Extraction of thermal time constant in HBTs using small signal measurements
نویسندگان
چکیده
S. Bruce, A. Trasser, M. Birk, A. Rydberg and H. Schumacher. Uppsala University, Box 534, S-751 21 Uppsala, Sweden. University of Ulm, Abt. EBS, D-89069 Ulm, Germany. Abstract A novel method for finding the thermal time constant of HBTs is proposed. It utilizes small signal measurements in the frequency domain of the typical negative differential resistance found in the active region, i.e., normal bias conditions for the device. In this way, non-linearities in the thermal resistivity does not disturb the extraction and the device needs only to be characterized in one bias point.
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