Bulja, Senad and Mirshekar‐Syahkal, Dariush and James, Richard and Day, Sally E and Fernández, F Aníbal (2013) Effective dielectric constant of top grounded coplanar waveguide on liquid crystal superstrate. Microwave and Optical Technology Letters, 55 (6). pp. 1416-1418. DOI https://doi.org/10.1002/mop.27564
Bulja, Senad and Mirshekar‐Syahkal, Dariush and James, Richard and Day, Sally E and Fernández, F Aníbal (2013) Effective dielectric constant of top grounded coplanar waveguide on liquid crystal superstrate. Microwave and Optical Technology Letters, 55 (6). pp. 1416-1418. DOI https://doi.org/10.1002/mop.27564
Bulja, Senad and Mirshekar‐Syahkal, Dariush and James, Richard and Day, Sally E and Fernández, F Aníbal (2013) Effective dielectric constant of top grounded coplanar waveguide on liquid crystal superstrate. Microwave and Optical Technology Letters, 55 (6). pp. 1416-1418. DOI https://doi.org/10.1002/mop.27564
Abstract
The effective dielectric constant of the top grounded coplanar waveguide with a liquid crystal (LC) superstrate for phase shifting applications is investigated in the frequency range of 30-60 GHz. Two nematic LC mixtures, namely E7 and MDA-00-3506, are used as the superstrate. The measurements show that MDA-00-3506 offers higher values of phase shift per millimeter than its E7 counterpart. In particular, the MDA-00-3506 provides 3.14°/mm, whereas E7 gives 2.79°/mm at 60 GHz. The results of the dielectric constants from measurement and computer modeling are found to agree to within 5%. For the modeling, a comprehensive finite element package predicting the local alignment of LC molecules and effective dielectric constant at different bias voltages and frequencies are used. Copyright © 2013 Wiley Periodicals, Inc.
Item Type: | Article |
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Uncontrolled Keywords: | CPW; liquid crystal; finite element method; mm-wave devices |
Subjects: | Q Science > QA Mathematics > QA75 Electronic computers. Computer science |
Divisions: | Faculty of Science and Health Faculty of Science and Health > Computer Science and Electronic Engineering, School of |
SWORD Depositor: | Unnamed user with email elements@essex.ac.uk |
Depositing User: | Unnamed user with email elements@essex.ac.uk |
Date Deposited: | 12 Aug 2014 15:03 |
Last Modified: | 23 Sep 2022 18:32 |
URI: | http://repository.essex.ac.uk/id/eprint/9916 |
Available files
Filename: 27564_ftp.pdf
Licence: Creative Commons: Attribution 3.0