Accession Number:

AD0256883

Title:

INVESTIGATION OF METHODS OF SCANNING THE BEAM OF LARGE ANTENNAS

Descriptive Note:

Corporate Author:

STANFORD RESEARCH INST MENLO PARK CALIF

Personal Author(s):

• ANDREASEN,M.G.
• CARTER,P.S. JR.
• GABRIEL,W.F.

Report Date:

1961-03-01

Pagination or Media Count:

1.0

Abstract:

The study on wire-grid HF lens antennas is a new research topic that shows great promise. A theoretical and experimental investigation is presented of the properties of a wire grid placed above a ground plane. A general theoretical investigation on a radial horn with arbitrarily variable flare angle showed that the connection of a radial horn to the rim of a circular lens had a very minor effect upon the ideal radiation pattern of the lens, and that the reflection at the rim of the lens was also very small. A new type of electrically variable phase shifter was analyzed and demonstrated experimentally. Items also investigated included 1 mutual coupling effects in scanning antenna arrays, 2 reduction of the number of elements in an array, 3 a corrected line source feed for a spherical reflector, 4 the compound interferometer as a possible radar antenna, 5 linear arrays with unequal element spacing, 6 a toroidal-band line-source scanner, 7 various types of electronic phase shifters, and 8 lownoise parametric amplifi55 . Author

Descriptors:

• *ANTENNA RADIATION PATTERNS
• *ANTENNAS
• ANTENNA COMPONENTS
• ANTENNA FEEDS
• COUPLINGS
• ELECTRONIC SCANNERS
• FERROMAGNETIC MATERIALS
• HIGH FREQUENCY
• INTERFEROMETERS
• LENS ANTENNAS
• MATERIALS
• MATHEMATICAL ANALYSIS
• MICROWAVE AMPLIFIERS
• PHASE SHIFT CIRCUITS
• PROPAGATION
• RADAR ANTENNAS
• REFLECTORS
• SINGLE CRYSTALS
• THEORY
• TRANSMISSION LINES

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE