Patent ID: 8077103
Filing Date: 2011-12-13
Classification: H01Q

Abstract:
1. A process for tuning an antenna for optimizing the simultaneous propagation and/or reception of dual circularly polarized electromagnetic waves, said antenna includes a cylindrical waveguide having an orthomode transducer forming first and second ports with first and second pins therein oriented orthogonally with each other, a septum intermediate said first pin and said second pin and aligned with said first in within said cylindrical waveguide and residing in proximity thereto, and a polarizer mechanism having six radially oriented screws, comprising the steps of: simultaneously applying left hand circular polarized electromagnetic waves and right hand circular polarized electromagnetic waves to said antenna; measuring the response of said first and second pins of said orthomode transducer to said respective left hand and right hand circular polarized electromagnetic waves, said second pin residing in proximity to a closed end of said cylindrical waveguide and said first pin residing distally with respect to said closed end of said cylindrical waveguide; adjusting the polarizer mechanism of said antenna to simultaneously improve said respective responses of said first and second pins, said polarizer mechanism resides between said first pin and an open end of said cylindrical waveguide, said adjustment of said polarizer mechanism includes varying the insertion depth of said screws within said polarizer mechanism; repeating said measuring and adjusting steps until said respective responses are simultaneously optimized.