CN116345190B - Structure embedded X, ka wave band wide wave beam thermal antenna feed system - Google Patents
Structure embedded X, ka wave band wide wave beam thermal antenna feed system Download PDFInfo
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- CN116345190B CN116345190B CN202310176484.4A CN202310176484A CN116345190B CN 116345190 B CN116345190 B CN 116345190B CN 202310176484 A CN202310176484 A CN 202310176484A CN 116345190 B CN116345190 B CN 116345190B
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- 230000005540 biological transmission Effects 0.000 claims abstract description 49
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000002184 metal Substances 0.000 claims abstract description 25
- 239000000758 substrate Substances 0.000 claims abstract description 24
- 230000008859 change Effects 0.000 claims abstract description 6
- 230000005855 radiation Effects 0.000 claims description 12
- 238000009413 insulation Methods 0.000 claims description 8
- 239000000523 sample Substances 0.000 claims description 8
- 230000007704 transition Effects 0.000 claims description 6
- 239000004020 conductor Substances 0.000 claims description 3
- 239000003989 dielectric material Substances 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract description 5
- 238000004088 simulation Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 7
- 238000002955 isolation Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 5
- 238000007493 shaping process Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003071 parasitic effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/28—Adaptation for use in or on aircraft, missiles, satellites, or balloons
-
- 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
- H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
- H01Q1/422—Housings not intimately mechanically associated with radiating elements, e.g. radome comprising two or more layers of dielectric material
-
- 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
-
- 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
- H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Astronomy & Astrophysics (AREA)
- Aviation & Aerospace Engineering (AREA)
- General Physics & Mathematics (AREA)
- Remote Sensing (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention discloses a structure embedded X, ka wave band wide wave beam thermal antenna feed system, which comprises: the antenna comprises a Ka-band first antenna and an X-band second antenna, wherein the first antenna comprises a conical gradual change alumina ceramic dielectric rod and a medium-filled rectangular waveguide transmission line which are connected, the second antenna comprises a double-sided printed dipole, a converter and a substrate integrated waveguide transmission line which are connected, and the top metal of the substrate integrated waveguide transmission line of the second antenna and the bottom metal of the medium-filled rectangular waveguide transmission line of the first antenna share the same metal surface. According to the invention, the two antennas with large frequency band spans are arranged at the center position under the same antenna window, so that the two antennas can work together in a narrow installation environment without mutual influence on the electric performance, and meanwhile, the heat-proof and heat-proof antenna housing and the antennas are integrally designed, so that the two antennas can work normally for a long time under the high temperature condition of more than 1000 ℃ and the electric performance meets the requirements. Through electromagnetic and thermal multi-physical field simulation, the electric performance and the thermal performance are good.
Description
Technical Field
The invention relates to the technical field of antennas, in particular to a X, ka-band wide-beam thermal antenna feed system.
Background
Since the research of the thermal antenna feeder technology applied to the aircraft not only requires theoretical knowledge of electromagnetic fields and antennas, but also involves related discipline knowledge in the fields of materials, thermodynamics and the like, the current patent and literature content about the thermal antenna feeder of the high-speed aircraft is lacking.
The complex surface of the aircraft has extreme environmental factors, and the thermal antenna feeder system needs the antenna housing with high temperature resistance, corrosion resistance and good mechanical properties, so that the antenna housing becomes thicker to cope with the complex extreme environment, and thus the effective radiation of electromagnetic waves faces great challenges. This phenomenon is particularly prominent in the high-frequency electromagnetic wave portion, the horn effect is more serious due to the thicker surrounding radome and the complex installation environment, the higher the frequency band is, the more serious the matching performance and pattern shaping deterioration of the antenna are, and the pattern requirement of wide beam coverage required by the aircraft is difficult to realize.
Conventional metal antennas such as yagi antennas, log periodic antennas, and other low profile standing wave antennas are difficult to meet due to limited installation space and severe high temperature operating environments. On the one hand, the size of the traditional metal antenna is difficult to accommodate in a very narrow space, and the weight of the traditional metal antenna is not satisfactory. Antennas constructed of conventional metallic materials are also difficult to withstand the high temperatures described above. On the other hand, the low-profile standing wave antenna greatly influences the electrical performance due to the coverage of the heat-proof, heat-insulating layer and the gold-plating layer around.
The literature on the optimization design study of the missile-borne high-temperature-resistant inclined wave beam antenna adopts a mode of air feeding of patches in a heat insulation layer to transmit and receive electromagnetic waves, so that energy transmission is realized to a certain extent, and heat conduction is reduced. However, the thermal insulation material is generally poor in mechanical property and low in processing precision, the thermal insulation layer is required to be divided into a plurality of blocks in a literature processing mode, so that the actual processing and manufacturing difficulty is increased, and when the designed frequency band is in a high frequency range, more parasitic patch radiation energy is required, so that the total radiation efficiency of the antenna is reduced, and the multi-frequency band is difficult to realize in a narrow installation space of an aircraft. In addition, in terms of thermal performance, metal thermal conduction will be worse than ceramic dielectric and more parasitic patches will deteriorate thermal performance.
The three-dimensional alumina ceramic dielectric rod antenna with better directional pattern shaping is adopted, the antenna body is embedded into the heat insulation layer of the antenna housing of the high-speed aircraft, and the heat insulation antenna housing is integrally designed as a part of radiation, so that the directional pattern shaping requirement of wide wave beams is better realized, and the antenna housing is an effective way for solving the problems.
Disclosure of Invention
The invention aims to: the invention aims to provide a structure embedded X, ka wave band wide-beam thermal antenna feed system, which can enable the X, ka wave band antenna to be compact in structure, realize wide-beam coverage in a limited small space and realize high isolation of two antennas.
The invention comprises the following steps: the invention provides a structure embedded X, ka wave band wide wave beam thermal antenna feed system, comprising:
the antenna comprises a Ka-band first antenna and an X-band second antenna, wherein the first antenna comprises a conical gradual change alumina ceramic dielectric rod and a medium-filled rectangular waveguide transmission line which are connected, the second antenna comprises a double-sided printed dipole, a converter and a substrate integrated waveguide transmission line which are connected, and the top metal of the substrate integrated waveguide transmission line of the second antenna and the bottom metal of the medium-filled rectangular waveguide transmission line of the first antenna share the same metal surface.
Preferably, the first antenna further comprises a coaxial probe, wherein an inner conductor part of the coaxial probe is embedded into the dielectric-filled rectangular waveguide transmission line, and a lower part of the tapered alumina ceramic dielectric rod is embedded into the dielectric-filled rectangular waveguide transmission line;
the second antenna further comprises a microstrip transmission line, and the converter is a trapezoid double-sided parallel strip line, wherein the microstrip transmission line, the substrate integrated waveguide transmission line, the trapezoid double-sided parallel strip line and the double-sided printed dipole are sequentially connected.
Preferably, the tapered gradual change alumina ceramic dielectric rod comprises a matching section, a transition section and a radiation section which are sequentially connected from bottom to top, wherein the matching section and the radiation section are of a linear transition structure.
Preferably, the matching section is inserted into the dielectric-filled rectangular waveguide transmission line.
Preferably, the antenna further comprises a heat-proof antenna cover, and the first antenna and the second antenna are embedded in the central position inside the heat-proof antenna cover.
Preferably, the heat-proof antenna housing comprises a heat-proof cover plate, a heat-insulating layer and a square metal flange plate, wherein the square metal flange plate is positioned below the heat-insulating layer, the upper parts of the first antenna and the second antenna are embedded and installed in the heat-insulating layer, and the lower parts of the first antenna and the second antenna are fixedly embedded and installed in the square metal flange plate.
Preferably, the periphery of the outer bottom of the heat-proof cover plate is provided with a flange structure for being fixedly installed with the square metal flange plate.
Preferably, a mounting groove for embedding the mounting antenna is formed in the heat insulating layer, and an air gap is formed between the double-sided printed dipole and the bottom of the mounting groove.
Preferably, the insulating layer is the same as the dielectric material in the dielectric-filled rectangular waveguide transmission line.
The beneficial effects are that: compared with the prior art, the invention has the following technical advantages: according to the invention, the double-sided printed dipole antenna is realized by adopting the design of the alumina ceramic with high dielectric constant, and the required end-fire performance is realized under the condition of very low profile, on one hand, the thermal performance can be adjusted by the distance between the top of the ceramic dielectric substrate and the heat-proof antenna housing, and the cross section area of the ceramic dielectric substrate is smaller, so that the heat conduction is effectively reduced; on the other hand, the frequency band is lower, the wavelength is longer, the influence of the heat-proof and heat-proof radome on low frequency is smaller, and the heat-proof and heat-proof radome can be placed at a position far away from the radome so as to meet the electric heating performance. Because the tapered gradual change alumina ceramic dielectric rod antenna is a traveling wave end-fire, the radiation phase center of the tapered gradual change alumina ceramic dielectric rod antenna is arranged at the top of the dielectric rod, so that the problem of 'horn effect' can be solved, and the directional pattern shaping can be better realized. The required heat-proof and insulating performance can be realized by the high-temperature resistant material and the distance between the top of the medium rod and the bottom of the heat-proof cover plate.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an antenna prototype system according to the present invention;
fig. 2 is a cross-sectional view of a prototype antenna system according to the present invention: fig. 2 (a) is a front view of an antenna structure; fig. 2 (b) is a side view of the antenna structure;
fig. 3 is a schematic diagram of an antenna body according to the present invention: FIG. 3 (a) is a front view of a tapered graded alumina ceramic dielectric rod antenna; FIG. 3 (b) is a front view of a tapered graded alumina ceramic dielectric rod antenna and a double-sided printed dipole antenna; FIG. 3 (c) is a back side view of a tapered graded alumina ceramic dielectric rod antenna and a double-sided printed dipole antenna; FIG. 3 (d) is a side view of a tapered graded alumina ceramic dielectric rod antenna and a double-sided printed dipole antenna;
fig. 4 is a standing wave ratio and isolation diagram of two antennas according to the present invention: fig. 4 (a) is a standing wave ratio diagram of a first antenna element; fig. 4 (b) is a standing wave ratio diagram of the second antenna;
fig. 5 is a gain section view of two antennas according to the present invention: fig. 5 (a) is a gain section view of the first antenna; fig. 5 (b) is a second antenna gain section view;
FIG. 6 is a graph showing the temperature rise of a prototype of the invention over time heating a typical part.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1, the structure embedded X, ka band wide beam thermal antenna is mainly composed of a first antenna, a second antenna and a heat-proof antenna cover structure, wherein the first antenna and the second antenna are installed in the antenna cover.
The first antenna comprises a tapered gradual alumina ceramic dielectric rod 101, a dielectric-filled rectangular waveguide transmission line 102, a coaxial probe 103 and a filling dielectric 104, wherein the filling dielectric 104 is filled in the dielectric-filled rectangular waveguide transmission line 102;
the second antenna comprises a double-sided printed dipole 201, a microstrip transmission line 202, a substrate integrated waveguide transmission line 203, a trapezoidal double-sided parallel strip line 204 and an alumina ceramic dielectric substrate 205.
Microstrip transmission line 202, substrate integrated waveguide transmission line 203, trapezoidal double-sided parallel strip line 204, and double-sided printed dipole are sequentially connected 201.
The copper-clad layers on the surfaces of the double-sided printed dipole 201, the substrate integrated waveguide transmission line 203 and the trapezoid double-sided parallel strip line 204 are printed on two sides of the alumina ceramic dielectric substrate 205, and in order to reduce the influence of the dielectric-filled rectangular waveguide transmission line 102 on the microstrip transmission line 202, the copper-clad surface on the bottom of the microstrip transmission line 202 is printed on one side of the dielectric-filled rectangular waveguide transmission line 102. The copper-clad surface on one side of the substrate integrated waveguide transmission line 203 is used as a medium to fill one side wall of the rectangular waveguide transmission line 102, so that the two frequency band antennas are compactly integrated in a smaller antenna window and have wider wave beams, and the utilization rate of the antenna window is improved.
The heat-proof radome comprises a heat-proof cover plate 301, a heat-proof layer 302, a square metal flange plate 303 and bolts 304 for fixing the square metal flange plate and the outer bottom flange structure of the heat-proof cover plate.
Fig. 2 (a) and 2 (b) are front and side views, respectively, of an antenna prototype system, with tapered graded alumina ceramic dielectric rod 101 and double-sided printed dipole 201, trapezoidal double-sided parallel stripline 204, and partial alumina ceramic dielectric substrate 205 embedded in insulating layer 302, centered in insulating layer 302. Under the comprehensive consideration of mechanical properties and thermal properties, the heat insulation layer 302 is embedded into the heat-proof cover plate 301 and is packaged by screws from bottom to top.
In this embodiment, the double-sided printed dipole 201 is embedded in the heat insulating layer 302, and the slot inside the heat insulating layer 302 is longer than the length of the embedded portion of the double-sided printed dipole 201, so that a good matching effect is achieved by introducing partial air filling.
Fig. 3 (a) is a front view of a structure of a tapered alumina ceramic dielectric rod 101, the overall length of which is divided into three parts, the bottom is a matching section part, and the length l3=10mm; the middle is a transition section part, the length of which l1=7mm; the top is the radiating section portion, which has a length l2=33.2 mm. Its transition width is w1=6mm, and both the radiation section and the matching section width are gradually narrowed by W1, and for better matching, their gradual angles are α1=4.31, α2=8.53°, respectively.
Fig. 3 (b) is a front view of the first antenna and the second antenna, and the bottom matching section of the tapered graded alumina ceramic dielectric rod 101 is partially inserted into the dielectric filled rectangular waveguide transmission line 102. The copper-clad surface on one side of the substrate integrated waveguide transmission line 203 of the second antenna is used as one side wall of the dielectric-filled rectangular waveguide transmission line 102, the width of the copper-clad surface is w3=9.1 mm, the length of the dielectric-filled rectangular waveguide transmission line 102 is l4=18 mm, the width of the alumina ceramic dielectric substrate 205 is w2=19.1 mm, the length of the trapezoidal double-sided parallel strip line 204 is l5=5.7 mm, and the length of the double-sided printed dipole 201 is w4=4.75 mm.
Fig. 3 (c) is a back view of the first antenna and the second antenna, wherein the distance w5=8 mm between the through holes of the substrate integrated waveguide 203 of the second antenna, and the microstrip transmission line 202 gradually tapers to the substrate integrated waveguide 203, and the tapered end length thereof is w6=3 mm.
In fig. 3 (d), the thickness of the tapered alumina ceramic dielectric rod 101 is h1=2 mm, the thickness of the upper wall of the dielectric-filled rectangular waveguide transmission line 102 is h2=4.1 mm, the distance from the bottom of the upper wall to the bottom wall is h4=3.6 mm, the length of the coaxial probe 103 inserted into the dielectric-filled rectangular waveguide transmission line 102 is h5=1.9 mm, and the length of the filling dielectric 104 filled inside the dielectric-filled rectangular waveguide transmission line 102 is l6=9 mm. The thickness of the substrate integrated waveguide 203 is h3=0.5 mm.
In this embodiment, the insulating layer 302 and the filling medium 104 of the antenna are the same insulating material, and the relative dielectric constant is 1.3; the relative dielectric constant of the heat shield plate 301 is 3.1; the dielectric constant of the alumina ceramic dielectric substrate 205 is 9.4; the dielectric constant of the tapered alumina ceramic dielectric rod 101 was 10. As shown in fig. 4, fig. 4 (a) and fig. 4 (b) are standing wave ratio and isolation diagrams of the first antenna and the second antenna respectively, and fig. 4 (a) shows that the first antenna is better matched at 32GHz, and the isolation of the first antenna and the second antenna is below 25 dB. The second antenna of fig. 4 (b) is better matched at about 9GHz, with isolation from the first antenna below-80 dBi.
As shown in fig. 5, fig. 5 (a) and fig. 5 (b) are gain patterns of the second antenna and the first antenna, respectively, the gain patterns are all greater than-8 dBi within a range of ±60°, and the individual dead points are lower than-8 dBi, so that the effect of wide beam is realized.
According to the invention, the two antenna structures are embedded into the heat-proof radome to complete the integrated design of the antenna and the radome, so that all functions of high temperature resistance, directional radiation of the antenna and shaping bearing force of the outer surface of the aircraft of the heat-proof radome are generally realized.
The two frequency band antennas are integrated in a smaller antenna window and work simultaneously, so that the number of the aircraft cabin antenna windows is reduced, and the utilization rate of the antenna windows is improved. Therefore, the tapered graded alumina ceramic dielectric rod antenna and the double-sided printed dipole antenna are placed in a common antenna window. Considering the influence of the installation environment on the two frequency band antennas, two antenna units are arranged at the center of an antenna window, and the metal wall on the upper side of the substrate integrated waveguide of the double-sided printed dipole antenna is used as one metal wall of the dielectric filling rectangular waveguide transmission line. The high isolation characteristic can be realized due to the traveling wave characteristic of the dielectric rod antenna and the polarization difference between the two antennas. In the design process of the wide-beam thermal antenna feeder with the embedded structure X, ka wave band, multiple physical fields including electromagnetism, heat and structure are adopted for simulation, so that good heat insulation performance can be realized.
To verify the heat resistance of this prototype antenna, thermal simulation tests were performed using the commercial software CST Studio Suite. After the external heating is carried out for 2000 seconds at 1200 ℃, the temperature rise curve diagram of the typical part is shown in fig. 6, and the sample can be seen to work normally at high temperature, so that the heat transfer is slowed down, and the temperature of the feeding end is not more than 100 ℃.
From the above, the invention designs a wide beam antenna system which can normally work for a long time under high temperature condition and can block external high temperature from being conducted to a feed end and a receiving and transmitting device in a narrow space below an allowable small-area heat-proof layer. By adopting an integrated design way, the temperature of a feed end is not more than 100 ℃, and the radiation beam width is +/-60 degrees, so that the gain of more than-8 dBi is realized. The whole antenna structure is compact and has high reliability. Meanwhile, good matching can be satisfied by adjusting the length of the inner conductor of the coaxial probe, and the sensitivity of the feed structure to the processing technology is effectively reduced.
Claims (6)
1. A structural embedded X, ka band wide beam thermal antenna feed system comprising: the antenna comprises a first antenna in Ka wave band and a second antenna in X wave band, wherein the first antenna comprises a conical gradual change alumina ceramic dielectric rod and a medium filled rectangular waveguide transmission line which are connected, the second antenna comprises a double-sided printed dipole, a converter and a substrate integrated waveguide transmission line which are connected, and the top metal of the substrate integrated waveguide transmission line of the second antenna and the bottom metal of the medium filled rectangular waveguide transmission line of the first antenna share the same metal surface;
the first antenna further comprises a coaxial probe, wherein the inner conductor part of the coaxial probe is embedded into the dielectric-filled rectangular waveguide transmission line, and the lower part of the tapered gradual-change alumina ceramic dielectric rod is embedded into the dielectric-filled rectangular waveguide transmission line;
the second antenna further comprises a microstrip transmission line, and the converter is a trapezoid double-sided parallel strip line, wherein the microstrip transmission line, the substrate integrated waveguide transmission line, the trapezoid double-sided parallel strip line and the double-sided printed dipole are connected in sequence;
the antenna also comprises an anti-heat insulation antenna cover, and the first antenna and the second antenna are embedded into the central position inside the anti-heat insulation antenna cover;
the heat-proof antenna housing comprises a heat-proof cover plate, a heat-proof layer and a square metal flange plate, wherein the square metal flange plate is positioned below the heat-proof layer, the upper parts of the first antenna and the second antenna are embedded and installed in the heat-proof layer, and the lower parts of the first antenna and the second antenna are fixedly embedded and installed in the square metal flange plate.
2. The structural embedded X, ka-band wide-beam thermal antenna feed system of claim 1, wherein the tapered graded alumina ceramic dielectric rod comprises a matching section, a transition section and a radiation section which are sequentially connected from bottom to top, and the matching section and the radiation section are of linear transition structures.
3. A structured embedded X, ka-band wide-beam thermal antenna feed system as claimed in claim 2, wherein said matching section is inserted inside a dielectric-filled rectangular waveguide transmission line.
4. The structural embedded X, ka band wide beam thermal antenna system of claim 1, wherein said heat shield has a flange structure around the outer bottom for fixedly mounting with a square metal flange.
5. The structure embedded X, ka broadband thermal antenna feed system of claim 1, wherein said insulating layer is internally provided with a mounting slot for embedding a mounting antenna, and an air gap is provided between the double-sided printed dipole and the bottom of the mounting slot.
6. A structured embedded X, ka band wide beam thermal antenna feed system as claimed in claim 1, wherein said insulating layer is of the same dielectric material as in the dielectric filled rectangular waveguide transmission line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310176484.4A CN116345190B (en) | 2023-02-28 | 2023-02-28 | Structure embedded X, ka wave band wide wave beam thermal antenna feed system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310176484.4A CN116345190B (en) | 2023-02-28 | 2023-02-28 | Structure embedded X, ka wave band wide wave beam thermal antenna feed system |
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| CN116345190A CN116345190A (en) | 2023-06-27 |
| CN116345190B true CN116345190B (en) | 2023-12-01 |
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| Ka频段介质棒天线优化设计;王楠楠;邱景辉;李高飞;邓维波;;电波科学学报(第01期);全文 * |
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