain plate is eliminated in accordance with the present invention;
FIG. 8 is a return loss simulation of the present invention;
fig. 9 is a graph of a return loss simulation of the present invention after the gain board is removed.
Detailed Description
In the following detailed description of the preferred embodiments of the invention, reference is made to the accompanying drawings that form a part hereof, and in which is shown by way of illustration, specific features of the invention, such that the advantages and features of the invention may be more readily understood and appreciated. The following description is an embodiment of the claimed invention, and other embodiments related to the claims not specifically described also fall within the scope of the claims.
Fig. 1 shows a schematic diagram of an ultra-wideband dual-polarized LTE antenna radiating element.
As shown in fig. 1, a radiation unit of an ultra-wideband dual-polarized LTE antenna includes a unit body 1, a feed sheet 2, and a support bracket 3, where the unit body 1 includes a bottom plate 11, four balun arms 12, and four oscillator arms 13, and the bottom plate 11 is provided with two through holes; the four balun arms 12 are arranged around the bottom plate 11 at intervals and extend upwards from the edge of the bottom plate 11 to form an accommodating cavity, and gaps are arranged between the adjacent balun arms 12; the upper ends of the four balun arms 12 are respectively and correspondingly connected with vibrator arms 13 extending outwards; the vibrator arm 13 is in a trapezoid sheet shape, the lower bottom of the trapezoid is connected with the balun arm 12, and the trapezoid extends outwards to the upper bottom of the trapezoid; the opposite vibrator arms 13 are grouped in pairs, and each group of vibrator arms 13 is arranged orthogonally; the upper surface of the vibrator arm 13 is provided with a gain plate 14 vertical to the plane of the vibrator arm 13; the feed tabs 2 comprise a first feed tab and a second feed tab, each feed tab 2 is in an inverted U shape and comprises a first vertical part 21, a second vertical part 22 and a horizontal part 23 connecting the first vertical part 21 and the second vertical part 22, the first vertical part 21 is longer than the second vertical part 22, and the first feed tab and the second feed tab are orthogonally arranged; the supporting bracket 3 comprises a supporting platform 31, an upper buckle 32 and a lower buckle 33, the supporting platform 31 is matched with the upper port of the unit body 1, the upper buckle 32 is arranged on the upper surface of the supporting platform 31, the lower buckle 33 is arranged on the lower surface of the supporting platform 31, the upper buckle 32 and the lower buckle 33 are orthogonally arranged, and the supporting platform 31 further comprises a through hole for the first vertical part 21 and the second vertical part 22 of the first feeding piece to pass through; the first vertical portion 21 and the second vertical portion 22 of the first feeding tab pass through the through holes of the supporting platform 31, the horizontal portion 23 of the first feeding tab is clamped in the upper clamp 32, the horizontal portion 23 of the second feeding tab is clamped in the lower clamp 33, and the supporting bracket 3 is mounted at the upper port of the unit body 1, so that the feeding tabs 2 are disposed inside the unit body 1, and the first vertical portions 21 of the two feeding tabs 2 extend out of the two through holes of the bottom plate 11.
The unit body 1 is formed by combining the balun arms 12 and the oscillator arm 13 and integrally die-casting, and the gaps between the adjacent balun arms 12 form isolation between the balun arms 12. The four vibrator arms 13 form a receiving cavity for receiving the feeding plate 2. When the vibrator arm 13 extends outwards from the upper end of the balun arm 12, the vibrator arm extends in a direction away from the accommodating cavity, for example, if the cross section of the accommodating cavity is circular, the vibrator arm 13 extends in a direction away from the center of a circle, if the cross section of the accommodating cavity is square, the balun arm 12 is four sides of the positive direction, and the vibrator arm 13 extends in a direction away from the geometric center of the square and is perpendicular to the balun arm 12. The dipole arm 13 may extend in a direction perpendicular to the balun arm 12, but may also be adjusted by a small angle, and the dipole arm 13 preferably extends in a direction perpendicular to the balun arm 12. In the present invention, the four vibrator arms 13 extend in four directions, two of the four vibrator arms 13 extend in opposite directions, and the other two vibrator arms 13 extend in opposite directions, so that the two vibrator arms 13 extending in opposite directions form a group, and the connecting line of each group of vibrator arms 13 is perpendicular to the connecting line of the other group of vibrator arms 13.
In the present invention, the vibrator arm 13 is a sheet, and the upper and lower surfaces thereof are trapezoidal, and parallel to the bottom surface, and has the function of guiding and amplifying electromagnetic waves, so that electromagnetic signals received or transmitted by the antenna are stronger.
The gain plate 14 is perpendicular to the upper surface of the oscillator arm 13, and is used for widening the frequency and bandwidth of the radiation unit and improving the balance of the beam width, and the size and shape of the gain plate can be set according to the requirement of adjusting the frequency and bandwidth.
In the invention, the double-fed sheet 2 is arranged in a polarization cross mode, the first feeding sheet is arranged above the second feeding sheet, and the relative position between the first feeding sheet and the second feeding sheet is fixed and the horizontal part 23 is isolated by the supporting bracket 3.
The first vertical portion 21 is a longer portion of two vertical portions of the U-shaped feeding tab 2, and the first vertical portion 21 needs to extend from the unit body 1 to the outside of the bottom plate 11 of the unit body 1 for feeding.
Both the upper and lower faces of the support bracket 3 are shown in figure 1.
When the feeding piece 2 is installed, the first feeding piece is first placed in an inverted U shape and installed downward from the upper surface of the supporting bracket 3, so that the first vertical portion 21 and the second vertical portion 22 of the first feeding piece pass through the two through holes of the supporting bracket 31, and the first vertical portion 21 and the second vertical portion 22 continue to extend downward. As the mounting is performed, the horizontal portion 23 of the first feeding tab enters the upper hook 32 and is engaged with the upper surface of the support base 31 by the upper hook 32, and the mounting of the first feeding tab is completed.
When the second feeding piece is mounted, the second feeding piece is placed in an inverted U shape, and is mounted upward from below the supporting table 31, so that the horizontal portion 23 of the second feeding piece is engaged with the lower surface of the supporting table 31 by the lower engaging member 33, and the upper engaging member 32 and the lower engaging member 33 are orthogonally disposed, so that the first feeding piece and the second feeding piece are also orthogonally disposed after the mounting.
In the invention, the upper fastener 32 and the lower fastener 33 are used for positioning the first feeding sheet and the second feeding sheet, and the support table 31 is used for insulating and isolating the horizontal parts 23 of the first feeding sheet and the second feeding sheet, so that the radiation unit has good electrical performance and radiation performance, and a guarantee is provided.
Finally, the support bracket 3 mounted with the feed tab 2 is mounted at the upper port of the unit body 1 even if the feed tab 2 is placed in the accommodation chamber.
In the present invention, the length of the first vertical portion 21 is set such that the first vertical portion 21 can still extend from the bottom plate 11 of the unit body 1 as a feeding end after the supporting bracket 3 and the unit body 1 are assembled.
The two through holes of the bottom plate 11 correspond to the first vertical portions 21 of the first and second feeding tabs, respectively, so as to protrude out of the unit body 1.
The unit body 1 and the feeding sheet 2 adopt a coupling feeding mode, signals are emitted outwards by the oscillator arm 13, and the frequency band of the radiation unit is widened by the gain plate 14. Moreover, the structure of the radiating element determines the way of coupling feed, so that the element body 1 realizes the electroplating-free process.
Figure 2 shows a schematic view of a spacing bracket.
As shown in fig. 2, the radiation unit further includes a limiting bracket 4, and the limiting bracket 4 is located inside the unit body 1 and is disposed close to the bottom plate 11; the limiting support 4 comprises a limiting table 41, and the periphery of the limiting table 41 is attached to the accommodating cavity; the upper surface of the limit table 41 is provided with two upper bosses 42 extending upwards, the lower surface is provided with two lower bosses 43 extending downwards, and the periphery of the limit table 41 is provided with four positioning blocks 44; the two upper bosses 42 are respectively provided with a blind hole, and the blind holes respectively correspond to the second vertical part 22 of the first feed sheet and the second vertical part 22 of the second feed sheet, so that the second vertical part 22 is limited; the two lower bosses 43 are provided with through holes penetrating through the lower bosses 43 and the limiting table 41, and correspondingly accommodate the first vertical parts 21 of the first feeding pieces and the first vertical parts 21 of the second feeding pieces respectively, and the first vertical parts 21 penetrate through the lower bosses 43 and extend downwards to form the limiting of the first vertical parts 21; the two lower bosses 43 penetrate through the two through holes on the bottom plate 11, so that the limiting table 41 is attached to the bottom plate 11; the positioning blocks 44 are respectively engaged with gaps between the balun arms 12, and are used for fixing the positioning bracket inside the unit body 1.
In fig. 2, the left side is a perspective view, and the right side is a top view and a bottom view.
The positioning between the limiting support 4 and the unit body 1 depends on the positioning block 44, the positioning block 44 is embedded in a gap formed between the balun arms 12, so that the relative position between the limiting support 4 and the unit body 1 is fixed, the periphery of the limiting table 41 is attached to the accommodating cavity, and the positioning between fibers and between the unit bodies 1 is further realized.
The upper bosses 42 on the upper surface of the limiting table 41 respectively accommodate the second vertical parts 22 of the two feeding sheets 2, and the lower bosses 43 formed on the lower surface of the limiting table 41 respectively accommodate the first vertical parts 21 of the two feeding sheets 2, so that the relative positions of the corresponding upper bosses 42 and the corresponding lower bosses 43 are fixed due to the fixed relative positions of the first vertical parts 21 and the second vertical parts 22 of each feeding sheet 2. Since the first feeding tab is disposed orthogonally to the second feeding tab, the connecting line between the upper boss 42 and the lower boss 43 corresponding to one group is also disposed orthogonally to the other group.
The shapes of the upper boss 42 and the lower boss 43 may be variously selected, for example, a rectangular parallelepiped, a cylinder, a cone, and the like. In the present invention, it is preferable that the lower boss 43 is cylindrical, and the diameter of the cylinder of the lower boss 43 is the same as the diameter of the through hole formed at the bottom of the unit body 1, so that the lower boss 43 and the through hole can be tightly attached, and the limit of the feed tab 2 is more stable.
The lower boss 43 and the limiting table 41 are provided with through holes penetrating through the lower boss 43 and the limiting table 41, so that the second vertical portion 22 passes through the through holes and extends to the outside of the lower boss 43. That is, the lower boss 43 extends from the through hole of the bottom plate 11 to the outside of the unit body 1, and the second vertical portion 22 extends from the through hole of the lower boss 43 to the outside of the lower boss 43, so that the outside can directly contact the end of the second vertical portion 22 for feeding.
According to the invention, the bottom ends of the feed plates 2 are limited by the limiting support 4, and isolation and insulation among the feed plates 2 are realized, and the feed plates are matched with the supporting support 3, so that the feed plates 2 are limited from the horizontal part 23 to the first vertical part 21 and the second vertical part 22, and are isolated in an insulation manner, and a guarantee is provided for forming good electrical performance and radiation performance of the radiation unit.
Fig. 3 shows a schematic view of the base plate corresponding to the stopping table.
As shown in fig. 3, the bottom plate 11 of the unit body 1 is provided with a screw hole, and the position limiting table 41 is provided with a screw hole corresponding to the screw hole, for fixing the position limiting table 41 on the bottom plate 11 by using a screw.
The invention adopts screws to fix the limiting table 41 on the bottom plate 11, and further limits the position of the limiting bracket 4, so that the position of the feed sheet 2 in the feed unit is more stable.
The connection between the position limiting table 41 and the bottom plate 11 may be performed by other methods such as riveting, clamping, and the like.
Fig. 4 shows a schematic view of a radiating element comprising a cross-director sheet.
As shown in fig. 4, the radiation unit further comprises a cross-guide plate 5, and the cross-guide plate 5 is mounted on the support bracket 3; the support bracket 3 further comprises four support columns 34, the support columns 34 extend upwards from the edge of the support table 31, and the top ends of the support columns 34 are provided with mounting positions for mounting the cross-shaped guide piece 5 and enabling the cross-shaped guide piece 5 to correspond to the directions of the two orthogonally arranged vibrator arms 13; the cross guide 5 is located above the vibrator arm 13 by being mounted on the support column 34, for realizing band broadening and controlling horizontal plane beam width.
In the present invention, the connecting line of the two sets of vibrator arms 13 is an orthogonal cross, and if the cross guide piece 5 is overlapped with it when viewed from the top. The four support struts 34 provide, on the one hand, a mounting location for the cross guide plate 5 and, on the other hand, determine the distance between the cross guide plate 5 and the vibrator arm 13.
The cross guide plate 5 and the top end of the support pillar 34 can adopt various connecting modes of the prior art or the future invention, for example, a spiral hole is arranged at the top end of the support pillar 34, a mounting hole is also arranged at the position corresponding to the cross guide plate 5, and the cross guide plate 5 and the support pillar 34 are fixed by bolts.
The support columns 34 can also be in other numbers, such as three or five, preferably four according to the invention, corresponding to each sheet of the cross-guide 5.
Fig. 5 shows a schematic view of the relative positions of the cell pads and the cell body.
As shown in fig. 5, the radiation unit further includes a unit spacer 6, and the unit spacer 6 is mounted on a lower bottom surface of the bottom plate 11 of the unit body 1 and used for performing an insulation process on the unit body 1.
The unit gasket 6 can be mounted on the bottom surface of the bottom plate 11 of the unit body 1 in various forms such as sticking, clamping and the like, for example, mounting holes are formed in the unit gasket 6 and the bottom plate 11, and the unit gasket and the bottom plate are fixed by bolts.
The radiating element is typically mounted on a reflector plate in use, and the element pads 6 provide insulation between the radiating element and the reflector plate, thereby providing improved intermodulation.
According to an embodiment of the present invention, two sets of upper clips 32 of the supporting bracket 3 are respectively clipped on the horizontal portion 23 of the first feeding piece; the horizontal portion 23 of the first feeding tab is provided with a protrusion extending to both sides between the two sets of upper catches 32.
The upper clips 32 and the lower clips 33 may be one or more sets, and when the upper clips 32 are two sets, on one hand, the horizontal portion 23 is engaged, and on the other hand, the protrusions of the horizontal portion 23 towards both sides are clamped by the two sets of upper clips 32 in the longitudinal direction, so that the feeding tab 2 is further limited.
As shown in fig. 1, the gain plate 14 is shaped like a fin, and is inclined at one end close to the balun arm 12, the included angle between the inclined surface and the upper surface of the vibrator arm 13 ranges from 20 ° to 85 °, and a chamfer is arranged at one end far from the balun arm 12.
The arrangement of the special shape of the gain plate 14 enables the opening of the cavity to be in a horn shape gradually increasing outwards due to the inclined plane of the gain plate 14 on the side close to the balun arm 12 when the supporting bracket 3 is installed between the unit bodies 1, so that the support can be guided to be aligned with the cavity, and the assembly is convenient. When the radiation unit of the invention is overhauled, the support bracket 3 is also convenient to take out.
According to one embodiment of the invention, the unit body 1 is formed in one step by adopting ADC 12 aluminum alloy die casting, and the surface is treated by adopting a cleaning oxidation process.
According to one embodiment of the invention, the support bracket 3 and the limit bracket 4 are both integrally injection-molded parts.
According to another aspect of the present invention, there is provided an antenna comprising a radiating element as defined in any one of the above claims.
Example 1.
FIG. 6 illustrates a water level simulation diagram of the present invention;
fig. 7 shows a water level simulation diagram after the gain plate is eliminated by the present invention.
The simulation frequency points are three high, medium and low frequency points in three frequency bands of an LTE frequency band F, A, D.
Wherein, when the frequency range is 1.885GHz-2.025GHz, the ideal horizontal beam width approaches about 90 °, and when the frequency range is 2.575GHz-2.675GHz, the ideal horizontal beam width approaches about 65 °.
It can be seen from the above horizontal plane simulation diagram that the horizontal beam width is relatively discrete after the gain board 14 is cancelled, and when the frequency range is from 1.885GHz to 2.025GHz, the horizontal plane beam width is 88.3 to 103.0 °, and when the frequency range is from 2.575GHz to 2.675GHz, the horizontal plane beam width is 66.9 to 69.9 °, and the value dispersion is very high.
After the gain board 14 is adopted, the value range of the horizontal plane beam width is 79.5-91.5 degrees and 65.1-65.5 degrees respectively, and the value of the beam width is greatly concentrated.
Example 2.
FIG. 8 shows a return loss simulation of the present invention;
fig. 9 shows a graph of the return loss simulation after the gain board is removed in accordance with the present invention.
As can be seen from fig. 8 and 9, the return loss has a range of-18.20 dB to-33.29 dB after the gain board 14 is used, and has a range of-12.5 dB to-50.0 dB after the gain board 14 is removed. The invention adopts the gain board 14, thus greatly reducing the return loss.
According to the invention, through two positioning of the supporting bracket and the limiting bracket, the positioning of the feed sheet is more stable, the isolation degree is higher, and the consistency of the relative positions of the feed sheets is effectively improved; the supporting bracket and the limiting bracket are integrally molded, so that the assembly workload of the radiation unit is reduced; the arrangement of the gain board widens the frequency band of the radiation unit, and improves the beam width balance; the unit body realizes an electroplating-free process by a coupling feed mode; through the cross guide piece, the frequency band expansion and the control of the horizontal plane beam width are further realized; the unit gasket enables the insulation isolation degree between the whole radiating unit and the reflecting plate to be better; the special-shaped arrangement of the gain board is more suitable for the die-casting processing technology of the radiation unit, and the radiation unit is more convenient to mount and dismount.
In the invention, the feed mode design of the radiation unit is as follows: the unit body and the feed plate 2PIN needle adopt a coupling feed mode, and the coupling feed mode is also adopted between the unit body and the radiation bottom plate, so that the design can completely realize the electroplating-free process of the unit body. Meanwhile, the radiation unit has good electrical performance and radiation performance, high reliability, simple process, low cost, easy realization of mass production and good market application prospect.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim.
Claims (10)
1. A radiation unit of an ultra-wideband dual-polarized LTE antenna comprises a unit body (1), a feed sheet (2) and a support bracket (3),
the unit body (1) comprises a bottom plate (11), four balun arms (12) and four vibrator arms (13),
the bottom plate (11) is provided with two through holes,
the four balun arms (12) are arranged around the bottom plate (11) at intervals and extend upwards from the edge of the bottom plate (11) to form a containing cavity, and gaps are arranged between the adjacent balun arms (12); the upper ends of the four balun arms (12) are respectively and correspondingly connected with vibrator arms (13) extending outwards; the vibrator arm (13) is in a trapezoid sheet shape, the lower bottom of the trapezoid is connected with the balun arm (12) and extends outwards to the upper bottom of the trapezoid; the opposite vibrator arms (13) are grouped in pairs, and each group of vibrator arms (13) is arranged orthogonally; the upper surface of the vibrator arm (13) is provided with an additional board (14) which is vertical to the plane of the vibrator arm (13);
the feeding sheet (2) comprises a first feeding sheet and a second feeding sheet, each feeding sheet (2) is in an inverted U shape and comprises a first vertical part (21), a second vertical part (22) and a horizontal part (23) connecting the first vertical part (21) and the second vertical part (22), the length of the first vertical part (21) is greater than that of the second vertical part (22), and the first feeding sheet and the second feeding sheet are orthogonally arranged;
the supporting bracket (3) comprises a supporting platform (31), an upper buckle (32) and a lower buckle (33), the supporting platform (31) is matched with an upper port of the unit body (1), the upper buckle (32) is arranged on the upper surface of the supporting platform (31), the lower buckle (33) is arranged on the lower surface of the supporting platform (31), the upper buckle (32) and the lower buckle (33) are orthogonally arranged, and the supporting platform (31) further comprises a through hole for enabling the first vertical part (21) and the second vertical part (22) of the first feeding sheet to pass through;
the first vertical part (21) and the second vertical part (22) of the first feed piece penetrate through holes in the supporting table (31), the horizontal part (23) of the first feed piece is clamped in the upper clamp buckle (32), the horizontal part (23) of the second feed piece is clamped in the lower clamp buckle (33), and the supporting bracket (3) is installed at the upper port of the unit body (1), so that the feed pieces (2) are arranged in the unit body (1), and the first vertical parts (21) of the two feed pieces (2) extend out of the two through holes of the bottom plate (11).
2. The radiant unit according to claim 1, further comprising a spacing bracket (4), said spacing bracket (4) being located inside said unit body (1), being arranged close to said bottom plate (11);
the limiting support (4) comprises a limiting table (41), and the periphery of the limiting table (41) is attached to the accommodating cavity;
the upper surface of the limiting table (41) is provided with two upper bosses (42) extending upwards, the lower surface of the limiting table is provided with two lower bosses (43) extending downwards, and the periphery of the limiting table (41) is provided with four positioning blocks (44);
blind holes are formed in the two upper bosses (42) and respectively correspond to the second vertical part (22) of the first feed sheet and the second vertical part (22) of the second feed sheet, so that the second vertical part (22) is limited;
the two lower bosses (43) are provided with through holes penetrating through the lower bosses (43) and the limiting table (41), the through holes respectively correspondingly accommodate a first vertical part (21) of the first feeding piece and a first vertical part (21) of the second feeding piece, and the first vertical parts (21) penetrate through the lower bosses (43) to extend downwards to form limiting on the first vertical parts (21);
the two lower bosses (43) penetrate through the two through holes in the bottom plate (11) to enable the limiting table (41) to be attached to the bottom plate (11);
the positioning blocks (44) are respectively clamped in gaps between the balun arms (12) and used for fixing the positioning support inside the unit body (1).
3. The radiant unit according to claim 1, the bottom plate (11) of the unit body (1) is provided with a screw hole, and the position-limiting table (41) is provided with a screw hole corresponding to the screw hole for fixing the position-limiting table (41) on the bottom plate (11) using a screw.
4. The radiant unit according to claim 1, further comprising a cross-guide plate (5), said cross-guide plate (5) being mounted on said support bracket (3);
the supporting bracket (3) further comprises four supporting columns (34), the supporting columns (34) extend upwards from the edge of the supporting platform (31), and mounting positions are arranged at the top ends of the supporting columns (34) and used for mounting the cross guide pieces (5) and enabling the cross guide pieces (5) to correspond to the directions of the two groups of vibrator arms (13) which are orthogonally arranged;
the cross-shaped guide sheet (5) is arranged above the vibrator arm (13) by being mounted on the support column (34) and is used for realizing frequency band expansion and controlling horizontal plane beam width.
5. The radiating element according to claim 1, further comprising an element pad (6), the element pad (6) being mounted on a lower bottom surface of the bottom plate (11) of the element body (1) for insulating the element body (1).
6. The radiating element according to claim 1, wherein there are two sets of upper clips (32) between the supports, each clip on the horizontal portion (23) of the first feeding piece;
the horizontal part (23) of the first feeding sheet is provided with protrusions which are clamped by two groups of upper buckles (32) and extend towards two sides.
7. The radiating element according to claim 1, the gain plate (14) being fin-shaped, having a bevel at one end near the balun arm (12), the bevel having an angle in the range of 20 ° to 85 ° with the upper surface of the vibrator arm (13), and having a chamfer at the end remote from the balun arm (12).
8. The radiant unit according to claim 1, wherein the unit body (1) is formed in one step by adopting ADC 12 aluminum alloy die casting, and the surface is treated by adopting an oxidation process.
9. The radiant unit according to claim 2, wherein the support bracket (3) and the limit bracket (4) are all integrally injection-molded parts.
10. An antenna comprising a radiating element according to any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910872433.9A CN110676561A (en) | 2019-09-16 | 2019-09-16 | Radiating element and antenna of ultra-wideband dual-polarized LTE antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910872433.9A CN110676561A (en) | 2019-09-16 | 2019-09-16 | Radiating element and antenna of ultra-wideband dual-polarized LTE antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110676561A true CN110676561A (en) | 2020-01-10 |
Family
ID=69077937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910872433.9A Pending CN110676561A (en) | 2019-09-16 | 2019-09-16 | Radiating element and antenna of ultra-wideband dual-polarized LTE antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110676561A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116404416A (en) * | 2023-05-23 | 2023-07-07 | 江苏亨鑫科技有限公司 | Feed assembly with U-shaped structure and antenna unit |
| CN117791087A (en) * | 2024-02-26 | 2024-03-29 | 泰州苏中天线集团有限公司 | GNSS antenna and manufacturing method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103367883A (en) * | 2013-07-24 | 2013-10-23 | 常熟泓淋电子有限公司 | Dual-polarized broadband TD (Time Division) antenna radiating unit |
| EP3093919A1 (en) * | 2012-11-22 | 2016-11-16 | CommScope Technologies LLC | Ultra-wideband dual-band cellular basestation antenna |
-
2019
- 2019-09-16 CN CN201910872433.9A patent/CN110676561A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3093919A1 (en) * | 2012-11-22 | 2016-11-16 | CommScope Technologies LLC | Ultra-wideband dual-band cellular basestation antenna |
| CN103367883A (en) * | 2013-07-24 | 2013-10-23 | 常熟泓淋电子有限公司 | Dual-polarized broadband TD (Time Division) antenna radiating unit |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116404416A (en) * | 2023-05-23 | 2023-07-07 | 江苏亨鑫科技有限公司 | Feed assembly with U-shaped structure and antenna unit |
| CN116404416B (en) * | 2023-05-23 | 2023-12-22 | 江苏亨鑫科技有限公司 | Feed assembly with U-shaped structure and antenna unit |
| CN117791087A (en) * | 2024-02-26 | 2024-03-29 | 泰州苏中天线集团有限公司 | GNSS antenna and manufacturing method thereof |
| CN117791087B (en) * | 2024-02-26 | 2024-06-04 | 泰州苏中天线集团有限公司 | GNSS antenna and manufacturing method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20200280138A1 (en) | Low cost electromagnetic feed network | |
| CN104900987B (en) | A kind of broadband radiating unit and aerial array | |
| US6246368B1 (en) | Microstrip wide band antenna and radome | |
| US10008768B2 (en) | Capacitively shielded housing, in particular capacitively shielded component housing for an antenna device | |
| WO2021103748A1 (en) | Dielectric phase shifter | |
| US20130088402A1 (en) | Antenna assemblies having transmission lines suspended between ground planes with interlocking spacers | |
| CN108155473B (en) | Feed structure and base station antenna | |
| CN110676561A (en) | Radiating element and antenna of ultra-wideband dual-polarized LTE antenna | |
| CN110197950B (en) | Dual polarized antenna | |
| EP4248523A1 (en) | A wireless transceiver having a high gain antenna arrangement | |
| CN110323558B (en) | Broadband dipole | |
| US11145972B2 (en) | Antenna oscillator and antenna | |
| CN110931951B (en) | Die-casting radiation device and base station array antenna | |
| CN112886188A (en) | Integrated air medium radiation unit and antenna base station | |
| CN220233471U (en) | Broadband horn antenna | |
| CN111555013A (en) | Radiation unit and base station antenna | |
| KR101092628B1 (en) | Cable fixed device, board installing the same, and antenna structure including the same | |
| CN110011041B (en) | Novel mobile communication base station antenna device based on 3D medium printing | |
| CN220042298U (en) | Antenna array and antenna device | |
| JP2737939B2 (en) | Planar array antenna | |
| CN215266630U (en) | Integrated air medium radiation unit and antenna base station | |
| CN219086244U (en) | PCB panel directional antenna with 2.4GHz frequency band | |
| CN220544239U (en) | Antenna and electronic equipment | |
| CN210576422U (en) | Broadband dual-polarized oscillator | |
| WO2023207343A1 (en) | Antenna, communication device and base station |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200110 |
|
| RJ01 | Rejection of invention patent application after publication |