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@article{206601,
        author = {N Kannan and D Nithyanandhan and R Sivaraman and M Subash},
        title = {WIDEBAND MICROSTRIP BANDPASS FILTER USING FR4 SUBSTRATE FOR WLAN APPLICATIONS},
        journal = {International Journal of Innovative Research in Technology},
        year = {2026},
        volume = {13},
        number = {2},
        pages = {2210-2215},
        issn = {2349-6002},
        url = {https://ijirt.org/article?manuscript=206601},
        abstract = {An interdigital resonator-based bandpass structure is implemented on an FR4 substrate and analyzed using ANSYS HFSS to enhance signal selectivity in wireless communication systems. The filter is designed and simulated to allow the desired frequency band to pass while attenuating unwanted out-of-band signals. The rapid expansion of Wi-Fi, Bluetooth, and IoT devices within this spectrum has increased congestion, making efficient band selection essential for stable performance. The simulated S-parameter results demonstrate low insertion loss within the passband along with satisfactory impedance matching. The interdigital configuration strengthens capacitive coupling between adjacent fingers, enabling controlled resonance and stable frequency response. Owing to its compact planar structure and flexible design characteristics, the filter is suitable for integration into WLAN and IoT RF front-end applications. The proposed design focuses on achieving stable passband transmission with reliable selectivity while maintaining a simple geometry suitable for practical implementation.},
        keywords = {Interdigital Filter, Microstrip Bandpass Filter, 2.4 GHz ISM Band, WLAN Interference Suppression, RF Filter Design, ANSYS HFSS, S-Parameters, FR4 Substrate, Resonator Coupling, Wireless Communication Systems},
        month = {July},
        }