RESEARCH STUDIES ON PROBLEMS RELATED TO ANTENNAS.
Abstract
Topics included are: The observed properties of log-periodic antennas through experimental and analytical investigation of their uniform periodic counterparts; The development of a log-periodic array of cavity-backed slots which will produce vertically polarized radiation without having the structure projecting above the ground plane; An LP array of magnetic dipole elements; Design information about a class of periodic and log-periodic leaky wave structures which are potentially highgain, frequency-independent antennas; Characteristics of present forms and new versions of the conical logarithmic spiral antenna; The basic characteristics of the multi-arm log-spiral antennas and their application in specific systems; The feasibility of utilizing varactor diodes in a backfire antenna to produce amplification in the antenna itself and thereby improve signal-to-noise performance; Wave propagation along helical conductors; A class of periodic structures for wide band applications; Investigation of a class of log-periodic structures; Radiation lens illuminated from a Goubau beam-waveguide; Radiation from circular waveguides; Omnidirectional and steerable beam antenna development at millimeter wavelengths; Millimeter antenna test instrumentation; Components for millimeter wave antennas.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1964
- Accession Number
- AD0608261
Entities
People
- James Rippin
Organizations
- University of Illinois Urbana–Champaign