Analog baseband chain of synthetic aperture radar (SAR) receiver

Authors:
Faizah Abu Bakar;Qaiser Nehal;Pekka Ukkonen;Ville Saari;Kari Halonen
Affiliations:
Department of Micro and Nanosciences, School of Electrical Engineering, Aalto University, Aalto, Finland 00076;Department of Micro and Nanosciences, School of Electrical Engineering, Aalto University, Aalto, Finland 00076;Department of Micro and Nanosciences, School of Electrical Engineering, Aalto University, Aalto, Finland 00076;Department of Micro and Nanosciences, School of Electrical Engineering, Aalto University, Aalto, Finland 00076;Department of Micro and Nanosciences, School of Electrical Engineering, Aalto University, Aalto, Finland 00076
Venue:
Analog Integrated Circuits and Signal Processing
Year:
2013

Citing 1
Cited 0

A 240-MHz low-pass filter with variable gain in 65-nm CMOS for a UWB radio receiver

IEEE Transactions on Circuits and Systems Part I: Regular Papers

Quantified Score

Hi-index	0.00

Visualization

Abstract

An analog baseband chain for a synthetic aperture radar receiver implemented in a 130 nm CMOS technology is presented in this paper. Occupying 0.23 mm2 of silicon area, the baseband chain consists of a three-stage variable gain amplifier (VGA), a 5th-order gm-C low-pass filter (LPF) and an output buffer. The gain of the chain can be controlled by tuning the control voltages of the VGA and has a range from 25 to 34 dB. 8 dB of the gain is embedded into the LPF. The bandwidth of the LPF is programmable from 100 to 190 MHz by means of capacitor matrices. The chain, which uses a 1.2 V supply voltage, achieves an input-referred noise density of 4 nV/ $$ \sqrt {\text{Hz}} $$ and an in-band IIP3 of 驴46 dBV rms.