Integrated antenna

Abstract

The invention discloses an integrated antenna which comprises a main cavity, a plurality of antenna oscillator mounting positions are arranged on the main cavity, filling cavities are reserved among the antenna oscillator mounting positions, a wave-absorbing silica gel layer is laid on the inner side of the main cavity, and the filling cavities are filled with polymethacrylimide; the plurality of antenna oscillator modules are detachably mounted on the antenna oscillator mounting positions; and the antenna housing is covered on the main cavity. The integrated antenna adopts an integrated design, can reduce the size of a product, reduces the aerodynamic influence of an external radar of an aircraft, reduces the reflection area of the radar, improves the detection efficiency of the product, and has the advantage of wider wave-absorbing bandwidth.

Description

Technical Field

[0001] The present invention belongs to the technical field of antenna communication devices, and more specifically, the present invention relates to an integrated antenna. Background Art

[0002] With the development and popularization of 5G communication, there are more and more requirements for the update and upgrade of antennas used in communication. Currently, the antennas used in communication mainly include external rod antennas, on-board PCB antennas, SMT patch antennas, array antennas, and FPC antennas, etc. However, some of the above antennas have too large a footprint, and some can only be used as the receiving end of small-sized devices such as mobile phones and laptops.

[0003] In order to reduce the installation volume of antenna products, currently, the oscillator module is usually arranged in the same housing to form an integrated structure, which becomes an integrated antenna. However, the current technology of integrated antennas is not yet mature, and there are still some problems that need to be solved. Especially for the communication antennas carried by aircraft, not only a good shape structure is required to reduce the radar cross-section, but also good electromagnetic wave absorption ability is needed. Currently, the integrated antenna has poor wave absorption ability. When the antenna is used to transmit signals, part of the energy will be absorbed by the antenna itself instead of being radiated outward. This can reduce the interference of the internal reflected waves of the antenna on its own signal transmission. For example, in a multi-band antenna system, the signal transmission of one band may cause reflections in the antenna structure. If these reflected waves cannot be effectively processed, they will interfere with the signals of other bands. An antenna with wave absorption ability can absorb these reflected waves, thereby reducing its own interference and improving the purity and transmission quality of the signal. An antenna with strong wave absorption ability can effectively absorb the stray electromagnetic waves in the surrounding environment. In a complex electromagnetic environment, such as near a communication base station in a city or in a place with a dense concentration of electronic devices, there are a large number of electromagnetic signals from other devices. An antenna with wave absorption ability can reduce the influence of these external interference signals on its own received and transmitted signals, enhance the anti-interference ability of the antenna, improve the reliability and stability of communication, filter out interference signals, enhance the ability to capture weak signals, and thus improve the signal reception sensitivity. Summary of the Invention

[0004] An object of the present invention is to solve at least the above problems and / or defects, and provide at least the advantages described hereinafter.

[0005] To achieve these objects and other advantages in accordance with the present invention, there is provided an integrated antenna, comprising:

[0006] A main cavity, on which there are provided a plurality of antenna oscillator mounting positions, a filling cavity is reserved between the antenna oscillator mounting positions, an absorbing silica gel layer is laid on the inner side of the main cavity, and polymethacrylimide is filled in the filling cavity;

[0007] A plurality of antenna element modules, which are detachably installed on the antenna element installation positions;

[0008] An antenna cover, which is covered on the main cavity.

[0009] Preferably, the material of the main cavity is aluminum or aluminum alloy.

[0010] Preferably, a positioning pin and a connection hole are integrally formed on the antenna element installation position, and the antenna element module is detachably installed on the antenna element installation position through the positioning pin and the connection hole.

[0011] Preferably, the main cavity has an octagonal structure, an installation outer edge is provided at the edge of the main cavity, the installation outer edge is a hexagonal structure with wedge-shaped notches at both ends, and the main cavity and the antenna cover are fixed by high-temperature cementing and curing.

[0012] Preferably, a coaxial radio frequency interface is provided on the antenna element module, and the antenna element module is connected to an external device through the coaxial radio frequency interface.

[0013] Preferably, the preparation method of the wave-absorbing silica gel layer includes:

[0014] Step 1: Ball-mill and mix FeNi powder, SiN powder, carbonyl iron, FeSiCr, and silica powder to obtain a mixed powder;

[0015] Step 2: Ultrasonically disperse the mixed powder in anhydrous ethanol to obtain a dispersion liquid. Drop tetrabutyl titanate into the dispersion liquid, add ammonia water while continuously stirring, adjust the pH of the system to 10-12, stir and heat up to 50-80 °C, keep warm for 1-4 h, then cool to room temperature, stand for 6-24 h, centrifuge and wash to obtain the mixed powder coated with tetrabutyl titanate hydrolysis compound; calcine the mixed powder coated with tetrabutyl titanate hydrolysis compound at a temperature of 400-800 °C for 2-4 h to obtain the mixed powder coated with titanium dioxide;

[0016] Step 3: Disperse the mixed powder coated with titanium dioxide in N,N-dimethylformamide to obtain a suspension; dissolve methyl methacrylate and azobisisobutyronitrile in N,N-dimethylformamide to obtain a reaction solution; drop the reaction solution into the suspension, while stirring and heating up to 70-90 °C, keep warm for 20-40 min, then cool to room temperature, filter and wash, and dry to obtain the mixture powder coated with polymethyl methacrylate / titanium dioxide;

[0017] Step 4: Mix the poly(methyl methacrylate) / titanium dioxide-coated mixture powder with vinyl silicone oil, hydrogen-containing silicone oil, and vinyltrimethoxysilane, heat under vacuum and then cool to obtain an intermediate; add a chloroplatinic acid-isopropanol catalyst and polydimethylsiloxane to the intermediate, mix evenly, heat at 150-200 °C, and keep warm for 30-60 min. After cooling to room temperature, apply pressure at 1.2-2.0 MPa for 1-2 h, and demold to obtain the wave-absorbing silica gel layer.

[0018] Preferably, in Step 1, the mass ratio of the FeNi powder, SiN powder, iron carbonyl, FeSiCr, and silica powder is 1-5:1-3:1:1:1. Using stainless steel balls as grinding balls and anhydrous ethanol as the ball-milling medium, the mass of the grinding balls is 2.5-4 times the total mass of the mixed powder, the amount of anhydrous ethanol used is 1-2 times the volume of the mixed powder, the ball-milling speed is 300-600 rpm, and the ball-milling time is 1-3 h.

[0019] Preferably, in Step 2, the dosage ratio of the mixed powder, anhydrous ethanol, and tetrabutyl titanate is 1-2 g:10-50 mL:4-10 mL.

[0020] Preferably, in Step 3, in the suspension, the dosage ratio of the titanium dioxide-coated mixed powder to N,N-dimethylformamide is 1-2 g:20-50 mL;

[0021] In the reaction solution, the dosage ratio of methyl methacrylate, azobisisobutyronitrile, and N,N-dimethylformamide is 10-20 g:1-5 mL:20-100 mL;

[0022] The volume ratio of the suspension to the reaction solution is 2-4:1.

[0023] Preferably, in Step 4, the mass ratio of the poly(methyl methacrylate) / titanium dioxide-coated mixture powder, vinyl silicone oil, hydrogen-containing silicone oil, vinyltrimethoxysilane, chloroplatinic acid-isopropanol catalyst, and polydimethylsiloxane is 20-50:5-10:0.1-4:2-5:0.01-0.2:0.1-1.

[0024] The present invention has at least the following beneficial effects:

[0025] The integrated antenna of the present invention adopts an integrated design, which can reduce the product volume, reduce the aerodynamic influence of the external radar of the aircraft, reduce the radar cross-section, improve the detection efficiency of the product, and at the same time has the advantage of a wider wave-absorbing bandwidth.

[0026] The wave-absorbing silica gel layer of the integrated antenna installation of the present invention uses FeNi powder, SiN powder, carbonyl iron, FeSiCr, silica powder, vinyl silicone oil, hydrogen-containing silicone oil, and vinyltrimethoxysilane as the main raw materials. Among them, titanium dioxide and polymethyl methacrylate are successively used to coat the mixed powder to obtain a polymethyl methacrylate / titanium dioxide-coated mixture powder. Then, the polymethyl methacrylate / titanium dioxide-coated mixture powder is mixed with vinyl silicone oil, hydrogen-containing silicone oil, and vinyltrimethoxysilane, and vacuum heating is performed to obtain an intermediate; after heating and catalyzing and pressing, demolding is performed to obtain the wave-absorbing silica gel layer; the coating of titanium dioxide improves the electromagnetic matching performance of the mixed powder, enhances the polarization loss. After the electromagnetic wave enters the interior of the wave-absorbing silica gel layer, the reflection of the electromagnetic wave is reduced, and the absorption ability of the electromagnetic wave is improved; the coating of polymethyl methacrylate improves the dispersibility and stability of the spatial distribution of the mixed powder, enables the electromagnetic wave to be uniformly scattered and absorbed in the wave-absorbing silica gel layer, promotes the multiple scattering and reflection of the electromagnetic wave, and further improves the absorption ability of the wave-absorbing silica gel to the electromagnetic wave.

[0027] Other advantages, objectives, and features of the present invention will be partially reflected by the following description, and partially will also be understood by those skilled in the art through the research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic structural diagram of the integrated antenna in Embodiment 1. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The following further describes the present invention in detail with reference to the drawings, so that those skilled in the art can implement it according to the description in the specification.

[0030] Embodiment 1

[0031] As Figure 1 shown, this embodiment provides an integrated antenna, including:

[0032] A main cavity 1, on which there are provided a plurality of antenna element mounting positions 2, a filling cavity 3 is reserved between the antenna element mounting positions 2, an inner side of the main cavity is provided with a wave-absorbing silica gel layer 4, and the filling cavity 3 is filled with polymethacrylimide;

[0033] A plurality of antenna element modules (not shown), which are detachably mounted on the antenna element mounting positions 2;

[0034] An antenna cover (not shown), which covers the main cavity 1.

[0035] The material of the main cavity 1 is aluminum or aluminum alloy.

[0036] A positioning pin 21 and a connection hole 22 are integrally formed on the antenna element mounting position 2, and the antenna element module is detachably mounted on the antenna element mounting position 2 through the positioning pin 21 and the connection hole 22.

[0037] The main cavity is in an octagonal structure, and an installation outer edge is provided at the edge of the main cavity 1. The installation outer edge is a hexagonal structure with wedge-shaped notches at both ends, and the main cavity and the radome are fixed by high-temperature adhesive curing.

[0038] A coaxial radio frequency interface is provided on the antenna element module, and the antenna element module is connected to an external device through the coaxial radio frequency interface.

[0039] The integrated antenna vehicle of this embodiment is in a flat rhombus structure, reducing the product volume, reducing the aerodynamic influence of the external radar of the aircraft, reducing the radar cross section, improving the detection efficiency of the antenna, and having strong wave absorption ability at the same time.

[0040] Embodiment 2

[0041] For the wave-absorbing silica gel layer in Embodiment 1, this embodiment provides a preparation method for the wave-absorbing silica gel layer, including the following steps:

[0042] Step 1: Ball-mill and mix 100 g of FeNi powder, 100 g of SiN powder, 100 g of carbonyl iron, 100 g of FeSiCr, and 100 g of silica powder to obtain a mixed powder; use stainless steel balls as grinding balls, anhydrous ethanol as the ball-milling medium, the mass of the grinding balls is 1250 g, the amount of anhydrous ethanol used is 2 times the volume of the mixed powder, the ball-milling speed is 400 rpm, and the ball-milling time is 2 h;

[0043] Step 2: Ultrasonically disperse 20 g of the mixed powder in 250 mL of anhydrous ethanol to obtain a dispersion liquid. Drop 80 mL of tetrabutyl titanate into the dispersion liquid, add ammonia water while continuously stirring, adjust the pH of the system to 11, stir and heat up to 60 °C, keep warm for 2 h and then cool to room temperature, stand for 12 h, centrifuge and wash to obtain a mixed powder coated with tetrabutyl titanate hydrolysis compound; calcine the mixed powder coated with tetrabutyl titanate hydrolysis compound at 500 °C for 2 h to obtain a mixed powder coated with titanium dioxide;

[0044] Step 3: Disperse 20 g of the titanium dioxide-coated mixed powder in 400 mL of N,N-dimethylformamide to obtain a suspension; dissolve 20 g of methyl methacrylate and 1 mL of azobisisobutyronitrile in 100 mL of N,N-dimethylformamide to obtain a reaction solution; drop 100 mL of the reaction solution into 400 mL of the suspension, stir and heat up to 70 °C at the same time, keep warm for 20 min and then cool to room temperature, filter and wash, and dry to obtain a poly(methyl methacrylate) / titanium dioxide-coated mixture powder;

[0045] Step 4: Mix 200 g of the polymethyl methacrylate / titanium dioxide-coated mixture powder with 50 g of vinyl silicone oil, 1 g of hydrogen-containing silicone oil, and 20 g of vinyltrimethoxysilane, heat and cool under vacuum to obtain an intermediate; add 1 g of chloroplatinic acid-isopropanol catalyst and 2 g of polydimethylsiloxane to the intermediate, mix evenly, heat to 200 °C, keep warm for 60 min, cool to room temperature, and then apply pressure at 1.2 MPa for 1 h, and demold to obtain the wave-absorbing silica gel layer.

[0046] Example 3

[0047] For the wave-absorbing silica gel layer in Example 1, this example provides a preparation method of the wave-absorbing silica gel layer, including the following steps:

[0048] Step 1: Ball-mill and mix 100 g of FeNi powder, 100 g of SiN powder, 100 g of iron carbonyl, 100 g of FeSiCr, and 100 g of silica powder to obtain a mixed powder; use stainless steel balls as grinding balls, anhydrous ethanol as the ball-milling medium, the mass of the grinding balls is 1300 g, the amount of anhydrous ethanol used is 2 times the volume of the mixed powder, the ball-milling speed is 500 rpm, and the ball-milling time is 2 h;

[0049] Step 2: Ultrasonically disperse 20 g of the mixed powder in 250 mL of anhydrous ethanol to obtain a dispersion. Drop 50 mL of tetrabutyl titanate into the dispersion, add ammonia water while continuously stirring, adjust the pH of the system to 11, stir and heat to 60 °C, keep warm for 2 h, then cool to room temperature, stand for 12 h, centrifuge and wash to obtain the mixed powder coated with tetrabutyl titanate hydrolysis compound; calcine the mixed powder coated with tetrabutyl titanate hydrolysis compound at 500 °C for 2 h to obtain the mixed powder coated with titanium dioxide.

[0050] Step 3: Disperse 20 g of the titanium dioxide-coated mixed powder in 400 mL of N,N-dimethylformamide to obtain a suspension; dissolve 20 g of methyl methacrylate and 2 mL of azobisisobutyronitrile in 100 mL of N,N-dimethylformamide to obtain a reaction solution; drop 100 mL of the reaction solution into 200 mL of the suspension, stir and heat to 70 °C at the same time, keep warm for 20 min, then cool to room temperature, filter and wash, and dry to obtain the polymethyl methacrylate / titanium dioxide-coated mixture powder;

[0051] Step 4: Mix 300 g of the polymethyl methacrylate / titanium dioxide-coated mixture powder with 80 g of vinyl silicone oil, 10 g of hydrogen-containing silicone oil, and 30 g of vinyltrimethoxysilane, heat and cool under vacuum to obtain an intermediate; add 1.5 g of chloroplatinic acid-isopropanol catalyst and 5 g of polydimethylsiloxane to the intermediate, mix evenly, heat to 200 °C, and keep warm for 60 min. After cooling to room temperature, apply pressure at 1.5 MPa for 1 h, and demold to obtain the wave-absorbing silica gel layer.

[0052] Example 4

[0053] For the wave-absorbing silica gel layer in Example 1, this example provides a preparation method for the wave-absorbing silica gel layer, including the following steps:

[0054] Step 1: Ball-mill and mix 100 g of FeNi powder, 100 g of SiN powder, 100 g of carbonyl iron, 100 g of FeSiCr, and 100 g of silica powder to obtain a mixed powder; use stainless steel balls as grinding balls, anhydrous ethanol as the ball-milling medium, the mass of the grinding balls is 1500 g, the amount of anhydrous ethanol used is 2 times the volume of the mixed powder, the ball-milling speed is 400 rpm, and the ball-milling time is 2 h;

[0055] Step 2: Ultrasonically disperse 20 g of the mixed powder in 300 mL of anhydrous ethanol to obtain a dispersion. Drop 100 mL of tetrabutyl titanate into the dispersion, add ammonia water while continuously stirring, adjust the pH of the system to 11, stir and heat up to 60 °C, keep warm for 2 h, then cool to room temperature, stand for 12 h, centrifuge and wash to obtain the mixed powder coated with tetrabutyl titanate hydrolysis compound; calcine the mixed powder coated with tetrabutyl titanate hydrolysis compound at 500 °C for 2 h to obtain the mixed powder coated with titanium dioxide.

[0056] Step 3: Disperse 20 g of the titanium dioxide-coated mixed powder in 400 mL of N,N-dimethylformamide to obtain a suspension; dissolve 20 g of methyl methacrylate and 2.5 mL of azobisisobutyronitrile in 100 mL of N,N-dimethylformamide to obtain a reaction solution; drop 50 mL of the reaction solution into 200 mL of the suspension, stir and heat up to 70 °C at the same time, keep warm for 20 min, then cool to room temperature, filter and wash, and dry to obtain the polymethyl methacrylate / titanium dioxide-coated mixture powder.

[0057] Step 4: Mix 500 g of the polymethyl methacrylate / titanium dioxide-coated mixture powder with 100 g of vinyl silicone oil, 20 g of hydrogen-containing silicone oil, and 50 g of vinyltrimethoxysilane, heat and cool under vacuum to obtain an intermediate; add 2 g of chloroplatinic acid-isopropanol catalyst and 10 g of polydimethylsiloxane to the intermediate, mix evenly, heat to 200 °C, and keep warm for 60 min. After cooling to room temperature, apply pressure at 2.0 MPa for 1 h, and demold to obtain the wave-absorbing silica gel layer.

[0058] Comparative Example 1

[0059] This comparative example provides a method for preparing an electromagnetic wave absorbing silica gel layer, including the following steps:

[0060] Step 1: Mix 100 g of FeNi powder, 100 g of SiN powder, 100 g of carbonyl iron, 100 g of FeSiCr, and 100 g of silica powder by ball milling to obtain a mixed powder; use stainless steel balls as grinding balls, anhydrous ethanol as the ball milling medium, the mass of the grinding balls is 1250 g, the amount of anhydrous ethanol used is 2 times the volume of the mixed powder, the ball milling speed is 400 rpm, and the ball milling time is 2 h;

[0061] Step 4: Mix 200 g of the mixture powder with 50 g of vinyl silicone oil, 1 g of hydrogen-containing silicone oil, and 20 g of vinyltrimethoxysilane, heat and cool under vacuum to obtain an intermediate; add 1 g of chloroplatinic acid-isopropanol catalyst and 2 g of polydimethylsiloxane to the intermediate, mix evenly, heat to 200 °C, and keep warm for 60 min. After cooling to room temperature, pressurize at 1.2 MPa for 1 h, and demold to obtain the electromagnetic wave absorbing silica gel layer.

[0062] Comparative Example 2

[0063] This comparative example provides a method for preparing an electromagnetic wave absorbing silica gel layer, including the following steps:

[0064] Step 1: Mix 100 g of FeNi powder, 100 g of SiN powder, 100 g of carbonyl iron, 100 g of FeSiCr, and 100 g of silica powder by ball milling to obtain a mixed powder; use stainless steel balls as grinding balls, anhydrous ethanol as the ball milling medium, the mass of the grinding balls is 1250 g, the amount of anhydrous ethanol used is 2 times the volume of the mixed powder, the ball milling speed is 400 rpm, and the ball milling time is 2 h;

[0065] Step 2: Ultrasonically disperse 20 g of the mixed powder in 250 mL of anhydrous ethanol to obtain a dispersion. Drop 80 mL of tetrabutyl titanate into the dispersion, add ammonia water while continuously stirring, adjust the pH of the system to 11, stir and heat to 60 °C, keep warm for 2 h, then cool to room temperature, stand for 12 h, centrifuge and wash to obtain the mixed powder coated with tetrabutyl titanate hydrolysis compound; calcine the mixed powder coated with tetrabutyl titanate hydrolysis compound at 500 °C for 2 h to obtain the mixed powder coated with titanium dioxide;

[0066] Step 3: Mix 200 g of the titanium dioxide-coated mixture powder with 50 g of vinyl silicone oil, 1 g of hydrogen-containing silicone oil, and 20 g of vinyltrimethoxysilane, heat and cool it under vacuum to obtain an intermediate; add 1 g of chloroplatinic acid-isopropanol catalyst and 2 g of polydimethylsiloxane to the intermediate, mix evenly, heat to 200 °C, and keep it warm for 60 min. After cooling to room temperature, apply pressure at 1.2 MPa for 1 h, and demold to obtain the wave-absorbing silica gel layer.

[0067] Comparative Example 3

[0068] This comparative example provides a method for preparing a wave-absorbing silica gel layer, which includes the following steps:

[0069] Step 1: Ball-mill and mix 100 g of FeNi powder, 100 g of SiN powder, 100 g of carbonyl iron, 100 g of FeSiCr, and 100 g of silica powder to obtain a mixed powder; use stainless steel balls as grinding balls, anhydrous ethanol as the ball-milling medium, the mass of the grinding balls is 1250 g, the amount of anhydrous ethanol used is 2 times the volume of the mixed powder, the ball-milling speed is 400 rpm, and the ball-milling time is 2 h;

[0070] Step 2: Disperse 20 g of the mixed powder in 400 mL of N,N-dimethylformamide to obtain a suspension; dissolve 20 g of methyl methacrylate and 1 mL of azobisisobutyronitrile in 100 mL of N,N-dimethylformamide to obtain a reaction solution; add 100 mL of the reaction solution dropwise to 400 mL of the suspension, stir and heat to 70 °C at the same time, keep it warm for 20 min, then cool to room temperature, filter, wash, and dry to obtain the poly(methyl methacrylate)-coated mixture powder;

[0071] Step 3: Mix 200 g of the poly(methyl methacrylate)-coated mixture powder with 50 g of vinyl silicone oil, 1 g of hydrogen-containing silicone oil, and 20 g of vinyltrimethoxysilane, heat and cool it under vacuum to obtain an intermediate; add 1 g of chloroplatinic acid-isopropanol catalyst and 2 g of polydimethylsiloxane to the intermediate, mix evenly, heat to 200 °C, and keep it warm for 60 min. After cooling to room temperature, apply pressure at 1.2 MPa for 1 h, and demold to obtain the wave-absorbing silica gel layer.

[0072] Measure the electromagnetic wave absorption bandwidths of the wave-absorbing silica gel layers prepared in Examples 2 - 4 and Comparative Examples 1 - 3 respectively to obtain Table 1:

[0073] Table 1 Electromagnetic Wave Absorption Bandwidths of Wave-Absorbing Silica Gel Layers of Each Sample

[0074]

[0075] As can be seen from the above table, the wave-absorbing silica gel layer prepared from the mixture powder coated with polymethyl methacrylate / titanium dioxide in Examples 2 to 4 has a wider electromagnetic wave absorption bandwidth. Therefore, the integrated antenna installed with the wave-absorbing silica gel layer prepared in Examples 2 to 4 has stronger and wider-band electromagnetic wave absorption ability.

[0076] The number of devices and the scale of processing described here are used to simplify the description of the present invention. Applications, modifications, and variations of the present invention will be apparent to those skilled in the art.

[0077] Although the embodiments of the present invention have been disclosed as above, it is not limited to only the applications listed in the specification and embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily achieved. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to specific details and the illustrated and described examples here.

Claims

1. An integrated antenna, characterized in that: include: A main cavity, on which a plurality of antenna vibrator mounting positions are arranged, a filling cavity is reserved between the antenna vibrator mounting positions, an absorbing silica gel layer is laid on the inner side of the main cavity, and the filling cavity is filled with polymethacrylimide; A plurality of antenna vibrator modules, which are detachably mounted on the antenna vibrator mounting position; The antenna cover covers the main cavity.

2. The integrated antenna according to claim 1, characterized in that: The main cavity is made of aluminum or aluminum alloy.

3. The integrated antenna according to claim 1, characterized in that: The antenna vibrator installation position is integrally formed with a positioning pin and a connecting hole, and the antenna vibrator module is detachably installed with the antenna vibrator installation position via the positioning pin and the connecting hole.

4. The integrated antenna according to claim 1, characterized in that: The main cavity is in an octagonal structure. The edge of the main cavity is provided with an outer mounting edge. The outer mounting edge is a hexagonal structure with wedge-shaped notches at both ends. The main cavity and the antenna cover are fixed by high-temperature gluing and curing.

5. The integrated antenna according to claim 1, characterized in that: The antenna vibrator module is provided with a coaxial radio frequency interface, and the antenna vibrator module is connected to an external device through the coaxial radio frequency interface.

6. The integrated antenna according to claim 1, characterized in that: The preparation method of the wave-absorbing silica gel layer comprises: Step 1, ball-milling FeNi powder, SiN powder, carbonyl iron, FeSiCr, and silicon dioxide powder to obtain a mixed powder; Step 2: ultrasonically disperse the mixed powder in anhydrous ethanol to obtain a dispersion, drop tetrabutyl titanate into the dispersion, add ammonia water while continuously stirring, adjust the system pH to 10-12, stir and heat to 50-80°C, keep warm for 1-4 hours, then cool to room temperature, stand for 6-24 hours, centrifuge and wash to obtain a mixed powder coated with a tetrabutyl titanate hydrolyzate compound; calcine the mixed powder coated with the tetrabutyl titanate hydrolyzate compound at 400-800°C for 2-4 hours to obtain a titanium dioxide coated mixed powder; Step 3, dispersing the titanium dioxide-coated mixed powder in N,N-dimethylformamide to obtain a suspension; dissolving methyl methacrylate and azobisisobutyronitrile in N,N-dimethylformamide to obtain a reaction solution; dropping the reaction solution into the suspension, stirring and heating to 70-90° C., keeping the temperature for 20-40 minutes, cooling to room temperature, filtering, washing, and drying to obtain a polymethyl methacrylate / titanium dioxide-coated mixed powder; Step 4: Mix the polymethyl methacrylate / titanium dioxide coated mixture powder with vinyl silicone oil, hydrogenated silicone oil and vinyl trimethoxysilane, heat and cool in vacuum to obtain an intermediate; add chloroplatinic acid-isopropanol catalyst and polydimethylsiloxane to the intermediate, mix evenly, heat to 150-200°C, and keep warm for 30-60 minutes, cool to room temperature, pressurize at 1.2-2.0 MPa for 1-2 hours, and demold to obtain an absorbing silicone layer.

7. The integrated antenna according to claim 6, characterized in that: In the step 1, the mass ratio of FeNi powder, SiN powder, carbonyl iron, FeSiCr and silicon dioxide powder is 1-5:1-3:1:1:1, stainless steel balls are used as grinding balls, anhydrous ethanol is used as ball milling medium, the mass of the grinding balls is 2.5-4 times the total mass of the mixed powder, the amount of anhydrous ethanol is 1-2 times the volume of the mixed powder, the ball milling speed is 300-600 rpm, and the ball milling time is 1-3 h.

8. The integrated antenna according to claim 6, characterized in that: In the step 2, the usage ratio of the mixed powder, anhydrous ethanol and tetrabutyl titanate is 1-2 g: 10-50 mL: 4-10 mL.

9. The integrated antenna according to claim 6, characterized in that: In the step 3, in the suspension, the ratio of the titanium dioxide-coated mixed powder to N,N-dimethylformamide is 1-2 g: 20-50 mL; In the reaction solution, the usage ratio of methyl methacrylate, azobisisobutyronitrile and N,N-dimethylformamide is 10-20 g: 1-5 mL: 20-100 mL; The volume ratio of the suspension to the reaction solution is 2 to 4:

1.

10. The integrated antenna according to claim 6, characterized in that: In the step 4, the mass ratio of the polymethyl methacrylate / titanium dioxide coated mixture powder, vinyl silicone oil, hydrogen-containing silicone oil, vinyl trimethoxy silane, chloroplatinic acid-isopropanol catalyst, and polydimethylsiloxane is 20-50:5-10:0.1-4:2-5:0.01-0.2:0.1-1.

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