Experimental comparison of waveguide filters at W-band implemented by different machining processes and split-block

Abstract

The aim of this work is to explore different machining processes and different split-block, getting important experimental information for the design of passive waveguide components at W-band. To this end, two all-pole response filters are machined by different techniques: electro-discharge and milling, and split-block: H-plane and E-plane. Some interesting results, obtained in the design, fabrication, and measure of waveguide filters at W-band, such as tolerances of the different processes and level of insertion loss, are reported.

Keywords:

• W-band
• waveguide
• filter
• low loss

Acknowledgments

The authors thank the companies Inmepre and Bazus, Spain for the manufacturing and Centro Astronómico de Yebes, Spain, specially Félix Tercero and Tim Finn for their valuable help with the measurements.