Accession Number : AD0426932


Title :   MISSILE-BORNE TRACKING ANTENNA.


Descriptive Note : Final progress rept. for 1963,


Corporate Author : ARMY MISSILE COMMAND REDSTONE ARSENAL ALA ARMY INERTIAL GUIDANCE AND CONTROL LAB AND CENTER


Personal Author(s) : Howell,James E


Report Date : 09 Jul 1963


Pagination or Media Count : 52


Abstract : The development of electronically steerable, automatically self-directing, missile-borne antennas is described. The literature was searched and a preliminary study was made on the use of circularly polarized antennas for produc ing the necessary phase shifts required in the lobing of antenna arrays. Helical antennas were used first in tests around 5,000 mc in an effort to determine the phasing characteristics and feasibility of circularly polarized antennas. Next, a cavity-backed Archimedean spiral antenna and balun were designed and fabricated for 5,000 mc operation. A logarithmic spiral antenna was also designed and fabricated for use in the developmental antenna tests. The spiral antennas were fabricated from copper clad board by printed circuit etching techniques. Some of the problems encountered during laboratory tests were balun unbalance, radiation from the balun and the detrimental effects of the reflected wave when using cavities. (Author)


Descriptors :   POLARIZATION , AUTOMATIC , TRACKING , ANTENNA FEEDS , COAXIAL CABLES , ANTENNAS , ANTENNA LOBES , SUPERHIGH FREQUENCY , HELICAL ANTENNAS , PRINTED CIRCUITS , CHEMICAL MILLING , CAVITIES , GRANULES , PHASE SHIFT CIRCUITS , ANTENNAS


Distribution Statement : APPROVED FOR PUBLIC RELEASE