Distortion and noise performance of bottom-plate sampling mixers

Distortion and noise in a bottom-plate sampling mixer are analyzed. The method of Volterra series is used to analyze distortion. The effects of continuous time, time varying, and sampling distortions are considered. Frequency domain method is used to analyze thermal noise. The method of stochastic differential equation is used to solve for LO noise. These two noise effects, when combined with LO jitter, give a complete noise picture. The analysis is performed in sampled data domain. Explicit formulas are given to guide the design of bottom-plate sampling mixers.