High frequency flip chip interconnection on liquid crystal polymer substrate using anisotropic conductive adhesive

An ACA flip-chip assembly of an MMIC on liquid crystal polymer (LCP) substrate is presented in this paper. The high frequency performance has been simulated using a lumped element model. The finite element method (FEM) computation of the thermal mechanical characterization of the ACA flip chip assembly in a cooling process was performed. The simulation results show that LCP has good high frequency performance. The LCP substrate has better thermal mechanical performance than a Teflon substrate.