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Progress In Electromagnetics Research B
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DESIGN OF ASYMMETRIC SLOT ANTENNA WITH MEANDERED NARROW RECTANGULAR SLIT FOR DUAL BAND APPLICATIONS

By R. Kumar, P. V. Naidu, and V. Kamble

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Abstract:
A compact coplanar waveguide (CPW) fed asymmetric slot antenna with dual operating bands is proposed. The slot is modified rectangular in shape and asymmetrically cut in the ground plane. A hexagonal patch fed by a two-step CPW is used to excite the slot. The feed itself is slightly asymmetric (shifted, with unequal ground planes). The asymmetric cuts on the slot together with the feed line asymmetry have helped in obtaining ultra wideband impedance matching. An extra resonance at 2.4 GHz for Bluetooth applications is obtained by cutting an additional meandered narrow rectangular shape slit in the ground plane. The prototype of the proposed antenna has been fabricated and tested. The measured 10 dB return loss bandwidth of the proposed antenna is 200 MHz (2.3-2.5 GHz) for the first band and 12.1 GHz (2.9-15.0 GHz) for the second band. The radiation patterns of the proposed antenna are obtained and found to be Omni-directional in H-plane and bi-directional in E-Plane. The measured and simulated results are in good agreement.

Citation:
R. Kumar, P. V. Naidu, and V. Kamble, "Design of Asymmetric Slot Antenna with Meandered Narrow Rectangular Slit for Dual Band Applications," Progress In Electromagnetics Research B, Vol. 60, 111-123, 2014.
doi:10.2528/PIERB14042205

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