Calisir, Ilkan, Yang, Xiantao, Bennett, Elliot L 
ORCID: 0000-0003-3798-4296, Xiao, Jianliang ORCID: 0000-0003-2010-247X and Huang, Yi
(2023)
Enhancing the bandwidth of antennas using polymer composites with high dielectric relaxation.
Materials Today Electronics, 3.
p. 100026.
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Abstract
We propose a concept using a frequency-dependent property (dielectric relaxation) of dielectric materials to enhance the bandwidth of the antenna widely used in wireless communications. The bandwidth enhancement can be achieved when a loading dielectric material with a relative permittivity that is inversely proportional to the frequency by the power of n. The bandwidth for a selected antenna example could be increased by 135% when the power n = 2. A solid material, composed of plasticized PVDF containing nano-sized silica particles, exhibiting dielectric relaxation of n = 0.52, is developed in order to prove the theoretical concept and used to test the performance of an example mobile phone antenna. The influence of hydrogen bonding on tuning the frequency-dependent power n in the developed composite material is verified. The bandwidth of the antenna was increased by 18% over the operating frequency band using a newly developed dielectrically relaxing material, n = 0.52 compared to the conventional non-relaxing material, n = 0.
| Item Type: | Article |
|---|---|
| Divisions: | Faculty of Science and Engineering > School of Electrical Engineering, Electronics and Computer Science Faculty of Science and Engineering > School of Physical Sciences |
| Depositing User: | Symplectic Admin |
| Date Deposited: | 27 Feb 2023 08:41 |
| Last Modified: | 08 Jul 2023 00:27 |
| DOI: | 10.1016/j.mtelec.2023.100026 |
| Related URLs: | |
| URI: | https://livrepository.liverpool.ac.uk/id/eprint/3168594 |
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