CAJ | 학술논문

针对传统多功能雷达频率源方案复杂、体积大、成本高的缺点,提出了一种雷达频率源的简易设计方法。该方法基于高频主振分频的频率合成方案,并通过信号频率的组合设计进一步简化了电路形式,成功实现了某型雷达所需的线性调频激励源、捷变频本振源、多普勒模拟源、采样时钟等多路信号的输出,X频段信号相位噪声达-106 dBc/Hz@1 kHz和-114 dBc/Hz@10 kHz,跳频时间小于2 ms,性能指标与采用直接频率合成实现的雷达频率源相当。
침대전통다공능뢰체빈솔원방안복잡、체적대、성본고적결점,제출료일충뢰체빈솔원적간역설계방법。해방법기우고빈주진분빈적빈솔합성방안,병통과신호빈솔적조합설계진일보간화료전로형식,성공실현료모형뢰체소수적선성조빈격려원、첩변빈본진원、다보륵모의원、채양시종등다로신호적수출,X빈단신호상위조성체-106 dBc/Hz@1 kHz화-114 dBc/Hz@10 kHz,도빈시간소우2 ms,성능지표여채용직접빈솔합성실현적뢰체빈솔원상당。
For the shortcomings that the radar frequency synthesizer based on traditional direct frequency syn-thesis is complex,large size and high cost,a simple design method is proposed. The method is based on high frequency master oscillator and simplifies the circuits by combinational design of signal frequency. With this method,the outputs of a frequency source of chirp signal,a frequency agile local oscillator,a doppler analog source,a sampling clock required by a radar frequency synthesizer are realized. The phase noise of X-band signal is -106 dBc/Hz@1 kHz,-114 dBc/Hz@10 kHz,respectively. The frequency hopping time is less than 2 μs. The performance has a considerable level with that of direct frequency synthesis.