Complex Dynamical Behavior of a Two-Stage Colpitts Oscillator with Magnetically Coupled Inductors

Figure 8

Experimental phase portraits (right) obtained from the circuit of Figure 8 using a dual trace oscilloscope in the mode. The collector voltage of BJT () is connected to the input and the channel displays the collector voltage of BJT (): (a) period 1 for ; (b) period 2 for ; (c) period 4 for ; (d) chaos for ; (e) period 3 for ; and (f) chaos for . Corresponding numerical phase portraits (right).

(a)

(b)

(c)

(d)

(e)

(f)