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Chamfered edge filtering ultra-wideband antenna integrated with H-unit cell-loaded feed line for improved out-of-band rejection

Published online by Cambridge University Press:  06 June 2023

Bhakkiyalakshmi Ramakrishnan Open the ORCID record for Bhakkiyalakshmi Ramakrishnan [Opens in a new window]  and
Vasanthi Murugiah Sivashanmugham Open the ORCID record for Vasanthi Murugiah Sivashanmugham [Opens in a new window]
Bhakkiyalakshmi Ramakrishnan*
Affiliation:
Department of Electronics and Communication Engineering, SRM Institute of Science and Technology, Chengalpattu District, India
Vasanthi Murugiah Sivashanmugham
Affiliation:
Department of Electronics and Communication Engineering, SRM Institute of Science and Technology, Chengalpattu District, India
*
Corresponding author: Bhakkiyalakshmi Ramakrishnan; Email: bhakkiyr@srmist.edu.in
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Abstract

This paper proposes a passive filtering antenna for ultra-wideband (UWB) applications. The edge chamfering technique is adopted to construct the UWB antenna. The designed UWB antenna has a fractional bandwidth of 135%. A low-pass filter (LPF) is embedded on the feed line of the UWB antenna to convert it into a narrowband antenna that works at 2.45 GHz with 29.5% fractional bandwidth by removing the high-frequency components. The LPF is a transmission line with a stepped impedance configuration loaded with an H-shaped unit cell. The proposed filtering antenna is fabricated and tested. The measured results indicate the gain is >4.2 dBi and the radiation efficiency is >75%.

Keywords

low-pass filternarrowbandpassive filteringstepped impedanceultra-wideband
Type
Research Paper
Information
International Journal of Microwave and Wireless Technologies , First View , pp. 1 - 9
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Copyright
© The Author(s), 2023. Published by Cambridge University Press in association with the European Microwave Association

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