e-ISSN : 0975-4024 p-ISSN : 2319-8613   
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ABSTRACT

ISSN: 0975-4024

Title : A Novel Method for Direct Extraction of Base and Collector Delay Times in HBT
Authors : Salim Kerai
Keywords : HBT, Delay times, microwave, Z parameters, current gain.
Issue Date : Apr-May 2016
Abstract :
A technique for determination of the delay times C and B, forward transit time F and fitting parameter m of heterojunction bipolar transistors HBT is presented. The procedure is accurate than conventional methods because the new model based on the magnitude of common-base current gain α() is linear in the all-frequencies range. By utilizing the Z parameters of InGaP/GaAs HBT, excellent agreement is observed between measured αmes() and modeled α() in the frequency range 0-50 GHz.
Page(s) : 944-952
ISSN : 0975-4024
Source : Vol. 8, No.2