Nonlinear Noise Mechanisms in Active Devices: Additive Amplitude Noise and Phase Noise

In this report, we lay the foundation for amplitude noise and phase noise analysis in nonlinear devices. We build a theoretical framework that helps us to analyze extremely difficult problems which include both nonlinearity and noise of semiconductors. Using our proposed framework, we analytically calculate the amplitude noise and phase noise of nonlinear RC circuits in the presence of nonlinear capacitance and conductance. As a more practical example, we analyze the amplitude noise and phase noise of a common-emitter stage bipolar transistor.