DOI: 10.1017/s1759078726103912 ISSN: 1759-0787
Low loss PTFE core metal/dielectric waveguide for W band applications
Prakash Gyawali, Alexandre Renau, Ludovic Burgnies, Ronan Cranny, Julien Logette, Stephanie Geas, Antoine Baudin, Yanis Charif, Pascal Szriftgiser, Guillaume DucournauAbstract
This study presents the design and experimental validation of a flexible, low-loss waveguide operating in the single-mode regime in W-band (75–110 GHz). The waveguide design and geometric parameters were numerically optimized using electromagnetic simulations. Fabrication was carried out using industrial-grade polytetrafluoroethylene extrusion and metal ribbon deposition processes. The waveguide performance, namely the propagation loss and effective refractive index, was characterized using a vector network analyzer in the 70–120 GHz frequency range. Measurements demonstrate a propagation loss lower than 11.7 dB/m in the W-band.