High Capacity Dual-Polarization THz-Wireless Transmission in the 300 GHz Band using a Broadband Orthomode Transducer

We report on the broadband, dual-polarized THz-wireless transmission with >100 Gb/s net data rate in the 300 GHz band, employing a new broadband orthomode transducer. The orthomode transducer is realized by a new microstrip probe-fed circular waveguide transition. It omits the use of hybrids for...

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Bibliographic Details
Published in2023 IEEE/MTT-S International Microwave Symposium - IMS 2023 pp. 439 - 442
Main Authors Stiewe, Oliver, Merkle, Thomas, Elschner, Robert, Hoppe, Joachim, Schubert, Colja, Freund, Ronald
Format Conference Proceeding
LanguageEnglish
Published IEEE 11.06.2023
Subjects
6G communications
Crosstalk
Degradation
Digital signal processing
Microwave measurement
Multiplexing
Orthomode transducer
Polarization multiplexer
Symbols
Terahertz wireless communications
Transducers
Wireless communication
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Summary:We report on the broadband, dual-polarized THz-wireless transmission with >100 Gb/s net data rate in the 300 GHz band, employing a new broadband orthomode transducer. The orthomode transducer is realized by a new microstrip probe-fed circular waveguide transition. It omits the use of hybrids for the commonly used balanced 4-port excitation and, for that reason, is more suitable for a planar active integration with transceiver MMICs. The characterization of the orthomode transducer in back-to-back configuration shows very low losses of less than 1.5 dB per transition over a bandwidth of more than 40 GHz with a total back-to-back cross polarization better than 25 dB. Constellation diagrams and signal spectra from the dual-polarized wireless transmission experiments are compared to single-polarized transmission, showing only small degradations due to cross-polarization effects. The paper demonstrates that this simplified polarization multiplexer is a potential candidate for use in a wireless extender of a coherent fiber-optical transmission system.
ISSN:2576-7216
DOI:10.1109/IMS37964.2023.10187965