A Generalized Nonlinear Model of 1-bit PIN-diode Based Transmitarray Unit Cell

Abstract

This paper presents the results of an analysis of the nonlinear distortions in the transmitarray unit cell caused by the control element. The model of a unit cell with a one-bit PIN diode phase shifter was developed, to evaluate the loss and third-order intermodulation products dependencies on an applied voltage. The unit cell was manufactured and measured to prove the model simulation results. Measurements results of the transmission coefficient modules and third-order intermodulation products level as function of input power for different bias voltages are in a good agreement with the simulated results. It allows using this model for the estimation of the linear and nonlinear performance of the transmitarray.