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Design of Dual-band Ortho-mode Transducer for Ka-band VSATs  

Lee, Hongyeol (한국전자통신연구원 방송통신미디어연구부문 위성무선RF기술연구실)
Uhm, Manseok (한국전자통신연구원 방송통신미디어연구부문 위성무선RF기술연구실)
Yun, Sohyeun (한국전자통신연구원 방송통신미디어연구부문 위성무선RF기술연구실)
Yom, Inbok (한국전자통신연구원 방송통신미디어연구부문 위성무선RF기술연구실)
Kim, Hyunsoo ((주)인텔리안테크놀로지스)
Park, Jeongwoo ((주)인텔리안테크놀로지스)
Publication Information
Journal of Satellite, Information and Communications / v.8, no.3, 2013 , pp. 47-51 More about this Journal
Abstract
In this paper, we present design and test results of a Ka-band dual-band ortho-mode transducer (OMT) for use in a feed assembly for the very small aperture terminals (VSATs). The designed ortho-mode transducer have wideband characteristics to separate the signals that have two orthogonal linear polarizations operating at 20GHz of receive frequency band and at 30GHz of transmit frequency band. In addition, in order to reduce the volume of the feed assebly, a Boifot based ortho-mode transducer has been designed with a dual-band. Experimental results for the design verification, the return loss in the receive band and in the transmit band for the horizontal polarization showed over 20dB and 21dB, respectively, and for the vertical polarization showed over 20dB and 24dB, respectively. The port isolation for the horizontal polarization and the vertical polarization showed over 43dB and 52dB, respectively, in the receive band and in the vertical band.
Keywords
Ka-band; OMT; dual-band; satellite; VSAT;
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  • Reference
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