Design of a Modified Wideband Microstrip Patch Antenna for WLAN/WiMAX Applications

• Iliya D. IBRAHIM

  Author

• Suleiman A. BABALE

  Author

• Sani H. LAWAN

  Author

• Auwal A. ABUBAKAR

  Author

This work presents the design of modified wideband Microstrip Patch Antenna with defected hexagonal slot on partial ground plane. The radiating was clipped to form a notch using three different steps to achieve wide impedance bandwidth. At each step of development numerical simulations are presented using CST Microwave Studio (CST MWS) and various performance parameter of the antenna were noted. The proposed design attains a wide impedance bandwidth of 2.97– 7.53 GHz with return loss of less than -10dB. The VSWR is between 1 and 2 across the resonance frequency with the minimum value of 1.14 at 3.648 GHz indicating minimal reflection and efficient power transfer. At 3.5 GHz, the antenna exhibits a main-lobe directivity of 2.95 dBi and a gain of 2.28 dB. These values indicate near-omnidirectional coverage with sufficient gain, making the antenna appropriate for WiMAX systems. At 5.5 GHz, the design introdudes a directivity of 3.4 dBi and a gain of 2.81 dB. The improved directivity and gain at this higher frequency suggest better radiation and focusing a higher efficiency, which are desirable for WLAN applications such as indoor wireless networking, also this design enhanced the antenna throughput and minimized the interference.

• FJET_21_89_89

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