Design method of conformal array antenna with special-shaped curved surface for vehicle-mounted platform
A technology of special-shaped curved surface and design method, which is applied to antennas, antenna components, antenna arrays that are energized separately, etc., can solve problems such as poor performance, high height, and rapid gain drop, and achieve the effect of reducing the vertical size
Active Publication Date: 2022-04-01
10TH RES INST OF CETC
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Problems solved by technology
The conformal array in the form of a spheroid has superior performance, and the fluctuation of the gain in all directions is the smallest, but its height is high, and it is easy to exceed the transportation height limit
The truncated spherical conformal array has the lowest height, but its performance is poor, and the gain in the zenith direction drops faster
The ellipsoidal conformal array has a balance in performance and height, but it still does not meet the design requirements
Therefore, there is currently no perfect and mature conformal array that can meet the engineering realization requirements under the vehicle platform.
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[0016] refer to Figure 1-Figure 4 . According to the present invention, the conformal array flow pattern of the special-shaped curved surface is divided into a parabolic part, a part spherical part and a cylindrical part, and an xyz three-dimensional Cartesian coordinate system is established at the azimuth angle φ=0° of each layer in the pitch direction, and a parabolic cylindrical surface is constructed. The conformal array of special-shaped curved surfaces, the top of the spherical part is a parabolic part, which is the first layer, and the lower part of the parabolic part is a part of the spherical part connected to the cylindrical surface with a circular arc transition, and the parabolic part is divided into N from top to bottom 1θi layers, the spherical part from the upper spherical layer 1 to the lower N 2θi layer, the cylinder part is from the first layer of the upper cylinder to the lower layer, and the flow pattern of the special-shaped curved surface array compose...
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The invention discloses a method for designing a conformal array antenna with a special-shaped curved surface for a vehicle-mounted platform, aiming to provide an antenna design method that can significantly reduce the height of the array and realize full-space measurement and control communication under the vehicle-mounted platform. The present invention is realized through the following technical scheme: according to the array flow pattern of the special-shaped curved surface of the parabolic sphere, an xyz three-dimensional rectangular coordinate system is established, and the flow pattern of the conformal array of the special-shaped curved surface is divided into a paraboloid part, a part spherical part and a cylindrical part, and the lower part of the paraboloid The circular arc transition is used to connect the cylinders to obtain the flow pattern of the special-shaped curved surface array formed by the parabolic cylinder; on the basis of the flow pattern of the special-shaped curved surface array, the antenna sub-array is constructed according to the rule that the antenna elements in the antenna sub-array are evenly arranged at half wavelength. Establish a special-shaped curved surface antenna array based on the curved surface sub-array; then use the curved surface sub-array as the basic unit, arrange the antenna sub-arrays on the special-shaped curved surface conformal array, and follow the arrangement rules of the center of the equal-area area to obtain the curved surface sub-array based on shaped curved antenna array.
Description
technical field [0001] The invention belongs to the technical field of antennas, and relates to a method for arranging a full-space special-shaped curved surface conformal array antenna applied to a vehicle-mounted platform with limited space. Background technique [0002] With the development of my country's aerospace industry, the number of aircraft in space, near space, and in the air is increasing, and multi-target measurement and control in the entire airspace has become a prominent problem in the field of aerospace measurement and control. Whether it is a ground-based multi-target TT&C system or a space-based TT&C network system, an efficient antenna system is a key subsystem to ensure effective TT&C management for multiple targets. A typical ground station needs one or more high-performance antenna systems, which can maintain continuous tracking, measurement and control of measurement and control targets in the entire airspace. The planar phased array can realize the...
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IPC IPC(8): H01Q21/20H01Q1/32
CPCH01Q21/20H01Q1/3216
Inventor 杨龙周文涛刘田仇三山曾富华
Owner 10TH RES INST OF CETC