Title :
The effects of source impedance on the linearity of BTJ common-emitter amplifiers
Author :
Vuolevi, Joel ; Rahkonen, Timo
Author_Institution :
Dept. of Electr. Eng., Oulu Univ., Finland
Abstract :
Source impedance Zs plays an important role by minimizing the distortion of a common-emitter BJT-stage. Care has to be taken to achieve the proper impedance not only at the fundamental, but also at the frequencies of the 2nd-order signal. Volterra analysis is applied in order to gain an insight into distortion mechanisms. By providing the optimum Zs at different frequencies, significant improvement in linearity can be achieved
Keywords :
Volterra series; amplifiers; bipolar transistor circuits; circuit optimisation; electric distortion; electric impedance; equivalent circuits; impedance matching; network analysis; network synthesis; BTJ common-emitter amplifiers; Volterra analysis; amplifier linearity; distortion mechanisms; distortion minimisation; source impedance effects; Circuits; Distortion; Equations; Harmonic analysis; Impedance matching; Linearity; Power amplifiers; Radio frequency; Radiofrequency amplifiers; Voltage;
Conference_Titel :
Circuits and Systems, 2000. Proceedings. ISCAS 2000 Geneva. The 2000 IEEE International Symposium on
Conference_Location :
Geneva
Print_ISBN :
0-7803-5482-6
DOI :
10.1109/ISCAS.2000.858722
