Phase Noise Performance Improvement of X-Band Airborne Radar System

Phase noise performance of microwave synthesizers is sensitive to vibrations to some extent. The reference source is one of the prime performance-limiting components in microwave systems ranging from simple RF receivers to advanced radars. Phase noise performance improvement of PLL during random vibration environment is discussed in this article. It's basically achieved by following methodologies, viz; vibro-isolator compensation technique, purification tactic of source crystal reference for PLL and also analyzed the spatial location for mounting of crystal reference and avoid UUT (unit under test) resonance out of frequency spectrum (PSD) of Random vibration profile. We point out some challenges and provide suggestions for the accurate measurement of vibration sensitivity of Airborne Radar system.