Title :
A CMOS focal-plane array for heterodyne terahertz imaging
Author :
Pfeiffer, Ullrich R. ; Jefors, Erik Ö ; Lisaukas, Alvydas ; Glaab, Diana ; Roskos, Hartmut G.
Author_Institution :
Inst. for High-Freq. & Commun. Technol., Univ. of Wuppertal, Wuppertal, Germany
Abstract :
In this paper we present a focal-plane array (FPA) for heterodyne imaging at 0.65-THz in a low-cost 0.25-mum CMOS process technology. The 3times5 pixel array is fully integrated on chip and consists of differential patch antennas, NMOS square-law mixers, and 43-dB low-IF amplifiers. The NMOS square-law mixers are based on distributed resistive self-mixing and facilitate mixing well beyond the cutoff frequency of the technology. First 0.65-THz heterodyne imaging results are presented.
Keywords :
CMOS integrated circuits; focal planes; intermediate-frequency amplifiers; microstrip antennas; mixers (circuits); terahertz wave imaging; CMOS focal-plane array; CMOS process technology; NMOS square-law mixers; differential patch antennas; distributed resistive self-mixing; frequency 0.65 THz; heterodyne terahertz imaging; low-IF amplifiers; size 0.25 mum; Antenna arrays; CMOS process; CMOS technology; Equations; FETs; Frequency; MOS devices; Optical imaging; Semiconductor device modeling; Submillimeter wave technology; CMOS; distributed resistive mixing; focalplane arrays; terahertz;
Conference_Titel :
Radio Frequency Integrated Circuits Symposium, 2009. RFIC 2009. IEEE
Conference_Location :
Boston, MA
Print_ISBN :
978-1-4244-3377-3
Electronic_ISBN :
1529-2517
DOI :
10.1109/RFIC.2009.5135574
