A 1.2V inductorless receiver front-end for multi-standard wireless applications

Abstract

-A novel, broadband, inductorless, multistandard receiver front-end in a digital CMOS 90nm Low Power (LP) process is described. The front-end operates in the frequency range from 0.8 GHz up to 1.7 GHz. It achieves a voltage gain of 24dB and a noise figure of 5.5dB. The measured IIP3 and IIP2 of the receiver are -13dBm and +30dBm, respectively. The input return loss is better than10dB in the frequency band from 0.8 GHz up to 1.7 GHz. The front-end consumes 26mA from 1.2V power supply and occupies a chip area of 1mm 2 . Index Terms -Multi-standard receiver, inductorless receiver front-end, low voltage receiver front-end, broadband receiver front-end, software-defined radio.

A 65nm CMOS current-mode receiver front-end

“…Sometimes, the output of the LNA is followed by a transconductor stage that converts the output voltage into current before entering the mixing stage. This configuration became popular and some examples can be found in [4], [5], [6]. In all of those cases, the drain current of common-source, common-gate or cascode amplifying stage is converted into voltage.…”