CN111883921A - Wide-bandwidth beam medium-filled horn antenna - Google Patents
Wide-bandwidth beam medium-filled horn antenna Download PDFInfo
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- CN111883921A CN111883921A CN202010773874.6A CN202010773874A CN111883921A CN 111883921 A CN111883921 A CN 111883921A CN 202010773874 A CN202010773874 A CN 202010773874A CN 111883921 A CN111883921 A CN 111883921A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/02—Waveguide horns
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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
- H01Q1/36—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
Abstract
The invention discloses a wide-bandwidth beam medium filled horn antenna, which comprises a rectangular column horn antenna, a feed body arranged below the horn antenna, and a baseplate seat for installing and fixing the horn antenna and the feed body. The wide-bandwidth beam medium filled horn antenna has the advantages of small volume, strong structural stability, high low elevation gain of the antenna and strong radiation capability of the antenna.
Description
Technical Field
The invention belongs to the field of horn antennas, and particularly relates to a wide-bandwidth beam medium filled horn antenna.
Background
The existing horn antenna has lower gain at low elevation angle, smaller beam width of the antenna and poorer axial ratio of the antenna in a full airspace, thus being not beneficial to realizing the tracking and positioning function of the full airspace;
the feed network of the existing horn antenna is unreasonable in design and cannot effectively realize the circular polarization of the antenna;
meanwhile, the horn antenna also has the problems of large volume and poor structural stability, which are also the problems to be considered by a horn antenna designer.
Therefore, how to make the horn antenna achieve small volume, stable structure, and simultaneously have higher antenna radiation capability and antenna low elevation gain is a technical problem to be solved by those skilled in the art.
Disclosure of Invention
The invention mainly solves the technical problem of providing a wide-bandwidth beam medium filled horn antenna, and solves the problems of large volume, poor structural stability, low elevation gain and low antenna radiation capability of the horn antenna in the prior art.
In order to solve the technical problem, the technical scheme adopted by the invention is to provide a wide-bandwidth beam medium-filled horn antenna, which comprises a rectangular cylindrical horn antenna, a feed body arranged below the horn antenna, and a baseplate seat for installing and fixing the horn antenna and the feed body.
In another embodiment of the wide bandwidth beam medium-filled horn antenna of the present invention, the horn antenna includes a hollow rectangular cylinder with a square cross section and surrounded by four equal-side-length peripheral walls, and a polyimide solid filler is completely filled in the hollow rectangular cylinder.
In another embodiment of the wide bandwidth beam medium-filled horn antenna of the present invention, the feeder includes a planar dielectric slab, a feed network formed by microstrip lines is laid on an upper surface of the dielectric slab, the feed network includes a T-junction and two bridge assemblies divided by the T-junction, each of the two bridge assemblies includes two support arms, the two support arms are coupled by a bridge, and the support arms extend to a bottom surface of the horn antenna.
In another embodiment of the wide bandwidth beam medium filled feedhorn of the present invention, the bridge is a quarter wavelength and square shaped rectangular coupled four-arm bridge.
In another embodiment of the wide bandwidth beam medium filled horn antenna of the present invention, the T-junction is disposed at one side edge of the dielectric plate, the T-junction includes an interface end, a T-junction trunk line extends from the interface end and parallel to the side edge of the dielectric plate, two T-junction branch lines branch from the T-junction trunk line, and each T-junction branch line is connected to one of the bridge assemblies.
In another embodiment of the wide bandwidth beam medium filled feedhorn of the present invention, said bridge assembly comprises a first bridge assembly and a second bridge assembly, the T-junction leg comprises a first T-junction leg and a second T-junction leg, the first bridge assembly comprises a first connecting line, the first connecting line extends from an end of the first T-junction branch line toward a center of the dielectric plate, and connecting one of the rectangular coupling four-arm bridges, from which a first arm and a second arm extending toward the center of the dielectric plate branch off, the first support arm is L-shaped, the second support arm is reverse L-shaped, the first support arm and the second support arm form an unclosed square, and a space is arranged between the tail end of the first support arm extending towards the center of the medium plate and the tail end of the second support arm extending towards the center of the medium plate.
In another embodiment of the wide bandwidth beam medium-filled horn antenna of the present invention, the second bridge assembly includes a second connection line, the second connection line extends from the end of the second T-junction branch toward the center of the dielectric plate and connects to one of the rectangular coupling four-arm bridges, a third arm and a fourth arm branch off from the rectangular coupling four-arm bridge and extend toward the center of the dielectric plate, the third arm is L-shaped, the fourth arm is reverse L-shaped, the third arm and the fourth arm form an unclosed square, and a space is provided between the end of the third arm extending toward the center of the dielectric plate and the end of the fourth arm extending toward the center of the dielectric plate.
In another embodiment of the wide bandwidth beam medium-filled horn antenna of the present invention, openings are formed at the bottoms of the four side surfaces of the horn antenna, through which the first arm, the second arm, the third arm, and the fourth arm pass, and fixing pieces for fixing the horn antenna on the dielectric plate are further provided at the bottom ends of the four side surface combining positions of the horn antenna.
In another embodiment of the wide bandwidth beam medium-filled horn antenna of the present invention, a supporting cavity is disposed on the bottom plate seat, the supporting cavity is disposed below the horn antenna and corresponds to the horn antenna in an up-down position, and an antenna connector is disposed on the lower surface of the dielectric plate and corresponds to an interface end of the T-shaped junction in an up-down position.
In another embodiment of the wide-bandwidth wide-beam medium filled horn antenna, the working frequency band of the wide-bandwidth wide-beam medium filled horn antenna is 6.3GHz to 8.6GHz, the side length of the horn antenna is 25mm, and the wall thickness of the hollow rectangular cylinder is 2 mm.
The invention has the beneficial effects that: the invention discloses a wide-bandwidth beam medium filled horn antenna, which comprises a rectangular column horn antenna, a feed body arranged below the horn antenna, and a baseplate seat for installing and fixing the horn antenna and the feed body. The wide-bandwidth beam medium filled horn antenna has the advantages of small volume, strong structural stability, high low elevation gain of the antenna and strong radiation capability of the antenna.
Drawings
FIG. 1 is a schematic diagram of an embodiment of a broadband wide-beam dielectric-filled horn antenna of the present invention;
figure 2 is an exploded view of another embodiment of the wide bandwidth beam dielectric filled horn antenna of the present invention;
figure 3 is a schematic diagram of a feed in another embodiment of the wide bandwidth beam dielectric filled horn antenna of the present invention;
FIG. 4 is a partially enlarged view of portion A of the embodiment shown in FIG. 3;
FIG. 5 is a partially enlarged view of portion B of the embodiment shown in FIG. 3;
FIG. 6 is a standing wave diagram of another embodiment of a broadband wide beam dielectric filled feedhorn according to the present invention;
figure 7 is a 3D pattern diagram of another embodiment of a wide bandwidth beam dielectric filled horn antenna of the present invention;
fig. 8 is a section gain pattern of another embodiment Phi 0 ° and 90 ° of the broadband wide beam dielectric filled horn antenna of the present invention;
fig. 9 is a diagram of axial ratio Phi of 0 ° and 90 ° in another embodiment of the broadband wide-beam dielectric filled horn antenna of the present invention.
Detailed Description
In order to facilitate an understanding of the invention, the invention is described in more detail below with reference to the accompanying drawings and specific examples. 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 is to be noted that, 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.
In the drawings, arrow X indicates the front side, arrow Y indicates the right side, arrows X and Y indicate the horizontal direction, and arrow Z indicates the vertical direction, i.e., the height direction, i.e., the vertical direction.
As shown in fig. 1, the broadband wide-beam dielectric-filled horn antenna comprises a rectangular-cylinder horn antenna 1, a feeder 2 arranged below the horn antenna 1, and a baseplate base 3 for fixedly mounting the horn antenna 1 and the feeder 2. The base plate seat 3 is used for fixing the feed body 2 and the horn antenna 1 on the base plate seat 3, so that the overall stability of the wide-bandwidth beam medium filled horn antenna is enhanced, and the disassembly and assembly of the horn antenna are convenient.
Preferably, with reference to fig. 1 and 2, the horn antenna 1 includes a hollow rectangular column 11 having a square cross section and surrounded by four equal-length peripheral walls, and the hollow rectangular column 11 is completely filled with a polyimide solid filler 12, and has a dielectric constant of 3.6 and a loss tangent of 0.006. The hollow rectangular column 11 is completely filled with the polyimide solid filler 12, that is, the rectangular waveguide is completely filled with the medium (the polyimide solid filler is selected in the embodiment), so that the gain of the antenna at a low elevation angle is increased, the antenna beam is widened, the radiation capability of the antenna is effectively improved, the axial ratio of the antenna in a full airspace is more ideal, the tracking and positioning function in the full airspace can be realized, and the gain of the horn antenna in the axial +/-70-degree range is larger than-2 dBi.
Preferably, the working frequency band of the broadband wide-beam medium filled horn antenna is 6.3 GHz-8.6 GHz, the side length of the horn antenna is 25mm, and the wall thickness of the hollow rectangular cylinder is 2 mm.
Preferably, with reference to fig. 1, fig. 2 and fig. 3, the feed body 2 includes a planar dielectric plate 21, a feed network formed by microstrip lines is laid on the upper surface of the dielectric plate 21, the feed network includes a T-junction 22 and two bridge assemblies divided by the T-junction 22, each of the two bridge assemblies includes two support arms, the two support arms are coupled by a bridge, extend to the bottom surface of the horn antenna 1, and directly contact with the polyimide solid filler 12, so as to excite the antenna, thereby realizing coupled feeding of the horn antenna.
With reference to fig. 1, 2, 3, and 5, the T-junction 22 is disposed at one side edge of the dielectric plate 21, the T-junction 22 includes an interface end 221, a T-junction trunk 222 extends from the interface end 221 and parallel to the side edge of the dielectric plate, two T-junction branches are branched from the T-junction trunk 222, each T-junction branch is connected to one of the bridge assemblies, the T-junction trunk 222 includes a first T-junction branch 223 and a second T-junction branch 224, the T-junction trunk 222 is a step-shaped microstrip line, and has three microstrip lines with different thicknesses, the widths of which are sequentially increased from the interface end 221, in this embodiment, the first T-junction branch 223 and the second T-junction branch 224 are two microstrip lines with a thickness of 50 Ω, and after the two microstrip lines are combined in parallel (the resistance becomes 25 Ω), the two microstrip lines reach the interface end 221 through the three microstrip lines with different thicknesses, the three microstrip lines with different thicknesses play a role in resistance transition, and finally the microstrip line reaching the interface end 221 becomes 50 omega.
Further preferably, with reference to fig. 3 and 5, the T-junction trunk lines 222 include a first T-junction trunk line 2221, a second T-junction trunk line 2222, and a third T-junction trunk line 2223 with widths from thin to thick, wherein the length of the first T-junction trunk line 2221 is 9.2mm, and the width is 1.22 mm; the second T-junction trunk 2222 has a length of 5.8mm and a width of 1.99 mm; the third T-junction stem 2223 is 5mm in length and 3.25mm in width.
Further preferably, with reference to fig. 3 and 5, a microstrip line opening K1 is disposed at a junction between the first T-junction branch line 223 and the second T-junction branch line 224, specifically, the end of the third T-junction trunk line 2223 is branched to form the first T-junction branch line 223 and the second T-junction branch line 224, the microstrip line opening K1 is opened at the branched position, the microstrip line opening K1 includes two opening oblique sides, which are respectively a first opening oblique side K11 and a second opening oblique side K12, the length of the first opening oblique side K11 is equal to the length of the second opening oblique side K12, the included angle formed by the first opening oblique side K11 and the second opening oblique side K12 is 106 °, and the intersection point of the first opening oblique side K11 and the second opening oblique side K12 is located at the central axis of the third T-junction trunk line 2223, since the microstrip line opening K1 is provided, the microstrip line at the corresponding junction becomes thinner, the impedance is larger, the microstrip line impedance at the position can be adjusted by adjusting the size of the microstrip line opening K1 (i.e. the size of the included angle between the first opening oblique edge K11 and the second opening oblique edge K12 or the length of the first opening oblique edge K11 and the second opening oblique edge K12).
Preferably, with reference to fig. 1, fig. 2 and fig. 3, a supporting cavity 31 is arranged on the bottom plate base 3, the supporting cavity 31 is arranged below the horn antenna 1 and corresponds to the horn antenna 1 in an up-down position, and an antenna connector (not shown) is arranged on the lower surface of the dielectric plate and corresponds to the interface end 221 of the T-shaped junction in an up-down position. Set up this support cavity 31 and can play the supporting role to the horn antenna on the one hand, alleviate the pressure that the fixed horn antenna of bottom plate seat 3 support, on the other hand this support cavity 31 can save electromagnetic field energy, and then can improve the gain of this horn antenna.
It is further preferable that the supporting cavity 31 has an upward opening 311, the vertical height of the supporting cavity is a quarter wavelength, the length of the supporting cavity 31 is equal to the length of the hollow rectangular column 11 (25mm), the width of the supporting cavity 31 is equal to the width of the hollow rectangular column 11 (25mm), and the wall thickness of the supporting cavity 31 is equal to the wall thickness of the hollow rectangular column 11 (2 mm).
Preferably, the supporting cavity 31 is arranged in the center of the base plate seat 3.
Preferably, with reference to fig. 2 and 3, a fixed bottom plate 4 is disposed on the lower surface of the dielectric plate 21, an antenna connector is disposed on the lower surface of the fixed bottom plate 4, the antenna connector corresponds to the interface end 221 of the T-shaped junction in the vertical direction, and the dielectric plate 21 and the fixed bottom plate 4 are fixedly connected by screws, so that the structural firmness of the dielectric plate is enhanced, the dielectric plate is more stable and stable, and the grounding is more sufficient.
Further preferably, as shown in fig. 2, a through hole 41 corresponding to the position of the horn antenna is formed in the fixed base plate 4, the supporting cavity 31 can support the horn antenna by passing through the through hole 41, and the shape of the through hole 41 is adapted to the horizontal cross-sectional shape of the supporting cavity 31.
Further preferably, as shown in fig. 2, the base plate seat 3 is provided with a metal post 32 for fixedly connecting the dielectric plate 21, the fixed base plate 4 and the base plate seat 3 together, the base plate seat 3 is further provided with a joint hole 33 for exposing the antenna joint, the joint hole 33 corresponds to the antenna joint in the up-down position, the metal post 32 is provided, and the dielectric plate 21, the fixed base plate 4 and the base plate seat 3 can be fixedly connected together by screws, so that the overall firmness of the wide-bandwidth beam medium filled horn antenna is enhanced, and the structure is stable and reliable.
Preferably, the bridge is a quarter-wave rectangular coupled four-arm bridge, and in this embodiment, there are two rectangular coupled four-arm bridges, and the two rectangular coupled four-arm bridges are centrosymmetric with respect to the center point of the dielectric slab.
Preferably, with reference to fig. 3 and fig. 4, for example, one rectangular coupling four-arm bridge is taken, where the rectangular coupling four-arm bridge includes four first bridge microstrip line D1, a second bridge microstrip line D2, a third bridge microstrip line D3, and a fourth bridge microstrip line D4 that are sequentially connected end to end, where the first bridge microstrip line D1 and the third bridge microstrip line D3 have the same width and impedance of 35 Ω, the second bridge microstrip line D2 and the fourth bridge microstrip line D4 have the same width and impedance of 50 Ω, and the width of the first bridge microstrip line D1 is greater than the width of the second bridge microstrip line D2.
Preferably, referring to fig. 3 and 4, the bridge assembly includes a first bridge assembly 23 and a second bridge assembly 24, the first bridge assembly 23 includes a first connection line 231, the first connection line 231 extends from the end of the first T-junction branch line 223 toward the center of the dielectric plate 21 and is connected to a rectangular coupled four-arm bridge, a first arm 232 and a second arm 233 branch off from the rectangular coupled four-arm bridge and extend toward the center of the dielectric plate 21, the first arm 232 is L-shaped, the second arm 233 is reverse L-shaped, the first arm 232 and the second arm 233 form an open square, and a space is provided between an end 2321 of the first arm 232 extending toward the center of the dielectric plate 21 and an end 2331 of the second arm 233 extending toward the center of the dielectric plate 21.
Referring to fig. 3 and 4, a rectangular coupled four-arm bridge is taken as an example, the rectangular coupled four-arm bridge is connected to the first T-junction branch 223, the first arm 232 and the second arm 233 in a "well" shape, specifically, the third bridge microstrip line D3 is connected to the first T-junction branch 223 and the second arm 233, the first end of the first bridge microstrip line D1 parallel to the third bridge microstrip line D3 is connected to the first arm 232, and the second bridge microstrip line D2 and the fourth bridge microstrip line D4 parallel to each other are vertically connected to the first bridge microstrip line D1 and the third bridge microstrip line D3.
Further preferably, the second end of the first microstrip bridge line D1 is connected to an adjusting microstrip line J1, the adjusting microstrip line J1 is perpendicular to the fourth microstrip bridge line D4, and the adjusting microstrip line J1 is arranged to ensure the amplitude consistency between the terminal 2321 of the first arm 232 and the terminal 2331 of the second arm 233, which is equivalent to ensure that the electric fields of the terminal 2321 and the terminal 2331 are the same.
Preferably, as shown in fig. 3, a line connecting the end 2321 of the first arm 232 extending toward the center of the dielectric plate 21 and the center of the dielectric plate is perpendicular to a line connecting the end 2331 of the second arm 233 extending toward the center of the dielectric plate 21 and the center of the dielectric plate, that is, the end 2321 and the end 2331 form a phase difference of 90 ° for forming circular polarization.
Preferably, the dielectric plate 21 is square, the side length is 105mm, the bottom plate seat 3 is square, the side length is 150mm, the requirement of antenna miniaturization is met, and the size is small.
Preferably, the first bridge assembly 23 and the second bridge assembly 24 are centered symmetrically with respect to the center point of the dielectric plate 21.
Preferably, as shown in fig. 3, the first connection line 231 forms an angle of 135 ° with a microstrip line 2231 at the end of the first T-junction branch line 223.
Preferably, as shown in fig. 3, the second bridge assembly 24 includes a second connection line 241, the second connection line 241 extends from the end of the second T-junction branch 224 toward the center of the dielectric plate 21 and connects to one of the rectangular coupled four-arm bridges, a third arm 242 and a fourth arm 243 branch off from the rectangular coupled four-arm bridge and extend toward the center of the dielectric plate 21, the third arm 242 is L-shaped, the fourth arm 243 is reverse L-shaped, the third arm 242 and the fourth arm 243 form an unclosed square, and a space is provided between an end 2421 of the third arm 242 extending toward the center of the dielectric plate 21 and an end 2431 of the fourth arm 243 extending toward the center of the dielectric plate 21.
Preferably, as shown in fig. 3, a connection line between an end 2421 of the third arm 242 extending toward the center of the dielectric plate 21 and the center of the dielectric plate is perpendicular to a connection line between an end 2431 of the fourth arm 243 extending toward the center of the dielectric plate 21 and the center of the dielectric plate. That is, end 2421 is 90 out of phase with end 2431 for circular polarization.
Preferably, as shown in fig. 3, the second connection line 241 forms an angle of 135 ° with a microstrip line 2241 at the end of the second T-junction branch 224.
Further preferably, the length of the microstrip line of the first T-junction branch line 223 is equal to the length of the microstrip line of the second T-junction branch line 224, so as to ensure that the phase and amplitude of the intersection point position where the first connection line 231 is connected with the section of microstrip line 2231 at the end of the first T-junction branch line 223 are consistent with the phase and amplitude of the intersection point position where the second connection line 241 is connected with the section of microstrip line 2241 at the end of the second T-junction branch line 224.
Preferably, referring to fig. 3 and 4, the microstrip line widths of the first T-junction branch line 223, the second T-junction branch line 224, the first connection line 231, the second connection line 241, the first arm 232 (except for the end 2321), the second arm 233 (except for the end 2331), the third arm 242 (except for the end 2421), the fourth arm 243 (except for the end 2431), the second bridge microstrip line D2 and the fourth bridge microstrip line D4 are all 1.22mm, the microstrip line widths of the first bridge microstrip line D1 and the third bridge microstrip line D3 are 1.99mm, and the microstrip line widths of the end 2321 of the first arm 232, the end 2331 of the second arm 233, the end 2421 of the third arm 242 and the end 2431 of the fourth arm 243 are 1.5 mm.
Therefore, through the coupling bridge among the four support arms and the integral structure design of the branch lines and the T-shaped junctions, the antenna structure body which converges from four directions to the center is formed, the converging radiation characteristic of the antenna is enhanced, and the directional convergence of the antenna and the radiation gain of the antenna are improved. The electromagnetic radiation characteristic determined by the structural design of the invention is a multiple optimization result combining principle structural design with simulation and actual measurement.
Preferably, with reference to fig. 1, fig. 2 and fig. 3, an opening Z1 is provided at the bottom of four side surfaces of the horn antenna 1, through which the first arm 232, the second arm 233, the third arm 242 and the fourth arm 243 pass, and by providing the opening Z1, the microstrip line is conveniently extended into the horn antenna, so that the microstrip line is in contact with a filling medium inside the horn antenna to complete coupling feeding of the antenna, and on the other hand, the opening Z1 can also reduce the overall weight of the antenna.
Preferably, the bottom ends of the four side combination positions of the horn antenna 1 are further provided with fixing pieces 13 for fixing the horn antenna 1 on the dielectric plate 21, and the fixing pieces 13 arranged at the four corners of the bottom surface of the horn antenna enable the horn antenna 1 to be stably supported on the dielectric plate, so that the overall firmness of the horn antenna and the dielectric plate is enhanced, and the horn antenna and the dielectric plate are convenient to mount and dismount in a predetermined area as a whole.
Preferably, as shown in fig. 6, in the operating frequency band of 6.3 to 8.6GHz, the voltage standing wave ratio is less than 2, that is, the antenna has good impedance bandwidth characteristics.
Preferably, as shown in fig. 7, the gain of the antenna can reach 8dBi, i.e., the antenna has good radiation characteristics.
Preferably, as shown in fig. 8, the half-power width (or the 3dB lobe width of the antenna) is 76 degrees, that is, the lobe width of the horn antenna is wide, the spatial domain range of the received signal is wider, which is beneficial to implementing the tracking and positioning function of wider spatial domain, and the gain is greater than-2 dBi in the range of ± 70 ° in the axial direction, and the antenna gain at low elevation angle is higher.
Preferably, as shown in fig. 9, the axial ratio of the antenna within the axial ± 90 ° range is less than 3dB, the circular polarization performance is good, and the antenna can be widely used for satellite ground communication and is beneficial to realizing the tracking and positioning function of a full airspace.
In summary, the bottom surface of the horn antenna is opened, and then a microstrip-one-four feed network is used, wherein the feed network adopts a combined mechanism of a T-shaped junction and two 3dB bridges, so that the constant-amplitude phase-shift feed of four ports is realized, and the microstrip line extends into the horn antenna and is in direct contact with the filling medium, so as to perform coupling feed on the antenna.
Based on the above embodiment, the invention discloses a wide-bandwidth beam medium-filled horn antenna, which comprises a rectangular cylinder horn antenna, a feed body arranged below the horn antenna, and a baseplate seat for installing and fixing the horn antenna and the feed body. The wide-bandwidth beam medium filled horn antenna has the advantages of small volume, strong structural stability, high low elevation gain of the antenna and strong radiation capability of the antenna.
The above description is only an embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings, or any other related technical fields, are included in the scope of the present invention.
Claims (10)
1. The wide-bandwidth beam medium-filled horn antenna is characterized by comprising a rectangular cylinder horn antenna, a feed body arranged below the horn antenna, and a baseplate seat for installing and fixing the horn antenna and the feed body.
2. The wide bandwidth beam medium filled horn antenna of claim 1, wherein the horn antenna comprises a hollow rectangular cylinder of square cross-section surrounded by four equal length walls, and wherein the interior of the hollow rectangular cylinder is completely filled with a polyimide solid filler.
3. The wide bandwidth beam dielectric filled horn antenna of claim 2, wherein the feed element comprises a planar dielectric slab, a feed network formed by microstrip lines is laid on an upper surface of the dielectric slab, the feed network comprises a T-junction and two bridge combinations divided by the T-junction, each of the two bridge combinations comprises two arms, the two arms are coupled by a bridge, and the arms extend to a bottom surface of the horn antenna.
4. A broadband wide beam dielectric-filled horn antenna of claim 3 wherein the bridge is a quarter-wavelength, square-shaped, rectangular-coupled four-arm bridge.
5. The broadband wide-beam medium-filled horn antenna of claim 4, wherein the T-junction is disposed at one side edge of the dielectric plate, the T-junction comprises an interface end, a T-junction trunk line extends from the interface end and parallel to the side edge of the dielectric plate, two T-junction branch lines branch from the T-junction trunk line, and each T-junction branch line is connected to one of the bridge assemblies.
6. The wide bandwidth beam medium filled horn antenna of claim 5, the bridge assembly comprises a first bridge assembly and a second bridge assembly, the T-junction leg comprises a first T-junction leg and a second T-junction leg, the first bridge assembly includes a first connection line extending from an end of the first T-junction branch line toward a center of the dielectric plate, and connecting one of the rectangular coupling four-arm bridges, from which a first arm and a second arm extending toward the center of the dielectric plate branch off, the first support arm is L-shaped, the second support arm is reverse L-shaped, the first support arm and the second support arm form an unclosed square, and a space is arranged between the tail end of the first support arm extending towards the center of the medium plate and the tail end of the second support arm extending towards the center of the medium plate.
7. The wide bandwidth beam dielectric filled horn antenna of claim 6 wherein said second bridge assembly comprises a second connecting line extending from the end of said second T-junction leg toward the center of said dielectric slab and connecting to one of said rectangular coupled four-arm bridges, a third arm and a fourth arm diverging from said rectangular coupled four-arm bridge and extending toward the center of said dielectric slab, said third arm being L-shaped and said fourth arm being inverted L-shaped, said third arm and said fourth arm forming an open square, the end of said third arm extending toward the center of said dielectric slab being spaced from the end of said fourth arm extending toward the center of said dielectric slab.
8. The wide bandwidth beam medium-filled horn antenna of claim 7, wherein openings are opened at the bottom of the four sides of the horn antenna for the first arm, the second arm, the third arm, and the fourth arm to pass through, and fixing pieces for fixing the horn antenna on the dielectric plate are further provided at the bottom of the four side combining positions of the horn antenna.
9. The broadband wide-beam medium-filled horn antenna of claim 8, wherein the base plate seat is provided with a supporting cavity, the supporting cavity is arranged below the horn antenna and corresponds to the horn antenna in an up-down position, and an antenna joint is arranged on the lower surface of the dielectric plate and in a position corresponding to the interface end of the T-shaped junction in an up-down position.
10. The wide bandwidth beam medium filled horn antenna of claim 9 wherein the operating frequency band of the wide bandwidth beam medium filled horn antenna is between 6.3GHz and 8.6GHz, the side length of the horn antenna is 25mm, and the wall thickness of the hollow rectangular cylinder is 2 mm.
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| CN202010773874.6A CN111883921B (en) | 2020-08-04 | 2020-08-04 | Wide-bandwidth beam medium-filled horn antenna |
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| US10181645B1 (en) * | 2016-09-06 | 2019-01-15 | Aeroantenna Technology, Inc. | Dual KA band compact high efficiency CP antenna cluster with dual band compact diplexer-polarizers for aeronautical satellite communications |
| CN110518368A (en) * | 2019-08-30 | 2019-11-29 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Circular polarisation slotted waveguide antenna |
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| CN101183747A (en) * | 2007-11-13 | 2008-05-21 | 华南理工大学 | Power dividing horn antenna for space power synthesis and array thereof |
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| US10181645B1 (en) * | 2016-09-06 | 2019-01-15 | Aeroantenna Technology, Inc. | Dual KA band compact high efficiency CP antenna cluster with dual band compact diplexer-polarizers for aeronautical satellite communications |
| CN106207439A (en) * | 2016-09-08 | 2016-12-07 | 中国电子科技集团公司第五十四研究所 | A kind of dual circularly polarized antenna unit and array antenna |
| CN110518368A (en) * | 2019-08-30 | 2019-11-29 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Circular polarisation slotted waveguide antenna |
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