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- Title
Optoelectronic imaging using a millimeter-wave, optically controlled, photo-injected Fresnel-zone plate antenna.
- Authors
Gallacher, Tom F.; Robertson, Duncan A.; Smith, Graham M.
- 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, beamsteering 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.
- Subjects
OPTOELECTRONIC devices; OPTOELECTRONICS; FRESNEL function; IMAGING systems; SCANNING systems; SCANNING antennas
- Publication
Optical Engineering, 2012, Vol 51, Issue 11, p1
- ISSN
0091-3286
- Publication type
Article
- DOI
10.1117/1.OE.51.11.119003