Dual band-notched tapered slot antenna using λ/4 band-stop filters

Zhu, F.; Gao, Steven; Li, J.; Ho, A.T.S.; See, Chan H.; Abd-Alhameed, R.A.; Xu, J.

Abstract

This study proposed a novel quarter-wavelength band-rejected element for band-notched antennas. It consists of a metal via and a rectangular strip connected to the radiating patch. In order to validate the design, a dual band-notched elliptically tapered slot antenna for ultra-wideband (UWB) applications is designed using the loaded strips. This antenna is capable of filtering the coexistent WLAN802.11a frequency bands 5.15-5.35 and 5.725-5.825 GHz. Compared with other band-notched UWB antennas, this antenna features the merit of easy tuning of each rejected frequency band because of the low mutual coupling between loaded strips at rejected frequencies. Both simulated and measured results confirm that the proposed antenna is able to achieve a wide bandwidth from 3 to over 11 GHz with two unwanted frequency bands notched. Stable radiation patterns are observed across the operational frequency range, with cross-polarisation levels below 220 dB.

• Journal Article Type: Article
• Publication Date: Dec 11, 2012
• Deposit Date: May 22, 2019
• Journal: IET Microwaves, Antennas & Propagation
• Print ISSN: 1751-8725
• Electronic ISSN: 1751-8733
• Publisher: Institution of Engineering and Technology (IET)
• Peer Reviewed: Peer Reviewed
• Volume: 6
• Issue: 15
• Pages: 1665-1673
• DOI: https://doi.org/10.1049/iet-map.2012.0502
• Keywords: ultra wideband antennas; slot antennas; antenna radiation patterns; band-stop filters; microwave filters; multifrequency antennas
• Public URL: http://researchrepository.napier.ac.uk/Output/1820442