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Modeling and simulation of dual layered U-slot multiband microstrip patch antenna for wireless applications

  • Satheesh Kumar Department of ECE,Coimbatore Institute of Technology,Coimbatore, Tamilnadu, India.
  • Balakumaran T Department of ECE,Coimbatore Institute of Technology,Coimbatore, Tamilnadu, India


The Multi-band characteristics for wireless communications are achieved by U-slot patch in the microstrip patch antennas. Unlike previous work on the conventional U-slot micro strip patch antennas, the effect of the inverted dual U-slot inclusion on the performance of the patch antenna is studied across the entire achieved multiband characteristics. A low cost and compact triple band aperture coupled microstrip patch antenna for Wireless Local Area Network (WLAN) is presented. The proposed antenna has inverted U-slots and dual substrate with thickness of 3.2mm to achieve the triple band characteristics. The combination of inverted U-slots, dual substrate and modified ground plane results in the required operational frequency bands—namely, Wireless LAN. Design details of the proposed triple band antenna and parametric study is also presented. The dual- band antenna resonates at 3.6GHz and 5.2 GHz whereas triple- band antenna resonates at 3.6 GHz, 5.2 GHz and 5.8 GHz. For U-slot dual- band antenna,the directivity of 6.345 dBi and 5.725dBi is obtained at lower resonant frequency 3.6 GHz and upper resonant frequency 5.2 GHz respectively. U- slot triple-band antenna shows 6.103 dBi, 6.371 dBi and 5 dBi directivity at lower resonant frequency of 3.6 GHz,middle resonant frequency of 5.2 GHz and upper resonant frequency of 5.8 GHz respectively.


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