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2017-03-17
Design of Wideband Quad-Ridged Waveguide Orthomode Transducer at L-Band
By
Progress In Electromagnetics Research C, Vol. 72, 115-122, 2017
Abstract
In this paper, an L-band wideband quad-ridged waveguide orthomode transducer (OMT) for the Five hundred meter Aperture Spherical radio Telescope (FAST) is presented with a simple design principle. By designing two critical parts of the OMT separately and introducing matching rings into two orthogonal probes, an improved wideband performance has been realized successfully. The OMT is designed to operate across the 0.95 GHz-1.9 GHz band, and the simulation shows a return loss better than -20 dB for both polarizations, cross-polarized isolation levels over 45 dB and insertion loss lower than 0.15 dB over the entire bandwidth. The measured results are in good agreement with the simulations.
Citation
Jin Fan Yihua Yan Chengjin Jin Dezhi Zhan Jirun Luo , "Design of Wideband Quad-Ridged Waveguide Orthomode Transducer at L-Band," Progress In Electromagnetics Research C, Vol. 72, 115-122, 2017.
doi:10.2528/PIERC17010802
http://www.jpier.org/PIERC/pier.php?paper=17010802
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