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Strong coupling induced notched bands of UWB antennas using meta-surfaces
Published online by Cambridge University Press: 21 October 2022
Abstract
The meta-surface is introduced into the design of band-notched monopole antennas with single/dual/triple notched bands around 3.6/5.5/7.2 GHz for ultra-wideband (UWB) communication. We show that strong coupling effects between the meta-surface and the antenna would be created through tuning the orientations of the meta-cells according to the field distributions on the antenna surface, and eventually, filter the unwanted radiations of the antenna. Especially, by simply attaching different meta-surfaces on the back of the antenna, the band-notched properties are shown to be changeable without hurting the original structure of the antenna. Both simulation and measurement results demonstrate the monopole with replaceable meta-surfaces has achieved an UWB operating band ranging from 3 to 9 GHz for voltage standing wave ratio (VSWR) ≤ 2 with single/dual/triple notched bands covering frequencies around 3.6/5.5/7.2 GHz. Such a design would obtain significant notched performances for the desired bands and maintain the good radiations in the operating frequency, which make it a suitable candidate for UWB applications.
- Type
- Antenna Design, Modeling and Measurements
- Information
- International Journal of Microwave and Wireless Technologies , Volume 15 , Issue 5 , June 2023 , pp. 843 - 851
- Copyright
- © The Author(s), 2022. Published by Cambridge University Press in association with the European Microwave Association