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Investigation of wide-band microstrip slot antenna

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3 Author(s)
S. K. Sharma ; Dept. of Electr. & Comput. Eng., Univ. of Manitoba, Winnipeg, Man., Canada ; L. Shafai ; N. Jacob

This paper presents the simulation and experimental investigations of a printed microstrip slot antenna. It is a quarter wavelength monopole slot cut in the finite ground plane edge, and fed electromagnetically by a microstrip transmission line. It provides a wide impedance bandwidth adjustable by variation of its parameters, such as the relative permittivity and thickness of the substrate, width, and location of the slot in the ground plane, and feed and ground plane dimensions. The ground plane is small, 50 mm×80 mm, and is about the size of a typical PC wireless card. At the center frequency of 3.00 GHz, its width of 50 mm is about λ/2 and influences the slot impedance and bandwidth significantly. An impedance bandwidth (S11=-10 dB) of up to about 60% is achieved by individually optimizing its parameters. The simulation results are confirmed experimentally. A dual complementary slot antenna configuration is also investigated for the polarization diversity.

Published in:

IEEE Transactions on Antennas and Propagation  (Volume:52 ,  Issue: 3 )