| Wideband chaotic signals have broad spectrum and acquire wide applications in radar, communications and measurements and control. This thesis discusses the circuit-based generation of the wideband chaotic signals and main works are as follows:1. Taking typical autonomous circuits as examples, firstly study the generating methods of the chaotic signals. And then analyze and compare the performances of the generated signals.2. Study the Colpitts chaotic oscillator. Firstly derive the topology and state equations of the circuit and then analyze the circuit states and signal characteristics in different parameter settings.3. Study the Colpitts oscillator-based wideband chaotic circuits. Using the Matlab and Pspice, simulate the performances of the wideband signals.4. Design a generating circuit of the wideband chaotic signals. The circuit has properties of the simple structure, easy implementation and convenient control. Simulation experiments show that the circuit can generates the chaotic signal with broad and flat spectrums. |
