K频段64元瓦片式接收组件设计

Design of K-band 64 Element Tile-type Receiver Module

基于相控阵系统高集成、低剖面的应用需求,研制了K频段64元瓦片式接收组件。通过高密度集成的三维设计思路,将64元接收通道按照矩形栅格进行阵列化排列,各功能电路横向布局、纵向集成,实现了组件的低剖面特性。对组件的关键电路设计、结构设计、热设计进行了详细介绍。通过实物测试,该接收组件单通道增益≥20 dB,噪声系数≤4.8 dB;每个通道可独立实现6位移相、6位衰减功能,移相均方根误差(RMS)精度≤6°,衰减RMS精度≤1.5 dB。组件尺寸为52 mm×52 mm×14 mm,质量小于150 g。该接收组件具有标准化的构架,可灵活地实现大规模阵列扩展。

Based on the application requirements of high integration and low profile of phased array systems,a K-band 64 element tile-type receiver module has been developed.Through the 3D layout design of high density integration,the 64 element receiving channels are arrayed according to the rectangular grid.Functional circuits can be arranged horizontally and integrated vertically,and the low profile feature of the component is realized.The key circuit design,structure design and thermal design of the module are introduced in detail.The test results show that the gain of single channel is greater than 20 dB,noise figure is less than 4.8 dB.Simultaneously,each channel can be controlled independently to realize 6-bits phase shift and 6-bits attenuation,root mean square(RMS)phase shifting accuracy is less than 6°,RMS attenuation accuracy is less than 1.5 dB.The overall dimension of the structure is 52 mm×52 mm×14 mm,and the mass is less than 150 g.In addition,standardized architecture for large-scale arrays expansion are smartly realized.