摘要
针对卫星通信和数据传输等应用,提出了一款基于遗传算法的双频(Ku/S)共孔径稀疏阵列天线。该阵列天线具有剖面低、集成度高、副瓣低等优点。双频天线阵列在单一圆孔径中集成了稀疏排布的高频段(Ku:17 GHz)阵列与低频段(S:2.25 GHz)阵列,其中高频阵列排布方式基于遗传算法优化得到,具有低副瓣,高增益的特点,并为低频阵列的嵌入提供物理空间;低频阵列以三圈圆环阵列形式嵌入高频阵列中,可进一步优化高频阵列以保持高低频阵列均处于最优状态。所提出的双频天线阵列在60°扫描范围内获得高低频增益分别为26 dBi和15 dBi,均具有≥20 dB的副瓣抑制,且相对于全阵列天线,优化后阵面尺寸仅为原尺寸的60%。
A dual-band(Ku/S)shared aperture sparse array antenna based on genetic algorithm was proposed for satellite communication and data transmission applications.The array has the advan-tages of low profile,high integration and low sidelobe.The dual-band antenna array integrated sparse-ly arranged high-frequency(Ku:17 GHz)and low-frequency(S:2.25 GHz)arrays in a single circular aperture,in which the high-frequency array was optimized based on a genetic algorithm,which has the characteristics of low sidelobe and high gain,and provides a physical space for embedding the low-frequency arrays.The low-frequency array was embedded into the high-frequency array in the form of a three-circle array,and the high-frequency array was further optimized to keep the high and low-fre-quency arrays in the optimal state.The proposed dual-band antenna array obtains high and low match-ing gains of 26 dBi and 15 dBi,respectively,with sidelobe suppression better than 20 dB in 60°range.Compared with the full-array antenna,the optimized array size is only 60%of the original size.
作者
蓝海
LAN Hai(Southwest Institute of Electronic Technology,Chengdu,610036,CHN)
出处
《固体电子学研究与进展》
CAS
2024年第4期310-314,共5页
Research & Progress of SSE
关键词
交叉融合
共孔径
稀疏阵
圆环阵
双频
cross-fusion
shared aperture
sparse array
circular array
dual-frequency
