Tapered transmission lines for terahertz systems.
Opt Express
; 29(11): 17295-17303, 2021 May 24.
Article
em En
| MEDLINE
| ID: mdl-34154275
ABSTRACT
Complex terahertz (THz) System-on-Chip (TSoC) circuits require ultra-wideband low-loss low-dispersion interconnections between building-block components of various dimensions and characteristics. Tapered transmission lines, which enable the gradual transformation of both physical dimensions and characteristic impedance, are a convenient basis for these interconnections. In this paper, we quantify both experimentally and through simulation, the efficacy of transmission-line tapers connecting two different coplanar-strip transmission-line configurations, for frequencies up to 2.0 THz and with 25 GHz spectral resolution. We demonstrate tapers that enable transitioning from a small device-constrained transmission-line dimension (10 µm line width) to a lower-loss (20-40 µm line width) dimension, as a method to reduce the overall attenuation, and outline design constraints for tapered sections that have minimal detrimental impact on THz pulse propagation.
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MEDLINE
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En
Ano de publicação:
2021
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Article