One of the unwanted effects generated by the RFDAC structure are harmonics. These harmonics can further lead to effects such as: Inphase Quadrature image generation, TX to TX crosstalk, TX to digitally controlled oscillator (DCO) crosstalk also known as pulling, TX to RX crosstalk etc. In this paper we will conduct a thorough analysis of the harmonics that are generated by an RFDAC, including theoretical and mathematical observations which are then supported by a highly developed MATLAB simulation using an RFDAC model whose behavior is aligned with a physical implementation.