B. Pathak, G. Kalita, Manas Pratim Barooah, S. Chiranjeevi, Bidisha Dasgupta
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A Novel Printed Monopole Antenna for Broadband Applications
In this paper, one novel leaf shaped printed antenna is reported which is excited with a Coplanar Waveguide (CPW) feed. The proposed antenna geometry is designed by incorporating two basic patch geometries ‘semi-circle’ and ‘triangle’ which minimize the physical area of the radiator in comparison to the other regular geometries. The antenna operates over the C-band with 70% impedance bandwidth $(\mathbf{S}_{11} < -10\ \mathbf{dB})$ and about 4 dBi peak gain. Further, the sleeve like structure has been incorporated in the same antenna and the impedance bandwidth has been extended about 20%. Now this leaf shaped patch antenna with sleevelike structure operates over C and X bands with about 4.5 dBi peak gain. The antenna also provides monopole-like radiation pattern and low cross polarized components in two principal planes. So, the proposed antenna can be used as a suitable electromagnetic radiator for C and X bands applications.
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