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Iqbal, Amjad,Ullah, Sadiq,Naeem, Umair,Basir, Abdul,Ali, Usman The Korean Institute of Electrical Engineers 2017 Journal of Electrical Engineering & Technology Vol.8 No.1
This paper presents a compact reconfigurable printed monopole antenna, operating in three different frequency bands (2.45 GHz, 3 GHz and 5.2 GHz), depending upon the state of the lumped element switch. The proposed multiband reconfigurable antenna is designed and fabricated on a 1.6 mm thicker FR-4 substrate having a relative permittivity of 4.4. When the switch is turned ON, the antenna operates in a dual band frequency mode, i.e. WiFi at 2.45 GHz (2.06-3.14 GHz) and WLAN at 5.4 GHz (5.11-5.66 GHz). When the switch is turned OFF, it operates only at 3 GHz (2.44-3.66 GHz). The antenna radiates omni-directionally in these bands with an adequate, bandwidth (>10 %), efficiency (>90 %), gain (>1.2 dB), directivity (>1.7 dBi) and VSWR (<2). The fabricated antenna is tested in the laboratory to validate the simulated results. The antenna, due to its reasonably compact size ($39{\times}37mm^2$), can be used in portable devices such as laptops and iPads.
Amjad Iqbal,Sadiq Ullah,Umair Naeem,Abdul Basir,Usman Ali 대한전기학회 2017 Journal of Electrical Engineering & Technology Vol.12 No.4
This paper presents a compact reconfigurable printed monopole antenna, operating in three different frequency bands (2.45 ㎓, 3 ㎓ and 5.2 ㎓), depending upon the state of the lumped element switch. The proposed multiband reconfigurable antenna is designed and fabricated on a 1.6 ㎜ thicker FR-4 substrate having a relative permittivity of 4.4. When the switch is turned ON, the antenna operates in a dual band frequency mode, i.e. WiFi at 2.45 ㎓ (2.06-3.14 ㎓) and WLAN at 5.4 ㎓ (5.11-5.66 ㎓). When the switch is turned OFF, it operates only at 3 ㎓ (2.44-3.66 ㎓). The antenna radiates omni-directionally in these bands with an adequate, bandwidth (>10 %), efficiency (>90 %), gain (>1.2 dB), directivity (>1.7 ㏈i) and VSWR (<2). The fabricated antenna is tested in the laboratory to validate the simulated results. The antenna, due to its reasonably compact size (39 x 37 ㎟), can be used in portable devices such as laptops and iPads.