EPJ Appl. Metamat.
Volume 5, 2018
Metamaterials Research and Development in Japan
|Number of page(s)||8|
|Published online||19 December 2018|
Design of composite right/left-handed transmission line for phase shifter of multi-band base station antenna
Department of Electrical and Electronic Engineering, National Defense Academy, Yokosuka 239-8686, Japan
2 Department of Electronic Systems Engineering, Malaysia-Japan International Institute of Technology, Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, 54100 Kuala Lumpur, Malaysia
3 Department of Information and Communication Systems Engineering, Chiba Institute of Technology, Narashino 275-0016, Japan
* e-mail: email@example.com
Accepted: 17 November 2018
Published online: 19 December 2018
In multi-band base station antennas, interference toward neighboring cells at low operating frequency in-creases since tilting angle is frequency-independent and beamwidth in the vertical plane increases as de-creasing the operating frequency. In this paper, the realization of the different phase shifts at each frequency is proposed by using the dispersion relation of the composite right/left-handed transmission line. The feasi-bility of the phase shift is clarified by using equivalent circuit model of the unit cell. Next, the dispersion and Bloch impedance of the actual configuration of the unit cell are designed. The inverse phase shift at each frequency is verified experimentally.
© N. Michishita et al., published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.