Title :
A CMOS fully differential W-band passive imager with <2 K NETD
Author :
Gu, Qun Jane ; Xu, Zhiwei ; Jian, Heng-Yu ; Chang, Mau-Chung Frank
Author_Institution :
Univ. of Florida, Gainesville, FL, USA
Abstract :
This paper presents a fully differential W-band passive imager that integrates LNA, Dicke switch, detector and filter, with minimum NEPs of 21 fW/√Hz / 24 fW/√Hz for without/with switch cases and a peak responsivity of >;1.8 MV/W. To authors´ knowledge, this represents the largest responsivity to date from a CMOS radiometer chip. It achieves NETD = 1.94 K with 30ms integration time. The chip occupies 0.49 mm2 active area with 57 mW power consumption.
Keywords :
CMOS image sensors; low noise amplifiers; microwave detectors; microwave filters; microwave imaging; power consumption; radiometry; CMOS fully differential W-band passive imager; CMOS radiometer chip; Dicke switch; LNA; NEP; NETD; detector; filter; integration time; power 57 mW; power consumption; 1f noise; CMOS integrated circuits; Clocks; Imaging; Switches; Switching circuits; CMOS; Differential; Passive Imager; W-band;
Conference_Titel :
Radio Frequency Integrated Circuits Symposium (RFIC), 2011 IEEE
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-4244-8293-1
Electronic_ISBN :
1529-2517
DOI :
10.1109/RFIC.2011.5940669
