"A technique was developed which successfully predicted the reactance of a shunt cavity exciting the air frame of a small supersonic aircraft as an antenna. This was possible by the use of the wire above a ground place approximation which closely defined the characteristic impedance of the shunt fed cavity. A correlation was made between the maximum values of parallel resistance of the shunt fed cavity and the length of the air frame or portions of the air frame, which at this point were found to be a quarter wavelength in length. Measurements of the impedance of the shunt-feed system were made on a full scale mock-up of the aft fuselage, production aft fuselage and a production aircraft. The data from these measurements provided a timely flow of the impedance definition of the antenna, which a coupler (impedance matching device) would be required to tune. Tests were performed in an altitude chamber on a full scale mock-up of the aft fuselage to determine the potential required to develop high voltage breakdown. The tests were performed in various aircraft equipment configurations in an effort to determine the most advantageous means of correcting a high voltage breakdown problem in the event final analysis indicated a problem would exist at environmental extremes attained during the aircraft flight envelope. Flight tests were performed to compare the shunt-feed system on a small supersonic aircraft versus a long wire installation on a larger commercial aircraft. The results proved the shunt installation to be comparable to or better than the long wire installation at frequencies above 5 megacycles"--Abstract, page ii-iii.
Skitek, G. G. (Gabriel G.)
Pagano, Sylvester J., 1924-2006
Rivers, Jack L.
Hord, William Eugene
Electrical and Computer Engineering
M.S. in Electrical Engineering
University of Missouri at Rolla
viii, 82 pages
© 1967 Larry J. Nanney, All rights reserved.
Thesis - Open Access
Radio -- Antennas -- Design and construction
Radio -- Transmitter-receivers
Print OCLC #
Electronic OCLC #
Link to Catalog Record
Nanney, Larry Joseph, "A shunt-feed antenna system on a small supersonic aircraft" (1967). Masters Theses. 5173.