Title :
A 0.02-to-6GHz SDR balun-LNA using a triple-stage inverter-based amplifier
Author :
Martins, Miguel A. ; Mak, Pui-In ; Martins, Rui P.
Author_Institution :
TES Electron. Solutions, Berlin, Germany
Abstract :
This paper describes a software-defined-radio (SDR) balun low-noise amplifier (LNA) with no explicit bias circuit, inductor or ac-coupling network. It relies on a triple-stage inverter-based amplifier with resistive feedback to maximize the bandwidth and realize single-to-differential conversion. RC degeneration applied at the last gain stage enhances both linearity and output gain-phase balancing. Optimized in 65-nm CMOS the balun-LNA covers the 0.02-to-6-GHz band with S11>;-11 dB, voltage gain of 21.2-dB and noise figure below 3.2-dB. The in-band IIP2 (IIP3) is +36 to +51 dBm (-5.6 to -5.3 dBm). The power consumption is 7.9 mW at 1.2 V.
Keywords :
CMOS analogue integrated circuits; MMIC amplifiers; baluns; field effect MMIC; invertors; low noise amplifiers; software radio; CMOS technology; RC degeneration; SDR balun-LNA; ac-coupling network; explicit bias circuit; frequency 0.02 GHz to 6 GHz; gain 21.2 dB; inductor network; linearity gain-phase balancing; noise figure 3.2 dB; output gain-phase balancing; power 7.9 mW; resistive feedback; single-to-differential conversion; software-defined-radio balun low-noise amplifier; triple-stage inverter-based amplifier; voltage 1.2 V; voltage gain; CMOS integrated circuits; Gain; Impedance matching; Noise; Noise measurement; Radio frequency; Receivers;
Conference_Titel :
Circuits and Systems (ISCAS), 2012 IEEE International Symposium on
Conference_Location :
Seoul
Print_ISBN :
978-1-4673-0218-0
DOI :
10.1109/ISCAS.2012.6272067
