Accession Number : AD0691189

Title :   IMPROVED RADIATING ELEMENT FOR USE IN A GLIDE PATH IMAGE-TYPE ARRAY.

Descriptive Note : Final rept.,

Corporate Author : SCANWELL LABS INC SPRINGFIELD VA

Personal Author(s) : Elia,Armondo D.

Report Date : MAR 1969

Pagination or Media Count : 24

Abstract : The R. F. characteristics of an improved radiating element for glide slope use are described. Specifically, these characteristics are described in terms of the two principal plane radiation patterns, the vertical polarization level and the VSWR of the antenna. The method used for suppressing inherent vertical polarization levels is discussed. The network employed to match the antenna to a VSWR less than 1.2:1 is shown. The deicing capabilities are discussed and the conclusions of an FAA report on the deicing circuits are presented. An array study was performed to determine the number of elements required with a transmitter power of 15 watts. (Author)

Descriptors :   (*GLIDE PATH SYSTEMS, *ANTENNA ARRAYS), RADIO TRANSMISSION, ANTENNA RADIATION PATTERNS, POLARIZATION, STANDING WAVE RATIOS, ICE PREVENTION

Subject Categories : Air Navigation and Guidance

Distribution Statement : APPROVED FOR PUBLIC RELEASE