Vol. 163
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2018-09-12
Design of Two Ku-Band Orthomode Transducers for Radio Astronomy Applications
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Progress In Electromagnetics Research, Vol. 163, 79-87, 2018
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
Renzo Nesti, Elia Orsi, Giuseppe Pelosi, and Stefano 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
References

1. Leal-Sevillano, C. A., J. R. Montejo-Garai, J. M. Rebollar, and J. A. Ruiz-Cruz, "CAD for dual-band polarizers in corrugated rectangular waveguide," 41st European Microwave Conference (EuMC), 822-825, Manchester, UK, Oct. 9-14, 2011.

2. Chang, C., S. Church, S. Tantawi, P. Larkoski, M. Sieth, and K. Devaraj, "Theory and experiment of a compact waveguide dual circular polarizer," Progress In Electromagnetics Research, Vol. 131, 211-225, 2012.
doi:10.2528/PIER12072601

3. Boifot, A. M., E. Lier, and T. Schaug-Pettersen, "Simple and broadband orthomode transducer (antenna feed)," IEE Proc. H, Vol. 137, 396-400, Dec. 1990.

4. Tiwari, V. N. and T. Tiwari, "Design and development of orthomode transducer for X-band frequency," 2015 IEEE Applied Electromagnetics Conference (AEMC), 1-2, Dec. 2015.

5. Ruiz-Cruz, J. A., J. R. Montejo-Garai, C. A. Leal-Sevillano, and J. M. Rebollar, "Development of folded dual-polarization dividers for broadband ortho-mode transducers," Asia-Paci c Microwave Conference (APMC), Vol. 2, 1-3, Melbourne, AU, Dec. 5-8, 2015.

6. Banham, R., L. Lucci, V. Natale, R. Nesti, G. Pelosi, S. Selleri, G. Tofani, and G. Valsecchi, "Electroformed front-end at 100 GHz for radio-astronomical applications," Microwave J., Vol. 48, No. 8, 112-122, 2005.

7. Park, S. G., H. Lee, and Y. H. Kim, "A turnstile junction waveguide orthomode transducer for the simultaneous dual polarization radar," Asia-Paci c Microwave Conference (APMC), 135-138, Dec. 7-10, 2009.

8. Meyer, M. A. and H. B. Goldberg, "Applications of the turnstile junction," IRE Trans. Microw. Theory Tech., Vol. 3, No. 6, 40-45, 1955.
doi:10.1109/TMTT.1955.1124990

9. Gentili, G. G., R. Nesti, G. Pelosi, and S. Selleri, "Orthomode transducers," The Wiley Encyclopedia of RF and Microwave Engineering, K. Chang, Ed., Vol. 4, 3547-3563, John Wiley & Sons, New York, NY, 2005.

10. Uher, U. R. J. and J. Bornemann, Waveguide Components for Antenna Feed Systems: Theory and CAD, Artech House, Norwood, MA, 1993.

11. Lucci, L., R. Nesti, G. Pelosi, and S. Selleri, "A stackable constant-width corrugated horn design for high-performance and low-cost feed arrays at millimeter wavelengths," IEEE Antennas Wireless Propag. Lett., Vol. 11, 1162-1165, 2012.
doi:10.1109/LAWP.2012.2219847

12. Chang, C., S. G. Tantawi, S. Church, J. Neilson, and P. V. Larkoski, "Novel compact waveguide dual circular polarizer," Progress In Electromagnetics Research, Vol. 136, 1-16, 2013.
doi:10.2528/PIER12121003

13. Navarrini, A. and R. L. Plambeck, "A turnstile junction waveguide orthomode transducer," IEEE Trans. Microw. Theory Tech., Vol. 54, 272-277, January 2006.
doi:10.1109/TMTT.2005.860505

14. Srikanth, S. and M. Solatka, "A compact full waveguide band turnstile junction orthomode transducer," XXXth URSI General Assembly and Scienti c Symposium, 1-4, Istanbul, TR, Aug. 13-20, 2011.

15. San-Blas, A.-A., F. Perez, J. Gil, F. Mira, V. Boria, and B. Gimeno Martinez, "Full-wave analysis ," Progress In Electromagnetics Research Letters, Vol. 24, 149-158, 2011.
doi:10.2528/PIERL11051703

16. Navarrini, A. and R. Nesti, "Symmetric reverse-coupling waveguide orthomode transducer for the 3-mm band," IEEE Trans. Microw. Theory Tech., Vol. 57, No. 1, 80-88, 2009.
doi:10.1109/TMTT.2008.2008943

17. Ruiz-Cruz, J. A., J. R. Montejo-Garai, J. M. Leal-Sevillano, and C. A. Rebollar, "Orthomode transducers with folded double-symmetry junctions for broadband and compact antenna feed," IEEE Trans. Antennas Propag., Vol. 66, No. 3, 1160-1168, 2018.
doi:10.1109/TAP.2018.2794364

18. Virone, G., O. A. Peverini, M. Lumia, G. Addamo, and R. Tascone, "Platelet orthomode transducer for Q-band correlation polarimeter clusters," IEEE Trans. Antennas Propag., Vol. 62, No. 7, 1487-1494, 2014.