一种Ku波段、K波段频综模块的设计与实现

A Kind of Ku-band and K-band Frequency Synthesizer's Design and Realization

为满足某Ka波段变频模块对小型化快速跳频本振信号的需求,设计了一种频综模块,该模块采用了锁相环频率合成方案,为满足跳频时间的要求,增加了预置电路,同时对锁相环环路参数进行优化设计,最终在160mm*90mm的面积内实现了两个跳频本振信号的发生,其跳频时间为≤160μs;单边带相位噪声为≤-80dBc/Hz@1kHz;≤-95dBc/Hz@100kHz;上述指标均符合设计要求,现场测试结果表明,该模块性能良好,稳定可靠,满足使用要求。

In order to meet the demand of the small and fast frequency hopping mode of a Ka-band frequency conversionmodule, a frequency synthesizer module was designed. The module uses a phase-locked loop frequency synthesis scheme,and increased the preset circuit to meet the requirements of frequency hopping time.At the same time the phase-locked loopparameters was optimal designed, and eventually achieved a two frequency hopping signals generation within the area of160mm*90mm. And its hopping time is ≤160μs, SSB phase noise is≤-80dBc/Hz@1kHz; ≤-95dBc/Hz@100kHz.All the aboveindexes conform the design requirements. Field test results show that the module has perfect performance, stable and reliable,and meet the requirements of use.