A Reconfigurable RCS Reduction Method for Phased Array Antenna Based on Scattered Polarization

Abstract

The invention discloses a phased array antenna RCS reduction method based on scattering polarization reconfigurable, comprising the following steps: S1. Setting N polarization reconfigurable array units for the phased array antenna, each array unit includes Three different polarization modes, and N array units are regularly arranged in a rectangular grid; S2. When the phased array antenna radiates, make N array units in the same polarization mode to form a uniform polarization array ; S3. After the radiation of the phased array antenna ends, the polarizations of the N array elements are randomly distributed to form a random polarization array. The RCS reduction method of the phased array antenna based on the reconfigurable scattering polarization provided by the present invention can significantly reduce the RCS of the array antenna after the radiation of the array antenna is finished without affecting 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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