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):
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