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本文介绍了采用数字基带产生结合倍频链扩展带宽的方法设计与实现了大带宽线性调频信号产生系统。详细分析研究了实现系统的三项关键技术，给出并分析了相应环节的输出信号。对系统进行了预失真补偿处理，成功实现了ＶＨＦ／ＵＨＦ波段、带宽达３００ＭＨｚ线性调频信号的产生。经脉冲压缩处理，主瓣旁瓣比（ＰＳ１Ｒ）在－３７ｄＢ以下。
This paper introduces the design and implementation of a large-bandwidth chirp signal generation system by using the method of digital baseband generation combined with double-frequency chain extension bandwidth. Detailed analysis and study of the three key technologies to achieve the system, the corresponding part of the output signal is given and analyzed. The system has been pre-distortion compensation processing, the successful realization of the VHF / UHF band, bandwidth up to 300MHz chirp signal generation. After pulse compression, the mainlobe lobe ratio (PS1R) below -37dB.