空乏區寬度之調變效應對高低高雙飄帶衝度二極體之影響

Abstract

The effect of the depletion-region-width modulation has been included in the Quasi-static large signal calculations of the Lo-Hi-Lo double drift IMPATT diodes.In addition, a linear-generation-function model is introduced to give a comprehensive understanding of the phase advance and the power degradation effect of the diodes.The phase advance △Ø is derived versus of voltage modulation. The output power losses are also calculated as a function of voltage swing and compared with the uncorrected results. Efficiency as a function of avalavche-to frift-voltage ratio Va/Vd is obtained and Va/Vd≈1.0 is shown as the optimum condition for a double drift Lo-Hi-Lo diodes at 50% modulation .