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Development of compact bandpass filter using symmetrical metamaterial structures for GPS, ISM, Wi-MAX, and WLAN applications

Vineetha, K. V., Phani Madhav, B. T., Kumar, B. S., Das, S., Islam, T. and Alathbah, Moath Abdulrahman A 2023. Development of compact bandpass filter using symmetrical metamaterial structures for GPS, ISM, Wi-MAX, and WLAN applications. Symmetry 15 (11) , 2058. 10.3390/sym15112058

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This article describes the development of a compact microstrip bandpass filter (BPF) for multiple wireless communication utilizations. The proposed bandpass filter consists of metamaterial unit cells that are symmetrical in shape. The design process involves the placement of four symmetrical split-ring resonators (SRRs) on the top plane of the BPF. It exhibits improved filter characteristics through the implementation of these SRRs. The filter was modeled and fabricated and its performance was evaluated using a Vector Network Analyzer. The designed bandpass filter shows a 5 GHz bandwidth covering the frequency band spanning from 1 to 5.2 GHz, with a quality factor value of 1.85 across 1.9 GHz, 3.3 across 3.3 GHz and 5.1 across 5.1 GHz. The metamaterial analysis was carried out using ANSYS ELECTRONIC DESKTOP. The proposed filter measures 20 × 18 × 1.6 mm3, which is significantly smaller than current filters. The designed bandpass filter occupies 50% of the space of a conventional filter. The designed bandpass filter exhibits a distributed surface current of 84 A/m, and 94 A/m across the wide- and narrow-band operating frequency. The simulated and measured results indicate that the suggested metamaterial filter is well-suited for multiband wireless applications like GPS (1.57 GHz), WLAN (2.4, 3.6, and 5.2 GHz), Wi-MAX (2.3, 2.5, and 3.5 GHz), and ISM (2.5 GHz).

Item Type: Article
Date Type: Publication
Status: Published
Schools: Engineering
Publisher: MDPI
ISSN: 2073-8994
Date of First Compliant Deposit: 21 December 2023
Date of Acceptance: 27 October 2023
Last Modified: 10 Feb 2024 02:08

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