Broadband, High Efficiency OMT in E-Band

Le Sage, Gregory Peter; Nantista, Christopher D.

doi:10.1109/access.2022.3180342

Broadband, High Efficiency OMT in E-Band

Journal Article · Mon Jun 06 00:00:00 EDT 2022 · IEEE Access

DOI:https://doi.org/10.1109/access.2022.3180342· OSTI ID:1875911

^[1]; Nantista, Christopher D. ^[1]

SLAC National Accelerator Lab., Menlo Park, CA (United States)

A high-performance, broadband E-Band orthomode transducer (OMT) was designed and fabricated for a dedicated frequency converter. Cross-polarized signals between 71 and 86 GHz, received in a TE₁₁ mode circular waveguide needed to be split into separate horizontal and vertical polarization channels. The purpose of the OMT is to service the 71–76 and 81–86 GHz licensed communication bands. The main goal of OMT design is maximized transmission across the design bandwidth. Every fraction of a dB lost before the first low noise amplifier is a direct loss in SNR for the overall system. Several different design approaches were simulated, and several OMT’s and ancillary components were built and tested. In the end, practical limitations determined the final path of the completed device. The final product performed several tenths of a dB better than commercially available devices and better than most reported in academic literature. Lessons learned included which construction techniques worked and did not work, as well as what compromises are acceptable.

View Accepted Manuscript (DOE)

Research Organization:: SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: AC02-76SF00515

OSTI ID:: 1875911

Journal Information:: IEEE Access, Journal Name: IEEE Access Vol. 10; ISSN 2169-3536

Publisher:: IEEECopyright Statement

Country of Publication:: United States

Language:: English

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Related Subjects

42 ENGINEERING
E-band
bandwidth
efficiency
insertion loss.
microwave
orthomode transducer
polarization

Broadband, High Efficiency OMT in E-Band

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