Multifrequency Oscillator-Type Active Printed Antenna Using Chaotic Colpitts Oscillator

Figure 4

Oscilloscope display of time series plot of and and phase portrait of versus . (a) Periodic mode for  V, (b) period-doubled mode, X-Y mode: two loops can be seen for  V, and (c) and (d) chaotic mode for  V.

(a)

(b)

(c)

(d)