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Optical Engineering

Amplifier based broadband pixel for sub-millimeter wave imaging
Author(s): Stephen Sarkozy; Kevin M. Leong; Richard Lai; Xiaobing Mei; Wayne Yoshida; Michael D. Lange; Jane Lee; William R. Deal; Jonathan J. Drewes
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Paper Abstract

Broadband sub-millimeter wave technology has received significant attention for potential applications in security, medical, and military imaging. Despite theoretical advantages of reduced size, weight, and power compared to current millimeter wave systems, sub-millimeter wave systems have been hampered by a fundamental lack of amplification with sufficient gain and noise figure properties. We report a broadband pixel operating from 300 to 340 GHz, biased off a single 2 V power supply. Over this frequency range, the amplifiers provide > 40  dB gain and <8  dB noise figure, representing the current state-of-art performance capabilities. This pixel is enabled by revolutionary enhancements to indium phosphide (InP) high electron mobility transistor technology, based on a sub-50 nm gate and indium arsenide composite channel with a projected maximum oscillation frequency fmax>1.0  THz. The first sub-millimeter wave-based images using active amplification are demonstrated as part of the Joint Improvised Explosive Device Defeat Organization Longe Range Personnel Imager Program. This development and demonstration may bring to life future sub-millimeter-wave and THz applications such as solutions to brownout problems, ultra-high bandwidth satellite communication cross-links, and future planetary exploration missions.

Paper Details

Date Published: 22 May 2012
PDF: 6 pages
Opt. Eng. 51(9) 091602 doi: 10.1117/1.OE.51.9.091602
Published in: Optical Engineering Volume 51, Issue 9
Show Author Affiliations
Stephen Sarkozy, Northrop Grumman Aerospace Systems (United States)
Kevin M. Leong, Northrop Grumman Aerospace Systems (United States)
Richard Lai, Northrop Grumman Aerospace Systems (United States)
Xiaobing Mei, Northrop Grumman Aerospace Systems (United States)
Wayne Yoshida, Northrop Grumman Aerospace Systems (United States)
Michael D. Lange, Northrop Grumman Aerospace Systems (United States)
Jane Lee, Northrop Grumman Aerospace Systems (United States)
William R. Deal, Northrop Grumman Aerospace Systems (United States)
Jonathan J. Drewes, Microsemi Corp. (United States)

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