Novel Orthomode Transducer Scalable to Terahertz Frequencies
Paper in proceeding, 2024

We present the design of a novel orthomode transducer, OMT, suitable for scaling up to Terahertz frequencies. The current design aims for the frequency band 270-380 GHz. The OMT combines waveguide components made with conventional milling with substrate-based parts fabricated using microfabrication techniques. This allows critical dimensions of the OMT conventionally to be mechanically machined parts being replaced by photolithographically defined and microfabricated structures. The paper provides details on the OMT layout, simulations, fabrication and tests. The two fabricated and tested prototype OMTs show similar performance providing better than 30 dB cross-pol suppression. The OMTs also demonstrated broadband performance with an operational band of 260-385 GHz corresponding to a 38,8% fractional bandwidth. With the microfabricated polarization splitting junction and relatively simple waveguide circuitry, the OMT has very good potential to be scaled up to higher frequencies, probably up to 1.5 THz.

Author

Nils Patriksson

Student at Chalmers

Denis Meledin

Chalmers, Space, Earth and Environment, Onsala Space Observatory

Igor Lapkin

Chalmers, Space, Earth and Environment, Onsala Space Observatory

Cristian Daniel López

Chalmers, Space, Earth and Environment, Onsala Space Observatory

Alexei Pavolotski

Chalmers, Space, Earth and Environment, Onsala Space Observatory

Leif Helldner

Chalmers, Space, Earth and Environment, Onsala Space Observatory

Sven-Erik Ferm

Chalmers, Space, Earth and Environment, Onsala Space Observatory

Vincent Desmaris

Chalmers, Space, Earth and Environment, Onsala Space Observatory

Victor Belitsky

Chalmers, Space, Earth and Environment, Onsala Space Observatory

2024 4th URSI Atlantic Radio Science Meeting, AT-RASC 2024


9789463968102 (ISBN)

4th URSI Atlantic Radio Science Meeting, AT-RASC 2024
Meloneras, Spain,

Subject Categories

Telecommunications

Astronomy, Astrophysics and Cosmology

Other Electrical Engineering, Electronic Engineering, Information Engineering

Condensed Matter Physics

DOI

10.46620/URSIATRASC24/IPKB8830

ISBN

[9789463968102]

More information

Latest update

9/26/2024