Accession Number : AD0650896

Title :   EVALUATION OF UHF ANTENNA COUPLERS TYPES CU-691/U AND CU-692/U.

Descriptive Note : Final rept.,

Corporate Author : NATIONAL AVIATION FACILITIES EXPERIMENTAL CENTER ATLANTIC CITY N J

Personal Author(s) : Dong,James G.

Report Date : NOV 1965

Pagination or Media Count : 42

Abstract : Laboratory tests were conducted on UHF Antenna Couplers, Types CU-691/U and CU-692/U to determine their suitability for FAA use. The CU-691/U Coupler was designed for four-channel operation and the CU-692/U, two-channel operation. Both systems employed passive networks comprised of tandem coaxial cavities operating as selective filters. These filters, and a suitable matching network combination, were designed to provide the capability of connecting more than one transmitter and/or receiver to a single antenna. Measurements were made of such operating parameters as VSWR, selectivity, insertion loss, and isolation. Orbital flight patterns of the antenna radiation, when utilizing the Antenna Coupler, Type CU-691/U were also accomplished. Based on the results of the evaluation, it was concluded that the Antenna Couplers, as designed, were suitable for FAA use. It was recommended that the use of these Antenna Couplers be considered in the planning of Remote Communication Air/Ground Systems. (Author)

Descriptors :   (*ANTENNA COMPONENTS, COUPLING CIRCUITS), (*ANTENNA FEEDS, ULTRAHIGH FREQUENCY), CAVITY RESONATORS, ANTENNA RADIATION PATTERNS, PERFORMANCE(ENGINEERING), AIR TRAFFIC CONTROL SYSTEMS, COMMUNICATION EQUIPMENT

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE