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A CMOS focal-plane array for heterodyne terahertz imaging

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5 Author(s)
Pfeiffer, U.R. ; Inst. for High-Freq. & Commun. Technol., Univ. of Wuppertal, Wuppertal, Germany ; Ojefors, E. ; Lisaukas, A. ; Glaab, D.
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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.

Published in:

Radio Frequency Integrated Circuits Symposium, 2009. RFIC 2009. IEEE

Date of Conference:

7-9 June 2009