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Proceedings Paper

Unamplified direct detection sensor for passive millimeter wave imaging
Author(s): Jonathan Lynch; Harris Moyer; Joel Schulman; Phillip Lawyer; Ross Bowen; James Schaffner; Debabani Choudhury; Jim Foschaar; David Chow
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Paper Abstract

We have demonstrated a high efficiency package for zero bias Sb-based backward tunnel diodes developed for passive millimeter wave imaging. Flip-chip mounting of detector MMICs onto quartz substrates permit placement of the detector directly within the WR-10 waveguide feeds for diagonal horn antennas. This arrangement minimizes the losses between the detectors and antennas while providing an impedance match over a majority of W band. A 2x2 array of radiometers was fabricated, assembled, and measured using coherent measurement techniques. The resulting noise equivalent temperature difference, calculated assuming a 30 Hz frame rate is 10 degrees K.

Paper Details

Date Published: 5 May 2006
PDF: 7 pages
Proc. SPIE 6211, Passive Millimeter-Wave Imaging Technology IX, 62110I (5 May 2006); doi: 10.1117/12.667045
Show Author Affiliations
Jonathan Lynch, HRL Labs., LLC (United States)
Harris Moyer, HRL Labs., LLC (United States)
Joel Schulman, HRL Labs., LLC (United States)
Phillip Lawyer, HRL Labs., LLC (United States)
Ross Bowen, HRL Labs., LLC (United States)
James Schaffner, HRL Labs., LLC (United States)
Debabani Choudhury, HRL Labs., LLC (United States)
Jim Foschaar, HRL Labs., LLC (United States)
David Chow, HRL Labs., LLC (United States)


Published in SPIE Proceedings Vol. 6211:
Passive Millimeter-Wave Imaging Technology IX
Roger Appleby; David A. Wikner, Editor(s)

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