Compact mechanically reconfigurable DMS-BPF filtenna with MIMO configuration for wide-to-narrowband conversion in Sub-6 GHz and X-band applications
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....
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | en |
| Published: |
Electromagnetics Academy
2025
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| Online Access: | http://eprints.utem.edu.my/id/eprint/29165/2/02702100920251241242089.pdf http://eprints.utem.edu.my/id/eprint/29165/ https://www.jpier.org/issues/reader.html?pid=25062901 |
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| Summary: | 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. |
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