Accession Number : AD0256970

Title :   CIRCULARLY POLARIZED RADIO WAVES

Corporate Author : ARMY ELECTRONICS LABS FORT MONMOUTH N J

Personal Author(s) : HATKIN,LEONARD

Report Date : JAN 1961

Pagination or Media Count : 1

Abstract : A circularly polarized wave is the resultant of two plane polarized waves of the same frequency and magnitude traveling along a common axis of propagation, polarized at right angles to one another and differing in time phase by 90 degrees. UHF techniques producing circular polarization can employ turnstile, dipole-loop, or helix antennas. At microwave frequencies, optical techniques can be used to transform in waveguide or free space an already launched linearly polarized wave into a circularly polarized wave. A circularly polarized antenna will not receive its own echo unless the transmitted wave undergoes two reflections. (Author)

Descriptors :   *POLARIZATION, *PROPAGATION, *RADIO WAVES, ANTENNA RADIATION PATTERNS, ANTENNAS, DIPOLE ANTENNAS, ELECTROMAGNETIC RADIATION, HELICAL ANTENNAS, MICROWAVES, ULTRAHIGH FREQUENCY

Distribution Statement : APPROVED FOR PUBLIC RELEASE