Ka波段捷变频频率合成方法

Ka-band agile frequency synthesis

摘要:

提出一种新型的Ka波段实现快速跳频的频率合成方法，该方法通过多级混频的方式实现低频信号的频谱搬移；并提出一种可小型化、低功耗、简易的频率实现方法，该方法在原设计方法基础上加入了环内混频，可实现快速跳频，极大程度地降低锁相环的N分频比，并提升输出信号的相位噪声。改进的频率合成方法弥补了原频率合成方法的缺点，并可进行拓展用于多类通信及雷达系统中。经工程验证，该新型Ka波段捷变频频率合成技术实现效果显著，可解决困扰直接合成频率技术工程应用的实际问题，是一种可进行推广应用的新型Ka波段捷变频频率合成技术。

Abstract:

A novel frequency synthesis method for fast frequency hopping in the Ka band is proposed, which achieves frequency spectrum shifting of low-frequency signals through multi-level mixing. A miniaturized, low-power, and simple frequency implementation method is also proposed. This method can achieve fast frequency hopping and incorporates an implementation method of in-loop mixing on the basis of the original design method, which can greatly reduce the N-division ratio of the Phase-Locked Loop(PLL) and improve the phase noise of the output signal. The improved frequency synthesis method compensates for the shortcomings of the original frequency synthesis method and can be extended and applied to multiple types of communication and radar systems. After engineering verification, the new Ka band agile frequency synthesis technology has achieved significant results and can solve practical problems that hinder the engineering application of direct frequency synthesis technology. It is a new Ka band agile frequency synthesis technology that can be promoted and applied.