Millimeter-Wave Diffraction Devices and Materials.
Abstract
Experimental results of a study to explore millimeter-wave beam-steering by techniques of diffraction are presented. When periodic structures, such as metallic gratings, are brought into proximity with a dielectric waveguide, radiation or reception of radiation at a controlled angle is possible. The direction of the beam is controlled by the period of the grating while the half-power beamwidth is controlled by the total length of the grating. Results are given for a variety of gratings formed by metallic blocks, ferro-fluid, and springs. Photoconductive gratings, varistors, and bulk acoustic wave devices were among other techniques researched in this program. Results indicate that the laser-excited photoconductive grating has promising potential for rapid beam steering. Additional keywords: Silicon, Cadmium, Sulfides, Ferrites, Semiconductors, Gallium arsenides. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 28, 1984
- Accession Number
- ADA150876
Entities
People
- M. R. Seiler
- R. W. Ridgway
Organizations
- Battelle Memorial Institute