【作者】 于朝同； 史港； 贾永涛； 刘英；

【Author】 Yu Zhao-tong;Shi Gang;Jia Yongtao;Liu ying;Xidian University;

【机构】 西安电子科技大学；

【摘要】 本文提出一种具有高辐射效率、带内低雷达散射截面(RCS)和低剖面圆极化(CP)阵列天线。该阵列天线采用棋盘式排布结构,通过两种圆极化贴片单元及寄生单元之间的相位对消,在X、Y极化波垂直入射条件下均可实现10 dB的带内RCS缩减。同时阵列天线在工作频率3 GHz处的增益达18.18 dBic,口径效率为58%,尺寸仅为0.03λ(λ为中心频率波长)。该低散射圆极化阵列天线不仅保证了低剖面结构,还兼具高辐射效率,可作为低可探测平台的理想选择。更多还原

【Abstract】 This paper presents a circularly polarized(CP)antenna array characterized by high radiation efficiency,low in-band radar cross section(RCS),and low profile.The array employs a checkerboard configuration,achieving in-band RCS reduction for both X-polarized and Y-polarized waves under normal incidence through phase cancellation between two CP patch elements and parasitic elements.The proposed array achieves a 10 dB in-band RCS reduction under normal incidence for both X-pol and Y-pol waves.It exhibits a gain of 18.18 dBic and an aperture efficiency of 58% at 3 GHz,with a compact size of merely 0.03λ(λ denotes the wavelength at the center frequency).This low-scattering CP antenna maintains a low-profile geometry while having high radiation efficiency,making it a suitable candidate for low-observed platforms.更多还原