Title :
A novel technique for wideband bipolar amplifiers
Author :
Ghasemzadeh, Mehdi ; Mousazadeh, Morteza ; Akbari, A. ; Hadidi, Khayrollah ; Khoei, Abdollah
Author_Institution :
Microelectron. Res. Lab., Urmia Univ., Urmia, Iran
Abstract :
In this paper a novel wideband amplifier based on a positive feedback is presented. The utilizing feedback network includes two capacitors and an emitter degeneration resistor which does not affect the low frequency behavior of the amplifier. Also a series-series mode is exploited to compensate the miller effect of Cμ and to decrease the input capacitance. The proposed method is obtained a 200% gain bandwidth enhancement with respect to a simple differential pair and a 21% improvement considering other topologies in the literature.
Keywords :
capacitors; resistors; wideband amplifiers; Miller effect; capacitor; emitter degeneration resistor; feedback network; gain bandwidth enhancement; series-series mode; wideband bipolar amplifier; Bandwidth; Broadband amplifiers; Capacitance; Capacitors; Gain; Topology; Transistors; Bandwidth enhancement; positive feedback; wideband amplifier;
Conference_Titel :
Electrical Engineering (ICEE), 2013 21st Iranian Conference on
Conference_Location :
Mashhad
DOI :
10.1109/IranianCEE.2013.6599862
