Imperial College London
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Professor Stepan Lucyszyn FREng FIEEE

Faculty of Engineering, Department of Electrical and Electronic Engineering

Professor of Millimetre-wave Systems
 
 
 
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Contact

 

+44 (0)20 7594 6167s.lucyszyn Website CV

 
 
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Assistant

 

Ms Susan Brace +44 (0)20 7594 6215

 
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Location

 

602Electrical EngineeringSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Zhu:2022:10.1109/ACCESS.2022.3162586,
author = {Zhu, L and Payapulli, R and Shin, S-H and Stanley, M and Ridler, N and Lucyszyn, S},
doi = {10.1109/ACCESS.2022.3162586},
journal = {IEEE Access},
pages = {38944--38963},
title = {3-D printing quantization predistortion applied to sub-THz chained-function filters},
url = {http://dx.doi.org/10.1109/ACCESS.2022.3162586},
volume = {10},
year = {2022}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - This paper investigates physical dimension limits associated with the low-cost, polymer-based masked stereolithography apparatus (MSLA) 3-D printer, with 50 μm pixels defining the minimum print feature size. Based on the discretization properties of our MSLA 3-D printer, multi-step quantization predistortion is introduced to correct for registration errors between the CAD drawing and slicing software. This methodology is applied to G-band 5th order metal-pipe rectangular waveguide filters, where the pixel pitch has an equivalent electrical length of 8.5° at center frequency. When compared to the reference Chebyshev filter, our chained-function filter exhibits superior S-parameter measurements, with a low insertion loss of only 0.6 dB at its center frequency of 182 GHz, having a 0.9% frequency shift, and an acceptable worst-case passband return loss of 13 dB. Moreover, with measured dimensions after the 3-D printed parts have been commercially electroplated with a 50 μm thick layer of copper, the re-simulations are in good agreement with the S-parameter measurements. For the first time, systematic (quantization) errors associated with a pixel-based 3-D printer have been characterized and our robust predistortion methodology has been successfully demonstrated with an upper-millimeter-wave circuit. Indeed, we report the first polymer-based 3-D printed filters that operate above W-band. As pixel sizes continue to shrink, more resilient (sub-)THz filters with ever-higher frequencies of operation and more demanding specifications can be 3-D printed. Moreover, our work opens-up new opportunities for any pixel-based technology, which exhibits registration errors, with its application critically dependent on its minimum feature size.
AU  - Zhu,L
AU  - Payapulli,R
AU  - Shin,S-H
AU  - Stanley,M
AU  - Ridler,N
AU  - Lucyszyn,S
DO  - 10.1109/ACCESS.2022.3162586
EP  - 38963
PY  - 2022///
SN  - 2169-3536
SP  - 38944
TI  - 3-D printing quantization predistortion applied to sub-THz chained-function filters
T2  - IEEE Access
UR  - http://dx.doi.org/10.1109/ACCESS.2022.3162586
UR  - https://ieeexplore.ieee.org/document/9743466
UR  - http://hdl.handle.net/10044/1/96096
VL  - 10
ER  -
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