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Asymmetric double‐band orthomode transducer with high polarization purity
Author(s) -
Rebollar J. M.,
Esteban J.,
De Frutos J.
Publication year - 1999
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/(sici)1098-2760(19990520)21:4<265::aid-mop9>3.0.co;2-5
Subject(s) - microwave , transducer , polarization (electrochemistry) , scattering , gsm , scattering parameters , insertion loss , multi band device , return loss , electronic engineering , frequency band , engineering , physics , optics , acoustics , materials science , electrical engineering , telecommunications , bandwidth (computing) , chemistry , antenna (radio)
An asymmetric and very compact orthomode transducer for dual‐frequency‐band applications with a high polarization purity is proposed and analyzed by means of a hybrid full‐wave characterization based on the generalized admittance matrix (GAM) and the generalized scattering matrix (GSM) obtained with mode matching. An accurate, robust, and efficient computer code based on this procedure has been developed and used for the design of a dual‐frequency OMT in the Ku‐band. The numerical/experimental results for the structure confirm its excellent performance, i.e., low return and insertion losses, high isolation, and, especially, high polarization purity. ©1999 John Wiley & Sons, Inc. Microwave Opt Technol Lett 21: 265–267, 1999.