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An x‐band waveguide orthomode transducer with integrated filters
Author(s) -
Gao Yang,
Shang Xiaobang,
Wang Yi,
Lancaster Michael J.
Publication year - 2020
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/mop.31986
Subject(s) - band pass filter , return loss , resonator , transducer , filter (signal processing) , insertion loss , waveguide , materials science , waveguide filter , acoustics , electronic engineering , engineering , optoelectronics , electrical engineering , prototype filter , physics , filter design , antenna (radio)
This letter presents a novel waveguide orthomode transducer (OMT) with integrated filters. Resonator‐based bandpass filters are used for the two channels forming a duplexing OMT. As an example, a two‐channel duplexing OMT is designed with channels at 9.9‐10.1 GHz and 10.9‐11.1 GHz. A good filter response with 20 dB return loss is achieved for both the channels. The upper and lower bands are isolated to −80 dB due to the filtering elements and a transmission zero. This new multifunction compact filter‐OMT design leads to the size reduction and improved inter‐band isolation. A CNC machined waveguide OMT is demonstrated and its performance is verified with excellent agreement between the electromagnetic wave (EM) simulation and measured results.