Modeling of electronic attenuator in adaptive interference cancellation systems

In the design of adaptive interference cancellation systems (AICSs), the simulation model plays an important role. Particularly, accurate modeling of the response of electronic attenuator is crucial but is usually a difficult task since it relies on the exact fitting of the response of real PIN diodes. In this paper, the PIN diode response characteristics are firstly measured with exprienment. Then, the key parameters of the model are extracted by fitting the experiment data with the output of the model. The feasibility of this approach is examined with three levels of experiments and simulations, i.e., the response of the PIN diode and the electronic attenuator, as well as the performance of the AICS. The results show that our proposed method is feasible and effective.