Ultra wideband low noise amplifier with source degeneration and shunt series fedback

Author

Balashov, Evgeniy V. ; Korotkov, Alexander S.

Author_Institution

Electr. Eng. & Telecommun. Dept., St. Petersburg Polytech. Univ., St. Petersburg

fYear

2008

fDate

10-11 July 2008

Firstpage

87

Lastpage

92

Abstract

In this paper the new type of UWB LNA is presented. The amplifier has a novel feedback topology and load circuit that allows the designer to obtain high voltage gain and matching in the wide frequency range from 3.1 GHz to 10.6 GHz without cascading, current reuse technique and without an additional matching circuit. The key point of the amplifier is the source degeneration with resistive shunt series feedback and the load circuit based on combined parallel-series resonance circuit. The voltage gain of the amplifier is 11 dB, the matching is better than -10 dB, the noise figure lies between 3.2 and 4 dB in the whole frequency range. The value of CP1dB is -15 dB at the frequency near the amplitude response maximum 7.6 GHz. The amplifier consumes the power of 11.5 mW from the voltage supply 1.8 V. These characteristics are obtained by simulation of the amplifier using Virtuoso custom design platform, Cadence Design Systems, using 0.18 um CMOS parameters.

Keywords

CMOS integrated circuits; MMIC amplifiers; circuit feedback; integrated circuit design; low noise amplifiers; network topology; ultra wideband technology; CMOS parameters; Cadence Design Systems; UWB LNA; Virtuoso custom design platform; current reuse technique; feedback topology; frequency 3.1 GHz to 10.6 GHz; load circuit; parallel-series resonance circuit; power 11.5 mW; shunt series feedback; size 0.18 mum; source degeneration; ultra wideband low noise amplifier; voltage 1.8 V; Broadband amplifiers; Circuit noise; Circuit topology; Feedback circuits; Frequency; Low-noise amplifiers; Power amplifiers; RLC circuits; Ultra wideband technology; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems for Communications, 2008. ECCSC 2008. 4th European Conference on

Conference_Location

Bucharest

Print_ISBN

978-1-4244-2419-1

Electronic_ISBN

978-1-4244-2420-7

Type

conf

DOI

10.1109/ECCSC.2008.4611652

Filename

4611652