Conformal array antenna excitation phase determining method based on time reversal

A conformal array, time inversion technology, applied in the field of electronics, to achieve the effect of easy engineering implementation, avoiding repeated attempts and modifications, and wide adaptability

Active Publication Date: 2010-05-12
四川电子科技大学教育发展基金会
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  • Abstract
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Problems solved by technology

In the field of electromagnetics, the application of inversion technology has not yet formed a complete theoretical system, but it has achieved certain results in some research directions and initially demonstrated immeasurable ...

Method used

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  • Conformal array antenna excitation phase determining method based on time reversal
  • Conformal array antenna excitation phase determining method based on time reversal
  • Conformal array antenna excitation phase determining method based on time reversal

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Embodiment Construction

[0039] Such as figure 2 , 3 and Figure 4 As shown, in order to verify the correctness of the method described in the present invention, we have adopted a cylindrical dipole conformal array antenna model. The model contains a total of 10 dipole array units, and each dipole array unit is equally spaced around the radius R c =18mm, height H c Around a circular metal column of =120mm, the array radius R=20mm. The center plane of the array coincides with the center plane of the metal column, and the whole model is symmetrical up and down. Radius R of the dipole array element used in the model o = 1mm, the length of the upper and lower sections is d o = 20mm metal cylinder, the upper and lower cylinders are separated by 1mm, and the distance between them is the feed port. The unit feed port adopts discrete ports, and the direction is from bottom to top. In the model, each dipole array unit and the circular metal column in the middle are all made of ideal conductors.

[00...

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Abstract

The invention discloses a conformal array antenna excitation phase determining method based on time reversal, belonging to the technical field of electronics and relating to a designing method of a conformal array antenna. The method comprises the following steps: according to the beam pointing of the set conformal array antenna, adopting the time reversal technology, firstly radiating a source excitation signal x(t) to the conformal array antenna at a far-field region of the set beam pointing; then recording a signal sequence received by every array unit antenna; carrying out time reversal processing to the recorded signal sequence received by every array unit antenna; and finally, carrying out discrete Fourier transform to the time reversal sequence of every array unit antenna, and calculating excitation phase when emitting signals. The conformal array antenna excitation phase determining method has the advantages of being simple and efficient, wide in adaptability, applicable to the design of wide frequency band, easy to realize engineering, and the like. The conformal array antenna excitation phase determining method can not only be applied to the design of the conformal array antenna, but also be applied to manually control the array antenna to carry out regional scanning.

Description

technical field [0001] The invention belongs to the field of electronic technology, relates to electromagnetic technology, in particular to a design method of a conformal array antenna. Background technique [0002] With the continuous development of science and technology, the antennas carried by various advanced aircraft and vehicles are not only required to have excellent performance, in order not to change their aerodynamic parameters, but also require the antenna to be well conformal to the carrier. In ground equipment, microwave communication equipment must resist harsh weather conditions and mechanical vibrations. At the same time, in order to better camouflage itself, conformal antennas also have great research value. Not only the traditional military industry has a strong demand for high-performance conformal antennas, but also with the rapid development of mobile communications, conformal antennas have good application prospects as base station antennas or portable...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 赵德双臧锐王秉中
Owner 四川电子科技大学教育发展基金会
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