关键词: 低相噪, 频率源, HMC839LPCE, VCO, PLL

Abstract:

This paper introduces an L/S/C band frequency source implement on a area of 20 mm×20 mm PCB.At a frequency up to 4 820 MHz,the phase noise reaches -100 dBcVHz@10 kHz.If the step is set to 2MHz,at a loop bandwidth of 100 kHz,the clutter suppression is greater than 40 dBc and the frequency hopping time less than 200 μs;at a loop bandwidth of 40 kHz,the clutter suppression is greater than 60 dBc and the frequency hopping time less than 600 μs.This design can be applied in some low-end receiver and calibration source and in the radio frequency communication when spurious suppression was not seen as important.

Key words: low phase noise;frequency source;HMC839LPCE;VCO;PLL