In this paper, a four-element microstrip antenna array is presented. The array is composed of Wilkinson power dividers which act as feed network along with Dolph-Chebyshev distribution and four-identical patch antenna elements. The array elements are properly designed to have a compact size and constant gain against frequency. The simulated results show good agreement with the measured results for the fabricated antenna array. Measurement shows that the array has a peak gain of more than 12 dBi with side-lobe level of -15 dB at 6 GHz. These characteristics make the antenna array suitable for UWB directional uses.
Chandan Kumar Chakrabarty,
"Ultra-Wideband Antenna Array Design for Target Detection," Progress In Electromagnetics Research C,
Vol. 25, 67-79, 2012. doi:10.2528/PIERC11090607
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