Determination of Series Resistance of Silicon Millimeter wave (Ka-Band) IMPATT Diodes

A computer based method to determine the series resistance of silicon Ka- band IMPATT diode from Small signal threshold condition is described. The values of series resistance are found to be 0.904 ohm - 1.013 ohm over a feasible range of current density 9.0 times 10
⁷
Amp/m
²
- 1.2 times 10
⁸
Amp/m
²
. The results obtained by the computer method agree well with the experimentally measured values of Series resistance 1.008 ohm - 1.067 ohm for various cap heights.