A Study on Adaptive Variable Polarization Anti-jamming Antenna of UAV
In the modern information warfare,unmanned aerial vehicle(UAV)are widely utilized for their unique advantages.However,the increasingly complex electromagnetic environment has had a significant impact on UAV communication.The design of an adaptive variable polarization anti-jamming antenna for UAV based on microwave ferrite birefringence effect and adaptive rap-id variable polarization control is presented in this paper.The antenna utilizes microwave ferrite birefringence effect to rapidly gen-erate vertical polarized wave,horizontal polarized wave,left circular polarized wave,right circular polarized wave,elliptically po-larized wave and other arbitrary polarized waves for radiation into space and interference suppression through orthogonal polariza-tion.When subjected to natural or artificial active co-frequency interference,the antenna can quickly adjust its polarization state to suppress the interference and maintain smooth UAV communication.The principles and technical key points of this adaptive varia-ble polarization anti-jamming antenna for UAV are analyzed from an engineering application perspective,and anti-jamming tests are conducted to evaluate its effectiveness in the 2.4 GHz~2.5 GHz working band.