fREEDA: An Open Source Circuit Simulator

fREEDAtrade is capable of transient, wavelet, harmonic balance, DC and AC analysis of circuits. Of these it is transient analysis has the greatest capability of revolutionizing the ability to design of RF circuits. fREEDAtrade uses a number of new strategies to achieve a dynamic range in transient simulation exceeding 160 dB, large signal noise analysis, modeling of oscillator phase noise, handling arbitrarily long time delays, and capturing mixed-physics. For the first time the overall philosophy behind fREEDAtrade is outlined with particular attention to topology