Robust performance analysis for linear time-invariant systems with linear fractional transformation (FTI) real parametric uncertainty is considered. New conditions of robust stability/performance based on parameter dependent Lyapunov functions are proposed. The robust stability/performance measures are: robust pole location, robust H-infinity performance and robust H-2 performance. Linear matrix inequality (LMI)-based sufficient conditions for the existence of parameter-dependent Lyapunov functions are derived by using the quadratic separation concept. The performances of the proposed conditions are compared with existing tests.