Accession Number : ADA017298

Title :   Flight Test Evaluation of a 240 to 400 MHz Cavity-Backed Cross Open-Sleeve Dipole Antenna.

Descriptive Note : Test rept.,


Personal Author(s) : Nawman,Lowell R. ; King,Howard E.

Report Date : 10 OCT 1975

Pagination or Media Count : 31

Abstract : The gain and radiation patterns of a cavity-backed open-sleeve cross dipole antenna mounted on a C135-type aircraft were measured bia a satellite-to-aircraft link at 249.1 MHz. The antenna was designed for operation over the 240 to 400 MHz frequency band and has maximum dimensions of 21.5 in. square by 6 in. deep. For the purposes of the aircraft flight tests, the antenna was externally mounted to the fuselage and covered with a radome. The gain and radiation patterns of the antenna measured in the antenna range with the cavity mounted on a 9.5-ft by 9.5-ft cylindrically curved ground plane are also shown for comparison.

Descriptors :   *Dipole antennas, *Aircraft antennas, Antenna radiation patterns, Gain, Cavities, Ultrahigh frequency, Very high frequency, Air to space, Jet transport planes

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE