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DESIGN CURVES FOR A CIRCULAR POLARIZER
MASSACHUSETTS INST OF TECH LEXINGTON LINCOLN LAB
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A common method of producing a circularly-polar ized wave in a constant cross section waveguide consists of exciting two waves which are linearly polarized and mutually orthogonal. Adjusting the relative phase velocity of the two waves enables one to produce a single wave which is circularly polarized. Occasionally it is desired to produce right-hand circular polarization at one frequency and left-hand circular polarization at another. The design parameters are usually the ratio of cut-off wavelengths of the two waves, the length of the polarizing section and the frequencies of operation. The theory of operation and a set of design curves showing the relationship between the parameters are presented.
APPROVED FOR PUBLIC RELEASE