| Author(s): |
Archita Hati; Craig W. Nelson; David A. Howe; |
| Title: |
Phase-lock Loops in Vibration Environments |
| Published: |
November 16, 2009 |
| Abstract: |
A popular scheme for achieving low phase noise across a large range of offset frequencies is to employ an oscillator at an output frequency with low far-from-carrier noise that is phase-locked to a reference that has low close-to-carrier noise. We investigate the effects of vibration on phase locked loop (PLL) when two oscillators with different vibration sensitivity are phase locked. For experimental verification, a 2.5 GHz surface-transverse wave (STW) oscillator integrated with and phase-locked to a reference 10 MHz quartz-crystal oscillator is chosen. The vibration sensitivity of a STW oscillator used for the experiment is slightly lower than the vibration sensitivity of the 10 MHz reference. The PLL is optimized for at-rest operation and then evaluated in the presence of different levels of random vibration. |
| Proceedings: |
Proc. 2009 PTTI Mtg. |
| Pages: |
pp. 303 - 312 |
| Location: |
Santa Ana Pueblo, NM |
| Dates: |
November 17-19, 2009 |
| Keywords: |
oscillator;phase-locked loop;phase modulated noise;vibration sensitivity |
| Research Areas: |
Physics, Time and Frequency |
| PDF version: |
 Click here to retrieve PDF version of paper (542KB) |
