National High-tech R&D Program (863 Program) [2006AA04Z346]; Talent Scientific Research Foundation of Wuhan Polytechnic University [2012424]
机构署名：
本校为第一且通讯机构
院系归属：
电气与电子工程学院
摘要：
This paper presents an digital microwave oscillator which employs a phase lock loop (PLL) chip and a direct digital synthesizer (DDS) chips to realize a pure frequency at 3.4170Hz (half of the 87Rb atom ground-state hyperfine transition frequency) for the coherent population trapping (CPT) atomic clock application. And at this frequency, the oscillator demonstrates low noise (lower than -50dBc/Hz@100Hz and lower than -55dBc/Hz@1kHz) and purity. Moreover, based on the communication between a computer and the MCU, this oscillator coul...
