REALIZATION OF KU-BAND ORTHO MODE TRANSDUCER WITH HIGH PORT TO PORT ISOLATION | Zendy

Pramendra Kumar Verma | Zendy; Raj Kumar | Zendy

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REALIZATION OF KU-BAND ORTHO MODE TRANSDUCER WITH HIGH PORT TO PORT ISOLATION

Author(s) -

Pramendra Kumar Verma,

Raj Kumar

Publication year - 2018

Publication title -

progress in electromagnetics research letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.245

H-Index - 33

ISSN - 1937-6480

DOI - 10.2528/pierl18012201

Subject(s) - port (circuit theory) , realization (probability) , isolation (microbiology) , transducer , ku band , mode (computer interface) , engineering , computer science , acoustics , electrical engineering , physics , mathematics , biology , operating system , statistics , microbiology and biotechnology

Present paper describes the design, development and evaluation of a wideband, compact Ku-band orthomode transducer (OMT) for SATCOM application. It consists of a square waveguide output section, square waveguide to rectangular waveguide transition, straight waveguide port and an orthogonally coupled port. A tapered waveguide section has been used to couple the orthogonal RF (Radio Frequency) signal to the common port. The designed OMT has a transmit port with frequency band 13.75 GHz–14.5 GHz and a receive port with frequency band 10.95–12.5 GHz. Finite element method based ANSYS’s High Frequency Structure Simulator (HFSS) EM software has been used for simulation and optimization of OMT. Measured reflection coefficients of OMT over transmission and reception frequency bands are better than −15 dB and −12 dB, respectively. Designed OMT has port to port isolation better than 45 dB against 30 dB isolation of conventional OMT available in market.

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