摘要
研究了一种L波段8通道宽带数字T/R组件设计技术。组件具有瞬时带宽宽和发射功率大的特点,可以产生带宽为100 MHz的线性调频信号(LFM),单通道输出功率可达50 W。该组件集成了8个独立的收发通道,上下变频都采用一次变频,简化了电路设计,控制组件的体积、重量和成本,取得了良好的效果。通过对研制样件的测试,设计性能达到要求,其通道间相位长期稳定性即同频点相位差RMS达到发射小于2.5°,接收小于0.7°的指标。利用2个样件构建了16单元数字线阵试验平台,给出了发射和接收方向图。
A new design technology of wideband 8-channel digital T/R module at L band is presented in this paper. The module has wide transient bandwidth and high transmit power, it can produce a bandwidth of 100 MHz LFM, each channel of transmit peak power could reach 50 watts. 8 T/R channels will be integrate in one module, upconversion and downconversion only have once, it could simplify the design of circuit and cut down the mass , volume and cost of the module. These techniques have good effects. The testing results of sample indicate the module performance has been achieved, phase stability between T/R channels at same frequence namely RMS of phase error less than 2.5/0.7 degree. Using two T/R module samples, a 16 element digital line array radar testbed was constructed and the ARP and ATP are given.
出处
《现代雷达》
CSCD
北大核心
2012年第10期63-69,共7页
Modern Radar
基金
国防预研基金资助项目
