In this paper, we have studied, designed and realized a single-transistor chaotic generator with a smooth power spectrum of about $-$35$$dBm in frequency bandwidth up to 1$$GHz. The chaos generator model is described by a continuous-time six-dimensional autonomous system assuming an exponential nonlinearity. Chaotic behavior is characterized by bifurcation diagrams, Lyapunov exponents, phase portraits of the attractors and spectra of the oscillations, using both numerical and circuit simulations. Advanced Design System (ADS)-based simulations were carried out to support the theoretical analysis, and to validate the mathematical model. The simulations are carried out using real transistor parameters and taking into account the properties of the substrate, the influence of the board topology and the characteristics of the layout material. This simulation method known as EM/Circuit Co-Simulation allows the simulation results to approach as closely as possible to those of the experiments. In the light of the positive simulation results, the proposed structure is realized to demonstrate its feasibility, and to confirm the numerical results. The prototype is manufactured and mounted on a breadboard using the surface-mount devices and BFP193 bipolar junction transistor. After realizing the generator, we pushed it further towards perfection, through the proposal and realization of a broadband amplifier, in order to gain more bandwidth to improve the spectral characteristic of the generator, which makes it promising for many communication applications such as spread spectrum communication, direct chaotic communication, etc.

在本文中，我们研究、设计并实现了一种单晶体管混沌发生器，其平滑功率谱约为$-$35$$dBm 频率带宽高达 1$$千兆赫。混沌发生器模型由假设指数非线性的连续时间六维自治系统描述。混沌行为的特征在于分岔图、李雅普诺夫指数、吸引子的相图和振荡光谱，使用数值和电路模拟。进行了基于先进设计系统 (ADS) 的仿真以支持理论分析，并验证数学模型。仿真是使用真实的晶体管参数进行的，并考虑了基板的特性、电路板拓扑结构的影响和布局材料的特性。这种被称为 EM/Circuit Co-Simulation 的仿真方法允许仿真结果尽可能接近实验结果。根据正面的模拟结果，实现了所提出的结构以证明其可行性，并证实了数值结果。该原型使用表面贴装器件和 BFP193 双极结型晶体管制造并安装在面包板上。在实现了发生器之后，我们进一步将其推向了完美，通过宽带放大器的提出和实现，以获得更多的带宽来改善发生器的频谱特性，使其在扩频通信等许多通信应用中大有希望。 ，直接混乱的沟通等。该原型使用表面贴装器件和 BFP193 双极结型晶体管制造并安装在面包板上。在实现了发生器之后，我们进一步将其推向了完美，通过宽带放大器的提出和实现，以获得更多的带宽来改善发生器的频谱特性，使其在扩频通信等许多通信应用中大有希望。 ，直接混乱的沟通等。该原型使用表面贴装器件和 BFP193 双极结型晶体管制造并安装在面包板上。在实现了发生器之后，我们进一步将其推向了完美，通过宽带放大器的提出和实现，以获得更多的带宽来改善发生器的频谱特性，使其在扩频通信等许多通信应用中大有希望。 ，直接混乱的沟通等。