RF transconductor linearization technique robust to process, voltage and temperature variations

Author

Subramaniyan, Harish Kundur ; Klumperink, Eric A. M. ; Nauta, Bram ; Venkatesh, Svetha ; Kiaei, Ali

Author_Institution

IC-Design Group, Univ. of Twente, Enschede, Netherlands

fYear

2014

fDate

10-12 Nov. 2014

Firstpage

333

Lastpage

336

Abstract

A new reconfigurable linearized low noise transconductance amplifier (LNTA) design for a software-defined radio receiver is presented. The transconductor design aims at realizing high linearity at RF in a way that is robust for Process, Voltage and Temperature variations. It exploits resistive degeneration in combination with a floating battery by-pass circuit and replica biasing to improve IIP3 in a robust way. The LNTA with current domain mixer is implemented in a 45nm CMOS process. Compared to an inverter based LNTA with the same transconductance, it improves P_IIP3 from 2 dBm to a robust P_IIP3 of 8 dBm at the cost of 67% increase in power consumption.

Keywords

CMOS integrated circuits; linearisation techniques; low noise amplifiers; mixers (circuits); radio receivers; replica techniques; software radio; CMOS process; IIP3 improvement; RF transconductor linearization technique; current domain mixer; floating battery by-pass circuit; inverter based LNTA design; power consumption; process variations; reconfigurable linearized low noise transconductance amplifier design; replica biasing; resistive degeneration; size 45 nm; software-defined radio receiver; temperature variations; voltage variations; CMOS integrated circuits; Inverters; Linearity; MOSFET; Noise; Receivers; Robustness; CMOS; Linearity; PVT; Receiver; Software-defined Radio; Transconductor; Transconductor Figure-of-Merit; robust circuit design;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State Circuits Conference (A-SSCC), 2014 IEEE Asian

Conference_Location

KaoHsiung

Print_ISBN

978-1-4799-4090-5

Type

conf

DOI

10.1109/ASSCC.2014.7008928

Filename

7008928