RCS reduction method of phased array antenna based on scattering polarization reconfiguration

Abstract

The invention discloses a RCS reduction method of a phased array antenna based on scattering polarization reconfiguration. The RCS reduction method of the phased array antenna based on the scatteringpolarization reconfiguration comprises the following steps that S1, N array units with polarization reconfiguration are arranged on the phased array antenna, each array unit comprises three differentpolarization modes, and the N array units are regularly arranged in a rectangular grid shape; S2, when the phased array antenna radiates, N array units are in the same polarization mode to form a unified polarization array; and S3, after the radiation of the phased array antenna is stopped, the polarization of the N array units is randomly distributed to form a random polarization array. The RCS reduction method of the phased array antenna based on the scattering polarization reconfiguration can significantly reduce the RCS after the radiation of an array antenna is stopped on the basis of notaffecting the radiation performance of the array antenna.

Description

technical field [0001] The invention relates to the field of microwave antenna array design, in particular to a reconfigurable phased array RCS reduction method based on scattered polarization. Background technique [0002] With the rapid development of systems such as modern radar and communication, there is an urgent need for the size, cost and high multi-function of the antenna. To achieve this goal, the concept of reconfigurable antennas has been proposed in recent years. Reconfigurable polarization is a kind of reconfigurable antenna. It mainly uses PIN diode switches, optical control devices, RF microwave MEMS switches, etc. to change the polarization state of the incident wave, so as to obtain the desired polarization of the transmitted wave and realize linear polarization. (vertical or horizontal) or circular polarization (left or right) conversion. The antenna system is composed of multiple antenna units, and the polarization state of the antenna can be flexibly a...

AI Technical Summary

Problems solved by technology

The complexity of the array lies in the feeding network. Every discontinuous place in the feeding network will generate reflected signals. The superposition of these signals is very complicated, and due to the complex structure and large size of the array antenna, some technologies will be affected. limit

In view of the broad application prospects of phased array antennas, the RCS reduction method of phased arrays is still in the research stage, and the research reports on how to significantly reduce RCS under the premise of ensuring the radiation performance of the antenna are extremely limited

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