@Article{macau_mods_00002654, author = {Bartlett, Chad Daniel and Malav{\'e}, Antonio and Letz, Martin and H{\"o}ft, Michael}, title = {Structured-Glass Waveguide Technology for High-Performance Millimetre-Wave Components and Systems}, journal = {IEEE Journal of microwaves}, year = {2022}, publisher = {IEEE}, address = {New York, NY}, volume = {2}, number = {2}, pages = {307--315}, keywords = {Waveguide components; Fabrication; Glass; Production; Micromachining; Metallization; Standards; Bandpass filter; laser-induced micromachining; microfabrication; millimetre-wave; passive components; structured glass; waveguide technology; W-band}, abstract = {This work presents a novel waveguide medium based on laser-induced structured-glass for the design of high-end millimetre-wave components and systems. The material properties, fabrication process and functional attributes of the structured-glass technology are first described and then applied in order to demonstrate a fourth-order bandpass filter prototype operating within the W-band frequency range, centered around 88 GHz with a narrow fractional bandwidth of 2.3{\%}. The basic filter design, dimensional considerations, and assembly process are discussed in order to outline the fabrication process. The prototype filter, along with its associated feed-line transitions and split-block interface are measured and characterized in the laboratory in order to validate the design approach. The measured response is shown to be exceptionally accurate; the insertion loss is found to be approximately 1.43 dB - 1.97 dB throughout the measured passband with a return loss of better than 22 dB and center-frequency offset of approximately 0.117{\%}. A comparison to existing technologies is discussed in order to highlight the advantages of the proposed medium and to contrast the differences in both manufacture and achievable results for high-end components.}, issn = {2692-8388}, doi = {10.1109/JMW.2022.3155793}, url = {https://macau.uni-kiel.de/receive/macau_mods_00002654}, url = {https://doi.org/10.1109/JMW.2022.3155793}, file = {:https://macau.uni-kiel.de/servlets/MCRFileNodeServlet/macau_derivate_00003781/JMicrowaves%20-%20Glass%20Filter.pdf:PDF}, language = {en} }