Feedback network for cascaded ultra-wideband amplifiers

Author

Tiiliharju, Esa ; Koivisto, Tero

Author_Institution

Dept. of Inf. Technol., Univ. of Turku, Turku

Volume

1

fYear

2008

fDate

10-12 Sept. 2008

Firstpage

21

Lastpage

24

Abstract

This paper relates to a feedback network for cascade amplifiers, which uses an active stage to feed signal back to a first internal node at the output of the first amplifier stage of the cascade, and an optional feedback path through a resistor. The proposed simple connection is shown to improve amplifier stability and to increase isolation, with no discernible extra cost. First measurement results of an UWB LNA prototype circuit fabricated in a 130-nm digital CMOS process will be given to support stated benefits.

Keywords

CMOS integrated circuits; cascade networks; feedback amplifiers; ultra wideband technology; UWB LNA prototype circuit; amplifier stability; cascade amplifiers; cascaded ultrawideband amplifiers; digital CMOS process; feedback network; size 130 nm; CMOS process; Circuit stability; Costs; Feedback circuits; Low-noise amplifiers; Network topology; Optical amplifiers; Output feedback; Resistors; Ultra wideband technology; LNA; UWB; digital CMOS; feedback network;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultra-Wideband, 2008. ICUWB 2008. IEEE International Conference on

Conference_Location

Hannover

Print_ISBN

978-1-4244-2216-6

Electronic_ISBN

978-1-4244-1827-5

Type

conf

DOI

10.1109/ICUWB.2008.4653276

Filename

4653276