Noise generator electronic circuit

Figure 3. A block diagram of the electronic circuit which generates the Gaussian noise.

The impact of periodic signals on dynamical systems has widespread relevance in different fields, ranging from technically generated periodic signals in electronic circuits to the periodic modulation of the solar irradiation on earth. Often the considered systems are intrinsically noisy or external noise influences the dynamics together with the periodic signal. There are different possibilities to quantify the response of such a stochastic system to a periodic signal. Most prominent are spectral based measure like the... 

Johnson thermal noise. Noise generated by thermal agitation of electrons (electron kinetic energy fluctuations) in a resistor sets a lower limit on noise present In a detector readout circuit. Called Johnson thermal noise, this non-perlodlc noise exists In all conductive elements, and Is a function of temperature and resistance, described by ... 

---