Title
Terahertz Image Sensors Using Cmos Schottky Barrier Diodes
Abstract
Schottky-barrier diodes fabricated in CMOS without process modification are shown to be suitable for THz imaging. Two THz imagers using a 130-nm digital CMOS technology are demonstrated. A fully-integrated 280-GHz 4x4 imager array exhibits a measured NEP of 29 pW/Hz(1/2) and a responsivity of 5.1kV/W (323 V/W without the amplifier). For the first time, electronic-scanning multi-pixel imaging is demonstrated in a setup that does not require bulky and costly optical lenses and mirrors. A second detector operating at 860 GHz is also demonstrated. The detector without an amplifier achieves responsivity of 355 V/W and NEP of 32 pW/Hz(1/2). It is shown that the comparable responsivity and NEP as that of 280-GHz detector is due to the improvement of patch antenna efficiency at 860 GHz. The NEP at 860 GHz is 2X better than the best reported performance of MOSFET-based imagers without silicon lens attached to the chip.
Year
DOI
Venue
2012
10.1109/ISOCC.2012.6407088
2012 INTERNATIONAL SOC DESIGN CONFERENCE (ISOCC)
Keywords
Field
DocType
CMOS, THz, imager, Schottky barrier diode
Responsivity,Computer science,Diode,Electronic engineering,CMOS,Lens (optics),Schottky diode,Terahertz radiation,Detector,Amplifier
Conference
ISSN
Citations 
PageRank 
2163-9612
1
0.48
References 
Authors
5
6
Name
Order
Citations
PageRank
Ruonan Han115227.20
Yaming Zhang2499.92
Young-Wan Kim3345.86
Dae Yeon Kim4325.11
Hisashi Shichijo5283.96
K. O. Kenneth631.24