利用锁频环路的快速跳频合成信号发生器

Fast hopping frequency systhesizer utilizing a frequency locked loop

本文介绍一种高性能快速跳频合成信号发生器,利用锁相环路和锁频环路相结合的原理和跳频校准控制技术而实现的。着重介绍了延迟线鉴频器锁频环路的工作原理、低噪声特性和宽带特性,仪器实现低相噪和快速频率转换的机理。介绍了通过信道、序列设置,每个频率点的环路增益参数和预调电压的校准和存储,实现快速跳频的方法。

A high performance fast hopping frequency synthesizer has been introduced in this article. It is realized by utilizing a combined phase locked and frequency locked loop and the calibration ＆ control technology of frequency hop. The principle of frequency lock loop includes delay line discriminator and it is the characteristic of the low noise, and broad band has been introduced in detail in this article. The method of frequency fast hop is realized by setting channel table and sequence table, and by calibrating ＆ storing the loop gain parameters and the pre-adjustment voltages of each frequency.