Studies of 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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 28, 1984
- Accession Number
- ADA216504
Entities
People
- Milton R. Seiler
- Richard W. Ridgway
Organizations
- Battelle Memorial Institute