Scannable Millimeter Wave Arrays. Volume 1
Abstract
The complexity usually associated with scanning arrays at millimeter wavelengths produces fabrication difficulties, so that alternative methods are needed that employ simpler structures. This Final Report describes such an alternative scanning approach, and presents a group of new and simpler radiating structures suitable for millimeter-wave applications. The new class of scanning arrays described here achieves scanning in two dimensions by creating a one dimensional array of leaky-wave line-source antennas. The individual line sources are fed from one end and are scanned in elevation by electronic means or by varying the frequency. Scanning in the cross plane, and therefore in azimuth, is produced by phase shifters arranged in the feed structure of the one- dimensional array of line sources. Within the sector of space over which the arrays can be scanned, the radiation has negligible cross polarization, no blind spots and no grating lobes. These are significant and also unusual advantages. The novel features in the study reported here relate mainly to the new structures employed for the individual leaky-wave line sources and their combination into arrays, but also to analysis of the interactive effects produced when scanning occurs in both planes simultaneously.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1989
- Accession Number
- ADA213895
Entities
People
- Arthur A. Oliner