An electrically foldable direction-finding antenna array
Through the electric folding structure driven by the electric push rod, flexible adjustment of high-frequency and low-frequency antennas is achieved, solving the problems of complex structure and large power consumption of existing antenna arrays, and is suitable for the application of on-board station antennas.
Patent Information
- Application Number
- CN202411734276.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-04-01
AI Technical Summary
The existing radio direction finding antenna arrays have limited their application and use scenarios on mobile platforms due to their complex structure, large expansion size, heavy weight and large motor power consumption.
An electric folding direction finding antenna array is designed, and the high-frequency antenna lifting and low-frequency antenna expansion and collection are achieved through the telescopic adjustment of the electric push rod, which simplifies the structure, compresses the collection size, and reduces power consumption.
It realizes flexible adjustment of high-frequency and low-frequency antennas of the antenna array, reduces mutual influence, ensures direction finding performance, and greatly compresses the antenna collection height, which is suitable for the application of on-board station antennas.
Smart Images
Figure CN119742565A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of radio direction finding, in particular to an electric folding direction finding antenna array. Background Art
[0002] Radio direction finding is a science closely related to radio engineering, radio science, radio communication technology, computer technology and digital technology. It is an irreplaceable technical means and important content in many important scientific fields of radio navigation and positioning, urban radio communication management, and radio communication reconnaissance in electronic countermeasures.
[0003] Radio direction finding is mainly concerned with determining the geographical location of radio wave radiation sources. It is a process of using radio measurement equipment to determine the angle (or direction angle) between the line connecting the radio radiation source to the observation point and a reference direction by means of the propagation characteristics of radio waves. All system equipment used to complete the above process mainly includes direction finding antennas, input matching networks, receivers, direction finding parameter processors and direction indication output devices, collectively referred to as radio direction finding systems.
[0004] Interferometer direction finding is an important way to achieve radio direction finding. It usually requires a certain number of antenna units to be arranged in a fixed manner. To ensure the performance of the direction finding system, the distance between the antenna units must meet a certain point size distance, which results in a large overall size of the direction finding antenna, limiting the application of the direction finding system in mobile platforms. The conventional solution uses detachable units to solve the problem of antenna miniaturization and adapt to the transportation requirements of mobile carriers. This method will introduce new problems, including the long time for antenna deployment and installation, the repeated disassembly of the vibrator causing reduced sensitivity and reduced system reliability. With the development of mechatronics technology, the automatic deployment mechanism provides a new solution for the miniaturization design of direction finding antennas. The automatic deployment and collection of direction finding antennas can be achieved by controlling the folding and deployment mechanism with a motor, which can effectively reduce the time of manual participation. At the same time, since the direction finding antenna unit does not need to be repeatedly disassembled, the service life of the direction finding antenna is increased. At present, there is little research on the deployment mechanism of the direction finding antenna, which mainly focuses on realizing the deployment and collection function. The deployment structure has the problems of complex structure, large deployment size, heavy weight, and high motor power consumption, which limits the use scenarios of the direction finding antenna. Designing a direction-finding antenna deployment mechanism that is simple in structure, easy to implement, small in size, light in weight, and low in power consumption has become an urgent need to reduce the application limitations of direction-finding systems. Summary of the invention
[0005] The purpose of the present invention is to avoid the shortcomings of the above-mentioned background technology and provide an electric folding direction-finding antenna array. The antenna can simultaneously realize the lifting and lowering of the high-frequency antenna and the extension and retraction of the low-frequency antenna through the telescopic adjustment of the electric push rod, which not only meets the good electrical performance of the direction-finding antenna, but also greatly compresses the storage size of the antenna array. The antenna has the characteristics of good electrical performance and simple system composition, and is suitable for use as a vehicle-mounted station antenna.
[0006] In order to achieve the above object, the technical solution adopted by the present invention is:
[0007] An electric folding direction-finding antenna array comprises a support tube, an electric push rod, a suspension rod, a sliding rod, a horizontal installation rod and an oblique connecting rod;
[0008] The electric push rod is installed in the support tube, and the top flange of the extension rod in the electric push rod is provided with a high-frequency antenna connected thereto; the suspension rod is provided with a plurality of rods, and is evenly distributed outside the support tube, one end of the suspension rod is connected to the middle flange of the extension rod, and the other end is connected to a slider sleeved on the support tube; the slider can slide freely along the central axis of the support tube;
[0009] One end of the horizontal mounting rod is fixed to the outer wall of the support tube, and the other end is connected to the base; each base is provided with a low-frequency antenna unit hinged thereto at both ends; the low-frequency antenna units arrayed on the same circumference constitute a low-frequency antenna;
[0010] The horizontal mounting rod is sleeved with a sliding sleeve, and the sliding sleeve can slide freely along the horizontal mounting rod; one end of the sliding sleeve is hinged to the middle position of the low-frequency antenna unit through an oblique connecting rod a, and the other end is hinged to the slider through an oblique connecting rod b.
[0011] Furthermore, at least one horizontal mounting rod is provided.
[0012] Compared with the background technology, the present invention has the following beneficial effects:
[0013] 1) The present invention achieves the elevation of the high-frequency antenna and the expansion of the low-frequency antenna by extending the electric push rod, so that the antennas of the two frequency bands are spaced apart, reducing the mutual influence between the antennas of the two frequency bands, and ensuring the direction-finding performance of the antenna array. The high-frequency antenna is lowered and the low-frequency antenna is folded by contracting the electric push rod, which greatly reduces the storage height of the antenna, and meets the high mobility requirements of the vehicle-mounted antenna.
[0014] 2) The present invention improves the performance of the direction-finding antenna array by adjusting the number, size and array element spacing of antenna units. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the structure of the electric folding direction-finding antenna array in the unfolded state in an embodiment of the present invention.
[0016] Figure 2It is a schematic structural diagram of the folded state of the electrically foldable direction-finding antenna array in an embodiment of the present invention.
[0017] Figure 3 is a simplified structural diagram of the electric folding direction-finding antenna array in the embodiment of the present invention in the unfolded state;
[0018] Figure 4 It is a simplified structural diagram of the electrically foldable direction-finding antenna array in the folded state in an embodiment of the present invention.
[0019] In the figure: 1. support tube; 2. electric push rod; 3. high-frequency antenna; 4. low-frequency antenna unit; 5. suspension rod; 6. slider; 7. horizontal mounting rod; 8. sliding rod; 9. oblique connecting rod, 41. base. DETAILED DESCRIPTION
[0020] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0021] An electric folding direction-finding antenna array includes a support tube, an electric push rod, a high-frequency antenna, a low-frequency antenna unit (n groups), a suspension rod, a slider, a horizontal mounting rod (n groups), a slider (n groups) and an oblique connecting rod (6n groups). The electric push rod is fixed in the support tube, the high-frequency antenna is installed on the top flange of the electric push rod, and the low-frequency antenna unit is evenly arranged through the horizontal mounting rod. One end of the suspension rod is fixed on the middle flange of the electric push rod, and the other end is connected to the slider, and the slider is coaxial with the electric push rod. The slider is coaxial with the horizontal mounting rod, and the two ends of the slider are respectively connected to the slider and the low-frequency antenna through the oblique connecting rod. When the electric push rod is extended, the high-frequency antenna rises accordingly, and at the same time, the suspension rod drives the slider to rise. The slider pushes the slider to translate outward through the oblique connecting rod, and the slider pushes the oblique connecting rod connected to the low-frequency antenna unit, so that the low-frequency antenna unit can be unfolded. The antenna unfolding and folding actions are opposite to each other, that is, when the electric push rod is shortened, the high-frequency antenna falls accordingly, and at the same time drives the low-frequency antenna unit to fold.
[0022] Reference Figures 1 to 4 , this embodiment includes a support tube, an electric push rod, a high-frequency antenna, a low-frequency antenna unit (7 groups), a suspension rod, a slider, a horizontal mounting rod (7 groups), a slider (7 groups) and an oblique connecting rod (6×7 groups). The electric push rod 2 is fixed in the support tube 1, the high-frequency antenna 3 is installed on the top flange of the electric push rod 2, and the 7 groups of low-frequency antenna units are evenly arranged through the horizontal mounting rod 7. One end of the suspension rod 5 is fixed on the middle flange of the electric push rod 2, and the other end is connected to the slider 6. The slider 6 is coaxial with the electric push rod 2. The slider 8 is coaxial with the horizontal mounting rod 7, and the two ends of the slider 8 are respectively connected to the slider 6 and the low-frequency antenna unit 4 through the oblique connecting rod 9. The high-frequency antenna 3 and the low-frequency antenna unit 4 are connected to the external receiving and transmitting equipment through cables.
[0023] Reference Figure 2The specific operation of antenna array deployment is as follows: the servo motor drives the electric push rod to extend, and the high-frequency antenna rises accordingly. At the same time, the suspension rod drives the slider to rise. The slider pushes the slider to move outward through the oblique connecting rod. The slider pushes the oblique connecting rod connecting the low-frequency antenna unit to enable the low-frequency antenna unit to deploy. When the high-frequency antenna rises to its position, the low-frequency antenna unit is deployed to its position.
[0024] The working principle of the present invention is as follows: When the electric folding direction-finding antenna array is in the parking working state, the antenna array needs to be fully unfolded to make the antenna work well. At this time, the antenna array is adjusted as follows: Figure 1 When driving, the antenna array needs to be folded to reduce the storage size. At this time, the antenna array is adjusted to the following Figure 2 Status shown.
[0025] In summary, the electric folding direction-finding antenna array of the present invention has the characteristics of good broadband performance and simple system composition, and is suitable for use as a vehicle-mounted station antenna.
Claims
1. An electrically foldable direction-finding antenna array, characterized in that: It comprises a support tube (1), an electric push rod (2), a suspension rod (5), a sliding rod (8), a horizontal mounting rod and an oblique connecting rod (9); The electric push rod is installed in the support tube, and the top flange of the extension rod in the electric push rod is provided with a high-frequency antenna (3) connected thereto; the suspension rod is provided with a plurality of suspension rods, which are evenly distributed outside the support tube, one end of the suspension rod is connected to the middle flange of the extension rod, and the other end is connected to a slider (6) sleeved on the support tube; the slider (6) can slide freely along the central axis of the support tube; One end of the horizontal mounting rod is fixed to the outer wall of the support tube, and the other end is connected to the base; each base is provided with a low-frequency antenna unit hinged thereto at both ends; the low-frequency antenna units arrayed on the same circumference constitute a low-frequency antenna; A sliding sleeve (8) is sleeved on the horizontal mounting rod, and the sliding sleeve (8) can slide freely along the horizontal mounting rod; one end of the sliding sleeve is hinged to the middle position of the low-frequency antenna unit through an oblique connecting rod a, and the other end is hinged to the slider through an oblique connecting rod b.
2. The electrically foldable direction-finding antenna array according to claim 1, characterized in that: There is at least one horizontal mounting rod.