Prof. Milind S. Narlawar, Dr. S. L. Badjate
This paper presents a novel single port swastika shaped dotted monopole antenna evolved from a simple circular monopole antenna by introducing swastika shaped slots and the dots in the patch geometry. This antenna behaves as an ultra wideband sensing antenna which works in the frequency range of 3.6GHz to 8.9GHz .This antenna is further modified by connecting stubs with the switches. By appropriate combination of switches the antenna works as a reconfigurable antenna. The proposed antenna suitable for cognitive radio applications was designed and analysed by using software HFSS 13.0 which is based on finite element modelling (FEM). Antenna performance parameters such as antenna gain, return loss, VSWR over the operating bands have been observed and found to be well within the expected range.
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