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Progress In Electromagnetics Research
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DESIGN OF TWO KU-BAND ORTHOMODE TRANSDUCERS FOR RADIO ASTRONOMY APPLICATIONS

By R. Nesti, E. Orsi, G. Pelosi, and S. Selleri

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Abstract:
Two different designs of orthomode transducers for the coming Ku-band receiver of the Italian radio telescope in Medicina are presented and compared, showing design details, describing numerical simulations and discussing manufacturing and test results. Such orthomode transducers provide a tradeoff between low-loss and phase-matching, according to different initial requirements where the final receiver architecture has to be frozen. Both designs show high performance over the operative 13.5-18.1 GHz Ku-band. One of the OMT designs has been fabricated and tested, showing results in very good agreement with simulations.

Citation:
R. Nesti, E. Orsi, G. Pelosi, and S. Selleri, "Design of Two Ku-Band Orthomode Transducers for Radio Astronomy Applications," Progress In Electromagnetics Research, Vol. 163, 79-87, 2018.
doi:10.2528/PIER18062002
http://www.jpier.org/PIER/pier.php?paper=18062002

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