Modeling and Performance Analysis of the Transceiver Duplex Filter using SIMULINK

Abstract

The non-idealities of full-duplex devices of the transceiver chain is not well known despite of the intensive recent research on wireless single-channel full-duplex communications. However, in spite of the use of efficient analog and digital cancellation and suitable physical antenna isolation they turn out to be among main practical reasons for observing residual self-interference. In this paper the implementation and simulation of RF transceiver Duplex Filter and noise isolation improvement using Matlab/SIMULINK environment is done, as well as quantifying the dynamic range of required signal and the reduction of these IF-interference due to the analog-to-digital interface. The Transfer Function calculation results are provided by the help of a White Noise Source and Simulation results of frequency response in the Tx and Rx channels. The simulation and measurement results comparison for new duplexer and the marks and values of frequency response at the critical frequency points have improved isolation due to the effect of optimized external inductor. It has been observed in a full-duplex transceiver that the transmitter power amplifier (PA) produces a nonlinear distortion that is considered to be a significant issue.