Compact mechanically reconfigurable DMS-BPF filtenna with MIMO configuration for wide-to-narrowband conversion in Sub-6 GHz and X-band applications

Al Gburi, Ahmed Jamal Abdullah and Megahed, Amany A. and Elabd, Rania Hamdy and E. Mousa, Marwa (2025) Compact mechanically reconfigurable DMS-BPF filtenna with MIMO configuration for wide-to-narrowband conversion in Sub-6 GHz and X-band applications. Progress in Electromagnetics Research B, 115. pp. 1-14. ISSN 1937-6472

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Abstract

This paper introduces a novel, compact, frequency reconfigurable multiple-input multiple-output (MIMO) filtenna that integrates a defected microstrip structure (DMS)-based bandpass filter (BPF) with a wideband circular patch antenna to support dynamic tuning across sub-6 GHz and X-band applications. The antenna operates efficiently as a wideband system while enabling mechanically controlled narrowband filtering through a reconfigurable BPF structure embedded in the feedline. Tunability is achieved using discrete switching mechanisms, allowing frequency selection from 5.9 GHz up to 12 GHz, with a peak gain of 6 dBi and high radiation efficiency. A two-port MIMO configuration with orthogonal element placement and an embedded decoupling structure ensures superior isolation (< −48 dB), extremely low envelope correlation coefficient (ECC < 0.0035), and diversity gain (DG) approaching 9.998 dB. The proposed antenna demonstrates excellent performance metrics with a compact footprint of 80 × 45 mm2, making it well suited for compact wireless applications in environments with limited spectral availability.

Item Type: Article
Uncontrolled Keywords: Bandpass filters, Broadband networks, Communication channels (information theory), Feedback control, Microwave antennas, Microwave filters, MIMO systems
Divisions: Faculty Of Electronics And Computer Technology And Engineering
Depositing User: Norfaradilla Idayu Ab. Ghafar
Date Deposited: 11 Dec 2025 02:22
Last Modified: 11 Dec 2025 02:22
URI: http://eprints.utem.edu.my/id/eprint/29165
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