Optoelectronic imaging using a millimeter-wave, optically controlled, photo-injected Fresnel-zone plate antenna

Tom F. Gallacher; Duncan A. Robertson; Graham M. Smith

doi:10.1117/1.OE.51.11.119003

7 November 2012 Optoelectronic imaging using a millimeter-wave, optically controlled, photo-injected Fresnel-zone plate antenna

Tom F. Gallacher, Duncan A. Robertson, Graham M. Smith

Author Affiliations +

Optical Engineering, Vol. 51, Issue 11, 119003 (November 2012). https://doi.org/10.1117/1.OE.51.11.119003

Abstract

We present results for a rapid, precise, and wide field-of-view scanning antenna for use at millimeter and submillimeter wavelengths, based on the photo-injected Fresnel-zone plate antenna (piFZPA) method. In this paper, we demonstrate the potential of this technology as a viable solution for a range of applications demanding real-time imagery or high flexibility and beam fidelity at these frequencies. We present proof-of-principle experiments at 94 GHz that incorporate a commercial display technology operating at visible wavelengths. The 100-mm-diameter piFZPA achieves 37-dBi directivity, excellent beam symmetry, beam steering in two dimensions over a ±20-deg field of view, and precise beam control and repeatability. Preliminary results of a piFZPA-based, short-range, 94-GHz, three-dimensional imaging radar are also presented.

Citation Download Citation

Tom F. Gallacher, Duncan A. Robertson, and Graham M. Smith "Optoelectronic imaging using a millimeter-wave, optically controlled, photo-injected Fresnel-zone plate antenna," Optical Engineering 51(11), 119003 (7 November 2012). https://doi.org/10.1117/1.OE.51.11.119003

Published: 7 November 2012

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