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Beam forming algorithm for curved surface conformal circular polarization phased array antenna

A phased array antenna and beamforming technology, which is applied in the direction of separately energized antenna arrays, radio transmission systems, electrical components, etc., can solve the problems that conformal phased array antennas cannot be applied, achieve the best polarization synthesis, and suppress crossover The effect of polarization

Active Publication Date: 2018-04-06
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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Problems solved by technology

Therefore, the planar phased array beamforming algorithm in the prior art can no longer be applied to conformal phased array antennas

Method used

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  • Beam forming algorithm for curved surface conformal circular polarization phased array antenna
  • Beam forming algorithm for curved surface conformal circular polarization phased array antenna
  • Beam forming algorithm for curved surface conformal circular polarization phased array antenna

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[0058] In order to make it easier for those skilled in the art to understand the technical solution of this patent, and at the same time, in order to make the technical purpose, technical solution and beneficial effect of this patent clearer, and to fully support the protection scope of the claims, the following is a specific case in the form of this patent. The technical solution of the patent makes further and more detailed descriptions.

[0059] Such as figure 1 As shown, a surface conformal circularly polarized phased array antenna beamforming algorithm, which includes the following steps:

[0060] Step 1: If figure 2 As shown, the global coordinate system of the surface conformal array and the local coordinate system of the antenna unit are established.

[0061] Taking the spherical conformal array as an example, the radius of the spherical surface is R, and the global coordinate system O-XYZ of the array is established as follows: take the spherical top as the coordin...

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Abstract

The invention discloses a beam forming algorithm for a curved surface conformal circular polarization phased array antenna and belongs to the technical field of a conformal phased array antenna. The algorithm comprises the steps of establishing a global coordinate system of a curved surface conformal array and a local coordinate system of each antenna unit; obtaining a global coordinate, a position vector and a polarization vector of each antenna unit; carrying out calculation to obtain a vector pattern of each antenna unit according to the position vector of each antenna unit and a local pattern of each antenna unit; carrying out calculation to obtain a polarization compensation phase of each channel according to a beam pointing angle and the polarization vector of each antenna unit; andcarrying out total field synthesis on the curved surface conformal circular polarization phased array antenna, thereby obtaining an array pattern. According to the algorithm, through addition of the polarization compensation phase to each channel, the optimum polarization analysis is realized; the algorithm is simple in method, is easy to realize and is fast in calculation speed; the algorithm isparticularly applicable to the circular polarization phased array antenna; and the algorithm has very high engineering application prospect and is the important improvement for the prior art.

Description

technical field [0001] The invention relates to the technical field of conformal phased array antennas, in particular to a beam forming algorithm for curved surface conformal circularly polarized phased array antennas. Background technique [0002] As an electronic system with the array antenna as the main body, the phased array antenna can intelligently control and adjust the amplitude and phase of each array unit through a specific feeding method, so that it is extremely convenient to realize the power combination of the signal in space, and Complete beamforming and inertialess, flexible scanning. [0003] When the unit antennas in the antenna array are distributed on the surface of the electronic system platform and conform to the shape of the carrier platform, a conformal phased array antenna is formed. The conformal phased array has more advantages than the planar phased array: the scanning range is larger, the space utilization rate of the platform is high, and the ae...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/0408H01Q21/20
CPCH01Q21/20H04B7/0408
Inventor 张宙韩国栋段永强
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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