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Proceedings Paper

Two-Dimensional Horn Imaging Arrays
Author(s): Gabriel M. Rebeiz; Yong Guo; David B. Rutledge; Dayalan P. Kasilingam
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Paper Abstract

We have demonstrated a two-dimensional horn imaging array at 240 GHz. In this configuration, a dipole antenna is suspended in a horn on a thin silicon-oxynitride membrane. The horns are fabricated by anisotropic etching of silicon in an ethylene-diamine pyrocatechol solution. This results in pyramidal pits bounded by the <111> crystal planes, and where the sides make an angle of 54.7° with the <100> surface plane. The membrane is so thin compared to a wavelength, that the dipole is effectively radiating in free space bounded by conductive horn walls. The dipole antenna is integrated with a bismuth microbolometer detector on the membrane. We have measured the patterns of a single element in a 9 x 9 imaging array at 240 GHz, with a horn opening of 1.45 Å. The directivity of the antenna element found from the two-dimensional pattern measurements is 12.5 dB.

Paper Details

Date Published: 18 May 1988
PDF: 1 pages
Proc. SPIE 0879, Sensing, Discrimination, and Signal Processing and Superconducting Materials and Intrumentation, (18 May 1988); doi: 10.1117/12.943977
Show Author Affiliations
Gabriel M. Rebeiz, California Institute of Technology (United States)
Yong Guo, California Institute of Technology (United States)
David B. Rutledge, California Institute of Technology (United States)
Dayalan P. Kasilingam, Ocean Research and Engineering (United States)


Published in SPIE Proceedings Vol. 0879:
Sensing, Discrimination, and Signal Processing and Superconducting Materials and Intrumentation
James A. Ionson; Roy Nichols, Editor(s)

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