| 1. | According the demands with frequency source by full - coherent mm - wave radars , this paper combined the three styles of frequency synthesis and developed a type of low - phase noise and spur 、 narrow - step 、 frequency - agile 、 coherent mm - wave frequency synthesizer . it comprises of two sections : microwave section and mm - wave section . microwave section includes dds 、 pll and x band frequency multiplication chain
本文根据全相参毫米波雷达对频率源的要求,在理论分析的基础上将dds和m / npll相结合,研制出一种窄步进、捷变频的kaband全相参毫米波频率源,输出kaband本振和发射两路信号,频差60mhz 。 |
