Polymer-Based 3-D Printed 140 to 220 GHz Metal Waveguide Thru Lines, Twist and Filters
نویسندگان
چکیده
This paper demonstrates the current state-of-the-art in low-cost, low loss ruggedized polymer-based 3-D printed G-band (140 to 220 GHz) metal-pipe rectangular waveguide (MPRWG) components. From a unique and exhaustive up-to-date literature review, main limitations for split-block MPRWGs are identified as electromagnetic (EM) radiation leakage, assembly part alignment manufacturing accuracy. To mitigate against leakage misalignment, we investigate ‘trough-and-lid’ solution. approach is successfully employed proof-of-concept thru lines, first 90° twist symmetrical diaphragm inductive iris-coupled bandpass filters (BPFs) operating above 110 GHz. An inexpensive desktop masked stereolithography apparatus printer commercial copper electroplating service used. Surface roughness losses calculated applied EM (re-)simulations, using two modifications of Hemispherical model. The 7.4 mm line exhibits measured average dissipative attenuation only 12.7 dB/m, with rectangular-to-trapezoidal cross-sectional distortion being contributor loss. commensurate performance its counterpart, despite much lower costs. A detailed time-domain reflectometry analysis flange quality lines twists has also been included. Finally, new systematic iris corner rounding compensation technique, correct passband frequency down-shifting BPFs. Here, 175 GHz exemplar 0.5% center up-shifting. trough-and-lid now viable solution upper-mm-wave MPRWG With this technology becoming less expensive more accurate, higher frequencies and/or demanding specifications can be implemented.
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ژورنال
عنوان ژورنال: IEEE Access
سال: 2023
ISSN: ['2169-3536']
DOI: https://doi.org/10.1109/access.2023.3261241