Title :
New active decoupling technique extends lower bandwidth limit for HBT-based MMIC amplifiers
Author :
Drew, Jason ; Wilson, Brett ; Darwazeh, Izzat
Author_Institution :
Dept. of Electr. Eng. & Electron., Univ. of Manchester Inst. of Sci. & Technol., UK
fDate :
1/1/2000 12:00:00 AM
Abstract :
A new circuit technique is presented to achieve extended low-frequency operation for integrated circuit amplifier stages in which the maximum value of decoupling capacitor is restricted by processing technology limitations. Details are provided of a wideband heterojunction bipolar transistor (HBT) 50 Ω output buffer stage for a photo preamplifier which embodies this new active decoupling technique for bandwidth extension
Keywords :
MMIC amplifiers; bipolar MMIC; heterojunction bipolar transistors; preamplifiers; wideband amplifiers; HBT-based MMIC amplifiers; active decoupling technique; decoupling capacitor; heterojunction bipolar transistor; integrated circuit amplifier stages; low-frequency operation; lower bandwidth limit extension; photo preamplifier; processing technology limitations; wideband HBT output buffer stage; Bandwidth; Broadband amplifiers; Capacitors; Circuits; Frequency; Heterojunction bipolar transistors; MMICs; Optical amplifiers; Resistors; Voltage;
Journal_Title :
Circuits and Systems I: Fundamental Theory and Applications, IEEE Transactions on
