Title :
Darlington feedback amplifier with good bias stability under large-signal conditions
Author :
Lee, T.K. ; Chan, W.S. ; Siu, Y.M.
Author_Institution :
Dept. of Electron. Eng., City Univ. of Hong Kong, Kowloon, China
Abstract :
A Darlington cell using resistive biasing suffers from bias stability under large-signal conditions, which can be detrimental at radio frequencies. Replacing the resistor with a transistor in a configuration similar to a current source but acting also as an amplifier has shown a beneficial improvement.
Keywords :
UHF circuits; bipolar transistors; circuit stability; feedback amplifiers; Darlington cell; Darlington feedback amplifier; bias stability; bipolar transistors;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20045301
