Comparative Analysis of Novel Gliding Walled Multilayer and Traditional Longitudinally Corrugated Waveguides for W-Band Millimeter-Wave Applications

Abstract

This paper presents an analysis of two W-band millimeter-wave guides: a new gliding walled multilayer waveguide and a traditional longitudinally corrugated waveguide. The gliding walled multilayer waveguide (GWMLW) is a novel waveguide architecture that uses walls along the multipath channel to prevent field leakage. Its construction, however, resembles the traditional longitudinal corrugated rectangular waveguide (LCRW). The paper elaborates on the creation process of the aluminum longitudinally corrugated prototype. Using the obtained simulation results, an LCR waveguide prototype similar to the GWMLW was fabricated. The measurement results of the LCR waveguide show a reflection coefficient below −40 dB with average transmission losses of −4 dB. Although the structures appear similar, there is a sharp difference in performance due to the manufacturing process. The differences between the simulated and measured performances of both types of waveguides are attributed to similar designs but different construction methods. Furthermore, the paper highlights the comparative differences in the design and manufacturing of these waveguides while offering perspectives on millimeter-wave transmission line technology.

Keywords

• Airgap
• corrugations
• longitudinal
• multilayer
• terahertz
• waveguide