Accession Number:

AD0608261

Title:

RESEARCH STUDIES ON PROBLEMS RELATED TO ANTENNAS.

Descriptive Note:

Quarterly progress rept. no. 7, 1 Mar-31 May 64,

Corporate Author:

ILLINOIS UNIV URBANA ELECTRICAL ENGINEERING RESEARCH LAB

Personal Author(s):

Report Date:

1964-10-01

Pagination or Media Count:

77.0

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.

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE