High-temperature-resistant built-in broadband antenna
By adopting a metal waveguide cavity and a symmetrical matrix structure in the microstrip antenna, combined with the sliding connection and return spring mechanism, the resonant offset and insufficient bandwidth of the microstrip antenna in the high temperature environment is solved, and a stable application of wide frequency at high temperature is achieved.
Patent Information
- Application Number
- CN202420225420.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-30
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-01-30
AI Technical Summary
Existing microstrip antennas are prone to resonance offset and insufficient bandwidth in high-temperature environments, and it is difficult to meet the wide frequency application requirements in high-temperature environments.
The pure metal material of metal waveguide cavity and floor design is designed with high temperature resistance, which improves bandwidth through a symmetrical matrix structure, and simplifies structure and improves stability using sliding connection and return spring mechanisms.
It realizes the stable resonant performance under high temperature environment, and expands the operating frequency range of the antenna to meet the needs of high temperature and wide frequency applications, while avoiding the use of screw fasteners and improving stability.
Smart Images
Figure CN222690897U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of antennas, in particular to a high-temperature resistant built-in broadband antenna. Background Art
[0002] The high temperature resistant built-in broadband antenna is a new type of S-band high temperature resistant broadband antenna designed to meet the high temperature resistant development requirements of missile-borne devices. This antenna avoids the resonance offset and high temperature resistance limitations caused by the previous microstrip antenna dielectric substrate in a high temperature environment. By using the metal waveguide cavity and the pure metal material of the floor, the maximum temperature that can be withstood can reach more than 1200°C. And by improving the previous relatively narrow bandwidth microstrip patch antenna structure to a symmetrical array structure, the bandwidth is increased, so that the antenna can work in a wider frequency range to meet the application requirements.
[0003] The high temperature resistant internal broadband antenna consists of three parts: symmetrical array arms, waveguide cavity, and metal floor. Compared with the previous separate design of the spring-mounted antenna, it is simpler and avoids the use of screw fasteners. It has higher stability and is easy to install and disassemble the array arms and waveguide cavity, making it easier to replace the array arms. Utility Model Content
[0004] In view of the deficiencies in the prior art, the utility model provides a high-temperature resistant built-in broadband antenna, which has the advantages of being simpler in performance, avoiding the use of screw fasteners, and having higher stability. It is also convenient for installing the waveguide cavity and replacing the two arms of the array, thereby solving the problems raised in the above-mentioned background technology.
[0005] The utility model provides the following technical solution: a high-temperature resistant built-in broadband antenna, comprising a metal base plate, the top of the metal base plate is slidably connected to a fixing device, the fixing device comprises a hand-held pull rod, one end of the hand-held pull rod is welded and fixed with a clamping block slidably connected to the inner wall of the metal base plate, the outer wall of the hand-held pull rod is slidably sleeved with a first reset spring slidably connected to the inner wall of the metal base plate, the top of the metal base plate is slidably connected to a waveguide cavity, and the outer wall of the waveguide cavity is provided with a clamping groove slidably connected to the outer wall of the clamping block.
[0006] As a preferred technical solution of the utility model, a mounting groove is provided on the top of the metal bottom plate, and the inner wall of the mounting groove is slidably connected to the outer wall of the waveguide cavity.
[0007] As a preferred technical solution of the utility model, a limit groove is provided at the position where the inner wall of the metal bottom plate is connected to the clamping block, and a limit block is provided for the movement of the clamping block in the limit groove, and the diameter of the limit block is larger than the diameter of the limit groove provided on the inner wall of the metal bottom plate. A slide groove is provided at the position where the top of the metal bottom plate is connected to the hand-held pull rod.
[0008] As a preferred technical solution of the utility model, a cross-shaped installation groove is opened on the top of the metal base plate, and the inner wall of the cross-shaped installation groove is slidably connected with symmetrical array arms, and round rods of symmetrical length are arranged on the top of the symmetrical array arms.
[0009] As a preferred technical solution of the utility model, a limiting device is provided on the inner wall of the metal base plate, and the limiting device includes a fixing rod and a circular groove. A limiting plate slidably connected to the inner wall of the circular groove is welded and fixed to the outer wall of the fixing rod, and a second return spring is slidably sleeved on the part of the fixing rod located in the inner wall of the circular groove.
[0010] As a preferred technical solution of the utility model, the diameter of the limit plate is larger than the diameter of the circular groove, and the outer wall of the second return spring is slidably connected to the inner wall of the circular groove.
[0011] As a preferred technical solution of the utility model, one end of the fixing rod away from the circular groove is slidably connected to the inner wall of the through groove provided on the outer wall of the double arms of the symmetrical array, and one end of the fixing rod is slidably connected to the inner wall of the waveguide cavity.
[0012] Compared with the prior art, the utility model has the following beneficial effects:
[0013] 1. The high temperature resistant built-in broadband antenna has a simpler structure, avoids the use of screw fasteners, and has higher stability. The pure metal structure avoids the resonance offset and high temperature resistance limitations caused by the previous microstrip antenna dielectric substrate in a high temperature environment. The high temperature resistance can reach thousands of degrees. In terms of performance, the relatively narrow bandwidth microstrip dielectric patch structure is improved to a symmetrical array structure to increase the bandwidth, so that the antenna can work in a wider frequency range to meet application requirements.
[0014] 2. The high-temperature resistant built-in broadband antenna installs the waveguide cavity in the installation groove opened on the top of the metal bottom plate, so that the outer wall of the waveguide cavity squeezes the card block, and the inner wall of the waveguide cavity squeezes the fixing rod, and the card block and the fixing rod are forced to move to squeeze the first return spring and the second return spring respectively, thereby increasing the elastic potential energy of the first return spring and the second return spring. In the process of moving the fixed rod, the fixed rod will enter the through groove opened on the outer walls of the two arms of the symmetrical array, and the fixed rod will limit the two arms of the symmetrical array. When the position of the card slot opened on the outer wall of the waveguide cavity moves to correspond to the position of the card block, the elastic potential energy of the first return spring is used to push the card block into the card slot to achieve the installation and fixation of the waveguide cavity. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;
[0016] Figure 2 This is a schematic diagram of the front section structure of the utility model;
[0017] Figure 3 It is a schematic diagram of the side section structure of the utility model;
[0018] Figure 4 For this utility model Figure 2 Schematic diagram of the structure at A in the middle;
[0019] Figure 5 For this utility model Figure 3 Schematic diagram of the structure at point B in the middle.
[0020] In the figure: 1. Metal bottom plate; 2. Waveguide cavity; 3. Fixing device; 301. Hand-held pull rod; 302. Block; 303. First return spring; 4. Symmetrical array arms; 5. Limiting device; 501. Fixing rod; 502. Limiting plate; 503. Circular groove; 504. Second return spring. DETAILED DESCRIPTION
[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0022] See also Figure 1-5 A high temperature resistant internal broadband antenna comprises a metal bottom plate 1, a fixing device 3 is slidably connected to the top of the metal bottom plate 1, the fixing device 3 comprises a hand-held pull rod 301, a clamping block 302 slidably connected to the inner wall of the metal bottom plate 1 is welded and fixed at one end of the hand-held pull rod 301, a first return spring 303 slidably connected to the inner wall of the metal bottom plate 1 is slidably sleeved on the outer wall of the hand-held pull rod 301, a waveguide cavity 2 is slidably connected to the top of the metal bottom plate 1, and the outer wall of the waveguide cavity 2 is provided with an outer wall of the clamping block 302 The slidably connected slot installs the waveguide cavity 2 in the installation slot opened on the top of the metal base plate 1, so that the outer wall of the waveguide cavity 2 squeezes the block 302, and the block 302 is forced to move and squeeze the first return spring 303, thereby increasing the elastic potential energy of the first return spring 303. When the position of the slot opened on the outer wall of the waveguide cavity 2 moves to correspond to the position of the block 302, the elastic potential energy of the first return spring 303 is used to push the block 302 into the slot to achieve the installation and fixation of the waveguide cavity 2.
[0023] The top of the metal bottom plate 1 is provided with an installation groove, and the inner wall of the installation groove is slidably connected to the outer wall of the waveguide cavity 2, which is convenient for installing the waveguide cavity 2 and can limit the waveguide cavity 2 to prevent the waveguide cavity 2 from moving left and right during use. A limiting groove is provided at the position where the inner wall of the metal bottom plate 1 is connected to the clamping block 302, and the clamping block 302 is located in a limited block provided for movement in the limiting groove, and the diameter of the limiting block is larger than the diameter of the limiting groove provided on the inner wall of the metal bottom plate 1. A sliding groove is provided at the position where the top of the metal bottom plate 1 is connected to the hand-held pull rod 301, and the limiting block welded and fixed at one end of the clamping block 302 can limit the clamping block 302 to prevent the clamping block 302 from being pushed out of the inner wall of the metal bottom plate 1 under the push of the elastic potential energy of the first reset spring 303.
[0024] A cross-shaped mounting groove is provided at the top of the metal base plate 1, and the inner wall of the cross-shaped mounting groove is slidably connected with a symmetrical array double arm 4. Round rods of symmetrical length are provided on the top of the symmetrical array double arm 4, which can fix the symmetrical array double arm 4, improve the fixing effect of the symmetrical array double arm 4, and maintain the stability of the symmetrical array double arm 4 during use.
[0025] The inner wall of the metal bottom plate 1 is provided with a limiting device 5, which includes a fixing rod 501 and a circular groove 503. A limiting plate 502 is welded and fixed to the outer wall of the fixing rod 501 and is slidably connected to the inner wall of the circular groove 503. The part of the fixing rod 501 located in the inner wall of the circular groove 503 is slidably sleeved with a second return spring 504. The diameter of the limiting plate 502 is greater than the diameter of the circular groove 503. The outer wall of the second return spring 504 is slidably connected to the inner wall of the circular groove 503. The end of the fixing rod 501 away from the circular groove 503 is slidably connected to the inner wall of the through groove provided on the outer wall of the symmetrical array double arms 4. The waveguide cavity 2 is dynamically connected, and one end of the fixing rod 501 is slidably connected to the inner wall of the waveguide cavity 2. The waveguide cavity 2 is installed in the installation groove opened on the top of the metal base plate 1. The inner wall of the waveguide cavity 2 squeezes the fixing rod 501. The fixing rod 501 is forced to move and squeeze the second return spring 504 respectively, so that the elastic potential energy of the second return spring 504 increases. In the process of moving the fixing rod 501, the fixing rod 501 will enter the through groove opened on the outer wall of the symmetrical array double arms 4. The fixing rod 501 limits the symmetrical array double arms 4 to achieve fixed installation of the symmetrical array double arms 4.
[0026] Working principle: when in use, the symmetrical array arms 4 are placed in the cross-shaped installation grooves opened on the top of the metal base plate 1, and the waveguide cavity 2 is installed in the installation grooves opened on the top of the metal base plate 1, so that the outer wall of the waveguide cavity 2 squeezes the block 302, and the inner wall of the waveguide cavity 2 squeezes the fixing rod 501, and the block 302 and the fixing rod 501 are forced to move and squeeze the first return spring 303 and the second return spring 504 respectively, thereby increasing the elastic potential energy of the first return spring 303 and the second return spring 504. In the process of moving the fixing rod 501, the fixing rod 501 will enter the through grooves opened on the outer walls of the symmetrical array arms 4, and the fixing rod 501 will limit the symmetrical array arms 4. When the position of the slot opened on the outer wall of the waveguide cavity 2 moves to correspond to the position of the block 302, the elastic potential energy of the first return spring 303 is used to push the block 302 into the slot to achieve the installation and fixation of the waveguide cavity 2.
[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A high temperature resistant internal broadband antenna, comprising a metal base plate (1), characterized in that: The top of the metal base plate (1) is slidably connected to a fixing device (3), and the fixing device (3) includes a hand-held pull rod (301), one end of which is welded and fixed with a clamping block (302) slidably connected to the inner wall of the metal base plate (1), the outer wall of the hand-held pull rod (301) is slidably sleeved with a first return spring (303) slidably connected to the inner wall of the metal base plate (1), the top of the metal base plate (1) is slidably connected to a waveguide cavity (2), and the outer wall of the waveguide cavity (2) is provided with a clamping groove slidably connected to the outer wall of the clamping block (302).
2. The high temperature resistant internal broadband antenna according to claim 1, characterized in that: A mounting groove is provided on the top of the metal bottom plate (1), and the inner wall of the mounting groove is slidably connected to the outer wall of the waveguide cavity (2).
3. The high temperature resistant internal broadband antenna according to claim 1, characterized in that: A limiting groove is provided at the position where the inner wall of the metal base plate (1) is connected to the clamping block (302); a limiting block is provided for movement of the clamping block (302) in the limiting groove, and the diameter of the limiting block is larger than the diameter of the limiting groove provided on the inner wall of the metal base plate (1); and a sliding groove is provided at the position where the top of the metal base plate (1) is connected to the hand-held pull rod (301).
4. The high temperature resistant internal broadband antenna according to claim 1, characterized in that: A cross-shaped installation groove is provided on the top of the metal bottom plate (1), and the inner wall of the cross-shaped installation groove is slidably connected with symmetrical array arms (4), and round rods of symmetrical length are provided on the top of the symmetrical array arms (4).
5. The high temperature resistant internal broadband antenna according to claim 1, characterized in that: The inner wall of the metal bottom plate (1) is provided with a limiting device (5), the limiting device (5) comprising a fixing rod (501) and a circular groove (503), a limiting plate (502) slidably connected to the inner wall of the circular groove (503) is welded and fixed to the outer wall of the fixing rod (501), and a second return spring (504) is slidably sleeved on the part of the fixing rod (501) located in the inner wall of the circular groove (503).
6. The high temperature resistant internal broadband antenna according to claim 5, characterized in that: The diameter of the limiting plate (502) is greater than the diameter of the circular groove (503), and the outer wall of the second return spring (504) is slidably connected to the inner wall of the circular groove (503).
7. The high temperature resistant internal broadband antenna according to claim 5, characterized in that: One end of the fixing rod (501) away from the circular groove (503) is slidably connected to the inner wall of the through groove provided on the outer wall of the symmetrical array double arms (4), and one end of the fixing rod (501) is slidably connected to the inner wall of the waveguide cavity (2).