2026-10-13T10:08:18Z https://api.figshare.com/v2/oai

oai:figshare.com:article/34049090 2026-10-01T17:41:52Z category_1 category_4 category_146 category_915 category_14 category_21 category_873 category_39 category_734 category_64 portal_5 item_type_1 month_year_10_2026

<p>Fabricated prototype: top and bottom views.</p> Anh Nguyen-Quang (25157879) Hung Tran-Huy (16865815) Hung Nguyen-Manh (17598887) Muhammad Ikram (5574620) Biophysics Biochemistry Space Science Physical Sciences not elsewhere classified Molecular Biology Biotechnology Chemical Sciences not elsewhere classified Ecology Biological Sciences not elsewhere classified Cancer structurally simple solution proposed configuration provides narrow capacitive gaps lowest frequency ratio db impedance bandwidths band directional antenna approximately 61 %). three operating bands ghz driven patch prototype occupying 0 making compact integration div >< p 0 ghz yield target bands ghz resonances 36 0 two proximity space wavelength shorting vias resonant length reactively loaded meandered sections feed tri exhibits measured 6e systems 13 mm 100 mhz <div><p>A compact single-layer, single-feed tri-band directional antenna is presented for Wi-Fi 6/6E systems. The target bands at 2.4, 5.2, and 6.0 GHz yield a highest-to-lowest frequency ratio of 2.50, making compact integration of the low-band radiator particularly challenging. To address this issue, the 2.4-GHz driven patch is reactively loaded with narrow capacitive gaps, shorting vias, and meandered sections, reducing its resonant length from 33 to 13 mm (approximately 61%). Two proximity-coupled parasitic patches generate the 5.2- and 6.0-GHz resonances. The spatially distinct current paths provide nearly independent control of the three operating bands. A prototype occupying 0.36 0.36 0.012, where is the free-space wavelength at 2.4 GHz, exhibits measured -dB impedance bandwidths of 20, 90, and 100 MHz and peak broadside realized gains of 3.1, 5.8, and 6.8 dBi, respectively. The proposed configuration provides a compact and structurally simple solution for channel-specific Wi-Fi 6/6E links.</p></div> 2026-10-01T17:41:36Z Image Figure 10.1371/journal.pone.0359290.g014 https://figshare.com/articles/figure/_p_Fabricated_prototype_top_and_bottom_views_p_/34049090 CC BY 4.0