Vol. 81

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2019-01-07

A Compact Dual-Band Metamaterial Inspired Antenna with Virtual Ground Plane for WiMAX and Satellite Applications

By Ashish Gupta, Abhipsha Patro, Akanksha Negi, and Arpit Kapoor
Progress In Electromagnetics Research Letters, Vol. 81, 29-37, 2019
doi:10.2528/PIERL18110603

Abstract

A compact dual-band metamaterial-inspired antenna is designed and developed in this paper. This design is carried out by loading a radial stub (acts as virtual ground plane) onto a circular microstrip fed patch antenna. Proposed antenna resonates at two frequencies fc1 = 2.70 GHz and fc2 = 7.34 GHz with -10 dB simulated impedance bandwidth of 6.6% (2.62-2.80 GHz) and 14.57% (6.57-7.65 GHz) respectively. First band is due to the metamaterial transmission line while second band is due to the coupling between microstrip feed and ground plane. Electrical size of the proposed antenna is 0.27λ0 × 0.27λ0 × 0.014λ00, where λ0 is the free space wavelength at f0 = 2.70 GHz. In addition, this antenna provides antenna gain of 1.49 dB at 2.70 GHz and 3.75 dB at 7.34 GHz in the boresight direction. This antenna also provides dipolar type pattern in the xz plane whereas omnidirectional pattern in the yz plane with cross polarization level of -32 dB in the lower band while cross polarization level of -23 dB is maintained even in higher band. Proposed antenna's compactness, excellent radiation characteristics and ease of fabrication make it feasible to be utilized for Worldwide interoperability for microwave access (WiMAX) and satellite TV applications.

Citation


Ashish Gupta, Abhipsha Patro, Akanksha Negi, and Arpit Kapoor, "A Compact Dual-Band Metamaterial Inspired Antenna with Virtual Ground Plane for WiMAX and Satellite Applications," Progress In Electromagnetics Research Letters, Vol. 81, 29-37, 2019.
doi:10.2528/PIERL18110603
http://www.jpier.org/PIERL/pier.php?paper=18110603

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