一种捷变变频链路的设计与实现

Design and Implementation of a Variable Frequency Link

阐述运用高频本振(20GHz、21GHz、22GHz、23GHz)与捷变中频(3~4GHz)混频得到16~20GHz作为第二级变频的本振信号,再与高频信号16GHz混频,混频输出10MHz~4GHz,经过匹配放大输出功率±3dBm范围内,谐波小于30dBc,非谐波小于60dBc,10MHz~4GHz频段内任意频段跳变时间小于100ns,得益于ADS仿真软件,完成链路仿真和多次混频交调杂散分析,预估混频输出功率和交调信号大小,正向指导射频链路增益和滤波器设计。

This paper describes the use of high frequency local oscillator(20GHz, 21GHz, 22GHz,23GHz) and agile intermediate frequency(3~4GHz) mixing to obtain 16~20GHz local oscillator signal as the second stage frequency conversion, and then mixing with high frequency signal 16GHz, mixing output 10MHz~4GHz, after matching and amplifying the output power within the range of ±3dBm, the harmonic is less than 30dBc, the non-harmonic is less than 60dBc, and the jump time of any frequency band in the range of 10MHz~4GHz is less than 100ns, thanks to ADS simulation software, It analyzes the link simulation and multi-mixing intermodulation spurious, estimates the mixing output power and intermodulation signal size, and guides the RF link gain and filter design forward.