VHDL-AMS extensions for frequency domain harmonic balance simulation

VHDL has been shown to be an effective means of modeling complex electronic devices. Initially targeted as handling digital devices, it was later extended to Analog and Mixed Signal devices. In this paper, the authors show how VHDL can be extended further to accommodate microwave and RF modeling for use with Harmonic Balance Simulators. The authors refer to this extended modeling capability as VHDL-FD, and provide an example of applying it toward simulation of a Gilbert Cell mixer and the new RinconTM simulator from Ridgetop.