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Axial ratio optimization method of rotating circular polarization microstrip array antenna in wide-angle scanning state

A technology of microstrip array and optimization method, which is applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems of cumbersome theoretical calculations, and achieve excellent axial ratio characteristics, excellent gain and back lobe level, and time low cost effect

Inactive Publication Date: 2016-11-09
10TH RES INST OF CETC
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Problems solved by technology

However, after the antenna array is formed, there will be mutual coupling between the units, and the mutual coupling effect will make the theoretical calculation using the above method extremely cumbersome.

Method used

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  • Axial ratio optimization method of rotating circular polarization microstrip array antenna in wide-angle scanning state
  • Axial ratio optimization method of rotating circular polarization microstrip array antenna in wide-angle scanning state
  • Axial ratio optimization method of rotating circular polarization microstrip array antenna in wide-angle scanning state

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Embodiment Construction

[0016] refer to figure 1 . According to the present invention, after the design of the circularly polarized microstrip array antenna composed of circularly polarized microstrip patches is completed, firstly, in the HFSS simulation software, a rotating circularly polarized microstrip with circularly polarized microstrip patches as array elements is established. The array antenna simulation model uses the MATLAB program to automatically calculate the excitation phase required for each array element according to the different beam directions of the antenna. The calculation results saved and output by MATLAB are directly loaded into the simulation model by the simulation data processing module Edit Source of the 3D simulation software HFSS for simulation Calculate and output the axial ratio simulation results of the array antenna in the wide-angle scanning state according to the simulation model, and judge whether the axial ratio of the antenna meets the requirements. The far-fie...

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Abstract

The invention provides an axial ratio optimization method of a rotating circular polarization microstrip array antenna in a wide-angle scanning state. By means of the method, the axial ratio of the rotating circular polarization microstrip array antenna in the wide-angle scanning state can be remarkably improved, and a high antenna gain and back lobe level can be achieved. The method includes the steps that an array antenna simulation model is established in simulation software, namely, an HFSS (High Frequency Structure Simulator); simulation calculation is conducted on the array antenna in the wide-angle scanning state, and targeted to any beam pointing, orthogonal electric field data of all array elements in all units is stored and output through a VBscript program; then, a 2*2 sub-array serves as a calculation unit, array element electric field data serves as the basis, and the excitation amplitude and the excitation phase actually required by all the array elements in all the units meeting the circular polarization condition are calculated through a MATLAB (matrix laboratory) program; an HFSS simulation data processing module directly loads the excitation amplitude and the excitation phase actually required by all the units and stored and output by the MATLAB to conduct simulation calculation again, and axial ratio optimization is achieved.

Description

technical field [0001] The invention relates to an axial ratio optimization method of a rotating circularly polarized microstrip array antenna with a circularly polarized microstrip patch as an array element in a wide-angle scanning state. Background technique [0002] With the continuous development of science and technology and society, the performance requirements of antennas are getting higher and higher. In modern wireless application systems, ordinary linearly polarized antennas are difficult to meet people's needs. The application of circularly polarized antennas is becoming more and more more and more widely. The advantage of the circularly polarized microstrip antenna is that it can receive any form of polarized electromagnetic wave, and any kind of polarized receiving antenna can receive the circularly polarized wave emitted by it. The excellent anti-interference performance of circularly polarized antennas makes them play a pivotal role in millimeter-wave radio c...

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/367
Inventor 李佳美
Owner 10TH RES INST OF CETC
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