An efficient and practical method in designing a dual-band bandpass filter operating at 2.4 and 5.2 GHz for WLAN application is presented. The proposed filter is designed by utilizing stepped impedance resonator (SIR) in hairpin-line configuration to make the structure compact and defected ground slots is introduced to attain a high coupling coefficient to enhance the performance of frequency response. The proposed design of the dual-band bandpass filter is simulated in CST Studio Suite software and fabricated using RO4003C substrate with relative permittivity of 3.55, thickness of 1.524 mm and loss tangent of 0.002. The simulation result shows low insertion loss with 1.42 dB and 1.11 dB, high return loss with 35.74 dB and 32.67 dB, fractional bandwidth (FBW) of 263 MHz (10.9%) and 349.4 MHz (6.5%) respectively at 2.4 and 5.2 GHz. The simulated and experimental results are well correlated. The proposed filter has been compared with other designs in this paper and demonstrated higher return loss compared to others.


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    Title :

    Design of a Hairpin SIR Dual-Band Bandpass Filter with Defected Ground Slots for WLAN Application


    Additional title:

    Lect. Notes Electrical Eng.



    Conference:

    International Conference on Robotics, Vision, Signal Processing and Power Applications ; 2021 April 05, 2021 - April 06, 2021



    Publication date :

    2024-03-31


    Size :

    7 pages





    Type of media :

    Article/Chapter (Book)


    Type of material :

    Electronic Resource


    Language :

    English