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The article presents the results of the design of GaN phase shifter for MIMO-based antennas. The optimization and simulation for each operating frequency 0.1–31.5 GHz was performed along with simulation of effect of capacitance mismatch on phase shifter parameters. The phase shifter is designed as a switchable high-pass filter that provides a 90° phase shift with minimum insertion losses at the operating...
A Nonlinear Circuit Model (NCM) combined with device/physical parameters was developed by using hyperbolic tangent (tanh) function and applied to GaN high electron mobility transistors (HEMTs). The equations for the NCM were constructed to reproduce the results of a device physical simulation. Model parameters are similar with the parameters used in the device design. The simulated DC and capacitance...
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