This letter discusses the fabrication of coplanar waveguide (CPW) transmission lines by ultraprecise deposition (UPD) and their characterization in the $D$ -band (110–170 GHz). UPD is a direct printing process for the deposition of functional nanoinks. It has recently been introduced by XTPL as an alternative to aerosol jet and ink jet printing techniques. In UPD, a micrometer-scale nozzle is in direct contact with the substrate that is printed on. This approach allows the application of highly viscous nanoinks. A silver-filled ink with a viscosity exceeding $10^5 $ mPa $s$ is used in combination with a nozzle opening size of $5~m$ to print CPWs with an air gap of $10~m$ on Corning 1737 display glass and fused silica substrates. The lateral precision of the printing process is approximately 1– $2~m$ . To de-embed the transmission line performance, thru–reflect–line (TRL) calibration standards were manufactured on substrate. For a single, 400-nm-thick layer of the cured nanoink, the CPWs show approximately 1.0 dB/mm of loss at 140 GHz on fused silica and broadband transmission in the entire $D$ -band.
%0 Journal Article
%1 10214495
%A Roemhild, Martin
%A Gramlich, Georg
%A Baur, Holger
%A Zwick, Thomas
%A Fruehauf, Norbert
%D 2023
%J IEEE Microwave and Wireless Technology Letters
%K igm
%N 10
%P 1419-1422
%R 10.1109/LMWT.2023.3300569
%T Ultraprecise Printing of D-Band Transmission Lines
%V 33
%X This letter discusses the fabrication of coplanar waveguide (CPW) transmission lines by ultraprecise deposition (UPD) and their characterization in the $D$ -band (110–170 GHz). UPD is a direct printing process for the deposition of functional nanoinks. It has recently been introduced by XTPL as an alternative to aerosol jet and ink jet printing techniques. In UPD, a micrometer-scale nozzle is in direct contact with the substrate that is printed on. This approach allows the application of highly viscous nanoinks. A silver-filled ink with a viscosity exceeding $10^5 $ mPa $s$ is used in combination with a nozzle opening size of $5~m$ to print CPWs with an air gap of $10~m$ on Corning 1737 display glass and fused silica substrates. The lateral precision of the printing process is approximately 1– $2~m$ . To de-embed the transmission line performance, thru–reflect–line (TRL) calibration standards were manufactured on substrate. For a single, 400-nm-thick layer of the cured nanoink, the CPWs show approximately 1.0 dB/mm of loss at 140 GHz on fused silica and broadband transmission in the entire $D$ -band.
@article{10214495,
abstract = {This letter discusses the fabrication of coplanar waveguide (CPW) transmission lines by ultraprecise deposition (UPD) and their characterization in the $D$ -band (110–170 GHz). UPD is a direct printing process for the deposition of functional nanoinks. It has recently been introduced by XTPL as an alternative to aerosol jet and ink jet printing techniques. In UPD, a micrometer-scale nozzle is in direct contact with the substrate that is printed on. This approach allows the application of highly viscous nanoinks. A silver-filled ink with a viscosity exceeding $10^{5} $ mPa $\cdot \text{s}$ is used in combination with a nozzle opening size of $5~\mu \text{m}$ to print CPWs with an air gap of $10~\mu \text{m}$ on Corning 1737 display glass and fused silica substrates. The lateral precision of the printing process is approximately 1– $2~\mu \text{m}$ . To de-embed the transmission line performance, thru–reflect–line (TRL) calibration standards were manufactured on substrate. For a single, 400-nm-thick layer of the cured nanoink, the CPWs show approximately 1.0 dB/mm of loss at 140 GHz on fused silica and broadband transmission in the entire $D$ -band.},
added-at = {2023-10-09T09:49:53.000+0200},
author = {Roemhild, Martin and Gramlich, Georg and Baur, Holger and Zwick, Thomas and Fruehauf, Norbert},
biburl = {https://puma.ub.uni-stuttgart.de/bibtex/2ce3e54bd7eb31466256685c58ad365d8/pschalberger},
doi = {10.1109/LMWT.2023.3300569},
interhash = {2552f3d80ce6a4a56e230b4c25ac4eab},
intrahash = {ce3e54bd7eb31466256685c58ad365d8},
issn = {2771-9588},
journal = {IEEE Microwave and Wireless Technology Letters},
keywords = {igm},
month = oct,
number = 10,
pages = {1419-1422},
timestamp = {2023-10-09T09:49:53.000+0200},
title = {Ultraprecise Printing of D-Band Transmission Lines},
volume = 33,
year = 2023
}
