A novel type of dual circular polarizer for simultaneously receiving and transmitting right-hand and left-hand circularly polarized waves is developed and tested. It consists of a H-plane T junction of rectangular waveguide, one circular waveguide as an E-plane arm located on top of the junction, and two metallic pins used for matching. The theoretical analysis and design of the three-physical-port and four-mode polarizer were researched by solving Scattering-Matrix of the network and using a full-wave electromagnetic simulation tool. The optimized polarizer has the advantages of a very compact size with a volume smaller than 0.8λ3, low complexity and manufacturing cost. A couple of the polarizer has been manufactured and tested, and the experimental results are basically consistent with the theories.
"Novel Compact Waveguide Dual Circular Polarizer," Progress In Electromagnetics Research,
Vol. 136, 1-16, 2013. doi:10.2528/PIER12121003
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