CN114094317A - Multi-layer composite material strip line antenna, integrated forming mold and method - Google Patents
Multi-layer composite material strip line antenna, integrated forming mold and method Download PDFInfo
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- CN114094317A CN114094317A CN202111231603.9A CN202111231603A CN114094317A CN 114094317 A CN114094317 A CN 114094317A CN 202111231603 A CN202111231603 A CN 202111231603A CN 114094317 A CN114094317 A CN 114094317A
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- 238000003466 welding Methods 0.000 claims abstract description 45
- 238000003825 pressing Methods 0.000 claims abstract description 26
- 239000006260 foam Substances 0.000 claims abstract description 24
- 239000003292 glue Substances 0.000 claims abstract description 21
- 238000000465 moulding Methods 0.000 claims abstract description 12
- 238000002955 isolation Methods 0.000 claims abstract description 3
- 239000000758 substrate Substances 0.000 claims description 80
- 239000002313 adhesive film Substances 0.000 claims description 18
- LQBJWKCYZGMFEV-UHFFFAOYSA-N lead tin Chemical compound [Sn].[Pb] LQBJWKCYZGMFEV-UHFFFAOYSA-N 0.000 claims description 10
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- 238000005476 soldering Methods 0.000 claims description 8
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- 229910052902 vermiculite Inorganic materials 0.000 claims description 3
- 235000019354 vermiculite Nutrition 0.000 claims description 3
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- 229920003235 aromatic polyamide Polymers 0.000 claims 1
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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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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Abstract
The invention relates to a multi-layer composite material strip line antenna, an integrated forming die and a method, wherein the die consists of a forming die and a welding tool; the molding process comprises the following steps: the lower reflecting plate is welded with the lower beam of the plug support; paving a skin, a lower reflecting plate, a glue film, foam, a glue film and an intermediate strip line; welding a plug; laying a glue film, foam, a glue film and an upper reflecting plate; the upper reflecting plate is welded with the upper beam of the plug support; laying a skin, an isolation film, a tool pressing plate and an air-permeable felt; curing and molding; demolding and post-treating. According to the invention, through the welding tool and the groove structure designed on the forming die, the synchronous embedding and welding precision of the internal welding connector in the antenna forming process are ensured, the one-time co-curing forming of the electrical unit, the structural unit and the connector in the multilayer strip line antenna is realized, the defects of multiple forming curing times, easy deformation in forming and the like of the conventional multilayer strip line antenna are overcome, and the high-precision and short-period production of the large-size strip line antenna is realized.
Description
Technical Field
The invention belongs to the field of antennas and processing and manufacturing thereof, and relates to a multi-layer composite material strip line antenna and an integrated forming method thereof, which are mainly applied to a microwave array antenna system with requirements of light weight, large size and high precision, such as radar, communication and the like
Background
The strip line antenna has a series of advantages of low cost, low sidelobe, easy array forming and the like, and is widely applied to the fields of radars, mobile communication, aerospace and the like. Stripline antennas are typically composed of electrical elements, structural elements, and connectors. The electric unit is composed of a micro-strip substrate such as a reflecting plate and a circuit board and low-dielectric-property materials and plays a role in transmitting and receiving electromagnetic signals. The structural unit is made of non-metal composite materials and plays a role in supporting and protecting the electric unit. The connector needs to be reliably connected to a circuit board in the electrical unit to transmit signals.
At present, two manufacturing processes are generally used for the stripline antenna. A forming method is that a structural unit is firstly cured and formed independently, then is bonded and formed with an electric unit for the second time, and finally forms a strip line antenna, and a specific forming method of the strip line antenna is disclosed in a comparison document 1 (research on composite forming technology of multi-layer microstrip antenna, Weisheng, electronic technology, 295 plus 297), and the process of the method comprises the following steps: the structural unit composed of the carbon fiber/honeycomb sandwich layer is firstly cured and molded independently, and then is bonded and molded with the electrical unit composed of foam, a microstrip substrate and the like for the second time, and finally the strip line antenna is formed. Another forming method is that the electrical unit is cured and welded with the connecting device for multiple times and then is bonded and formed with the structural unit for two times to form the strip line antenna, and the comparison document 2(CN102157786A) discloses a second forming method of the strip line antenna, in which the electrical unit is bonded with the connecting device after 3 times of curing and forming, such as bonding of a semi-finished product 1, bonding of a semi-finished product 2, and integral bonding of the semi-finished products 1 and 2, and then is welded with the connecting device, and finally is cured and formed with the structural unit for 4 times to form the strip line antenna.
The processing and manufacturing method of the strip line antenna has the following defects:
(1) when the structural unit or the electrical unit is formed at high temperature independently and then bonded and cured for two times, the strip line antenna is easy to generate thermal deformation in the manufacturing process due to different thermal expansion coefficients of materials of all layers, and is not suitable for processing and manufacturing the structural unit of the strip line antenna with large size and high precision.
(2) The processing process of the strip line antenna needs to be cured and formed for multiple times, the defects of long manufacturing period, difficulty in controlling secondary bonding precision and the like exist, and the processing requirement of the strip line antenna on the short production period cannot be met.
The design requirement of a certain product strip line antenna meets the indexes of high dimensional accuracy, short production period and the like, and the existing strip line processing technique can not meet the application requirement.
Disclosure of Invention
Technical problem to be solved
The invention aims to overcome the defects of the existing strip line antenna processing technique, and realizes one-time co-curing molding of an electrical unit, a structural unit and a connector through the technical means of welding the connector and a reflective microstrip substrate in advance, pre-embedding the connector on a molding die and the like, so that a novel strip line antenna integrated molding technical method is obtained, the defects of processing deformation, long processing period and the like existing in the existing strip line antenna molding method are overcome, and the requirements of the strip line antenna on high dimensional accuracy and short production period indexes are met.
Technical scheme
A multi-layer composite material strip line antenna comprises a structural unit, an electrical unit and a connector, wherein the electrical unit consists of a lower reflection microstrip substrate, a line microstrip substrate, an upper reflection microstrip substrate, 4 layers of adhesive films and 2 layers of foams; the structural unit consists of 2 layers of skins; the skin, the lower reflection microstrip substrate, the adhesive film, the foam, the adhesive film, the circuit microstrip substrate, the adhesive film, the foam, the adhesive film, the upper reflection microstrip substrate and the skin are sequentially placed from bottom to top; the connector is characterized by comprising a connector support, a connector plug, a connector lower pressing plate and a connector upper pressing plate, wherein the connector plug is arranged on the connector support, and an inner core of the connector plug is welded with the circuit microstrip substrate; the upper pressing plate of the connector is fixedly connected with the upper reflection microstrip substrate and the connector support, and the lower pressing plate of the connector is fixedly connected with the lower reflection microstrip substrate and the connector support.
The further technical scheme of the invention is as follows: the connector support comprises a lower boss, a round hole for installing a connector plug is arranged in the middle of the lower boss, 4 threaded holes are formed in the periphery of the round hole, an upper cross beam and a lower cross beam are respectively arranged on one side of the lower boss, and cylinders with threaded holes are arranged at two ends of the same side.
The further technical scheme of the invention is as follows: the adhesive film is an epoxy low-dielectric adhesive film with the thickness of 50 mu m, the loss tangent of 0.004-0.008 and the curing temperature of 125-135 ℃.
The further technical scheme of the invention is as follows: the skin is made of aramid fiber/epoxy composite material, the thickness of the skin is 0.15mm, the loss tangent of the skin is 0.01-0.016, and the curing temperature is 125-135 ℃.
The further technical scheme of the invention is as follows: the foam is PMI foam, and the loss tangent is 0.0001-0.0006.
An integrated forming die of a multi-layer composite material strip line antenna is characterized by comprising a forming die and a welding tool; the forming die is of a flat plate structure, and the upper surface of the forming die is provided with a positioning pin and a groove structure, wherein the positioning pin is used for being matched with the lower reflection microstrip substrate, the line microstrip substrate and the upper reflection microstrip substrate, and the groove structure is used for installing a connector; the length of the groove structure is consistent with that of the connector support, the width of the groove structure is the sum of the width of the lower boss of the connector support and the width of the lower pressing plate of the connector, and the depth of the groove structure is consistent with that of the lower boss of the connector support; the welding tool is of a flat plate structure, the edge part of the upper surface of the welding tool is provided with a convex structure, and the middle part of the welding tool is provided with a concave structure; the protruding structure is used for welding and positioning the lower reflection microstrip substrate, and the height of the protruding structure is 1mm larger than the thickness of the lower reflection microstrip substrate; the concave structure is used for welding and positioning the connector support, and the length, the width and the depth of the concave structure are consistent with the size of the connector support.
The further technical scheme of the invention is as follows: the forming mold is of a hollow structure.
The further technical scheme of the invention is as follows: the forming die is made of 45 steel.
The further technical scheme of the invention is as follows: the welding tool is made of a vermiculite material with a heat conductivity coefficient of 0.05W/m.k.
An integrated forming method of a multi-layer composite material strip line antenna is characterized by comprising the following steps:
step 1: the connector support is placed in the concave structure on the welding tool, and the lower beam of the connector support is coated with soldering paste;
step 2: the lower reflection microstrip substrate is placed on the upper surface of the welding tool, the lower connector pressing plate is placed on the reflection microstrip substrate, the lower reflection microstrip substrate, the connector support and the lower connector pressing plate are connected through threads, and then the lower reflection microstrip substrate and a lower cross beam of the connector support are welded into an intermediate piece through lead-tin soldering;
and step 3: after the forming die is paved with the isolating film, sequentially paving the skin, the intermediate piece, the adhesive film, the foam, the adhesive film and the line microstrip substrate; wherein the connector part of the intermediate piece is positioned in the groove structure of the forming die;
and 4, step 4: after the connector plug is connected with the connector support through threads, the connector plug and the line microstrip substrate are welded together through lead tin;
and 5: sequentially laying an adhesive film, foam, an adhesive film and an upper reflection microstrip plate on the line microstrip substrate;
step 6: solder paste is coated on the upper beam of the connector support;
and 7: the upper reflection microstrip substrate is connected with the upper pressing plate of the connector through threads, and then the upper reflection microstrip substrate and the upper cross beam of the connector support are welded into a whole through lead-tin soldering;
and 8: sequentially laying skin, an isolating film, a tool pressing plate and an air-permeable felt, sealing a vacuum bag, and heating and curing according to curing parameters;
and step 9: and after the solidification is finished, cutting edges and sealing edges to obtain a final product.
Advantageous effects
The invention provides an integrated forming die and a forming method for a multilayer composite material strip line antenna, which ensure the synchronous embedding and welding precision of an internal welding connector in the antenna forming process through a welding tool and a groove structure designed on the forming die, realize one-time co-curing forming of an electric unit, a structural unit and a connector in the multilayer strip line antenna, and overcome the defects of multiple forming curing times, easy forming and the like of the traditional multilayer strip line antenna. The results of hundreds of sets of samples of a certain military model show that: the strip line antenna prepared by the method has high dimensional precision, short production period and stable and reliable quality.
Drawings
The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the invention, wherein like reference numerals are used to designate like parts throughout.
FIG. 1 is a schematic diagram of a stripline antenna configuration;
FIG. 2 is a schematic view of a plug support structure;
FIG. 3 is a schematic view of a molding die;
FIG. 4 is a schematic structural view of a welding tool;
figure 5 is a schematic view of the forming process according to the invention.
In the drawings, 1-connector holder; 2-welding a tool; 3-a lower beam of the connector support; 5-lower reflection microstrip substrate; 6-connector lower press plate; 7-an intermediate piece; 8-forming a mould; 9-covering; 10-glue film; 11-foam; 12-a line microstrip substrate; 13-a connector plug; 14-upper reflective microstrip plate; 15-upper beam of connector support; 16-connector upper platen; 17-tool pressing plate; 18-a locating pin; 19-groove structure of forming mould; 20-lower boss of connector holder; t: the height of the lower boss; v: the width of the lower boss.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The multi-layer composite material strip line antenna consists of a structural unit, an electrical unit and a connector, wherein the electrical unit consists of a lower reflection microstrip substrate 5, a line microstrip substrate 12, an upper reflection microstrip substrate 14, 4 layers of adhesive films 10 and 2 layers of foams 11; the structural unit consists of 2 layers of skins 9; the skin 9, the lower reflection microstrip substrate 5, the glue film 10, the foam 11, the glue film 10, the line microstrip substrate 12, the glue film 10, the foam 11, the glue film 10, the upper reflection microstrip substrate 14 and the skin 9 are sequentially placed from bottom to top; the connector is composed of a connector holder 1, a connector plug 13, a connector lower press plate 6, and a connector upper press plate 16. The connector support 1 comprises a lower boss 20, the lower boss 20 is of a vertical cuboid structure, a round hole is arranged in the middle of the lower boss 20, 4 threaded holes are formed in the periphery of the round hole, an inner core of a connector plug 13 penetrates through the round hole, four holes of a flange plate of the connector plug 13 are aligned with the 4 threaded holes and then fixed together by screws, an upper cross beam 15 and a lower cross beam 3 are respectively arranged on one side of the lower boss 20, the upper cross beam 15 and the lower cross beam 3 are respectively positioned at the upper position and the lower position of the upper threaded hole and the lower threaded hole, a cylinder body with threaded holes is arranged at two ends of the same side of the upper cross beam 15 and the lower cross beam 3, one end of the cylinder body is fixed with a lower reflection microstrip substrate 5 and a connector lower pressing plate 6 by screws during assembly, the other end of the cylinder body is fixed with an upper reflection microstrip substrate 14 and a connector upper pressing plate 16 by screws during assembly, and the connector lower pressing plate 6 is lifted to enable the lower reflection microstrip substrate 5 to be stably contacted with the connector support 1, the connector upper press plate 16 functions to stabilize the contact of the upper reflection microstrip substrate 14 with the connector upper press plate 16, thereby ensuring the grounding performance of the stripline.
The invention also provides an integrated forming die for the multi-layer composite material strip line antenna, which consists of a forming die 8 and a welding tool 2; the forming die 8 is of a flat plate structure welded by the integral frame; the corresponding positions are respectively provided with a positioning pin 18 and a groove structure 19; the positioning pins 18 are used for accurately positioning the multi-layer microstrip substrate during high-temperature molding, positioning holes matched with the positioning pins 18 are formed in the same positions of the lower reflection microstrip substrate 5, the line microstrip substrate 12 and the upper reflection microstrip substrate 14, and the number of the positioning pins 18 is multiple; the groove structures 19 are used for accurately positioning in the connector forming process, the length of the groove structures 19 is consistent with that of the connector support 1, the width of the groove structures is the sum of the width v of the lower boss 20 of the connector support 1 and the width of the lower pressing plate 6 of the connector, the depth of the groove structures is consistent with the height t of the lower boss 20 of the connector support 1, and the number of the groove structures is the same as the number of input ports of the strip line antenna. The welding tool 2 is used for lead-tin welding of the lower reflection microstrip substrate 5 and the connector support 1, and is of a flat plate structure, the length of the welding tool is 200mm greater than that of the connector support 1, and the width of the welding tool is consistent with that of the lower reflection microstrip substrate 5; the edge part of the upper surface of the welding tool 2 is provided with a convex structure, and the middle part is provided with a concave structure; the protruding structure is used for welding and positioning the lower reflection microstrip substrate 5, and the height of the protruding structure is 1mm larger than the thickness of the lower reflection microstrip substrate 5; the concave structure is used for welding and positioning the connector support 1, and the length, the width and the depth of the concave structure are consistent with the size of the connector support 1.
The invention also provides an integrated molding method of the multi-layer composite material strip line antenna, which adopts the integrated molding die and specifically comprises the following steps:
step 1: the connector support 1 is placed on the welding tool 2, and the lower beam 3 of the connector support 1 is coated with soldering paste;
step 2: the lower reflection microstrip substrate 5 is placed on the welding tool 2, is in threaded connection with the lower pressing plate 6 of the connector, and is welded with the lower beam 3 of the connector support 1 to form an intermediate part 7 through lead-tin welding;
and step 3: after an isolation film is laid on the forming die 8, sequentially laying a skin 9, an intermediate piece 7, a glue film 10, foam 11, a glue film 10 and a circuit microstrip substrate 12; wherein the connector part of the intermediate piece is located in the recess structure 19 of the forming die 8;
and 4, step 4: after the connector plug 13 is connected with the connector support 1 through threads, the connector plug 13 and the line microstrip substrate 12 are welded together through lead-tin welding;
and 5: a glue film 10, foam 11, a glue film 10 and an upper reflection microstrip plate 14 are laid on the line microstrip substrate 12 in sequence;
step 6: solder paste is coated on the upper beam 15 of the connector support 1;
and 7: the upper reflection microstrip substrate 14 is connected with an upper pressure plate 16 of the connector in a threaded manner, and then the upper reflection microstrip substrate 14 and an upper beam 15 of the connector support 1 are welded into a whole through lead-tin soldering;
and 8: sequentially laying the skin 9, the isolating film, the tool pressing plate 17 and the air-permeable felt, sealing the vacuum bag, and heating and curing according to curing parameters; the tooling pressing plate 17 is an aluminum plate with the same size as the upper reflection microstrip substrate 14;
and step 9: and after the solidification is finished, cutting edges and sealing edges to obtain a final product.
Example 1:
referring to fig. 1, the antenna is a foam C sandwich structure, and is composed of 11 layers of materials, such as 4 layers of adhesive films 10, 2 layers of foams 11, 2 layers of skins 9, 1 lower reflection microstrip plate 5, 1 upper reflection microstrip plate 14, 1 line microstrip substrate 12, and the like. The same side of the antenna is provided with 3 connectors, and each connector consists of a plug support 1, a connector plug 13, a connector lower pressure plate 6 and a connector upper pressure plate 16. The size of the antenna is 3054mm multiplied by 200mm multiplied by 11mm, the flatness of the antenna is required to be within 0.1mm, and the sidelobe level is below minus 28db (1 GHz-10 GHz). Wherein the adhesive film 10 is an epoxy low dielectric adhesive film with the thickness of 50 μm, the loss tangent of 0.004-0.008 (1 GHz-10 GHz), and the curing temperature of 125-135 ℃; the skin 9 is made of aramid fiber/epoxy composite material, the thickness is 0.15mm, the loss tangent is 0.01-0.016 (1 GHz-10 GHz), and the curing temperature is 125-135 ℃; the foam 11 is a PMI foam and has a loss tangent of 0.0001 to 0.0006(1GHz to 10 GHz).
Referring to fig. 2, the connector holder 1 is made of aluminum material 2a12 and is plated with silver.
Referring to fig. 3, the forming mold 8 is a frame tailor-welded structure, and is processed into a hollow structure to reduce weight, and is made of 45 steel, a positioning pin 18 and a groove structure 19 are arranged at a corresponding position of the forming mold 8, the positioning pin 8 is used for accurately positioning an electrical unit in an antenna in a high-temperature forming process, and the groove structure 19 is used for accurately positioning a forming process of the connector support 1. The length of the groove structure 19 is consistent with that of the plug support 1, the width of the groove structure 19 is the sum of the width v of the lower boss 20 of the connector support 1 and the width of the lower pressing plate 6 of the connector, and the depth of the groove structure 19 is consistent with the height t of the lower boss 20 of the connector support 1.
Referring to the attached figure 4, the welding tool 2 is of a flat plate structure, is made of vermiculite material with low thermal conductivity coefficient, and is 0.05W/m.k. The length of the welding tool 2 is 200mm larger than that of the connector support 1, and the width of the welding tool is consistent with that of the lower reflection microstrip substrate 5; the edge part of the upper surface of the welding tool 2 is provided with a convex structure, and the middle part is provided with a concave structure; the protruding structure is used for welding and positioning the lower reflection microstrip substrate 5, and the height of the protruding structure is 1mm larger than the thickness of the lower reflection microstrip substrate 5; the concave structure is used for welding and positioning the connector support 1, and the length, the width and the depth of the concave structure are consistent with the size of the connector support 1.
While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and various equivalent modifications or substitutions can be easily made by those skilled in the art within the technical scope of the present disclosure.
Claims (10)
1. A multi-layer composite material strip line antenna comprises a structural unit, an electrical unit and a connector, wherein the electrical unit consists of a lower reflection microstrip substrate (5), a line microstrip substrate (12), an upper reflection microstrip substrate (14), 4 layers of adhesive films (10) and 2 layers of foams (11); the structural unit consists of 2 layers of skins (9); the coating (9), the lower reflection microstrip substrate (5), the glue film (10), the foam (11), the glue film (10), the line microstrip substrate (12), the glue film (10), the foam (11), the glue film (10), the upper reflection microstrip substrate (14) and the coating (9) are sequentially placed from bottom to top; the connector is characterized by comprising a connector support (1), a connector plug (13), a connector lower pressing plate (6) and a connector upper pressing plate (16), wherein the connector plug (13) is installed on the connector support (1), and an inner core of the connector plug (13) is welded with a circuit microstrip substrate (12); the connector upper pressing plate (16) is fixedly connected with the upper reflection microstrip substrate (14) and the connector support (1), and the connector lower pressing plate (6) is fixedly connected with the lower reflection microstrip substrate (5) and the connector support (1).
2. The stripline antenna of claim 1, characterized in that the connector support (1) comprises a lower boss (20), a round hole for mounting the connector plug (13) is arranged in the middle of the lower boss (20), 4 threaded holes are arranged around the round hole, an upper beam (15) and a lower beam (3) are respectively arranged on one side of the lower boss (20), and cylinders with threaded holes are arranged on two ends of the same side.
3. The multi-layer composite material strip line antenna as claimed in claim 1, wherein the adhesive film (10) is an epoxy low dielectric adhesive film with a thickness of 50 μm, a loss tangent of 0.004-0.008, and a curing temperature of 125-135 ℃.
4. The stripline antenna of claim 1, characterised in that the skin (9) is an aramid/epoxy composite with a thickness of 0.15mm, a loss tangent of 0.01 to 0.016 and a curing temperature of 125 to 135 ℃.
5. The multi-layer composite stripline antenna as claimed in claim 1, wherein the foam (11) is a PMI foam having a loss tangent of 0.0001 to 0.0006.
6. The integrated forming die of the multilayer composite material strip line antenna is characterized by comprising a forming die (8) and a welding tool (2); the forming die (8) is of a flat plate structure, and the upper surface of the forming die is provided with a positioning pin (18) and a groove structure (19) for mounting a connector, wherein the positioning pin (18) is matched with the lower reflection microstrip substrate (5), the line microstrip substrate (12) and the upper reflection microstrip substrate (14); the length of the groove structure (19) is consistent with that of the connector support (1), the width is the sum of the width of a lower boss (20) of the connector support (1) and the width of a lower pressing plate (6) of the connector, and the depth of the groove structure is consistent with that of the lower boss (20) of the connector support (1); the welding tool (2) is of a flat plate structure, the edge part of the upper surface is provided with a convex structure, and the middle part is provided with a concave structure; the protruding structure is used for welding and positioning the lower reflection microstrip substrate (5), and the height of the protruding structure is 1mm larger than the thickness of the lower reflection microstrip substrate (5); the concave structure is used for welding and positioning the connector support (1), and the length, the width and the depth of the concave structure are consistent with the size of the connector support (1).
7. The integrated forming mold for the multi-layer composite material strip line antenna according to claim 6, characterized in that the forming mold (8) is a hollow structure.
8. The integrated forming mold for the multi-layer composite material strip line antenna according to claim 6, characterized in that the material of the forming mold (8) is 45 steel.
9. The integrated forming die for the multi-layer composite material strip line antenna according to claim 6, characterized in that the welding tool (2) is made of vermiculite material with a thermal conductivity of 0.05W/m.k.
10. The integrated molding method of the multi-layer composite material strip line antenna, which is realized by adopting the molding die of claim 6, is characterized by comprising the following steps:
step 1: the connector support (1) is placed in the concave structure on the welding tool (2), and the lower beam (3) of the connector support (1) is coated with soldering paste;
step 2: the lower reflection microstrip substrate (5) is placed on the upper surface of the welding tool (2), the connector lower pressing plate (6) is placed on the reflection microstrip substrate (5), the lower reflection microstrip substrate (5), the connector support (1) and the connector lower pressing plate (6) are connected through threads, and then the lower reflection microstrip substrate (5) and a lower cross beam (3) of the connector support (1) are welded into an intermediate piece through lead-tin soldering;
and step 3: after an isolation film is laid on the forming die (8), sequentially laying a skin (9), an intermediate piece, a glue film (10), foam (11), a glue film (10) and a circuit microstrip substrate (12); wherein the connector part of the intermediate piece is located in a recess structure (19) of the forming die (8);
and 4, step 4: after the connector plug (13) is connected with the connector support (1) through threads, the connector plug (13) is welded with the line microstrip substrate (12) through lead-tin solder;
and 5: a glue film (10), foam (11), a glue film (10) and an upper reflection microstrip plate (14) are laid on the line microstrip substrate (12) in sequence;
step 6: solder paste (4) is coated on the upper beam (15) of the connector support (1);
and 7: the upper reflection microstrip substrate (14) is connected with the upper pressure plate (16) of the connector in a threaded mode, and then the upper reflection microstrip substrate (14) and an upper cross beam (15) of the connector support (1) are welded into a whole through lead-tin soldering;
and 8: sequentially laying a skin (9), an isolating film, a tool press plate and an air felt, sealing a vacuum bag, and heating and curing according to curing parameters;
and step 9: and after the solidification is finished, cutting edges and sealing edges to obtain a final product.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114899586A (en) * | 2022-04-25 | 2022-08-12 | 中国电子科技集团公司第三十八研究所 | Microstrip oscillator antenna of cantilever installation |
| CN115331965A (en) * | 2022-08-05 | 2022-11-11 | 新疆众和股份有限公司 | Electrode foil, preparation method thereof and capacitor |
| CN115319416A (en) * | 2022-08-19 | 2022-11-11 | 中国电子科技集团公司第三十八研究所 | High-efficiency millimeter wave multilayer antenna low-temperature brazing method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003073556A1 (en) * | 2002-02-28 | 2003-09-04 | Molex Incorporated | Low profile antenna and interconnect |
| US6727855B1 (en) * | 2002-11-21 | 2004-04-27 | The United States Of America As Represented By The Secretary Of The Army | Folded multilayer electrically small microstrip antenna |
| CN102117948A (en) * | 2010-12-28 | 2011-07-06 | 中国兵器工业第二○六研究所 | Strip line waveguide made of composite material |
| US20120262254A1 (en) * | 2009-10-14 | 2012-10-18 | Landis+Gyr Ag | Antenna Coupler |
| CN107959107A (en) * | 2017-10-27 | 2018-04-24 | 中国船舶重工集团公司第七二三研究所 | A kind of coaxial feed millimeter wave antenna based on the conversion of thickness strip line |
| US20200382198A1 (en) * | 2017-03-22 | 2020-12-03 | Nxgen Partners Ip, Llc | Re-generation and re-transmission of millimeter waves using roof mounted cpe unit |
-
2021
- 2021-10-22 CN CN202111231603.9A patent/CN114094317B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003073556A1 (en) * | 2002-02-28 | 2003-09-04 | Molex Incorporated | Low profile antenna and interconnect |
| US6727855B1 (en) * | 2002-11-21 | 2004-04-27 | The United States Of America As Represented By The Secretary Of The Army | Folded multilayer electrically small microstrip antenna |
| US20120262254A1 (en) * | 2009-10-14 | 2012-10-18 | Landis+Gyr Ag | Antenna Coupler |
| CN102117948A (en) * | 2010-12-28 | 2011-07-06 | 中国兵器工业第二○六研究所 | Strip line waveguide made of composite material |
| US20200382198A1 (en) * | 2017-03-22 | 2020-12-03 | Nxgen Partners Ip, Llc | Re-generation and re-transmission of millimeter waves using roof mounted cpe unit |
| CN107959107A (en) * | 2017-10-27 | 2018-04-24 | 中国船舶重工集团公司第七二三研究所 | A kind of coaxial feed millimeter wave antenna based on the conversion of thickness strip line |
Non-Patent Citations (4)
| Title |
|---|
| ANDREY MOZHAROVSKIY ET AL.: "Effective Utilization of Coaxial Connector for Millimeter Wave Multilayer Device Testing", 《PROCEEDINGS OF THE 43RD EUROPEAN MICROWAVE CONFERENCE》 * |
| 李丽娴等: "多层带状线和差一体化网络的实现", 《电磁场与微波》, vol. 46, no. 9 * |
| 王元源等: "一种低剖面宽带缝隙耦合天线", 《火控雷达技术》, vol. 46, no. 3 * |
| 袁博等: "应用于毫米波无线接收系统的高集成化LTCC AIP设计", 《红外与毫米波学报》, vol. 32, no. 1 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114899586A (en) * | 2022-04-25 | 2022-08-12 | 中国电子科技集团公司第三十八研究所 | Microstrip oscillator antenna of cantilever installation |
| CN115331965A (en) * | 2022-08-05 | 2022-11-11 | 新疆众和股份有限公司 | Electrode foil, preparation method thereof and capacitor |
| CN115319416A (en) * | 2022-08-19 | 2022-11-11 | 中国电子科技集团公司第三十八研究所 | High-efficiency millimeter wave multilayer antenna low-temperature brazing method |
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