Title :
Direct calculation of the HBT small-signal equivalent circuit with special emphasize to the feedback capacitance
Author :
Peters, D. ; Daumann, W. ; Brockerhoff, W. ; Reuter, R. ; Koenig, E ; Tegude, F.J.
Author_Institution :
Duisburg University, SFB 254, Solid-State Electronics Department Kommandantenstr. 60, D-47057 Duisburg. Tel: ++49 - (0)203 - 379 - 3394, Fax: ++49 - (0)203 - 379 - 3340, email: hlt@hlt.uni-duisburg.de.
Abstract :
In this paper a new direct evaluation technique for the small-signal equivalent circuit of AlGaAs/GaAs Heterojunction Bipolar Transistors is presented. Based on the known hot and cold measurement technique, all small-signal equivalent circuit elements including the feedback capacitance Cfb can be directly determined in the frequency range from 45 MHz up to 50 GHz without the requirement for any simplification of the corresponding equations.
Keywords :
Equations; Equivalent circuits; Feedback; Frequency measurement; Gallium arsenide; Heterojunction bipolar transistors; Measurement techniques; Parameter extraction; Parasitic capacitance; World Wide Web;
Conference_Titel :
Microwave Conference, 1995. 25th European
Conference_Location :
Bologna, Italy
DOI :
10.1109/EUMA.1995.337119
