Amplifier phase noise is becoming an increasingly important metric when considering low phase noise microwave systems. This seminar aims to demonstrate phase noise measurement practices that improve reliability and accuracy in an otherwise difficult measurement. Driver/DUT amplifier compression levels, power supply AM noise, harmonic filtering, and proper grounding, are all variables that require optimization to ensure accurate and reliable measurements. Amplifier phase noise is also compared to oscillator phase noise, developing an intuition of when amplifier phase noise should be considered in a microwave system.