Effects of Package Parameter on Millimeter Wave (Ka-Band) Exotic IMPATT Oscillators

The authors have done the Small-signal and DC signal analysis for designing a Ka-band SDR IMPact Avalanche (IMPATT) diode. In the reverse bias, we have considered an equivalent circuit of a One-dimensional (1D) junction with and without packaging parameters. Finally, the authors have studied the effects of package capacitance (CP) and package inductance (LP) on Small signal Conductance (G) – Susceptance (B) parameter and also on the optimum frequency of operation. It was observed a downward shift of optimum frequency of 2.5 GHz - 4 GHz due to package parameter at various current densities ranging between 9x107- 1.2x108 Am-2.