Conformal array antenna excitation phase determining method based on time reversal

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...

AI Technical Summary

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 application prospects in engineering, such as super-resolution positioning Electromagnetic coexistence with imaging, wireless communication systems, space-time power combining, adaptive ultra-high-speed information transmission, etc.

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